fix: Regex crashes with too long input strings

cmake/build_helpers.cmake

@@ -702,6 +702,12 @@ macro(addBundledLibraries)
         set(JTHREAD_LIBRARIES jthread)
     endif()
 
+    if (USE_SYSTEM_BOOST)
+        find_package(boost REQUIRED)
+    else()
+        add_subdirectory(${THIRD_PARTY_LIBS_FOLDER}/boost ${CMAKE_CURRENT_BINARY_DIR}/boost EXCLUDE_FROM_ALL)
+    endif()
+
     set(LIBPL_BUILD_CLI_AS_EXECUTABLE OFF CACHE BOOL "" FORCE)
     set(LIBPL_ENABLE_PRECOMPILED_HEADERS ${IMHEX_ENABLE_PRECOMPILED_HEADERS} CACHE BOOL "" FORCE)
 

lib/libimhex/CMakeLists.txt

@@ -142,7 +142,7 @@ if (NOT IMHEX_EXTERNAL_PLUGIN_BUILD)
     precompileHeaders(libimhex "${CMAKE_CURRENT_SOURCE_DIR}/include")
 endif()
 
-target_link_libraries(libimhex ${LIBIMHEX_LIBRARY_TYPE} ${NLOHMANN_JSON_LIBRARIES} imgui_all_includes ${MBEDTLS_LIBRARIES} ${FMT_LIBRARIES} ${LUNASVG_LIBRARIES})
+target_link_libraries(libimhex ${LIBIMHEX_LIBRARY_TYPE} ${NLOHMANN_JSON_LIBRARIES} imgui_all_includes ${MBEDTLS_LIBRARIES} ${FMT_LIBRARIES} ${LUNASVG_LIBRARIES} boost::regex)
 
 set_property(TARGET libimhex PROPERTY INTERPROCEDURAL_OPTIMIZATION FALSE)
 

lib/third_party/boost/CMakeLists.txt

@@ -0,0 +1,3 @@
+project(boost)
+
+add_subdirectory(regex)

lib/third_party/boost/regex/CMakeLists.txt

@@ -0,0 +1,10 @@
+project(boost-regex)
+
+add_library(boost-regex INTERFACE)
+
+target_include_directories(boost-regex INTERFACE
+    include
+)
+target_compile_definitions(boost-regex INTERFACE BOOST_REGEX_STANDALONE)
+
+add_library(boost::regex ALIAS boost-regex)

lib/third_party/boost/regex/include/boost/cregex.hpp

@@ -0,0 +1,43 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org/libs/regex for most recent version.
+  *   FILE         cregex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares POSIX API functions
+  *                + boost::RegEx high level wrapper.
+  */
+
+#ifndef BOOST_RE_CREGEX_HPP
+#define BOOST_RE_CREGEX_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#ifdef BOOST_REGEX_CXX03
+#include <boost/regex/v4/cregex.hpp>
+#else
+#include <boost/regex/v5/cregex.hpp>
+#endif
+
+#endif /* include guard */
+
+
+
+
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex.h

@@ -0,0 +1,100 @@
+/*
+ *
+ * Copyright (c) 1998-2000
+ * Dr John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org/libs/regex for documentation.
+  *   FILE         regex.h
+  *   VERSION      3.12
+  *   DESCRIPTION: Declares POSIX API functions
+  */
+
+#ifndef BOOST_RE_REGEX_H
+#define BOOST_RE_REGEX_H
+
+#include <boost/cregex.hpp>
+
+/*
+*  add using declarations to bring POSIX API functions into
+* global scope, only if this is C++ (and not C).
+*/
+#ifdef __cplusplus
+
+using boost::regoff_t;
+using boost::regex_tA;
+using boost::regmatch_t;
+using boost::REG_BASIC;
+using boost::REG_EXTENDED;
+using boost::REG_ICASE;
+using boost::REG_NOSUB;
+using boost::REG_NEWLINE;
+using boost::REG_NOSPEC;
+using boost::REG_PEND;
+using boost::REG_DUMP;
+using boost::REG_NOCOLLATE;
+using boost::REG_ESCAPE_IN_LISTS;
+using boost::REG_NEWLINE_ALT;
+using boost::REG_PERL;
+using boost::REG_AWK;
+using boost::REG_GREP;
+using boost::REG_EGREP;
+using boost::REG_ASSERT;
+using boost::REG_INVARG;
+using boost::REG_ATOI;
+using boost::REG_ITOA;
+
+using boost::REG_NOTBOL;
+using boost::REG_NOTEOL;
+using boost::REG_STARTEND;
+
+using boost::reg_comp_flags;
+using boost::reg_exec_flags;
+using boost::regcompA;
+using boost::regerrorA;
+using boost::regexecA;
+using boost::regfreeA;
+
+#ifndef BOOST_NO_WREGEX
+using boost::regcompW;
+using boost::regerrorW;
+using boost::regexecW;
+using boost::regfreeW;
+using boost::regex_tW;
+#endif
+
+using boost::REG_NOERROR;
+using boost::REG_NOMATCH;
+using boost::REG_BADPAT;
+using boost::REG_ECOLLATE;
+using boost::REG_ECTYPE;
+using boost::REG_EESCAPE;
+using boost::REG_ESUBREG;
+using boost::REG_EBRACK;
+using boost::REG_EPAREN;
+using boost::REG_EBRACE;
+using boost::REG_BADBR;
+using boost::REG_ERANGE;
+using boost::REG_ESPACE;
+using boost::REG_BADRPT;
+using boost::REG_EEND;
+using boost::REG_ESIZE;
+using boost::REG_ERPAREN;
+using boost::REG_EMPTY;
+using boost::REG_E_MEMORY;
+using boost::REG_E_UNKNOWN;
+using boost::reg_errcode_t;
+
+#endif /* __cplusplus */
+
+#endif /* BOOST_RE_REGEX_H */
+
+
+
+

lib/third_party/boost/regex/include/boost/regex.hpp

@@ -0,0 +1,41 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org/libs/regex for documentation.
+  *   FILE         regex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares boost::basic_regex<> and associated
+  *                functions and classes. This header is the main
+  *                entry point for the template regex code.
+  */
+
+
+/* start with C compatibility API */
+
+#ifndef BOOST_RE_REGEX_HPP
+#define BOOST_RE_REGEX_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#ifdef BOOST_REGEX_CXX03
+#include <boost/regex/v4/regex.hpp>
+#else
+#include <boost/regex/v5/regex.hpp>
+#endif
+
+#endif  // include
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/config.hpp

@@ -0,0 +1,480 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         config.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: regex extended config setup.
+  */
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#define BOOST_REGEX_CONFIG_HPP
+
+#if !((__cplusplus >= 201103L) || (defined(_MSC_VER) && (_MSC_VER >= 1600)) || defined(BOOST_REGEX_CXX03))
+#  define BOOST_REGEX_CXX03
+#endif
+
+#if defined(BOOST_REGEX_RECURSIVE) && !defined(BOOST_REGEX_CXX03)
+#  define BOOST_REGEX_CXX03
+#endif
+
+#if defined(__has_include)
+#if !defined(BOOST_REGEX_STANDALONE) && !__has_include(<boost/version.hpp>)
+#define BOOST_REGEX_STANDALONE
+#endif
+#endif
+
+/*
+ * Borland C++ Fix/error check
+ * this has to go *before* we include any std lib headers:
+ */
+#if defined(__BORLANDC__) && !defined(__clang__)
+#  include <boost/regex/config/borland.hpp>
+#endif
+#ifndef BOOST_REGEX_STANDALONE
+#include <boost/version.hpp>
+#endif
+
+/*************************************************************************
+*
+* Asserts:
+*
+*************************************************************************/
+
+#ifdef BOOST_REGEX_STANDALONE
+#include <cassert>
+#  define BOOST_REGEX_ASSERT(x) assert(x)
+#else
+#include <boost/assert.hpp>
+#  define BOOST_REGEX_ASSERT(x) BOOST_ASSERT(x)
+#endif
+
+/*****************************************************************************
+ *
+ *  Include all the headers we need here:
+ *
+ ****************************************************************************/
+
+#ifdef __cplusplus
+
+#  ifndef BOOST_REGEX_USER_CONFIG
+#     define BOOST_REGEX_USER_CONFIG <boost/regex/user.hpp>
+#  endif
+
+#  include BOOST_REGEX_USER_CONFIG
+
+#ifndef BOOST_REGEX_STANDALONE
+#  include <boost/config.hpp>
+#  include <boost/predef.h>
+#endif
+
+#else
+   /*
+    * C build,
+    * don't include <boost/config.hpp> because that may
+    * do C++ specific things in future...
+    */
+#  include <stdlib.h>
+#  include <stddef.h>
+#  ifdef _MSC_VER
+#     define BOOST_MSVC _MSC_VER
+#  endif
+#endif
+
+
+/****************************************************************************
+*
+* Legacy support:
+*
+*******************************************************************************/
+
+#if defined(BOOST_NO_STD_LOCALE) || defined(BOOST_NO_CXX11_HDR_MUTEX) || defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) \
+   || defined(BOOST_NO_CXX11_HDR_ATOMIC) || defined(BOOST_NO_CXX11_ALLOCATOR) || defined(BOOST_NO_CXX11_SMART_PTR) \
+   || defined(BOOST_NO_CXX11_STATIC_ASSERT) || defined(BOOST_NO_NOEXCEPT)
+#ifndef BOOST_REGEX_CXX03
+#  define BOOST_REGEX_CXX03
+#endif
+#endif
+
+/*****************************************************************************
+ *
+ *  Boilerplate regex config options:
+ *
+ ****************************************************************************/
+
+/* Obsolete macro, use BOOST_VERSION instead: */
+#define BOOST_RE_VERSION 500
+
+/* fix: */
+#if defined(_UNICODE) && !defined(UNICODE)
+#define UNICODE
+#endif
+
+#define BOOST_REGEX_JOIN(X, Y) BOOST_REGEX_DO_JOIN(X, Y)
+#define BOOST_REGEX_DO_JOIN(X, Y) BOOST_REGEX_DO_JOIN2(X,Y)
+#define BOOST_REGEX_DO_JOIN2(X, Y) X##Y
+
+#ifdef BOOST_FALLTHROUGH
+#  define BOOST_REGEX_FALLTHROUGH BOOST_FALLTHROUGH
+#else
+
+#if defined(__clang__) && (__cplusplus >= 201103L) && defined(__has_warning)
+#  if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
+#    define BOOST_REGEX_FALLTHROUGH [[clang::fallthrough]]
+#  endif
+#endif
+#if !defined(BOOST_REGEX_FALLTHROUGH) && defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1800) && (__cplusplus >= 201703)
+#  define BOOST_REGEX_FALLTHROUGH [[fallthrough]]
+#endif
+#if !defined(BOOST_REGEX_FALLTHROUGH) && defined(__GNUC__) && (__GNUC__ >= 7)
+#  define BOOST_REGEX_FALLTHROUGH __attribute__((fallthrough))
+#endif
+
+#if !defined(BOOST_REGEX_FALLTHROUGH)
+#  define BOOST_REGEX_FALLTHROUGH
+#endif
+#endif
+
+#ifdef BOOST_NORETURN
+#  define BOOST_REGEX_NORETURN BOOST_NORETURN
+#else
+#  define BOOST_REGEX_NORETURN
+#endif
+
+
+/*
+* Define a macro for the namespace that details are placed in, this includes the Boost
+* version number to avoid mismatched header and library versions:
+*/
+#define BOOST_REGEX_DETAIL_NS BOOST_REGEX_JOIN(re_detail_, BOOST_RE_VERSION)
+
+/*
+ * Fix for gcc prior to 3.4: std::ctype<wchar_t> doesn't allow
+ * masks to be combined, for example:
+ * std::use_facet<std::ctype<wchar_t> >.is(std::ctype_base::lower|std::ctype_base::upper, L'a');
+ * returns *false*.
+ */
+#if defined(__GLIBCPP__) && defined(BOOST_REGEX_CXX03)
+#  define BOOST_REGEX_BUGGY_CTYPE_FACET
+#endif
+
+/*
+ * If there isn't good enough wide character support then there will
+ * be no wide character regular expressions:
+ */
+#if (defined(BOOST_NO_CWCHAR) || defined(BOOST_NO_CWCTYPE) || defined(BOOST_NO_STD_WSTRING))
+#  if !defined(BOOST_NO_WREGEX)
+#     define BOOST_NO_WREGEX
+#  endif
+#else
+#  if defined(__sgi) && (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION))
+      /* STLPort on IRIX is misconfigured: <cwctype> does not compile
+       * as a temporary fix include <wctype.h> instead and prevent inclusion
+       * of STLPort version of <cwctype> */
+#     include <wctype.h>
+#     define __STLPORT_CWCTYPE
+#     define _STLP_CWCTYPE
+#  endif
+
+#if defined(__cplusplus) && defined(BOOST_REGEX_CXX03)
+#  include <boost/regex/config/cwchar.hpp>
+#endif
+
+#endif
+
+/*
+ * If Win32 support has been disabled for boost in general, then
+ * it is for regex in particular:
+ */
+#if defined(BOOST_DISABLE_WIN32) && !defined(BOOST_REGEX_NO_W32)
+#  define BOOST_REGEX_NO_W32
+#endif
+
+/* disable our own file-iterators and mapfiles if we can't
+ * support them: */
+#if defined(_WIN32)
+#  if defined(BOOST_REGEX_NO_W32) || BOOST_PLAT_WINDOWS_RUNTIME
+#    define BOOST_REGEX_NO_FILEITER
+#  endif
+#else /* defined(_WIN32) */
+#  if !defined(BOOST_HAS_DIRENT_H)
+#    define BOOST_REGEX_NO_FILEITER
+#  endif
+#endif
+
+/* backwards compatibitity: */
+#if defined(BOOST_RE_NO_LIB)
+#  define BOOST_REGEX_NO_LIB
+#endif
+
+#if defined(__GNUC__) && !defined(_MSC_VER) && (defined(_WIN32) || defined(__CYGWIN__))
+/* gcc on win32 has problems if you include <windows.h>
+   (sporadically generates bad code). */
+#  define BOOST_REGEX_NO_W32
+#endif
+#if defined(__COMO__) && !defined(BOOST_REGEX_NO_W32) && !defined(_MSC_EXTENSIONS)
+#  define BOOST_REGEX_NO_W32
+#endif
+
+#ifdef BOOST_REGEX_STANDALONE
+#  if defined(_MSC_VER) && !defined(__clang__) && !defined(__GNUC__)
+#     define BOOST_REGEX_MSVC _MSC_VER
+#endif
+#elif defined(BOOST_MSVC)
+#  define BOOST_REGEX_MSVC BOOST_MSVC
+#endif
+
+
+/*****************************************************************************
+ *
+ *  Set up dll import/export options:
+ *
+ ****************************************************************************/
+
+#if (defined(BOOST_REGEX_DYN_LINK) || defined(BOOST_ALL_DYN_LINK)) && !defined(BOOST_REGEX_STATIC_LINK) && defined(BOOST_SYMBOL_IMPORT)
+#  if defined(BOOST_REGEX_SOURCE)
+#     define BOOST_REGEX_BUILD_DLL
+#     define BOOST_REGEX_DECL BOOST_SYMBOL_EXPORT
+#  else
+#     define BOOST_REGEX_DECL BOOST_SYMBOL_IMPORT
+#  endif
+#else
+#  define BOOST_REGEX_DECL
+#endif
+
+#ifdef BOOST_REGEX_CXX03
+#if !defined(BOOST_REGEX_NO_LIB) && !defined(BOOST_REGEX_SOURCE) && !defined(BOOST_ALL_NO_LIB) && defined(__cplusplus)
+#  define BOOST_LIB_NAME boost_regex
+#  if defined(BOOST_REGEX_DYN_LINK) || defined(BOOST_ALL_DYN_LINK)
+#     define BOOST_DYN_LINK
+#  endif
+#  ifdef BOOST_REGEX_DIAG
+#     define BOOST_LIB_DIAGNOSTIC
+#  endif
+#  include <boost/config/auto_link.hpp>
+#endif
+#endif
+
+/*****************************************************************************
+ *
+ *  Set up function call type:
+ *
+ ****************************************************************************/
+
+#if defined(_MSC_VER) && defined(_MSC_EXTENSIONS)
+#if defined(_DEBUG) || defined(__MSVC_RUNTIME_CHECKS) || defined(_MANAGED) || defined(BOOST_REGEX_NO_FASTCALL)
+#  define BOOST_REGEX_CALL __cdecl
+#else
+#  define BOOST_REGEX_CALL __fastcall
+#endif
+#  define BOOST_REGEX_CCALL __cdecl
+#endif
+
+#if defined(__BORLANDC__) && !defined(BOOST_DISABLE_WIN32)
+#if defined(__clang__)
+#  define BOOST_REGEX_CALL __cdecl
+#  define BOOST_REGEX_CCALL __cdecl
+#else
+#  define BOOST_REGEX_CALL __fastcall
+#  define BOOST_REGEX_CCALL __stdcall
+#endif
+#endif
+
+#ifndef BOOST_REGEX_CALL
+#  define BOOST_REGEX_CALL
+#endif
+#ifndef BOOST_REGEX_CCALL
+#define BOOST_REGEX_CCALL
+#endif
+
+/*****************************************************************************
+ *
+ *  Set up localisation model:
+ *
+ ****************************************************************************/
+
+/* backwards compatibility: */
+#ifdef BOOST_RE_LOCALE_C
+#  define BOOST_REGEX_USE_C_LOCALE
+#endif
+
+#ifdef BOOST_RE_LOCALE_CPP
+#  define BOOST_REGEX_USE_CPP_LOCALE
+#endif
+
+#if defined(__CYGWIN__)
+#  define BOOST_REGEX_USE_C_LOCALE
+#endif
+
+/* use C++ locale when targeting windows store */
+#if BOOST_PLAT_WINDOWS_RUNTIME
+#  define BOOST_REGEX_USE_CPP_LOCALE
+#  define BOOST_REGEX_NO_WIN32_LOCALE
+#endif
+
+/* Win32 defaults to native Win32 locale: */
+#if defined(_WIN32) && \
+    !defined(BOOST_REGEX_USE_WIN32_LOCALE) && \
+    !defined(BOOST_REGEX_USE_C_LOCALE) && \
+    !defined(BOOST_REGEX_USE_CPP_LOCALE) && \
+    !defined(BOOST_REGEX_NO_W32) && \
+    !defined(BOOST_REGEX_NO_WIN32_LOCALE)
+#  define BOOST_REGEX_USE_WIN32_LOCALE
+#endif
+/* otherwise use C++ locale if supported: */
+#if !defined(BOOST_REGEX_USE_WIN32_LOCALE) && !defined(BOOST_REGEX_USE_C_LOCALE) && !defined(BOOST_REGEX_USE_CPP_LOCALE) && !defined(BOOST_NO_STD_LOCALE)
+#  define BOOST_REGEX_USE_CPP_LOCALE
+#endif
+/* otherwise use C locale: */
+#if !defined(BOOST_REGEX_USE_WIN32_LOCALE) && !defined(BOOST_REGEX_USE_C_LOCALE) && !defined(BOOST_REGEX_USE_CPP_LOCALE)
+#  define BOOST_REGEX_USE_C_LOCALE
+#endif
+
+#ifndef BOOST_REGEX_MAX_STATE_COUNT
+#  define BOOST_REGEX_MAX_STATE_COUNT 100000000
+#endif
+
+
+/*****************************************************************************
+ *
+ *  Error Handling for exception free compilers:
+ *
+ ****************************************************************************/
+
+#ifdef BOOST_NO_EXCEPTIONS
+/*
+ * If there are no exceptions then we must report critical-errors
+ * the only way we know how; by terminating.
+ */
+#include <stdexcept>
+#include <string>
+#include <boost/throw_exception.hpp>
+
+#  define BOOST_REGEX_NOEH_ASSERT(x)\
+if(0 == (x))\
+{\
+   std::string s("Error: critical regex++ failure in: ");\
+   s.append(#x);\
+   std::runtime_error e(s);\
+   boost::throw_exception(e);\
+}
+#else
+/*
+ * With exceptions then error handling is taken care of and
+ * there is no need for these checks:
+ */
+#  define BOOST_REGEX_NOEH_ASSERT(x)
+#endif
+
+
+/*****************************************************************************
+ *
+ *  Stack protection under MS Windows:
+ *
+ ****************************************************************************/
+
+#if !defined(BOOST_REGEX_NO_W32) && !defined(BOOST_REGEX_V3)
+#  if(defined(_WIN32) || defined(_WIN64) || defined(_WINCE)) \
+        && !(defined(__GNUC__) || defined(__BORLANDC__) && defined(__clang__)) \
+        && !(defined(__BORLANDC__) && (__BORLANDC__ >= 0x600)) \
+        && !(defined(__MWERKS__) && (__MWERKS__ <= 0x3003))
+#     define BOOST_REGEX_HAS_MS_STACK_GUARD
+#  endif
+#elif defined(BOOST_REGEX_HAS_MS_STACK_GUARD)
+#  undef BOOST_REGEX_HAS_MS_STACK_GUARD
+#endif
+
+#if defined(__cplusplus) && defined(BOOST_REGEX_HAS_MS_STACK_GUARD)
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+BOOST_REGEX_DECL void BOOST_REGEX_CALL reset_stack_guard_page();
+
+}
+}
+
+#endif
+
+
+/*****************************************************************************
+ *
+ *  Algorithm selection and configuration.
+ *  These options are now obsolete for C++11 and later (regex v5).
+ *
+ ****************************************************************************/
+
+#if !defined(BOOST_REGEX_RECURSIVE) && !defined(BOOST_REGEX_NON_RECURSIVE)
+#  if defined(BOOST_REGEX_HAS_MS_STACK_GUARD) && !defined(_STLP_DEBUG) && !defined(__STL_DEBUG) && !(defined(_MSC_VER) && (_MSC_VER >= 1400)) && defined(BOOST_REGEX_CXX03)
+#     define BOOST_REGEX_RECURSIVE
+#  else
+#     define BOOST_REGEX_NON_RECURSIVE
+#  endif
+#endif
+
+#ifdef BOOST_REGEX_NON_RECURSIVE
+#  ifdef BOOST_REGEX_RECURSIVE
+#     error "Can't set both BOOST_REGEX_RECURSIVE and BOOST_REGEX_NON_RECURSIVE"
+#  endif
+#  ifndef BOOST_REGEX_BLOCKSIZE
+#     define BOOST_REGEX_BLOCKSIZE 4096
+#  endif
+#  if BOOST_REGEX_BLOCKSIZE < 512
+#     error "BOOST_REGEX_BLOCKSIZE must be at least 512"
+#  endif
+#  ifndef BOOST_REGEX_MAX_BLOCKS
+#     define BOOST_REGEX_MAX_BLOCKS 1024
+#  endif
+#  ifdef BOOST_REGEX_HAS_MS_STACK_GUARD
+#     undef BOOST_REGEX_HAS_MS_STACK_GUARD
+#  endif
+#  ifndef BOOST_REGEX_MAX_CACHE_BLOCKS
+#     define BOOST_REGEX_MAX_CACHE_BLOCKS 16
+#  endif
+#endif
+
+
+/*****************************************************************************
+ *
+ *  Diagnostics:
+ *
+ ****************************************************************************/
+
+#ifdef BOOST_REGEX_CONFIG_INFO
+BOOST_REGEX_DECL void BOOST_REGEX_CALL print_regex_library_info();
+#endif
+
+#if defined(BOOST_REGEX_DIAG)
+#  pragma message ("BOOST_REGEX_DECL" BOOST_STRINGIZE(=BOOST_REGEX_DECL))
+#  pragma message ("BOOST_REGEX_CALL" BOOST_STRINGIZE(=BOOST_REGEX_CALL))
+#  pragma message ("BOOST_REGEX_CCALL" BOOST_STRINGIZE(=BOOST_REGEX_CCALL))
+#ifdef BOOST_REGEX_USE_C_LOCALE
+#  pragma message ("Using C locale in regex traits class")
+#elif BOOST_REGEX_USE_CPP_LOCALE
+#  pragma message ("Using C++ locale in regex traits class")
+#else
+#  pragma message ("Using Win32 locale in regex traits class")
+#endif
+#if defined(BOOST_REGEX_DYN_LINK) || defined(BOOST_ALL_DYN_LINK)
+#  pragma message ("Dynamic linking enabled")
+#endif
+#if defined(BOOST_REGEX_NO_LIB) || defined(BOOST_ALL_NO_LIB)
+#  pragma message ("Auto-linking disabled")
+#endif
+#ifdef BOOST_REGEX_NO_EXTERNAL_TEMPLATES
+#  pragma message ("Extern templates disabled")
+#endif
+
+#endif
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/config/borland.hpp

@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         boost/regex/config/borland.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: regex borland-specific config setup.
+  */
+
+
+#if defined(__BORLANDC__) && !defined(__clang__)
+#  if (__BORLANDC__ == 0x550) || (__BORLANDC__ == 0x551)
+      // problems with std::basic_string and dll RTL:
+#     if defined(_RTLDLL) && defined(_RWSTD_COMPILE_INSTANTIATE)
+#        ifdef BOOST_REGEX_BUILD_DLL
+#           error _RWSTD_COMPILE_INSTANTIATE must not be defined when building regex++ as a DLL
+#        else
+#           pragma message("Defining _RWSTD_COMPILE_INSTANTIATE when linking to the DLL version of the RTL may produce memory corruption problems in std::basic_string, as a result of separate versions of basic_string's static data in the RTL and you're exe/dll: be warned!!")
+#        endif
+#     endif
+#     ifndef _RTLDLL
+         // this is harmless for a staic link:
+#        define _RWSTD_COMPILE_INSTANTIATE
+#     endif
+      // external templates cause problems for some reason:
+#     define BOOST_REGEX_NO_EXTERNAL_TEMPLATES
+#  endif
+#  if (__BORLANDC__ <= 0x540) && !defined(BOOST_REGEX_NO_LIB) && !defined(_NO_VCL)
+      // C++ Builder 4 and earlier, we can't tell whether we should be using
+      // the VCL runtime or not, do a static link instead:
+#     define BOOST_REGEX_STATIC_LINK
+#  endif
+   //
+   // VCL support:
+   // if we're building a console app then there can't be any VCL (can there?)
+#  if !defined(__CONSOLE__) && !defined(_NO_VCL)
+#     define BOOST_REGEX_USE_VCL
+#  endif
+   //
+   // if this isn't Win32 then don't automatically select link
+   // libraries:
+   //
+#  ifndef _Windows
+#     ifndef BOOST_REGEX_NO_LIB
+#        define BOOST_REGEX_NO_LIB
+#     endif
+#     ifndef BOOST_REGEX_STATIC_LINK
+#        define BOOST_REGEX_STATIC_LINK
+#     endif
+#  endif
+
+#if __BORLANDC__ < 0x600
+//
+// string workarounds:
+//
+#include <cstring>
+#undef strcmp
+#undef strcpy
+#endif
+
+#endif
+
+

lib/third_party/boost/regex/include/boost/regex/config/cwchar.hpp

@@ -0,0 +1,207 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         boost/regex/config/cwchar.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: regex wide character string fixes.
+  */
+
+#ifndef BOOST_REGEX_CONFIG_CWCHAR_HPP
+#define BOOST_REGEX_CONFIG_CWCHAR_HPP
+
+#include <cwchar>
+#include <cwctype>
+#include <boost/config.hpp>
+
+#if defined(__STD_RWCOMPILER_H__) || defined(_RWSTD_VER)
+// apparently this is required for the RW STL on Linux:
+#undef iswalnum
+#undef iswalpha
+#undef iswblank
+#undef iswcntrl
+#undef iswdigit
+#undef iswgraph
+#undef iswlower
+#undef iswprint
+#undef iswprint
+#undef iswpunct
+#undef iswspace
+#undef iswupper
+#undef iswxdigit
+#undef iswctype
+#undef towlower
+#undef towupper
+#undef towctrans
+#undef wctrans
+#undef wctype
+#endif
+
+namespace std{
+
+#ifndef BOOST_NO_STDC_NAMESPACE
+extern "C"{
+#endif
+
+#ifdef iswalnum
+inline int (iswalnum)(wint_t i)
+{ return iswalnum(i); }
+#undef iswalnum
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswalnum;
+#endif
+
+#ifdef iswalpha
+inline int (iswalpha)(wint_t i)
+{ return iswalpha(i); }
+#undef iswalpha
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswalpha;
+#endif
+
+#ifdef iswcntrl
+inline int (iswcntrl)(wint_t i)
+{ return iswcntrl(i); }
+#undef iswcntrl
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswcntrl;
+#endif
+
+#ifdef iswdigit
+inline int (iswdigit)(wint_t i)
+{ return iswdigit(i); }
+#undef iswdigit
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswdigit;
+#endif
+
+#ifdef iswgraph
+inline int (iswgraph)(wint_t i)
+{ return iswgraph(i); }
+#undef iswgraph
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswgraph;
+#endif
+
+#ifdef iswlower
+inline int (iswlower)(wint_t i)
+{ return iswlower(i); }
+#undef iswlower
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswlower;
+#endif
+
+#ifdef iswprint
+inline int (iswprint)(wint_t i)
+{ return iswprint(i); }
+#undef iswprint
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswprint;
+#endif
+
+#ifdef iswpunct
+inline int (iswpunct)(wint_t i)
+{ return iswpunct(i); }
+#undef iswpunct
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswpunct;
+#endif
+
+#ifdef iswspace
+inline int (iswspace)(wint_t i)
+{ return iswspace(i); }
+#undef iswspace
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswspace;
+#endif
+
+#ifdef iswupper
+inline int (iswupper)(wint_t i)
+{ return iswupper(i); }
+#undef iswupper
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswupper;
+#endif
+
+#ifdef iswxdigit
+inline int (iswxdigit)(wint_t i)
+{ return iswxdigit(i); }
+#undef iswxdigit
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::iswxdigit;
+#endif
+
+#ifdef towlower
+inline wint_t (towlower)(wint_t i)
+{ return towlower(i); }
+#undef towlower
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::towlower;
+#endif
+
+#ifdef towupper
+inline wint_t (towupper)(wint_t i)
+{ return towupper(i); }
+#undef towupper
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using :: towupper;
+#endif
+
+#ifdef wcscmp
+inline int (wcscmp)(const wchar_t *p1, const wchar_t *p2)
+{ return wcscmp(p1,p2); }
+#undef wcscmp
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::wcscmp;
+#endif
+
+#ifdef wcscoll
+inline int (wcscoll)(const wchar_t *p1, const wchar_t *p2)
+{ return wcscoll(p1,p2); }
+#undef wcscoll
+#elif defined(BOOST_NO_STDC_NAMESPACE) && !defined(UNDER_CE)
+using ::wcscoll;
+#endif
+
+#ifdef wcscpy
+inline wchar_t *(wcscpy)(wchar_t *p1, const wchar_t *p2)
+{ return wcscpy(p1,p2); }
+#undef wcscpy
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::wcscpy;
+#endif
+
+#ifdef wcslen
+inline size_t (wcslen)(const wchar_t *p)
+{ return wcslen(p); }
+#undef wcslen
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::wcslen;
+#endif
+
+#ifdef wcsxfrm
+size_t wcsxfrm(wchar_t *p1, const wchar_t *p2, size_t s)
+{ return wcsxfrm(p1,p2,s); }
+#undef wcsxfrm
+#elif defined(BOOST_NO_STDC_NAMESPACE)
+using ::wcsxfrm;
+#endif
+
+
+#ifndef BOOST_NO_STDC_NAMESPACE
+} // extern "C"
+#endif
+
+} // namespace std
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/icu.hpp

@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright (c) 2020
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         icu.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Unicode regular expressions on top of the ICU Library.
+  */
+
+#ifndef BOOST_REGEX_ICU_HPP
+#define BOOST_REGEX_ICU_HPP
+
+#include <boost/regex/config.hpp>
+
+#ifdef BOOST_REGEX_CXX03
+#include <boost/regex/v4/icu.hpp>
+#else
+#include <boost/regex/v5/icu.hpp>
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/mfc.hpp

@@ -0,0 +1,186 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         mfc.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Overloads and helpers for using MFC/ATL string types with Boost.Regex.
+  */
+
+#ifndef BOOST_REGEX_MFC_HPP
+#define BOOST_REGEX_MFC_HPP
+
+#include <atlsimpstr.h>
+#include <boost/regex.hpp>
+
+namespace boost{
+
+//
+// define the types used for TCHAR's:
+typedef basic_regex<TCHAR> tregex;
+typedef match_results<TCHAR const*> tmatch;
+typedef regex_iterator<TCHAR const*> tregex_iterator;
+typedef regex_token_iterator<TCHAR const*> tregex_token_iterator;
+
+// Obsolete. Remove
+#define SIMPLE_STRING_PARAM class B, bool b
+#define SIMPLE_STRING_ARG_LIST B, b
+
+//
+// define regex creation functions:
+//
+template <class B, bool b>
+inline basic_regex<B> 
+make_regex(const ATL::CSimpleStringT<B, b>& s, ::boost::regex_constants::syntax_option_type f = boost::regex_constants::normal)
+{
+   basic_regex<B> result(s.GetString(), s.GetString() + s.GetLength(), f);
+   return result;
+}
+//
+// regex_match overloads:
+//
+template <class B, bool b, class A, class T>
+inline bool regex_match(const ATL::CSimpleStringT<B, b>& s,
+                 match_results<const B*, A>& what,
+                 const basic_regex<B, T>& e,
+                 boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   return ::boost::regex_match(s.GetString(),
+                               s.GetString() + s.GetLength(),
+                               what,
+                               e,
+                               f);
+}
+
+template <class B, bool b, class T>
+inline bool regex_match(const ATL::CSimpleStringT<B, b>& s,
+                 const basic_regex<B, T>& e,
+                 boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   return ::boost::regex_match(s.GetString(),
+                               s.GetString() + s.GetLength(),
+                               e,
+                               f);
+}
+//
+// regex_search overloads:
+//
+template <class B, bool b, class A, class T>
+inline bool regex_search(const ATL::CSimpleStringT<B, b>& s,
+                 match_results<const B*, A>& what,
+                 const basic_regex<B, T>& e,
+                 boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   return ::boost::regex_search(s.GetString(),
+                               s.GetString() + s.GetLength(),
+                               what,
+                               e,
+                               f);
+}
+
+template <class B, bool b, class T>
+inline bool regex_search(const ATL::CSimpleStringT<B, b>& s,
+                 const basic_regex<B, T>& e,
+                 boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   return ::boost::regex_search(s.GetString(),
+                               s.GetString() + s.GetLength(),
+                               e,
+                               f);
+}
+//
+// regex_iterator creation:
+//
+template <class B, bool b>
+inline regex_iterator<B const*> 
+make_regex_iterator(const ATL::CSimpleStringT<B, b>& s, const basic_regex<B>& e, ::boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   regex_iterator<B const*> result(s.GetString(), s.GetString() + s.GetLength(), e, f);
+   return result;
+}
+
+template <class B, bool b>
+inline regex_token_iterator<B const*> 
+   make_regex_token_iterator(const ATL::CSimpleStringT<B, b>& s, const basic_regex<B>& e, int sub = 0, ::boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   regex_token_iterator<B const*> result(s.GetString(), s.GetString() + s.GetLength(), e, sub, f);
+   return result;
+}
+
+template <class B, bool b>
+inline regex_token_iterator<B const*> 
+make_regex_token_iterator(const ATL::CSimpleStringT<B, b>& s, const basic_regex<B>& e, const std::vector<int>& subs, ::boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   regex_token_iterator<B const*> result(s.GetString(), s.GetString() + s.GetLength(), e, subs, f);
+   return result;
+}
+
+template <class B, bool b, std::size_t N>
+inline regex_token_iterator<B const*> 
+make_regex_token_iterator(const ATL::CSimpleStringT<B, b>& s, const basic_regex<B>& e, const int (& subs)[N], ::boost::regex_constants::match_flag_type f = boost::regex_constants::match_default)
+{
+   regex_token_iterator<B const*> result(s.GetString(), s.GetString() + s.GetLength(), e, subs, f);
+   return result;
+}
+
+template <class OutputIterator, class BidirectionalIterator, class traits,
+          class B, bool b>
+OutputIterator regex_replace(OutputIterator out,
+                           BidirectionalIterator first,
+                           BidirectionalIterator last,
+                           const basic_regex<B, traits>& e,
+                           const ATL::CSimpleStringT<B, b>& fmt,
+                           match_flag_type flags = match_default)
+{
+   return ::boost::regex_replace(out, first, last, e, fmt.GetString(), flags);
+}
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+template <class B, bool b>
+class mfc_string_out_iterator
+{
+   ATL::CSimpleStringT<B, b>* out;
+public:
+   mfc_string_out_iterator(ATL::CSimpleStringT<B, b>& s) : out(&s) {}
+   mfc_string_out_iterator& operator++() { return *this; }
+   mfc_string_out_iterator& operator++(int) { return *this; }
+   mfc_string_out_iterator& operator*() { return *this; }
+   mfc_string_out_iterator& operator=(B v) 
+   { 
+      out->AppendChar(v); 
+      return *this; 
+   }
+   typedef std::ptrdiff_t difference_type;
+   typedef B value_type;
+   typedef value_type* pointer;
+   typedef value_type& reference;
+   typedef std::output_iterator_tag iterator_category;
+};
+
+}
+
+template <class traits, class B, bool b>
+ATL::CSimpleStringT<B, b> regex_replace(const ATL::CSimpleStringT<B, b>& s,
+                            const basic_regex<B, traits>& e,
+                            const ATL::CSimpleStringT<B, b>& fmt,
+                            match_flag_type flags = match_default)
+{
+   ATL::CSimpleStringT<B, b> result(s.GetManager());
+   BOOST_REGEX_DETAIL_NS::mfc_string_out_iterator<B, b> i(result);
+   regex_replace(i, s.GetString(), s.GetString() + s.GetLength(), e, fmt.GetString(), flags);
+   return result;
+}
+
+} // namespace boost.
+
+#endif

lib/third_party/boost/regex/include/boost/regex/pattern_except.hpp

@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         pattern_except.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares pattern-matching exception classes.
+  */
+
+#ifndef BOOST_RE_PAT_EXCEPT_HPP
+#define BOOST_RE_PAT_EXCEPT_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#ifdef BOOST_REGEX_CXX03
+#include <boost/regex/v4/pattern_except.hpp>
+#else
+#include <boost/regex/v5/pattern_except.hpp>
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/pending/object_cache.hpp

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         object_cache.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Implements a generic object cache.
+  */
+
+#ifndef BOOST_REGEX_OBJECT_CACHE_HPP
+#define BOOST_REGEX_OBJECT_CACHE_HPP
+
+#include <boost/regex/config.hpp>
+#ifdef BOOST_REGEX_CXX03
+#include <boost/regex/v4/object_cache.hpp>
+#else
+#include <boost/regex/v5/object_cache.hpp>
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/pending/static_mutex.hpp

@@ -0,0 +1,182 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         static_mutex.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares static_mutex lock type, there are three different
+  *                implementations: POSIX pthreads, WIN32 threads, and portable,
+  *                these are described in more detail below.
+  */
+
+#ifndef BOOST_REGEX_STATIC_MUTEX_HPP
+#define BOOST_REGEX_STATIC_MUTEX_HPP
+
+#include <boost/config.hpp>
+#include <boost/regex/config.hpp> // dll import/export options.
+
+#ifdef BOOST_HAS_PTHREADS
+#include <pthread.h>
+#endif
+
+#if defined(BOOST_HAS_PTHREADS) && defined(PTHREAD_MUTEX_INITIALIZER)
+//
+// pthreads version:
+// simple wrap around a pthread_mutex_t initialized with
+// PTHREAD_MUTEX_INITIALIZER.
+//
+namespace boost{
+
+class static_mutex;
+
+#define BOOST_STATIC_MUTEX_INIT { PTHREAD_MUTEX_INITIALIZER, }
+
+class BOOST_REGEX_DECL scoped_static_mutex_lock
+{
+public:
+   scoped_static_mutex_lock(static_mutex& mut, bool lk = true);
+   ~scoped_static_mutex_lock();
+   inline bool locked()const
+   {
+      return m_have_lock;
+   }
+   inline operator void const*()const
+   {
+      return locked() ? this : 0;
+   }
+   void lock();
+   void unlock();
+private:
+   static_mutex& m_mutex;
+   bool m_have_lock;
+};
+
+class static_mutex
+{
+public:
+   typedef scoped_static_mutex_lock scoped_lock;
+   pthread_mutex_t m_mutex;
+};
+
+} // namespace boost
+#elif defined(BOOST_HAS_WINTHREADS)
+//
+// Win32 version:
+// Use a 32-bit int as a lock, along with a test-and-set
+// implementation using InterlockedCompareExchange.
+//
+
+#include <boost/cstdint.hpp>
+
+namespace boost{
+
+class BOOST_REGEX_DECL scoped_static_mutex_lock;
+
+class static_mutex
+{
+public:
+   typedef scoped_static_mutex_lock scoped_lock;
+   boost::int32_t m_mutex;
+};
+
+#define BOOST_STATIC_MUTEX_INIT { 0, }
+
+class BOOST_REGEX_DECL scoped_static_mutex_lock
+{
+public:
+   scoped_static_mutex_lock(static_mutex& mut, bool lk = true);
+   ~scoped_static_mutex_lock();
+   operator void const*()const
+   {
+      return locked() ? this : 0;
+   }
+   bool locked()const
+   {
+      return m_have_lock;
+   }
+   void lock();
+   void unlock();
+private:
+   static_mutex& m_mutex;
+   bool m_have_lock;
+   scoped_static_mutex_lock(const scoped_static_mutex_lock&);
+   scoped_static_mutex_lock& operator=(const scoped_static_mutex_lock&);
+};
+
+} // namespace
+
+#else
+//
+// Portable version of a static mutex based on Boost.Thread library:
+// This has to use a single mutex shared by all instances of static_mutex
+// because boost::call_once doesn't alow us to pass instance information
+// down to the initialisation proceedure.  In fact the initialisation routine
+// may need to be called more than once - but only once per instance.
+//
+// Since this preprocessor path is almost never taken, we hide these header
+// dependencies so that build tools don't find them.
+//
+#define BOOST_REGEX_H1 <boost/thread/once.hpp>
+#define BOOST_REGEX_H2 <boost/thread/recursive_mutex.hpp>
+#define BOOST_REGEX_H3 <boost/thread/lock_types.hpp>
+#include BOOST_REGEX_H1
+#include BOOST_REGEX_H2
+#include BOOST_REGEX_H3
+#undef BOOST_REGEX_H1
+#undef BOOST_REGEX_H2
+#undef BOOST_REGEX_H3
+
+namespace boost{
+
+class BOOST_REGEX_DECL scoped_static_mutex_lock;
+extern "C" BOOST_REGEX_DECL void boost_regex_free_static_mutex();
+
+class BOOST_REGEX_DECL static_mutex
+{
+public:
+   typedef scoped_static_mutex_lock scoped_lock;
+   static void init();
+   static boost::recursive_mutex* m_pmutex;
+   static boost::once_flag m_once;
+};
+
+#define BOOST_STATIC_MUTEX_INIT {  }
+
+class BOOST_REGEX_DECL scoped_static_mutex_lock
+{
+public:
+   scoped_static_mutex_lock(static_mutex& mut, bool lk = true);
+   ~scoped_static_mutex_lock();
+   operator void const*()const;
+   bool locked()const;
+   void lock();
+   void unlock();
+private:
+   boost::unique_lock<boost::recursive_mutex>* m_plock;
+   bool m_have_lock;
+};
+
+inline scoped_static_mutex_lock::operator void const*()const
+{
+   return locked() ? this : 0;
+}
+
+inline bool scoped_static_mutex_lock::locked()const
+{
+   return m_have_lock;
+}
+
+} // namespace
+
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/pending/unicode_iterator.hpp

@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright (c) 2020
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         unicode_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Iterator adapters for converting between different Unicode encodings.
+  */
+
+#ifndef BOOST_REGEX_PENDING_UNICODE_ITERATOR_HPP
+#define BOOST_REGEX_PENDING_UNICODE_ITERATOR_HPP
+
+#include <boost/regex/config.hpp>
+
+#if defined(BOOST_REGEX_CXX03)
+#include <boost/regex/v4/unicode_iterator.hpp>
+#else
+#include <boost/regex/v5/unicode_iterator.hpp>
+#endif
+
+
+#endif // BOOST_REGEX_PENDING_UNICODE_ITERATOR_HPP
+

lib/third_party/boost/regex/include/boost/regex/regex_traits.hpp

@@ -0,0 +1,39 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_traits.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression traits classes.
+  */
+
+#ifndef BOOST_REGEX_TRAITS_HPP
+#define BOOST_REGEX_TRAITS_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#  include <boost/regex/config.hpp>
+#endif
+
+#  ifndef BOOST_REGEX_TRAITS_HPP_INCLUDED
+#ifdef BOOST_REGEX_CXX03
+#     include <boost/regex/v4/regex_traits.hpp>
+#else
+#     include <boost/regex/v5/regex_traits.hpp>
+#endif
+#  endif
+
+#endif // include
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/user.hpp

@@ -0,0 +1,95 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         user.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: User settable options.
+  */
+
+// define if you want the regex library to use the C locale
+// even on Win32:
+// #define BOOST_REGEX_USE_C_LOCALE
+
+// define this is you want the regex library to use the C++
+// locale:
+// #define BOOST_REGEX_USE_CPP_LOCALE
+
+// define this if the runtime library is a dll, and you
+// want BOOST_REGEX_DYN_LINK to set up dll exports/imports
+// with __declspec(dllexport)/__declspec(dllimport.)
+// #define BOOST_REGEX_HAS_DLL_RUNTIME
+
+// define this if you want to dynamically link to regex,
+// if the runtime library is also a dll (Probably Win32 specific,
+// and has no effect unless BOOST_REGEX_HAS_DLL_RUNTIME is set):
+// #define BOOST_REGEX_DYN_LINK
+
+// define this if you don't want the lib to automatically
+// select its link libraries:
+// #define BOOST_REGEX_NO_LIB
+
+// define this if templates with switch statements cause problems:
+// #define BOOST_REGEX_NO_TEMPLATE_SWITCH_MERGE
+ 
+// define this to disable Win32 support when available:
+// #define BOOST_REGEX_NO_W32
+
+// define this if bool is not a real type:
+// #define BOOST_REGEX_NO_BOOL
+
+// define this if no template instances are to be placed in
+// the library rather than users object files:
+// #define BOOST_REGEX_NO_EXTERNAL_TEMPLATES
+
+// define this if the forward declarations in regex_fwd.hpp
+// cause more problems than they are worth:
+// #define BOOST_REGEX_NO_FWD
+
+// define this if your compiler supports MS Windows structured
+// exception handling.
+// #define BOOST_REGEX_HAS_MS_STACK_GUARD
+
+// define this if you want to use the recursive algorithm
+// even if BOOST_REGEX_HAS_MS_STACK_GUARD is not defined.
+// NOTE: OBSOLETE!!
+// #define BOOST_REGEX_RECURSIVE
+
+// define this if you want to use the non-recursive
+// algorithm, even if the recursive version would be the default.
+// NOTE: OBSOLETE!!
+// #define BOOST_REGEX_NON_RECURSIVE
+
+// define this if you want to set the size of the memory blocks
+// used by the non-recursive algorithm.
+// #define BOOST_REGEX_BLOCKSIZE 4096
+
+// define this if you want to set the maximum number of memory blocks
+// used by the non-recursive algorithm.
+// #define BOOST_REGEX_MAX_BLOCKS 1024
+
+// define this if you want to set the maximum number of memory blocks
+// cached by the non-recursive algorithm: Normally this is 16, but can be 
+// higher if you have multiple threads all using boost.regex, or lower 
+// if you don't want boost.regex to cache memory.
+// #define BOOST_REGEX_MAX_CACHE_BLOCKS 16
+
+// define this if you want to be able to access extended capture
+// information in your sub_match's (caution this will slow things
+// down quite a bit).
+// #define BOOST_REGEX_MATCH_EXTRA
+
+// define this if you want to enable support for Unicode via ICU.
+// #define BOOST_HAS_ICU
+
+// define this if you want regex to use __cdecl calling convensions, even when __fastcall is available:
+// #define BOOST_REGEX_NO_FASTCALL

lib/third_party/boost/regex/include/boost/regex/v4/basic_regex.hpp

@@ -0,0 +1,797 @@
+/*
+ *
+ * Copyright (c) 1998-2004 John Maddock
+ * Copyright 2011 Garmin Ltd. or its subsidiaries
+ *
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org/ for most recent version.
+  *   FILE         basic_regex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class basic_regex.
+  */
+
+#ifndef BOOST_REGEX_V4_BASIC_REGEX_HPP
+#define BOOST_REGEX_V4_BASIC_REGEX_HPP
+
+#include <boost/type_traits/is_same.hpp>
+#include <boost/container_hash/hash.hpp>
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4251)
+#if BOOST_MSVC < 1700
+#     pragma warning(disable : 4231)
+#endif
+#if BOOST_MSVC < 1600
+#pragma warning(disable : 4660)
+#endif
+#if BOOST_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+//
+// forward declaration, we will need this one later:
+//
+template <class charT, class traits>
+class basic_regex_parser;
+
+template <class I>
+void bubble_down_one(I first, I last)
+{
+   if(first != last)
+   {
+      I next = last - 1;
+      while((next != first) && (*next < *(next-1)))
+      {
+         (next-1)->swap(*next);
+         --next;
+      }
+   }
+}
+
+static const int hash_value_mask = 1 << (std::numeric_limits<int>::digits - 1);
+
+template <class Iterator>
+inline int hash_value_from_capture_name(Iterator i, Iterator j)
+{
+   std::size_t r = boost::hash_range(i, j);
+   r %= ((std::numeric_limits<int>::max)());
+   return static_cast<int>(r) | hash_value_mask;
+}
+
+class named_subexpressions
+{
+public:
+   struct name
+   {
+      template <class charT>
+      name(const charT* i, const charT* j, int idx)
+         : index(idx) 
+      { 
+         hash = hash_value_from_capture_name(i, j); 
+      }
+      name(int h, int idx)
+         : index(idx), hash(h)
+      { 
+      }
+      int index;
+      int hash;
+      bool operator < (const name& other)const
+      {
+         return hash < other.hash;
+      }
+      bool operator == (const name& other)const
+      {
+         return hash == other.hash; 
+      }
+      void swap(name& other)
+      {
+         std::swap(index, other.index);
+         std::swap(hash, other.hash);
+      }
+   };
+
+   typedef std::vector<name>::const_iterator const_iterator;
+   typedef std::pair<const_iterator, const_iterator> range_type;
+
+   named_subexpressions(){}
+
+   template <class charT>
+   void set_name(const charT* i, const charT* j, int index)
+   {
+      m_sub_names.push_back(name(i, j, index));
+      bubble_down_one(m_sub_names.begin(), m_sub_names.end());
+   }
+   template <class charT>
+   int get_id(const charT* i, const charT* j)const
+   {
+      name t(i, j, 0);
+      typename std::vector<name>::const_iterator pos = std::lower_bound(m_sub_names.begin(), m_sub_names.end(), t);
+      if((pos != m_sub_names.end()) && (*pos == t))
+      {
+         return pos->index;
+      }
+      return -1;
+   }
+   template <class charT>
+   range_type equal_range(const charT* i, const charT* j)const
+   {
+      name t(i, j, 0);
+      return std::equal_range(m_sub_names.begin(), m_sub_names.end(), t);
+   }
+   int get_id(int h)const
+   {
+      name t(h, 0);
+      std::vector<name>::const_iterator pos = std::lower_bound(m_sub_names.begin(), m_sub_names.end(), t);
+      if((pos != m_sub_names.end()) && (*pos == t))
+      {
+         return pos->index;
+      }
+      return -1;
+   }
+   range_type equal_range(int h)const
+   {
+      name t(h, 0);
+      return std::equal_range(m_sub_names.begin(), m_sub_names.end(), t);
+   }
+private:
+   std::vector<name> m_sub_names;
+};
+
+//
+// class regex_data:
+// represents the data we wish to expose to the matching algorithms.
+//
+template <class charT, class traits>
+struct regex_data : public named_subexpressions
+{
+   typedef regex_constants::syntax_option_type   flag_type;
+   typedef std::size_t                           size_type;  
+
+   regex_data(const ::boost::shared_ptr<
+      ::boost::regex_traits_wrapper<traits> >& t) 
+      : m_ptraits(t), m_flags(0), m_status(0), m_expression(0), m_expression_len(0),
+         m_mark_count(0), m_first_state(0), m_restart_type(0),
+#if !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) && !(defined(BOOST_MSVC) && (BOOST_MSVC < 1900))
+         m_startmap{ 0 },
+#endif
+         m_can_be_null(0), m_word_mask(0), m_has_recursions(false), m_disable_match_any(false) {}
+   regex_data() 
+      : m_ptraits(new ::boost::regex_traits_wrapper<traits>()), m_flags(0), m_status(0), m_expression(0), m_expression_len(0), 
+         m_mark_count(0), m_first_state(0), m_restart_type(0), 
+#if !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) && !(defined(BOOST_MSVC) && (BOOST_MSVC < 1900))
+      m_startmap{ 0 },
+#endif
+         m_can_be_null(0), m_word_mask(0), m_has_recursions(false), m_disable_match_any(false) {}
+
+   ::boost::shared_ptr<
+      ::boost::regex_traits_wrapper<traits>
+      >                        m_ptraits;                 // traits class instance
+   flag_type                   m_flags;                   // flags with which we were compiled
+   int                         m_status;                  // error code (0 implies OK).
+   const charT*                m_expression;              // the original expression
+   std::ptrdiff_t              m_expression_len;          // the length of the original expression
+   size_type                   m_mark_count;              // the number of marked sub-expressions
+   BOOST_REGEX_DETAIL_NS::re_syntax_base*  m_first_state;             // the first state of the machine
+   unsigned                    m_restart_type;            // search optimisation type
+   unsigned char               m_startmap[1 << CHAR_BIT]; // which characters can start a match
+   unsigned int                m_can_be_null;             // whether we can match a null string
+   BOOST_REGEX_DETAIL_NS::raw_storage      m_data;                    // the buffer in which our states are constructed
+   typename traits::char_class_type    m_word_mask;       // mask used to determine if a character is a word character
+   std::vector<
+      std::pair<
+      std::size_t, std::size_t> > m_subs;                 // Position of sub-expressions within the *string*.
+   bool                        m_has_recursions;          // whether we have recursive expressions;
+   bool                        m_disable_match_any;       // when set we need to disable the match_any flag as it causes different/buggy behaviour.
+};
+//
+// class basic_regex_implementation
+// pimpl implementation class for basic_regex.
+//
+template <class charT, class traits>
+class basic_regex_implementation
+   : public regex_data<charT, traits>
+{
+public:
+   typedef regex_constants::syntax_option_type   flag_type;
+   typedef std::ptrdiff_t                        difference_type;
+   typedef std::size_t                           size_type; 
+   typedef typename traits::locale_type          locale_type;
+   typedef const charT*                          const_iterator;
+
+   basic_regex_implementation(){}
+   basic_regex_implementation(const ::boost::shared_ptr<
+      ::boost::regex_traits_wrapper<traits> >& t)
+      : regex_data<charT, traits>(t) {}
+   void assign(const charT* arg_first,
+                          const charT* arg_last,
+                          flag_type f)
+   {
+      regex_data<charT, traits>* pdat = this;
+      basic_regex_parser<charT, traits> parser(pdat);
+      parser.parse(arg_first, arg_last, f);
+   }
+
+   locale_type BOOST_REGEX_CALL imbue(locale_type l)
+   { 
+      return this->m_ptraits->imbue(l); 
+   }
+   locale_type BOOST_REGEX_CALL getloc()const
+   { 
+      return this->m_ptraits->getloc(); 
+   }
+   std::basic_string<charT> BOOST_REGEX_CALL str()const
+   {
+      std::basic_string<charT> result;
+      if(this->m_status == 0)
+         result = std::basic_string<charT>(this->m_expression, this->m_expression_len);
+      return result;
+   }
+   const_iterator BOOST_REGEX_CALL expression()const
+   {
+      return this->m_expression;
+   }
+   std::pair<const_iterator, const_iterator> BOOST_REGEX_CALL subexpression(std::size_t n)const
+   {
+      const std::pair<std::size_t, std::size_t>& pi = this->m_subs.at(n);
+      std::pair<const_iterator, const_iterator> p(expression() + pi.first, expression() + pi.second);
+      return p;
+   }
+   //
+   // begin, end:
+   const_iterator BOOST_REGEX_CALL begin()const
+   { 
+      return (this->m_status ? 0 : this->m_expression); 
+   }
+   const_iterator BOOST_REGEX_CALL end()const
+   { 
+      return (this->m_status ? 0 : this->m_expression + this->m_expression_len); 
+   }
+   flag_type BOOST_REGEX_CALL flags()const
+   {
+      return this->m_flags;
+   }
+   size_type BOOST_REGEX_CALL size()const
+   {
+      return this->m_expression_len;
+   }
+   int BOOST_REGEX_CALL status()const
+   {
+      return this->m_status;
+   }
+   size_type BOOST_REGEX_CALL mark_count()const
+   {
+      return this->m_mark_count - 1;
+   }
+   const BOOST_REGEX_DETAIL_NS::re_syntax_base* get_first_state()const
+   {
+      return this->m_first_state;
+   }
+   unsigned get_restart_type()const
+   {
+      return this->m_restart_type;
+   }
+   const unsigned char* get_map()const
+   {
+      return this->m_startmap;
+   }
+   const ::boost::regex_traits_wrapper<traits>& get_traits()const
+   {
+      return *(this->m_ptraits);
+   }
+   bool can_be_null()const
+   {
+      return this->m_can_be_null;
+   }
+   const regex_data<charT, traits>& get_data()const
+   {
+      basic_regex_implementation<charT, traits> const* p = this;
+      return *static_cast<const regex_data<charT, traits>*>(p);
+   }
+};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+//
+// class basic_regex:
+// represents the compiled
+// regular expression:
+//
+
+#ifdef BOOST_REGEX_NO_FWD
+template <class charT, class traits = regex_traits<charT> >
+#else
+template <class charT, class traits >
+#endif
+class basic_regex : public regbase
+{
+public:
+   // typedefs:
+   typedef std::size_t                           traits_size_type;
+   typedef typename traits::string_type          traits_string_type;
+   typedef charT                                 char_type;
+   typedef traits                                traits_type;
+
+   typedef charT                                 value_type;
+   typedef charT&                                reference;
+   typedef const charT&                          const_reference;
+   typedef const charT*                          const_iterator;
+   typedef const_iterator                        iterator;
+   typedef std::ptrdiff_t                        difference_type;
+   typedef std::size_t                           size_type;   
+   typedef regex_constants::syntax_option_type   flag_type;
+   // locale_type
+   // placeholder for actual locale type used by the
+   // traits class to localise *this.
+   typedef typename traits::locale_type          locale_type;
+   
+public:
+   explicit basic_regex(){}
+   explicit basic_regex(const charT* p, flag_type f = regex_constants::normal)
+   {
+      assign(p, f);
+   }
+   basic_regex(const charT* p1, const charT* p2, flag_type f = regex_constants::normal)
+   {
+      assign(p1, p2, f);
+   }
+   basic_regex(const charT* p, size_type len, flag_type f)
+   {
+      assign(p, len, f);
+   }
+   basic_regex(const basic_regex& that)
+      : m_pimpl(that.m_pimpl) {}
+   ~basic_regex(){}
+   basic_regex& BOOST_REGEX_CALL operator=(const basic_regex& that)
+   {
+      return assign(that);
+   }
+   basic_regex& BOOST_REGEX_CALL operator=(const charT* ptr)
+   {
+      return assign(ptr);
+   }
+
+   //
+   // assign:
+   basic_regex& assign(const basic_regex& that)
+   { 
+      m_pimpl = that.m_pimpl;
+      return *this; 
+   }
+   basic_regex& assign(const charT* p, flag_type f = regex_constants::normal)
+   {
+      return assign(p, p + traits::length(p), f);
+   }
+   basic_regex& assign(const charT* p, size_type len, flag_type f)
+   {
+      return assign(p, p + len, f);
+   }
+private:
+   basic_regex& do_assign(const charT* p1,
+                          const charT* p2,
+                          flag_type f);
+public:
+   basic_regex& assign(const charT* p1,
+                          const charT* p2,
+                          flag_type f = regex_constants::normal)
+   {
+      return do_assign(p1, p2, f);
+   }
+#if !defined(BOOST_NO_MEMBER_TEMPLATES)
+
+   template <class ST, class SA>
+   unsigned int BOOST_REGEX_CALL set_expression(const std::basic_string<charT, ST, SA>& p, flag_type f = regex_constants::normal)
+   { 
+      return set_expression(p.data(), p.data() + p.size(), f); 
+   }
+
+   template <class ST, class SA>
+   explicit basic_regex(const std::basic_string<charT, ST, SA>& p, flag_type f = regex_constants::normal)
+   { 
+      assign(p, f); 
+   }
+
+   template <class InputIterator>
+   basic_regex(InputIterator arg_first, InputIterator arg_last, flag_type f = regex_constants::normal)
+   {
+      typedef typename traits::string_type seq_type;
+      seq_type a(arg_first, arg_last);
+      if(!a.empty())
+         assign(static_cast<const charT*>(&*a.begin()), static_cast<const charT*>(&*a.begin() + a.size()), f);
+      else
+         assign(static_cast<const charT*>(0), static_cast<const charT*>(0), f);
+   }
+
+   template <class ST, class SA>
+   basic_regex& BOOST_REGEX_CALL operator=(const std::basic_string<charT, ST, SA>& p)
+   {
+      return assign(p.data(), p.data() + p.size(), regex_constants::normal);
+   }
+
+   template <class string_traits, class A>
+   basic_regex& BOOST_REGEX_CALL assign(
+       const std::basic_string<charT, string_traits, A>& s,
+       flag_type f = regex_constants::normal)
+   {
+      return assign(s.data(), s.data() + s.size(), f);
+   }
+
+   template <class InputIterator>
+   basic_regex& BOOST_REGEX_CALL assign(InputIterator arg_first,
+                          InputIterator arg_last,
+                          flag_type f = regex_constants::normal)
+   {
+      typedef typename traits::string_type seq_type;
+      seq_type a(arg_first, arg_last);
+      if(a.size())
+      {
+         const charT* p1 = &*a.begin();
+         const charT* p2 = &*a.begin() + a.size();
+         return assign(p1, p2, f);
+      }
+      return assign(static_cast<const charT*>(0), static_cast<const charT*>(0), f);
+   }
+#else
+   unsigned int BOOST_REGEX_CALL set_expression(const std::basic_string<charT>& p, flag_type f = regex_constants::normal)
+   { 
+      return set_expression(p.data(), p.data() + p.size(), f); 
+   }
+
+   basic_regex(const std::basic_string<charT>& p, flag_type f = regex_constants::normal)
+   { 
+      assign(p, f); 
+   }
+
+   basic_regex& BOOST_REGEX_CALL operator=(const std::basic_string<charT>& p)
+   {
+      return assign(p.data(), p.data() + p.size(), regex_constants::normal);
+   }
+
+   basic_regex& BOOST_REGEX_CALL assign(
+       const std::basic_string<charT>& s,
+       flag_type f = regex_constants::normal)
+   {
+      return assign(s.data(), s.data() + s.size(), f);
+   }
+
+#endif
+
+   //
+   // locale:
+   locale_type BOOST_REGEX_CALL imbue(locale_type l);
+   locale_type BOOST_REGEX_CALL getloc()const
+   { 
+      return m_pimpl.get() ? m_pimpl->getloc() : locale_type(); 
+   }
+   //
+   // getflags:
+   // retained for backwards compatibility only, "flags"
+   // is now the preferred name:
+   flag_type BOOST_REGEX_CALL getflags()const
+   { 
+      return flags();
+   }
+   flag_type BOOST_REGEX_CALL flags()const
+   { 
+      return m_pimpl.get() ? m_pimpl->flags() : 0;
+   }
+   //
+   // str:
+   std::basic_string<charT> BOOST_REGEX_CALL str()const
+   {
+      return m_pimpl.get() ? m_pimpl->str() : std::basic_string<charT>();
+   }
+   //
+   // begin, end, subexpression:
+   std::pair<const_iterator, const_iterator> BOOST_REGEX_CALL subexpression(std::size_t n)const
+   {
+      if(!m_pimpl.get())
+         boost::throw_exception(std::logic_error("Can't access subexpressions in an invalid regex."));
+      return m_pimpl->subexpression(n);
+   }
+   const_iterator BOOST_REGEX_CALL begin()const
+   { 
+      return (m_pimpl.get() ? m_pimpl->begin() : 0); 
+   }
+   const_iterator BOOST_REGEX_CALL end()const
+   { 
+      return (m_pimpl.get() ? m_pimpl->end() : 0); 
+   }
+   //
+   // swap:
+   void BOOST_REGEX_CALL swap(basic_regex& that)throw()
+   {
+      m_pimpl.swap(that.m_pimpl);
+   }
+   //
+   // size:
+   size_type BOOST_REGEX_CALL size()const
+   { 
+      return (m_pimpl.get() ? m_pimpl->size() : 0); 
+   }
+   //
+   // max_size:
+   size_type BOOST_REGEX_CALL max_size()const
+   { 
+      return UINT_MAX; 
+   }
+   //
+   // empty:
+   bool BOOST_REGEX_CALL empty()const
+   { 
+      return (m_pimpl.get() ? 0 != m_pimpl->status() : true); 
+   }
+
+   size_type BOOST_REGEX_CALL mark_count()const 
+   { 
+      return (m_pimpl.get() ? m_pimpl->mark_count() : 0); 
+   }
+
+   int status()const
+   {
+      return (m_pimpl.get() ? m_pimpl->status() : regex_constants::error_empty);
+   }
+
+   int BOOST_REGEX_CALL compare(const basic_regex& that) const
+   {
+      if(m_pimpl.get() == that.m_pimpl.get())
+         return 0;
+      if(!m_pimpl.get())
+         return -1;
+      if(!that.m_pimpl.get())
+         return 1;
+      if(status() != that.status())
+         return status() - that.status();
+      if(flags() != that.flags())
+         return flags() - that.flags();
+      return str().compare(that.str());
+   }
+   bool BOOST_REGEX_CALL operator==(const basic_regex& e)const
+   { 
+      return compare(e) == 0; 
+   }
+   bool BOOST_REGEX_CALL operator != (const basic_regex& e)const
+   { 
+      return compare(e) != 0; 
+   }
+   bool BOOST_REGEX_CALL operator<(const basic_regex& e)const
+   { 
+      return compare(e) < 0; 
+   }
+   bool BOOST_REGEX_CALL operator>(const basic_regex& e)const
+   { 
+      return compare(e) > 0; 
+   }
+   bool BOOST_REGEX_CALL operator<=(const basic_regex& e)const
+   { 
+      return compare(e) <= 0; 
+   }
+   bool BOOST_REGEX_CALL operator>=(const basic_regex& e)const
+   { 
+      return compare(e) >= 0; 
+   }
+
+   //
+   // The following are deprecated as public interfaces
+   // but are available for compatibility with earlier versions.
+   const charT* BOOST_REGEX_CALL expression()const 
+   { 
+      return (m_pimpl.get() && !m_pimpl->status() ? m_pimpl->expression() : 0); 
+   }
+   unsigned int BOOST_REGEX_CALL set_expression(const charT* p1, const charT* p2, flag_type f = regex_constants::normal)
+   {
+      assign(p1, p2, f | regex_constants::no_except);
+      return status();
+   }
+   unsigned int BOOST_REGEX_CALL set_expression(const charT* p, flag_type f = regex_constants::normal) 
+   { 
+      assign(p, f | regex_constants::no_except); 
+      return status();
+   }
+   unsigned int BOOST_REGEX_CALL error_code()const
+   {
+      return status();
+   }
+   //
+   // private access methods:
+   //
+   const BOOST_REGEX_DETAIL_NS::re_syntax_base* get_first_state()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_first_state();
+   }
+   unsigned get_restart_type()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_restart_type();
+   }
+   const unsigned char* get_map()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_map();
+   }
+   const ::boost::regex_traits_wrapper<traits>& get_traits()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_traits();
+   }
+   bool can_be_null()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->can_be_null();
+   }
+   const BOOST_REGEX_DETAIL_NS::regex_data<charT, traits>& get_data()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_data();
+   }
+   boost::shared_ptr<BOOST_REGEX_DETAIL_NS::named_subexpressions > get_named_subs()const
+   {
+      return m_pimpl;
+   }
+
+private:
+   shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> > m_pimpl;
+};
+
+//
+// out of line members;
+// these are the only members that mutate the basic_regex object,
+// and are designed to provide the strong exception guarantee
+// (in the event of a throw, the state of the object remains unchanged).
+//
+template <class charT, class traits>
+basic_regex<charT, traits>& basic_regex<charT, traits>::do_assign(const charT* p1,
+                        const charT* p2,
+                        flag_type f)
+{
+   shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> > temp;
+   if(!m_pimpl.get())
+   {
+      temp = shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> >(new BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits>());
+   }
+   else
+   {
+      temp = shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> >(new BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits>(m_pimpl->m_ptraits));
+   }
+   temp->assign(p1, p2, f);
+   temp.swap(m_pimpl);
+   return *this;
+}
+
+template <class charT, class traits>
+typename basic_regex<charT, traits>::locale_type BOOST_REGEX_CALL basic_regex<charT, traits>::imbue(locale_type l)
+{ 
+   shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> > temp(new BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits>());
+   locale_type result = temp->imbue(l);
+   temp.swap(m_pimpl);
+   return result;
+}
+
+//
+// non-members:
+//
+template <class charT, class traits>
+void swap(basic_regex<charT, traits>& e1, basic_regex<charT, traits>& e2)
+{
+   e1.swap(e2);
+}
+
+#ifndef BOOST_NO_STD_LOCALE
+template <class charT, class traits, class traits2>
+std::basic_ostream<charT, traits>& 
+   operator << (std::basic_ostream<charT, traits>& os, 
+                const basic_regex<charT, traits2>& e)
+{
+   return (os << e.str());
+}
+#else
+template <class traits>
+std::ostream& operator << (std::ostream& os, const basic_regex<char, traits>& e)
+{
+   return (os << e.str());
+}
+#endif
+
+//
+// class reg_expression:
+// this is provided for backwards compatibility only,
+// it is deprecated, no not use!
+//
+#ifdef BOOST_REGEX_NO_FWD
+template <class charT, class traits = regex_traits<charT> >
+#else
+template <class charT, class traits >
+#endif
+class reg_expression : public basic_regex<charT, traits>
+{
+public:
+   typedef typename basic_regex<charT, traits>::flag_type flag_type;
+   typedef typename basic_regex<charT, traits>::size_type size_type;
+   explicit reg_expression(){}
+   explicit reg_expression(const charT* p, flag_type f = regex_constants::normal)
+      : basic_regex<charT, traits>(p, f){}
+   reg_expression(const charT* p1, const charT* p2, flag_type f = regex_constants::normal)
+      : basic_regex<charT, traits>(p1, p2, f){}
+   reg_expression(const charT* p, size_type len, flag_type f)
+      : basic_regex<charT, traits>(p, len, f){}
+   reg_expression(const reg_expression& that)
+      : basic_regex<charT, traits>(that) {}
+   ~reg_expression(){}
+   reg_expression& BOOST_REGEX_CALL operator=(const reg_expression& that)
+   {
+      return this->assign(that);
+   }
+
+#if !defined(BOOST_NO_MEMBER_TEMPLATES)
+   template <class ST, class SA>
+   explicit reg_expression(const std::basic_string<charT, ST, SA>& p, flag_type f = regex_constants::normal)
+   : basic_regex<charT, traits>(p, f)
+   { 
+   }
+
+   template <class InputIterator>
+   reg_expression(InputIterator arg_first, InputIterator arg_last, flag_type f = regex_constants::normal)
+   : basic_regex<charT, traits>(arg_first, arg_last, f)
+   {
+   }
+
+   template <class ST, class SA>
+   reg_expression& BOOST_REGEX_CALL operator=(const std::basic_string<charT, ST, SA>& p)
+   {
+      this->assign(p);
+      return *this;
+   }
+#else
+   explicit reg_expression(const std::basic_string<charT>& p, flag_type f = regex_constants::normal)
+   : basic_regex<charT, traits>(p, f)
+   { 
+   }
+
+   reg_expression& BOOST_REGEX_CALL operator=(const std::basic_string<charT>& p)
+   {
+      this->assign(p);
+      return *this;
+   }
+#endif
+
+};
+
+#ifdef BOOST_MSVC
+#pragma warning (pop)
+#endif
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/c_regex_traits.hpp

@@ -0,0 +1,511 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         c_regex_traits.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression traits class that wraps the global C locale.
+  */
+
+#ifndef BOOST_C_REGEX_TRAITS_HPP_INCLUDED
+#define BOOST_C_REGEX_TRAITS_HPP_INCLUDED
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+#ifndef BOOST_REGEX_WORKAROUND_HPP
+#include <boost/regex/v4/regex_workaround.hpp>
+#endif
+
+#include <cctype>
+
+#ifdef BOOST_NO_STDC_NAMESPACE
+namespace std{
+   using ::strlen; using ::tolower;
+}
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103 4244)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+
+   namespace BOOST_REGEX_DETAIL_NS {
+
+      enum
+      {
+         char_class_space = 1 << 0,
+         char_class_print = 1 << 1,
+         char_class_cntrl = 1 << 2,
+         char_class_upper = 1 << 3,
+         char_class_lower = 1 << 4,
+         char_class_alpha = 1 << 5,
+         char_class_digit = 1 << 6,
+         char_class_punct = 1 << 7,
+         char_class_xdigit = 1 << 8,
+         char_class_alnum = char_class_alpha | char_class_digit,
+         char_class_graph = char_class_alnum | char_class_punct,
+         char_class_blank = 1 << 9,
+         char_class_word = 1 << 10,
+         char_class_unicode = 1 << 11,
+         char_class_horizontal = 1 << 12,
+         char_class_vertical = 1 << 13
+      };
+
+   }
+
+template <class charT>
+struct c_regex_traits;
+
+template<>
+struct c_regex_traits<char>
+{
+   c_regex_traits(){}
+   typedef char char_type;
+   typedef std::size_t size_type;
+   typedef std::string string_type;
+   struct locale_type{};
+   typedef boost::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::strlen)(p); 
+   }
+
+   char translate(char c) const 
+   { 
+      return c; 
+   }
+   char translate_nocase(char c) const 
+   { 
+      return static_cast<char>((std::tolower)(static_cast<unsigned char>(c))); 
+   }
+
+   static string_type BOOST_REGEX_CALL transform(const char* p1, const char* p2);
+   static string_type BOOST_REGEX_CALL transform_primary(const char* p1, const char* p2);
+
+   static char_class_type BOOST_REGEX_CALL lookup_classname(const char* p1, const char* p2);
+   static string_type BOOST_REGEX_CALL lookup_collatename(const char* p1, const char* p2);
+
+   static bool BOOST_REGEX_CALL isctype(char, char_class_type);
+   static int BOOST_REGEX_CALL value(char, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#ifndef BOOST_NO_WREGEX
+template<>
+struct c_regex_traits<wchar_t>
+{
+   c_regex_traits(){}
+   typedef wchar_t char_type;
+   typedef std::size_t size_type;
+   typedef std::wstring string_type;
+   struct locale_type{};
+   typedef boost::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::wcslen)(p); 
+   }
+
+   wchar_t translate(wchar_t c) const 
+   { 
+      return c; 
+   }
+   wchar_t translate_nocase(wchar_t c) const 
+   { 
+      return (std::towlower)(c); 
+   }
+
+   static string_type BOOST_REGEX_CALL transform(const wchar_t* p1, const wchar_t* p2);
+   static string_type BOOST_REGEX_CALL transform_primary(const wchar_t* p1, const wchar_t* p2);
+
+   static char_class_type BOOST_REGEX_CALL lookup_classname(const wchar_t* p1, const wchar_t* p2);
+   static string_type BOOST_REGEX_CALL lookup_collatename(const wchar_t* p1, const wchar_t* p2);
+
+   static bool BOOST_REGEX_CALL isctype(wchar_t, char_class_type);
+   static int BOOST_REGEX_CALL value(wchar_t, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#endif // BOOST_NO_WREGEX
+
+inline c_regex_traits<char>::string_type BOOST_REGEX_CALL c_regex_traits<char>::transform(const char* p1, const char* p2)
+{
+   std::string result(10, ' ');
+   std::size_t s = result.size();
+   std::size_t r;
+   std::string src(p1, p2);
+   while (s < (r = std::strxfrm(&*result.begin(), src.c_str(), s)))
+   {
+#if defined(_CPPLIB_VER)
+      //
+      // A bug in VC11 and 12 causes the program to hang if we pass a null-string
+      // to std::strxfrm, but only for certain locales :-(
+      // Probably effects Intel and Clang or any compiler using the VC std library (Dinkumware).
+      //
+      if (r == INT_MAX)
+      {
+         result.erase();
+         result.insert(result.begin(), static_cast<char>(0));
+         return result;
+      }
+#endif
+      result.append(r - s + 3, ' ');
+      s = result.size();
+   }
+   result.erase(r);
+   return result;
+}
+
+inline c_regex_traits<char>::string_type BOOST_REGEX_CALL c_regex_traits<char>::transform_primary(const char* p1, const char* p2)
+{
+   static char s_delim;
+   static const int s_collate_type = ::boost::BOOST_REGEX_DETAIL_NS::find_sort_syntax(static_cast<c_regex_traits<char>*>(0), &s_delim);
+   std::string result;
+   //
+   // What we do here depends upon the format of the sort key returned by
+   // sort key returned by this->transform:
+   //
+   switch (s_collate_type)
+   {
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_C:
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_unknown:
+      // the best we can do is translate to lower case, then get a regular sort key:
+   {
+      result.assign(p1, p2);
+      for (std::string::size_type i = 0; i < result.size(); ++i)
+         result[i] = static_cast<char>((std::tolower)(static_cast<unsigned char>(result[i])));
+      result = transform(&*result.begin(), &*result.begin() + result.size());
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_fixed:
+   {
+      // get a regular sort key, and then truncate it:
+      result = transform(p1, p2);
+      result.erase(s_delim);
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_delim:
+      // get a regular sort key, and then truncate everything after the delim:
+      result = transform(p1, p2);
+      if ((!result.empty()) && (result[0] == s_delim))
+         break;
+      std::size_t i;
+      for (i = 0; i < result.size(); ++i)
+      {
+         if (result[i] == s_delim)
+            break;
+      }
+      result.erase(i);
+      break;
+   }
+   if (result.empty())
+      result = std::string(1, char(0));
+   return result;
+}
+
+inline c_regex_traits<char>::char_class_type BOOST_REGEX_CALL c_regex_traits<char>::lookup_classname(const char* p1, const char* p2)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   static const char_class_type masks[] =
+   {
+      0,
+      char_class_alnum,
+      char_class_alpha,
+      char_class_blank,
+      char_class_cntrl,
+      char_class_digit,
+      char_class_digit,
+      char_class_graph,
+      char_class_horizontal,
+      char_class_lower,
+      char_class_lower,
+      char_class_print,
+      char_class_punct,
+      char_class_space,
+      char_class_space,
+      char_class_upper,
+      char_class_unicode,
+      char_class_upper,
+      char_class_vertical,
+      char_class_alnum | char_class_word,
+      char_class_alnum | char_class_word,
+      char_class_xdigit,
+   };
+
+   int idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(p1, p2);
+   if (idx < 0)
+   {
+      std::string s(p1, p2);
+      for (std::string::size_type i = 0; i < s.size(); ++i)
+         s[i] = static_cast<char>((std::tolower)(static_cast<unsigned char>(s[i])));
+      idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(&*s.begin(), &*s.begin() + s.size());
+   }
+   BOOST_REGEX_ASSERT(std::size_t(idx) + 1u < sizeof(masks) / sizeof(masks[0]));
+   return masks[idx + 1];
+}
+
+inline bool BOOST_REGEX_CALL c_regex_traits<char>::isctype(char c, char_class_type mask)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   return
+      ((mask & char_class_space) && (std::isspace)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_print) && (std::isprint)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_cntrl) && (std::iscntrl)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_upper) && (std::isupper)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_lower) && (std::islower)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_alpha) && (std::isalpha)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_digit) && (std::isdigit)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_punct) && (std::ispunct)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_xdigit) && (std::isxdigit)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_blank) && (std::isspace)(static_cast<unsigned char>(c)) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c))
+      || ((mask & char_class_word) && (c == '_'))
+      || ((mask & char_class_vertical) && (::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) || (c == '\v')))
+      || ((mask & char_class_horizontal) && (std::isspace)(static_cast<unsigned char>(c)) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) && (c != '\v'));
+}
+
+inline c_regex_traits<char>::string_type BOOST_REGEX_CALL c_regex_traits<char>::lookup_collatename(const char* p1, const char* p2)
+{
+   std::string s(p1, p2);
+   s = ::boost::BOOST_REGEX_DETAIL_NS::lookup_default_collate_name(s);
+   if (s.empty() && (p2 - p1 == 1))
+      s.append(1, *p1);
+   return s;
+}
+
+inline int BOOST_REGEX_CALL c_regex_traits<char>::value(char c, int radix)
+{
+   char b[2] = { c, '\0', };
+   char* ep;
+   int result = std::strtol(b, &ep, radix);
+   if (ep == b)
+      return -1;
+   return result;
+}
+
+#ifndef BOOST_NO_WREGEX
+
+inline c_regex_traits<wchar_t>::string_type BOOST_REGEX_CALL c_regex_traits<wchar_t>::transform(const wchar_t* p1, const wchar_t* p2)
+{
+   std::size_t r;
+   std::size_t s = 10;
+   std::wstring src(p1, p2);
+   std::wstring result(s, L' ');
+   while (s < (r = std::wcsxfrm(&*result.begin(), src.c_str(), s)))
+   {
+#if defined(_CPPLIB_VER)
+      //
+      // A bug in VC11 and 12 causes the program to hang if we pass a null-string
+      // to std::strxfrm, but only for certain locales :-(
+      // Probably effects Intel and Clang or any compiler using the VC std library (Dinkumware).
+      //
+      if (r == INT_MAX)
+      {
+         result.erase();
+         result.insert(result.begin(), static_cast<wchar_t>(0));
+         return result;
+      }
+#endif
+      result.append(r - s + 3, L' ');
+      s = result.size();
+   }
+   result.erase(r);
+   return result;
+}
+
+inline c_regex_traits<wchar_t>::string_type BOOST_REGEX_CALL c_regex_traits<wchar_t>::transform_primary(const wchar_t* p1, const wchar_t* p2)
+{
+   static wchar_t s_delim;
+   static const int s_collate_type = ::boost::BOOST_REGEX_DETAIL_NS::find_sort_syntax(static_cast<const c_regex_traits<wchar_t>*>(0), &s_delim);
+   std::wstring result;
+   //
+   // What we do here depends upon the format of the sort key returned by
+   // sort key returned by this->transform:
+   //
+   switch (s_collate_type)
+   {
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_C:
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_unknown:
+      // the best we can do is translate to lower case, then get a regular sort key:
+   {
+      result.assign(p1, p2);
+      for (std::wstring::size_type i = 0; i < result.size(); ++i)
+         result[i] = (std::towlower)(result[i]);
+      result = c_regex_traits<wchar_t>::transform(&*result.begin(), &*result.begin() + result.size());
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_fixed:
+   {
+      // get a regular sort key, and then truncate it:
+      result = c_regex_traits<wchar_t>::transform(&*result.begin(), &*result.begin() + result.size());
+      result.erase(s_delim);
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_delim:
+      // get a regular sort key, and then truncate everything after the delim:
+      result = c_regex_traits<wchar_t>::transform(&*result.begin(), &*result.begin() + result.size());
+      if ((!result.empty()) && (result[0] == s_delim))
+         break;
+      std::size_t i;
+      for (i = 0; i < result.size(); ++i)
+      {
+         if (result[i] == s_delim)
+            break;
+      }
+      result.erase(i);
+      break;
+   }
+   if (result.empty())
+      result = std::wstring(1, char(0));
+   return result;
+}
+
+inline c_regex_traits<wchar_t>::char_class_type BOOST_REGEX_CALL c_regex_traits<wchar_t>::lookup_classname(const wchar_t* p1, const wchar_t* p2)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   static const char_class_type masks[] =
+   {
+      0,
+      char_class_alnum,
+      char_class_alpha,
+      char_class_blank,
+      char_class_cntrl,
+      char_class_digit,
+      char_class_digit,
+      char_class_graph,
+      char_class_horizontal,
+      char_class_lower,
+      char_class_lower,
+      char_class_print,
+      char_class_punct,
+      char_class_space,
+      char_class_space,
+      char_class_upper,
+      char_class_unicode,
+      char_class_upper,
+      char_class_vertical,
+      char_class_alnum | char_class_word,
+      char_class_alnum | char_class_word,
+      char_class_xdigit,
+   };
+
+   int idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(p1, p2);
+   if (idx < 0)
+   {
+      std::wstring s(p1, p2);
+      for (std::wstring::size_type i = 0; i < s.size(); ++i)
+         s[i] = (std::towlower)(s[i]);
+      idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(&*s.begin(), &*s.begin() + s.size());
+   }
+   BOOST_REGEX_ASSERT(idx + 1 < static_cast<int>(sizeof(masks) / sizeof(masks[0])));
+   return masks[idx + 1];
+}
+
+inline bool BOOST_REGEX_CALL c_regex_traits<wchar_t>::isctype(wchar_t c, char_class_type mask)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   return
+      ((mask & char_class_space) && (std::iswspace)(c))
+      || ((mask & char_class_print) && (std::iswprint)(c))
+      || ((mask & char_class_cntrl) && (std::iswcntrl)(c))
+      || ((mask & char_class_upper) && (std::iswupper)(c))
+      || ((mask & char_class_lower) && (std::iswlower)(c))
+      || ((mask & char_class_alpha) && (std::iswalpha)(c))
+      || ((mask & char_class_digit) && (std::iswdigit)(c))
+      || ((mask & char_class_punct) && (std::iswpunct)(c))
+      || ((mask & char_class_xdigit) && (std::iswxdigit)(c))
+      || ((mask & char_class_blank) && (std::iswspace)(c) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c))
+      || ((mask & char_class_word) && (c == '_'))
+      || ((mask & char_class_unicode) && (c & ~static_cast<wchar_t>(0xff)))
+      || ((mask & char_class_vertical) && (::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) || (c == L'\v')))
+      || ((mask & char_class_horizontal) && (std::iswspace)(c) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) && (c != L'\v'));
+}
+
+inline c_regex_traits<wchar_t>::string_type BOOST_REGEX_CALL c_regex_traits<wchar_t>::lookup_collatename(const wchar_t* p1, const wchar_t* p2)
+{
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4244)
+#endif
+   std::string name(p1, p2);
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+   name = ::boost::BOOST_REGEX_DETAIL_NS::lookup_default_collate_name(name);
+   if (!name.empty())
+      return string_type(name.begin(), name.end());
+   if (p2 - p1 == 1)
+      return string_type(1, *p1);
+   return string_type();
+}
+
+inline int BOOST_REGEX_CALL c_regex_traits<wchar_t>::value(wchar_t c, int radix)
+{
+#ifdef BOOST_BORLANDC
+   // workaround for broken wcstol:
+   if ((std::iswxdigit)(c) == 0)
+      return -1;
+#endif
+   wchar_t b[2] = { c, '\0', };
+   wchar_t* ep;
+   int result = std::wcstol(b, &ep, radix);
+   if (ep == b)
+      return -1;
+   return result;
+}
+
+#endif
+
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/char_regex_traits.hpp

@@ -0,0 +1,81 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         char_regex_traits.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares deprecated traits classes char_regex_traits<>.
+  */
+
+
+#ifndef BOOST_REGEX_V4_CHAR_REGEX_TRAITS_HPP
+#define BOOST_REGEX_V4_CHAR_REGEX_TRAITS_HPP
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+
+namespace deprecated{
+//
+// class char_regex_traits_i
+// provides case insensitive traits classes (deprecated):
+template <class charT>
+class char_regex_traits_i : public regex_traits<charT> {};
+
+template<>
+class char_regex_traits_i<char> : public regex_traits<char>
+{
+public:
+   typedef char char_type;
+   typedef unsigned char uchar_type;
+   typedef unsigned int size_type;
+   typedef regex_traits<char> base_type;
+
+};
+
+#ifndef BOOST_NO_WREGEX
+template<>
+class char_regex_traits_i<wchar_t> : public regex_traits<wchar_t>
+{
+public:
+   typedef wchar_t char_type;
+   typedef unsigned short uchar_type;
+   typedef unsigned int size_type;
+   typedef regex_traits<wchar_t> base_type;
+
+};
+#endif
+} // namespace deprecated
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif // include
+

lib/third_party/boost/regex/include/boost/regex/v4/cregex.hpp

@@ -0,0 +1,213 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         cregex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares POSIX API functions
+  *                + boost::RegEx high level wrapper.
+  */
+
+#ifndef BOOST_RE_CREGEX_HPP_INCLUDED
+#define BOOST_RE_CREGEX_HPP_INCLUDED
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+#include <boost/regex/v4/match_flags.hpp>
+#include <boost/regex/v4/error_type.hpp>
+
+#ifdef __cplusplus
+#include <cstddef>
+#else
+#include <stddef.h>
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+/* include these defs only for POSIX compatablity */
+#ifdef __cplusplus
+namespace boost{
+extern "C" {
+#endif
+
+#if defined(__cplusplus) && !defined(BOOST_NO_STDC_NAMESPACE)
+typedef std::ptrdiff_t regoff_t;
+typedef std::size_t regsize_t;
+#else
+typedef ptrdiff_t regoff_t;
+typedef size_t regsize_t;
+#endif
+
+typedef struct
+{
+   unsigned int re_magic;
+#ifdef __cplusplus
+   std::size_t  re_nsub;      /* number of parenthesized subexpressions */
+#else
+   size_t re_nsub; 
+#endif
+   const char*  re_endp;       /* end pointer for REG_PEND */
+   void* guts;                /* none of your business :-) */
+   match_flag_type eflags;        /* none of your business :-) */
+} regex_tA;
+
+#ifndef BOOST_NO_WREGEX
+typedef struct
+{
+   unsigned int re_magic;
+#ifdef __cplusplus
+   std::size_t  re_nsub;         /* number of parenthesized subexpressions */
+#else
+   size_t re_nsub;
+#endif
+   const wchar_t* re_endp;       /* end pointer for REG_PEND */
+   void* guts;                   /* none of your business :-) */
+   match_flag_type eflags;           /* none of your business :-) */
+} regex_tW;
+#endif
+
+typedef struct
+{
+   regoff_t rm_so;      /* start of match */
+   regoff_t rm_eo;      /* end of match */
+} regmatch_t;
+
+/* regcomp() flags */
+typedef enum{
+   REG_BASIC = 0000,
+   REG_EXTENDED = 0001,
+   REG_ICASE = 0002,
+   REG_NOSUB = 0004,
+   REG_NEWLINE = 0010,
+   REG_NOSPEC = 0020,
+   REG_PEND = 0040,
+   REG_DUMP = 0200,
+   REG_NOCOLLATE = 0400,
+   REG_ESCAPE_IN_LISTS = 01000,
+   REG_NEWLINE_ALT = 02000,
+   REG_PERLEX = 04000,
+
+   REG_PERL = REG_EXTENDED | REG_NOCOLLATE | REG_ESCAPE_IN_LISTS | REG_PERLEX,
+   REG_AWK = REG_EXTENDED | REG_ESCAPE_IN_LISTS,
+   REG_GREP = REG_BASIC | REG_NEWLINE_ALT,
+   REG_EGREP = REG_EXTENDED | REG_NEWLINE_ALT,
+
+   REG_ASSERT = 15,
+   REG_INVARG = 16,
+   REG_ATOI = 255,   /* convert name to number (!) */
+   REG_ITOA = 0400   /* convert number to name (!) */
+} reg_comp_flags;
+
+/* regexec() flags */
+typedef enum{
+   REG_NOTBOL =    00001,
+   REG_NOTEOL =    00002,
+   REG_STARTEND =  00004
+} reg_exec_flags;
+
+/*
+ * POSIX error codes:
+ */
+typedef unsigned reg_error_t;
+typedef reg_error_t reg_errcode_t;  /* backwards compatibility */
+
+static const reg_error_t REG_NOERROR = 0;   /* Success.  */
+static const reg_error_t REG_NOMATCH = 1;   /* Didn't find a match (for regexec).  */
+
+  /* POSIX regcomp return error codes.  (In the order listed in the
+     standard.)  */
+static const reg_error_t REG_BADPAT = 2;    /* Invalid pattern.  */
+static const reg_error_t REG_ECOLLATE = 3;  /* Undefined collating element.  */
+static const reg_error_t REG_ECTYPE = 4;    /* Invalid character class name.  */
+static const reg_error_t REG_EESCAPE = 5;   /* Trailing backslash.  */
+static const reg_error_t REG_ESUBREG = 6;   /* Invalid back reference.  */
+static const reg_error_t REG_EBRACK = 7;    /* Unmatched left bracket.  */
+static const reg_error_t REG_EPAREN = 8;    /* Parenthesis imbalance.  */
+static const reg_error_t REG_EBRACE = 9;    /* Unmatched \{.  */
+static const reg_error_t REG_BADBR = 10;    /* Invalid contents of \{\}.  */
+static const reg_error_t REG_ERANGE = 11;   /* Invalid range end.  */
+static const reg_error_t REG_ESPACE = 12;   /* Ran out of memory.  */
+static const reg_error_t REG_BADRPT = 13;   /* No preceding re for repetition op.  */
+static const reg_error_t REG_EEND = 14;     /* unexpected end of expression */
+static const reg_error_t REG_ESIZE = 15;    /* expression too big */
+static const reg_error_t REG_ERPAREN = 8;   /* = REG_EPAREN : unmatched right parenthesis */
+static const reg_error_t REG_EMPTY = 17;    /* empty expression */
+static const reg_error_t REG_E_MEMORY = 15; /* = REG_ESIZE : out of memory */
+static const reg_error_t REG_ECOMPLEXITY = 18; /* complexity too high */
+static const reg_error_t REG_ESTACK = 19;   /* out of stack space */
+static const reg_error_t REG_E_PERL = 20;   /* Perl (?...) error */
+static const reg_error_t REG_E_UNKNOWN = 21; /* unknown error */
+static const reg_error_t REG_ENOSYS = 21;   /* = REG_E_UNKNOWN : Reserved. */
+
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompA(regex_tA*, const char*, int);
+BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorA(int, const regex_tA*, char*, regsize_t);
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecA(const regex_tA*, const char*, regsize_t, regmatch_t*, int);
+BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeA(regex_tA*);
+
+#ifndef BOOST_NO_WREGEX
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompW(regex_tW*, const wchar_t*, int);
+BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorW(int, const regex_tW*, wchar_t*, regsize_t);
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecW(const regex_tW*, const wchar_t*, regsize_t, regmatch_t*, int);
+BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeW(regex_tW*);
+#endif
+
+#ifdef UNICODE
+#define regcomp regcompW
+#define regerror regerrorW
+#define regexec regexecW
+#define regfree regfreeW
+#define regex_t regex_tW
+#else
+#define regcomp regcompA
+#define regerror regerrorA
+#define regexec regexecA
+#define regfree regfreeA
+#define regex_t regex_tA
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+} /* namespace */
+#endif
+
+#endif /* include guard */
+
+
+
+
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/error_type.hpp

@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright (c) 2003-2005
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         error_type.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression error type enumerator.
+  */
+
+#ifndef BOOST_REGEX_ERROR_TYPE_HPP
+#define BOOST_REGEX_ERROR_TYPE_HPP
+
+#ifdef __cplusplus
+namespace boost{
+#endif
+
+#ifdef __cplusplus
+namespace regex_constants{
+
+enum error_type{
+
+   error_ok = 0,         /* not used */
+   error_no_match = 1,   /* not used */
+   error_bad_pattern = 2,
+   error_collate = 3,
+   error_ctype = 4,
+   error_escape = 5,
+   error_backref = 6,
+   error_brack = 7,
+   error_paren = 8,
+   error_brace = 9,
+   error_badbrace = 10,
+   error_range = 11,
+   error_space = 12,
+   error_badrepeat = 13,
+   error_end = 14,    /* not used */
+   error_size = 15,
+   error_right_paren = 16,  /* not used */
+   error_empty = 17,
+   error_complexity = 18,
+   error_stack = 19,
+   error_perl_extension = 20,
+   error_unknown = 21
+};
+
+}
+}
+#endif /* __cplusplus */
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/indexed_bit_flag.hpp

@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright (c) 2020
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         basic_regex_parser.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class basic_regex_parser.
+  */
+
+#include <boost/regex/config.hpp>
+#include <set>
+
+#ifndef BOOST_REGEX_V4_INDEXED_BIT_FLAG_HPP
+#define BOOST_REGEX_V4_INDEXED_BIT_FLAG_HPP
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+class indexed_bit_flag
+{
+   boost::uint64_t low_mask;
+   std::set<std::size_t> mask_set;
+public:
+   indexed_bit_flag() : low_mask(0) {}
+   void set(std::size_t i)
+   {
+      if (i < std::numeric_limits<boost::uint64_t>::digits - 1)
+         low_mask |= static_cast<boost::uint64_t>(1u) << i;
+      else
+         mask_set.insert(i);
+   }
+   bool test(std::size_t i)
+   {
+      if (i < std::numeric_limits<boost::uint64_t>::digits - 1)
+         return low_mask & static_cast<boost::uint64_t>(1u) << i ? true : false;
+      else
+         return mask_set.find(i) != mask_set.end();
+   }
+};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/iterator_category.hpp

@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_match.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Iterator traits for selecting an iterator type as
+  *                an integral constant expression.
+  */
+
+
+#ifndef BOOST_REGEX_ITERATOR_CATEGORY_HPP
+#define BOOST_REGEX_ITERATOR_CATEGORY_HPP
+
+#include <iterator>
+#include <boost/type_traits/is_convertible.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+
+namespace boost{
+namespace detail{
+
+template <class I>
+struct is_random_imp
+{
+#ifndef BOOST_NO_STD_ITERATOR_TRAITS
+private:
+   typedef typename std::iterator_traits<I>::iterator_category cat;
+public:
+   BOOST_STATIC_CONSTANT(bool, value = (::boost::is_convertible<cat*, std::random_access_iterator_tag*>::value));
+#else
+   BOOST_STATIC_CONSTANT(bool, value = false);
+#endif
+};
+
+template <class I>
+struct is_random_pointer_imp
+{
+   BOOST_STATIC_CONSTANT(bool, value = true);
+};
+
+template <bool is_pointer_type>
+struct is_random_imp_selector
+{
+   template <class I>
+   struct rebind
+   {
+      typedef is_random_imp<I> type;
+   };
+};
+
+template <>
+struct is_random_imp_selector<true>
+{
+   template <class I>
+   struct rebind
+   {
+      typedef is_random_pointer_imp<I> type;
+   };
+};
+
+}
+
+template <class I>
+struct is_random_access_iterator
+{
+private:
+   typedef detail::is_random_imp_selector< ::boost::is_pointer<I>::value> selector;
+   typedef typename selector::template rebind<I> bound_type;
+   typedef typename bound_type::type answer;
+public:
+   BOOST_STATIC_CONSTANT(bool, value = answer::value);
+};
+
+#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+template <class I>
+const bool is_random_access_iterator<I>::value;
+#endif
+
+}
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v4/iterator_traits.hpp

@@ -0,0 +1,135 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         iterator_traits.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares iterator traits workarounds.
+  */
+
+#ifndef BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
+#define BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+#if defined(BOOST_NO_STD_ITERATOR_TRAITS)
+
+template <class T>
+struct regex_iterator_traits 
+{
+  typedef typename T::iterator_category iterator_category;
+  typedef typename T::value_type        value_type;
+#if !defined(BOOST_NO_STD_ITERATOR)
+  typedef typename T::difference_type   difference_type;
+  typedef typename T::pointer           pointer;
+  typedef typename T::reference         reference;
+#else
+  typedef std::ptrdiff_t                difference_type;
+  typedef value_type*                   pointer;
+  typedef value_type&                   reference;
+#endif
+};
+
+template <class T>
+struct pointer_iterator_traits
+{
+   typedef std::ptrdiff_t difference_type;
+   typedef T value_type;
+   typedef T* pointer;
+   typedef T& reference;
+   typedef std::random_access_iterator_tag iterator_category;
+};
+template <class T>
+struct const_pointer_iterator_traits
+{
+   typedef std::ptrdiff_t difference_type;
+   typedef T value_type;
+   typedef const T* pointer;
+   typedef const T& reference;
+   typedef std::random_access_iterator_tag iterator_category;
+};
+
+template<>
+struct regex_iterator_traits<char*> : pointer_iterator_traits<char>{};
+template<>
+struct regex_iterator_traits<const char*> : const_pointer_iterator_traits<char>{};
+template<>
+struct regex_iterator_traits<wchar_t*> : pointer_iterator_traits<wchar_t>{};
+template<>
+struct regex_iterator_traits<const wchar_t*> : const_pointer_iterator_traits<wchar_t>{};
+//
+// the follwoing are needed for ICU support:
+//
+template<>
+struct regex_iterator_traits<unsigned char*> : pointer_iterator_traits<char>{};
+template<>
+struct regex_iterator_traits<const unsigned char*> : const_pointer_iterator_traits<char>{};
+template<>
+struct regex_iterator_traits<int*> : pointer_iterator_traits<int>{};
+template<>
+struct regex_iterator_traits<const int*> : const_pointer_iterator_traits<int>{};
+
+#ifdef BOOST_REGEX_HAS_OTHER_WCHAR_T
+template<>
+struct regex_iterator_traits<unsigned short*> : pointer_iterator_traits<unsigned short>{};
+template<>
+struct regex_iterator_traits<const unsigned short*> : const_pointer_iterator_traits<unsigned short>{};
+#endif
+
+#if defined(__SGI_STL_PORT) && defined(__STL_DEBUG)
+template<>
+struct regex_iterator_traits<std::string::iterator> : pointer_iterator_traits<char>{};
+template<>
+struct regex_iterator_traits<std::string::const_iterator> : const_pointer_iterator_traits<char>{};
+#ifndef BOOST_NO_STD_WSTRING
+template<>
+struct regex_iterator_traits<std::wstring::iterator> : pointer_iterator_traits<wchar_t>{};
+template<>
+struct regex_iterator_traits<std::wstring::const_iterator> : const_pointer_iterator_traits<wchar_t>{};
+#endif // BOOST_NO_WSTRING
+#endif // stport
+
+#else
+
+template <class T>
+struct regex_iterator_traits : public std::iterator_traits<T> {};
+
+#endif
+
+} // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v4/match_flags.hpp

@@ -0,0 +1,161 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         match_flags.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares match_flags type.
+  */
+
+#ifndef BOOST_REGEX_V4_MATCH_FLAGS
+#define BOOST_REGEX_V4_MATCH_FLAGS
+
+#ifdef __cplusplus
+#  include <boost/cstdint.hpp>
+#endif
+
+#ifdef __cplusplus
+namespace boost{
+   namespace regex_constants{
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#if BOOST_MSVC >= 1800
+#pragma warning(disable : 26812)
+#endif
+#endif
+
+typedef enum _match_flags
+{
+   match_default = 0,
+   match_not_bol = 1,                                /* first is not start of line */
+   match_not_eol = match_not_bol << 1,               /* last is not end of line */
+   match_not_bob = match_not_eol << 1,               /* first is not start of buffer */
+   match_not_eob = match_not_bob << 1,               /* last is not end of buffer */
+   match_not_bow = match_not_eob << 1,               /* first is not start of word */
+   match_not_eow = match_not_bow << 1,               /* last is not end of word */
+   match_not_dot_newline = match_not_eow << 1,       /* \n is not matched by '.' */
+   match_not_dot_null = match_not_dot_newline << 1,  /* '\0' is not matched by '.' */
+   match_prev_avail = match_not_dot_null << 1,       /* *--first is a valid expression */
+   match_init = match_prev_avail << 1,               /* internal use */
+   match_any = match_init << 1,                      /* don't care what we match */
+   match_not_null = match_any << 1,                  /* string can't be null */
+   match_continuous = match_not_null << 1,           /* each grep match must continue from */
+                                                     /* uninterrupted from the previous one */
+   match_partial = match_continuous << 1,            /* find partial matches */
+   
+   match_stop = match_partial << 1,                  /* stop after first match (grep) V3 only */
+   match_not_initial_null = match_stop,              /* don't match initial null, V4 only */
+   match_all = match_stop << 1,                      /* must find the whole of input even if match_any is set */
+   match_perl = match_all << 1,                      /* Use perl matching rules */
+   match_posix = match_perl << 1,                    /* Use POSIX matching rules */
+   match_nosubs = match_posix << 1,                  /* don't trap marked subs */
+   match_extra = match_nosubs << 1,                  /* include full capture information for repeated captures */
+   match_single_line = match_extra << 1,             /* treat text as single line and ignore any \n's when matching ^ and $. */
+   match_unused1 = match_single_line << 1,           /* unused */
+   match_unused2 = match_unused1 << 1,               /* unused */
+   match_unused3 = match_unused2 << 1,               /* unused */
+   match_max = match_unused3,
+
+   format_perl = 0,                                  /* perl style replacement */
+   format_default = 0,                               /* ditto. */
+   format_sed = match_max << 1,                      /* sed style replacement. */
+   format_all = format_sed << 1,                     /* enable all extensions to syntax. */
+   format_no_copy = format_all << 1,                 /* don't copy non-matching segments. */
+   format_first_only = format_no_copy << 1,          /* Only replace first occurrence. */
+   format_is_if = format_first_only << 1,            /* internal use only. */
+   format_literal = format_is_if << 1,               /* treat string as a literal */
+
+   match_not_any = match_not_bol | match_not_eol | match_not_bob 
+      | match_not_eob | match_not_bow | match_not_eow | match_not_dot_newline 
+      | match_not_dot_null | match_prev_avail | match_init | match_not_null
+      | match_continuous | match_partial | match_stop | match_not_initial_null 
+      | match_stop | match_all | match_perl | match_posix | match_nosubs
+      | match_extra | match_single_line | match_unused1 | match_unused2 
+      | match_unused3 | match_max | format_perl | format_default | format_sed
+      | format_all | format_no_copy | format_first_only | format_is_if
+      | format_literal
+
+
+} match_flags;
+
+#if defined(BOOST_BORLANDC) || (defined(_MSC_VER) && (_MSC_VER <= 1310))
+typedef unsigned long match_flag_type;
+#else
+typedef match_flags match_flag_type;
+
+
+#ifdef __cplusplus
+inline match_flags operator&(match_flags m1, match_flags m2)
+{ return static_cast<match_flags>(static_cast<boost::int32_t>(m1) & static_cast<boost::int32_t>(m2)); }
+inline match_flags operator|(match_flags m1, match_flags m2)
+{ return static_cast<match_flags>(static_cast<boost::int32_t>(m1) | static_cast<boost::int32_t>(m2)); }
+inline match_flags operator^(match_flags m1, match_flags m2)
+{ return static_cast<match_flags>(static_cast<boost::int32_t>(m1) ^ static_cast<boost::int32_t>(m2)); }
+inline match_flags operator~(match_flags m1)
+{ return static_cast<match_flags>(~static_cast<boost::int32_t>(m1)); }
+inline match_flags& operator&=(match_flags& m1, match_flags m2)
+{ m1 = m1&m2; return m1; }
+inline match_flags& operator|=(match_flags& m1, match_flags m2)
+{ m1 = m1|m2; return m1; }
+inline match_flags& operator^=(match_flags& m1, match_flags m2)
+{ m1 = m1^m2; return m1; }
+#endif
+#endif
+
+#ifdef __cplusplus
+} /* namespace regex_constants */
+/*
+ * import names into boost for backwards compatibility:
+ */
+using regex_constants::match_flag_type;
+using regex_constants::match_default;
+using regex_constants::match_not_bol;
+using regex_constants::match_not_eol;
+using regex_constants::match_not_bob;
+using regex_constants::match_not_eob;
+using regex_constants::match_not_bow;
+using regex_constants::match_not_eow;
+using regex_constants::match_not_dot_newline;
+using regex_constants::match_not_dot_null;
+using regex_constants::match_prev_avail;
+/* using regex_constants::match_init; */
+using regex_constants::match_any;
+using regex_constants::match_not_null;
+using regex_constants::match_continuous;
+using regex_constants::match_partial;
+/*using regex_constants::match_stop; */
+using regex_constants::match_all;
+using regex_constants::match_perl;
+using regex_constants::match_posix;
+using regex_constants::match_nosubs;
+using regex_constants::match_extra;
+using regex_constants::match_single_line;
+/*using regex_constants::match_max; */
+using regex_constants::format_all;
+using regex_constants::format_sed;
+using regex_constants::format_perl;
+using regex_constants::format_default;
+using regex_constants::format_no_copy;
+using regex_constants::format_first_only;
+/*using regex_constants::format_is_if;*/
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+
+} /* namespace boost */
+#endif /* __cplusplus */
+#endif /* include guard */
+

lib/third_party/boost/regex/include/boost/regex/v4/match_results.hpp

@@ -0,0 +1,716 @@
+/*
+ *
+ * Copyright (c) 1998-2009
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         match_results.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class match_results.
+  */
+
+#ifndef BOOST_REGEX_V4_MATCH_RESULTS_HPP
+#define BOOST_REGEX_V4_MATCH_RESULTS_HPP
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4251)
+#if BOOST_MSVC < 1700
+#     pragma warning(disable : 4231)
+#endif
+#  if BOOST_MSVC < 1600
+#     pragma warning(disable : 4660)
+#  endif
+#endif
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+class named_subexpressions;
+
+}
+
+template <class BidiIterator, class Allocator>
+class match_results
+{ 
+private:
+#ifndef BOOST_NO_STD_ALLOCATOR
+   typedef          std::vector<sub_match<BidiIterator>, Allocator> vector_type;
+#else
+   typedef          std::vector<sub_match<BidiIterator> >           vector_type;
+#endif
+public: 
+   typedef          sub_match<BidiIterator>                         value_type;
+#ifndef BOOST_NO_CXX11_ALLOCATOR
+   typedef typename std::allocator_traits<Allocator>::value_type const &    const_reference;
+#elif  !defined(BOOST_NO_STD_ALLOCATOR) && !(defined(BOOST_MSVC) && defined(_STLPORT_VERSION))
+   typedef typename Allocator::const_reference                              const_reference;
+#else
+   typedef          const value_type&                                       const_reference;
+#endif
+   typedef          const_reference                                         reference;
+   typedef typename vector_type::const_iterator                             const_iterator;
+   typedef          const_iterator                                          iterator;
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<
+                                    BidiIterator>::difference_type          difference_type;
+#ifdef BOOST_NO_CXX11_ALLOCATOR
+   typedef typename Allocator::size_type                                    size_type;
+#else
+   typedef typename std::allocator_traits<Allocator>::size_type             size_type;
+#endif
+   typedef          Allocator                                               allocator_type;
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<
+                                    BidiIterator>::value_type               char_type;
+   typedef          std::basic_string<char_type>                            string_type;
+   typedef          BOOST_REGEX_DETAIL_NS::named_subexpressions                         named_sub_type;
+
+   // construct/copy/destroy:
+   explicit match_results(const Allocator& a = Allocator())
+#ifndef BOOST_NO_STD_ALLOCATOR
+      : m_subs(a), m_base(), m_null(), m_last_closed_paren(0), m_is_singular(true) {}
+#else
+      : m_subs(), m_base(), m_null(), m_last_closed_paren(0), m_is_singular(true) { (void)a; }
+#endif
+   //
+   // IMPORTANT: in the code below, the crazy looking checks around m_is_singular are
+   // all required because it is illegal to copy a singular iterator.
+   // See https://svn.boost.org/trac/boost/ticket/3632.
+   //
+   match_results(const match_results& m)
+      : m_subs(m.m_subs), m_base(), m_null(), m_named_subs(m.m_named_subs), m_last_closed_paren(m.m_last_closed_paren), m_is_singular(m.m_is_singular)
+   {
+      if(!m_is_singular)
+      {
+         m_base = m.m_base;
+         m_null = m.m_null;
+      }
+   }
+   match_results& operator=(const match_results& m)
+   {
+      m_subs = m.m_subs;
+      m_named_subs = m.m_named_subs;
+      m_last_closed_paren = m.m_last_closed_paren;
+      m_is_singular = m.m_is_singular;
+      if(!m_is_singular)
+      {
+         m_base = m.m_base;
+         m_null = m.m_null;
+      }
+      return *this;
+   }
+   ~match_results(){}
+
+   // size:
+   size_type size() const
+   { return empty() ? 0 : m_subs.size() - 2; }
+   size_type max_size() const
+   { return m_subs.max_size(); }
+   bool empty() const
+   { return m_subs.size() < 2; }
+   // element access:
+   difference_type length(int sub = 0) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      sub += 2;
+      if((sub < (int)m_subs.size()) && (sub > 0))
+         return m_subs[sub].length();
+      return 0;
+   }
+   difference_type length(const char_type* sub) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      const char_type* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return length(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT>
+   difference_type length(const charT* sub) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      const charT* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return length(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT, class Traits, class A>
+   difference_type length(const std::basic_string<charT, Traits, A>& sub) const
+   {
+      return length(sub.c_str());
+   }
+   difference_type position(size_type sub = 0) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      sub += 2;
+      if(sub < m_subs.size())
+      {
+         const sub_match<BidiIterator>& s = m_subs[sub];
+         if(s.matched || (sub == 2))
+         {
+            return ::boost::BOOST_REGEX_DETAIL_NS::distance((BidiIterator)(m_base), (BidiIterator)(s.first));
+         }
+      }
+      return ~static_cast<difference_type>(0);
+   }
+   difference_type position(const char_type* sub) const
+   {
+      const char_type* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return position(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT>
+   difference_type position(const charT* sub) const
+   {
+      const charT* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return position(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT, class Traits, class A>
+   difference_type position(const std::basic_string<charT, Traits, A>& sub) const
+   {
+      return position(sub.c_str());
+   }
+   string_type str(int sub = 0) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      sub += 2;
+      string_type result;
+      if(sub < (int)m_subs.size() && (sub > 0))
+      {
+         const sub_match<BidiIterator>& s = m_subs[sub];
+         if(s.matched)
+         {
+            result = s.str();
+         }
+      }
+      return result;
+   }
+   string_type str(const char_type* sub) const
+   {
+      return (*this)[sub].str();
+   }
+   template <class Traits, class A>
+   string_type str(const std::basic_string<char_type, Traits, A>& sub) const
+   {
+      return (*this)[sub].str();
+   }
+   template <class charT>
+   string_type str(const charT* sub) const
+   {
+      return (*this)[sub].str();
+   }
+   template <class charT, class Traits, class A>
+   string_type str(const std::basic_string<charT, Traits, A>& sub) const
+   {
+      return (*this)[sub].str();
+   }
+   const_reference operator[](int sub) const
+   {
+      if(m_is_singular && m_subs.empty())
+         raise_logic_error();
+      sub += 2;
+      if(sub < (int)m_subs.size() && (sub >= 0))
+      {
+         return m_subs[sub];
+      }
+      return m_null;
+   }
+   //
+   // Named sub-expressions:
+   //
+   const_reference named_subexpression(const char_type* i, const char_type* j) const
+   {
+      //
+      // Scan for the leftmost *matched* subexpression with the specified named:
+      //
+      if(m_is_singular)
+         raise_logic_error();
+      BOOST_REGEX_DETAIL_NS::named_subexpressions::range_type r = m_named_subs->equal_range(i, j);
+      while((r.first != r.second) && ((*this)[r.first->index].matched == false))
+         ++r.first;
+      return r.first != r.second ? (*this)[r.first->index] : m_null;
+   }
+   template <class charT>
+   const_reference named_subexpression(const charT* i, const charT* j) const
+   {
+      BOOST_STATIC_ASSERT(sizeof(charT) <= sizeof(char_type));
+      if(i == j)
+         return m_null;
+      std::vector<char_type> s;
+      while(i != j)
+         s.insert(s.end(), *i++);
+      return named_subexpression(&*s.begin(), &*s.begin() + s.size());
+   }
+   int named_subexpression_index(const char_type* i, const char_type* j) const
+   {
+      //
+      // Scan for the leftmost *matched* subexpression with the specified named.
+      // If none found then return the leftmost expression with that name,
+      // otherwise an invalid index:
+      //
+      if(m_is_singular)
+         raise_logic_error();
+      BOOST_REGEX_DETAIL_NS::named_subexpressions::range_type s, r;
+      s = r = m_named_subs->equal_range(i, j);
+      while((r.first != r.second) && ((*this)[r.first->index].matched == false))
+         ++r.first;
+      if(r.first == r.second)
+         r = s;
+      return r.first != r.second ? r.first->index : -20;
+   }
+   template <class charT>
+   int named_subexpression_index(const charT* i, const charT* j) const
+   {
+      BOOST_STATIC_ASSERT(sizeof(charT) <= sizeof(char_type));
+      if(i == j)
+         return -20;
+      std::vector<char_type> s;
+      while(i != j)
+         s.insert(s.end(), *i++);
+      return named_subexpression_index(&*s.begin(), &*s.begin() + s.size());
+   }
+   template <class Traits, class A>
+   const_reference operator[](const std::basic_string<char_type, Traits, A>& s) const
+   {
+      return named_subexpression(s.c_str(), s.c_str() + s.size());
+   }
+   const_reference operator[](const char_type* p) const
+   {
+      const char_type* e = p;
+      while(*e) ++e;
+      return named_subexpression(p, e);
+   }
+
+   template <class charT>
+   const_reference operator[](const charT* p) const
+   {
+      BOOST_STATIC_ASSERT(sizeof(charT) <= sizeof(char_type));
+      if(*p == 0)
+         return m_null;
+      std::vector<char_type> s;
+      while(*p)
+         s.insert(s.end(), *p++);
+      return named_subexpression(&*s.begin(), &*s.begin() + s.size());
+   }
+   template <class charT, class Traits, class A>
+   const_reference operator[](const std::basic_string<charT, Traits, A>& ns) const
+   {
+      BOOST_STATIC_ASSERT(sizeof(charT) <= sizeof(char_type));
+      if(ns.empty())
+         return m_null;
+      std::vector<char_type> s;
+      for(unsigned i = 0; i < ns.size(); ++i)
+         s.insert(s.end(), ns[i]);
+      return named_subexpression(&*s.begin(), &*s.begin() + s.size());
+   }
+
+   const_reference prefix() const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return (*this)[-1];
+   }
+
+   const_reference suffix() const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return (*this)[-2];
+   }
+   const_iterator begin() const
+   {
+      return (m_subs.size() > 2) ? (m_subs.begin() + 2) : m_subs.end();
+   }
+   const_iterator end() const
+   {
+      return m_subs.end();
+   }
+   // format:
+   template <class OutputIterator, class Functor>
+   OutputIterator format(OutputIterator out,
+                         Functor fmt,
+                         match_flag_type flags = format_default) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, OutputIterator>::type F;
+      F func(fmt);
+      return func(*this, out, flags);
+   }
+   template <class Functor>
+   string_type format(Functor fmt, match_flag_type flags = format_default) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      std::basic_string<char_type> result;
+      BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> > i(result);
+
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> > >::type F;
+      F func(fmt);
+
+      func(*this, i, flags);
+      return result;
+   }
+   // format with locale:
+   template <class OutputIterator, class Functor, class RegexT>
+   OutputIterator format(OutputIterator out,
+                         Functor fmt,
+                         match_flag_type flags,
+                         const RegexT& re) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      typedef ::boost::regex_traits_wrapper<typename RegexT::traits_type> traits_type;
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, OutputIterator, traits_type>::type F;
+      F func(fmt);
+      return func(*this, out, flags, re.get_traits());
+   }
+   template <class RegexT, class Functor>
+   string_type format(Functor fmt,
+                      match_flag_type flags,
+                      const RegexT& re) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      typedef ::boost::regex_traits_wrapper<typename RegexT::traits_type> traits_type;
+      std::basic_string<char_type> result;
+      BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> > i(result);
+
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> >, traits_type >::type F;
+      F func(fmt);
+
+      func(*this, i, flags, re.get_traits());
+      return result;
+   }
+
+   const_reference get_last_closed_paren()const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return m_last_closed_paren == 0 ? m_null : (*this)[m_last_closed_paren];
+   }
+
+   allocator_type get_allocator() const
+   {
+#ifndef BOOST_NO_STD_ALLOCATOR
+      return m_subs.get_allocator();
+#else
+     return allocator_type();
+#endif
+   }
+   void swap(match_results& that)
+   {
+      std::swap(m_subs, that.m_subs);
+      std::swap(m_named_subs, that.m_named_subs);
+      std::swap(m_last_closed_paren, that.m_last_closed_paren);
+      if(m_is_singular)
+      {
+         if(!that.m_is_singular)
+         {
+            m_base = that.m_base;
+            m_null = that.m_null;
+         }
+      }
+      else if(that.m_is_singular)
+      {
+         that.m_base = m_base;
+         that.m_null = m_null;
+      }
+      else
+      {
+         std::swap(m_base, that.m_base);
+         std::swap(m_null, that.m_null);
+      }
+      std::swap(m_is_singular, that.m_is_singular);
+   }
+   bool operator==(const match_results& that)const
+   {
+      if(m_is_singular)
+      {
+         return that.m_is_singular;
+      }
+      else if(that.m_is_singular)
+      {
+         return false;
+      }
+      return (m_subs == that.m_subs) && (m_base == that.m_base) && (m_last_closed_paren == that.m_last_closed_paren);
+   }
+   bool operator!=(const match_results& that)const
+   { return !(*this == that); }
+
+#ifdef BOOST_REGEX_MATCH_EXTRA
+   typedef typename sub_match<BidiIterator>::capture_sequence_type capture_sequence_type;
+
+   const capture_sequence_type& captures(int i)const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return (*this)[i].captures();
+   }
+#endif
+
+   //
+   // private access functions:
+   void BOOST_REGEX_CALL set_second(BidiIterator i)
+   {
+      BOOST_REGEX_ASSERT(m_subs.size() > 2);
+      m_subs[2].second = i;
+      m_subs[2].matched = true;
+      m_subs[0].first = i;
+      m_subs[0].matched = (m_subs[0].first != m_subs[0].second);
+      m_null.first = i;
+      m_null.second = i;
+      m_null.matched = false;
+      m_is_singular = false;
+   }
+
+   void BOOST_REGEX_CALL set_second(BidiIterator i, size_type pos, bool m = true, bool escape_k = false)
+   {
+      if(pos)
+         m_last_closed_paren = static_cast<int>(pos);
+      pos += 2;
+      BOOST_REGEX_ASSERT(m_subs.size() > pos);
+      m_subs[pos].second = i;
+      m_subs[pos].matched = m;
+      if((pos == 2) && !escape_k)
+      {
+         m_subs[0].first = i;
+         m_subs[0].matched = (m_subs[0].first != m_subs[0].second);
+         m_null.first = i;
+         m_null.second = i;
+         m_null.matched = false;
+         m_is_singular = false;
+      }
+   }
+   void BOOST_REGEX_CALL set_size(size_type n, BidiIterator i, BidiIterator j)
+   {
+      value_type v(j);
+      size_type len = m_subs.size();
+      if(len > n + 2)
+      {
+         m_subs.erase(m_subs.begin()+n+2, m_subs.end());
+         std::fill(m_subs.begin(), m_subs.end(), v);
+      }
+      else
+      {
+         std::fill(m_subs.begin(), m_subs.end(), v);
+         if(n+2 != len)
+            m_subs.insert(m_subs.end(), n+2-len, v);
+      }
+      m_subs[1].first = i;
+      m_last_closed_paren = 0;
+   }
+   void BOOST_REGEX_CALL set_base(BidiIterator pos)
+   {
+      m_base = pos;
+   }
+   BidiIterator base()const
+   {
+      return m_base;
+   }
+   void BOOST_REGEX_CALL set_first(BidiIterator i)
+   {
+      BOOST_REGEX_ASSERT(m_subs.size() > 2);
+      // set up prefix:
+      m_subs[1].second = i;
+      m_subs[1].matched = (m_subs[1].first != i);
+      // set up $0:
+      m_subs[2].first = i;
+      // zero out everything else:
+      for(size_type n = 3; n < m_subs.size(); ++n)
+      {
+         m_subs[n].first = m_subs[n].second = m_subs[0].second;
+         m_subs[n].matched = false;
+      }
+   }
+   void BOOST_REGEX_CALL set_first(BidiIterator i, size_type pos, bool escape_k = false)
+   {
+      BOOST_REGEX_ASSERT(pos+2 < m_subs.size());
+      if(pos || escape_k)
+      {
+         m_subs[pos+2].first = i;
+         if(escape_k)
+         {
+            m_subs[1].second = i;
+            m_subs[1].matched = (m_subs[1].first != m_subs[1].second);
+         }
+      }
+      else
+         set_first(i);
+   }
+   void BOOST_REGEX_CALL maybe_assign(const match_results<BidiIterator, Allocator>& m);
+
+   void BOOST_REGEX_CALL set_named_subs(boost::shared_ptr<named_sub_type> subs)
+   {
+      m_named_subs = subs;
+   }
+
+private:
+   //
+   // Error handler called when an uninitialized match_results is accessed:
+   //
+   static void raise_logic_error()
+   {
+      std::logic_error e("Attempt to access an uninitialized boost::match_results<> class.");
+      boost::throw_exception(e);
+   }
+
+
+   vector_type            m_subs;                      // subexpressions
+   BidiIterator   m_base;                              // where the search started from
+   sub_match<BidiIterator> m_null;                     // a null match
+   boost::shared_ptr<named_sub_type> m_named_subs;     // Shared copy of named subs in the regex object
+   int m_last_closed_paren;                            // Last ) to be seen - used for formatting
+   bool m_is_singular;                                 // True if our stored iterators are singular
+};
+
+template <class BidiIterator, class Allocator>
+void BOOST_REGEX_CALL match_results<BidiIterator, Allocator>::maybe_assign(const match_results<BidiIterator, Allocator>& m)
+{
+   if(m_is_singular)
+   {
+      *this = m;
+      return;
+   }
+   const_iterator p1, p2;
+   p1 = begin();
+   p2 = m.begin();
+   //
+   // Distances are measured from the start of *this* match, unless this isn't
+   // a valid match in which case we use the start of the whole sequence.  Note that
+   // no subsequent match-candidate can ever be to the left of the first match found.
+   // This ensures that when we are using bidirectional iterators, that distances 
+   // measured are as short as possible, and therefore as efficient as possible
+   // to compute.  Finally note that we don't use the "matched" data member to test
+   // whether a sub-expression is a valid match, because partial matches set this
+   // to false for sub-expression 0.
+   //
+   BidiIterator l_end = this->suffix().second;
+   BidiIterator l_base = (p1->first == l_end) ? this->prefix().first : (*this)[0].first;
+   difference_type len1 = 0;
+   difference_type len2 = 0;
+   difference_type base1 = 0;
+   difference_type base2 = 0;
+   std::size_t i;
+   for(i = 0; i < size(); ++i, ++p1, ++p2)
+   {
+      //
+      // Leftmost takes priority over longest; handle special cases
+      // where distances need not be computed first (an optimisation
+      // for bidirectional iterators: ensure that we don't accidently
+      // compute the length of the whole sequence, as this can be really
+      // expensive).
+      //
+      if(p1->first == l_end)
+      {
+         if(p2->first != l_end)
+         {
+            // p2 must be better than p1, and no need to calculate
+            // actual distances:
+            base1 = 1;
+            base2 = 0;
+            break;
+         }
+         else
+         {
+            // *p1 and *p2 are either unmatched or match end-of sequence,
+            // either way no need to calculate distances:
+            if((p1->matched == false) && (p2->matched == true))
+               break;
+            if((p1->matched == true) && (p2->matched == false))
+               return;
+            continue;
+         }
+      }
+      else if(p2->first == l_end)
+      {
+         // p1 better than p2, and no need to calculate distances:
+         return;
+      }
+      base1 = ::boost::BOOST_REGEX_DETAIL_NS::distance(l_base, p1->first);
+      base2 = ::boost::BOOST_REGEX_DETAIL_NS::distance(l_base, p2->first);
+      BOOST_REGEX_ASSERT(base1 >= 0);
+      BOOST_REGEX_ASSERT(base2 >= 0);
+      if(base1 < base2) return;
+      if(base2 < base1) break;
+
+      len1 = ::boost::BOOST_REGEX_DETAIL_NS::distance((BidiIterator)p1->first, (BidiIterator)p1->second);
+      len2 = ::boost::BOOST_REGEX_DETAIL_NS::distance((BidiIterator)p2->first, (BidiIterator)p2->second);
+      BOOST_REGEX_ASSERT(len1 >= 0);
+      BOOST_REGEX_ASSERT(len2 >= 0);
+      if((len1 != len2) || ((p1->matched == false) && (p2->matched == true)))
+         break;
+      if((p1->matched == true) && (p2->matched == false))
+         return;
+   }
+   if(i == size())
+      return;
+   if(base2 < base1)
+      *this = m;
+   else if((len2 > len1) || ((p1->matched == false) && (p2->matched == true)) )
+      *this = m;
+}
+
+template <class BidiIterator, class Allocator>
+void swap(match_results<BidiIterator, Allocator>& a, match_results<BidiIterator, Allocator>& b)
+{
+   a.swap(b);
+}
+
+#ifndef BOOST_NO_STD_LOCALE
+template <class charT, class traits, class BidiIterator, class Allocator>
+std::basic_ostream<charT, traits>&
+   operator << (std::basic_ostream<charT, traits>& os,
+                const match_results<BidiIterator, Allocator>& s)
+{
+   return (os << s.str());
+}
+#else
+template <class BidiIterator, class Allocator>
+std::ostream& operator << (std::ostream& os,
+                           const match_results<BidiIterator, Allocator>& s)
+{
+   return (os << s.str());
+}
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+

lib/third_party/boost/regex/include/boost/regex/v4/mem_block_cache.hpp

@@ -0,0 +1,183 @@
+ /*
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         mem_block_cache.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: memory block cache used by the non-recursive matcher.
+  */
+
+#ifndef BOOST_REGEX_V4_MEM_BLOCK_CACHE_HPP
+#define BOOST_REGEX_V4_MEM_BLOCK_CACHE_HPP
+
+#include <new>
+#ifdef BOOST_HAS_THREADS
+#include <boost/regex/pending/static_mutex.hpp>
+#endif
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+
+#ifndef BOOST_NO_CXX11_HDR_ATOMIC
+  #include <atomic>
+  #if ATOMIC_POINTER_LOCK_FREE == 2
+    #define BOOST_REGEX_MEM_BLOCK_CACHE_LOCK_FREE
+    #define BOOST_REGEX_ATOMIC_POINTER std::atomic
+  #endif
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+#ifdef BOOST_REGEX_MEM_BLOCK_CACHE_LOCK_FREE /* lock free implementation */
+struct mem_block_cache
+{
+  std::atomic<void*> cache[BOOST_REGEX_MAX_CACHE_BLOCKS];
+
+   ~mem_block_cache()
+   {
+     for (size_t i = 0;i < BOOST_REGEX_MAX_CACHE_BLOCKS; ++i) {
+       if (cache[i].load()) ::operator delete(cache[i].load());
+     }
+   }
+   void* get()
+   {
+     for (size_t i = 0;i < BOOST_REGEX_MAX_CACHE_BLOCKS; ++i) {
+       void* p = cache[i].load();
+       if (p != NULL) {
+         if (cache[i].compare_exchange_strong(p, NULL)) return p;
+       }
+     }
+     return ::operator new(BOOST_REGEX_BLOCKSIZE);
+   }
+   void put(void* ptr)
+   {
+     for (size_t i = 0;i < BOOST_REGEX_MAX_CACHE_BLOCKS; ++i) {
+       void* p = cache[i].load();
+       if (p == NULL) {
+         if (cache[i].compare_exchange_strong(p, ptr)) return;
+       }
+     }
+     ::operator delete(ptr);
+   }
+
+   static mem_block_cache& instance()
+   {
+      static mem_block_cache block_cache = { { {nullptr} } };
+      return block_cache;
+   }
+};
+
+
+#else /* lock-based implementation */
+
+
+struct mem_block_node
+{
+   mem_block_node* next;
+};
+
+struct mem_block_cache
+{
+   // this member has to be statically initialsed:
+   mem_block_node* next;
+   unsigned cached_blocks;
+#ifdef BOOST_HAS_THREADS
+   boost::static_mutex mut;
+#endif
+
+   ~mem_block_cache()
+   {
+      while(next)
+      {
+         mem_block_node* old = next;
+         next = next->next;
+         ::operator delete(old);
+      }
+   }
+   void* get()
+   {
+#ifdef BOOST_HAS_THREADS
+      boost::static_mutex::scoped_lock g(mut);
+#endif
+     if(next)
+      {
+         mem_block_node* result = next;
+         next = next->next;
+         --cached_blocks;
+         return result;
+      }
+      return ::operator new(BOOST_REGEX_BLOCKSIZE);
+   }
+   void put(void* p)
+   {
+#ifdef BOOST_HAS_THREADS
+      boost::static_mutex::scoped_lock g(mut);
+#endif
+      if(cached_blocks >= BOOST_REGEX_MAX_CACHE_BLOCKS)
+      {
+         ::operator delete(p);
+      }
+      else
+      {
+         mem_block_node* old = static_cast<mem_block_node*>(p);
+         old->next = next;
+         next = old;
+         ++cached_blocks;
+      }
+   }
+   static mem_block_cache& instance()
+   {
+#ifdef BOOST_HAS_THREADS
+      static mem_block_cache block_cache = { 0, 0, BOOST_STATIC_MUTEX_INIT, };
+#else
+      static mem_block_cache block_cache = { 0, 0, };
+#endif
+      return block_cache;
+   }
+};
+#endif
+
+#if BOOST_REGEX_MAX_CACHE_BLOCKS == 0
+
+inline void* BOOST_REGEX_CALL get_mem_block()
+{
+   return ::operator new(BOOST_REGEX_BLOCKSIZE);
+}
+
+inline void BOOST_REGEX_CALL put_mem_block(void* p)
+{
+   ::operator delete(p);
+}
+
+#else
+
+inline void* BOOST_REGEX_CALL get_mem_block()
+{
+   return mem_block_cache::instance().get();
+}
+
+inline void BOOST_REGEX_CALL put_mem_block(void* p)
+{
+   mem_block_cache::instance().put(p);
+}
+
+#endif
+}
+} // namespace boost
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v4/object_cache.hpp

@@ -0,0 +1,171 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         object_cache.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Implements a generic object cache.
+  */
+
+#ifndef BOOST_REGEX_OBJECT_CACHE_HPP
+#define BOOST_REGEX_OBJECT_CACHE_HPP
+
+#include <boost/regex/config.hpp>
+#include <boost/shared_ptr.hpp>
+#include <map>
+#include <list>
+#include <stdexcept>
+#include <string>
+#ifdef BOOST_HAS_THREADS
+#include <boost/regex/pending/static_mutex.hpp>
+#endif
+
+namespace boost{
+
+template <class Key, class Object>
+class object_cache
+{
+public:
+   typedef std::pair< ::boost::shared_ptr<Object const>, Key const*> value_type;
+   typedef std::list<value_type> list_type;
+   typedef typename list_type::iterator list_iterator;
+   typedef std::map<Key, list_iterator> map_type;
+   typedef typename map_type::iterator map_iterator;
+   typedef typename list_type::size_type size_type;
+   static boost::shared_ptr<Object const> get(const Key& k, size_type l_max_cache_size);
+
+private:
+   static boost::shared_ptr<Object const> do_get(const Key& k, size_type l_max_cache_size);
+
+   struct data
+   {
+      list_type   cont;
+      map_type    index;
+   };
+
+   // Needed by compilers not implementing the resolution to DR45. For reference,
+   // see http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#45.
+   friend struct data;
+};
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4702)
+#endif
+template <class Key, class Object>
+boost::shared_ptr<Object const> object_cache<Key, Object>::get(const Key& k, size_type l_max_cache_size)
+{
+#ifdef BOOST_HAS_THREADS
+   static boost::static_mutex mut = BOOST_STATIC_MUTEX_INIT;
+   boost::static_mutex::scoped_lock l(mut);
+   if (l)
+   {
+      return do_get(k, l_max_cache_size);
+   }
+   //
+   // what do we do if the lock fails?
+   // for now just throw, but we should never really get here...
+   //
+   ::boost::throw_exception(std::runtime_error("Error in thread safety code: could not acquire a lock"));
+#if defined(BOOST_NO_UNREACHABLE_RETURN_DETECTION) || defined(BOOST_NO_EXCEPTIONS)
+   return boost::shared_ptr<Object>();
+#endif
+#else
+   return do_get(k, l_max_cache_size);
+#endif
+}
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+template <class Key, class Object>
+boost::shared_ptr<Object const> object_cache<Key, Object>::do_get(const Key& k, size_type l_max_cache_size)
+{
+   typedef typename object_cache<Key, Object>::data object_data;
+   typedef typename map_type::size_type map_size_type;
+   static object_data s_data;
+
+   //
+   // see if the object is already in the cache:
+   //
+   map_iterator mpos = s_data.index.find(k);
+   if(mpos != s_data.index.end())
+   {
+      //
+      // Eureka! 
+      // We have a cached item, bump it up the list and return it:
+      //
+      if(--(s_data.cont.end()) != mpos->second)
+      {
+         // splice out the item we want to move:
+         list_type temp;
+         temp.splice(temp.end(), s_data.cont, mpos->second);
+         // and now place it at the end of the list:
+         s_data.cont.splice(s_data.cont.end(), temp, temp.begin());
+         BOOST_REGEX_ASSERT(*(s_data.cont.back().second) == k);
+         // update index with new position:
+         mpos->second = --(s_data.cont.end());
+         BOOST_REGEX_ASSERT(&(mpos->first) == mpos->second->second);
+         BOOST_REGEX_ASSERT(&(mpos->first) == s_data.cont.back().second);
+      }
+      return s_data.cont.back().first;
+   }
+   //
+   // if we get here then the item is not in the cache,
+   // so create it:
+   //
+   boost::shared_ptr<Object const> result(new Object(k));
+   //
+   // Add it to the list, and index it:
+   //
+   s_data.cont.push_back(value_type(result, static_cast<Key const*>(0)));
+   s_data.index.insert(std::make_pair(k, --(s_data.cont.end())));
+   s_data.cont.back().second = &(s_data.index.find(k)->first);
+   map_size_type s = s_data.index.size();
+   BOOST_REGEX_ASSERT(s_data.index[k]->first.get() == result.get());
+   BOOST_REGEX_ASSERT(&(s_data.index.find(k)->first) == s_data.cont.back().second);
+   BOOST_REGEX_ASSERT(s_data.index.find(k)->first == k);
+   if(s > l_max_cache_size)
+   {
+      //
+      // We have too many items in the list, so we need to start
+      // popping them off the back of the list, but only if they're
+      // being held uniquely by us:
+      //
+      list_iterator pos = s_data.cont.begin();
+      list_iterator last = s_data.cont.end();
+      while((pos != last) && (s > l_max_cache_size))
+      {
+         if(pos->first.unique())
+         {
+            list_iterator condemmed(pos);
+            ++pos;
+            // now remove the items from our containers, 
+            // then order has to be as follows:
+            BOOST_REGEX_ASSERT(s_data.index.find(*(condemmed->second)) != s_data.index.end());
+            s_data.index.erase(*(condemmed->second));
+            s_data.cont.erase(condemmed); 
+            --s;
+         }
+         else
+            ++pos;
+      }
+      BOOST_REGEX_ASSERT(s_data.index[k]->first.get() == result.get());
+      BOOST_REGEX_ASSERT(&(s_data.index.find(k)->first) == s_data.cont.back().second);
+      BOOST_REGEX_ASSERT(s_data.index.find(k)->first == k);
+   }
+   return result;
+}
+
+}
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/pattern_except.hpp

@@ -0,0 +1,128 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         pattern_except.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares pattern-matching exception classes.
+  */
+
+#ifndef BOOST_RE_V4_PAT_EXCEPT_HPP
+#define BOOST_RE_V4_PAT_EXCEPT_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#include <cstddef>
+#include <stdexcept>
+#include <boost/regex/v4/error_type.hpp>
+#include <boost/regex/v4/regex_traits_defaults.hpp>
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4275)
+#if BOOST_MSVC >= 1800
+#pragma warning(disable : 26812)
+#endif
+#endif
+class regex_error : public std::runtime_error
+{
+public:
+   explicit regex_error(const std::string& s, regex_constants::error_type err = regex_constants::error_unknown, std::ptrdiff_t pos = 0)
+      : std::runtime_error(s)
+      , m_error_code(err)
+      , m_position(pos)
+   {
+   }
+   explicit regex_error(regex_constants::error_type err)
+      : std::runtime_error(::boost::BOOST_REGEX_DETAIL_NS::get_default_error_string(err))
+      , m_error_code(err)
+      , m_position(0)
+   {
+   }
+   ~regex_error() BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE {}
+   regex_constants::error_type code()const
+   { return m_error_code; }
+   std::ptrdiff_t position()const
+   { return m_position; }
+   void raise()const 
+   {
+#ifndef BOOST_NO_EXCEPTIONS
+#ifndef BOOST_REGEX_STANDALONE
+      ::boost::throw_exception(*this);
+#else
+      throw* this;
+#endif
+#endif
+   }
+private:
+   regex_constants::error_type m_error_code;
+   std::ptrdiff_t m_position;
+};
+
+typedef regex_error bad_pattern;
+typedef regex_error bad_expression;
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+template <class E>
+inline void raise_runtime_error(const E& ex)
+{
+#ifndef BOOST_REGEX_STANDALONE
+   ::boost::throw_exception(ex);
+#else
+   throw ex;
+#endif
+}
+
+template <class traits>
+void raise_error(const traits& t, regex_constants::error_type code)
+{
+   (void)t;  // warning suppression
+   regex_error e(t.error_string(code), code, 0);
+   ::boost::BOOST_REGEX_DETAIL_NS::raise_runtime_error(e);
+}
+
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/perl_matcher.hpp

@@ -0,0 +1,645 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+#ifndef BOOST_REGEX_MATCHER_HPP
+#define BOOST_REGEX_MATCHER_HPP
+
+#include <boost/regex/v4/iterator_category.hpp>
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#pragma warning(disable : 4251)
+#if BOOST_MSVC < 1700
+#     pragma warning(disable : 4231)
+#endif
+#  if BOOST_MSVC < 1600
+#     pragma warning(disable : 4660)
+#  endif
+#if BOOST_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+//
+// error checking API:
+//
+inline void BOOST_REGEX_CALL verify_options(boost::regex_constants::syntax_option_type, match_flag_type mf)
+{
+   //
+   // can't mix match_extra with POSIX matching rules:
+   //
+   if ((mf & match_extra) && (mf & match_posix))
+   {
+      std::logic_error msg("Usage Error: Can't mix regular expression captures with POSIX matching rules");
+      throw_exception(msg);
+   }
+}
+//
+// function can_start:
+//
+template <class charT>
+inline bool can_start(charT c, const unsigned char* map, unsigned char mask)
+{
+   return ((c < static_cast<charT>(0)) ? true : ((c >= static_cast<charT>(1 << CHAR_BIT)) ? true : map[c] & mask));
+}
+inline bool can_start(char c, const unsigned char* map, unsigned char mask)
+{
+   return map[(unsigned char)c] & mask;
+}
+inline bool can_start(signed char c, const unsigned char* map, unsigned char mask)
+{
+   return map[(unsigned char)c] & mask;
+}
+inline bool can_start(unsigned char c, const unsigned char* map, unsigned char mask)
+{
+   return map[c] & mask;
+}
+inline bool can_start(unsigned short c, const unsigned char* map, unsigned char mask)
+{
+   return ((c >= (1 << CHAR_BIT)) ? true : map[c] & mask);
+}
+#if !defined(__hpux) && !defined(__WINSCW__)// WCHAR_MIN not usable in pp-directives.
+#if defined(WCHAR_MIN) && (WCHAR_MIN == 0) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+inline bool can_start(wchar_t c, const unsigned char* map, unsigned char mask)
+{
+   return ((c >= static_cast<wchar_t>(1u << CHAR_BIT)) ? true : map[c] & mask);
+}
+#endif
+#endif
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+inline bool can_start(unsigned int c, const unsigned char* map, unsigned char mask)
+{
+   return (((c >= static_cast<unsigned int>(1u << CHAR_BIT)) ? true : map[c] & mask));
+}
+#endif
+
+
+//
+// Unfortunately Rogue Waves standard library appears to have a bug
+// in std::basic_string::compare that results in erroneous answers
+// in some cases (tested with Borland C++ 5.1, Rogue Wave lib version
+// 0x020101) the test case was:
+// {39135,0} < {0xff,0}
+// which succeeds when it should not.
+//
+#ifndef _RWSTD_VER
+template <class C, class T, class A>
+inline int string_compare(const std::basic_string<C,T,A>& s, const C* p)
+{ 
+   if(0 == *p)
+   {
+      if(s.empty() || ((s.size() == 1) && (s[0] == 0)))
+         return 0;
+   }
+   return s.compare(p); 
+}
+#else
+template <class C, class T, class A>
+inline int string_compare(const std::basic_string<C,T,A>& s, const C* p)
+{ 
+   if(0 == *p)
+   {
+      if(s.empty() || ((s.size() == 1) && (s[0] == 0)))
+         return 0;
+   }
+   return s.compare(p); 
+}
+inline int string_compare(const std::string& s, const char* p)
+{ return std::strcmp(s.c_str(), p); }
+# ifndef BOOST_NO_WREGEX
+inline int string_compare(const std::wstring& s, const wchar_t* p)
+{ return std::wcscmp(s.c_str(), p); }
+#endif
+#endif
+template <class Seq, class C>
+inline int string_compare(const Seq& s, const C* p)
+{
+   std::size_t i = 0;
+   while((i < s.size()) && (p[i] == s[i]))
+   {
+      ++i;
+   }
+   return (i == s.size()) ? -(int)p[i] : (int)s[i] - (int)p[i];
+}
+# define STR_COMP(s,p) string_compare(s,p)
+
+template<class charT>
+inline const charT* re_skip_past_null(const charT* p)
+{
+  while (*p != static_cast<charT>(0)) ++p;
+  return ++p;
+}
+
+template <class iterator, class charT, class traits_type, class char_classT>
+iterator BOOST_REGEX_CALL re_is_set_member(iterator next, 
+                          iterator last, 
+                          const re_set_long<char_classT>* set_, 
+                          const regex_data<charT, traits_type>& e, bool icase)
+{   
+   const charT* p = reinterpret_cast<const charT*>(set_+1);
+   iterator ptr;
+   unsigned int i;
+   //bool icase = e.m_flags & regex_constants::icase;
+
+   if(next == last) return next;
+
+   typedef typename traits_type::string_type traits_string_type;
+   const ::boost::regex_traits_wrapper<traits_type>& traits_inst = *(e.m_ptraits);
+   
+   // dwa 9/13/00 suppress incorrect MSVC warning - it claims this is never
+   // referenced
+   (void)traits_inst;
+
+   // try and match a single character, could be a multi-character
+   // collating element...
+   for(i = 0; i < set_->csingles; ++i)
+   {
+      ptr = next;
+      if(*p == static_cast<charT>(0))
+      {
+         // treat null string as special case:
+         if(traits_inst.translate(*ptr, icase))
+         {
+            ++p;
+            continue;
+         }
+         return set_->isnot ? next : (ptr == next) ? ++next : ptr;
+      }
+      else
+      {
+         while(*p && (ptr != last))
+         {
+            if(traits_inst.translate(*ptr, icase) != *p)
+               break;
+            ++p;
+            ++ptr;
+         }
+
+         if(*p == static_cast<charT>(0)) // if null we've matched
+            return set_->isnot ? next : (ptr == next) ? ++next : ptr;
+
+         p = re_skip_past_null(p);     // skip null
+      }
+   }
+
+   charT col = traits_inst.translate(*next, icase);
+
+
+   if(set_->cranges || set_->cequivalents)
+   {
+      traits_string_type s1;
+      //
+      // try and match a range, NB only a single character can match
+      if(set_->cranges)
+      {
+         if((e.m_flags & regex_constants::collate) == 0)
+            s1.assign(1, col);
+         else
+         {
+            charT a[2] = { col, charT(0), };
+            s1 = traits_inst.transform(a, a + 1);
+         }
+         for(i = 0; i < set_->cranges; ++i)
+         {
+            if(STR_COMP(s1, p) >= 0)
+            {
+               do{ ++p; }while(*p);
+               ++p;
+               if(STR_COMP(s1, p) <= 0)
+                  return set_->isnot ? next : ++next;
+            }
+            else
+            {
+               // skip first string
+               do{ ++p; }while(*p);
+               ++p;
+            }
+            // skip second string
+            do{ ++p; }while(*p);
+            ++p;
+         }
+      }
+      //
+      // try and match an equivalence class, NB only a single character can match
+      if(set_->cequivalents)
+      {
+         charT a[2] = { col, charT(0), };
+         s1 = traits_inst.transform_primary(a, a +1);
+         for(i = 0; i < set_->cequivalents; ++i)
+         {
+            if(STR_COMP(s1, p) == 0)
+               return set_->isnot ? next : ++next;
+            // skip string
+            do{ ++p; }while(*p);
+            ++p;
+         }
+      }
+   }
+   if(traits_inst.isctype(col, set_->cclasses) == true)
+      return set_->isnot ? next : ++next;
+   if((set_->cnclasses != 0) && (traits_inst.isctype(col, set_->cnclasses) == false))
+      return set_->isnot ? next : ++next;
+   return set_->isnot ? ++next : next;
+}
+
+template <class BidiIterator>
+class repeater_count
+{
+   repeater_count** stack;
+   repeater_count* next;
+   int state_id;
+   std::size_t count;        // the number of iterations so far
+   BidiIterator start_pos;   // where the last repeat started
+
+   repeater_count* unwind_until(int n, repeater_count* p, int current_recursion_id)
+   { 
+      while(p && (p->state_id != n))
+      {
+         if(-2 - current_recursion_id == p->state_id)
+            return 0;
+         p = p->next;
+         if(p && (p->state_id < 0))
+         {
+            p = unwind_until(p->state_id, p, current_recursion_id);
+            if(!p)
+               return p;
+            p = p->next;
+         }
+      }
+      return p;
+   }
+public:
+   repeater_count(repeater_count** s) : stack(s), next(0), state_id(-1), count(0), start_pos() {}
+   
+   repeater_count(int i, repeater_count** s, BidiIterator start, int current_recursion_id)
+      : start_pos(start)
+   {
+      state_id = i;
+      stack = s;
+      next = *stack;
+      *stack = this;
+      if((state_id > next->state_id) && (next->state_id >= 0))
+         count = 0;
+      else
+      {
+         repeater_count* p = next;
+         p = unwind_until(state_id, p, current_recursion_id);
+         if(p)
+         {
+            count = p->count;
+            start_pos = p->start_pos;
+         }
+         else
+            count = 0;
+      }
+   }
+   ~repeater_count()
+   {
+      if(next)
+         *stack = next;
+   }
+   std::size_t get_count() { return count; }
+   int get_id() { return state_id; }
+   std::size_t operator++() { return ++count; }
+   bool check_null_repeat(const BidiIterator& pos, std::size_t max)
+   {
+      // this is called when we are about to start a new repeat,
+      // if the last one was NULL move our count to max,
+      // otherwise save the current position.
+      bool result = (count == 0) ? false : (pos == start_pos);
+      if(result)
+         count = max;
+      else
+         start_pos = pos;
+      return result;
+   }
+};
+
+struct saved_state;
+
+enum saved_state_type
+{
+   saved_type_end = 0,
+   saved_type_paren = 1,
+   saved_type_recurse = 2,
+   saved_type_assertion = 3,
+   saved_state_alt = 4,
+   saved_state_repeater_count = 5,
+   saved_state_extra_block = 6,
+   saved_state_greedy_single_repeat = 7,
+   saved_state_rep_slow_dot = 8,
+   saved_state_rep_fast_dot = 9,
+   saved_state_rep_char = 10,
+   saved_state_rep_short_set = 11,
+   saved_state_rep_long_set = 12,
+   saved_state_non_greedy_long_repeat = 13, 
+   saved_state_count = 14
+};
+
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#if BOOST_MSVC >= 1800
+#pragma warning(disable:26495)
+#endif
+#endif
+template <class Results>
+struct recursion_info
+{
+   typedef typename Results::value_type value_type;
+   typedef typename value_type::iterator iterator;
+   int idx;
+   const re_syntax_base* preturn_address;
+   Results results;
+   repeater_count<iterator>* repeater_stack;
+   iterator location_of_start;
+};
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+
+template <class BidiIterator, class Allocator, class traits>
+class perl_matcher
+{
+public:
+   typedef typename traits::char_type char_type;
+   typedef perl_matcher<BidiIterator, Allocator, traits> self_type;
+   typedef bool (self_type::*matcher_proc_type)();
+   typedef std::size_t traits_size_type;
+   typedef typename is_byte<char_type>::width_type width_type;
+   typedef typename regex_iterator_traits<BidiIterator>::difference_type difference_type;
+   typedef match_results<BidiIterator, Allocator> results_type;
+
+   perl_matcher(BidiIterator first, BidiIterator end, 
+      match_results<BidiIterator, Allocator>& what, 
+      const basic_regex<char_type, traits>& e,
+      match_flag_type f,
+      BidiIterator l_base)
+      :  m_result(what), base(first), last(end), 
+         position(first), backstop(l_base), re(e), traits_inst(e.get_traits()), 
+         m_independent(false), next_count(&rep_obj), rep_obj(&next_count)
+#ifdef BOOST_REGEX_NON_RECURSIVE
+      , m_recursions(0)
+#endif
+   {
+      construct_init(e, f);
+   }
+
+   bool match();
+   bool find();
+
+   void setf(match_flag_type f)
+   { m_match_flags |= f; }
+   void unsetf(match_flag_type f)
+   { m_match_flags &= ~f; }
+
+private:
+   void construct_init(const basic_regex<char_type, traits>& e, match_flag_type f);
+
+   bool find_imp();
+   bool match_imp();
+#ifdef BOOST_REGEX_HAS_MS_STACK_GUARD
+   typedef bool (perl_matcher::*protected_proc_type)();
+   bool protected_call(protected_proc_type);
+#endif
+   void estimate_max_state_count(std::random_access_iterator_tag*);
+   void estimate_max_state_count(void*);
+   bool match_prefix();
+   bool match_all_states();
+
+   // match procs, stored in s_match_vtable:
+   bool match_startmark();
+   bool match_endmark();
+   bool match_literal();
+   bool match_start_line();
+   bool match_end_line();
+   bool match_wild();
+   bool match_match();
+   bool match_word_boundary();
+   bool match_within_word();
+   bool match_word_start();
+   bool match_word_end();
+   bool match_buffer_start();
+   bool match_buffer_end();
+   bool match_backref();
+   bool match_long_set();
+   bool match_set();
+   bool match_jump();
+   bool match_alt();
+   bool match_rep();
+   bool match_combining();
+   bool match_soft_buffer_end();
+   bool match_restart_continue();
+   bool match_long_set_repeat();
+   bool match_set_repeat();
+   bool match_char_repeat();
+   bool match_dot_repeat_fast();
+   bool match_dot_repeat_slow();
+   bool match_dot_repeat_dispatch()
+   {
+      return ::boost::is_random_access_iterator<BidiIterator>::value ? match_dot_repeat_fast() : match_dot_repeat_slow();
+   }
+   bool match_backstep();
+   bool match_assert_backref();
+   bool match_toggle_case();
+#ifdef BOOST_REGEX_RECURSIVE
+   bool backtrack_till_match(std::size_t count);
+#endif
+   bool match_recursion();
+   bool match_fail();
+   bool match_accept();
+   bool match_commit();
+   bool match_then();
+   bool skip_until_paren(int index, bool match = true);
+
+   // find procs stored in s_find_vtable:
+   bool find_restart_any();
+   bool find_restart_word();
+   bool find_restart_line();
+   bool find_restart_buf();
+   bool find_restart_lit();
+
+private:
+   // final result structure to be filled in:
+   match_results<BidiIterator, Allocator>& m_result;
+   // temporary result for POSIX matches:
+   scoped_ptr<match_results<BidiIterator, Allocator> > m_temp_match;
+   // pointer to actual result structure to fill in:
+   match_results<BidiIterator, Allocator>* m_presult;
+   // start of sequence being searched:
+   BidiIterator base;
+   // end of sequence being searched:
+   BidiIterator last; 
+   // current character being examined:
+   BidiIterator position;
+   // where to restart next search after failed match attempt:
+   BidiIterator restart;
+   // where the current search started from, acts as base for $` during grep:
+   BidiIterator search_base;
+   // how far we can go back when matching lookbehind:
+   BidiIterator backstop;
+   // the expression being examined:
+   const basic_regex<char_type, traits>& re;
+   // the expression's traits class:
+   const ::boost::regex_traits_wrapper<traits>& traits_inst;
+   // the next state in the machine being matched:
+   const re_syntax_base* pstate;
+   // matching flags in use:
+   match_flag_type m_match_flags;
+   // how many states we have examined so far:
+   std::ptrdiff_t state_count;
+   // max number of states to examine before giving up:
+   std::ptrdiff_t max_state_count;
+   // whether we should ignore case or not:
+   bool icase;
+   // set to true when (position == last), indicates that we may have a partial match:
+   bool m_has_partial_match;
+   // set to true whenever we get a match:
+   bool m_has_found_match;
+   // set to true whenever we're inside an independent sub-expression:
+   bool m_independent;
+   // the current repeat being examined:
+   repeater_count<BidiIterator>* next_count;
+   // the first repeat being examined (top of linked list):
+   repeater_count<BidiIterator> rep_obj;
+   // the mask to pass when matching word boundaries:
+   typename traits::char_class_type m_word_mask;
+   // the bitmask to use when determining whether a match_any matches a newline or not:
+   unsigned char match_any_mask;
+   // recursion information:
+   std::vector<recursion_info<results_type> > recursion_stack;
+#ifdef BOOST_REGEX_RECURSIVE
+   // Set to false by a (*COMMIT):
+   bool m_can_backtrack;
+   bool m_have_accept;
+   bool m_have_then;
+#endif
+#ifdef BOOST_REGEX_NON_RECURSIVE
+   //
+   // additional members for non-recursive version:
+   //
+   typedef bool (self_type::*unwind_proc_type)(bool);
+
+   void extend_stack();
+   bool unwind(bool);
+   bool unwind_end(bool);
+   bool unwind_paren(bool);
+   bool unwind_recursion_stopper(bool);
+   bool unwind_assertion(bool);
+   bool unwind_alt(bool);
+   bool unwind_repeater_counter(bool);
+   bool unwind_extra_block(bool);
+   bool unwind_greedy_single_repeat(bool);
+   bool unwind_slow_dot_repeat(bool);
+   bool unwind_fast_dot_repeat(bool);
+   bool unwind_char_repeat(bool);
+   bool unwind_short_set_repeat(bool);
+   bool unwind_long_set_repeat(bool);
+   bool unwind_non_greedy_repeat(bool);
+   bool unwind_recursion(bool);
+   bool unwind_recursion_pop(bool);
+   bool unwind_commit(bool);
+   bool unwind_then(bool);
+   bool unwind_case(bool);
+   void destroy_single_repeat();
+   void push_matched_paren(int index, const sub_match<BidiIterator>& sub);
+   void push_recursion_stopper();
+   void push_assertion(const re_syntax_base* ps, bool positive);
+   void push_alt(const re_syntax_base* ps);
+   void push_repeater_count(int i, repeater_count<BidiIterator>** s);
+   void push_single_repeat(std::size_t c, const re_repeat* r, BidiIterator last_position, int state_id);
+   void push_non_greedy_repeat(const re_syntax_base* ps);
+   void push_recursion(int idx, const re_syntax_base* p, results_type* presults, results_type* presults2);
+   void push_recursion_pop();
+   void push_case_change(bool);
+
+   // pointer to base of stack:
+   saved_state* m_stack_base;
+   // pointer to current stack position:
+   saved_state* m_backup_state;
+   // how many memory blocks have we used up?:
+   unsigned used_block_count;
+   // determines what value to return when unwinding from recursion,
+   // allows for mixed recursive/non-recursive algorithm:
+   bool m_recursive_result;
+   // We have unwound to a lookahead/lookbehind, used by COMMIT/PRUNE/SKIP:
+   bool m_unwound_lookahead;
+   // We have unwound to an alternative, used by THEN:
+   bool m_unwound_alt;
+   // We are unwinding a commit - used by independent subs to determine whether to stop there or carry on unwinding:
+   //bool m_unwind_commit;
+   // Recursion limit:
+   unsigned m_recursions;
+#endif
+
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#if BOOST_MSVC >= 1800
+#pragma warning(disable:26495)
+#endif
+#endif
+   // these operations aren't allowed, so are declared private,
+   // bodies are provided to keep explicit-instantiation requests happy:
+   perl_matcher& operator=(const perl_matcher&)
+   {
+      return *this;
+   }
+   perl_matcher(const perl_matcher& that)
+      : m_result(that.m_result), re(that.re), traits_inst(that.traits_inst), rep_obj(0) {}
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+//
+// include the implementation of perl_matcher:
+//
+#ifdef BOOST_REGEX_RECURSIVE
+#include <boost/regex/v4/perl_matcher_recursive.hpp>
+#else
+#include <boost/regex/v4/perl_matcher_non_recursive.hpp>
+#endif
+// this one has to be last:
+#include <boost/regex/v4/perl_matcher_common.hpp>
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/primary_transform.hpp

@@ -0,0 +1,146 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE:        primary_transform.hpp
+  *   VERSION:     see <boost/version.hpp>
+  *   DESCRIPTION: Heuristically determines the sort string format in use
+  *                by the current locale.
+  */
+
+#ifndef BOOST_REGEX_PRIMARY_TRANSFORM
+#define BOOST_REGEX_PRIMARY_TRANSFORM
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+   namespace BOOST_REGEX_DETAIL_NS{
+
+
+enum{
+   sort_C,
+   sort_fixed,
+   sort_delim,
+   sort_unknown
+};
+
+template <class S, class charT>
+unsigned count_chars(const S& s, charT c)
+{
+   //
+   // Count how many occurrences of character c occur
+   // in string s: if c is a delimeter between collation
+   // fields, then this should be the same value for all
+   // sort keys:
+   //
+   unsigned int count = 0;
+   for(unsigned pos = 0; pos < s.size(); ++pos)
+   {
+      if(s[pos] == c) ++count;
+   }
+   return count;
+}
+
+
+template <class traits, class charT>
+unsigned find_sort_syntax(const traits* pt, charT* delim)
+{
+   //
+   // compare 'a' with 'A' to see how similar they are,
+   // should really use a-accute but we can't portably do that,
+   //
+   typedef typename traits::string_type string_type;
+   typedef typename traits::char_type char_type;
+
+   // Suppress incorrect warning for MSVC
+   (void)pt;
+
+   char_type a[2] = {'a', '\0', };
+   string_type sa(pt->transform(a, a+1));
+   if(sa == a)
+   {
+      *delim = 0;
+      return sort_C;
+   }
+   char_type A[2] = { 'A', '\0', };
+   string_type sA(pt->transform(A, A+1));
+   char_type c[2] = { ';', '\0', };
+   string_type sc(pt->transform(c, c+1));
+
+   int pos = 0;
+   while((pos <= static_cast<int>(sa.size())) && (pos <= static_cast<int>(sA.size())) && (sa[pos] == sA[pos])) ++pos;
+   --pos;
+   if(pos < 0)
+   {
+      *delim = 0;
+      return sort_unknown;
+   }
+   //
+   // at this point sa[pos] is either the end of a fixed width field
+   // or the character that acts as a delimiter:
+   //
+   charT maybe_delim = sa[pos];
+   if((pos != 0) && (count_chars(sa, maybe_delim) == count_chars(sA, maybe_delim)) && (count_chars(sa, maybe_delim) == count_chars(sc, maybe_delim)))
+   {
+      *delim = maybe_delim;
+      return sort_delim;
+   }
+   //
+   // OK doen't look like a delimiter, try for fixed width field:
+   //
+   if((sa.size() == sA.size()) && (sa.size() == sc.size()))
+   {
+      // note assumes that the fixed width field is less than
+      // (numeric_limits<charT>::max)(), should be true for all types
+      // I can't imagine 127 character fields...
+      *delim = static_cast<charT>(++pos);
+      return sort_fixed;
+   }
+   //
+   // don't know what it is:
+   //
+   *delim = 0;
+   return sort_unknown;
+}
+
+
+   } // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/protected_call.hpp

@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         basic_regex_creator.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class basic_regex_creator which fills in
+  *                the data members of a regex_data object.
+  */
+
+#ifndef BOOST_REGEX_V4_PROTECTED_CALL_HPP
+#define BOOST_REGEX_V4_PROTECTED_CALL_HPP
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+class BOOST_REGEX_DECL abstract_protected_call
+{
+public:
+   bool BOOST_REGEX_CALL execute()const;
+   // this stops gcc-4 from complaining:
+   virtual ~abstract_protected_call(){}
+private:
+   virtual bool call()const = 0;
+};
+
+template <class T>
+class concrete_protected_call
+   : public abstract_protected_call
+{
+public:
+   typedef bool (T::*proc_type)();
+   concrete_protected_call(T* o, proc_type p)
+      : obj(o), proc(p) {}
+private:
+   bool call()const BOOST_OVERRIDE;
+   T* obj;
+   proc_type proc;
+};
+
+template <class T>
+bool concrete_protected_call<T>::call()const
+{
+   return (obj->*proc)();
+}
+
+}
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/regbase.hpp

@@ -0,0 +1,180 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regbase.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares class regbase.
+  */
+
+#ifndef BOOST_REGEX_V4_REGBASE_HPP
+#define BOOST_REGEX_V4_REGBASE_HPP
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+//
+// class regbase
+// handles error codes and flags
+//
+class BOOST_REGEX_DECL regbase
+{
+public:
+   enum flag_type_
+   {
+      //
+      // Divide the flags up into logical groups:
+      // bits 0-7 indicate main synatx type.
+      // bits 8-15 indicate syntax subtype.
+      // bits 16-31 indicate options that are common to all
+      // regex syntaxes.
+      // In all cases the default is 0.
+      //
+      // Main synatx group:
+      //
+      perl_syntax_group = 0,                      // default
+      basic_syntax_group = 1,                     // POSIX basic
+      literal = 2,                                // all characters are literals
+      main_option_type = literal | basic_syntax_group | perl_syntax_group, // everything!
+      //
+      // options specific to perl group:
+      //
+      no_bk_refs = 1 << 8,                        // \d not allowed
+      no_perl_ex = 1 << 9,                        // disable perl extensions
+      no_mod_m = 1 << 10,                         // disable Perl m modifier
+      mod_x = 1 << 11,                            // Perl x modifier
+      mod_s = 1 << 12,                            // force s modifier on (overrides match_not_dot_newline)
+      no_mod_s = 1 << 13,                         // force s modifier off (overrides match_not_dot_newline)
+
+      //
+      // options specific to basic group:
+      //
+      no_char_classes = 1 << 8,                   // [[:CLASS:]] not allowed
+      no_intervals = 1 << 9,                      // {x,y} not allowed
+      bk_plus_qm = 1 << 10,                       // uses \+ and \?
+      bk_vbar = 1 << 11,                          // use \| for alternatives
+      emacs_ex = 1 << 12,                         // enables emacs extensions
+
+      //
+      // options common to all groups:
+      //
+      no_escape_in_lists = 1 << 16,                     // '\' not special inside [...]
+      newline_alt = 1 << 17,                            // \n is the same as |
+      no_except = 1 << 18,                              // no exception on error
+      failbit = 1 << 19,                                // error flag
+      icase = 1 << 20,                                  // characters are matched regardless of case
+      nocollate = 0,                                    // don't use locale specific collation (deprecated)
+      collate = 1 << 21,                                // use locale specific collation
+      nosubs = 1 << 22,                                 // don't mark sub-expressions
+      save_subexpression_location = 1 << 23,            // save subexpression locations
+      no_empty_expressions = 1 << 24,                   // no empty expressions allowed
+      optimize = 0,                                     // not really supported
+      
+
+
+      basic = basic_syntax_group | collate | no_escape_in_lists,
+      extended = no_bk_refs | collate | no_perl_ex | no_escape_in_lists,
+      normal = 0,
+      emacs = basic_syntax_group | collate | emacs_ex | bk_vbar,
+      awk = no_bk_refs | collate | no_perl_ex,
+      grep = basic | newline_alt,
+      egrep = extended | newline_alt,
+      sed = basic,
+      perl = normal,
+      ECMAScript = normal,
+      JavaScript = normal,
+      JScript = normal
+   };
+   typedef unsigned int flag_type;
+
+   enum restart_info
+   {
+      restart_any = 0,
+      restart_word = 1,
+      restart_line = 2,
+      restart_buf = 3,
+      restart_continue = 4,
+      restart_lit = 5,
+      restart_fixed_lit = 6, 
+      restart_count = 7
+   };
+};
+
+//
+// provide std lib proposal compatible constants:
+//
+namespace regex_constants{
+
+   enum flag_type_
+   {
+
+      no_except = ::boost::regbase::no_except,
+      failbit = ::boost::regbase::failbit,
+      literal = ::boost::regbase::literal,
+      icase = ::boost::regbase::icase,
+      nocollate = ::boost::regbase::nocollate,
+      collate = ::boost::regbase::collate,
+      nosubs = ::boost::regbase::nosubs,
+      optimize = ::boost::regbase::optimize,
+      bk_plus_qm = ::boost::regbase::bk_plus_qm,
+      bk_vbar = ::boost::regbase::bk_vbar,
+      no_intervals = ::boost::regbase::no_intervals,
+      no_char_classes = ::boost::regbase::no_char_classes,
+      no_escape_in_lists = ::boost::regbase::no_escape_in_lists,
+      no_mod_m = ::boost::regbase::no_mod_m,
+      mod_x = ::boost::regbase::mod_x,
+      mod_s = ::boost::regbase::mod_s,
+      no_mod_s = ::boost::regbase::no_mod_s,
+      save_subexpression_location = ::boost::regbase::save_subexpression_location,
+      no_empty_expressions = ::boost::regbase::no_empty_expressions,
+
+      basic = ::boost::regbase::basic,
+      extended = ::boost::regbase::extended,
+      normal = ::boost::regbase::normal,
+      emacs = ::boost::regbase::emacs,
+      awk = ::boost::regbase::awk,
+      grep = ::boost::regbase::grep,
+      egrep = ::boost::regbase::egrep,
+      sed = basic,
+      perl = normal,
+      ECMAScript = normal,
+      JavaScript = normal,
+      JScript = normal
+   };
+   typedef ::boost::regbase::flag_type syntax_option_type;
+
+} // namespace regex_constants
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v4/regex.hpp

@@ -0,0 +1,166 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares boost::basic_regex<> and associated
+  *                functions and classes. This header is the main
+  *                entry point for the template regex code.
+  */
+
+#ifndef BOOST_RE_REGEX_HPP_INCLUDED
+#define BOOST_RE_REGEX_HPP_INCLUDED
+
+#ifdef __cplusplus
+
+// what follows is all C++ don't include in C builds!!
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+#ifndef BOOST_REGEX_WORKAROUND_HPP
+#include <boost/regex/v4/regex_workaround.hpp>
+#endif
+
+#ifndef BOOST_REGEX_FWD_HPP
+#include <boost/regex_fwd.hpp>
+#endif
+#ifndef BOOST_REGEX_TRAITS_HPP
+#include <boost/regex/regex_traits.hpp>
+#endif
+#ifndef BOOST_REGEX_RAW_BUFFER_HPP
+#include <boost/regex/v4/error_type.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_MATCH_FLAGS
+#include <boost/regex/v4/match_flags.hpp>
+#endif
+#ifndef BOOST_REGEX_RAW_BUFFER_HPP
+#include <boost/regex/v4/regex_raw_buffer.hpp>
+#endif
+#ifndef BOOST_RE_PAT_EXCEPT_HPP
+#include <boost/regex/pattern_except.hpp>
+#endif
+
+#ifndef BOOST_REGEX_V4_CHAR_REGEX_TRAITS_HPP
+#include <boost/regex/v4/char_regex_traits.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_STATES_HPP
+#include <boost/regex/v4/states.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_REGBASE_HPP
+#include <boost/regex/v4/regbase.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
+#include <boost/regex/v4/iterator_traits.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_BASIC_REGEX_HPP
+#include <boost/regex/v4/basic_regex.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_BASIC_REGEX_CREATOR_HPP
+#include <boost/regex/v4/basic_regex_creator.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_BASIC_REGEX_PARSER_HPP
+#include <boost/regex/v4/basic_regex_parser.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_SUB_MATCH_HPP
+#include <boost/regex/v4/sub_match.hpp>
+#endif
+#ifndef BOOST_REGEX_FORMAT_HPP
+#include <boost/regex/v4/regex_format.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_MATCH_RESULTS_HPP
+#include <boost/regex/v4/match_results.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_PROTECTED_CALL_HPP
+#include <boost/regex/v4/protected_call.hpp>
+#endif
+#ifndef BOOST_REGEX_MATCHER_HPP
+#include <boost/regex/v4/perl_matcher.hpp>
+#endif
+
+
+namespace boost{
+#ifdef BOOST_REGEX_NO_FWD
+typedef basic_regex<char, regex_traits<char> > regex;
+#ifndef BOOST_NO_WREGEX
+typedef basic_regex<wchar_t, regex_traits<wchar_t> > wregex;
+#endif
+#endif
+
+typedef match_results<const char*> cmatch;
+typedef match_results<std::string::const_iterator> smatch;
+#ifndef BOOST_NO_WREGEX
+typedef match_results<const wchar_t*> wcmatch;
+typedef match_results<std::wstring::const_iterator> wsmatch;
+#endif
+
+} // namespace boost
+#ifndef BOOST_REGEX_MATCH_HPP
+#include <boost/regex/v4/regex_match.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_REGEX_SEARCH_HPP
+#include <boost/regex/v4/regex_search.hpp>
+#endif
+#ifndef BOOST_REGEX_ITERATOR_HPP
+#include <boost/regex/v4/regex_iterator.hpp>
+#endif
+#ifndef BOOST_REGEX_TOKEN_ITERATOR_HPP
+#include <boost/regex/v4/regex_token_iterator.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_REGEX_GREP_HPP
+#include <boost/regex/v4/regex_grep.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_REGEX_REPLACE_HPP
+#include <boost/regex/v4/regex_replace.hpp>
+#endif
+#ifndef BOOST_REGEX_V4_REGEX_MERGE_HPP
+#include <boost/regex/v4/regex_merge.hpp>
+#endif
+#ifndef BOOST_REGEX_SPLIT_HPP
+#include <boost/regex/v4/regex_split.hpp>
+#endif
+
+#endif  // __cplusplus
+
+#endif  // include
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_fwd.hpp

@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_fwd.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Forward declares boost::basic_regex<> and
+  *                associated typedefs.
+  */
+
+#ifndef BOOST_REGEX_FWD_HPP_INCLUDED
+#define BOOST_REGEX_FWD_HPP_INCLUDED
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+//
+// define BOOST_REGEX_NO_FWD if this
+// header doesn't work!
+//
+#ifdef BOOST_REGEX_NO_FWD
+#  ifndef BOOST_RE_REGEX_HPP
+#     include <boost/regex.hpp>
+#  endif
+#else
+
+namespace boost{
+
+template <class charT>
+class cpp_regex_traits;
+template <class charT>
+struct c_regex_traits;
+template <class charT>
+class w32_regex_traits;
+
+#ifdef BOOST_REGEX_USE_WIN32_LOCALE
+template <class charT, class implementationT = w32_regex_traits<charT> >
+struct regex_traits;
+#elif defined(BOOST_REGEX_USE_CPP_LOCALE)
+template <class charT, class implementationT = cpp_regex_traits<charT> >
+struct regex_traits;
+#else
+template <class charT, class implementationT = c_regex_traits<charT> >
+struct regex_traits;
+#endif
+
+template <class charT, class traits = regex_traits<charT> >
+class basic_regex;
+
+typedef basic_regex<char, regex_traits<char> > regex;
+#ifndef BOOST_NO_WREGEX
+typedef basic_regex<wchar_t, regex_traits<wchar_t> > wregex;
+#endif
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_NO_FWD
+
+#endif
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_grep.hpp

@@ -0,0 +1,155 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_grep.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_grep implementation.
+  */
+
+#ifndef BOOST_REGEX_V4_REGEX_GREP_HPP
+#define BOOST_REGEX_V4_REGEX_GREP_HPP
+
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+//
+// regex_grep:
+// find all non-overlapping matches within the sequence first last:
+//
+template <class Predicate, class BidiIterator, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, 
+                               BidiIterator first, 
+                               BidiIterator last, 
+                               const basic_regex<charT, traits>& e, 
+                               match_flag_type flags = match_default)
+{
+   if(e.flags() & regex_constants::failbit)
+      return false;
+
+   typedef typename match_results<BidiIterator>::allocator_type match_allocator_type;
+
+   match_results<BidiIterator> m;
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, match_allocator_type, traits> matcher(first, last, m, e, flags, first);
+   unsigned int count = 0;
+   while(matcher.find())
+   {
+      ++count;
+      if(0 == foo(m))
+         return count; // caller doesn't want to go on
+      if(m[0].second == last)
+         return count; // we've reached the end, don't try and find an extra null match.
+      if(m.length() == 0)
+      {
+         if(m[0].second == last)
+            return count;
+         // we found a NULL-match, now try to find
+         // a non-NULL one at the same position:
+         match_results<BidiIterator, match_allocator_type> m2(m);
+         matcher.setf(match_not_null | match_continuous);
+         if(matcher.find())
+         {
+            ++count;
+            if(0 == foo(m))
+               return count;
+         }
+         else
+         {
+            // reset match back to where it was:
+            m = m2;
+         }
+         matcher.unsetf((match_not_null | match_continuous) & ~flags);
+      }
+   }
+   return count;
+}
+
+//
+// regex_grep convenience interfaces:
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+//
+// this isn't really a partial specialisation, but template function
+// overloading - if the compiler doesn't support partial specialisation
+// then it really won't support this either:
+template <class Predicate, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, const charT* str, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_grep(foo, str, str + traits::length(str), e, flags);
+}
+
+template <class Predicate, class ST, class SA, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, const std::basic_string<charT, ST, SA>& s, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+#else  // partial specialisation
+inline unsigned int regex_grep(bool (*foo)(const cmatch&), const char* str, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_grep(foo, str, str + regex::traits_type::length(str), e, flags);
+}
+#ifndef BOOST_NO_WREGEX
+inline unsigned int regex_grep(bool (*foo)(const wcmatch&), const wchar_t* str, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_grep(foo, str, str + wregex::traits_type::length(str), e, flags);
+}
+#endif
+inline unsigned int regex_grep(bool (*foo)(const match_results<std::string::const_iterator>&), const std::string& s,
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+#if !defined(BOOST_NO_WREGEX)
+inline unsigned int regex_grep(bool (*foo)(const match_results<std::basic_string<wchar_t>::const_iterator>&), 
+                     const std::basic_string<wchar_t>& s, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+#endif
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V4_REGEX_GREP_HPP
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_iterator.hpp

@@ -0,0 +1,195 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_iterator implementation.
+  */
+
+#ifndef BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+#define BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+
+#include <boost/shared_ptr.hpp>
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+template <class BidirectionalIterator, 
+          class charT,
+          class traits>
+class regex_iterator_implementation 
+{
+   typedef basic_regex<charT, traits> regex_type;
+
+   match_results<BidirectionalIterator> what;  // current match
+   BidirectionalIterator                base;  // start of sequence
+   BidirectionalIterator                end;   // end of sequence
+   const regex_type                     re;   // the expression
+   match_flag_type                      flags; // flags for matching
+
+public:
+   regex_iterator_implementation(const regex_type* p, BidirectionalIterator last, match_flag_type f)
+      : base(), end(last), re(*p), flags(f){}
+   regex_iterator_implementation(const regex_iterator_implementation& other)
+      :what(other.what), base(other.base), end(other.end), re(other.re), flags(other.flags){}
+   bool init(BidirectionalIterator first)
+   {
+      base = first;
+      return regex_search(first, end, what, re, flags);
+   }
+   bool compare(const regex_iterator_implementation& that)
+   {
+      if(this == &that) return true;
+      return (&re.get_data() == &that.re.get_data()) && (end == that.end) && (flags == that.flags) && (what[0].first == that.what[0].first) && (what[0].second == that.what[0].second);
+   }
+   const match_results<BidirectionalIterator>& get()
+   { return what; }
+   bool next()
+   {
+      //if(what.prefix().first != what[0].second)
+      //   flags |= match_prev_avail;
+      BidirectionalIterator next_start = what[0].second;
+      match_flag_type f(flags);
+      if(!what.length() || (f & regex_constants::match_posix))
+         f |= regex_constants::match_not_initial_null;
+      //if(base != next_start)
+      //   f |= regex_constants::match_not_bob;
+      bool result = regex_search(next_start, end, what, re, f, base);
+      if(result)
+         what.set_base(base);
+      return result;
+   }
+private:
+   regex_iterator_implementation& operator=(const regex_iterator_implementation&);
+};
+
+template <class BidirectionalIterator, 
+          class charT = BOOST_DEDUCED_TYPENAME BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidirectionalIterator>::value_type,
+          class traits = regex_traits<charT> >
+class regex_iterator 
+{
+private:
+   typedef regex_iterator_implementation<BidirectionalIterator, charT, traits> impl;
+   typedef shared_ptr<impl> pimpl;
+public:
+   typedef          basic_regex<charT, traits>                   regex_type;
+   typedef          match_results<BidirectionalIterator>                    value_type;
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidirectionalIterator>::difference_type 
+                                                                            difference_type;
+   typedef          const value_type*                                       pointer;
+   typedef          const value_type&                                       reference; 
+   typedef          std::forward_iterator_tag                               iterator_category;
+   
+   regex_iterator(){}
+   regex_iterator(BidirectionalIterator a, BidirectionalIterator b, 
+                  const regex_type& re, 
+                  match_flag_type m = match_default)
+                  : pdata(new impl(&re, b, m))
+   {
+      if(!pdata->init(a))
+      {
+         pdata.reset();
+      }
+   }
+   regex_iterator(const regex_iterator& that)
+      : pdata(that.pdata) {}
+   regex_iterator& operator=(const regex_iterator& that)
+   {
+      pdata = that.pdata;
+      return *this;
+   }
+   bool operator==(const regex_iterator& that)const
+   { 
+      if((pdata.get() == 0) || (that.pdata.get() == 0))
+         return pdata.get() == that.pdata.get();
+      return pdata->compare(*(that.pdata.get())); 
+   }
+   bool operator!=(const regex_iterator& that)const
+   { return !(*this == that); }
+   const value_type& operator*()const
+   { return pdata->get(); }
+   const value_type* operator->()const
+   { return &(pdata->get()); }
+   regex_iterator& operator++()
+   {
+      cow();
+      if(0 == pdata->next())
+      {
+         pdata.reset();
+      }
+      return *this;
+   }
+   regex_iterator operator++(int)
+   {
+      regex_iterator result(*this);
+      ++(*this);
+      return result;
+   }
+private:
+
+   pimpl pdata;
+
+   void cow()
+   {
+      // copy-on-write
+      if(pdata.get() && !pdata.unique())
+      {
+         pdata.reset(new impl(*(pdata.get())));
+      }
+   }
+};
+
+typedef regex_iterator<const char*> cregex_iterator;
+typedef regex_iterator<std::string::const_iterator> sregex_iterator;
+#ifndef BOOST_NO_WREGEX
+typedef regex_iterator<const wchar_t*> wcregex_iterator;
+typedef regex_iterator<std::wstring::const_iterator> wsregex_iterator;
+#endif
+
+// make_regex_iterator:
+template <class charT, class traits>
+inline regex_iterator<const charT*, charT, traits> make_regex_iterator(const charT* p, const basic_regex<charT, traits>& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, m);
+}
+template <class charT, class traits, class ST, class SA>
+inline regex_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, m);
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif // BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_match.hpp

@@ -0,0 +1,382 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_match.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Regular expression matching algorithms.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+
+#ifndef BOOST_REGEX_MATCH_HPP
+#define BOOST_REGEX_MATCH_HPP
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+//
+// proc regex_match
+// returns true if the specified regular expression matches
+// the whole of the input.  Fills in what matched in m.
+//
+template <class BidiIterator, class Allocator, class charT, class traits>
+bool regex_match(BidiIterator first, BidiIterator last, 
+                 match_results<BidiIterator, Allocator>& m, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, Allocator, traits> matcher(first, last, m, e, flags, first);
+   return matcher.match();
+}
+template <class iterator, class charT, class traits>
+bool regex_match(iterator first, iterator last, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   match_results<iterator> m;
+   return regex_match(first, last, m, e, flags | regex_constants::match_any);
+}
+//
+// query_match convenience interfaces:
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+//
+// this isn't really a partial specialisation, but template function
+// overloading - if the compiler doesn't support partial specialisation
+// then it really won't support this either:
+template <class charT, class Allocator, class traits>
+inline bool regex_match(const charT* str, 
+                        match_results<const charT*, Allocator>& m, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + traits::length(str), m, e, flags);
+}
+
+template <class ST, class SA, class Allocator, class charT, class traits>
+inline bool regex_match(const std::basic_string<charT, ST, SA>& s, 
+                 match_results<typename std::basic_string<charT, ST, SA>::const_iterator, Allocator>& m, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+template <class charT, class traits>
+inline bool regex_match(const charT* str, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const charT*> m;
+   return regex_match(str, str + traits::length(str), m, e, flags | regex_constants::match_any);
+}
+
+template <class ST, class SA, class charT, class traits>
+inline bool regex_match(const std::basic_string<charT, ST, SA>& s, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   typedef typename std::basic_string<charT, ST, SA>::const_iterator iterator;
+   match_results<iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#else  // partial ordering
+inline bool regex_match(const char* str, 
+                        cmatch& m, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const char* str, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const char*> m;
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#ifndef BOOST_NO_STD_LOCALE
+inline bool regex_match(const char* str, 
+                        cmatch& m, 
+                        const basic_regex<char, cpp_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const char* str, 
+                        const basic_regex<char, cpp_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const char*> m;
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#endif
+inline bool regex_match(const char* str, 
+                        cmatch& m, 
+                        const basic_regex<char, c_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const char* str, 
+                        const basic_regex<char, c_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const char*> m;
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
+inline bool regex_match(const char* str, 
+                        cmatch& m, 
+                        const basic_regex<char, w32_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const char* str, 
+                        const basic_regex<char, w32_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const char*> m;
+   return regex_match(str, str + regex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#endif
+#ifndef BOOST_NO_WREGEX
+inline bool regex_match(const wchar_t* str, 
+                        wcmatch& m, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const wchar_t* str, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const wchar_t*> m;
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#ifndef BOOST_NO_STD_LOCALE
+inline bool regex_match(const wchar_t* str, 
+                        wcmatch& m, 
+                        const basic_regex<wchar_t, cpp_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const wchar_t* str, 
+                        const basic_regex<wchar_t, cpp_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const wchar_t*> m;
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#endif
+inline bool regex_match(const wchar_t* str, 
+                        wcmatch& m, 
+                        const basic_regex<wchar_t, c_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const wchar_t* str, 
+                        const basic_regex<wchar_t, c_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const wchar_t*> m;
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
+inline bool regex_match(const wchar_t* str, 
+                        wcmatch& m, 
+                        const basic_regex<wchar_t, w32_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_match(const wchar_t* str, 
+                        const basic_regex<wchar_t, w32_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const wchar_t*> m;
+   return regex_match(str, str + wregex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#endif
+#endif
+inline bool regex_match(const std::string& s, 
+                        smatch& m,
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::string& s, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::string::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#ifndef BOOST_NO_STD_LOCALE
+inline bool regex_match(const std::string& s, 
+                        smatch& m,
+                        const basic_regex<char, cpp_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::string& s, 
+                        const basic_regex<char, cpp_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::string::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#endif
+inline bool regex_match(const std::string& s, 
+                        smatch& m,
+                        const basic_regex<char, c_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::string& s, 
+                        const basic_regex<char, c_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::string::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
+inline bool regex_match(const std::string& s, 
+                        smatch& m,
+                        const basic_regex<char, w32_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::string& s, 
+                        const basic_regex<char, w32_regex_traits<char> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::string::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#endif
+#if !defined(BOOST_NO_WREGEX)
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        match_results<std::basic_string<wchar_t>::const_iterator>& m,
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::basic_string<wchar_t>::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#ifndef BOOST_NO_STD_LOCALE
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        match_results<std::basic_string<wchar_t>::const_iterator>& m,
+                        const basic_regex<wchar_t, cpp_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        const basic_regex<wchar_t, cpp_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::basic_string<wchar_t>::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#endif
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        match_results<std::basic_string<wchar_t>::const_iterator>& m,
+                        const basic_regex<wchar_t, c_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        const basic_regex<wchar_t, c_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::basic_string<wchar_t>::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        match_results<std::basic_string<wchar_t>::const_iterator>& m,
+                        const basic_regex<wchar_t, w32_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+inline bool regex_match(const std::basic_string<wchar_t>& s, 
+                        const basic_regex<wchar_t, w32_regex_traits<wchar_t> >& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<std::basic_string<wchar_t>::const_iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#endif
+#endif
+
+#endif
+
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif   // BOOST_REGEX_MATCH_HPP
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_merge.hpp

@@ -0,0 +1,93 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_format.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides formatting output routines for search and replace
+  *                operations.  Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_V4_REGEX_MERGE_HPP
+#define BOOST_REGEX_V4_REGEX_MERGE_HPP
+
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+template <class OutputIterator, class Iterator, class traits, class charT>
+inline OutputIterator regex_merge(OutputIterator out,
+                         Iterator first,
+                         Iterator last,
+                         const basic_regex<charT, traits>& e, 
+                         const charT* fmt, 
+                         match_flag_type flags = match_default)
+{
+   return regex_replace(out, first, last, e, fmt, flags);
+}
+
+template <class OutputIterator, class Iterator, class traits, class charT>
+inline OutputIterator regex_merge(OutputIterator out,
+                         Iterator first,
+                         Iterator last,
+                         const basic_regex<charT, traits>& e, 
+                         const std::basic_string<charT>& fmt,
+                         match_flag_type flags = match_default)
+{
+   return regex_merge(out, first, last, e, fmt.c_str(), flags);
+}
+
+template <class traits, class charT>
+inline std::basic_string<charT> regex_merge(const std::basic_string<charT>& s,
+                         const basic_regex<charT, traits>& e, 
+                         const charT* fmt,
+                         match_flag_type flags = match_default)
+{
+   return regex_replace(s, e, fmt, flags);
+}
+
+template <class traits, class charT>
+inline std::basic_string<charT> regex_merge(const std::basic_string<charT>& s,
+                         const basic_regex<charT, traits>& e, 
+                         const std::basic_string<charT>& fmt,
+                         match_flag_type flags = match_default)
+{
+   return regex_replace(s, e, fmt, flags);
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V4_REGEX_MERGE_HPP
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_raw_buffer.hpp

@@ -0,0 +1,241 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_raw_buffer.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Raw character buffer for regex code.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_RAW_BUFFER_HPP
+#define BOOST_REGEX_RAW_BUFFER_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#include <algorithm>
+#include <cstddef>
+
+namespace boost{
+   namespace BOOST_REGEX_DETAIL_NS{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+struct empty_padding{};
+
+union padding
+{
+   void* p;
+   unsigned int i;
+};
+
+template <int N>
+struct padding3
+{
+   enum{
+      padding_size = 8,
+      padding_mask = 7
+   };
+};
+
+template<>
+struct padding3<2>
+{
+   enum{
+      padding_size = 2,
+      padding_mask = 1
+   };
+};
+
+template<>
+struct padding3<4>
+{
+   enum{
+      padding_size = 4,
+      padding_mask = 3
+   };
+};
+
+template<>
+struct padding3<8>
+{
+   enum{
+      padding_size = 8,
+      padding_mask = 7
+   };
+};
+
+template<>
+struct padding3<16>
+{
+   enum{
+      padding_size = 16,
+      padding_mask = 15
+   };
+};
+
+enum{
+   padding_size = padding3<sizeof(padding)>::padding_size,
+   padding_mask = padding3<sizeof(padding)>::padding_mask
+};
+
+//
+// class raw_storage
+// basically this is a simplified vector<unsigned char>
+// this is used by basic_regex for expression storage
+//
+
+class raw_storage
+{
+public:
+   typedef std::size_t           size_type;
+   typedef unsigned char*        pointer;
+private:
+   pointer last, start, end;
+public:
+
+   raw_storage();
+   raw_storage(size_type n);
+
+   ~raw_storage()
+   {
+      ::operator delete(start);
+   }
+
+   void BOOST_REGEX_CALL resize(size_type n)
+   {
+      size_type newsize = start ? last - start : 1024;
+      while (newsize < n)
+         newsize *= 2;
+      size_type datasize = end - start;
+      // extend newsize to WORD/DWORD boundary:
+      newsize = (newsize + padding_mask) & ~(padding_mask);
+
+      // allocate and copy data:
+      pointer ptr = static_cast<pointer>(::operator new(newsize));
+      BOOST_REGEX_NOEH_ASSERT(ptr)
+         if (start)
+            std::memcpy(ptr, start, datasize);
+
+      // get rid of old buffer:
+      ::operator delete(start);
+
+      // and set up pointers:
+      start = ptr;
+      end = ptr + datasize;
+      last = ptr + newsize;
+   }
+
+   void* BOOST_REGEX_CALL extend(size_type n)
+   {
+      if(size_type(last - end) < n)
+         resize(n + (end - start));
+      pointer result = end;
+      end += n;
+      return result;
+   }
+
+   void* BOOST_REGEX_CALL insert(size_type pos, size_type n)
+   {
+      BOOST_REGEX_ASSERT(pos <= size_type(end - start));
+      if (size_type(last - end) < n)
+         resize(n + (end - start));
+      void* result = start + pos;
+      std::memmove(start + pos + n, start + pos, (end - start) - pos);
+      end += n;
+      return result;
+   }
+
+   size_type BOOST_REGEX_CALL size()
+   {
+      return size_type(end - start);
+   }
+
+   size_type BOOST_REGEX_CALL capacity()
+   {
+      return size_type(last - start);
+   }
+
+   void* BOOST_REGEX_CALL data()const
+   {
+      return start;
+   }
+
+   size_type BOOST_REGEX_CALL index(void* ptr)
+   {
+      return size_type(static_cast<pointer>(ptr) - static_cast<pointer>(data()));
+   }
+
+   void BOOST_REGEX_CALL clear()
+   {
+      end = start;
+   }
+
+   void BOOST_REGEX_CALL align()
+   {
+      // move end up to a boundary:
+      end = start + (((end - start) + padding_mask) & ~padding_mask);
+   }
+   void swap(raw_storage& that)
+   {
+      std::swap(start, that.start);
+      std::swap(end, that.end);
+      std::swap(last, that.last);
+  }
+};
+
+inline raw_storage::raw_storage()
+{
+   last = start = end = 0;
+}
+
+inline raw_storage::raw_storage(size_type n)
+{
+   start = end = static_cast<pointer>(::operator new(n));
+   BOOST_REGEX_NOEH_ASSERT(start)
+   last = start + n;
+}
+
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+#endif
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_replace.hpp

@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright (c) 1998-2009
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_format.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides formatting output routines for search and replace
+  *                operations.  Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_V4_REGEX_REPLACE_HPP
+#define BOOST_REGEX_V4_REGEX_REPLACE_HPP
+
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+template <class OutputIterator, class BidirectionalIterator, class traits, class charT, class Formatter>
+OutputIterator regex_replace(OutputIterator out,
+                         BidirectionalIterator first,
+                         BidirectionalIterator last,
+                         const basic_regex<charT, traits>& e, 
+                         Formatter fmt, 
+                         match_flag_type flags = match_default)
+{
+   regex_iterator<BidirectionalIterator, charT, traits> i(first, last, e, flags);
+   regex_iterator<BidirectionalIterator, charT, traits> j;
+   if(i == j)
+   {
+      if(!(flags & regex_constants::format_no_copy))
+         out = BOOST_REGEX_DETAIL_NS::copy(first, last, out);
+   }
+   else
+   {
+      BidirectionalIterator last_m(first);
+      while(i != j)
+      {
+         if(!(flags & regex_constants::format_no_copy))
+            out = BOOST_REGEX_DETAIL_NS::copy(i->prefix().first, i->prefix().second, out); 
+         out = i->format(out, fmt, flags, e);
+         last_m = (*i)[0].second;
+         if(flags & regex_constants::format_first_only)
+            break;
+         ++i;
+      }
+      if(!(flags & regex_constants::format_no_copy))
+         out = BOOST_REGEX_DETAIL_NS::copy(last_m, last, out);
+   }
+   return out;
+}
+
+template <class traits, class charT, class Formatter>
+std::basic_string<charT> regex_replace(const std::basic_string<charT>& s,
+                         const basic_regex<charT, traits>& e, 
+                         Formatter fmt,
+                         match_flag_type flags = match_default)
+{
+   std::basic_string<charT> result;
+   BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<charT> > i(result);
+   regex_replace(i, s.begin(), s.end(), e, fmt, flags);
+   return result;
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V4_REGEX_REPLACE_HPP
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_search.hpp

@@ -0,0 +1,217 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_search.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_search implementation.
+  */
+
+#ifndef BOOST_REGEX_V4_REGEX_SEARCH_HPP
+#define BOOST_REGEX_V4_REGEX_SEARCH_HPP
+
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+template <class BidiIterator, class Allocator, class charT, class traits>
+bool regex_search(BidiIterator first, BidiIterator last, 
+                  match_results<BidiIterator, Allocator>& m, 
+                  const basic_regex<charT, traits>& e, 
+                  match_flag_type flags = match_default)
+{
+   return regex_search(first, last, m, e, flags, first);
+}
+
+template <class BidiIterator, class Allocator, class charT, class traits>
+bool regex_search(BidiIterator first, BidiIterator last, 
+                  match_results<BidiIterator, Allocator>& m, 
+                  const basic_regex<charT, traits>& e, 
+                  match_flag_type flags,
+                  BidiIterator base)
+{
+   if(e.flags() & regex_constants::failbit)
+      return false;
+
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, Allocator, traits> matcher(first, last, m, e, flags, base);
+   return matcher.find();
+}
+
+//
+// regex_search convenience interfaces:
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+//
+// this isn't really a partial specialisation, but template function
+// overloading - if the compiler doesn't support partial specialisation
+// then it really won't support this either:
+template <class charT, class Allocator, class traits>
+inline bool regex_search(const charT* str, 
+                        match_results<const charT*, Allocator>& m, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(str, str + traits::length(str), m, e, flags);
+}
+
+template <class ST, class SA, class Allocator, class charT, class traits>
+inline bool regex_search(const std::basic_string<charT, ST, SA>& s, 
+                 match_results<typename std::basic_string<charT, ST, SA>::const_iterator, Allocator>& m, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_search(s.begin(), s.end(), m, e, flags);
+}
+#else  // partial overloads:
+inline bool regex_search(const char* str, 
+                        cmatch& m, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(str, str + regex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_search(const char* first, const char* last, 
+                  const regex& e, 
+                  match_flag_type flags = match_default)
+{
+   cmatch m;
+   return regex_search(first, last, m, e, flags | regex_constants::match_any);
+}
+
+#ifndef BOOST_NO_WREGEX
+inline bool regex_search(const wchar_t* str, 
+                        wcmatch& m, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(str, str + wregex::traits_type::length(str), m, e, flags);
+}
+inline bool regex_search(const wchar_t* first, const wchar_t* last, 
+                  const wregex& e, 
+                  match_flag_type flags = match_default)
+{
+   wcmatch m;
+   return regex_search(first, last, m, e, flags | regex_constants::match_any);
+}
+#endif
+inline bool regex_search(const std::string& s, 
+                        smatch& m,
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(s.begin(), s.end(), m, e, flags);
+}
+#if !defined(BOOST_NO_WREGEX)
+inline bool regex_search(const std::basic_string<wchar_t>& s, 
+                        wsmatch& m,
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(s.begin(), s.end(), m, e, flags);
+}
+#endif
+
+#endif
+
+template <class BidiIterator, class charT, class traits>
+bool regex_search(BidiIterator first, BidiIterator last, 
+                  const basic_regex<charT, traits>& e, 
+                  match_flag_type flags = match_default)
+{
+   if(e.flags() & regex_constants::failbit)
+      return false;
+
+   match_results<BidiIterator> m;
+   typedef typename match_results<BidiIterator>::allocator_type match_alloc_type;
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, match_alloc_type, traits> matcher(first, last, m, e, flags | regex_constants::match_any, first);
+   return matcher.find();
+}
+
+#ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+
+template <class charT, class traits>
+inline bool regex_search(const charT* str, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(str, str + traits::length(str), e, flags);
+}
+
+template <class ST, class SA, class charT, class traits>
+inline bool regex_search(const std::basic_string<charT, ST, SA>& s, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_search(s.begin(), s.end(), e, flags);
+}
+#else  // non-template function overloads
+inline bool regex_search(const char* str, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   cmatch m;
+   return regex_search(str, str + regex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#ifndef BOOST_NO_WREGEX
+inline bool regex_search(const wchar_t* str, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   wcmatch m;
+   return regex_search(str, str + wregex::traits_type::length(str), m, e, flags | regex_constants::match_any);
+}
+#endif
+inline bool regex_search(const std::string& s, 
+                        const regex& e, 
+                        match_flag_type flags = match_default)
+{
+   smatch m;
+   return regex_search(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+#if !defined(BOOST_NO_WREGEX)
+inline bool regex_search(const std::basic_string<wchar_t>& s, 
+                        const wregex& e, 
+                        match_flag_type flags = match_default)
+{
+   wsmatch m;
+   return regex_search(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+
+#endif // BOOST_NO_WREGEX
+
+#endif // partial overload
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V4_REGEX_SEARCH_HPP
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_split.hpp

@@ -0,0 +1,174 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_split.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Implements regex_split and associated functions.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_SPLIT_HPP
+#define BOOST_REGEX_SPLIT_HPP
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#if BOOST_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+template <class charT>
+const basic_regex<charT>& get_default_expression(charT)
+{
+   static const charT expression_text[4] = { '\\', 's', '+', '\00', };
+   static const basic_regex<charT> e(expression_text);
+   return e;
+}
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1>
+class split_pred
+{
+   typedef std::basic_string<charT, Traits1, Alloc1> string_type;
+   typedef typename string_type::const_iterator iterator_type;
+   iterator_type* p_last;
+   OutputIterator* p_out;
+   std::size_t* p_max;
+   std::size_t initial_max;
+public:
+   split_pred(iterator_type* a, OutputIterator* b, std::size_t* c)
+      : p_last(a), p_out(b), p_max(c), initial_max(*c) {}
+
+   bool operator()(const match_results<iterator_type>& what);
+};
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1>
+bool split_pred<OutputIterator, charT, Traits1, Alloc1>::operator()
+   (const match_results<iterator_type>& what)
+{
+   *p_last = what[0].second;
+   if(what.size() > 1)
+   {
+      // output sub-expressions only:
+      for(unsigned i = 1; i < what.size(); ++i)
+      {
+         *(*p_out) = what.str(i);
+         ++(*p_out);
+         if(0 == --*p_max) return false;
+      }
+      return *p_max != 0;
+   }
+   else
+   {
+      // output $` only if it's not-null or not at the start of the input:
+      const sub_match<iterator_type>& sub = what[-1];
+      if((sub.first != sub.second) || (*p_max != initial_max))
+      {
+         *(*p_out) = sub.str();
+         ++(*p_out);
+         return --*p_max;
+      }
+   }
+   //
+   // initial null, do nothing:
+   return true;
+}
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1, class Traits2>
+std::size_t regex_split(OutputIterator out,
+                   std::basic_string<charT, Traits1, Alloc1>& s, 
+                   const basic_regex<charT, Traits2>& e,
+                   match_flag_type flags,
+                   std::size_t max_split)
+{
+   typedef typename std::basic_string<charT, Traits1, Alloc1>::const_iterator  ci_t;
+   //typedef typename match_results<ci_t>::allocator_type                        match_allocator;
+   ci_t last = s.begin();
+   std::size_t init_size = max_split;
+   BOOST_REGEX_DETAIL_NS::split_pred<OutputIterator, charT, Traits1, Alloc1> pred(&last, &out, &max_split);
+   ci_t i, j;
+   i = s.begin();
+   j = s.end();
+   regex_grep(pred, i, j, e, flags);
+   //
+   // if there is still input left, do a final push as long as max_split
+   // is not exhausted, and we're not splitting sub-expressions rather 
+   // than whitespace:
+   if(max_split && (last != s.end()) && (e.mark_count() == 0))
+   {
+      *out = std::basic_string<charT, Traits1, Alloc1>((ci_t)last, (ci_t)s.end());
+      ++out;
+      last = s.end();
+      --max_split;
+   }
+   //
+   // delete from the string everything that has been processed so far:
+   s.erase(0, last - s.begin());
+   //
+   // return the number of new records pushed:
+   return init_size - max_split;
+}
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1, class Traits2>
+inline std::size_t regex_split(OutputIterator out,
+                   std::basic_string<charT, Traits1, Alloc1>& s, 
+                   const basic_regex<charT, Traits2>& e,
+                   match_flag_type flags = match_default)
+{
+   return regex_split(out, s, e, flags, UINT_MAX);
+}
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1>
+inline std::size_t regex_split(OutputIterator out,
+                   std::basic_string<charT, Traits1, Alloc1>& s)
+{
+   return regex_split(out, s, BOOST_REGEX_DETAIL_NS::get_default_expression(charT(0)), match_default, UINT_MAX);
+}
+
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_token_iterator.hpp

@@ -0,0 +1,327 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_token_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_token_iterator implementation.
+  */
+
+#ifndef BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+#define BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/workaround.hpp>
+#if (BOOST_WORKAROUND(BOOST_BORLANDC, >= 0x560) && BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x570)))\
+      || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
+//
+// Borland C++ Builder 6, and Visual C++ 6,
+// can't cope with the array template constructor
+// so we have a template member that will accept any type as 
+// argument, and then assert that is really is an array:
+//
+#include <boost/static_assert.hpp>
+#include <boost/type_traits/is_array.hpp>
+#endif
+
+namespace boost{
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#pragma warning(push)
+#pragma warning(disable:4700)
+#endif
+
+template <class BidirectionalIterator,
+          class charT,
+          class traits>
+class regex_token_iterator_implementation 
+{
+   typedef basic_regex<charT, traits> regex_type;
+   typedef sub_match<BidirectionalIterator>      value_type;
+
+   match_results<BidirectionalIterator> what;   // current match
+   BidirectionalIterator                base;    // start of search area
+   BidirectionalIterator                end;    // end of search area
+   const regex_type                     re;    // the expression
+   match_flag_type                      flags;  // match flags
+   value_type                           result; // the current string result
+   int                                  N;      // the current sub-expression being enumerated
+   std::vector<int>                     subs;   // the sub-expressions to enumerate
+
+public:
+   regex_token_iterator_implementation(const regex_token_iterator_implementation& other)
+      : what(other.what), base(other.base), end(other.end), re(other.re), flags(other.flags), result(other.result), N(other.N), subs(other.subs) {}
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, int sub, match_flag_type f)
+      : end(last), re(*p), flags(f), N(0){ subs.push_back(sub); }
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const std::vector<int>& v, match_flag_type f)
+      : end(last), re(*p), flags(f), N(0), subs(v){}
+#if !BOOST_WORKAROUND(__HP_aCC, < 60700)
+#if (BOOST_WORKAROUND(BOOST_BORLANDC, >= 0x560) && BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x570)))\
+      || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) \
+      || BOOST_WORKAROUND(__HP_aCC, < 60700)
+   template <class T>
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const T& submatches, match_flag_type f)
+      : end(last), re(*p), flags(f), N(0)
+   {
+      // assert that T really is an array:
+      BOOST_STATIC_ASSERT(::boost::is_array<T>::value);
+      const std::size_t array_size = sizeof(T) / sizeof(submatches[0]);
+      for(std::size_t i = 0; i < array_size; ++i)
+      {
+         subs.push_back(submatches[i]);
+      }
+   }
+#else
+   template <std::size_t CN>
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const int (&submatches)[CN], match_flag_type f)
+      : end(last), re(*p), flags(f), N(0)
+   {
+      for(std::size_t i = 0; i < CN; ++i)
+      {
+         subs.push_back(submatches[i]);
+      }
+   }
+#endif
+#endif
+   bool init(BidirectionalIterator first)
+   {
+      N = 0;
+      base = first;
+      if(regex_search(first, end, what, re, flags, base) == true)
+      {
+         N = 0;
+         result = ((subs[N] == -1) ? what.prefix() : what[(int)subs[N]]);
+         return true;
+      }
+      else if((subs[N] == -1) && (first != end))
+      {
+         result.first = first;
+         result.second = end;
+         result.matched = (first != end);
+         N = -1;
+         return true;
+      }
+      return false;
+   }
+   bool compare(const regex_token_iterator_implementation& that)
+   {
+      if(this == &that) return true;
+      return (&re.get_data() == &that.re.get_data()) 
+         && (end == that.end) 
+         && (flags == that.flags) 
+         && (N == that.N) 
+         && (what[0].first == that.what[0].first) 
+         && (what[0].second == that.what[0].second);
+   }
+   const value_type& get()
+   { return result; }
+   bool next()
+   {
+      if(N == -1)
+         return false;
+      if(N+1 < (int)subs.size())
+      {
+         ++N;
+         result =((subs[N] == -1) ? what.prefix() : what[subs[N]]);
+         return true;
+      }
+      //if(what.prefix().first != what[0].second)
+      //   flags |= /*match_prev_avail |*/ regex_constants::match_not_bob;
+      BidirectionalIterator last_end(what[0].second);
+      if(regex_search(last_end, end, what, re, ((what[0].first == what[0].second) ? flags | regex_constants::match_not_initial_null : flags), base))
+      {
+         N =0;
+         result =((subs[N] == -1) ? what.prefix() : what[subs[N]]);
+         return true;
+      }
+      else if((last_end != end) && (subs[0] == -1))
+      {
+         N =-1;
+         result.first = last_end;
+         result.second = end;
+         result.matched = (last_end != end);
+         return true;
+      }
+      return false;
+   }
+private:
+   regex_token_iterator_implementation& operator=(const regex_token_iterator_implementation&);
+};
+
+template <class BidirectionalIterator, 
+          class charT = BOOST_DEDUCED_TYPENAME BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidirectionalIterator>::value_type,
+          class traits = regex_traits<charT> >
+class regex_token_iterator 
+{
+private:
+   typedef regex_token_iterator_implementation<BidirectionalIterator, charT, traits> impl;
+   typedef shared_ptr<impl> pimpl;
+public:
+   typedef          basic_regex<charT, traits>                   regex_type;
+   typedef          sub_match<BidirectionalIterator>                        value_type;
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidirectionalIterator>::difference_type 
+                                                                            difference_type;
+   typedef          const value_type*                                       pointer;
+   typedef          const value_type&                                       reference; 
+   typedef          std::forward_iterator_tag                               iterator_category;
+   
+   regex_token_iterator(){}
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, 
+                        int submatch = 0, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatch, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, 
+                        const std::vector<int>& submatches, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+#if !BOOST_WORKAROUND(__HP_aCC, < 60700)
+#if (BOOST_WORKAROUND(BOOST_BORLANDC, >= 0x560) && BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x570)))\
+      || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) \
+      || BOOST_WORKAROUND(__HP_aCC, < 60700)
+   template <class T>
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re,
+                        const T& submatches, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+#else
+   template <std::size_t N>
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re,
+                        const int (&submatches)[N], match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+#endif
+#endif
+   regex_token_iterator(const regex_token_iterator& that)
+      : pdata(that.pdata) {}
+   regex_token_iterator& operator=(const regex_token_iterator& that)
+   {
+      pdata = that.pdata;
+      return *this;
+   }
+   bool operator==(const regex_token_iterator& that)const
+   { 
+      if((pdata.get() == 0) || (that.pdata.get() == 0))
+         return pdata.get() == that.pdata.get();
+      return pdata->compare(*(that.pdata.get())); 
+   }
+   bool operator!=(const regex_token_iterator& that)const
+   { return !(*this == that); }
+   const value_type& operator*()const
+   { return pdata->get(); }
+   const value_type* operator->()const
+   { return &(pdata->get()); }
+   regex_token_iterator& operator++()
+   {
+      cow();
+      if(0 == pdata->next())
+      {
+         pdata.reset();
+      }
+      return *this;
+   }
+   regex_token_iterator operator++(int)
+   {
+      regex_token_iterator result(*this);
+      ++(*this);
+      return result;
+   }
+private:
+
+   pimpl pdata;
+
+   void cow()
+   {
+      // copy-on-write
+      if(pdata.get() && !pdata.unique())
+      {
+         pdata.reset(new impl(*(pdata.get())));
+      }
+   }
+};
+
+typedef regex_token_iterator<const char*> cregex_token_iterator;
+typedef regex_token_iterator<std::string::const_iterator> sregex_token_iterator;
+#ifndef BOOST_NO_WREGEX
+typedef regex_token_iterator<const wchar_t*> wcregex_token_iterator;
+typedef regex_token_iterator<std::wstring::const_iterator> wsregex_token_iterator;
+#endif
+
+template <class charT, class traits>
+inline regex_token_iterator<const charT*, charT, traits> make_regex_token_iterator(const charT* p, const basic_regex<charT, traits>& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, submatch, m);
+}
+template <class charT, class traits, class ST, class SA>
+inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_token_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, submatch, m);
+}
+template <class charT, class traits, std::size_t N>
+inline regex_token_iterator<const charT*, charT, traits> make_regex_token_iterator(const charT* p, const basic_regex<charT, traits>& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, submatch, m);
+}
+template <class charT, class traits, class ST, class SA, std::size_t N>
+inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_token_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, submatch, m);
+}
+template <class charT, class traits>
+inline regex_token_iterator<const charT*, charT, traits> make_regex_token_iterator(const charT* p, const basic_regex<charT, traits>& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, submatch, m);
+}
+template <class charT, class traits, class ST, class SA>
+inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_token_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, submatch, m);
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif // BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_traits.hpp

@@ -0,0 +1,189 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_traits.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression traits classes.
+  */
+
+#ifndef BOOST_REGEX_TRAITS_HPP_INCLUDED
+#define BOOST_REGEX_TRAITS_HPP_INCLUDED
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+#ifndef BOOST_REGEX_WORKAROUND_HPP
+#include <boost/regex/v4/regex_workaround.hpp>
+#endif
+#ifndef BOOST_REGEX_SYNTAX_TYPE_HPP
+#include <boost/regex/v4/syntax_type.hpp>
+#endif
+#ifndef BOOST_REGEX_ERROR_TYPE_HPP
+#include <boost/regex/v4/error_type.hpp>
+#endif
+#ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
+#include <boost/regex/v4/regex_traits_defaults.hpp>
+#endif
+#ifndef BOOST_NO_STD_LOCALE
+#  ifndef BOOST_CPP_REGEX_TRAITS_HPP_INCLUDED
+#     include <boost/regex/v4/cpp_regex_traits.hpp>
+#  endif
+#endif
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, < 0x560)
+#  ifndef BOOST_C_REGEX_TRAITS_HPP_INCLUDED
+#     include <boost/regex/v4/c_regex_traits.hpp>
+#  endif
+#endif
+#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
+#  ifndef BOOST_W32_REGEX_TRAITS_HPP_INCLUDED
+#     include <boost/regex/v4/w32_regex_traits.hpp>
+#  endif
+#endif
+#ifndef BOOST_REGEX_FWD_HPP_INCLUDED
+#include <boost/regex_fwd.hpp>
+#endif
+
+#include "boost/mpl/has_xxx.hpp"
+#include <boost/static_assert.hpp>
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+
+template <class charT, class implementationT >
+struct regex_traits : public implementationT
+{
+   regex_traits() : implementationT() {}
+};
+
+//
+// class regex_traits_wrapper.
+// this is what our implementation will actually store;
+// it provides default implementations of the "optional"
+// interfaces that we support, in addition to the
+// required "standard" ones:
+//
+namespace BOOST_REGEX_DETAIL_NS{
+#if !BOOST_WORKAROUND(__HP_aCC, < 60000)
+BOOST_MPL_HAS_XXX_TRAIT_DEF(boost_extensions_tag)
+#else
+template<class T>
+struct has_boost_extensions_tag
+{
+   BOOST_STATIC_CONSTANT(bool, value = false);
+};
+#endif
+
+template <class BaseT>
+struct default_wrapper : public BaseT
+{
+   typedef typename BaseT::char_type char_type;
+   std::string error_string(::boost::regex_constants::error_type e)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::get_default_error_string(e);
+   }
+   ::boost::regex_constants::syntax_type syntax_type(char_type c)const
+   {
+      return ((c & 0x7f) == c) ? get_default_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::syntax_char;
+   }
+   ::boost::regex_constants::escape_syntax_type escape_syntax_type(char_type c)const
+   {
+      return ((c & 0x7f) == c) ? get_default_escape_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::escape_type_identity;
+   }
+   boost::intmax_t toi(const char_type*& p1, const char_type* p2, int radix)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::global_toi(p1, p2, radix, *this);
+   }
+   char_type translate(char_type c, bool icase)const
+   {
+      return (icase ? this->translate_nocase(c) : this->translate(c));
+   }
+   char_type translate(char_type c)const
+   {
+      return BaseT::translate(c);
+   }
+   char_type tolower(char_type c)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::global_lower(c);
+   }
+   char_type toupper(char_type c)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::global_upper(c);
+   }
+};
+
+template <class BaseT, bool has_extensions>
+struct compute_wrapper_base
+{
+   typedef BaseT type;
+};
+#if !BOOST_WORKAROUND(__HP_aCC, < 60000)
+template <class BaseT>
+struct compute_wrapper_base<BaseT, false>
+{
+   typedef default_wrapper<BaseT> type;
+};
+#else
+template <>
+struct compute_wrapper_base<c_regex_traits<char>, false>
+{
+   typedef default_wrapper<c_regex_traits<char> > type;
+};
+#ifndef BOOST_NO_WREGEX
+template <>
+struct compute_wrapper_base<c_regex_traits<wchar_t>, false>
+{
+   typedef default_wrapper<c_regex_traits<wchar_t> > type;
+};
+#endif
+#endif
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+template <class BaseT>
+struct regex_traits_wrapper 
+   : public ::boost::BOOST_REGEX_DETAIL_NS::compute_wrapper_base<
+               BaseT, 
+               ::boost::BOOST_REGEX_DETAIL_NS::has_boost_extensions_tag<BaseT>::value
+            >::type
+{
+   regex_traits_wrapper(){}
+private:
+   regex_traits_wrapper(const regex_traits_wrapper&);
+   regex_traits_wrapper& operator=(const regex_traits_wrapper&);
+};
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif // include
+

lib/third_party/boost/regex/include/boost/regex/v4/regex_traits_defaults.hpp

@@ -0,0 +1,997 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_traits_defaults.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares API's for access to regex_traits default properties.
+  */
+
+#ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
+#define BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#include <boost/regex/config.hpp>
+#include <boost/cstdint.hpp>
+
+#include <cctype>
+#include <cwctype>
+#include <locale>
+
+#ifndef BOOST_REGEX_SYNTAX_TYPE_HPP
+#include <boost/regex/v4/syntax_type.hpp>
+#endif
+#ifndef BOOST_REGEX_ERROR_TYPE_HPP
+#include <boost/regex/v4/error_type.hpp>
+#endif
+#include <boost/regex/v4/regex_workaround.hpp>
+#include <boost/type_traits/make_unsigned.hpp>
+#include <boost/utility/enable_if.hpp>
+
+#ifdef BOOST_NO_STDC_NAMESPACE
+namespace std{
+   using ::strlen;
+}
+#endif
+
+namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
+
+
+//
+// helpers to suppress warnings:
+//
+template <class charT>
+inline bool is_extended(charT c)
+{
+   typedef typename make_unsigned<charT>::type unsigned_type; 
+   return (sizeof(charT) > 1) && (static_cast<unsigned_type>(c) >= 256u); 
+}
+inline bool is_extended(char)
+{ return false; }
+
+inline const char* BOOST_REGEX_CALL get_default_syntax(regex_constants::syntax_type n)
+{
+   // if the user hasn't supplied a message catalog, then this supplies
+   // default "messages" for us to load in the range 1-100.
+   const char* messages[] = {
+         "",
+         "(",
+         ")",
+         "$",
+         "^",
+         ".",
+         "*",
+         "+",
+         "?",
+         "[",
+         "]",
+         "|",
+         "\\",
+         "#",
+         "-",
+         "{",
+         "}",
+         "0123456789",
+         "b",
+         "B",
+         "<",
+         ">",
+         "",
+         "",
+         "A`",
+         "z'",
+         "\n",
+         ",",
+         "a",
+         "f",
+         "n",
+         "r",
+         "t",
+         "v",
+         "x",
+         "c",
+         ":",
+         "=",
+         "e",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "E",
+         "Q",
+         "X",
+         "C",
+         "Z",
+         "G",
+         "!",
+         "p",
+         "P",
+         "N",
+         "gk",
+         "K",
+         "R",
+   };
+
+   return ((n >= (sizeof(messages) / sizeof(messages[1]))) ? "" : messages[n]);
+}
+
+inline const char* BOOST_REGEX_CALL get_default_error_string(regex_constants::error_type n)
+{
+   static const char* const s_default_error_messages[] = {
+      "Success",                                                            /* REG_NOERROR 0 error_ok */
+      "No match",                                                           /* REG_NOMATCH 1 error_no_match */
+      "Invalid regular expression.",                                        /* REG_BADPAT 2 error_bad_pattern */
+      "Invalid collation character.",                                       /* REG_ECOLLATE 3 error_collate */
+      "Invalid character class name, collating name, or character range.",  /* REG_ECTYPE 4 error_ctype */
+      "Invalid or unterminated escape sequence.",                           /* REG_EESCAPE 5 error_escape */
+      "Invalid back reference: specified capturing group does not exist.",  /* REG_ESUBREG 6 error_backref */
+      "Unmatched [ or [^ in character class declaration.",                  /* REG_EBRACK 7 error_brack */
+      "Unmatched marking parenthesis ( or \\(.",                            /* REG_EPAREN 8 error_paren */
+      "Unmatched quantified repeat operator { or \\{.",                     /* REG_EBRACE 9 error_brace */
+      "Invalid content of repeat range.",                                   /* REG_BADBR 10 error_badbrace */
+      "Invalid range end in character class",                               /* REG_ERANGE 11 error_range */
+      "Out of memory.",                                                     /* REG_ESPACE 12 error_space NOT USED */
+      "Invalid preceding regular expression prior to repetition operator.", /* REG_BADRPT 13 error_badrepeat */
+      "Premature end of regular expression",                                /* REG_EEND 14 error_end NOT USED */
+      "Regular expression is too large.",                                   /* REG_ESIZE 15 error_size NOT USED */
+      "Unmatched ) or \\)",                                                 /* REG_ERPAREN 16 error_right_paren NOT USED */
+      "Empty regular expression.",                                          /* REG_EMPTY 17 error_empty */
+      "The complexity of matching the regular expression exceeded predefined bounds.  "
+      "Try refactoring the regular expression to make each choice made by the state machine unambiguous.  "
+      "This exception is thrown to prevent \"eternal\" matches that take an "
+      "indefinite period time to locate.",                                  /* REG_ECOMPLEXITY 18 error_complexity */
+      "Ran out of stack space trying to match the regular expression.",     /* REG_ESTACK 19 error_stack */
+      "Invalid or unterminated Perl (?...) sequence.",                      /* REG_E_PERL 20 error_perl */
+      "Unknown error.",                                                     /* REG_E_UNKNOWN 21 error_unknown */
+   };
+
+   return (n > ::boost::regex_constants::error_unknown) ? s_default_error_messages[::boost::regex_constants::error_unknown] : s_default_error_messages[n];
+}
+
+inline regex_constants::syntax_type BOOST_REGEX_CALL get_default_syntax_type(char c)
+{
+   //
+   // char_syntax determines how the compiler treats a given character
+   // in a regular expression.
+   //
+   static regex_constants::syntax_type char_syntax[] = {
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_newline,     /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /* */    // 32
+      regex_constants::syntax_not,        /*!*/
+      regex_constants::syntax_char,        /*"*/
+      regex_constants::syntax_hash,        /*#*/
+      regex_constants::syntax_dollar,        /*$*/
+      regex_constants::syntax_char,        /*%*/
+      regex_constants::syntax_char,        /*&*/
+      regex_constants::escape_type_end_buffer,  /*'*/
+      regex_constants::syntax_open_mark,        /*(*/
+      regex_constants::syntax_close_mark,        /*)*/
+      regex_constants::syntax_star,        /***/
+      regex_constants::syntax_plus,        /*+*/
+      regex_constants::syntax_comma,        /*,*/
+      regex_constants::syntax_dash,        /*-*/
+      regex_constants::syntax_dot,        /*.*/
+      regex_constants::syntax_char,        /*/*/
+      regex_constants::syntax_digit,        /*0*/
+      regex_constants::syntax_digit,        /*1*/
+      regex_constants::syntax_digit,        /*2*/
+      regex_constants::syntax_digit,        /*3*/
+      regex_constants::syntax_digit,        /*4*/
+      regex_constants::syntax_digit,        /*5*/
+      regex_constants::syntax_digit,        /*6*/
+      regex_constants::syntax_digit,        /*7*/
+      regex_constants::syntax_digit,        /*8*/
+      regex_constants::syntax_digit,        /*9*/
+      regex_constants::syntax_colon,        /*:*/
+      regex_constants::syntax_char,        /*;*/
+      regex_constants::escape_type_left_word, /*<*/
+      regex_constants::syntax_equal,        /*=*/
+      regex_constants::escape_type_right_word, /*>*/
+      regex_constants::syntax_question,        /*?*/
+      regex_constants::syntax_char,        /*@*/
+      regex_constants::syntax_char,        /*A*/
+      regex_constants::syntax_char,        /*B*/
+      regex_constants::syntax_char,        /*C*/
+      regex_constants::syntax_char,        /*D*/
+      regex_constants::syntax_char,        /*E*/
+      regex_constants::syntax_char,        /*F*/
+      regex_constants::syntax_char,        /*G*/
+      regex_constants::syntax_char,        /*H*/
+      regex_constants::syntax_char,        /*I*/
+      regex_constants::syntax_char,        /*J*/
+      regex_constants::syntax_char,        /*K*/
+      regex_constants::syntax_char,        /*L*/
+      regex_constants::syntax_char,        /*M*/
+      regex_constants::syntax_char,        /*N*/
+      regex_constants::syntax_char,        /*O*/
+      regex_constants::syntax_char,        /*P*/
+      regex_constants::syntax_char,        /*Q*/
+      regex_constants::syntax_char,        /*R*/
+      regex_constants::syntax_char,        /*S*/
+      regex_constants::syntax_char,        /*T*/
+      regex_constants::syntax_char,        /*U*/
+      regex_constants::syntax_char,        /*V*/
+      regex_constants::syntax_char,        /*W*/
+      regex_constants::syntax_char,        /*X*/
+      regex_constants::syntax_char,        /*Y*/
+      regex_constants::syntax_char,        /*Z*/
+      regex_constants::syntax_open_set,        /*[*/
+      regex_constants::syntax_escape,        /*\*/
+      regex_constants::syntax_close_set,        /*]*/
+      regex_constants::syntax_caret,        /*^*/
+      regex_constants::syntax_char,        /*_*/
+      regex_constants::syntax_char,        /*`*/
+      regex_constants::syntax_char,        /*a*/
+      regex_constants::syntax_char,        /*b*/
+      regex_constants::syntax_char,        /*c*/
+      regex_constants::syntax_char,        /*d*/
+      regex_constants::syntax_char,        /*e*/
+      regex_constants::syntax_char,        /*f*/
+      regex_constants::syntax_char,        /*g*/
+      regex_constants::syntax_char,        /*h*/
+      regex_constants::syntax_char,        /*i*/
+      regex_constants::syntax_char,        /*j*/
+      regex_constants::syntax_char,        /*k*/
+      regex_constants::syntax_char,        /*l*/
+      regex_constants::syntax_char,        /*m*/
+      regex_constants::syntax_char,        /*n*/
+      regex_constants::syntax_char,        /*o*/
+      regex_constants::syntax_char,        /*p*/
+      regex_constants::syntax_char,        /*q*/
+      regex_constants::syntax_char,        /*r*/
+      regex_constants::syntax_char,        /*s*/
+      regex_constants::syntax_char,        /*t*/
+      regex_constants::syntax_char,        /*u*/
+      regex_constants::syntax_char,        /*v*/
+      regex_constants::syntax_char,        /*w*/
+      regex_constants::syntax_char,        /*x*/
+      regex_constants::syntax_char,        /*y*/
+      regex_constants::syntax_char,        /*z*/
+      regex_constants::syntax_open_brace,        /*{*/
+      regex_constants::syntax_or,        /*|*/
+      regex_constants::syntax_close_brace,        /*}*/
+      regex_constants::syntax_char,        /*~*/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+   };
+
+   return char_syntax[(unsigned char)c];
+}
+
+inline regex_constants::escape_syntax_type BOOST_REGEX_CALL get_default_escape_syntax_type(char c)
+{
+   //
+   // char_syntax determines how the compiler treats a given character
+   // in a regular expression.
+   //
+   static regex_constants::escape_syntax_type char_syntax[] = {
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,     /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /* */    // 32
+      regex_constants::escape_type_identity,        /*!*/
+      regex_constants::escape_type_identity,        /*"*/
+      regex_constants::escape_type_identity,        /*#*/
+      regex_constants::escape_type_identity,        /*$*/
+      regex_constants::escape_type_identity,        /*%*/
+      regex_constants::escape_type_identity,        /*&*/
+      regex_constants::escape_type_end_buffer,        /*'*/
+      regex_constants::syntax_open_mark,        /*(*/
+      regex_constants::syntax_close_mark,        /*)*/
+      regex_constants::escape_type_identity,        /***/
+      regex_constants::syntax_plus,                 /*+*/
+      regex_constants::escape_type_identity,        /*,*/
+      regex_constants::escape_type_identity,        /*-*/
+      regex_constants::escape_type_identity,        /*.*/
+      regex_constants::escape_type_identity,        /*/*/
+      regex_constants::escape_type_decimal,        /*0*/
+      regex_constants::escape_type_backref,        /*1*/
+      regex_constants::escape_type_backref,        /*2*/
+      regex_constants::escape_type_backref,        /*3*/
+      regex_constants::escape_type_backref,        /*4*/
+      regex_constants::escape_type_backref,        /*5*/
+      regex_constants::escape_type_backref,        /*6*/
+      regex_constants::escape_type_backref,        /*7*/
+      regex_constants::escape_type_backref,        /*8*/
+      regex_constants::escape_type_backref,        /*9*/
+      regex_constants::escape_type_identity,        /*:*/
+      regex_constants::escape_type_identity,        /*;*/
+      regex_constants::escape_type_left_word,        /*<*/
+      regex_constants::escape_type_identity,        /*=*/
+      regex_constants::escape_type_right_word,        /*>*/
+      regex_constants::syntax_question,              /*?*/
+      regex_constants::escape_type_identity,         /*@*/
+      regex_constants::escape_type_start_buffer,     /*A*/
+      regex_constants::escape_type_not_word_assert,  /*B*/
+      regex_constants::escape_type_C,                /*C*/
+      regex_constants::escape_type_not_class,        /*D*/
+      regex_constants::escape_type_E,                /*E*/
+      regex_constants::escape_type_not_class,        /*F*/
+      regex_constants::escape_type_G,                /*G*/
+      regex_constants::escape_type_not_class,        /*H*/
+      regex_constants::escape_type_not_class,        /*I*/
+      regex_constants::escape_type_not_class,        /*J*/
+      regex_constants::escape_type_reset_start_mark, /*K*/
+      regex_constants::escape_type_not_class,        /*L*/
+      regex_constants::escape_type_not_class,        /*M*/
+      regex_constants::escape_type_named_char,       /*N*/
+      regex_constants::escape_type_not_class,        /*O*/
+      regex_constants::escape_type_not_property,     /*P*/
+      regex_constants::escape_type_Q,                /*Q*/
+      regex_constants::escape_type_line_ending,      /*R*/
+      regex_constants::escape_type_not_class,        /*S*/
+      regex_constants::escape_type_not_class,        /*T*/
+      regex_constants::escape_type_not_class,        /*U*/
+      regex_constants::escape_type_not_class,        /*V*/
+      regex_constants::escape_type_not_class,        /*W*/
+      regex_constants::escape_type_X,                /*X*/
+      regex_constants::escape_type_not_class,        /*Y*/
+      regex_constants::escape_type_Z,                /*Z*/
+      regex_constants::escape_type_identity,        /*[*/
+      regex_constants::escape_type_identity,        /*\*/
+      regex_constants::escape_type_identity,        /*]*/
+      regex_constants::escape_type_identity,        /*^*/
+      regex_constants::escape_type_identity,        /*_*/
+      regex_constants::escape_type_start_buffer,        /*`*/
+      regex_constants::escape_type_control_a,        /*a*/
+      regex_constants::escape_type_word_assert,        /*b*/
+      regex_constants::escape_type_ascii_control,        /*c*/
+      regex_constants::escape_type_class,        /*d*/
+      regex_constants::escape_type_e,        /*e*/
+      regex_constants::escape_type_control_f,       /*f*/
+      regex_constants::escape_type_extended_backref,  /*g*/
+      regex_constants::escape_type_class,        /*h*/
+      regex_constants::escape_type_class,        /*i*/
+      regex_constants::escape_type_class,        /*j*/
+      regex_constants::escape_type_extended_backref, /*k*/
+      regex_constants::escape_type_class,        /*l*/
+      regex_constants::escape_type_class,        /*m*/
+      regex_constants::escape_type_control_n,       /*n*/
+      regex_constants::escape_type_class,           /*o*/
+      regex_constants::escape_type_property,        /*p*/
+      regex_constants::escape_type_class,           /*q*/
+      regex_constants::escape_type_control_r,       /*r*/
+      regex_constants::escape_type_class,           /*s*/
+      regex_constants::escape_type_control_t,       /*t*/
+      regex_constants::escape_type_class,         /*u*/
+      regex_constants::escape_type_control_v,       /*v*/
+      regex_constants::escape_type_class,           /*w*/
+      regex_constants::escape_type_hex,             /*x*/
+      regex_constants::escape_type_class,           /*y*/
+      regex_constants::escape_type_end_buffer,      /*z*/
+      regex_constants::syntax_open_brace,           /*{*/
+      regex_constants::syntax_or,                   /*|*/
+      regex_constants::syntax_close_brace,          /*}*/
+      regex_constants::escape_type_identity,        /*~*/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+   };
+
+   return char_syntax[(unsigned char)c];
+}
+
+// is charT c a combining character?
+inline bool BOOST_REGEX_CALL is_combining_implementation(boost::uint_least16_t c)
+{
+   const boost::uint_least16_t combining_ranges[] = { 0x0300, 0x0361,
+                           0x0483, 0x0486,
+                           0x0903, 0x0903,
+                           0x093E, 0x0940,
+                           0x0949, 0x094C,
+                           0x0982, 0x0983,
+                           0x09BE, 0x09C0,
+                           0x09C7, 0x09CC,
+                           0x09D7, 0x09D7,
+                           0x0A3E, 0x0A40,
+                           0x0A83, 0x0A83,
+                           0x0ABE, 0x0AC0,
+                           0x0AC9, 0x0ACC,
+                           0x0B02, 0x0B03,
+                           0x0B3E, 0x0B3E,
+                           0x0B40, 0x0B40,
+                           0x0B47, 0x0B4C,
+                           0x0B57, 0x0B57,
+                           0x0B83, 0x0B83,
+                           0x0BBE, 0x0BBF,
+                           0x0BC1, 0x0BCC,
+                           0x0BD7, 0x0BD7,
+                           0x0C01, 0x0C03,
+                           0x0C41, 0x0C44,
+                           0x0C82, 0x0C83,
+                           0x0CBE, 0x0CBE,
+                           0x0CC0, 0x0CC4,
+                           0x0CC7, 0x0CCB,
+                           0x0CD5, 0x0CD6,
+                           0x0D02, 0x0D03,
+                           0x0D3E, 0x0D40,
+                           0x0D46, 0x0D4C,
+                           0x0D57, 0x0D57,
+                           0x0F7F, 0x0F7F,
+                           0x20D0, 0x20E1,
+                           0x3099, 0x309A,
+                           0xFE20, 0xFE23,
+                           0xffff, 0xffff, };
+
+   const boost::uint_least16_t* p = combining_ranges + 1;
+   while (*p < c) p += 2;
+   --p;
+   if ((c >= *p) && (c <= *(p + 1)))
+      return true;
+   return false;
+}
+
+template <class charT>
+inline bool is_combining(charT c)
+{
+   return (c <= static_cast<charT>(0)) ? false : ((c >= static_cast<charT>((std::numeric_limits<uint_least16_t>::max)())) ? false : is_combining_implementation(static_cast<unsigned short>(c)));
+}
+template <>
+inline bool is_combining<char>(char)
+{
+   return false;
+}
+template <>
+inline bool is_combining<signed char>(signed char)
+{
+   return false;
+}
+template <>
+inline bool is_combining<unsigned char>(unsigned char)
+{
+   return false;
+}
+#if !defined(__hpux) && !defined(__WINSCW__) // can't use WCHAR_MAX/MIN in pp-directives
+#ifdef _MSC_VER
+template<>
+inline bool is_combining<wchar_t>(wchar_t c)
+{
+   return is_combining_implementation(static_cast<unsigned short>(c));
+}
+#elif !defined(__DECCXX) && !defined(__osf__) && !defined(__OSF__) && defined(WCHAR_MIN) && (WCHAR_MIN == 0) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+#if defined(WCHAR_MAX) && (WCHAR_MAX <= USHRT_MAX)
+template<>
+inline bool is_combining<wchar_t>(wchar_t c)
+{
+   return is_combining_implementation(static_cast<unsigned short>(c));
+}
+#else
+template<>
+inline bool is_combining<wchar_t>(wchar_t c)
+{
+   return (c >= (std::numeric_limits<uint_least16_t>::max)()) ? false : is_combining_implementation(static_cast<unsigned short>(c));
+}
+#endif
+#endif
+#endif
+
+//
+// is a charT c a line separator?
+//
+template <class charT>
+inline bool is_separator(charT c)
+{
+   return BOOST_REGEX_MAKE_BOOL(
+      (c == static_cast<charT>('\n'))
+      || (c == static_cast<charT>('\r'))
+      || (c == static_cast<charT>('\f'))
+      || (static_cast<boost::uint16_t>(c) == 0x2028u)
+      || (static_cast<boost::uint16_t>(c) == 0x2029u)
+      || (static_cast<boost::uint16_t>(c) == 0x85u));
+}
+template <>
+inline bool is_separator<char>(char c)
+{
+   return BOOST_REGEX_MAKE_BOOL((c == '\n') || (c == '\r') || (c == '\f'));
+}
+
+//
+// get a default collating element:
+//
+inline std::string BOOST_REGEX_CALL lookup_default_collate_name(const std::string& name)
+{
+   //
+   // these are the POSIX collating names:
+   //
+   static const char* def_coll_names[] = {
+   "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "alert", "backspace", "tab", "newline",
+   "vertical-tab", "form-feed", "carriage-return", "SO", "SI", "DLE", "DC1", "DC2", "DC3", "DC4", "NAK",
+   "SYN", "ETB", "CAN", "EM", "SUB", "ESC", "IS4", "IS3", "IS2", "IS1", "space", "exclamation-mark",
+   "quotation-mark", "number-sign", "dollar-sign", "percent-sign", "ampersand", "apostrophe",
+   "left-parenthesis", "right-parenthesis", "asterisk", "plus-sign", "comma", "hyphen",
+   "period", "slash", "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
+   "colon", "semicolon", "less-than-sign", "equals-sign", "greater-than-sign",
+   "question-mark", "commercial-at", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P",
+   "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "left-square-bracket", "backslash",
+   "right-square-bracket", "circumflex", "underscore", "grave-accent", "a", "b", "c", "d", "e", "f",
+   "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "left-curly-bracket",
+   "vertical-line", "right-curly-bracket", "tilde", "DEL", "",
+   };
+
+   // these multi-character collating elements
+   // should keep most Western-European locales
+   // happy - we should really localise these a
+   // little more - but this will have to do for
+   // now:
+
+   static const char* def_multi_coll[] = {
+      "ae",
+      "Ae",
+      "AE",
+      "ch",
+      "Ch",
+      "CH",
+      "ll",
+      "Ll",
+      "LL",
+      "ss",
+      "Ss",
+      "SS",
+      "nj",
+      "Nj",
+      "NJ",
+      "dz",
+      "Dz",
+      "DZ",
+      "lj",
+      "Lj",
+      "LJ",
+      "",
+   };
+
+   unsigned int i = 0;
+   while (*def_coll_names[i])
+   {
+      if (def_coll_names[i] == name)
+      {
+         return std::string(1, char(i));
+      }
+      ++i;
+   }
+   i = 0;
+   while (*def_multi_coll[i])
+   {
+      if (def_multi_coll[i] == name)
+      {
+         return def_multi_coll[i];
+      }
+      ++i;
+   }
+   return std::string();
+}
+
+//
+// get the state_id of a character classification, the individual
+// traits classes then transform that state_id into a bitmask:
+//
+template <class charT>
+struct character_pointer_range
+{
+   const charT* p1;
+   const charT* p2;
+
+   bool operator < (const character_pointer_range& r)const
+   {
+      return std::lexicographical_compare(p1, p2, r.p1, r.p2);
+   }
+   bool operator == (const character_pointer_range& r)const
+   {
+      // Not only do we check that the ranges are of equal size before
+      // calling std::equal, but there is no other algorithm available:
+      // not even a non-standard MS one.  So forward to unchecked_equal
+      // in the MS case.
+      return ((p2 - p1) == (r.p2 - r.p1)) && BOOST_REGEX_DETAIL_NS::equal(p1, p2, r.p1);
+   }
+};
+template <class charT>
+int get_default_class_id(const charT* p1, const charT* p2)
+{
+   static const charT data[73] = {
+      'a', 'l', 'n', 'u', 'm',
+      'a', 'l', 'p', 'h', 'a',
+      'b', 'l', 'a', 'n', 'k',
+      'c', 'n', 't', 'r', 'l',
+      'd', 'i', 'g', 'i', 't',
+      'g', 'r', 'a', 'p', 'h',
+      'l', 'o', 'w', 'e', 'r',
+      'p', 'r', 'i', 'n', 't',
+      'p', 'u', 'n', 'c', 't',
+      's', 'p', 'a', 'c', 'e',
+      'u', 'n', 'i', 'c', 'o', 'd', 'e',
+      'u', 'p', 'p', 'e', 'r',
+      'v',
+      'w', 'o', 'r', 'd',
+      'x', 'd', 'i', 'g', 'i', 't',
+   };
+
+   static const character_pointer_range<charT> ranges[21] =
+   {
+      {data+0, data+5,}, // alnum
+      {data+5, data+10,}, // alpha
+      {data+10, data+15,}, // blank
+      {data+15, data+20,}, // cntrl
+      {data+20, data+21,}, // d
+      {data+20, data+25,}, // digit
+      {data+25, data+30,}, // graph
+      {data+29, data+30,}, // h
+      {data+30, data+31,}, // l
+      {data+30, data+35,}, // lower
+      {data+35, data+40,}, // print
+      {data+40, data+45,}, // punct
+      {data+45, data+46,}, // s
+      {data+45, data+50,}, // space
+      {data+57, data+58,}, // u
+      {data+50, data+57,}, // unicode
+      {data+57, data+62,}, // upper
+      {data+62, data+63,}, // v
+      {data+63, data+64,}, // w
+      {data+63, data+67,}, // word
+      {data+67, data+73,}, // xdigit
+   };
+   const character_pointer_range<charT>* ranges_begin = ranges;
+   const character_pointer_range<charT>* ranges_end = ranges + (sizeof(ranges)/sizeof(ranges[0]));
+
+   character_pointer_range<charT> t = { p1, p2, };
+   const character_pointer_range<charT>* p = std::lower_bound(ranges_begin, ranges_end, t);
+   if((p != ranges_end) && (t == *p))
+      return static_cast<int>(p - ranges);
+   return -1;
+}
+
+//
+// helper functions:
+//
+template <class charT>
+std::ptrdiff_t global_length(const charT* p)
+{
+   std::ptrdiff_t n = 0;
+   while(*p)
+   {
+      ++p;
+      ++n;
+   }
+   return n;
+}
+template<>
+inline std::ptrdiff_t global_length<char>(const char* p)
+{
+   return (std::strlen)(p);
+}
+#ifndef BOOST_NO_WREGEX
+template<>
+inline std::ptrdiff_t global_length<wchar_t>(const wchar_t* p)
+{
+   return (std::ptrdiff_t)(std::wcslen)(p);
+}
+#endif
+template <class charT>
+inline charT BOOST_REGEX_CALL global_lower(charT c)
+{
+   return c;
+}
+template <class charT>
+inline charT BOOST_REGEX_CALL global_upper(charT c)
+{
+   return c;
+}
+
+inline char BOOST_REGEX_CALL do_global_lower(char c)
+{
+   return static_cast<char>((std::tolower)((unsigned char)c));
+}
+
+inline char BOOST_REGEX_CALL do_global_upper(char c)
+{
+   return static_cast<char>((std::toupper)((unsigned char)c));
+}
+#ifndef BOOST_NO_WREGEX
+inline wchar_t BOOST_REGEX_CALL do_global_lower(wchar_t c)
+{
+   return (std::towlower)(c);
+}
+
+inline wchar_t BOOST_REGEX_CALL do_global_upper(wchar_t c)
+{
+   return (std::towupper)(c);
+}
+#endif
+//
+// This sucks: declare template specialisations of global_lower/global_upper
+// that just forward to the non-template implementation functions.  We do
+// this because there is one compiler (Compaq Tru64 C++) that doesn't seem
+// to differentiate between templates and non-template overloads....
+// what's more, the primary template, plus all overloads have to be
+// defined in the same translation unit (if one is inline they all must be)
+// otherwise the "local template instantiation" compiler option can pick
+// the wrong instantiation when linking:
+//
+template<> inline char BOOST_REGEX_CALL global_lower<char>(char c) { return do_global_lower(c); }
+template<> inline char BOOST_REGEX_CALL global_upper<char>(char c) { return do_global_upper(c); }
+#ifndef BOOST_NO_WREGEX
+template<> inline wchar_t BOOST_REGEX_CALL global_lower<wchar_t>(wchar_t c) { return do_global_lower(c); }
+template<> inline wchar_t BOOST_REGEX_CALL global_upper<wchar_t>(wchar_t c) { return do_global_upper(c); }
+#endif
+
+template <class charT>
+int global_value(charT c)
+{
+   static const charT zero = '0';
+   static const charT nine = '9';
+   static const charT a = 'a';
+   static const charT f = 'f';
+   static const charT A = 'A';
+   static const charT F = 'F';
+
+   if(c > f) return -1;
+   if(c >= a) return 10 + (c - a);
+   if(c > F) return -1;
+   if(c >= A) return 10 + (c - A);
+   if(c > nine) return -1;
+   if(c >= zero) return c - zero;
+   return -1;
+}
+template <class charT, class traits>
+boost::intmax_t global_toi(const charT*& p1, const charT* p2, int radix, const traits& t)
+{
+   (void)t; // warning suppression
+   boost::intmax_t limit = (std::numeric_limits<boost::intmax_t>::max)() / radix;
+   boost::intmax_t next_value = t.value(*p1, radix);
+   if((p1 == p2) || (next_value < 0) || (next_value >= radix))
+      return -1;
+   boost::intmax_t result = 0;
+   while(p1 != p2)
+   {
+      next_value = t.value(*p1, radix);
+      if((next_value < 0) || (next_value >= radix))
+         break;
+      result *= radix;
+      result += next_value;
+      ++p1;
+      if (result > limit)
+         return -1;
+   }
+   return result;
+}
+
+template <class charT>
+inline typename boost::enable_if_c<(sizeof(charT) > 1), const charT*>::type get_escape_R_string()
+{
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#  pragma warning(disable:4309 4245)
+#endif
+   static const charT e1[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
+      '|', '[', '\x0A', '\x0B', '\x0C', static_cast<charT>(0x85), static_cast<charT>(0x2028),
+      static_cast<charT>(0x2029), ']', ')', ')', '\0' };
+   static const charT e2[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
+      '|', '[', '\x0A', '\x0B', '\x0C', static_cast<charT>(0x85), ']', ')', ')', '\0' };
+
+   charT c = static_cast<charT>(0x2029u);
+   bool b = (static_cast<unsigned>(c) == 0x2029u);
+
+   return (b ? e1 : e2);
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+}
+
+template <class charT>
+inline typename boost::disable_if_c<(sizeof(charT) > 1), const charT*>::type get_escape_R_string()
+{
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#  pragma warning(disable:4309)
+#endif
+   static const charT e2[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
+      '|', '[', '\x0A', '\x0B', '\x0C', '\x85', ']', ')', ')', '\0' };
+   return e2;
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+}
+
+} // BOOST_REGEX_DETAIL_NS
+} // boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/regex_workaround.hpp

@@ -0,0 +1,237 @@
+/*
+ *
+ * Copyright (c) 1998-2005
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_workarounds.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares Misc workarounds.
+  */
+
+#ifndef BOOST_REGEX_WORKAROUND_HPP
+#define BOOST_REGEX_WORKAROUND_HPP
+
+#include <boost/config.hpp>
+#include <new>
+#include <cstring>
+#include <cstdlib>
+#include <cstddef>
+#include <cassert>
+#include <cstdio>
+#include <climits>
+#include <string>
+#include <stdexcept>
+#include <iterator>
+#include <algorithm>
+#include <iosfwd>
+#include <vector>
+#include <set>
+#include <map>
+#include <boost/limits.hpp>
+#include <boost/assert.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/scoped_ptr.hpp>
+#include <boost/scoped_array.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/mpl/bool_fwd.hpp>
+#include <boost/regex/config.hpp>
+#ifndef BOOST_NO_STD_LOCALE
+#   include <locale>
+#endif
+
+#if defined(BOOST_NO_STDC_NAMESPACE)
+namespace std{
+   using ::sprintf; using ::strcpy; using ::strcat; using ::strlen;
+}
+#endif
+
+namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
+#ifdef BOOST_NO_STD_DISTANCE
+template <class T>
+std::ptrdiff_t distance(const T& x, const T& y)
+{ return y - x; }
+#else
+using std::distance;
+#endif
+}}
+
+
+#ifdef BOOST_REGEX_NO_BOOL
+#  define BOOST_REGEX_MAKE_BOOL(x) static_cast<bool>((x) ? true : false)
+#else
+#  define BOOST_REGEX_MAKE_BOOL(x) static_cast<bool>(x)
+#endif
+
+/*****************************************************************************
+ *
+ *  Fix broken namespace support:
+ *
+ ****************************************************************************/
+
+#if defined(BOOST_NO_STDC_NAMESPACE) && defined(__cplusplus)
+
+namespace std{
+   using ::ptrdiff_t;
+   using ::size_t;
+   using ::abs;
+   using ::memset;
+   using ::memcpy;
+}
+
+#endif
+
+/*****************************************************************************
+ *
+ *  helper functions pointer_construct/pointer_destroy:
+ *
+ ****************************************************************************/
+
+#ifdef __cplusplus
+namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
+
+#ifdef BOOST_MSVC
+#pragma warning (push)
+#pragma warning (disable : 4100)
+#endif
+
+template <class T>
+inline void pointer_destroy(T* p)
+{ p->~T(); (void)p; }
+
+#ifdef BOOST_MSVC
+#pragma warning (pop)
+#endif
+
+template <class T>
+inline void pointer_construct(T* p, const T& t)
+{ new (p) T(t); }
+
+}} // namespaces
+#endif
+
+/*****************************************************************************
+ *
+ *  helper function copy:
+ *
+ ****************************************************************************/
+
+#ifdef __cplusplus
+namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
+#if BOOST_WORKAROUND(BOOST_MSVC,>=1400) && BOOST_WORKAROUND(BOOST_MSVC, <1600) && defined(_CPPLIB_VER) && defined(BOOST_DINKUMWARE_STDLIB) && !(defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION))
+   //
+   // MSVC 8 will either emit warnings or else refuse to compile
+   // code that makes perfectly legitimate use of std::copy, when
+   // the OutputIterator type is a user-defined class (apparently all user 
+   // defined iterators are "unsafe").  This code works around that:
+   //
+   template<class InputIterator, class OutputIterator>
+   inline OutputIterator copy(
+      InputIterator first, 
+      InputIterator last, 
+      OutputIterator dest
+   )
+   {
+      return stdext::unchecked_copy(first, last, dest);
+   }
+   template<class InputIterator1, class InputIterator2>
+   inline bool equal(
+      InputIterator1 first, 
+      InputIterator1 last, 
+      InputIterator2 with
+   )
+   {
+      return stdext::unchecked_equal(first, last, with);
+   }
+#elif BOOST_WORKAROUND(BOOST_MSVC, > 1500)
+   //
+   // MSVC 10 will either emit warnings or else refuse to compile
+   // code that makes perfectly legitimate use of std::copy, when
+   // the OutputIterator type is a user-defined class (apparently all user 
+   // defined iterators are "unsafe").  What's more Microsoft have removed their
+   // non-standard "unchecked" versions, even though their still in the MS
+   // documentation!! Work around this as best we can: 
+   //
+   template<class InputIterator, class OutputIterator>
+   inline OutputIterator copy(
+      InputIterator first, 
+      InputIterator last, 
+      OutputIterator dest
+   )
+   {
+      while(first != last)
+         *dest++ = *first++;
+      return dest;
+   }
+   template<class InputIterator1, class InputIterator2>
+   inline bool equal(
+      InputIterator1 first, 
+      InputIterator1 last, 
+      InputIterator2 with
+   )
+   {
+      while(first != last)
+         if(*first++ != *with++) return false;
+      return true;
+   }
+#else 
+   using std::copy; 
+   using std::equal; 
+#endif 
+#if BOOST_WORKAROUND(BOOST_MSVC,>=1400) && defined(__STDC_WANT_SECURE_LIB__) && __STDC_WANT_SECURE_LIB__ 
+
+   // use safe versions of strcpy etc:
+   using ::strcpy_s;
+   using ::strcat_s;
+#else
+   inline std::size_t strcpy_s(
+      char *strDestination,
+      std::size_t sizeInBytes,
+      const char *strSource 
+   )
+   {
+     std::size_t lenSourceWithNull = std::strlen(strSource) + 1;
+     if (lenSourceWithNull > sizeInBytes)
+         return 1;
+     std::memcpy(strDestination, strSource, lenSourceWithNull);
+      return 0;
+   }
+   inline std::size_t strcat_s(
+      char *strDestination,
+      std::size_t sizeInBytes,
+      const char *strSource 
+   )
+   {
+     std::size_t lenSourceWithNull = std::strlen(strSource) + 1;
+     std::size_t lenDestination = std::strlen(strDestination);
+     if (lenSourceWithNull + lenDestination > sizeInBytes)
+         return 1;
+     std::memcpy(strDestination + lenDestination, strSource, lenSourceWithNull);
+      return 0;
+   }
+
+#endif
+
+   inline void overflow_error_if_not_zero(std::size_t i)
+   {
+      if(i)
+      {
+         std::overflow_error e("String buffer too small");
+         boost::throw_exception(e);
+      }
+   }
+
+}} // namespaces
+
+#endif // __cplusplus
+
+#endif // include guard
+

lib/third_party/boost/regex/include/boost/regex/v4/states.hpp

@@ -0,0 +1,321 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         states.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares internal state machine structures.
+  */
+
+#ifndef BOOST_REGEX_V4_STATES_HPP
+#define BOOST_REGEX_V4_STATES_HPP
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+/*** mask_type *******************************************************
+Whenever we have a choice of two alternatives, we use an array of bytes
+to indicate which of the two alternatives it is possible to take for any
+given input character.  If mask_take is set, then we can take the next 
+state, and if mask_skip is set then we can take the alternative.
+***********************************************************************/
+enum mask_type
+{
+   mask_take = 1,
+   mask_skip = 2,
+   mask_init = 4,
+   mask_any = mask_skip | mask_take,
+   mask_all = mask_any
+};
+
+/*** helpers **********************************************************
+These helpers let us use function overload resolution to detect whether
+we have narrow or wide character strings:
+***********************************************************************/
+struct _narrow_type{};
+struct _wide_type{};
+template <class charT> struct is_byte;
+template<>             struct is_byte<char>         { typedef _narrow_type width_type; };
+template<>             struct is_byte<unsigned char>{ typedef _narrow_type width_type; };
+template<>             struct is_byte<signed char>  { typedef _narrow_type width_type; };
+template <class charT> struct is_byte               { typedef _wide_type width_type; };
+
+/*** enum syntax_element_type ******************************************
+Every record in the state machine falls into one of the following types:
+***********************************************************************/
+enum syntax_element_type
+{
+   // start of a marked sub-expression, or perl-style (?...) extension
+   syntax_element_startmark = 0,
+   // end of a marked sub-expression, or perl-style (?...) extension
+   syntax_element_endmark = syntax_element_startmark + 1,
+   // any sequence of literal characters
+   syntax_element_literal = syntax_element_endmark + 1,
+   // start of line assertion: ^
+   syntax_element_start_line = syntax_element_literal + 1,
+   // end of line assertion $
+   syntax_element_end_line = syntax_element_start_line + 1,
+   // match any character: .
+   syntax_element_wild = syntax_element_end_line + 1,
+   // end of expression: we have a match when we get here
+   syntax_element_match = syntax_element_wild + 1,
+   // perl style word boundary: \b
+   syntax_element_word_boundary = syntax_element_match + 1,
+   // perl style within word boundary: \B
+   syntax_element_within_word = syntax_element_word_boundary + 1,
+   // start of word assertion: \<
+   syntax_element_word_start = syntax_element_within_word + 1,
+   // end of word assertion: \>
+   syntax_element_word_end = syntax_element_word_start + 1,
+   // start of buffer assertion: \`
+   syntax_element_buffer_start = syntax_element_word_end + 1,
+   // end of buffer assertion: \'
+   syntax_element_buffer_end = syntax_element_buffer_start + 1,
+   // backreference to previously matched sub-expression
+   syntax_element_backref = syntax_element_buffer_end + 1,
+   // either a wide character set [..] or one with multicharacter collating elements:
+   syntax_element_long_set = syntax_element_backref + 1,
+   // narrow character set: [...]
+   syntax_element_set = syntax_element_long_set + 1,
+   // jump to a new state in the machine:
+   syntax_element_jump = syntax_element_set + 1,
+   // choose between two production states:
+   syntax_element_alt = syntax_element_jump + 1,
+   // a repeat
+   syntax_element_rep = syntax_element_alt + 1,
+   // match a combining character sequence
+   syntax_element_combining = syntax_element_rep + 1,
+   // perl style soft buffer end: \z
+   syntax_element_soft_buffer_end = syntax_element_combining + 1,
+   // perl style continuation: \G
+   syntax_element_restart_continue = syntax_element_soft_buffer_end + 1,
+   // single character repeats:
+   syntax_element_dot_rep = syntax_element_restart_continue + 1,
+   syntax_element_char_rep = syntax_element_dot_rep + 1,
+   syntax_element_short_set_rep = syntax_element_char_rep + 1,
+   syntax_element_long_set_rep = syntax_element_short_set_rep + 1,
+   // a backstep for lookbehind repeats:
+   syntax_element_backstep = syntax_element_long_set_rep + 1,
+   // an assertion that a mark was matched:
+   syntax_element_assert_backref = syntax_element_backstep + 1,
+   syntax_element_toggle_case = syntax_element_assert_backref + 1,
+   // a recursive expression:
+   syntax_element_recurse = syntax_element_toggle_case + 1,
+   // Verbs:
+   syntax_element_fail = syntax_element_recurse + 1,
+   syntax_element_accept = syntax_element_fail + 1,
+   syntax_element_commit = syntax_element_accept + 1,
+   syntax_element_then = syntax_element_commit + 1
+};
+
+#ifdef BOOST_REGEX_DEBUG
+// dwa 09/26/00 - This is needed to suppress warnings about an ambiguous conversion
+std::ostream& operator<<(std::ostream&, syntax_element_type);
+#endif
+
+struct re_syntax_base;
+
+/*** union offset_type ************************************************
+Points to another state in the machine.  During machine construction
+we use integral offsets, but these are converted to pointers before
+execution of the machine.
+***********************************************************************/
+union offset_type
+{
+   re_syntax_base*   p;
+   std::ptrdiff_t    i;
+};
+
+/*** struct re_syntax_base ********************************************
+Base class for all states in the machine.
+***********************************************************************/
+struct re_syntax_base
+{
+   syntax_element_type   type;         // what kind of state this is
+   offset_type           next;         // next state in the machine
+};
+
+/*** struct re_brace **************************************************
+A marked parenthesis.
+***********************************************************************/
+struct re_brace : public re_syntax_base
+{
+   // The index to match, can be zero (don't mark the sub-expression)
+   // or negative (for perl style (?...) extensions):
+   int index;
+   bool icase;
+};
+
+/*** struct re_dot **************************************************
+Match anything.
+***********************************************************************/
+enum
+{
+   dont_care = 1,
+   force_not_newline = 0,
+   force_newline = 2,
+
+   test_not_newline = 2,
+   test_newline = 3
+};
+struct re_dot : public re_syntax_base
+{
+   unsigned char mask;
+};
+
+/*** struct re_literal ************************************************
+A string of literals, following this structure will be an 
+array of characters: charT[length]
+***********************************************************************/
+struct re_literal : public re_syntax_base
+{
+   unsigned int length;
+};
+
+/*** struct re_case ************************************************
+Indicates whether we are moving to a case insensive block or not
+***********************************************************************/
+struct re_case : public re_syntax_base
+{
+   bool icase;
+};
+
+/*** struct re_set_long ***********************************************
+A wide character set of characters, following this structure will be
+an array of type charT:
+First csingles null-terminated strings
+Then 2 * cranges NULL terminated strings
+Then cequivalents NULL terminated strings
+***********************************************************************/
+template <class mask_type>
+struct re_set_long : public re_syntax_base
+{
+   unsigned int            csingles, cranges, cequivalents;
+   mask_type               cclasses;
+   mask_type               cnclasses;
+   bool                    isnot;
+   bool                    singleton;
+};
+
+/*** struct re_set ****************************************************
+A set of narrow-characters, matches any of _map which is none-zero
+***********************************************************************/
+struct re_set : public re_syntax_base
+{
+   unsigned char _map[1 << CHAR_BIT];
+};
+
+/*** struct re_jump ***************************************************
+Jump to a new location in the machine (not next).
+***********************************************************************/
+struct re_jump : public re_syntax_base
+{
+   offset_type     alt;                 // location to jump to
+};
+
+/*** struct re_alt ***************************************************
+Jump to a new location in the machine (possibly next).
+***********************************************************************/
+struct re_alt : public re_jump
+{
+   unsigned char   _map[1 << CHAR_BIT]; // which characters can take the jump
+   unsigned int    can_be_null;         // true if we match a NULL string
+};
+
+/*** struct re_repeat *************************************************
+Repeat a section of the machine
+***********************************************************************/
+struct re_repeat : public re_alt
+{
+   std::size_t   min, max;  // min and max allowable repeats
+   int           state_id;        // Unique identifier for this repeat
+   bool          leading;   // True if this repeat is at the start of the machine (lets us optimize some searches)
+   bool          greedy;    // True if this is a greedy repeat
+};
+
+/*** struct re_recurse ************************************************
+Recurse to a particular subexpression.
+**********************************************************************/
+struct re_recurse : public re_jump
+{
+   int state_id;             // identifier of first nested repeat within the recursion.
+};
+
+/*** struct re_commit *************************************************
+Used for the PRUNE, SKIP and COMMIT verbs which basically differ only in what happens
+if no match is found and we start searching forward.
+**********************************************************************/
+enum commit_type
+{
+   commit_prune,
+   commit_skip,
+   commit_commit
+};
+struct re_commit : public re_syntax_base
+{
+   commit_type action;
+};
+
+/*** enum re_jump_size_type *******************************************
+Provides compiled size of re_jump structure (allowing for trailing alignment).
+We provide this so we know how manybytes to insert when constructing the machine
+(The value of padding_mask is defined in regex_raw_buffer.hpp).
+***********************************************************************/
+enum re_jump_size_type
+{
+   re_jump_size = (sizeof(re_jump) + padding_mask) & ~(padding_mask),
+   re_repeater_size = (sizeof(re_repeat) + padding_mask) & ~(padding_mask),
+   re_alt_size = (sizeof(re_alt) + padding_mask) & ~(padding_mask)
+};
+
+/*** proc re_is_set_member *********************************************
+Forward declaration: we'll need this one later...
+***********************************************************************/
+
+template<class charT, class traits>
+struct regex_data;
+
+template <class iterator, class charT, class traits_type, class char_classT>
+iterator BOOST_REGEX_CALL re_is_set_member(iterator next, 
+                          iterator last, 
+                          const re_set_long<char_classT>* set_, 
+                          const regex_data<charT, traits_type>& e, bool icase);
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+

lib/third_party/boost/regex/include/boost/regex/v4/sub_match.hpp

@@ -0,0 +1,516 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         sub_match.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class sub_match.
+  */
+
+#ifndef BOOST_REGEX_V4_SUB_MATCH_HPP
+#define BOOST_REGEX_V4_SUB_MATCH_HPP
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace boost{
+
+template <class BidiIterator>
+struct sub_match : public std::pair<BidiIterator, BidiIterator>
+{
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidiIterator>::value_type       value_type;
+#if defined(BOOST_NO_STD_ITERATOR_TRAITS)
+   typedef          std::ptrdiff_t                                                   difference_type;
+#else
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidiIterator>::difference_type  difference_type;
+#endif
+   typedef          BidiIterator                                                     iterator_type;
+   typedef          BidiIterator                                                     iterator;
+   typedef          BidiIterator                                                     const_iterator;
+
+   bool matched;
+
+   sub_match() : std::pair<BidiIterator, BidiIterator>(), matched(false) {}
+   sub_match(BidiIterator i) : std::pair<BidiIterator, BidiIterator>(i, i), matched(false) {}
+#if !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\
+               && !BOOST_WORKAROUND(BOOST_BORLANDC, <= 0x0551)\
+               && !BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
+   template <class T, class A>
+   operator std::basic_string<value_type, T, A> ()const
+   {
+      return matched ? std::basic_string<value_type, T, A>(this->first, this->second) : std::basic_string<value_type, T, A>();
+   }
+#else
+   operator std::basic_string<value_type> ()const
+   {
+      return str();
+   }
+#endif
+   difference_type BOOST_REGEX_CALL length()const
+   {
+      difference_type n = matched ? ::boost::BOOST_REGEX_DETAIL_NS::distance((BidiIterator)this->first, (BidiIterator)this->second) : 0;
+      return n;
+   }
+   std::basic_string<value_type> str()const
+   {
+      std::basic_string<value_type> result;
+      if(matched)
+      {
+         std::size_t len = ::boost::BOOST_REGEX_DETAIL_NS::distance((BidiIterator)this->first, (BidiIterator)this->second);
+         result.reserve(len);
+         BidiIterator i = this->first;
+         while(i != this->second)
+         {
+            result.append(1, *i);
+            ++i;
+         }
+      }
+      return result;
+   }
+   int compare(const sub_match& s)const
+   {
+      if(matched != s.matched)
+         return static_cast<int>(matched) - static_cast<int>(s.matched);
+      return str().compare(s.str());
+   }
+   int compare(const std::basic_string<value_type>& s)const
+   {
+      return str().compare(s);
+   }
+   int compare(const value_type* p)const
+   {
+      return str().compare(p);
+   }
+
+   bool operator==(const sub_match& that)const
+   { return compare(that) == 0; }
+   bool BOOST_REGEX_CALL operator !=(const sub_match& that)const
+   { return compare(that) != 0; }
+   bool operator<(const sub_match& that)const
+   { return compare(that) < 0; }
+   bool operator>(const sub_match& that)const
+   { return compare(that) > 0; }
+   bool operator<=(const sub_match& that)const
+   { return compare(that) <= 0; }
+   bool operator>=(const sub_match& that)const
+   { return compare(that) >= 0; }
+
+#ifdef BOOST_REGEX_MATCH_EXTRA
+   typedef std::vector<sub_match<BidiIterator> > capture_sequence_type;
+
+   const capture_sequence_type& captures()const
+   {
+      if(!m_captures) 
+         m_captures.reset(new capture_sequence_type());
+      return *m_captures;
+   }
+   //
+   // Private implementation API: DO NOT USE!
+   //
+   capture_sequence_type& get_captures()const
+   {
+      if(!m_captures) 
+         m_captures.reset(new capture_sequence_type());
+      return *m_captures;
+   }
+
+private:
+   mutable boost::scoped_ptr<capture_sequence_type> m_captures;
+public:
+
+#endif
+   sub_match(const sub_match& that, bool 
+#ifdef BOOST_REGEX_MATCH_EXTRA
+      deep_copy
+#endif
+      = true
+      ) 
+      : std::pair<BidiIterator, BidiIterator>(that), 
+        matched(that.matched) 
+   {
+#ifdef BOOST_REGEX_MATCH_EXTRA
+      if(that.m_captures)
+         if(deep_copy)
+            m_captures.reset(new capture_sequence_type(*(that.m_captures)));
+#endif
+   }
+   sub_match& operator=(const sub_match& that)
+   {
+      this->first = that.first;
+      this->second = that.second;
+      matched = that.matched;
+#ifdef BOOST_REGEX_MATCH_EXTRA
+      if(that.m_captures)
+         get_captures() = *(that.m_captures);
+#endif
+      return *this;
+   }
+   //
+   // Make this type a range, for both Boost.Range, and C++11:
+   //
+   BidiIterator begin()const { return this->first; }
+   BidiIterator end()const { return this->second; }
+
+
+#ifdef BOOST_OLD_REGEX_H
+   //
+   // the following are deprecated, do not use!!
+   //
+   operator int()const;
+   operator unsigned int()const;
+   operator short()const
+   {
+      return (short)(int)(*this);
+   }
+   operator unsigned short()const
+   {
+      return (unsigned short)(unsigned int)(*this);
+   }
+#endif
+};
+
+typedef sub_match<const char*> csub_match;
+typedef sub_match<std::string::const_iterator> ssub_match;
+#ifndef BOOST_NO_WREGEX
+typedef sub_match<const wchar_t*> wcsub_match;
+typedef sub_match<std::wstring::const_iterator> wssub_match;
+#endif
+
+// comparison to std::basic_string<> part 1:
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator == (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return s.compare(m.str()) == 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator != (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return s.compare(m.str()) != 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator < (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                 const sub_match<RandomAccessIterator>& m)
+{ return s.compare(m.str()) < 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator <= (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return s.compare(m.str()) <= 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator >= (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return s.compare(m.str()) >= 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator > (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                 const sub_match<RandomAccessIterator>& m)
+{ return s.compare(m.str()) > 0; }
+// comparison to std::basic_string<> part 2:
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator == (const sub_match<RandomAccessIterator>& m,
+                  const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{ return m.str().compare(s) == 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator != (const sub_match<RandomAccessIterator>& m,
+                  const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{ return m.str().compare(s) != 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator < (const sub_match<RandomAccessIterator>& m,
+                  const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{ return m.str().compare(s) < 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator > (const sub_match<RandomAccessIterator>& m,
+                  const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{ return m.str().compare(s) > 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator <= (const sub_match<RandomAccessIterator>& m,
+                  const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{ return m.str().compare(s) <= 0; }
+template <class RandomAccessIterator, class traits, class Allocator>
+inline bool operator >= (const sub_match<RandomAccessIterator>& m,
+                  const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{ return m.str().compare(s) >= 0; }
+// comparison to const charT* part 1:
+template <class RandomAccessIterator>
+inline bool operator == (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s)
+{ return m.str().compare(s) == 0; }
+template <class RandomAccessIterator>
+inline bool operator != (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s)
+{ return m.str().compare(s) != 0; }
+template <class RandomAccessIterator>
+inline bool operator > (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s)
+{ return m.str().compare(s) > 0; }
+template <class RandomAccessIterator>
+inline bool operator < (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s)
+{ return m.str().compare(s) < 0; }
+template <class RandomAccessIterator>
+inline bool operator >= (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s)
+{ return m.str().compare(s) >= 0; }
+template <class RandomAccessIterator>
+inline bool operator <= (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s)
+{ return m.str().compare(s) <= 0; }
+// comparison to const charT* part 2:
+template <class RandomAccessIterator>
+inline bool operator == (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(s) == 0; }
+template <class RandomAccessIterator>
+inline bool operator != (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(s) != 0; }
+template <class RandomAccessIterator>
+inline bool operator < (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(s) > 0; }
+template <class RandomAccessIterator>
+inline bool operator > (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(s) < 0; }
+template <class RandomAccessIterator>
+inline bool operator <= (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(s) >= 0; }
+template <class RandomAccessIterator>
+inline bool operator >= (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(s) <= 0; }
+
+// comparison to const charT& part 1:
+template <class RandomAccessIterator>
+inline bool operator == (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{ return m.str().compare(0, m.length(), &s, 1) == 0; }
+template <class RandomAccessIterator>
+inline bool operator != (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{ return m.str().compare(0, m.length(), &s, 1) != 0; }
+template <class RandomAccessIterator>
+inline bool operator > (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{ return m.str().compare(0, m.length(), &s, 1) > 0; }
+template <class RandomAccessIterator>
+inline bool operator < (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{ return m.str().compare(0, m.length(), &s, 1) < 0; }
+template <class RandomAccessIterator>
+inline bool operator >= (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{ return m.str().compare(0, m.length(), &s, 1) >= 0; }
+template <class RandomAccessIterator>
+inline bool operator <= (const sub_match<RandomAccessIterator>& m,
+                  typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{ return m.str().compare(0, m.length(), &s, 1) <= 0; }
+// comparison to const charT* part 2:
+template <class RandomAccessIterator>
+inline bool operator == (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(0, m.length(), &s, 1) == 0; }
+template <class RandomAccessIterator>
+inline bool operator != (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(0, m.length(), &s, 1) != 0; }
+template <class RandomAccessIterator>
+inline bool operator < (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(0, m.length(), &s, 1) > 0; }
+template <class RandomAccessIterator>
+inline bool operator > (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(0, m.length(), &s, 1) < 0; }
+template <class RandomAccessIterator>
+inline bool operator <= (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(0, m.length(), &s, 1) >= 0; }
+template <class RandomAccessIterator>
+inline bool operator >= (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{ return m.str().compare(0, m.length(), &s, 1) <= 0; }
+
+// addition operators:
+template <class RandomAccessIterator, class traits, class Allocator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator> 
+operator + (const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s,
+                  const sub_match<RandomAccessIterator>& m)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator> result;
+   result.reserve(s.size() + m.length() + 1);
+   return result.append(s).append(m.first, m.second);
+}
+template <class RandomAccessIterator, class traits, class Allocator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator> 
+operator + (const sub_match<RandomAccessIterator>& m,
+            const std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator>& s)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type, traits, Allocator> result;
+   result.reserve(s.size() + m.length() + 1);
+   return result.append(m.first, m.second).append(s);
+}
+#if !(defined(__GNUC__) && defined(BOOST_NO_STD_LOCALE))
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> result;
+   result.reserve(std::char_traits<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type>::length(s) + m.length() + 1);
+   return result.append(s).append(m.first, m.second);
+}
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (const sub_match<RandomAccessIterator>& m,
+            typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const * s)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> result;
+   result.reserve(std::char_traits<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type>::length(s) + m.length() + 1);
+   return result.append(m.first, m.second).append(s);
+}
+#else
+// worwaround versions:
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const* s,
+                  const sub_match<RandomAccessIterator>& m)
+{
+   return s + m.str();
+}
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (const sub_match<RandomAccessIterator>& m,
+            typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const * s)
+{
+   return m.str() + s;
+}
+#endif
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s,
+                  const sub_match<RandomAccessIterator>& m)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> result;
+   result.reserve(m.length() + 2);
+   return result.append(1, s).append(m.first, m.second);
+}
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (const sub_match<RandomAccessIterator>& m,
+            typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type const& s)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> result;
+   result.reserve(m.length() + 2);
+   return result.append(m.first, m.second).append(1, s);
+}
+template <class RandomAccessIterator>
+inline std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> 
+operator + (const sub_match<RandomAccessIterator>& m1,
+            const sub_match<RandomAccessIterator>& m2)
+{
+   std::basic_string<typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<RandomAccessIterator>::value_type> result;
+   result.reserve(m1.length() + m2.length() + 1);
+   return result.append(m1.first, m1.second).append(m2.first, m2.second);
+}
+#ifndef BOOST_NO_STD_LOCALE
+template <class charT, class traits, class RandomAccessIterator>
+std::basic_ostream<charT, traits>&
+   operator << (std::basic_ostream<charT, traits>& os,
+                const sub_match<RandomAccessIterator>& s)
+{
+   return (os << s.str());
+}
+#else
+template <class RandomAccessIterator>
+std::ostream& operator << (std::ostream& os,
+                           const sub_match<RandomAccessIterator>& s)
+{
+   return (os << s.str());
+}
+#endif
+
+#ifdef BOOST_OLD_REGEX_H
+namespace BOOST_REGEX_DETAIL_NS{
+template <class BidiIterator, class charT>
+int do_toi(BidiIterator i, BidiIterator j, char c, int radix)
+{
+   std::string s(i, j);
+   char* p;
+   int result = std::strtol(s.c_str(), &p, radix);
+   if(*p)raise_regex_exception("Bad sub-expression");
+   return result;
+}
+
+//
+// helper:
+template <class I, class charT>
+int do_toi(I& i, I j, charT c)
+{
+   int result = 0;
+   while((i != j) && (isdigit(*i)))
+   {
+      result = result*10 + (*i - '0');
+      ++i;
+   }
+   return result;
+}
+}
+
+
+template <class BidiIterator>
+sub_match<BidiIterator>::operator int()const
+{
+   BidiIterator i = first;
+   BidiIterator j = second;
+   if(i == j)raise_regex_exception("Bad sub-expression");
+   int neg = 1;
+   if((i != j) && (*i == '-'))
+   {
+      neg = -1;
+      ++i;
+   }
+   neg *= BOOST_REGEX_DETAIL_NS::do_toi(i, j, *i);
+   if(i != j)raise_regex_exception("Bad sub-expression");
+   return neg;
+}
+template <class BidiIterator>
+sub_match<BidiIterator>::operator unsigned int()const
+{
+   BidiIterator i = first;
+   BidiIterator j = second;
+   if(i == j)
+      raise_regex_exception("Bad sub-expression");
+   return BOOST_REGEX_DETAIL_NS::do_toi(i, j, *first);
+}
+#endif
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v4/syntax_type.hpp

@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         syntax_type.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression synatx type enumerator.
+  */
+
+#ifndef BOOST_REGEX_SYNTAX_TYPE_HPP
+#define BOOST_REGEX_SYNTAX_TYPE_HPP
+
+namespace boost{
+namespace regex_constants{
+
+typedef unsigned char syntax_type;
+
+//
+// values chosen are binary compatible with previous version:
+//
+static const syntax_type syntax_char = 0;
+static const syntax_type syntax_open_mark = 1;
+static const syntax_type syntax_close_mark = 2;
+static const syntax_type syntax_dollar = 3;
+static const syntax_type syntax_caret = 4;
+static const syntax_type syntax_dot = 5;
+static const syntax_type syntax_star = 6;
+static const syntax_type syntax_plus = 7;
+static const syntax_type syntax_question = 8;
+static const syntax_type syntax_open_set = 9;
+static const syntax_type syntax_close_set = 10;
+static const syntax_type syntax_or = 11;
+static const syntax_type syntax_escape = 12;
+static const syntax_type syntax_dash = 14;
+static const syntax_type syntax_open_brace = 15;
+static const syntax_type syntax_close_brace = 16;
+static const syntax_type syntax_digit = 17;
+static const syntax_type syntax_comma = 27;
+static const syntax_type syntax_equal = 37;
+static const syntax_type syntax_colon = 36;
+static const syntax_type syntax_not = 53;
+
+// extensions:
+
+static const syntax_type syntax_hash = 13;
+static const syntax_type syntax_newline = 26;
+
+// escapes:
+
+typedef syntax_type escape_syntax_type;
+
+static const escape_syntax_type escape_type_word_assert = 18;
+static const escape_syntax_type escape_type_not_word_assert = 19;
+static const escape_syntax_type escape_type_control_f = 29;
+static const escape_syntax_type escape_type_control_n = 30;
+static const escape_syntax_type escape_type_control_r = 31;
+static const escape_syntax_type escape_type_control_t = 32;
+static const escape_syntax_type escape_type_control_v = 33;
+static const escape_syntax_type escape_type_ascii_control = 35;
+static const escape_syntax_type escape_type_hex = 34;
+static const escape_syntax_type escape_type_unicode = 0; // not used
+static const escape_syntax_type escape_type_identity = 0; // not used
+static const escape_syntax_type escape_type_backref = syntax_digit;
+static const escape_syntax_type escape_type_decimal = syntax_digit; // not used
+static const escape_syntax_type escape_type_class = 22; 
+static const escape_syntax_type escape_type_not_class = 23; 
+
+// extensions:
+
+static const escape_syntax_type escape_type_left_word = 20;
+static const escape_syntax_type escape_type_right_word = 21;
+static const escape_syntax_type escape_type_start_buffer = 24;                 // for \`
+static const escape_syntax_type escape_type_end_buffer = 25;                   // for \'
+static const escape_syntax_type escape_type_control_a = 28;                    // for \a
+static const escape_syntax_type escape_type_e = 38;                            // for \e
+static const escape_syntax_type escape_type_E = 47;                            // for \Q\E
+static const escape_syntax_type escape_type_Q = 48;                            // for \Q\E
+static const escape_syntax_type escape_type_X = 49;                            // for \X
+static const escape_syntax_type escape_type_C = 50;                            // for \C
+static const escape_syntax_type escape_type_Z = 51;                            // for \Z
+static const escape_syntax_type escape_type_G = 52;                            // for \G
+
+static const escape_syntax_type escape_type_property = 54;                     // for \p
+static const escape_syntax_type escape_type_not_property = 55;                 // for \P
+static const escape_syntax_type escape_type_named_char = 56;                   // for \N
+static const escape_syntax_type escape_type_extended_backref = 57;             // for \g
+static const escape_syntax_type escape_type_reset_start_mark = 58;             // for \K
+static const escape_syntax_type escape_type_line_ending = 59;                  // for \R
+
+static const escape_syntax_type syntax_max = 60;
+
+}
+}
+
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v4/u32regex_iterator.hpp

@@ -0,0 +1,185 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         u32regex_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides u32regex_iterator implementation.
+  */
+
+#ifndef BOOST_REGEX_V4_U32REGEX_ITERATOR_HPP
+#define BOOST_REGEX_V4_U32REGEX_ITERATOR_HPP
+
+namespace boost{
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+
+template <class BidirectionalIterator>
+class u32regex_iterator_implementation 
+{
+   typedef u32regex regex_type;
+
+   match_results<BidirectionalIterator> what;  // current match
+   BidirectionalIterator                base;  // start of sequence
+   BidirectionalIterator                end;   // end of sequence
+   const regex_type                     re;   // the expression
+   match_flag_type                      flags; // flags for matching
+
+public:
+   u32regex_iterator_implementation(const regex_type* p, BidirectionalIterator last, match_flag_type f)
+      : base(), end(last), re(*p), flags(f){}
+   bool init(BidirectionalIterator first)
+   {
+      base = first;
+      return u32regex_search(first, end, what, re, flags, base);
+   }
+   bool compare(const u32regex_iterator_implementation& that)
+   {
+      if(this == &that) return true;
+      return (&re.get_data() == &that.re.get_data()) && (end == that.end) && (flags == that.flags) && (what[0].first == that.what[0].first) && (what[0].second == that.what[0].second);
+   }
+   const match_results<BidirectionalIterator>& get()
+   { return what; }
+   bool next()
+   {
+      //if(what.prefix().first != what[0].second)
+      //   flags |= match_prev_avail;
+      BidirectionalIterator next_start = what[0].second;
+      match_flag_type f(flags);
+      if(!what.length())
+         f |= regex_constants::match_not_initial_null;
+      //if(base != next_start)
+      //   f |= regex_constants::match_not_bob;
+      bool result = u32regex_search(next_start, end, what, re, f, base);
+      if(result)
+         what.set_base(base);
+      return result;
+   }
+private:
+   u32regex_iterator_implementation& operator=(const u32regex_iterator_implementation&);
+};
+
+template <class BidirectionalIterator>
+class u32regex_iterator 
+{
+private:
+   typedef u32regex_iterator_implementation<BidirectionalIterator> impl;
+   typedef shared_ptr<impl> pimpl;
+public:
+   typedef          u32regex                                                regex_type;
+   typedef          match_results<BidirectionalIterator>                    value_type;
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidirectionalIterator>::difference_type 
+                                                                            difference_type;
+   typedef          const value_type*                                       pointer;
+   typedef          const value_type&                                       reference; 
+   typedef          std::forward_iterator_tag                               iterator_category;
+   
+   u32regex_iterator(){}
+   u32regex_iterator(BidirectionalIterator a, BidirectionalIterator b, 
+                  const regex_type& re, 
+                  match_flag_type m = match_default)
+                  : pdata(new impl(&re, b, m))
+   {
+      if(!pdata->init(a))
+      {
+         pdata.reset();
+      }
+   }
+   u32regex_iterator(const u32regex_iterator& that)
+      : pdata(that.pdata) {}
+   u32regex_iterator& operator=(const u32regex_iterator& that)
+   {
+      pdata = that.pdata;
+      return *this;
+   }
+   bool operator==(const u32regex_iterator& that)const
+   { 
+      if((pdata.get() == 0) || (that.pdata.get() == 0))
+         return pdata.get() == that.pdata.get();
+      return pdata->compare(*(that.pdata.get())); 
+   }
+   bool operator!=(const u32regex_iterator& that)const
+   { return !(*this == that); }
+   const value_type& operator*()const
+   { return pdata->get(); }
+   const value_type* operator->()const
+   { return &(pdata->get()); }
+   u32regex_iterator& operator++()
+   {
+      cow();
+      if(0 == pdata->next())
+      {
+         pdata.reset();
+      }
+      return *this;
+   }
+   u32regex_iterator operator++(int)
+   {
+      u32regex_iterator result(*this);
+      ++(*this);
+      return result;
+   }
+private:
+
+   pimpl pdata;
+
+   void cow()
+   {
+      // copy-on-write
+      if(pdata.get() && !pdata.unique())
+      {
+         pdata.reset(new impl(*(pdata.get())));
+      }
+   }
+};
+
+typedef u32regex_iterator<const char*> utf8regex_iterator;
+typedef u32regex_iterator<const UChar*> utf16regex_iterator;
+typedef u32regex_iterator<const UChar32*> utf32regex_iterator;
+
+inline u32regex_iterator<const char*> make_u32regex_iterator(const char* p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_iterator<const char*>(p, p+std::strlen(p), e, m);
+}
+#ifndef BOOST_NO_WREGEX
+inline u32regex_iterator<const wchar_t*> make_u32regex_iterator(const wchar_t* p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_iterator<const wchar_t*>(p, p+std::wcslen(p), e, m);
+}
+#endif
+#if !defined(BOOST_REGEX_UCHAR_IS_WCHAR_T)
+inline u32regex_iterator<const UChar*> make_u32regex_iterator(const UChar* p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_iterator<const UChar*>(p, p+u_strlen(p), e, m);
+}
+#endif
+template <class charT, class Traits, class Alloc>
+inline u32regex_iterator<typename std::basic_string<charT, Traits, Alloc>::const_iterator> make_u32regex_iterator(const std::basic_string<charT, Traits, Alloc>& p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   typedef typename std::basic_string<charT, Traits, Alloc>::const_iterator iter_type;
+   return u32regex_iterator<iter_type>(p.begin(), p.end(), e, m);
+}
+inline u32regex_iterator<const UChar*> make_u32regex_iterator(const U_NAMESPACE_QUALIFIER UnicodeString& s, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_iterator<const UChar*>(s.getBuffer(), s.getBuffer() + s.length(), e, m);
+}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+} // namespace boost
+
+#endif // BOOST_REGEX_V4_REGEX_ITERATOR_HPP
+

lib/third_party/boost/regex/include/boost/regex/v4/u32regex_token_iterator.hpp

@@ -0,0 +1,360 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         u32regex_token_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides u32regex_token_iterator implementation.
+  */
+
+#ifndef BOOST_REGEX_V4_U32REGEX_TOKEN_ITERATOR_HPP
+#define BOOST_REGEX_V4_U32REGEX_TOKEN_ITERATOR_HPP
+
+#if (BOOST_WORKAROUND(BOOST_BORLANDC, >= 0x560) && BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x570)))\
+      || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
+//
+// Borland C++ Builder 6, and Visual C++ 6,
+// can't cope with the array template constructor
+// so we have a template member that will accept any type as 
+// argument, and then assert that is really is an array:
+//
+#include <boost/static_assert.hpp>
+#include <boost/type_traits/is_array.hpp>
+#endif
+
+namespace boost{
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#  pragma warning(disable:4700)
+#endif
+
+template <class BidirectionalIterator>
+class u32regex_token_iterator_implementation 
+{
+   typedef u32regex                              regex_type;
+   typedef sub_match<BidirectionalIterator>      value_type;
+
+   match_results<BidirectionalIterator> what;   // current match
+   BidirectionalIterator                end;    // end of search area
+   BidirectionalIterator                base;   // start of search area
+   const regex_type                     re;     // the expression
+   match_flag_type                      flags;  // match flags
+   value_type                           result; // the current string result
+   int                                  N;      // the current sub-expression being enumerated
+   std::vector<int>                     subs;   // the sub-expressions to enumerate
+
+public:
+   u32regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, int sub, match_flag_type f)
+      : end(last), re(*p), flags(f){ subs.push_back(sub); }
+   u32regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const std::vector<int>& v, match_flag_type f)
+      : end(last), re(*p), flags(f), subs(v){}
+#if (BOOST_WORKAROUND(__BORLANDC__, >= 0x560) && BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x570)))\
+      || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) \
+      || BOOST_WORKAROUND(__HP_aCC, < 60700)
+   template <class T>
+   u32regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const T& submatches, match_flag_type f)
+      : end(last), re(*p), flags(f)
+   {
+      // assert that T really is an array:
+      BOOST_STATIC_ASSERT(::boost::is_array<T>::value);
+      const std::size_t array_size = sizeof(T) / sizeof(submatches[0]);
+      for(std::size_t i = 0; i < array_size; ++i)
+      {
+         subs.push_back(submatches[i]);
+      }
+   }
+#else
+   template <std::size_t CN>
+   u32regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const int (&submatches)[CN], match_flag_type f)
+      : end(last), re(*p), flags(f)
+   {
+      for(std::size_t i = 0; i < CN; ++i)
+      {
+         subs.push_back(submatches[i]);
+      }
+   }
+#endif
+
+   bool init(BidirectionalIterator first)
+   {
+      base = first;
+      N = 0;
+      if(u32regex_search(first, end, what, re, flags, base) == true)
+      {
+         N = 0;
+         result = ((subs[N] == -1) ? what.prefix() : what[(int)subs[N]]);
+         return true;
+      }
+      else if((subs[N] == -1) && (first != end))
+      {
+         result.first = first;
+         result.second = end;
+         result.matched = (first != end);
+         N = -1;
+         return true;
+      }
+      return false;
+   }
+   bool compare(const u32regex_token_iterator_implementation& that)
+   {
+      if(this == &that) return true;
+      return (&re.get_data() == &that.re.get_data()) 
+         && (end == that.end) 
+         && (flags == that.flags) 
+         && (N == that.N) 
+         && (what[0].first == that.what[0].first) 
+         && (what[0].second == that.what[0].second);
+   }
+   const value_type& get()
+   { return result; }
+   bool next()
+   {
+      if(N == -1)
+         return false;
+      if(N+1 < (int)subs.size())
+      {
+         ++N;
+         result =((subs[N] == -1) ? what.prefix() : what[subs[N]]);
+         return true;
+      }
+      //if(what.prefix().first != what[0].second)
+      //   flags |= match_prev_avail | regex_constants::match_not_bob;
+      BidirectionalIterator last_end(what[0].second);
+      if(u32regex_search(last_end, end, what, re, ((what[0].first == what[0].second) ? flags | regex_constants::match_not_initial_null : flags), base))
+      {
+         N =0;
+         result =((subs[N] == -1) ? what.prefix() : what[subs[N]]);
+         return true;
+      }
+      else if((last_end != end) && (subs[0] == -1))
+      {
+         N =-1;
+         result.first = last_end;
+         result.second = end;
+         result.matched = (last_end != end);
+         return true;
+      }
+      return false;
+   }
+private:
+   u32regex_token_iterator_implementation& operator=(const u32regex_token_iterator_implementation&);
+};
+
+template <class BidirectionalIterator>
+class u32regex_token_iterator 
+{
+private:
+   typedef u32regex_token_iterator_implementation<BidirectionalIterator> impl;
+   typedef shared_ptr<impl> pimpl;
+public:
+   typedef          u32regex                                                regex_type;
+   typedef          sub_match<BidirectionalIterator>                        value_type;
+   typedef typename BOOST_REGEX_DETAIL_NS::regex_iterator_traits<BidirectionalIterator>::difference_type 
+                                                                            difference_type;
+   typedef          const value_type*                                       pointer;
+   typedef          const value_type&                                       reference; 
+   typedef          std::forward_iterator_tag                               iterator_category;
+   
+   u32regex_token_iterator(){}
+   u32regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, 
+                        int submatch = 0, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatch, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+   u32regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, 
+                        const std::vector<int>& submatches, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+#if (BOOST_WORKAROUND(__BORLANDC__, >= 0x560) && BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x570)))\
+      || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) \
+      || BOOST_WORKAROUND(__HP_aCC, < 60700)
+   template <class T>
+   u32regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re,
+                        const T& submatches, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+#else
+   template <std::size_t N>
+   u32regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re,
+                        const int (&submatches)[N], match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+#endif
+   u32regex_token_iterator(const u32regex_token_iterator& that)
+      : pdata(that.pdata) {}
+   u32regex_token_iterator& operator=(const u32regex_token_iterator& that)
+   {
+      pdata = that.pdata;
+      return *this;
+   }
+   bool operator==(const u32regex_token_iterator& that)const
+   { 
+      if((pdata.get() == 0) || (that.pdata.get() == 0))
+         return pdata.get() == that.pdata.get();
+      return pdata->compare(*(that.pdata.get())); 
+   }
+   bool operator!=(const u32regex_token_iterator& that)const
+   { return !(*this == that); }
+   const value_type& operator*()const
+   { return pdata->get(); }
+   const value_type* operator->()const
+   { return &(pdata->get()); }
+   u32regex_token_iterator& operator++()
+   {
+      cow();
+      if(0 == pdata->next())
+      {
+         pdata.reset();
+      }
+      return *this;
+   }
+   u32regex_token_iterator operator++(int)
+   {
+      u32regex_token_iterator result(*this);
+      ++(*this);
+      return result;
+   }
+private:
+
+   pimpl pdata;
+
+   void cow()
+   {
+      // copy-on-write
+      if(pdata.get() && !pdata.unique())
+      {
+         pdata.reset(new impl(*(pdata.get())));
+      }
+   }
+};
+
+typedef u32regex_token_iterator<const char*> utf8regex_token_iterator;
+typedef u32regex_token_iterator<const UChar*> utf16regex_token_iterator;
+typedef u32regex_token_iterator<const UChar32*> utf32regex_token_iterator;
+
+// construction from an integral sub_match state_id:
+inline u32regex_token_iterator<const char*> make_u32regex_token_iterator(const char* p, const u32regex& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const char*>(p, p+std::strlen(p), e, submatch, m);
+}
+#ifndef BOOST_NO_WREGEX
+inline u32regex_token_iterator<const wchar_t*> make_u32regex_token_iterator(const wchar_t* p, const u32regex& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const wchar_t*>(p, p+std::wcslen(p), e, submatch, m);
+}
+#endif
+#if !defined(BOOST_REGEX_UCHAR_IS_WCHAR_T)
+inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const UChar* p, const u32regex& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const UChar*>(p, p+u_strlen(p), e, submatch, m);
+}
+#endif
+template <class charT, class Traits, class Alloc>
+inline u32regex_token_iterator<typename std::basic_string<charT, Traits, Alloc>::const_iterator> make_u32regex_token_iterator(const std::basic_string<charT, Traits, Alloc>& p, const u32regex& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   typedef typename std::basic_string<charT, Traits, Alloc>::const_iterator iter_type;
+   return u32regex_token_iterator<iter_type>(p.begin(), p.end(), e, submatch, m);
+}
+inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const U_NAMESPACE_QUALIFIER UnicodeString& s, const u32regex& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const UChar*>(s.getBuffer(), s.getBuffer() + s.length(), e, submatch, m);
+}
+
+// construction from a reference to an array:
+template <std::size_t N>
+inline u32regex_token_iterator<const char*> make_u32regex_token_iterator(const char* p, const u32regex& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const char*>(p, p+std::strlen(p), e, submatch, m);
+}
+#ifndef BOOST_NO_WREGEX
+template <std::size_t N>
+inline u32regex_token_iterator<const wchar_t*> make_u32regex_token_iterator(const wchar_t* p, const u32regex& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const wchar_t*>(p, p+std::wcslen(p), e, submatch, m);
+}
+#endif
+#if !defined(BOOST_REGEX_UCHAR_IS_WCHAR_T)
+template <std::size_t N>
+inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const UChar* p, const u32regex& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const UChar*>(p, p+u_strlen(p), e, submatch, m);
+}
+#endif
+template <class charT, class Traits, class Alloc, std::size_t N>
+inline u32regex_token_iterator<typename std::basic_string<charT, Traits, Alloc>::const_iterator> make_u32regex_token_iterator(const std::basic_string<charT, Traits, Alloc>& p, const u32regex& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   typedef typename std::basic_string<charT, Traits, Alloc>::const_iterator iter_type;
+   return u32regex_token_iterator<iter_type>(p.begin(), p.end(), e, submatch, m);
+}
+template <std::size_t N>
+inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const U_NAMESPACE_QUALIFIER UnicodeString& s, const u32regex& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const UChar*>(s.getBuffer(), s.getBuffer() + s.length(), e, submatch, m);
+}
+
+// construction from a vector of sub_match state_id's:
+inline u32regex_token_iterator<const char*> make_u32regex_token_iterator(const char* p, const u32regex& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const char*>(p, p+std::strlen(p), e, submatch, m);
+}
+#ifndef BOOST_NO_WREGEX
+inline u32regex_token_iterator<const wchar_t*> make_u32regex_token_iterator(const wchar_t* p, const u32regex& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const wchar_t*>(p, p+std::wcslen(p), e, submatch, m);
+}
+#endif
+#if !defined(U_WCHAR_IS_UTF16) && (U_SIZEOF_WCHAR_T != 2)
+inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const UChar* p, const u32regex& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const UChar*>(p, p+u_strlen(p), e, submatch, m);
+}
+#endif
+template <class charT, class Traits, class Alloc>
+inline u32regex_token_iterator<typename std::basic_string<charT, Traits, Alloc>::const_iterator> make_u32regex_token_iterator(const std::basic_string<charT, Traits, Alloc>& p, const u32regex& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   typedef typename std::basic_string<charT, Traits, Alloc>::const_iterator iter_type;
+   return u32regex_token_iterator<iter_type>(p.begin(), p.end(), e, submatch, m);
+}
+inline u32regex_token_iterator<const UChar*> make_u32regex_token_iterator(const U_NAMESPACE_QUALIFIER UnicodeString& s, const u32regex& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return u32regex_token_iterator<const UChar*>(s.getBuffer(), s.getBuffer() + s.length(), e, submatch, m);
+}
+
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+} // namespace boost
+
+#endif // BOOST_REGEX_V4_REGEX_TOKEN_ITERATOR_HPP
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v4/unicode_iterator.hpp

@@ -0,0 +1,871 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         unicode_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Iterator adapters for converting between different Unicode encodings.
+  */
+
+/****************************************************************************
+
+Contents:
+~~~~~~~~~
+
+1) Read Only, Input Adapters:
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+template <class BaseIterator, class U8Type = ::boost::uint8_t>
+class u32_to_u8_iterator;
+
+Adapts sequence of UTF-32 code points to "look like" a sequence of UTF-8.
+
+template <class BaseIterator, class U32Type = ::boost::uint32_t>
+class u8_to_u32_iterator;
+
+Adapts sequence of UTF-8 code points to "look like" a sequence of UTF-32.
+
+template <class BaseIterator, class U16Type = ::boost::uint16_t>
+class u32_to_u16_iterator;
+
+Adapts sequence of UTF-32 code points to "look like" a sequence of UTF-16.
+
+template <class BaseIterator, class U32Type = ::boost::uint32_t>
+class u16_to_u32_iterator;
+
+Adapts sequence of UTF-16 code points to "look like" a sequence of UTF-32.
+
+2) Single pass output iterator adapters:
+
+template <class BaseIterator>
+class utf8_output_iterator;
+
+Accepts UTF-32 code points and forwards them on as UTF-8 code points.
+
+template <class BaseIterator>
+class utf16_output_iterator;
+
+Accepts UTF-32 code points and forwards them on as UTF-16 code points.
+
+****************************************************************************/
+
+#ifndef BOOST_REGEX_V4_UNICODE_ITERATOR_HPP
+#define BOOST_REGEX_V4_UNICODE_ITERATOR_HPP
+#include <boost/cstdint.hpp>
+#include <boost/regex/config.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/throw_exception.hpp>
+#include <stdexcept>
+#ifndef BOOST_NO_STD_LOCALE
+#include <sstream>
+#include <ios>
+#endif
+#include <limits.h> // CHAR_BIT
+
+#ifdef BOOST_REGEX_CXX03
+
+#else
+#endif
+
+namespace boost{
+
+namespace detail{
+
+static const ::boost::uint16_t high_surrogate_base = 0xD7C0u;
+static const ::boost::uint16_t low_surrogate_base = 0xDC00u;
+static const ::boost::uint32_t ten_bit_mask = 0x3FFu;
+
+inline bool is_high_surrogate(::boost::uint16_t v)
+{
+   return (v & 0xFFFFFC00u) == 0xd800u;
+}
+inline bool is_low_surrogate(::boost::uint16_t v)
+{
+   return (v & 0xFFFFFC00u) == 0xdc00u;
+}
+template <class T>
+inline bool is_surrogate(T v)
+{
+   return (v & 0xFFFFF800u) == 0xd800;
+}
+
+inline unsigned utf8_byte_count(boost::uint8_t c)
+{
+   // if the most significant bit with a zero in it is in position
+   // 8-N then there are N bytes in this UTF-8 sequence:
+   boost::uint8_t mask = 0x80u;
+   unsigned result = 0;
+   while(c & mask)
+   {
+      ++result;
+      mask >>= 1;
+   }
+   return (result == 0) ? 1 : ((result > 4) ? 4 : result);
+}
+
+inline unsigned utf8_trailing_byte_count(boost::uint8_t c)
+{
+   return utf8_byte_count(c) - 1;
+}
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable:4100)
+#endif
+#ifndef BOOST_NO_EXCEPTIONS
+BOOST_NORETURN
+#endif
+inline void invalid_utf32_code_point(::boost::uint32_t val)
+{
+#ifndef BOOST_NO_STD_LOCALE
+   std::stringstream ss;
+   ss << "Invalid UTF-32 code point U+" << std::showbase << std::hex << val << " encountered while trying to encode UTF-16 sequence";
+   std::out_of_range e(ss.str());
+#else
+   std::out_of_range e("Invalid UTF-32 code point encountered while trying to encode UTF-16 sequence");
+#endif
+   boost::throw_exception(e);
+}
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+
+} // namespace detail
+
+template <class BaseIterator, class U16Type = ::boost::uint16_t>
+class u32_to_u16_iterator
+{
+#if !defined(BOOST_NO_STD_ITERATOR_TRAITS)
+   typedef typename std::iterator_traits<BaseIterator>::value_type base_value_type;
+
+   BOOST_STATIC_ASSERT(sizeof(base_value_type)*CHAR_BIT == 32);
+   BOOST_STATIC_ASSERT(sizeof(U16Type)*CHAR_BIT == 16);
+#endif
+
+public:
+   typedef std::ptrdiff_t     difference_type;
+   typedef U16Type            value_type;
+   typedef value_type const*  pointer;
+   typedef value_type const   reference;
+   typedef std::bidirectional_iterator_tag iterator_category;
+
+   reference operator*()const
+   {
+      if(m_current == 2)
+         extract_current();
+      return m_values[m_current];
+   }
+   bool operator==(const u32_to_u16_iterator& that)const
+   {
+      if(m_position == that.m_position)
+      {
+         // Both m_currents must be equal, or both even
+         // this is the same as saying their sum must be even:
+         return (m_current + that.m_current) & 1u ? false : true;
+      }
+      return false;
+   }
+   bool operator!=(const u32_to_u16_iterator& that)const
+   {
+      return !(*this == that);
+   }
+   u32_to_u16_iterator& operator++()
+   {
+      // if we have a pending read then read now, so that we know whether
+      // to skip a position, or move to a low-surrogate:
+      if(m_current == 2)
+      {
+         // pending read:
+         extract_current();
+      }
+      // move to the next surrogate position:
+      ++m_current;
+      // if we've reached the end skip a position:
+      if(m_values[m_current] == 0)
+      {
+         m_current = 2;
+         ++m_position;
+      }
+      return *this;
+   }
+   u32_to_u16_iterator operator++(int)
+   {
+      u32_to_u16_iterator r(*this);
+      ++(*this);
+      return r;
+   }
+   u32_to_u16_iterator& operator--()
+   {
+      if(m_current != 1)
+      {
+         // decrementing an iterator always leads to a valid position:
+         --m_position;
+         extract_current();
+         m_current = m_values[1] ? 1 : 0;
+      }
+      else
+      {
+         m_current = 0;
+      }
+      return *this;
+   }
+   u32_to_u16_iterator operator--(int)
+   {
+      u32_to_u16_iterator r(*this);
+      --(*this);
+      return r;
+   }
+   BaseIterator base()const
+   {
+      return m_position;
+   }
+   // construct:
+   u32_to_u16_iterator() : m_position(), m_current(0)
+   {
+      m_values[0] = 0;
+      m_values[1] = 0;
+      m_values[2] = 0;
+   }
+   u32_to_u16_iterator(BaseIterator b) : m_position(b), m_current(2)
+   {
+      m_values[0] = 0;
+      m_values[1] = 0;
+      m_values[2] = 0;
+   }
+private:
+
+   void extract_current()const
+   {
+      // begin by checking for a code point out of range:
+      ::boost::uint32_t v = *m_position;
+      if(v >= 0x10000u)
+      {
+         if(v > 0x10FFFFu)
+            detail::invalid_utf32_code_point(*m_position);
+         // split into two surrogates:
+         m_values[0] = static_cast<U16Type>(v >> 10) + detail::high_surrogate_base;
+         m_values[1] = static_cast<U16Type>(v & detail::ten_bit_mask) + detail::low_surrogate_base;
+         m_current = 0;
+         BOOST_REGEX_ASSERT(detail::is_high_surrogate(m_values[0]));
+         BOOST_REGEX_ASSERT(detail::is_low_surrogate(m_values[1]));
+      }
+      else
+      {
+         // 16-bit code point:
+         m_values[0] = static_cast<U16Type>(*m_position);
+         m_values[1] = 0;
+         m_current = 0;
+         // value must not be a surrogate:
+         if(detail::is_surrogate(m_values[0]))
+            detail::invalid_utf32_code_point(*m_position);
+      }
+   }
+   BaseIterator m_position;
+   mutable U16Type m_values[3];
+   mutable unsigned m_current;
+};
+
+template <class BaseIterator, class U32Type = ::boost::uint32_t>
+class u16_to_u32_iterator
+{
+   // special values for pending iterator reads:
+   BOOST_STATIC_CONSTANT(U32Type, pending_read = 0xffffffffu);
+
+#if !defined(BOOST_NO_STD_ITERATOR_TRAITS)
+   typedef typename std::iterator_traits<BaseIterator>::value_type base_value_type;
+
+   BOOST_STATIC_ASSERT(sizeof(base_value_type)*CHAR_BIT == 16);
+   BOOST_STATIC_ASSERT(sizeof(U32Type)*CHAR_BIT == 32);
+#endif
+
+public:
+   typedef std::ptrdiff_t     difference_type;
+   typedef U32Type            value_type;
+   typedef value_type const*  pointer;
+   typedef value_type const   reference;
+   typedef std::bidirectional_iterator_tag iterator_category;
+
+   reference operator*()const
+   {
+      if(m_value == pending_read)
+         extract_current();
+      return m_value;
+   }
+   bool operator==(const u16_to_u32_iterator& that)const
+   {
+      return m_position == that.m_position;
+   }
+   bool operator!=(const u16_to_u32_iterator& that)const
+   {
+      return !(*this == that);
+   }
+   u16_to_u32_iterator& operator++()
+   {
+      // skip high surrogate first if there is one:
+      if(detail::is_high_surrogate(*m_position)) ++m_position;
+      ++m_position;
+      m_value = pending_read;
+      return *this;
+   }
+   u16_to_u32_iterator operator++(int)
+   {
+      u16_to_u32_iterator r(*this);
+      ++(*this);
+      return r;
+   }
+   u16_to_u32_iterator& operator--()
+   {
+      --m_position;
+      // if we have a low surrogate then go back one more:
+      if(detail::is_low_surrogate(*m_position)) 
+         --m_position;
+      m_value = pending_read;
+      return *this;
+   }
+   u16_to_u32_iterator operator--(int)
+   {
+      u16_to_u32_iterator r(*this);
+      --(*this);
+      return r;
+   }
+   BaseIterator base()const
+   {
+      return m_position;
+   }
+   // construct:
+   u16_to_u32_iterator() : m_position()
+   {
+      m_value = pending_read;
+   }
+   u16_to_u32_iterator(BaseIterator b) : m_position(b)
+   {
+      m_value = pending_read;
+   }
+   //
+   // Range checked version:
+   //
+   u16_to_u32_iterator(BaseIterator b, BaseIterator start, BaseIterator end) : m_position(b)
+   {
+      m_value = pending_read;
+      //
+      // The range must not start with a low surrogate, or end in a high surrogate,
+      // otherwise we run the risk of running outside the underlying input range.
+      // Likewise b must not be located at a low surrogate.
+      //
+      boost::uint16_t val;
+      if(start != end)
+      {
+         if((b != start) && (b != end))
+         {
+            val = *b;
+            if(detail::is_surrogate(val) && ((val & 0xFC00u) == 0xDC00u))
+               invalid_code_point(val);
+         }
+         val = *start;
+         if(detail::is_surrogate(val) && ((val & 0xFC00u) == 0xDC00u))
+            invalid_code_point(val);
+         val = *--end;
+         if(detail::is_high_surrogate(val))
+            invalid_code_point(val);
+      }
+   }
+private:
+   static void invalid_code_point(::boost::uint16_t val)
+   {
+#ifndef BOOST_NO_STD_LOCALE
+      std::stringstream ss;
+      ss << "Misplaced UTF-16 surrogate U+" << std::showbase << std::hex << val << " encountered while trying to encode UTF-32 sequence";
+      std::out_of_range e(ss.str());
+#else
+      std::out_of_range e("Misplaced UTF-16 surrogate encountered while trying to encode UTF-32 sequence");
+#endif
+      boost::throw_exception(e);
+   }
+   void extract_current()const
+   {
+      m_value = static_cast<U32Type>(static_cast< ::boost::uint16_t>(*m_position));
+      // if the last value is a high surrogate then adjust m_position and m_value as needed:
+      if(detail::is_high_surrogate(*m_position))
+      {
+         // precondition; next value must have be a low-surrogate:
+         BaseIterator next(m_position);
+         ::boost::uint16_t t = *++next;
+         if((t & 0xFC00u) != 0xDC00u)
+            invalid_code_point(t);
+         m_value = (m_value - detail::high_surrogate_base) << 10;
+         m_value |= (static_cast<U32Type>(static_cast< ::boost::uint16_t>(t)) & detail::ten_bit_mask);
+      }
+      // postcondition; result must not be a surrogate:
+      if(detail::is_surrogate(m_value))
+         invalid_code_point(static_cast< ::boost::uint16_t>(m_value));
+   }
+   BaseIterator m_position;
+   mutable U32Type m_value;
+};
+
+template <class BaseIterator, class U8Type = ::boost::uint8_t>
+class u32_to_u8_iterator
+{
+#if !defined(BOOST_NO_STD_ITERATOR_TRAITS)
+   typedef typename std::iterator_traits<BaseIterator>::value_type base_value_type;
+
+   BOOST_STATIC_ASSERT(sizeof(base_value_type)*CHAR_BIT == 32);
+   BOOST_STATIC_ASSERT(sizeof(U8Type)*CHAR_BIT == 8);
+#endif
+
+public:
+   typedef std::ptrdiff_t     difference_type;
+   typedef U8Type             value_type;
+   typedef value_type const*  pointer;
+   typedef value_type const   reference;
+   typedef std::bidirectional_iterator_tag iterator_category;
+
+   reference operator*()const
+   {
+      if(m_current == 4)
+         extract_current();
+      return m_values[m_current];
+   }
+   bool operator==(const u32_to_u8_iterator& that)const
+   {
+      if(m_position == that.m_position)
+      {
+         // either the m_current's must be equal, or one must be 0 and 
+         // the other 4: which means neither must have bits 1 or 2 set:
+         return (m_current == that.m_current)
+            || (((m_current | that.m_current) & 3) == 0);
+      }
+      return false;
+   }
+   bool operator!=(const u32_to_u8_iterator& that)const
+   {
+      return !(*this == that);
+   }
+   u32_to_u8_iterator& operator++()
+   {
+      // if we have a pending read then read now, so that we know whether
+      // to skip a position, or move to a low-surrogate:
+      if(m_current == 4)
+      {
+         // pending read:
+         extract_current();
+      }
+      // move to the next surrogate position:
+      ++m_current;
+      // if we've reached the end skip a position:
+      if(m_values[m_current] == 0)
+      {
+         m_current = 4;
+         ++m_position;
+      }
+      return *this;
+   }
+   u32_to_u8_iterator operator++(int)
+   {
+      u32_to_u8_iterator r(*this);
+      ++(*this);
+      return r;
+   }
+   u32_to_u8_iterator& operator--()
+   {
+      if((m_current & 3) == 0)
+      {
+         --m_position;
+         extract_current();
+         m_current = 3;
+         while(m_current && (m_values[m_current] == 0))
+            --m_current;
+      }
+      else
+         --m_current;
+      return *this;
+   }
+   u32_to_u8_iterator operator--(int)
+   {
+      u32_to_u8_iterator r(*this);
+      --(*this);
+      return r;
+   }
+   BaseIterator base()const
+   {
+      return m_position;
+   }
+   // construct:
+   u32_to_u8_iterator() : m_position(), m_current(0)
+   {
+      m_values[0] = 0;
+      m_values[1] = 0;
+      m_values[2] = 0;
+      m_values[3] = 0;
+      m_values[4] = 0;
+   }
+   u32_to_u8_iterator(BaseIterator b) : m_position(b), m_current(4)
+   {
+      m_values[0] = 0;
+      m_values[1] = 0;
+      m_values[2] = 0;
+      m_values[3] = 0;
+      m_values[4] = 0;
+   }
+private:
+
+   void extract_current()const
+   {
+      boost::uint32_t c = *m_position;
+      if(c > 0x10FFFFu)
+         detail::invalid_utf32_code_point(c);
+      if(c < 0x80u)
+      {
+         m_values[0] = static_cast<unsigned char>(c);
+         m_values[1] = static_cast<unsigned char>(0u);
+         m_values[2] = static_cast<unsigned char>(0u);
+         m_values[3] = static_cast<unsigned char>(0u);
+      }
+      else if(c < 0x800u)
+      {
+         m_values[0] = static_cast<unsigned char>(0xC0u + (c >> 6));
+         m_values[1] = static_cast<unsigned char>(0x80u + (c & 0x3Fu));
+         m_values[2] = static_cast<unsigned char>(0u);
+         m_values[3] = static_cast<unsigned char>(0u);
+      }
+      else if(c < 0x10000u)
+      {
+         m_values[0] = static_cast<unsigned char>(0xE0u + (c >> 12));
+         m_values[1] = static_cast<unsigned char>(0x80u + ((c >> 6) & 0x3Fu));
+         m_values[2] = static_cast<unsigned char>(0x80u + (c & 0x3Fu));
+         m_values[3] = static_cast<unsigned char>(0u);
+      }
+      else
+      {
+         m_values[0] = static_cast<unsigned char>(0xF0u + (c >> 18));
+         m_values[1] = static_cast<unsigned char>(0x80u + ((c >> 12) & 0x3Fu));
+         m_values[2] = static_cast<unsigned char>(0x80u + ((c >> 6) & 0x3Fu));
+         m_values[3] = static_cast<unsigned char>(0x80u + (c & 0x3Fu));
+      }
+      m_current= 0;
+   }
+   BaseIterator m_position;
+   mutable U8Type m_values[5];
+   mutable unsigned m_current;
+};
+
+template <class BaseIterator, class U32Type = ::boost::uint32_t>
+class u8_to_u32_iterator
+{
+   // special values for pending iterator reads:
+   BOOST_STATIC_CONSTANT(U32Type, pending_read = 0xffffffffu);
+
+#if !defined(BOOST_NO_STD_ITERATOR_TRAITS)
+   typedef typename std::iterator_traits<BaseIterator>::value_type base_value_type;
+
+   BOOST_STATIC_ASSERT(sizeof(base_value_type)*CHAR_BIT == 8);
+   BOOST_STATIC_ASSERT(sizeof(U32Type)*CHAR_BIT == 32);
+#endif
+
+public:
+   typedef std::ptrdiff_t     difference_type;
+   typedef U32Type            value_type;
+   typedef value_type const*  pointer;
+   typedef value_type const   reference;
+   typedef std::bidirectional_iterator_tag iterator_category;
+
+   reference operator*()const
+   {
+      if(m_value == pending_read)
+         extract_current();
+      return m_value;
+   }
+   bool operator==(const u8_to_u32_iterator& that)const
+   {
+      return m_position == that.m_position;
+   }
+   bool operator!=(const u8_to_u32_iterator& that)const
+   {
+      return !(*this == that);
+   }
+   u8_to_u32_iterator& operator++()
+   {
+      // We must not start with a continuation character:
+      if((static_cast<boost::uint8_t>(*m_position) & 0xC0) == 0x80)
+         invalid_sequence();
+      // skip high surrogate first if there is one:
+      unsigned c = detail::utf8_byte_count(*m_position);
+      if(m_value == pending_read)
+      {
+         // Since we haven't read in a value, we need to validate the code points:
+         for(unsigned i = 0; i < c; ++i)
+         {
+            ++m_position;
+            // We must have a continuation byte:
+            if((i != c - 1) && ((static_cast<boost::uint8_t>(*m_position) & 0xC0) != 0x80))
+               invalid_sequence();
+         }
+      }
+      else
+      {
+         std::advance(m_position, c);
+      }
+      m_value = pending_read;
+      return *this;
+   }
+   u8_to_u32_iterator operator++(int)
+   {
+      u8_to_u32_iterator r(*this);
+      ++(*this);
+      return r;
+   }
+   u8_to_u32_iterator& operator--()
+   {
+      // Keep backtracking until we don't have a trailing character:
+      unsigned count = 0;
+      while((*--m_position & 0xC0u) == 0x80u) ++count;
+      // now check that the sequence was valid:
+      if(count != detail::utf8_trailing_byte_count(*m_position))
+         invalid_sequence();
+      m_value = pending_read;
+      return *this;
+   }
+   u8_to_u32_iterator operator--(int)
+   {
+      u8_to_u32_iterator r(*this);
+      --(*this);
+      return r;
+   }
+   BaseIterator base()const
+   {
+      return m_position;
+   }
+   // construct:
+   u8_to_u32_iterator() : m_position()
+   {
+      m_value = pending_read;
+   }
+   u8_to_u32_iterator(BaseIterator b) : m_position(b)
+   {
+      m_value = pending_read;
+   }
+   //
+   // Checked constructor:
+   //
+   u8_to_u32_iterator(BaseIterator b, BaseIterator start, BaseIterator end) : m_position(b)
+   {
+      m_value = pending_read;
+      //
+      // We must not start with a continuation character, or end with a 
+      // truncated UTF-8 sequence otherwise we run the risk of going past
+      // the start/end of the underlying sequence:
+      //
+      if(start != end)
+      {
+         unsigned char v = *start;
+         if((v & 0xC0u) == 0x80u)
+            invalid_sequence();
+         if((b != start) && (b != end) && ((*b & 0xC0u) == 0x80u))
+            invalid_sequence();
+         BaseIterator pos = end;
+         do
+         {
+            v = *--pos;
+         }
+         while((start != pos) && ((v & 0xC0u) == 0x80u));
+         std::ptrdiff_t extra = detail::utf8_byte_count(v);
+         if(std::distance(pos, end) < extra)
+            invalid_sequence();
+      }
+   }
+private:
+   static void invalid_sequence()
+   {
+      std::out_of_range e("Invalid UTF-8 sequence encountered while trying to encode UTF-32 character");
+      boost::throw_exception(e);
+   }
+   void extract_current()const
+   {
+      m_value = static_cast<U32Type>(static_cast< ::boost::uint8_t>(*m_position));
+      // we must not have a continuation character:
+      if((m_value & 0xC0u) == 0x80u)
+         invalid_sequence();
+      // see how many extra bytes we have:
+      unsigned extra = detail::utf8_trailing_byte_count(*m_position);
+      // extract the extra bits, 6 from each extra byte:
+      BaseIterator next(m_position);
+      for(unsigned c = 0; c < extra; ++c)
+      {
+         ++next;
+         m_value <<= 6;
+         // We must have a continuation byte:
+         if((static_cast<boost::uint8_t>(*next) & 0xC0) != 0x80)
+            invalid_sequence();
+         m_value += static_cast<boost::uint8_t>(*next) & 0x3Fu;
+      }
+      // we now need to remove a few of the leftmost bits, but how many depends
+      // upon how many extra bytes we've extracted:
+      static const boost::uint32_t masks[4] = 
+      {
+         0x7Fu,
+         0x7FFu,
+         0xFFFFu,
+         0x1FFFFFu,
+      };
+      m_value &= masks[extra];
+      // check the result is in range:
+      if(m_value > static_cast<U32Type>(0x10FFFFu))
+         invalid_sequence();
+      // The result must not be a surrogate:
+      if((m_value >= static_cast<U32Type>(0xD800)) && (m_value <= static_cast<U32Type>(0xDFFF)))
+         invalid_sequence();
+      // We should not have had an invalidly encoded UTF8 sequence:
+      if((extra > 0) && (m_value <= static_cast<U32Type>(masks[extra - 1])))
+         invalid_sequence();
+   }
+   BaseIterator m_position;
+   mutable U32Type m_value;
+};
+
+template <class BaseIterator>
+class utf16_output_iterator
+{
+public:
+   typedef void                                   difference_type;
+   typedef void                                   value_type;
+   typedef boost::uint32_t*                       pointer;
+   typedef boost::uint32_t&                       reference;
+   typedef std::output_iterator_tag               iterator_category;
+
+   utf16_output_iterator(const BaseIterator& b)
+      : m_position(b){}
+   utf16_output_iterator(const utf16_output_iterator& that)
+      : m_position(that.m_position){}
+   utf16_output_iterator& operator=(const utf16_output_iterator& that)
+   {
+      m_position = that.m_position;
+      return *this;
+   }
+   const utf16_output_iterator& operator*()const
+   {
+      return *this;
+   }
+   void operator=(boost::uint32_t val)const
+   {
+      push(val);
+   }
+   utf16_output_iterator& operator++()
+   {
+      return *this;
+   }
+   utf16_output_iterator& operator++(int)
+   {
+      return *this;
+   }
+   BaseIterator base()const
+   {
+      return m_position;
+   }
+private:
+   void push(boost::uint32_t v)const
+   {
+      if(v >= 0x10000u)
+      {
+         // begin by checking for a code point out of range:
+         if(v > 0x10FFFFu)
+            detail::invalid_utf32_code_point(v);
+         // split into two surrogates:
+         *m_position++ = static_cast<boost::uint16_t>(v >> 10) + detail::high_surrogate_base;
+         *m_position++ = static_cast<boost::uint16_t>(v & detail::ten_bit_mask) + detail::low_surrogate_base;
+      }
+      else
+      {
+         // 16-bit code point:
+         // value must not be a surrogate:
+         if(detail::is_surrogate(v))
+            detail::invalid_utf32_code_point(v);
+         *m_position++ = static_cast<boost::uint16_t>(v);
+      }
+   }
+   mutable BaseIterator m_position;
+};
+
+template <class BaseIterator>
+class utf8_output_iterator
+{
+public:
+   typedef void                                   difference_type;
+   typedef void                                   value_type;
+   typedef boost::uint32_t*                       pointer;
+   typedef boost::uint32_t&                       reference;
+   typedef std::output_iterator_tag               iterator_category;
+
+   utf8_output_iterator(const BaseIterator& b)
+      : m_position(b){}
+   utf8_output_iterator(const utf8_output_iterator& that)
+      : m_position(that.m_position){}
+   utf8_output_iterator& operator=(const utf8_output_iterator& that)
+   {
+      m_position = that.m_position;
+      return *this;
+   }
+   const utf8_output_iterator& operator*()const
+   {
+      return *this;
+   }
+   void operator=(boost::uint32_t val)const
+   {
+      push(val);
+   }
+   utf8_output_iterator& operator++()
+   {
+      return *this;
+   }
+   utf8_output_iterator& operator++(int)
+   {
+      return *this;
+   }
+   BaseIterator base()const
+   {
+      return m_position;
+   }
+private:
+   void push(boost::uint32_t c)const
+   {
+      if(c > 0x10FFFFu)
+         detail::invalid_utf32_code_point(c);
+      if(c < 0x80u)
+      {
+         *m_position++ = static_cast<unsigned char>(c);
+      }
+      else if(c < 0x800u)
+      {
+         *m_position++ = static_cast<unsigned char>(0xC0u + (c >> 6));
+         *m_position++ = static_cast<unsigned char>(0x80u + (c & 0x3Fu));
+      }
+      else if(c < 0x10000u)
+      {
+         *m_position++ = static_cast<unsigned char>(0xE0u + (c >> 12));
+         *m_position++ = static_cast<unsigned char>(0x80u + ((c >> 6) & 0x3Fu));
+         *m_position++ = static_cast<unsigned char>(0x80u + (c & 0x3Fu));
+      }
+      else
+      {
+         *m_position++ = static_cast<unsigned char>(0xF0u + (c >> 18));
+         *m_position++ = static_cast<unsigned char>(0x80u + ((c >> 12) & 0x3Fu));
+         *m_position++ = static_cast<unsigned char>(0x80u + ((c >> 6) & 0x3Fu));
+         *m_position++ = static_cast<unsigned char>(0x80u + (c & 0x3Fu));
+      }
+   }
+   mutable BaseIterator m_position;
+};
+
+} // namespace boost
+
+#endif // BOOST_REGEX_UNICODE_ITERATOR_HPP
+

lib/third_party/boost/regex/include/boost/regex/v5/basic_regex.hpp

@@ -0,0 +1,734 @@
+/*
+ *
+ * Copyright (c) 1998-2004 John Maddock
+ * Copyright 2011 Garmin Ltd. or its subsidiaries
+ *
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org/ for most recent version.
+  *   FILE         basic_regex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class basic_regex.
+  */
+
+#ifndef BOOST_REGEX_V5_BASIC_REGEX_HPP
+#define BOOST_REGEX_V5_BASIC_REGEX_HPP
+
+#include <vector>
+
+namespace boost{
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4251)
+#if BOOST_REGEX_MSVC < 1700
+#     pragma warning(disable : 4231)
+#endif
+#if BOOST_REGEX_MSVC < 1600
+#pragma warning(disable : 4660)
+#endif
+#if BOOST_REGEX_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+//
+// forward declaration, we will need this one later:
+//
+template <class charT, class traits>
+class basic_regex_parser;
+
+template <class I>
+void bubble_down_one(I first, I last)
+{
+   if(first != last)
+   {
+      I next = last - 1;
+      while((next != first) && (*next < *(next-1)))
+      {
+         (next-1)->swap(*next);
+         --next;
+      }
+   }
+}
+
+static const int hash_value_mask = 1 << (std::numeric_limits<int>::digits - 1);
+
+template <class Iterator>
+inline int hash_value_from_capture_name(Iterator i, Iterator j)
+{
+   std::size_t r = 0;
+   while (i != j)
+   {
+      r ^= *i + 0x9e3779b9 + (r << 6) + (r >> 2);
+      ++i;
+   }
+   r %= ((std::numeric_limits<int>::max)());
+   return static_cast<int>(r) | hash_value_mask;
+}
+
+class named_subexpressions
+{
+public:
+   struct name
+   {
+      template <class charT>
+      name(const charT* i, const charT* j, int idx)
+         : index(idx) 
+      { 
+         hash = hash_value_from_capture_name(i, j); 
+      }
+      name(int h, int idx)
+         : index(idx), hash(h)
+      { 
+      }
+      int index;
+      int hash;
+      bool operator < (const name& other)const
+      {
+         return hash < other.hash;
+      }
+      bool operator == (const name& other)const
+      {
+         return hash == other.hash; 
+      }
+      void swap(name& other)
+      {
+         std::swap(index, other.index);
+         std::swap(hash, other.hash);
+      }
+   };
+
+   typedef std::vector<name>::const_iterator const_iterator;
+   typedef std::pair<const_iterator, const_iterator> range_type;
+
+   named_subexpressions(){}
+
+   template <class charT>
+   void set_name(const charT* i, const charT* j, int index)
+   {
+      m_sub_names.push_back(name(i, j, index));
+      bubble_down_one(m_sub_names.begin(), m_sub_names.end());
+   }
+   template <class charT>
+   int get_id(const charT* i, const charT* j)const
+   {
+      name t(i, j, 0);
+      typename std::vector<name>::const_iterator pos = std::lower_bound(m_sub_names.begin(), m_sub_names.end(), t);
+      if((pos != m_sub_names.end()) && (*pos == t))
+      {
+         return pos->index;
+      }
+      return -1;
+   }
+   template <class charT>
+   range_type equal_range(const charT* i, const charT* j)const
+   {
+      name t(i, j, 0);
+      return std::equal_range(m_sub_names.begin(), m_sub_names.end(), t);
+   }
+   int get_id(int h)const
+   {
+      name t(h, 0);
+      std::vector<name>::const_iterator pos = std::lower_bound(m_sub_names.begin(), m_sub_names.end(), t);
+      if((pos != m_sub_names.end()) && (*pos == t))
+      {
+         return pos->index;
+      }
+      return -1;
+   }
+   range_type equal_range(int h)const
+   {
+      name t(h, 0);
+      return std::equal_range(m_sub_names.begin(), m_sub_names.end(), t);
+   }
+private:
+   std::vector<name> m_sub_names;
+};
+
+//
+// class regex_data:
+// represents the data we wish to expose to the matching algorithms.
+//
+template <class charT, class traits>
+struct regex_data : public named_subexpressions
+{
+   typedef regex_constants::syntax_option_type   flag_type;
+   typedef std::size_t                           size_type;  
+
+   regex_data(const ::std::shared_ptr<
+      ::boost::regex_traits_wrapper<traits> >& t) 
+      : m_ptraits(t), m_flags(0), m_status(0), m_expression(0), m_expression_len(0),
+         m_mark_count(0), m_first_state(0), m_restart_type(0),
+         m_startmap{ 0 },
+         m_can_be_null(0), m_word_mask(0), m_has_recursions(false), m_disable_match_any(false) {}
+   regex_data() 
+      : m_ptraits(new ::boost::regex_traits_wrapper<traits>()), m_flags(0), m_status(0), m_expression(0), m_expression_len(0), 
+         m_mark_count(0), m_first_state(0), m_restart_type(0), 
+      m_startmap{ 0 },
+         m_can_be_null(0), m_word_mask(0), m_has_recursions(false), m_disable_match_any(false) {}
+
+   ::std::shared_ptr<
+      ::boost::regex_traits_wrapper<traits>
+      >                        m_ptraits;                 // traits class instance
+   flag_type                   m_flags;                   // flags with which we were compiled
+   int                         m_status;                  // error code (0 implies OK).
+   const charT*                m_expression;              // the original expression
+   std::ptrdiff_t              m_expression_len;          // the length of the original expression
+   size_type                   m_mark_count;              // the number of marked sub-expressions
+   BOOST_REGEX_DETAIL_NS::re_syntax_base*  m_first_state;             // the first state of the machine
+   unsigned                    m_restart_type;            // search optimisation type
+   unsigned char               m_startmap[1 << CHAR_BIT]; // which characters can start a match
+   unsigned int                m_can_be_null;             // whether we can match a null string
+   BOOST_REGEX_DETAIL_NS::raw_storage      m_data;                    // the buffer in which our states are constructed
+   typename traits::char_class_type    m_word_mask;       // mask used to determine if a character is a word character
+   std::vector<
+      std::pair<
+      std::size_t, std::size_t> > m_subs;                 // Position of sub-expressions within the *string*.
+   bool                        m_has_recursions;          // whether we have recursive expressions;
+   bool                        m_disable_match_any;       // when set we need to disable the match_any flag as it causes different/buggy behaviour.
+};
+//
+// class basic_regex_implementation
+// pimpl implementation class for basic_regex.
+//
+template <class charT, class traits>
+class basic_regex_implementation
+   : public regex_data<charT, traits>
+{
+public:
+   typedef regex_constants::syntax_option_type   flag_type;
+   typedef std::ptrdiff_t                        difference_type;
+   typedef std::size_t                           size_type; 
+   typedef typename traits::locale_type          locale_type;
+   typedef const charT*                          const_iterator;
+
+   basic_regex_implementation(){}
+   basic_regex_implementation(const ::std::shared_ptr<
+      ::boost::regex_traits_wrapper<traits> >& t)
+      : regex_data<charT, traits>(t) {}
+   void assign(const charT* arg_first,
+                          const charT* arg_last,
+                          flag_type f)
+   {
+      regex_data<charT, traits>* pdat = this;
+      basic_regex_parser<charT, traits> parser(pdat);
+      parser.parse(arg_first, arg_last, f);
+   }
+
+   locale_type  imbue(locale_type l)
+   { 
+      return this->m_ptraits->imbue(l); 
+   }
+   locale_type  getloc()const
+   { 
+      return this->m_ptraits->getloc(); 
+   }
+   std::basic_string<charT>  str()const
+   {
+      std::basic_string<charT> result;
+      if(this->m_status == 0)
+         result = std::basic_string<charT>(this->m_expression, this->m_expression_len);
+      return result;
+   }
+   const_iterator  expression()const
+   {
+      return this->m_expression;
+   }
+   std::pair<const_iterator, const_iterator>  subexpression(std::size_t n)const
+   {
+      const std::pair<std::size_t, std::size_t>& pi = this->m_subs.at(n);
+      std::pair<const_iterator, const_iterator> p(expression() + pi.first, expression() + pi.second);
+      return p;
+   }
+   //
+   // begin, end:
+   const_iterator  begin()const
+   { 
+      return (this->m_status ? 0 : this->m_expression); 
+   }
+   const_iterator  end()const
+   { 
+      return (this->m_status ? 0 : this->m_expression + this->m_expression_len); 
+   }
+   flag_type  flags()const
+   {
+      return this->m_flags;
+   }
+   size_type  size()const
+   {
+      return this->m_expression_len;
+   }
+   int  status()const
+   {
+      return this->m_status;
+   }
+   size_type  mark_count()const
+   {
+      return this->m_mark_count - 1;
+   }
+   const BOOST_REGEX_DETAIL_NS::re_syntax_base* get_first_state()const
+   {
+      return this->m_first_state;
+   }
+   unsigned get_restart_type()const
+   {
+      return this->m_restart_type;
+   }
+   const unsigned char* get_map()const
+   {
+      return this->m_startmap;
+   }
+   const ::boost::regex_traits_wrapper<traits>& get_traits()const
+   {
+      return *(this->m_ptraits);
+   }
+   bool can_be_null()const
+   {
+      return this->m_can_be_null;
+   }
+   const regex_data<charT, traits>& get_data()const
+   {
+      basic_regex_implementation<charT, traits> const* p = this;
+      return *static_cast<const regex_data<charT, traits>*>(p);
+   }
+};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+//
+// class basic_regex:
+// represents the compiled
+// regular expression:
+//
+
+#ifdef BOOST_REGEX_NO_FWD
+template <class charT, class traits = regex_traits<charT> >
+#else
+template <class charT, class traits >
+#endif
+class basic_regex : public regbase
+{
+public:
+   // typedefs:
+   typedef std::size_t                           traits_size_type;
+   typedef typename traits::string_type          traits_string_type;
+   typedef charT                                 char_type;
+   typedef traits                                traits_type;
+
+   typedef charT                                 value_type;
+   typedef charT&                                reference;
+   typedef const charT&                          const_reference;
+   typedef const charT*                          const_iterator;
+   typedef const_iterator                        iterator;
+   typedef std::ptrdiff_t                        difference_type;
+   typedef std::size_t                           size_type;   
+   typedef regex_constants::syntax_option_type   flag_type;
+   // locale_type
+   // placeholder for actual locale type used by the
+   // traits class to localise *this.
+   typedef typename traits::locale_type          locale_type;
+   
+public:
+   explicit basic_regex(){}
+   explicit basic_regex(const charT* p, flag_type f = regex_constants::normal)
+   {
+      assign(p, f);
+   }
+   basic_regex(const charT* p1, const charT* p2, flag_type f = regex_constants::normal)
+   {
+      assign(p1, p2, f);
+   }
+   basic_regex(const charT* p, size_type len, flag_type f)
+   {
+      assign(p, len, f);
+   }
+   basic_regex(const basic_regex& that)
+      : m_pimpl(that.m_pimpl) {}
+   ~basic_regex(){}
+   basic_regex&  operator=(const basic_regex& that)
+   {
+      return assign(that);
+   }
+   basic_regex&  operator=(const charT* ptr)
+   {
+      return assign(ptr);
+   }
+
+   //
+   // assign:
+   basic_regex& assign(const basic_regex& that)
+   { 
+      m_pimpl = that.m_pimpl;
+      return *this; 
+   }
+   basic_regex& assign(const charT* p, flag_type f = regex_constants::normal)
+   {
+      return assign(p, p + traits::length(p), f);
+   }
+   basic_regex& assign(const charT* p, size_type len, flag_type f)
+   {
+      return assign(p, p + len, f);
+   }
+private:
+   basic_regex& do_assign(const charT* p1,
+                          const charT* p2,
+                          flag_type f);
+public:
+   basic_regex& assign(const charT* p1,
+                          const charT* p2,
+                          flag_type f = regex_constants::normal)
+   {
+      return do_assign(p1, p2, f);
+   }
+
+   template <class ST, class SA>
+   unsigned int  set_expression(const std::basic_string<charT, ST, SA>& p, flag_type f = regex_constants::normal)
+   { 
+      return set_expression(p.data(), p.data() + p.size(), f); 
+   }
+
+   template <class ST, class SA>
+   explicit basic_regex(const std::basic_string<charT, ST, SA>& p, flag_type f = regex_constants::normal)
+   { 
+      assign(p, f); 
+   }
+
+   template <class InputIterator>
+   basic_regex(InputIterator arg_first, InputIterator arg_last, flag_type f = regex_constants::normal)
+   {
+      typedef typename traits::string_type seq_type;
+      seq_type a(arg_first, arg_last);
+      if(!a.empty())
+         assign(static_cast<const charT*>(&*a.begin()), static_cast<const charT*>(&*a.begin() + a.size()), f);
+      else
+         assign(static_cast<const charT*>(0), static_cast<const charT*>(0), f);
+   }
+
+   template <class ST, class SA>
+   basic_regex&  operator=(const std::basic_string<charT, ST, SA>& p)
+   {
+      return assign(p.data(), p.data() + p.size(), regex_constants::normal);
+   }
+
+   template <class string_traits, class A>
+   basic_regex&  assign(
+       const std::basic_string<charT, string_traits, A>& s,
+       flag_type f = regex_constants::normal)
+   {
+      return assign(s.data(), s.data() + s.size(), f);
+   }
+
+   template <class InputIterator>
+   basic_regex&  assign(InputIterator arg_first,
+                          InputIterator arg_last,
+                          flag_type f = regex_constants::normal)
+   {
+      typedef typename traits::string_type seq_type;
+      seq_type a(arg_first, arg_last);
+      if(a.size())
+      {
+         const charT* p1 = &*a.begin();
+         const charT* p2 = &*a.begin() + a.size();
+         return assign(p1, p2, f);
+      }
+      return assign(static_cast<const charT*>(0), static_cast<const charT*>(0), f);
+   }
+
+   //
+   // locale:
+   locale_type  imbue(locale_type l);
+   locale_type  getloc()const
+   { 
+      return m_pimpl.get() ? m_pimpl->getloc() : locale_type(); 
+   }
+   //
+   // getflags:
+   // retained for backwards compatibility only, "flags"
+   // is now the preferred name:
+   flag_type  getflags()const
+   { 
+      return flags();
+   }
+   flag_type  flags()const
+   { 
+      return m_pimpl.get() ? m_pimpl->flags() : 0;
+   }
+   //
+   // str:
+   std::basic_string<charT>  str()const
+   {
+      return m_pimpl.get() ? m_pimpl->str() : std::basic_string<charT>();
+   }
+   //
+   // begin, end, subexpression:
+   std::pair<const_iterator, const_iterator>  subexpression(std::size_t n)const
+   {
+#ifdef BOOST_REGEX_STANDALONE
+      if (!m_pimpl.get())
+         throw std::logic_error("Can't access subexpressions in an invalid regex.");
+#else
+      if(!m_pimpl.get())
+         boost::throw_exception(std::logic_error("Can't access subexpressions in an invalid regex."));
+#endif
+      return m_pimpl->subexpression(n);
+   }
+   const_iterator  begin()const
+   { 
+      return (m_pimpl.get() ? m_pimpl->begin() : 0); 
+   }
+   const_iterator  end()const
+   { 
+      return (m_pimpl.get() ? m_pimpl->end() : 0); 
+   }
+   //
+   // swap:
+   void  swap(basic_regex& that)throw()
+   {
+      m_pimpl.swap(that.m_pimpl);
+   }
+   //
+   // size:
+   size_type  size()const
+   { 
+      return (m_pimpl.get() ? m_pimpl->size() : 0); 
+   }
+   //
+   // max_size:
+   size_type  max_size()const
+   { 
+      return UINT_MAX; 
+   }
+   //
+   // empty:
+   bool  empty()const
+   { 
+      return (m_pimpl.get() ? 0 != m_pimpl->status() : true); 
+   }
+
+   size_type  mark_count()const 
+   { 
+      return (m_pimpl.get() ? m_pimpl->mark_count() : 0); 
+   }
+
+   int status()const
+   {
+      return (m_pimpl.get() ? m_pimpl->status() : regex_constants::error_empty);
+   }
+
+   int  compare(const basic_regex& that) const
+   {
+      if(m_pimpl.get() == that.m_pimpl.get())
+         return 0;
+      if(!m_pimpl.get())
+         return -1;
+      if(!that.m_pimpl.get())
+         return 1;
+      if(status() != that.status())
+         return status() - that.status();
+      if(flags() != that.flags())
+         return flags() - that.flags();
+      return str().compare(that.str());
+   }
+   bool  operator==(const basic_regex& e)const
+   { 
+      return compare(e) == 0; 
+   }
+   bool  operator != (const basic_regex& e)const
+   { 
+      return compare(e) != 0; 
+   }
+   bool  operator<(const basic_regex& e)const
+   { 
+      return compare(e) < 0; 
+   }
+   bool  operator>(const basic_regex& e)const
+   { 
+      return compare(e) > 0; 
+   }
+   bool  operator<=(const basic_regex& e)const
+   { 
+      return compare(e) <= 0; 
+   }
+   bool  operator>=(const basic_regex& e)const
+   { 
+      return compare(e) >= 0; 
+   }
+
+   //
+   // The following are deprecated as public interfaces
+   // but are available for compatibility with earlier versions.
+   const charT*  expression()const 
+   { 
+      return (m_pimpl.get() && !m_pimpl->status() ? m_pimpl->expression() : 0); 
+   }
+   unsigned int  set_expression(const charT* p1, const charT* p2, flag_type f = regex_constants::normal)
+   {
+      assign(p1, p2, f | regex_constants::no_except);
+      return status();
+   }
+   unsigned int  set_expression(const charT* p, flag_type f = regex_constants::normal) 
+   { 
+      assign(p, f | regex_constants::no_except); 
+      return status();
+   }
+   unsigned int  error_code()const
+   {
+      return status();
+   }
+   //
+   // private access methods:
+   //
+   const BOOST_REGEX_DETAIL_NS::re_syntax_base* get_first_state()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_first_state();
+   }
+   unsigned get_restart_type()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_restart_type();
+   }
+   const unsigned char* get_map()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_map();
+   }
+   const ::boost::regex_traits_wrapper<traits>& get_traits()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_traits();
+   }
+   bool can_be_null()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->can_be_null();
+   }
+   const BOOST_REGEX_DETAIL_NS::regex_data<charT, traits>& get_data()const
+   {
+      BOOST_REGEX_ASSERT(0 != m_pimpl.get());
+      return m_pimpl->get_data();
+   }
+   std::shared_ptr<BOOST_REGEX_DETAIL_NS::named_subexpressions > get_named_subs()const
+   {
+      return m_pimpl;
+   }
+
+private:
+   std::shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> > m_pimpl;
+};
+
+//
+// out of line members;
+// these are the only members that mutate the basic_regex object,
+// and are designed to provide the strong exception guarantee
+// (in the event of a throw, the state of the object remains unchanged).
+//
+template <class charT, class traits>
+basic_regex<charT, traits>& basic_regex<charT, traits>::do_assign(const charT* p1,
+                        const charT* p2,
+                        flag_type f)
+{
+   std::shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> > temp;
+   if(!m_pimpl.get())
+   {
+      temp = std::shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> >(new BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits>());
+   }
+   else
+   {
+      temp = std::shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> >(new BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits>(m_pimpl->m_ptraits));
+   }
+   temp->assign(p1, p2, f);
+   temp.swap(m_pimpl);
+   return *this;
+}
+
+template <class charT, class traits>
+typename basic_regex<charT, traits>::locale_type  basic_regex<charT, traits>::imbue(locale_type l)
+{ 
+   std::shared_ptr<BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits> > temp(new BOOST_REGEX_DETAIL_NS::basic_regex_implementation<charT, traits>());
+   locale_type result = temp->imbue(l);
+   temp.swap(m_pimpl);
+   return result;
+}
+
+//
+// non-members:
+//
+template <class charT, class traits>
+void swap(basic_regex<charT, traits>& e1, basic_regex<charT, traits>& e2)
+{
+   e1.swap(e2);
+}
+
+template <class charT, class traits, class traits2>
+std::basic_ostream<charT, traits>& 
+   operator << (std::basic_ostream<charT, traits>& os, 
+                const basic_regex<charT, traits2>& e)
+{
+   return (os << e.str());
+}
+
+//
+// class reg_expression:
+// this is provided for backwards compatibility only,
+// it is deprecated, no not use!
+//
+#ifdef BOOST_REGEX_NO_FWD
+template <class charT, class traits = regex_traits<charT> >
+#else
+template <class charT, class traits >
+#endif
+class reg_expression : public basic_regex<charT, traits>
+{
+public:
+   typedef typename basic_regex<charT, traits>::flag_type flag_type;
+   typedef typename basic_regex<charT, traits>::size_type size_type;
+   explicit reg_expression(){}
+   explicit reg_expression(const charT* p, flag_type f = regex_constants::normal)
+      : basic_regex<charT, traits>(p, f){}
+   reg_expression(const charT* p1, const charT* p2, flag_type f = regex_constants::normal)
+      : basic_regex<charT, traits>(p1, p2, f){}
+   reg_expression(const charT* p, size_type len, flag_type f)
+      : basic_regex<charT, traits>(p, len, f){}
+   reg_expression(const reg_expression& that)
+      : basic_regex<charT, traits>(that) {}
+   ~reg_expression(){}
+   reg_expression&  operator=(const reg_expression& that)
+   {
+      return this->assign(that);
+   }
+
+   template <class ST, class SA>
+   explicit reg_expression(const std::basic_string<charT, ST, SA>& p, flag_type f = regex_constants::normal)
+   : basic_regex<charT, traits>(p, f)
+   { 
+   }
+
+   template <class InputIterator>
+   reg_expression(InputIterator arg_first, InputIterator arg_last, flag_type f = regex_constants::normal)
+   : basic_regex<charT, traits>(arg_first, arg_last, f)
+   {
+   }
+
+   template <class ST, class SA>
+   reg_expression&  operator=(const std::basic_string<charT, ST, SA>& p)
+   {
+      this->assign(p);
+      return *this;
+   }
+
+};
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning (pop)
+#endif
+
+} // namespace boost
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v5/c_regex_traits.hpp

@@ -0,0 +1,474 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         c_regex_traits.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression traits class that wraps the global C locale.
+  */
+
+#ifndef BOOST_C_REGEX_TRAITS_HPP_INCLUDED
+#define BOOST_C_REGEX_TRAITS_HPP_INCLUDED
+
+#include <boost/regex/config.hpp>
+#include <boost/regex/v5/regex_workaround.hpp>
+#include <cctype>
+
+namespace boost{
+
+   namespace BOOST_REGEX_DETAIL_NS {
+
+      enum
+      {
+         char_class_space = 1 << 0,
+         char_class_print = 1 << 1,
+         char_class_cntrl = 1 << 2,
+         char_class_upper = 1 << 3,
+         char_class_lower = 1 << 4,
+         char_class_alpha = 1 << 5,
+         char_class_digit = 1 << 6,
+         char_class_punct = 1 << 7,
+         char_class_xdigit = 1 << 8,
+         char_class_alnum = char_class_alpha | char_class_digit,
+         char_class_graph = char_class_alnum | char_class_punct,
+         char_class_blank = 1 << 9,
+         char_class_word = 1 << 10,
+         char_class_unicode = 1 << 11,
+         char_class_horizontal = 1 << 12,
+         char_class_vertical = 1 << 13
+      };
+
+   }
+
+template <class charT>
+struct c_regex_traits;
+
+template<>
+struct c_regex_traits<char>
+{
+   c_regex_traits(){}
+   typedef char char_type;
+   typedef std::size_t size_type;
+   typedef std::string string_type;
+   struct locale_type{};
+   typedef std::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::strlen)(p); 
+   }
+
+   char translate(char c) const 
+   { 
+      return c; 
+   }
+   char translate_nocase(char c) const 
+   { 
+      return static_cast<char>((std::tolower)(static_cast<unsigned char>(c))); 
+   }
+
+   static string_type  transform(const char* p1, const char* p2);
+   static string_type  transform_primary(const char* p1, const char* p2);
+
+   static char_class_type  lookup_classname(const char* p1, const char* p2);
+   static string_type  lookup_collatename(const char* p1, const char* p2);
+
+   static bool  isctype(char, char_class_type);
+   static int  value(char, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#ifndef BOOST_NO_WREGEX
+template<>
+struct c_regex_traits<wchar_t>
+{
+   c_regex_traits(){}
+   typedef wchar_t char_type;
+   typedef std::size_t size_type;
+   typedef std::wstring string_type;
+   struct locale_type{};
+   typedef std::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::wcslen)(p); 
+   }
+
+   wchar_t translate(wchar_t c) const 
+   { 
+      return c; 
+   }
+   wchar_t translate_nocase(wchar_t c) const 
+   { 
+      return (std::towlower)(c); 
+   }
+
+   static string_type  transform(const wchar_t* p1, const wchar_t* p2);
+   static string_type  transform_primary(const wchar_t* p1, const wchar_t* p2);
+
+   static char_class_type  lookup_classname(const wchar_t* p1, const wchar_t* p2);
+   static string_type  lookup_collatename(const wchar_t* p1, const wchar_t* p2);
+
+   static bool  isctype(wchar_t, char_class_type);
+   static int  value(wchar_t, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#endif // BOOST_NO_WREGEX
+
+inline c_regex_traits<char>::string_type  c_regex_traits<char>::transform(const char* p1, const char* p2)
+{
+   std::string result(10, ' ');
+   std::size_t s = result.size();
+   std::size_t r;
+   std::string src(p1, p2);
+   while (s < (r = std::strxfrm(&*result.begin(), src.c_str(), s)))
+   {
+#if defined(_CPPLIB_VER)
+      //
+      // A bug in VC11 and 12 causes the program to hang if we pass a null-string
+      // to std::strxfrm, but only for certain locales :-(
+      // Probably effects Intel and Clang or any compiler using the VC std library (Dinkumware).
+      //
+      if (r == INT_MAX)
+      {
+         result.erase();
+         result.insert(result.begin(), static_cast<char>(0));
+         return result;
+      }
+#endif
+      result.append(r - s + 3, ' ');
+      s = result.size();
+   }
+   result.erase(r);
+   return result;
+}
+
+inline c_regex_traits<char>::string_type  c_regex_traits<char>::transform_primary(const char* p1, const char* p2)
+{
+   static char s_delim;
+   static const int s_collate_type = ::boost::BOOST_REGEX_DETAIL_NS::find_sort_syntax(static_cast<c_regex_traits<char>*>(0), &s_delim);
+   std::string result;
+   //
+   // What we do here depends upon the format of the sort key returned by
+   // sort key returned by this->transform:
+   //
+   switch (s_collate_type)
+   {
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_C:
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_unknown:
+      // the best we can do is translate to lower case, then get a regular sort key:
+   {
+      result.assign(p1, p2);
+      for (std::string::size_type i = 0; i < result.size(); ++i)
+         result[i] = static_cast<char>((std::tolower)(static_cast<unsigned char>(result[i])));
+      result = transform(&*result.begin(), &*result.begin() + result.size());
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_fixed:
+   {
+      // get a regular sort key, and then truncate it:
+      result = transform(p1, p2);
+      result.erase(s_delim);
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_delim:
+      // get a regular sort key, and then truncate everything after the delim:
+      result = transform(p1, p2);
+      if ((!result.empty()) && (result[0] == s_delim))
+         break;
+      std::size_t i;
+      for (i = 0; i < result.size(); ++i)
+      {
+         if (result[i] == s_delim)
+            break;
+      }
+      result.erase(i);
+      break;
+   }
+   if (result.empty())
+      result = std::string(1, char(0));
+   return result;
+}
+
+inline c_regex_traits<char>::char_class_type  c_regex_traits<char>::lookup_classname(const char* p1, const char* p2)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   static const char_class_type masks[] =
+   {
+      0,
+      char_class_alnum,
+      char_class_alpha,
+      char_class_blank,
+      char_class_cntrl,
+      char_class_digit,
+      char_class_digit,
+      char_class_graph,
+      char_class_horizontal,
+      char_class_lower,
+      char_class_lower,
+      char_class_print,
+      char_class_punct,
+      char_class_space,
+      char_class_space,
+      char_class_upper,
+      char_class_unicode,
+      char_class_upper,
+      char_class_vertical,
+      char_class_alnum | char_class_word,
+      char_class_alnum | char_class_word,
+      char_class_xdigit,
+   };
+
+   int idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(p1, p2);
+   if (idx < 0)
+   {
+      std::string s(p1, p2);
+      for (std::string::size_type i = 0; i < s.size(); ++i)
+         s[i] = static_cast<char>((std::tolower)(static_cast<unsigned char>(s[i])));
+      idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(&*s.begin(), &*s.begin() + s.size());
+   }
+   BOOST_REGEX_ASSERT(std::size_t(idx) + 1u < sizeof(masks) / sizeof(masks[0]));
+   return masks[idx + 1];
+}
+
+inline bool  c_regex_traits<char>::isctype(char c, char_class_type mask)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   return
+      ((mask & char_class_space) && (std::isspace)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_print) && (std::isprint)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_cntrl) && (std::iscntrl)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_upper) && (std::isupper)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_lower) && (std::islower)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_alpha) && (std::isalpha)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_digit) && (std::isdigit)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_punct) && (std::ispunct)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_xdigit) && (std::isxdigit)(static_cast<unsigned char>(c)))
+      || ((mask & char_class_blank) && (std::isspace)(static_cast<unsigned char>(c)) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c))
+      || ((mask & char_class_word) && (c == '_'))
+      || ((mask & char_class_vertical) && (::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) || (c == '\v')))
+      || ((mask & char_class_horizontal) && (std::isspace)(static_cast<unsigned char>(c)) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) && (c != '\v'));
+}
+
+inline c_regex_traits<char>::string_type  c_regex_traits<char>::lookup_collatename(const char* p1, const char* p2)
+{
+   std::string s(p1, p2);
+   s = ::boost::BOOST_REGEX_DETAIL_NS::lookup_default_collate_name(s);
+   if (s.empty() && (p2 - p1 == 1))
+      s.append(1, *p1);
+   return s;
+}
+
+inline int  c_regex_traits<char>::value(char c, int radix)
+{
+   char b[2] = { c, '\0', };
+   char* ep;
+   int result = std::strtol(b, &ep, radix);
+   if (ep == b)
+      return -1;
+   return result;
+}
+
+#ifndef BOOST_NO_WREGEX
+
+inline c_regex_traits<wchar_t>::string_type  c_regex_traits<wchar_t>::transform(const wchar_t* p1, const wchar_t* p2)
+{
+   std::size_t r;
+   std::size_t s = 10;
+   std::wstring src(p1, p2);
+   std::wstring result(s, L' ');
+   while (s < (r = std::wcsxfrm(&*result.begin(), src.c_str(), s)))
+   {
+#if defined(_CPPLIB_VER)
+      //
+      // A bug in VC11 and 12 causes the program to hang if we pass a null-string
+      // to std::strxfrm, but only for certain locales :-(
+      // Probably effects Intel and Clang or any compiler using the VC std library (Dinkumware).
+      //
+      if (r == INT_MAX)
+      {
+         result.erase();
+         result.insert(result.begin(), static_cast<wchar_t>(0));
+         return result;
+      }
+#endif
+      result.append(r - s + 3, L' ');
+      s = result.size();
+   }
+   result.erase(r);
+   return result;
+}
+
+inline c_regex_traits<wchar_t>::string_type  c_regex_traits<wchar_t>::transform_primary(const wchar_t* p1, const wchar_t* p2)
+{
+   static wchar_t s_delim;
+   static const int s_collate_type = ::boost::BOOST_REGEX_DETAIL_NS::find_sort_syntax(static_cast<const c_regex_traits<wchar_t>*>(0), &s_delim);
+   std::wstring result;
+   //
+   // What we do here depends upon the format of the sort key returned by
+   // sort key returned by this->transform:
+   //
+   switch (s_collate_type)
+   {
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_C:
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_unknown:
+      // the best we can do is translate to lower case, then get a regular sort key:
+   {
+      result.assign(p1, p2);
+      for (std::wstring::size_type i = 0; i < result.size(); ++i)
+         result[i] = (std::towlower)(result[i]);
+      result = c_regex_traits<wchar_t>::transform(&*result.begin(), &*result.begin() + result.size());
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_fixed:
+   {
+      // get a regular sort key, and then truncate it:
+      result = c_regex_traits<wchar_t>::transform(&*result.begin(), &*result.begin() + result.size());
+      result.erase(s_delim);
+      break;
+   }
+   case ::boost::BOOST_REGEX_DETAIL_NS::sort_delim:
+      // get a regular sort key, and then truncate everything after the delim:
+      result = c_regex_traits<wchar_t>::transform(&*result.begin(), &*result.begin() + result.size());
+      if ((!result.empty()) && (result[0] == s_delim))
+         break;
+      std::size_t i;
+      for (i = 0; i < result.size(); ++i)
+      {
+         if (result[i] == s_delim)
+            break;
+      }
+      result.erase(i);
+      break;
+   }
+   if (result.empty())
+      result = std::wstring(1, char(0));
+   return result;
+}
+
+inline c_regex_traits<wchar_t>::char_class_type  c_regex_traits<wchar_t>::lookup_classname(const wchar_t* p1, const wchar_t* p2)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   static const char_class_type masks[] =
+   {
+      0,
+      char_class_alnum,
+      char_class_alpha,
+      char_class_blank,
+      char_class_cntrl,
+      char_class_digit,
+      char_class_digit,
+      char_class_graph,
+      char_class_horizontal,
+      char_class_lower,
+      char_class_lower,
+      char_class_print,
+      char_class_punct,
+      char_class_space,
+      char_class_space,
+      char_class_upper,
+      char_class_unicode,
+      char_class_upper,
+      char_class_vertical,
+      char_class_alnum | char_class_word,
+      char_class_alnum | char_class_word,
+      char_class_xdigit,
+   };
+
+   int idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(p1, p2);
+   if (idx < 0)
+   {
+      std::wstring s(p1, p2);
+      for (std::wstring::size_type i = 0; i < s.size(); ++i)
+         s[i] = (std::towlower)(s[i]);
+      idx = ::boost::BOOST_REGEX_DETAIL_NS::get_default_class_id(&*s.begin(), &*s.begin() + s.size());
+   }
+   BOOST_REGEX_ASSERT(idx + 1 < static_cast<int>(sizeof(masks) / sizeof(masks[0])));
+   return masks[idx + 1];
+}
+
+inline bool  c_regex_traits<wchar_t>::isctype(wchar_t c, char_class_type mask)
+{
+   using namespace BOOST_REGEX_DETAIL_NS;
+   return
+      ((mask & char_class_space) && (std::iswspace)(c))
+      || ((mask & char_class_print) && (std::iswprint)(c))
+      || ((mask & char_class_cntrl) && (std::iswcntrl)(c))
+      || ((mask & char_class_upper) && (std::iswupper)(c))
+      || ((mask & char_class_lower) && (std::iswlower)(c))
+      || ((mask & char_class_alpha) && (std::iswalpha)(c))
+      || ((mask & char_class_digit) && (std::iswdigit)(c))
+      || ((mask & char_class_punct) && (std::iswpunct)(c))
+      || ((mask & char_class_xdigit) && (std::iswxdigit)(c))
+      || ((mask & char_class_blank) && (std::iswspace)(c) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c))
+      || ((mask & char_class_word) && (c == '_'))
+      || ((mask & char_class_unicode) && (c & ~static_cast<wchar_t>(0xff)))
+      || ((mask & char_class_vertical) && (::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) || (c == L'\v')))
+      || ((mask & char_class_horizontal) && (std::iswspace)(c) && !::boost::BOOST_REGEX_DETAIL_NS::is_separator(c) && (c != L'\v'));
+}
+
+inline c_regex_traits<wchar_t>::string_type  c_regex_traits<wchar_t>::lookup_collatename(const wchar_t* p1, const wchar_t* p2)
+{
+   std::string name;
+   // Usual msvc warning suppression does not work here with std::string template constructor.... use a workaround instead:
+   for (const wchar_t* pos = p1; pos != p2; ++pos)
+      name.push_back((char)*pos);
+   name = ::boost::BOOST_REGEX_DETAIL_NS::lookup_default_collate_name(name);
+   if (!name.empty())
+      return string_type(name.begin(), name.end());
+   if (p2 - p1 == 1)
+      return string_type(1, *p1);
+   return string_type();
+}
+
+inline int  c_regex_traits<wchar_t>::value(wchar_t c, int radix)
+{
+#ifdef BOOST_BORLANDC
+   // workaround for broken wcstol:
+   if ((std::iswxdigit)(c) == 0)
+      return -1;
+#endif
+   wchar_t b[2] = { c, '\0', };
+   wchar_t* ep;
+   int result = std::wcstol(b, &ep, radix);
+   if (ep == b)
+      return -1;
+   return result;
+}
+
+#endif
+
+}
+
+#endif
+
+
+

lib/third_party/boost/regex/include/boost/regex/v5/char_regex_traits.hpp

@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         char_regex_traits.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares deprecated traits classes char_regex_traits<>.
+  */
+
+
+#ifndef BOOST_REGEX_V5_CHAR_REGEX_TRAITS_HPP
+#define BOOST_REGEX_V5_CHAR_REGEX_TRAITS_HPP
+
+namespace boost{
+
+namespace deprecated{
+//
+// class char_regex_traits_i
+// provides case insensitive traits classes (deprecated):
+template <class charT>
+class char_regex_traits_i : public regex_traits<charT> {};
+
+template<>
+class char_regex_traits_i<char> : public regex_traits<char>
+{
+public:
+   typedef char char_type;
+   typedef unsigned char uchar_type;
+   typedef unsigned int size_type;
+   typedef regex_traits<char> base_type;
+
+};
+
+#ifndef BOOST_NO_WREGEX
+template<>
+class char_regex_traits_i<wchar_t> : public regex_traits<wchar_t>
+{
+public:
+   typedef wchar_t char_type;
+   typedef unsigned short uchar_type;
+   typedef unsigned int size_type;
+   typedef regex_traits<wchar_t> base_type;
+
+};
+#endif
+} // namespace deprecated
+} // namespace boost
+
+#endif // include
+

lib/third_party/boost/regex/include/boost/regex/v5/cregex.hpp

@@ -0,0 +1,195 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         cregex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares POSIX API functions
+  *                + boost::RegEx high level wrapper.
+  */
+
+#ifndef BOOST_RE_CREGEX_HPP_INCLUDED
+#define BOOST_RE_CREGEX_HPP_INCLUDED
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+#include <boost/regex/v5/match_flags.hpp>
+#include <boost/regex/v5/error_type.hpp>
+
+#ifndef BOOST_REGEX_STANDALONE
+#if !defined(BOOST_REGEX_NO_LIB) && !defined(BOOST_REGEX_SOURCE) && !defined(BOOST_ALL_NO_LIB) && defined(__cplusplus)
+#  define BOOST_LIB_NAME boost_regex
+#  if defined(BOOST_REGEX_DYN_LINK) || defined(BOOST_ALL_DYN_LINK)
+#     define BOOST_DYN_LINK
+#  endif
+#  ifdef BOOST_REGEX_DIAG
+#     define BOOST_LIB_DIAGNOSTIC
+#  endif
+#  include <boost/config/auto_link.hpp>
+#endif
+#endif
+
+#ifdef __cplusplus
+#include <cstddef>
+#else
+#include <stddef.h>
+#endif
+
+/* include these defs only for POSIX compatablity */
+#ifdef __cplusplus
+namespace boost{
+extern "C" {
+#endif
+
+#if defined(__cplusplus)
+typedef std::ptrdiff_t regoff_t;
+typedef std::size_t regsize_t;
+#else
+typedef ptrdiff_t regoff_t;
+typedef size_t regsize_t;
+#endif
+
+typedef struct
+{
+   unsigned int re_magic;
+#ifdef __cplusplus
+   std::size_t  re_nsub;      /* number of parenthesized subexpressions */
+#else
+   size_t re_nsub; 
+#endif
+   const char*  re_endp;       /* end pointer for REG_PEND */
+   void* guts;                /* none of your business :-) */
+   match_flag_type eflags;        /* none of your business :-) */
+} regex_tA;
+
+#ifndef BOOST_NO_WREGEX
+typedef struct
+{
+   unsigned int re_magic;
+#ifdef __cplusplus
+   std::size_t  re_nsub;         /* number of parenthesized subexpressions */
+#else
+   size_t re_nsub;
+#endif
+   const wchar_t* re_endp;       /* end pointer for REG_PEND */
+   void* guts;                   /* none of your business :-) */
+   match_flag_type eflags;           /* none of your business :-) */
+} regex_tW;
+#endif
+
+typedef struct
+{
+   regoff_t rm_so;      /* start of match */
+   regoff_t rm_eo;      /* end of match */
+} regmatch_t;
+
+/* regcomp() flags */
+typedef enum{
+   REG_BASIC = 0000,
+   REG_EXTENDED = 0001,
+   REG_ICASE = 0002,
+   REG_NOSUB = 0004,
+   REG_NEWLINE = 0010,
+   REG_NOSPEC = 0020,
+   REG_PEND = 0040,
+   REG_DUMP = 0200,
+   REG_NOCOLLATE = 0400,
+   REG_ESCAPE_IN_LISTS = 01000,
+   REG_NEWLINE_ALT = 02000,
+   REG_PERLEX = 04000,
+
+   REG_PERL = REG_EXTENDED | REG_NOCOLLATE | REG_ESCAPE_IN_LISTS | REG_PERLEX,
+   REG_AWK = REG_EXTENDED | REG_ESCAPE_IN_LISTS,
+   REG_GREP = REG_BASIC | REG_NEWLINE_ALT,
+   REG_EGREP = REG_EXTENDED | REG_NEWLINE_ALT,
+
+   REG_ASSERT = 15,
+   REG_INVARG = 16,
+   REG_ATOI = 255,   /* convert name to number (!) */
+   REG_ITOA = 0400   /* convert number to name (!) */
+} reg_comp_flags;
+
+/* regexec() flags */
+typedef enum{
+   REG_NOTBOL =    00001,
+   REG_NOTEOL =    00002,
+   REG_STARTEND =  00004
+} reg_exec_flags;
+
+/*
+ * POSIX error codes:
+ */
+typedef unsigned reg_error_t;
+typedef reg_error_t reg_errcode_t;  /* backwards compatibility */
+
+static const reg_error_t REG_NOERROR = 0;   /* Success.  */
+static const reg_error_t REG_NOMATCH = 1;   /* Didn't find a match (for regexec).  */
+
+  /* POSIX regcomp return error codes.  (In the order listed in the
+     standard.)  */
+static const reg_error_t REG_BADPAT = 2;    /* Invalid pattern.  */
+static const reg_error_t REG_ECOLLATE = 3;  /* Undefined collating element.  */
+static const reg_error_t REG_ECTYPE = 4;    /* Invalid character class name.  */
+static const reg_error_t REG_EESCAPE = 5;   /* Trailing backslash.  */
+static const reg_error_t REG_ESUBREG = 6;   /* Invalid back reference.  */
+static const reg_error_t REG_EBRACK = 7;    /* Unmatched left bracket.  */
+static const reg_error_t REG_EPAREN = 8;    /* Parenthesis imbalance.  */
+static const reg_error_t REG_EBRACE = 9;    /* Unmatched \{.  */
+static const reg_error_t REG_BADBR = 10;    /* Invalid contents of \{\}.  */
+static const reg_error_t REG_ERANGE = 11;   /* Invalid range end.  */
+static const reg_error_t REG_ESPACE = 12;   /* Ran out of memory.  */
+static const reg_error_t REG_BADRPT = 13;   /* No preceding re for repetition op.  */
+static const reg_error_t REG_EEND = 14;     /* unexpected end of expression */
+static const reg_error_t REG_ESIZE = 15;    /* expression too big */
+static const reg_error_t REG_ERPAREN = 8;   /* = REG_EPAREN : unmatched right parenthesis */
+static const reg_error_t REG_EMPTY = 17;    /* empty expression */
+static const reg_error_t REG_E_MEMORY = 15; /* = REG_ESIZE : out of memory */
+static const reg_error_t REG_ECOMPLEXITY = 18; /* complexity too high */
+static const reg_error_t REG_ESTACK = 19;   /* out of stack space */
+static const reg_error_t REG_E_PERL = 20;   /* Perl (?...) error */
+static const reg_error_t REG_E_UNKNOWN = 21; /* unknown error */
+static const reg_error_t REG_ENOSYS = 21;   /* = REG_E_UNKNOWN : Reserved. */
+
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompA(regex_tA*, const char*, int);
+BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorA(int, const regex_tA*, char*, regsize_t);
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecA(const regex_tA*, const char*, regsize_t, regmatch_t*, int);
+BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeA(regex_tA*);
+
+#ifndef BOOST_NO_WREGEX
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompW(regex_tW*, const wchar_t*, int);
+BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorW(int, const regex_tW*, wchar_t*, regsize_t);
+BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecW(const regex_tW*, const wchar_t*, regsize_t, regmatch_t*, int);
+BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeW(regex_tW*);
+#endif
+
+#ifdef UNICODE
+#define regcomp regcompW
+#define regerror regerrorW
+#define regexec regexecW
+#define regfree regfreeW
+#define regex_t regex_tW
+#else
+#define regcomp regcompA
+#define regerror regerrorA
+#define regexec regexecA
+#define regfree regfreeA
+#define regex_t regex_tA
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+} /* namespace */
+#endif
+
+#endif /* include guard */
+

lib/third_party/boost/regex/include/boost/regex/v5/error_type.hpp

@@ -0,0 +1,59 @@
+/*
+ *
+ * Copyright (c) 2003-2005
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         error_type.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression error type enumerator.
+  */
+
+#ifndef BOOST_REGEX_ERROR_TYPE_HPP
+#define BOOST_REGEX_ERROR_TYPE_HPP
+
+#ifdef __cplusplus
+namespace boost{
+#endif
+
+#ifdef __cplusplus
+namespace regex_constants{
+
+enum error_type{
+
+   error_ok = 0,         /* not used */
+   error_no_match = 1,   /* not used */
+   error_bad_pattern = 2,
+   error_collate = 3,
+   error_ctype = 4,
+   error_escape = 5,
+   error_backref = 6,
+   error_brack = 7,
+   error_paren = 8,
+   error_brace = 9,
+   error_badbrace = 10,
+   error_range = 11,
+   error_space = 12,
+   error_badrepeat = 13,
+   error_end = 14,    /* not used */
+   error_size = 15,
+   error_right_paren = 16,  /* not used */
+   error_empty = 17,
+   error_complexity = 18,
+   error_stack = 19,
+   error_perl_extension = 20,
+   error_unknown = 21
+};
+
+}
+}
+#endif /* __cplusplus */
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v5/iterator_category.hpp

@@ -0,0 +1,84 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_match.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Iterator traits for selecting an iterator type as
+  *                an integral constant expression.
+  */
+
+
+#ifndef BOOST_REGEX_ITERATOR_CATEGORY_HPP
+#define BOOST_REGEX_ITERATOR_CATEGORY_HPP
+
+#include <iterator>
+#include <type_traits>
+
+namespace boost{
+namespace detail{
+
+template <class I>
+struct is_random_imp
+{
+private:
+   typedef typename std::iterator_traits<I>::iterator_category cat;
+public:
+   static const bool value = (std::is_convertible<cat*, std::random_access_iterator_tag*>::value);
+};
+
+template <class I>
+struct is_random_pointer_imp
+{
+   static const bool value = true;
+};
+
+template <bool is_pointer_type>
+struct is_random_imp_selector
+{
+   template <class I>
+   struct rebind
+   {
+      typedef is_random_imp<I> type;
+   };
+};
+
+template <>
+struct is_random_imp_selector<true>
+{
+   template <class I>
+   struct rebind
+   {
+      typedef is_random_pointer_imp<I> type;
+   };
+};
+
+}
+
+template <class I>
+struct is_random_access_iterator
+{
+private:
+   typedef detail::is_random_imp_selector< std::is_pointer<I>::value> selector;
+   typedef typename selector::template rebind<I> bound_type;
+   typedef typename bound_type::type answer;
+public:
+   static const bool value = answer::value;
+};
+
+template <class I>
+const bool is_random_access_iterator<I>::value;
+
+}
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v5/iterator_traits.hpp

@@ -0,0 +1,32 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         iterator_traits.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares iterator traits workarounds.
+  */
+
+#ifndef BOOST_REGEX_V5_ITERATOR_TRAITS_HPP
+#define BOOST_REGEX_V5_ITERATOR_TRAITS_HPP
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+template <class T>
+struct regex_iterator_traits : public std::iterator_traits<T> {};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v5/match_flags.hpp

@@ -0,0 +1,156 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         match_flags.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares match_flags type.
+  */
+
+#ifndef BOOST_REGEX_V5_MATCH_FLAGS
+#define BOOST_REGEX_V5_MATCH_FLAGS
+
+#ifdef __cplusplus
+#  include <cstdint>
+#endif
+
+#ifdef __cplusplus
+namespace boost{
+   namespace regex_constants{
+#endif
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#if BOOST_REGEX_MSVC >= 1800
+#pragma warning(disable : 26812)
+#endif
+#endif
+
+typedef enum _match_flags
+{
+   match_default = 0,
+   match_not_bol = 1,                                /* first is not start of line */
+   match_not_eol = match_not_bol << 1,               /* last is not end of line */
+   match_not_bob = match_not_eol << 1,               /* first is not start of buffer */
+   match_not_eob = match_not_bob << 1,               /* last is not end of buffer */
+   match_not_bow = match_not_eob << 1,               /* first is not start of word */
+   match_not_eow = match_not_bow << 1,               /* last is not end of word */
+   match_not_dot_newline = match_not_eow << 1,       /* \n is not matched by '.' */
+   match_not_dot_null = match_not_dot_newline << 1,  /* '\0' is not matched by '.' */
+   match_prev_avail = match_not_dot_null << 1,       /* *--first is a valid expression */
+   match_init = match_prev_avail << 1,               /* internal use */
+   match_any = match_init << 1,                      /* don't care what we match */
+   match_not_null = match_any << 1,                  /* string can't be null */
+   match_continuous = match_not_null << 1,           /* each grep match must continue from */
+                                                     /* uninterrupted from the previous one */
+   match_partial = match_continuous << 1,            /* find partial matches */
+   
+   match_stop = match_partial << 1,                  /* stop after first match (grep) V3 only */
+   match_not_initial_null = match_stop,              /* don't match initial null, V4 only */
+   match_all = match_stop << 1,                      /* must find the whole of input even if match_any is set */
+   match_perl = match_all << 1,                      /* Use perl matching rules */
+   match_posix = match_perl << 1,                    /* Use POSIX matching rules */
+   match_nosubs = match_posix << 1,                  /* don't trap marked subs */
+   match_extra = match_nosubs << 1,                  /* include full capture information for repeated captures */
+   match_single_line = match_extra << 1,             /* treat text as single line and ignore any \n's when matching ^ and $. */
+   match_unused1 = match_single_line << 1,           /* unused */
+   match_unused2 = match_unused1 << 1,               /* unused */
+   match_unused3 = match_unused2 << 1,               /* unused */
+   match_max = match_unused3,
+
+   format_perl = 0,                                  /* perl style replacement */
+   format_default = 0,                               /* ditto. */
+   format_sed = match_max << 1,                      /* sed style replacement. */
+   format_all = format_sed << 1,                     /* enable all extensions to syntax. */
+   format_no_copy = format_all << 1,                 /* don't copy non-matching segments. */
+   format_first_only = format_no_copy << 1,          /* Only replace first occurrence. */
+   format_is_if = format_first_only << 1,            /* internal use only. */
+   format_literal = format_is_if << 1,               /* treat string as a literal */
+
+   match_not_any = match_not_bol | match_not_eol | match_not_bob 
+      | match_not_eob | match_not_bow | match_not_eow | match_not_dot_newline 
+      | match_not_dot_null | match_prev_avail | match_init | match_not_null
+      | match_continuous | match_partial | match_stop | match_not_initial_null 
+      | match_stop | match_all | match_perl | match_posix | match_nosubs
+      | match_extra | match_single_line | match_unused1 | match_unused2 
+      | match_unused3 | match_max | format_perl | format_default | format_sed
+      | format_all | format_no_copy | format_first_only | format_is_if
+      | format_literal
+
+
+} match_flags;
+
+typedef match_flags match_flag_type;
+
+#ifdef __cplusplus
+inline match_flags operator&(match_flags m1, match_flags m2)
+{ return static_cast<match_flags>(static_cast<std::int32_t>(m1) & static_cast<std::int32_t>(m2)); }
+inline match_flags operator|(match_flags m1, match_flags m2)
+{ return static_cast<match_flags>(static_cast<std::int32_t>(m1) | static_cast<std::int32_t>(m2)); }
+inline match_flags operator^(match_flags m1, match_flags m2)
+{ return static_cast<match_flags>(static_cast<std::int32_t>(m1) ^ static_cast<std::int32_t>(m2)); }
+inline match_flags operator~(match_flags m1)
+{ return static_cast<match_flags>(~static_cast<std::int32_t>(m1)); }
+inline match_flags& operator&=(match_flags& m1, match_flags m2)
+{ m1 = m1&m2; return m1; }
+inline match_flags& operator|=(match_flags& m1, match_flags m2)
+{ m1 = m1|m2; return m1; }
+inline match_flags& operator^=(match_flags& m1, match_flags m2)
+{ m1 = m1^m2; return m1; }
+#endif
+
+#ifdef __cplusplus
+} /* namespace regex_constants */
+/*
+ * import names into boost for backwards compatibility:
+ */
+using regex_constants::match_flag_type;
+using regex_constants::match_default;
+using regex_constants::match_not_bol;
+using regex_constants::match_not_eol;
+using regex_constants::match_not_bob;
+using regex_constants::match_not_eob;
+using regex_constants::match_not_bow;
+using regex_constants::match_not_eow;
+using regex_constants::match_not_dot_newline;
+using regex_constants::match_not_dot_null;
+using regex_constants::match_prev_avail;
+/* using regex_constants::match_init; */
+using regex_constants::match_any;
+using regex_constants::match_not_null;
+using regex_constants::match_continuous;
+using regex_constants::match_partial;
+/*using regex_constants::match_stop; */
+using regex_constants::match_all;
+using regex_constants::match_perl;
+using regex_constants::match_posix;
+using regex_constants::match_nosubs;
+using regex_constants::match_extra;
+using regex_constants::match_single_line;
+/*using regex_constants::match_max; */
+using regex_constants::format_all;
+using regex_constants::format_sed;
+using regex_constants::format_perl;
+using regex_constants::format_default;
+using regex_constants::format_no_copy;
+using regex_constants::format_first_only;
+/*using regex_constants::format_is_if;*/
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+
+
+} /* namespace boost */
+#endif /* __cplusplus */
+#endif /* include guard */
+

lib/third_party/boost/regex/include/boost/regex/v5/match_results.hpp

@@ -0,0 +1,667 @@
+/*
+ *
+ * Copyright (c) 1998-2009
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         match_results.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares template class match_results.
+  */
+
+#ifndef BOOST_REGEX_V5_MATCH_RESULTS_HPP
+#define BOOST_REGEX_V5_MATCH_RESULTS_HPP
+
+namespace boost{
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4251 4459)
+#if BOOST_REGEX_MSVC < 1700
+#     pragma warning(disable : 4231)
+#endif
+#  if BOOST_REGEX_MSVC < 1600
+#     pragma warning(disable : 4660)
+#  endif
+#endif
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+class named_subexpressions;
+
+}
+
+template <class BidiIterator, class Allocator>
+class match_results
+{ 
+private:
+   typedef          std::vector<sub_match<BidiIterator>, Allocator> vector_type;
+public: 
+   typedef          sub_match<BidiIterator>                         value_type;
+   typedef typename std::allocator_traits<Allocator>::value_type const &    const_reference;
+   typedef          const_reference                                         reference;
+   typedef typename vector_type::const_iterator                             const_iterator;
+   typedef          const_iterator                                          iterator;
+   typedef typename std::iterator_traits<
+                                    BidiIterator>::difference_type          difference_type;
+   typedef typename std::allocator_traits<Allocator>::size_type             size_type;
+   typedef          Allocator                                               allocator_type;
+   typedef typename std::iterator_traits<
+                                    BidiIterator>::value_type               char_type;
+   typedef          std::basic_string<char_type>                            string_type;
+   typedef          BOOST_REGEX_DETAIL_NS::named_subexpressions             named_sub_type;
+
+   // construct/copy/destroy:
+   explicit match_results(const Allocator& a = Allocator())
+      : m_subs(a), m_base(), m_null(), m_last_closed_paren(0), m_is_singular(true) {}
+   //
+   // IMPORTANT: in the code below, the crazy looking checks around m_is_singular are
+   // all required because it is illegal to copy a singular iterator.
+   // See https://svn.boost.org/trac/boost/ticket/3632.
+   //
+   match_results(const match_results& m)
+      : m_subs(m.m_subs), m_base(), m_null(), m_named_subs(m.m_named_subs), m_last_closed_paren(m.m_last_closed_paren), m_is_singular(m.m_is_singular)
+   {
+      if(!m_is_singular)
+      {
+         m_base = m.m_base;
+         m_null = m.m_null;
+      }
+   }
+   match_results& operator=(const match_results& m)
+   {
+      m_subs = m.m_subs;
+      m_named_subs = m.m_named_subs;
+      m_last_closed_paren = m.m_last_closed_paren;
+      m_is_singular = m.m_is_singular;
+      if(!m_is_singular)
+      {
+         m_base = m.m_base;
+         m_null = m.m_null;
+      }
+      return *this;
+   }
+   ~match_results(){}
+
+   // size:
+   size_type size() const
+   { return empty() ? 0 : m_subs.size() - 2; }
+   size_type max_size() const
+   { return m_subs.max_size(); }
+   bool empty() const
+   { return m_subs.size() < 2; }
+   // element access:
+   difference_type length(int sub = 0) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      sub += 2;
+      if((sub < (int)m_subs.size()) && (sub > 0))
+         return m_subs[sub].length();
+      return 0;
+   }
+   difference_type length(const char_type* sub) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      const char_type* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return length(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT>
+   difference_type length(const charT* sub) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      const charT* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return length(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT, class Traits, class A>
+   difference_type length(const std::basic_string<charT, Traits, A>& sub) const
+   {
+      return length(sub.c_str());
+   }
+   difference_type position(size_type sub = 0) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      sub += 2;
+      if(sub < m_subs.size())
+      {
+         const sub_match<BidiIterator>& s = m_subs[sub];
+         if(s.matched || (sub == 2))
+         {
+            return std::distance((BidiIterator)(m_base), (BidiIterator)(s.first));
+         }
+      }
+      return ~static_cast<difference_type>(0);
+   }
+   difference_type position(const char_type* sub) const
+   {
+      const char_type* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return position(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT>
+   difference_type position(const charT* sub) const
+   {
+      const charT* sub_end = sub;
+      while(*sub_end) ++sub_end;
+      return position(named_subexpression_index(sub, sub_end));
+   }
+   template <class charT, class Traits, class A>
+   difference_type position(const std::basic_string<charT, Traits, A>& sub) const
+   {
+      return position(sub.c_str());
+   }
+   string_type str(int sub = 0) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      sub += 2;
+      string_type result;
+      if(sub < (int)m_subs.size() && (sub > 0))
+      {
+         const sub_match<BidiIterator>& s = m_subs[sub];
+         if(s.matched)
+         {
+            result = s.str();
+         }
+      }
+      return result;
+   }
+   string_type str(const char_type* sub) const
+   {
+      return (*this)[sub].str();
+   }
+   template <class Traits, class A>
+   string_type str(const std::basic_string<char_type, Traits, A>& sub) const
+   {
+      return (*this)[sub].str();
+   }
+   template <class charT>
+   string_type str(const charT* sub) const
+   {
+      return (*this)[sub].str();
+   }
+   template <class charT, class Traits, class A>
+   string_type str(const std::basic_string<charT, Traits, A>& sub) const
+   {
+      return (*this)[sub].str();
+   }
+   const_reference operator[](int sub) const
+   {
+      if(m_is_singular && m_subs.empty())
+         raise_logic_error();
+      sub += 2;
+      if(sub < (int)m_subs.size() && (sub >= 0))
+      {
+         return m_subs[sub];
+      }
+      return m_null;
+   }
+   //
+   // Named sub-expressions:
+   //
+   const_reference named_subexpression(const char_type* i, const char_type* j) const
+   {
+      //
+      // Scan for the leftmost *matched* subexpression with the specified named:
+      //
+      if(m_is_singular)
+         raise_logic_error();
+      BOOST_REGEX_DETAIL_NS::named_subexpressions::range_type r = m_named_subs->equal_range(i, j);
+      while((r.first != r.second) && ((*this)[r.first->index].matched == false))
+         ++r.first;
+      return r.first != r.second ? (*this)[r.first->index] : m_null;
+   }
+   template <class charT>
+   const_reference named_subexpression(const charT* i, const charT* j) const
+   {
+      static_assert(sizeof(charT) <= sizeof(char_type), "Failed internal logic");
+      if(i == j)
+         return m_null;
+      std::vector<char_type> s;
+      while(i != j)
+         s.insert(s.end(), *i++);
+      return named_subexpression(&*s.begin(), &*s.begin() + s.size());
+   }
+   int named_subexpression_index(const char_type* i, const char_type* j) const
+   {
+      //
+      // Scan for the leftmost *matched* subexpression with the specified named.
+      // If none found then return the leftmost expression with that name,
+      // otherwise an invalid index:
+      //
+      if(m_is_singular)
+         raise_logic_error();
+      BOOST_REGEX_DETAIL_NS::named_subexpressions::range_type s, r;
+      s = r = m_named_subs->equal_range(i, j);
+      while((r.first != r.second) && ((*this)[r.first->index].matched == false))
+         ++r.first;
+      if(r.first == r.second)
+         r = s;
+      return r.first != r.second ? r.first->index : -20;
+   }
+   template <class charT>
+   int named_subexpression_index(const charT* i, const charT* j) const
+   {
+      static_assert(sizeof(charT) <= sizeof(char_type), "Failed internal logic");
+      if(i == j)
+         return -20;
+      std::vector<char_type> s;
+      while(i != j)
+         s.insert(s.end(), *i++);
+      return named_subexpression_index(&*s.begin(), &*s.begin() + s.size());
+   }
+   template <class Traits, class A>
+   const_reference operator[](const std::basic_string<char_type, Traits, A>& s) const
+   {
+      return named_subexpression(s.c_str(), s.c_str() + s.size());
+   }
+   const_reference operator[](const char_type* p) const
+   {
+      const char_type* e = p;
+      while(*e) ++e;
+      return named_subexpression(p, e);
+   }
+
+   template <class charT>
+   const_reference operator[](const charT* p) const
+   {
+      static_assert(sizeof(charT) <= sizeof(char_type), "Failed internal logic");
+      if(*p == 0)
+         return m_null;
+      std::vector<char_type> s;
+      while(*p)
+         s.insert(s.end(), *p++);
+      return named_subexpression(&*s.begin(), &*s.begin() + s.size());
+   }
+   template <class charT, class Traits, class A>
+   const_reference operator[](const std::basic_string<charT, Traits, A>& ns) const
+   {
+      static_assert(sizeof(charT) <= sizeof(char_type), "Failed internal logic");
+      if(ns.empty())
+         return m_null;
+      std::vector<char_type> s;
+      for(unsigned i = 0; i < ns.size(); ++i)
+         s.insert(s.end(), ns[i]);
+      return named_subexpression(&*s.begin(), &*s.begin() + s.size());
+   }
+
+   const_reference prefix() const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return (*this)[-1];
+   }
+
+   const_reference suffix() const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return (*this)[-2];
+   }
+   const_iterator begin() const
+   {
+      return (m_subs.size() > 2) ? (m_subs.begin() + 2) : m_subs.end();
+   }
+   const_iterator end() const
+   {
+      return m_subs.end();
+   }
+   // format:
+   template <class OutputIterator, class Functor>
+   OutputIterator format(OutputIterator out,
+                         Functor fmt,
+                         match_flag_type flags = format_default) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, OutputIterator>::type F;
+      F func(fmt);
+      return func(*this, out, flags);
+   }
+   template <class Functor>
+   string_type format(Functor fmt, match_flag_type flags = format_default) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      std::basic_string<char_type> result;
+      BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> > i(result);
+
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> > >::type F;
+      F func(fmt);
+
+      func(*this, i, flags);
+      return result;
+   }
+   // format with locale:
+   template <class OutputIterator, class Functor, class RegexT>
+   OutputIterator format(OutputIterator out,
+                         Functor fmt,
+                         match_flag_type flags,
+                         const RegexT& re) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      typedef ::boost::regex_traits_wrapper<typename RegexT::traits_type> traits_type;
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, OutputIterator, traits_type>::type F;
+      F func(fmt);
+      return func(*this, out, flags, re.get_traits());
+   }
+   template <class RegexT, class Functor>
+   string_type format(Functor fmt,
+                      match_flag_type flags,
+                      const RegexT& re) const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      typedef ::boost::regex_traits_wrapper<typename RegexT::traits_type> traits_type;
+      std::basic_string<char_type> result;
+      BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> > i(result);
+
+      typedef typename BOOST_REGEX_DETAIL_NS::compute_functor_type<Functor, match_results<BidiIterator, Allocator>, BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<char_type> >, traits_type >::type F;
+      F func(fmt);
+
+      func(*this, i, flags, re.get_traits());
+      return result;
+   }
+
+   const_reference get_last_closed_paren()const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return m_last_closed_paren == 0 ? m_null : (*this)[m_last_closed_paren];
+   }
+
+   allocator_type get_allocator() const
+   {
+      return m_subs.get_allocator();
+   }
+   void swap(match_results& that)
+   {
+      std::swap(m_subs, that.m_subs);
+      std::swap(m_named_subs, that.m_named_subs);
+      std::swap(m_last_closed_paren, that.m_last_closed_paren);
+      if(m_is_singular)
+      {
+         if(!that.m_is_singular)
+         {
+            m_base = that.m_base;
+            m_null = that.m_null;
+         }
+      }
+      else if(that.m_is_singular)
+      {
+         that.m_base = m_base;
+         that.m_null = m_null;
+      }
+      else
+      {
+         std::swap(m_base, that.m_base);
+         std::swap(m_null, that.m_null);
+      }
+      std::swap(m_is_singular, that.m_is_singular);
+   }
+   bool operator==(const match_results& that)const
+   {
+      if(m_is_singular)
+      {
+         return that.m_is_singular;
+      }
+      else if(that.m_is_singular)
+      {
+         return false;
+      }
+      return (m_subs == that.m_subs) && (m_base == that.m_base) && (m_last_closed_paren == that.m_last_closed_paren);
+   }
+   bool operator!=(const match_results& that)const
+   { return !(*this == that); }
+
+#ifdef BOOST_REGEX_MATCH_EXTRA
+   typedef typename sub_match<BidiIterator>::capture_sequence_type capture_sequence_type;
+
+   const capture_sequence_type& captures(int i)const
+   {
+      if(m_is_singular)
+         raise_logic_error();
+      return (*this)[i].captures();
+   }
+#endif
+
+   //
+   // private access functions:
+   void  set_second(BidiIterator i)
+   {
+      BOOST_REGEX_ASSERT(m_subs.size() > 2);
+      m_subs[2].second = i;
+      m_subs[2].matched = true;
+      m_subs[0].first = i;
+      m_subs[0].matched = (m_subs[0].first != m_subs[0].second);
+      m_null.first = i;
+      m_null.second = i;
+      m_null.matched = false;
+      m_is_singular = false;
+   }
+
+   void  set_second(BidiIterator i, size_type pos, bool m = true, bool escape_k = false)
+   {
+      if(pos)
+         m_last_closed_paren = static_cast<int>(pos);
+      pos += 2;
+      BOOST_REGEX_ASSERT(m_subs.size() > pos);
+      m_subs[pos].second = i;
+      m_subs[pos].matched = m;
+      if((pos == 2) && !escape_k)
+      {
+         m_subs[0].first = i;
+         m_subs[0].matched = (m_subs[0].first != m_subs[0].second);
+         m_null.first = i;
+         m_null.second = i;
+         m_null.matched = false;
+         m_is_singular = false;
+      }
+   }
+   void  set_size(size_type n, BidiIterator i, BidiIterator j)
+   {
+      value_type v(j);
+      size_type len = m_subs.size();
+      if(len > n + 2)
+      {
+         m_subs.erase(m_subs.begin()+n+2, m_subs.end());
+         std::fill(m_subs.begin(), m_subs.end(), v);
+      }
+      else
+      {
+         std::fill(m_subs.begin(), m_subs.end(), v);
+         if(n+2 != len)
+            m_subs.insert(m_subs.end(), n+2-len, v);
+      }
+      m_subs[1].first = i;
+      m_last_closed_paren = 0;
+   }
+   void  set_base(BidiIterator pos)
+   {
+      m_base = pos;
+   }
+   BidiIterator base()const
+   {
+      return m_base;
+   }
+   void  set_first(BidiIterator i)
+   {
+      BOOST_REGEX_ASSERT(m_subs.size() > 2);
+      // set up prefix:
+      m_subs[1].second = i;
+      m_subs[1].matched = (m_subs[1].first != i);
+      // set up $0:
+      m_subs[2].first = i;
+      // zero out everything else:
+      for(size_type n = 3; n < m_subs.size(); ++n)
+      {
+         m_subs[n].first = m_subs[n].second = m_subs[0].second;
+         m_subs[n].matched = false;
+      }
+   }
+   void  set_first(BidiIterator i, size_type pos, bool escape_k = false)
+   {
+      BOOST_REGEX_ASSERT(pos+2 < m_subs.size());
+      if(pos || escape_k)
+      {
+         m_subs[pos+2].first = i;
+         if(escape_k)
+         {
+            m_subs[1].second = i;
+            m_subs[1].matched = (m_subs[1].first != m_subs[1].second);
+         }
+      }
+      else
+         set_first(i);
+   }
+   void  maybe_assign(const match_results<BidiIterator, Allocator>& m);
+
+   void  set_named_subs(std::shared_ptr<named_sub_type> subs)
+   {
+      m_named_subs = subs;
+   }
+
+private:
+   //
+   // Error handler called when an uninitialized match_results is accessed:
+   //
+   static void raise_logic_error()
+   {
+      std::logic_error e("Attempt to access an uninitialized boost::match_results<> class.");
+#ifndef BOOST_REGEX_STANDALONE
+      boost::throw_exception(e);
+#else
+      throw e;
+#endif
+   }
+
+
+   vector_type            m_subs;                      // subexpressions
+   BidiIterator   m_base;                              // where the search started from
+   sub_match<BidiIterator> m_null;                     // a null match
+   std::shared_ptr<named_sub_type> m_named_subs;     // Shared copy of named subs in the regex object
+   int m_last_closed_paren;                            // Last ) to be seen - used for formatting
+   bool m_is_singular;                                 // True if our stored iterators are singular
+};
+
+template <class BidiIterator, class Allocator>
+void  match_results<BidiIterator, Allocator>::maybe_assign(const match_results<BidiIterator, Allocator>& m)
+{
+   if(m_is_singular)
+   {
+      *this = m;
+      return;
+   }
+   const_iterator p1, p2;
+   p1 = begin();
+   p2 = m.begin();
+   //
+   // Distances are measured from the start of *this* match, unless this isn't
+   // a valid match in which case we use the start of the whole sequence.  Note that
+   // no subsequent match-candidate can ever be to the left of the first match found.
+   // This ensures that when we are using bidirectional iterators, that distances 
+   // measured are as short as possible, and therefore as efficient as possible
+   // to compute.  Finally note that we don't use the "matched" data member to test
+   // whether a sub-expression is a valid match, because partial matches set this
+   // to false for sub-expression 0.
+   //
+   BidiIterator l_end = this->suffix().second;
+   BidiIterator l_base = (p1->first == l_end) ? this->prefix().first : (*this)[0].first;
+   difference_type len1 = 0;
+   difference_type len2 = 0;
+   difference_type base1 = 0;
+   difference_type base2 = 0;
+   std::size_t i;
+   for(i = 0; i < size(); ++i, ++p1, ++p2)
+   {
+      //
+      // Leftmost takes priority over longest; handle special cases
+      // where distances need not be computed first (an optimisation
+      // for bidirectional iterators: ensure that we don't accidently
+      // compute the length of the whole sequence, as this can be really
+      // expensive).
+      //
+      if(p1->first == l_end)
+      {
+         if(p2->first != l_end)
+         {
+            // p2 must be better than p1, and no need to calculate
+            // actual distances:
+            base1 = 1;
+            base2 = 0;
+            break;
+         }
+         else
+         {
+            // *p1 and *p2 are either unmatched or match end-of sequence,
+            // either way no need to calculate distances:
+            if((p1->matched == false) && (p2->matched == true))
+               break;
+            if((p1->matched == true) && (p2->matched == false))
+               return;
+            continue;
+         }
+      }
+      else if(p2->first == l_end)
+      {
+         // p1 better than p2, and no need to calculate distances:
+         return;
+      }
+      base1 = std::distance(l_base, p1->first);
+      base2 = std::distance(l_base, p2->first);
+      BOOST_REGEX_ASSERT(base1 >= 0);
+      BOOST_REGEX_ASSERT(base2 >= 0);
+      if(base1 < base2) return;
+      if(base2 < base1) break;
+
+      len1 = std::distance((BidiIterator)p1->first, (BidiIterator)p1->second);
+      len2 = std::distance((BidiIterator)p2->first, (BidiIterator)p2->second);
+      BOOST_REGEX_ASSERT(len1 >= 0);
+      BOOST_REGEX_ASSERT(len2 >= 0);
+      if((len1 != len2) || ((p1->matched == false) && (p2->matched == true)))
+         break;
+      if((p1->matched == true) && (p2->matched == false))
+         return;
+   }
+   if(i == size())
+      return;
+   if(base2 < base1)
+      *this = m;
+   else if((len2 > len1) || ((p1->matched == false) && (p2->matched == true)) )
+      *this = m;
+}
+
+template <class BidiIterator, class Allocator>
+void swap(match_results<BidiIterator, Allocator>& a, match_results<BidiIterator, Allocator>& b)
+{
+   a.swap(b);
+}
+
+template <class charT, class traits, class BidiIterator, class Allocator>
+std::basic_ostream<charT, traits>&
+   operator << (std::basic_ostream<charT, traits>& os,
+                const match_results<BidiIterator, Allocator>& s)
+{
+   return (os << s.str());
+}
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+} // namespace boost
+
+#endif
+
+

lib/third_party/boost/regex/include/boost/regex/v5/mem_block_cache.hpp

@@ -0,0 +1,173 @@
+ /*
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         mem_block_cache.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: memory block cache used by the non-recursive matcher.
+  */
+
+#ifndef BOOST_REGEX_V5_MEM_BLOCK_CACHE_HPP
+#define BOOST_REGEX_V5_MEM_BLOCK_CACHE_HPP
+
+#include <new>
+#ifdef BOOST_HAS_THREADS
+#include <mutex>
+#endif
+
+#ifndef BOOST_NO_CXX11_HDR_ATOMIC
+  #include <atomic>
+  #if ATOMIC_POINTER_LOCK_FREE == 2
+    #define BOOST_REGEX_MEM_BLOCK_CACHE_LOCK_FREE
+    #define BOOST_REGEX_ATOMIC_POINTER std::atomic
+  #endif
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+#if BOOST_REGEX_MAX_CACHE_BLOCKS != 0
+#ifdef BOOST_REGEX_MEM_BLOCK_CACHE_LOCK_FREE /* lock free implementation */
+struct mem_block_cache
+{
+  std::atomic<void*> cache[BOOST_REGEX_MAX_CACHE_BLOCKS];
+
+   ~mem_block_cache()
+   {
+     for (size_t i = 0;i < BOOST_REGEX_MAX_CACHE_BLOCKS; ++i) {
+       if (cache[i].load()) ::operator delete(cache[i].load());
+     }
+   }
+   void* get()
+   {
+     for (size_t i = 0;i < BOOST_REGEX_MAX_CACHE_BLOCKS; ++i) {
+       void* p = cache[i].load();
+       if (p != NULL) {
+         if (cache[i].compare_exchange_strong(p, NULL)) return p;
+       }
+     }
+     return ::operator new(BOOST_REGEX_BLOCKSIZE);
+   }
+   void put(void* ptr)
+   {
+     for (size_t i = 0;i < BOOST_REGEX_MAX_CACHE_BLOCKS; ++i) {
+       void* p = cache[i].load();
+       if (p == NULL) {
+         if (cache[i].compare_exchange_strong(p, ptr)) return;
+       }
+     }
+     ::operator delete(ptr);
+   }
+
+   static mem_block_cache& instance()
+   {
+      static mem_block_cache block_cache = { { {nullptr} } };
+      return block_cache;
+   }
+};
+
+
+#else /* lock-based implementation */
+
+
+struct mem_block_node
+{
+   mem_block_node* next;
+};
+
+struct mem_block_cache
+{
+   // this member has to be statically initialsed:
+   mem_block_node* next { nullptr };
+   unsigned cached_blocks { 0 };
+#ifdef BOOST_HAS_THREADS
+   std::mutex mut;
+#endif
+
+   ~mem_block_cache()
+   {
+      while(next)
+      {
+         mem_block_node* old = next;
+         next = next->next;
+         ::operator delete(old);
+      }
+   }
+   void* get()
+   {
+#ifdef BOOST_HAS_THREADS
+      std::lock_guard<std::mutex> g(mut);
+#endif
+     if(next)
+      {
+         mem_block_node* result = next;
+         next = next->next;
+         --cached_blocks;
+         return result;
+      }
+      return ::operator new(BOOST_REGEX_BLOCKSIZE);
+   }
+   void put(void* p)
+   {
+#ifdef BOOST_HAS_THREADS
+      std::lock_guard<std::mutex> g(mut);
+#endif
+      if(cached_blocks >= BOOST_REGEX_MAX_CACHE_BLOCKS)
+      {
+         ::operator delete(p);
+      }
+      else
+      {
+         mem_block_node* old = static_cast<mem_block_node*>(p);
+         old->next = next;
+         next = old;
+         ++cached_blocks;
+      }
+   }
+   static mem_block_cache& instance()
+   {
+      static mem_block_cache block_cache;
+      return block_cache;
+   }
+};
+#endif
+#endif
+
+#if BOOST_REGEX_MAX_CACHE_BLOCKS == 0
+
+inline void*  get_mem_block()
+{
+   return ::operator new(BOOST_REGEX_BLOCKSIZE);
+}
+
+inline void  put_mem_block(void* p)
+{
+   ::operator delete(p);
+}
+
+#else
+
+inline void*  get_mem_block()
+{
+   return mem_block_cache::instance().get();
+}
+
+inline void  put_mem_block(void* p)
+{
+   mem_block_cache::instance().put(p);
+}
+
+#endif
+}
+} // namespace boost
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v5/object_cache.hpp

@@ -0,0 +1,160 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         object_cache.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Implements a generic object cache.
+  */
+
+#ifndef BOOST_REGEX_OBJECT_CACHE_HPP
+#define BOOST_REGEX_OBJECT_CACHE_HPP
+
+#include <boost/regex/config.hpp>
+#include <memory>
+#include <map>
+#include <list>
+#include <stdexcept>
+#include <string>
+#ifdef BOOST_HAS_THREADS
+#include <mutex>
+#endif
+
+namespace boost{
+
+template <class Key, class Object>
+class object_cache
+{
+public:
+   typedef std::pair< ::std::shared_ptr<Object const>, Key const*> value_type;
+   typedef std::list<value_type> list_type;
+   typedef typename list_type::iterator list_iterator;
+   typedef std::map<Key, list_iterator> map_type;
+   typedef typename map_type::iterator map_iterator;
+   typedef typename list_type::size_type size_type;
+   static std::shared_ptr<Object const> get(const Key& k, size_type l_max_cache_size);
+
+private:
+   static std::shared_ptr<Object const> do_get(const Key& k, size_type l_max_cache_size);
+
+   struct data
+   {
+      list_type   cont;
+      map_type    index;
+   };
+
+   // Needed by compilers not implementing the resolution to DR45. For reference,
+   // see http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#45.
+   friend struct data;
+};
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4702)
+#endif
+template <class Key, class Object>
+std::shared_ptr<Object const> object_cache<Key, Object>::get(const Key& k, size_type l_max_cache_size)
+{
+#ifdef BOOST_HAS_THREADS
+   static std::mutex mut;
+   std::lock_guard<std::mutex> l(mut);
+   return do_get(k, l_max_cache_size);
+#else
+   return do_get(k, l_max_cache_size);
+#endif
+}
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+
+template <class Key, class Object>
+std::shared_ptr<Object const> object_cache<Key, Object>::do_get(const Key& k, size_type l_max_cache_size)
+{
+   typedef typename object_cache<Key, Object>::data object_data;
+   typedef typename map_type::size_type map_size_type;
+   static object_data s_data;
+
+   //
+   // see if the object is already in the cache:
+   //
+   map_iterator mpos = s_data.index.find(k);
+   if(mpos != s_data.index.end())
+   {
+      //
+      // Eureka! 
+      // We have a cached item, bump it up the list and return it:
+      //
+      if(--(s_data.cont.end()) != mpos->second)
+      {
+         // splice out the item we want to move:
+         list_type temp;
+         temp.splice(temp.end(), s_data.cont, mpos->second);
+         // and now place it at the end of the list:
+         s_data.cont.splice(s_data.cont.end(), temp, temp.begin());
+         BOOST_REGEX_ASSERT(*(s_data.cont.back().second) == k);
+         // update index with new position:
+         mpos->second = --(s_data.cont.end());
+         BOOST_REGEX_ASSERT(&(mpos->first) == mpos->second->second);
+         BOOST_REGEX_ASSERT(&(mpos->first) == s_data.cont.back().second);
+      }
+      return s_data.cont.back().first;
+   }
+   //
+   // if we get here then the item is not in the cache,
+   // so create it:
+   //
+   std::shared_ptr<Object const> result(new Object(k));
+   //
+   // Add it to the list, and index it:
+   //
+   s_data.cont.push_back(value_type(result, static_cast<Key const*>(0)));
+   s_data.index.insert(std::make_pair(k, --(s_data.cont.end())));
+   s_data.cont.back().second = &(s_data.index.find(k)->first);
+   map_size_type s = s_data.index.size();
+   BOOST_REGEX_ASSERT(s_data.index[k]->first.get() == result.get());
+   BOOST_REGEX_ASSERT(&(s_data.index.find(k)->first) == s_data.cont.back().second);
+   BOOST_REGEX_ASSERT(s_data.index.find(k)->first == k);
+   if(s > l_max_cache_size)
+   {
+      //
+      // We have too many items in the list, so we need to start
+      // popping them off the back of the list, but only if they're
+      // being held uniquely by us:
+      //
+      list_iterator pos = s_data.cont.begin();
+      list_iterator last = s_data.cont.end();
+      while((pos != last) && (s > l_max_cache_size))
+      {
+         if(pos->first.use_count() == 1)
+         {
+            list_iterator condemmed(pos);
+            ++pos;
+            // now remove the items from our containers, 
+            // then order has to be as follows:
+            BOOST_REGEX_ASSERT(s_data.index.find(*(condemmed->second)) != s_data.index.end());
+            s_data.index.erase(*(condemmed->second));
+            s_data.cont.erase(condemmed); 
+            --s;
+         }
+         else
+            ++pos;
+      }
+      BOOST_REGEX_ASSERT(s_data.index[k]->first.get() == result.get());
+      BOOST_REGEX_ASSERT(&(s_data.index.find(k)->first) == s_data.cont.back().second);
+      BOOST_REGEX_ASSERT(s_data.index.find(k)->first == k);
+   }
+   return result;
+}
+
+}
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v5/pattern_except.hpp

@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         pattern_except.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares pattern-matching exception classes.
+  */
+
+#ifndef BOOST_RE_V5_PAT_EXCEPT_HPP
+#define BOOST_RE_V5_PAT_EXCEPT_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#include <cstddef>
+#include <stdexcept>
+#include <boost/regex/v5/error_type.hpp>
+#include <boost/regex/v5/regex_traits_defaults.hpp>
+
+namespace boost{
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4275)
+#if BOOST_REGEX_MSVC >= 1800
+#pragma warning(disable : 26812 4459)
+#endif
+#endif
+class regex_error : public std::runtime_error
+{
+public:
+   explicit regex_error(const std::string& s, regex_constants::error_type err = regex_constants::error_unknown, std::ptrdiff_t pos = 0)
+      : std::runtime_error(s)
+      , m_error_code(err)
+      , m_position(pos)
+   {
+   }
+   explicit regex_error(regex_constants::error_type err)
+      : std::runtime_error(::boost::BOOST_REGEX_DETAIL_NS::get_default_error_string(err))
+      , m_error_code(err)
+      , m_position(0)
+   {
+   }
+   ~regex_error() noexcept override {}
+   regex_constants::error_type code()const
+   { return m_error_code; }
+   std::ptrdiff_t position()const
+   { return m_position; }
+   void raise()const 
+   {
+#ifndef BOOST_NO_EXCEPTIONS
+#ifndef BOOST_REGEX_STANDALONE
+      ::boost::throw_exception(*this);
+#else
+      throw* this;
+#endif
+#endif
+   }
+private:
+   regex_constants::error_type m_error_code;
+   std::ptrdiff_t m_position;
+};
+
+typedef regex_error bad_pattern;
+typedef regex_error bad_expression;
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+template <class E>
+inline void raise_runtime_error(const E& ex)
+{
+#ifndef BOOST_REGEX_STANDALONE
+   ::boost::throw_exception(ex);
+#else
+   throw ex;
+#endif
+}
+
+template <class traits>
+void raise_error(const traits& t, regex_constants::error_type code)
+{
+   (void)t;  // warning suppression
+   regex_error e(t.error_string(code), code, 0);
+   ::boost::BOOST_REGEX_DETAIL_NS::raise_runtime_error(e);
+}
+
+}
+
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v5/perl_matcher.hpp

@@ -0,0 +1,576 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+#ifndef BOOST_REGEX_MATCHER_HPP
+#define BOOST_REGEX_MATCHER_HPP
+
+#include <boost/regex/v5/iterator_category.hpp>
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#pragma warning(disable : 4251 4459)
+#if BOOST_REGEX_MSVC < 1700
+#     pragma warning(disable : 4231)
+#endif
+#  if BOOST_REGEX_MSVC < 1600
+#     pragma warning(disable : 4660)
+#  endif
+#if BOOST_REGEX_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+//
+// error checking API:
+//
+inline void  verify_options(boost::regex_constants::syntax_option_type, match_flag_type mf)
+{
+   //
+   // can't mix match_extra with POSIX matching rules:
+   //
+   if ((mf & match_extra) && (mf & match_posix))
+   {
+      std::logic_error msg("Usage Error: Can't mix regular expression captures with POSIX matching rules");
+#ifndef BOOST_REGEX_STANDALONE
+      throw_exception(msg);
+#else
+      throw msg;
+#endif
+   }
+}
+//
+// function can_start:
+//
+template <class charT>
+inline bool can_start(charT c, const unsigned char* map, unsigned char mask)
+{
+   return ((c < static_cast<charT>(0)) ? true : ((c >= static_cast<charT>(1 << CHAR_BIT)) ? true : map[c] & mask));
+}
+inline bool can_start(char c, const unsigned char* map, unsigned char mask)
+{
+   return map[(unsigned char)c] & mask;
+}
+inline bool can_start(signed char c, const unsigned char* map, unsigned char mask)
+{
+   return map[(unsigned char)c] & mask;
+}
+inline bool can_start(unsigned char c, const unsigned char* map, unsigned char mask)
+{
+   return map[c] & mask;
+}
+inline bool can_start(unsigned short c, const unsigned char* map, unsigned char mask)
+{
+   return ((c >= (1 << CHAR_BIT)) ? true : map[c] & mask);
+}
+#if defined(WCHAR_MIN) && (WCHAR_MIN == 0) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+inline bool can_start(wchar_t c, const unsigned char* map, unsigned char mask)
+{
+   return ((c >= static_cast<wchar_t>(1u << CHAR_BIT)) ? true : map[c] & mask);
+}
+#endif
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+inline bool can_start(unsigned int c, const unsigned char* map, unsigned char mask)
+{
+   return (((c >= static_cast<unsigned int>(1u << CHAR_BIT)) ? true : map[c] & mask));
+}
+#endif
+
+template <class C, class T, class A>
+inline int string_compare(const std::basic_string<C,T,A>& s, const C* p)
+{ 
+   if(0 == *p)
+   {
+      if(s.empty() || ((s.size() == 1) && (s[0] == 0)))
+         return 0;
+   }
+   return s.compare(p); 
+}
+template <class Seq, class C>
+inline int string_compare(const Seq& s, const C* p)
+{
+   std::size_t i = 0;
+   while((i < s.size()) && (p[i] == s[i]))
+   {
+      ++i;
+   }
+   return (i == s.size()) ? -(int)p[i] : (int)s[i] - (int)p[i];
+}
+# define STR_COMP(s,p) string_compare(s,p)
+
+template<class charT>
+inline const charT* re_skip_past_null(const charT* p)
+{
+  while (*p != static_cast<charT>(0)) ++p;
+  return ++p;
+}
+
+template <class iterator, class charT, class traits_type, class char_classT>
+iterator  re_is_set_member(iterator next, 
+                          iterator last, 
+                          const re_set_long<char_classT>* set_, 
+                          const regex_data<charT, traits_type>& e, bool icase)
+{   
+   const charT* p = reinterpret_cast<const charT*>(set_+1);
+   iterator ptr;
+   unsigned int i;
+   //bool icase = e.m_flags & regex_constants::icase;
+
+   if(next == last) return next;
+
+   typedef typename traits_type::string_type traits_string_type;
+   const ::boost::regex_traits_wrapper<traits_type>& traits_inst = *(e.m_ptraits);
+   
+   // dwa 9/13/00 suppress incorrect MSVC warning - it claims this is never
+   // referenced
+   (void)traits_inst;
+
+   // try and match a single character, could be a multi-character
+   // collating element...
+   for(i = 0; i < set_->csingles; ++i)
+   {
+      ptr = next;
+      if(*p == static_cast<charT>(0))
+      {
+         // treat null string as special case:
+         if(traits_inst.translate(*ptr, icase))
+         {
+            ++p;
+            continue;
+         }
+         return set_->isnot ? next : (ptr == next) ? ++next : ptr;
+      }
+      else
+      {
+         while(*p && (ptr != last))
+         {
+            if(traits_inst.translate(*ptr, icase) != *p)
+               break;
+            ++p;
+            ++ptr;
+         }
+
+         if(*p == static_cast<charT>(0)) // if null we've matched
+            return set_->isnot ? next : (ptr == next) ? ++next : ptr;
+
+         p = re_skip_past_null(p);     // skip null
+      }
+   }
+
+   charT col = traits_inst.translate(*next, icase);
+
+
+   if(set_->cranges || set_->cequivalents)
+   {
+      traits_string_type s1;
+      //
+      // try and match a range, NB only a single character can match
+      if(set_->cranges)
+      {
+         if((e.m_flags & regex_constants::collate) == 0)
+            s1.assign(1, col);
+         else
+         {
+            charT a[2] = { col, charT(0), };
+            s1 = traits_inst.transform(a, a + 1);
+         }
+         for(i = 0; i < set_->cranges; ++i)
+         {
+            if(STR_COMP(s1, p) >= 0)
+            {
+               do{ ++p; }while(*p);
+               ++p;
+               if(STR_COMP(s1, p) <= 0)
+                  return set_->isnot ? next : ++next;
+            }
+            else
+            {
+               // skip first string
+               do{ ++p; }while(*p);
+               ++p;
+            }
+            // skip second string
+            do{ ++p; }while(*p);
+            ++p;
+         }
+      }
+      //
+      // try and match an equivalence class, NB only a single character can match
+      if(set_->cequivalents)
+      {
+         charT a[2] = { col, charT(0), };
+         s1 = traits_inst.transform_primary(a, a +1);
+         for(i = 0; i < set_->cequivalents; ++i)
+         {
+            if(STR_COMP(s1, p) == 0)
+               return set_->isnot ? next : ++next;
+            // skip string
+            do{ ++p; }while(*p);
+            ++p;
+         }
+      }
+   }
+   if(traits_inst.isctype(col, set_->cclasses) == true)
+      return set_->isnot ? next : ++next;
+   if((set_->cnclasses != 0) && (traits_inst.isctype(col, set_->cnclasses) == false))
+      return set_->isnot ? next : ++next;
+   return set_->isnot ? ++next : next;
+}
+
+template <class BidiIterator>
+class repeater_count
+{
+   repeater_count** stack;
+   repeater_count* next;
+   int state_id;
+   std::size_t count;        // the number of iterations so far
+   BidiIterator start_pos;   // where the last repeat started
+
+   repeater_count* unwind_until(int n, repeater_count* p, int current_recursion_id)
+   { 
+      while(p && (p->state_id != n))
+      {
+         if(-2 - current_recursion_id == p->state_id)
+            return 0;
+         p = p->next;
+         if(p && (p->state_id < 0))
+         {
+            p = unwind_until(p->state_id, p, current_recursion_id);
+            if(!p)
+               return p;
+            p = p->next;
+         }
+      }
+      return p;
+   }
+public:
+   repeater_count(repeater_count** s) : stack(s), next(0), state_id(-1), count(0), start_pos() {}
+   
+   repeater_count(int i, repeater_count** s, BidiIterator start, int current_recursion_id)
+      : start_pos(start)
+   {
+      state_id = i;
+      stack = s;
+      next = *stack;
+      *stack = this;
+      if((state_id > next->state_id) && (next->state_id >= 0))
+         count = 0;
+      else
+      {
+         repeater_count* p = next;
+         p = unwind_until(state_id, p, current_recursion_id);
+         if(p)
+         {
+            count = p->count;
+            start_pos = p->start_pos;
+         }
+         else
+            count = 0;
+      }
+   }
+   ~repeater_count()
+   {
+      if(next)
+         *stack = next;
+   }
+   std::size_t get_count() { return count; }
+   int get_id() { return state_id; }
+   std::size_t operator++() { return ++count; }
+   bool check_null_repeat(const BidiIterator& pos, std::size_t max)
+   {
+      // this is called when we are about to start a new repeat,
+      // if the last one was NULL move our count to max,
+      // otherwise save the current position.
+      bool result = (count == 0) ? false : (pos == start_pos);
+      if(result)
+         count = max;
+      else
+         start_pos = pos;
+      return result;
+   }
+};
+
+struct saved_state;
+
+enum saved_state_type
+{
+   saved_type_end = 0,
+   saved_type_paren = 1,
+   saved_type_recurse = 2,
+   saved_type_assertion = 3,
+   saved_state_alt = 4,
+   saved_state_repeater_count = 5,
+   saved_state_extra_block = 6,
+   saved_state_greedy_single_repeat = 7,
+   saved_state_rep_slow_dot = 8,
+   saved_state_rep_fast_dot = 9,
+   saved_state_rep_char = 10,
+   saved_state_rep_short_set = 11,
+   saved_state_rep_long_set = 12,
+   saved_state_non_greedy_long_repeat = 13, 
+   saved_state_count = 14
+};
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#if BOOST_REGEX_MSVC >= 1800
+#pragma warning(disable:26495)
+#endif
+#endif
+template <class Results>
+struct recursion_info
+{
+   typedef typename Results::value_type value_type;
+   typedef typename value_type::iterator iterator;
+   int idx;
+   const re_syntax_base* preturn_address;
+   Results results;
+   repeater_count<iterator>* repeater_stack;
+   iterator location_of_start;
+};
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+
+template <class BidiIterator, class Allocator, class traits>
+class perl_matcher
+{
+public:
+   typedef typename traits::char_type char_type;
+   typedef perl_matcher<BidiIterator, Allocator, traits> self_type;
+   typedef bool (self_type::*matcher_proc_type)();
+   typedef std::size_t traits_size_type;
+   typedef typename is_byte<char_type>::width_type width_type;
+   typedef typename std::iterator_traits<BidiIterator>::difference_type difference_type;
+   typedef match_results<BidiIterator, Allocator> results_type;
+
+   perl_matcher(BidiIterator first, BidiIterator end, 
+      match_results<BidiIterator, Allocator>& what, 
+      const basic_regex<char_type, traits>& e,
+      match_flag_type f,
+      BidiIterator l_base)
+      :  m_result(what), base(first), last(end), 
+         position(first), backstop(l_base), re(e), traits_inst(e.get_traits()), 
+         m_independent(false), next_count(&rep_obj), rep_obj(&next_count)
+      , m_recursions(0)
+   {
+      construct_init(e, f);
+   }
+
+   bool match();
+   bool find();
+
+   void setf(match_flag_type f)
+   { m_match_flags |= f; }
+   void unsetf(match_flag_type f)
+   { m_match_flags &= ~f; }
+
+private:
+   void construct_init(const basic_regex<char_type, traits>& e, match_flag_type f);
+
+   bool find_imp();
+   bool match_imp();
+   void estimate_max_state_count(std::random_access_iterator_tag*);
+   void estimate_max_state_count(void*);
+   bool match_prefix();
+   bool match_all_states();
+
+   // match procs, stored in s_match_vtable:
+   bool match_startmark();
+   bool match_endmark();
+   bool match_literal();
+   bool match_start_line();
+   bool match_end_line();
+   bool match_wild();
+   bool match_match();
+   bool match_word_boundary();
+   bool match_within_word();
+   bool match_word_start();
+   bool match_word_end();
+   bool match_buffer_start();
+   bool match_buffer_end();
+   bool match_backref();
+   bool match_long_set();
+   bool match_set();
+   bool match_jump();
+   bool match_alt();
+   bool match_rep();
+   bool match_combining();
+   bool match_soft_buffer_end();
+   bool match_restart_continue();
+   bool match_long_set_repeat();
+   bool match_set_repeat();
+   bool match_char_repeat();
+   bool match_dot_repeat_fast();
+   bool match_dot_repeat_slow();
+   bool match_dot_repeat_dispatch()
+   {
+      return ::boost::is_random_access_iterator<BidiIterator>::value ? match_dot_repeat_fast() : match_dot_repeat_slow();
+   }
+   bool match_backstep();
+   bool match_assert_backref();
+   bool match_toggle_case();
+   bool match_recursion();
+   bool match_fail();
+   bool match_accept();
+   bool match_commit();
+   bool match_then();
+   bool skip_until_paren(int index, bool match = true);
+
+   // find procs stored in s_find_vtable:
+   bool find_restart_any();
+   bool find_restart_word();
+   bool find_restart_line();
+   bool find_restart_buf();
+   bool find_restart_lit();
+
+private:
+   // final result structure to be filled in:
+   match_results<BidiIterator, Allocator>& m_result;
+   // temporary result for POSIX matches:
+   std::unique_ptr<match_results<BidiIterator, Allocator> > m_temp_match;
+   // pointer to actual result structure to fill in:
+   match_results<BidiIterator, Allocator>* m_presult;
+   // start of sequence being searched:
+   BidiIterator base;
+   // end of sequence being searched:
+   BidiIterator last; 
+   // current character being examined:
+   BidiIterator position;
+   // where to restart next search after failed match attempt:
+   BidiIterator restart;
+   // where the current search started from, acts as base for $` during grep:
+   BidiIterator search_base;
+   // how far we can go back when matching lookbehind:
+   BidiIterator backstop;
+   // the expression being examined:
+   const basic_regex<char_type, traits>& re;
+   // the expression's traits class:
+   const ::boost::regex_traits_wrapper<traits>& traits_inst;
+   // the next state in the machine being matched:
+   const re_syntax_base* pstate;
+   // matching flags in use:
+   match_flag_type m_match_flags;
+   // how many states we have examined so far:
+   std::ptrdiff_t state_count;
+   // max number of states to examine before giving up:
+   std::ptrdiff_t max_state_count;
+   // whether we should ignore case or not:
+   bool icase;
+   // set to true when (position == last), indicates that we may have a partial match:
+   bool m_has_partial_match;
+   // set to true whenever we get a match:
+   bool m_has_found_match;
+   // set to true whenever we're inside an independent sub-expression:
+   bool m_independent;
+   // the current repeat being examined:
+   repeater_count<BidiIterator>* next_count;
+   // the first repeat being examined (top of linked list):
+   repeater_count<BidiIterator> rep_obj;
+   // the mask to pass when matching word boundaries:
+   typename traits::char_class_type m_word_mask;
+   // the bitmask to use when determining whether a match_any matches a newline or not:
+   unsigned char match_any_mask;
+   // recursion information:
+   std::vector<recursion_info<results_type> > recursion_stack;
+   //
+   // additional members for non-recursive version:
+   //
+   typedef bool (self_type::*unwind_proc_type)(bool);
+
+   void extend_stack();
+   bool unwind(bool);
+   bool unwind_end(bool);
+   bool unwind_paren(bool);
+   bool unwind_recursion_stopper(bool);
+   bool unwind_assertion(bool);
+   bool unwind_alt(bool);
+   bool unwind_repeater_counter(bool);
+   bool unwind_extra_block(bool);
+   bool unwind_greedy_single_repeat(bool);
+   bool unwind_slow_dot_repeat(bool);
+   bool unwind_fast_dot_repeat(bool);
+   bool unwind_char_repeat(bool);
+   bool unwind_short_set_repeat(bool);
+   bool unwind_long_set_repeat(bool);
+   bool unwind_non_greedy_repeat(bool);
+   bool unwind_recursion(bool);
+   bool unwind_recursion_pop(bool);
+   bool unwind_commit(bool);
+   bool unwind_then(bool);
+   bool unwind_case(bool);
+   void destroy_single_repeat();
+   void push_matched_paren(int index, const sub_match<BidiIterator>& sub);
+   void push_recursion_stopper();
+   void push_assertion(const re_syntax_base* ps, bool positive);
+   void push_alt(const re_syntax_base* ps);
+   void push_repeater_count(int i, repeater_count<BidiIterator>** s);
+   void push_single_repeat(std::size_t c, const re_repeat* r, BidiIterator last_position, int state_id);
+   void push_non_greedy_repeat(const re_syntax_base* ps);
+   void push_recursion(int idx, const re_syntax_base* p, results_type* presults, results_type* presults2);
+   void push_recursion_pop();
+   void push_case_change(bool);
+
+   // pointer to base of stack:
+   saved_state* m_stack_base;
+   // pointer to current stack position:
+   saved_state* m_backup_state;
+   // how many memory blocks have we used up?:
+   unsigned used_block_count;
+   // determines what value to return when unwinding from recursion,
+   // allows for mixed recursive/non-recursive algorithm:
+   bool m_recursive_result;
+   // We have unwound to a lookahead/lookbehind, used by COMMIT/PRUNE/SKIP:
+   bool m_unwound_lookahead;
+   // We have unwound to an alternative, used by THEN:
+   bool m_unwound_alt;
+   // We are unwinding a commit - used by independent subs to determine whether to stop there or carry on unwinding:
+   //bool m_unwind_commit;
+   // Recursion limit:
+   unsigned m_recursions;
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#if BOOST_REGEX_MSVC >= 1800
+#pragma warning(disable:26495)
+#endif
+#endif
+   // these operations aren't allowed, so are declared private,
+   // bodies are provided to keep explicit-instantiation requests happy:
+   perl_matcher& operator=(const perl_matcher&)
+   {
+      return *this;
+   }
+   perl_matcher(const perl_matcher& that)
+      : m_result(that.m_result), re(that.re), traits_inst(that.traits_inst), rep_obj(0) {}
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+
+} // namespace boost
+
+//
+// include the implementation of perl_matcher:
+//
+#include <boost/regex/v5/perl_matcher_non_recursive.hpp>
+// this one has to be last:
+#include <boost/regex/v5/perl_matcher_common.hpp>
+
+#endif

lib/third_party/boost/regex/include/boost/regex/v5/perl_matcher_common.hpp

@@ -0,0 +1,921 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         perl_matcher_common.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Definitions of perl_matcher member functions that are 
+  *                common to both the recursive and non-recursive versions.
+  */
+
+#ifndef BOOST_REGEX_V5_PERL_MATCHER_COMMON_HPP
+#define BOOST_REGEX_V5_PERL_MATCHER_COMMON_HPP
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#pragma warning(disable:4459)
+#if BOOST_REGEX_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace boost{
+namespace BOOST_REGEX_DETAIL_NS{
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#pragma warning(disable:26812)
+#endif
+   template <class BidiIterator, class Allocator, class traits>
+void perl_matcher<BidiIterator, Allocator, traits>::construct_init(const basic_regex<char_type, traits>& e, match_flag_type f)
+{ 
+   typedef typename std::iterator_traits<BidiIterator>::iterator_category category;
+   typedef typename basic_regex<char_type, traits>::flag_type expression_flag_type;
+   
+   if(e.empty())
+   {
+      // precondition failure: e is not a valid regex.
+      std::invalid_argument ex("Invalid regular expression object");
+#ifndef BOOST_REGEX_STANDALONE
+      boost::throw_exception(ex);
+#else
+      throw e;
+#endif
+   }
+   pstate = 0;
+   m_match_flags = f;
+   estimate_max_state_count(static_cast<category*>(0));
+   expression_flag_type re_f = re.flags();
+   icase = re_f & regex_constants::icase;
+   if(!(m_match_flags & (match_perl|match_posix)))
+   {
+      if((re_f & (regbase::main_option_type|regbase::no_perl_ex)) == 0)
+         m_match_flags |= match_perl;
+      else if((re_f & (regbase::main_option_type|regbase::emacs_ex)) == (regbase::basic_syntax_group|regbase::emacs_ex))
+         m_match_flags |= match_perl;
+      else if((re_f & (regbase::main_option_type|regbase::literal)) == (regbase::literal))
+         m_match_flags |= match_perl;
+      else
+         m_match_flags |= match_posix;
+   }
+   if(m_match_flags & match_posix)
+   {
+      m_temp_match.reset(new match_results<BidiIterator, Allocator>());
+      m_presult = m_temp_match.get();
+   }
+   else
+      m_presult = &m_result;
+   m_stack_base = 0;
+   m_backup_state = 0;
+   // find the value to use for matching word boundaries:
+   m_word_mask = re.get_data().m_word_mask; 
+   // find bitmask to use for matching '.':
+   match_any_mask = static_cast<unsigned char>((f & match_not_dot_newline) ? BOOST_REGEX_DETAIL_NS::test_not_newline : BOOST_REGEX_DETAIL_NS::test_newline);
+   // Disable match_any if requested in the state machine:
+   if(e.get_data().m_disable_match_any)
+      m_match_flags &= regex_constants::match_not_any;
+}
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+
+template <class BidiIterator, class Allocator, class traits>
+void perl_matcher<BidiIterator, Allocator, traits>::estimate_max_state_count(std::random_access_iterator_tag*)
+{
+   //
+   // How many states should we allow our machine to visit before giving up?
+   // This is a heuristic: it takes the greater of O(N^2) and O(NS^2)
+   // where N is the length of the string, and S is the number of states
+   // in the machine.  It's tempting to up this to O(N^2S) or even O(N^2S^2)
+   // but these take unreasonably amounts of time to bale out in pathological
+   // cases.
+   //
+   // Calculate NS^2 first:
+   //
+   static const std::ptrdiff_t k = 100000;
+   std::ptrdiff_t dist = std::distance(base, last);
+   if(dist == 0)
+      dist = 1;
+   std::ptrdiff_t states = re.size();
+   if(states == 0)
+      states = 1;
+   if ((std::numeric_limits<std::ptrdiff_t>::max)() / states < states)
+   {
+      max_state_count = (std::min)((std::ptrdiff_t)BOOST_REGEX_MAX_STATE_COUNT, (std::numeric_limits<std::ptrdiff_t>::max)() - 2);
+      return;
+   }
+   states *= states;
+   if((std::numeric_limits<std::ptrdiff_t>::max)() / dist < states)
+   {
+      max_state_count = (std::min)((std::ptrdiff_t)BOOST_REGEX_MAX_STATE_COUNT, (std::numeric_limits<std::ptrdiff_t>::max)() - 2);
+      return;
+   }
+   states *= dist;
+   if((std::numeric_limits<std::ptrdiff_t>::max)() - k < states)
+   {
+      max_state_count = (std::min)((std::ptrdiff_t)BOOST_REGEX_MAX_STATE_COUNT, (std::numeric_limits<std::ptrdiff_t>::max)() - 2);
+      return;
+   }
+   states += k;
+
+   max_state_count = states;
+
+   //
+   // Now calculate N^2:
+   //
+   states = dist;
+   if((std::numeric_limits<std::ptrdiff_t>::max)() / dist < states)
+   {
+      max_state_count = (std::min)((std::ptrdiff_t)BOOST_REGEX_MAX_STATE_COUNT, (std::numeric_limits<std::ptrdiff_t>::max)() - 2);
+      return;
+   }
+   states *= dist;
+   if((std::numeric_limits<std::ptrdiff_t>::max)() - k < states)
+   {
+      max_state_count = (std::min)((std::ptrdiff_t)BOOST_REGEX_MAX_STATE_COUNT, (std::numeric_limits<std::ptrdiff_t>::max)() - 2);
+      return;
+   }
+   states += k;
+   //
+   // N^2 can be a very large number indeed, to prevent things getting out
+   // of control, cap the max states:
+   //
+   if(states > BOOST_REGEX_MAX_STATE_COUNT)
+      states = BOOST_REGEX_MAX_STATE_COUNT;
+   //
+   // If (the possibly capped) N^2 is larger than our first estimate,
+   // use this instead:
+   //
+   if(states > max_state_count)
+      max_state_count = states;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+inline void perl_matcher<BidiIterator, Allocator, traits>::estimate_max_state_count(void*)
+{
+   // we don't know how long the sequence is:
+   max_state_count = BOOST_REGEX_MAX_STATE_COUNT;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+inline bool perl_matcher<BidiIterator, Allocator, traits>::match()
+{
+   return match_imp();
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_imp()
+{
+   // initialise our stack if we are non-recursive:
+   save_state_init init(&m_stack_base, &m_backup_state);
+   used_block_count = BOOST_REGEX_MAX_BLOCKS;
+#if !defined(BOOST_NO_EXCEPTIONS)
+   try{
+#endif
+
+   // reset our state machine:
+   position = base;
+   search_base = base;
+   state_count = 0;
+   m_match_flags |= regex_constants::match_all;
+   m_presult->set_size((m_match_flags & match_nosubs) ? 1u : static_cast<typename results_type::size_type>(1u + re.mark_count()), search_base, last);
+   m_presult->set_base(base);
+   m_presult->set_named_subs(this->re.get_named_subs());
+   if(m_match_flags & match_posix)
+      m_result = *m_presult;
+   verify_options(re.flags(), m_match_flags);
+   if(0 == match_prefix())
+      return false;
+   return (m_result[0].second == last) && (m_result[0].first == base);
+
+#if !defined(BOOST_NO_EXCEPTIONS)
+   }
+   catch(...)
+   {
+      // unwind all pushed states, apart from anything else this
+      // ensures that all the states are correctly destructed
+      // not just the memory freed.
+      while(unwind(true)){}
+      throw;
+   }
+#endif
+}
+
+template <class BidiIterator, class Allocator, class traits>
+inline bool perl_matcher<BidiIterator, Allocator, traits>::find()
+{
+   return find_imp();
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::find_imp()
+{
+   static matcher_proc_type const s_find_vtable[7] = 
+   {
+      &perl_matcher<BidiIterator, Allocator, traits>::find_restart_any,
+      &perl_matcher<BidiIterator, Allocator, traits>::find_restart_word,
+      &perl_matcher<BidiIterator, Allocator, traits>::find_restart_line,
+      &perl_matcher<BidiIterator, Allocator, traits>::find_restart_buf,
+      &perl_matcher<BidiIterator, Allocator, traits>::match_prefix,
+      &perl_matcher<BidiIterator, Allocator, traits>::find_restart_lit,
+      &perl_matcher<BidiIterator, Allocator, traits>::find_restart_lit,
+   };
+
+   // initialise our stack if we are non-recursive:
+   save_state_init init(&m_stack_base, &m_backup_state);
+   used_block_count = BOOST_REGEX_MAX_BLOCKS;
+#if !defined(BOOST_NO_EXCEPTIONS)
+   try{
+#endif
+
+   state_count = 0;
+   if((m_match_flags & regex_constants::match_init) == 0)
+   {
+      // reset our state machine:
+      search_base = position = base;
+      pstate = re.get_first_state();
+      m_presult->set_size((m_match_flags & match_nosubs) ? 1u : static_cast<typename results_type::size_type>(1u + re.mark_count()), base, last);
+      m_presult->set_base(base);
+      m_presult->set_named_subs(this->re.get_named_subs());
+      m_match_flags |= regex_constants::match_init;
+   }
+   else
+   {
+      // start again:
+      search_base = position = m_result[0].second;
+      // If last match was null and match_not_null was not set then increment
+      // our start position, otherwise we go into an infinite loop:
+      if(((m_match_flags & match_not_null) == 0) && (m_result.length() == 0))
+      {
+         if(position == last)
+            return false;
+         else 
+            ++position;
+      }
+      // reset $` start:
+      m_presult->set_size((m_match_flags & match_nosubs) ? 1u : static_cast<typename results_type::size_type>(1u + re.mark_count()), search_base, last);
+      //if((base != search_base) && (base == backstop))
+      //   m_match_flags |= match_prev_avail;
+   }
+   if(m_match_flags & match_posix)
+   {
+      m_result.set_size(static_cast<typename results_type::size_type>(1u + re.mark_count()), base, last);
+      m_result.set_base(base);
+   }
+
+   verify_options(re.flags(), m_match_flags);
+   // find out what kind of expression we have:
+   unsigned type = (m_match_flags & match_continuous) ? 
+      static_cast<unsigned int>(regbase::restart_continue) 
+         : static_cast<unsigned int>(re.get_restart_type());
+
+   // call the appropriate search routine:
+   matcher_proc_type proc = s_find_vtable[type];
+   return (this->*proc)();
+
+#if !defined(BOOST_NO_EXCEPTIONS)
+   }
+   catch(...)
+   {
+      // unwind all pushed states, apart from anything else this
+      // ensures that all the states are correctly destructed
+      // not just the memory freed.
+      while(unwind(true)){}
+      throw;
+   }
+#endif
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_prefix()
+{
+   m_has_partial_match = false;
+   m_has_found_match = false;
+   pstate = re.get_first_state();
+   m_presult->set_first(position);
+   restart = position;
+   match_all_states();
+   if(!m_has_found_match && m_has_partial_match && (m_match_flags & match_partial))
+   {
+      m_has_found_match = true;
+      m_presult->set_second(last, 0, false);
+      position = last;
+      if((m_match_flags & match_posix) == match_posix)
+      {
+         m_result.maybe_assign(*m_presult);
+      }
+   }
+#ifdef BOOST_REGEX_MATCH_EXTRA
+   if(m_has_found_match && (match_extra & m_match_flags))
+   {
+      //
+      // we have a match, reverse the capture information:
+      //
+      for(unsigned i = 0; i < m_presult->size(); ++i)
+      {
+         typename sub_match<BidiIterator>::capture_sequence_type & seq = ((*m_presult)[i]).get_captures();
+         std::reverse(seq.begin(), seq.end());
+      }
+   }
+#endif
+   if(!m_has_found_match)
+      position = restart; // reset search postion
+   return m_has_found_match;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_literal()
+{
+   unsigned int len = static_cast<const re_literal*>(pstate)->length;
+   const char_type* what = reinterpret_cast<const char_type*>(static_cast<const re_literal*>(pstate) + 1);
+   //
+   // compare string with what we stored in
+   // our records:
+   for(unsigned int i = 0; i < len; ++i, ++position)
+   {
+      if((position == last) || (traits_inst.translate(*position, icase) != what[i]))
+         return false;
+   }
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_start_line()
+{
+   if(position == backstop)
+   {
+      if((m_match_flags & match_prev_avail) == 0)
+      {
+         if((m_match_flags & match_not_bol) == 0)
+         {
+            pstate = pstate->next.p;
+            return true;
+         }
+         return false;
+      }
+   }
+   else if(m_match_flags & match_single_line)
+      return false;
+
+   // check the previous value character:
+   BidiIterator t(position);
+   --t;
+   if(position != last)
+   {
+      if(is_separator(*t) && !((*t == static_cast<char_type>('\r')) && (*position == static_cast<char_type>('\n'))) )
+      {
+         pstate = pstate->next.p;
+         return true;
+      }
+   }
+   else if(is_separator(*t))
+   {
+      pstate = pstate->next.p;
+      return true;
+   }
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_end_line()
+{
+   if(position != last)
+   {
+      if(m_match_flags & match_single_line)
+         return false;
+      // we're not yet at the end so *first is always valid:
+      if(is_separator(*position))
+      {
+         if((position != backstop) || (m_match_flags & match_prev_avail))
+         {
+            // check that we're not in the middle of \r\n sequence
+            BidiIterator t(position);
+            --t;
+            if((*t == static_cast<char_type>('\r')) && (*position == static_cast<char_type>('\n')))
+            {
+               return false;
+            }
+         }
+         pstate = pstate->next.p;
+         return true;
+      }
+   }
+   else if((m_match_flags & match_not_eol) == 0)
+   {
+      pstate = pstate->next.p;
+      return true;
+   }
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_wild()
+{
+   if(position == last) 
+      return false;
+   if(is_separator(*position) && ((match_any_mask & static_cast<const re_dot*>(pstate)->mask) == 0))
+      return false;
+   if((*position == char_type(0)) && (m_match_flags & match_not_dot_null))
+      return false;
+   pstate = pstate->next.p;
+   ++position;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_word_boundary()
+{
+   bool b; // indcates whether next character is a word character
+   if(position != last)
+   {
+      // prev and this character must be opposites:
+      b = traits_inst.isctype(*position, m_word_mask);
+   }
+   else
+   {
+      if (m_match_flags & match_not_eow)
+         return false;
+      b = false;
+   }
+   if((position == backstop) && ((m_match_flags & match_prev_avail) == 0))
+   {
+      if(m_match_flags & match_not_bow)
+         return false;
+      else
+         b ^= false;
+   }
+   else
+   {
+      --position;
+      b ^= traits_inst.isctype(*position, m_word_mask);
+      ++position;
+   }
+   if(b)
+   {
+      pstate = pstate->next.p;
+      return true;
+   }
+   return false; // no match if we get to here...
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_within_word()
+{
+   bool b = !match_word_boundary();
+   if(b)
+      pstate = pstate->next.p;
+   return b;
+   /*
+   if(position == last)
+      return false;
+   // both prev and this character must be m_word_mask:
+   bool prev = traits_inst.isctype(*position, m_word_mask);
+   {
+      bool b;
+      if((position == backstop) && ((m_match_flags & match_prev_avail) == 0)) 
+         return false;
+      else
+      {
+         --position;
+         b = traits_inst.isctype(*position, m_word_mask);
+         ++position;
+      }
+      if(b == prev)
+      {
+         pstate = pstate->next.p;
+         return true;
+      }
+   }
+   return false;
+   */
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_word_start()
+{
+   if(position == last)
+      return false; // can't be starting a word if we're already at the end of input
+   if(!traits_inst.isctype(*position, m_word_mask))
+      return false; // next character isn't a word character
+   if((position == backstop) && ((m_match_flags & match_prev_avail) == 0))
+   {
+      if(m_match_flags & match_not_bow)
+         return false; // no previous input
+   }
+   else
+   {
+      // otherwise inside buffer:
+      BidiIterator t(position);
+      --t;
+      if(traits_inst.isctype(*t, m_word_mask))
+         return false; // previous character not non-word
+   }
+   // OK we have a match:
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_word_end()
+{
+   if((position == backstop) && ((m_match_flags & match_prev_avail) == 0))
+      return false;  // start of buffer can't be end of word
+   BidiIterator t(position);
+   --t;
+   if(traits_inst.isctype(*t, m_word_mask) == false)
+      return false;  // previous character wasn't a word character
+
+   if(position == last)
+   {
+      if(m_match_flags & match_not_eow)
+         return false; // end of buffer but not end of word
+   }
+   else
+   {
+      // otherwise inside buffer:
+      if(traits_inst.isctype(*position, m_word_mask))
+         return false; // next character is a word character
+   }
+   pstate = pstate->next.p;
+   return true;      // if we fall through to here then we've succeeded
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_buffer_start()
+{
+   if((position != backstop) || (m_match_flags & match_not_bob))
+      return false;
+   // OK match:
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_buffer_end()
+{
+   if((position != last) || (m_match_flags & match_not_eob))
+      return false;
+   // OK match:
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_backref()
+{
+   //
+   // Compare with what we previously matched.
+   // Note that this succeeds if the backref did not partisipate
+   // in the match, this is in line with ECMAScript, but not Perl
+   // or PCRE.
+   //
+   int index = static_cast<const re_brace*>(pstate)->index;
+   if(index >= hash_value_mask)
+   {
+      named_subexpressions::range_type r = re.get_data().equal_range(index);
+      BOOST_REGEX_ASSERT(r.first != r.second);
+      do
+      {
+         index = r.first->index;
+         ++r.first;
+      }while((r.first != r.second) && ((*m_presult)[index].matched != true));
+   }
+
+   if((m_match_flags & match_perl) && !(*m_presult)[index].matched)
+      return false;
+
+   BidiIterator i = (*m_presult)[index].first;
+   BidiIterator j = (*m_presult)[index].second;
+   while(i != j)
+   {
+      if((position == last) || (traits_inst.translate(*position, icase) != traits_inst.translate(*i, icase)))
+         return false;
+      ++i;
+      ++position;
+   }
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_long_set()
+{
+   typedef typename traits::char_class_type char_class_type;
+   // let the traits class do the work:
+   if(position == last)
+      return false;
+   BidiIterator t = re_is_set_member(position, last, static_cast<const re_set_long<char_class_type>*>(pstate), re.get_data(), icase);
+   if(t != position)
+   {
+      pstate = pstate->next.p;
+      position = t;
+      return true;
+   }
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_set()
+{
+   if(position == last)
+      return false;
+   if(static_cast<const re_set*>(pstate)->_map[static_cast<unsigned char>(traits_inst.translate(*position, icase))])
+   {
+      pstate = pstate->next.p;
+      ++position;
+      return true;
+   }
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_jump()
+{
+   pstate = static_cast<const re_jump*>(pstate)->alt.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_combining()
+{
+   if(position == last)
+      return false;
+   if(is_combining(traits_inst.translate(*position, icase)))
+      return false;
+   ++position;
+   while((position != last) && is_combining(traits_inst.translate(*position, icase)))
+      ++position;
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_soft_buffer_end()
+{
+   if(m_match_flags & match_not_eob)
+      return false;
+   BidiIterator p(position);
+   while((p != last) && is_separator(traits_inst.translate(*p, icase)))++p;
+   if(p != last)
+      return false;
+   pstate = pstate->next.p;
+   return true;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_restart_continue()
+{
+   if(position == search_base)
+   {
+      pstate = pstate->next.p;
+      return true;
+   }
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_backstep()
+{
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable:4127)
+#endif
+   if( ::boost::is_random_access_iterator<BidiIterator>::value)
+   {
+      std::ptrdiff_t maxlen = std::distance(backstop, position);
+      if(maxlen < static_cast<const re_brace*>(pstate)->index)
+         return false;
+      std::advance(position, -static_cast<const re_brace*>(pstate)->index);
+   }
+   else
+   {
+      int c = static_cast<const re_brace*>(pstate)->index;
+      while(c--)
+      {
+         if(position == backstop)
+            return false;
+         --position;
+      }
+   }
+   pstate = pstate->next.p;
+   return true;
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+}
+
+template <class BidiIterator, class Allocator, class traits>
+inline bool perl_matcher<BidiIterator, Allocator, traits>::match_assert_backref()
+{
+   // return true if marked sub-expression N has been matched:
+   int index = static_cast<const re_brace*>(pstate)->index;
+   bool result = false;
+   if(index == 9999)
+   {
+      // Magic value for a (DEFINE) block:
+      return false;
+   }
+   else if(index > 0)
+   {
+      // Have we matched subexpression "index"?
+      // Check if index is a hash value:
+      if(index >= hash_value_mask)
+      {
+         named_subexpressions::range_type r = re.get_data().equal_range(index);
+         while(r.first != r.second)
+         {
+            if((*m_presult)[r.first->index].matched)
+            {
+               result = true;
+               break;
+            }
+            ++r.first;
+         }
+      }
+      else
+      {
+         result = (*m_presult)[index].matched;
+      }
+      pstate = pstate->next.p;
+   }
+   else
+   {
+      // Have we recursed into subexpression "index"?
+      // If index == 0 then check for any recursion at all, otherwise for recursion to -index-1.
+      int idx = -(index+1);
+      if(idx >= hash_value_mask)
+      {
+         named_subexpressions::range_type r = re.get_data().equal_range(idx);
+         int stack_index = recursion_stack.empty() ? -1 : recursion_stack.back().idx;
+         while(r.first != r.second)
+         {
+            result |= (stack_index == r.first->index);
+            if(result)break;
+            ++r.first;
+         }
+      }
+      else
+      {
+         result = !recursion_stack.empty() && ((recursion_stack.back().idx == idx) || (index == 0));
+      }
+      pstate = pstate->next.p;
+   }
+   return result;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_fail()
+{
+   // Just force a backtrack:
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::match_accept()
+{
+   if(!recursion_stack.empty())
+   {
+      return skip_until_paren(recursion_stack.back().idx);
+   }
+   else
+   {
+      return skip_until_paren(INT_MAX);
+   }
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::find_restart_any()
+{
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable:4127)
+#endif
+   const unsigned char* _map = re.get_map();
+   while(true)
+   {
+      // skip everything we can't match:
+      while((position != last) && !can_start(*position, _map, (unsigned char)mask_any) )
+         ++position;
+      if(position == last)
+      {
+         // run out of characters, try a null match if possible:
+         if(re.can_be_null())
+            return match_prefix();
+         break;
+      }
+      // now try and obtain a match:
+      if(match_prefix())
+         return true;
+      if(position == last)
+         return false;
+      ++position;
+   }
+   return false;
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::find_restart_word()
+{
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(push)
+#pragma warning(disable:4127)
+#endif
+   // do search optimised for word starts:
+   const unsigned char* _map = re.get_map();
+   if((m_match_flags & match_prev_avail) || (position != base))
+      --position;
+   else if(match_prefix())
+      return true;
+   do
+   {
+      while((position != last) && traits_inst.isctype(*position, m_word_mask))
+         ++position;
+      while((position != last) && !traits_inst.isctype(*position, m_word_mask))
+         ++position;
+      if(position == last)
+         break;
+
+      if(can_start(*position, _map, (unsigned char)mask_any) )
+      {
+         if(match_prefix())
+            return true;
+      }
+      if(position == last)
+         break;
+   } while(true);
+   return false;
+#ifdef BOOST_REGEX_MSVC
+#pragma warning(pop)
+#endif
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::find_restart_line()
+{
+   // do search optimised for line starts:
+   const unsigned char* _map = re.get_map();
+   if(match_prefix())
+      return true;
+   while(position != last)
+   {
+      while((position != last) && !is_separator(*position))
+         ++position;
+      if(position == last)
+         return false;
+      ++position;
+      if(position == last)
+      {
+         if(re.can_be_null() && match_prefix())
+            return true;
+         return false;
+      }
+
+      if( can_start(*position, _map, (unsigned char)mask_any) )
+      {
+         if(match_prefix())
+            return true;
+      }
+      if(position == last)
+         return false;
+      //++position;
+   }
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::find_restart_buf()
+{
+   if((position == base) && ((m_match_flags & match_not_bob) == 0))
+      return match_prefix();
+   return false;
+}
+
+template <class BidiIterator, class Allocator, class traits>
+bool perl_matcher<BidiIterator, Allocator, traits>::find_restart_lit()
+{
+   return false;
+}
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+} // namespace boost
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v5/primary_transform.hpp

@@ -0,0 +1,120 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE:        primary_transform.hpp
+  *   VERSION:     see <boost/version.hpp>
+  *   DESCRIPTION: Heuristically determines the sort string format in use
+  *                by the current locale.
+  */
+
+#ifndef BOOST_REGEX_PRIMARY_TRANSFORM
+#define BOOST_REGEX_PRIMARY_TRANSFORM
+
+namespace boost{
+   namespace BOOST_REGEX_DETAIL_NS{
+
+
+enum{
+   sort_C,
+   sort_fixed,
+   sort_delim,
+   sort_unknown
+};
+
+template <class S, class charT>
+unsigned count_chars(const S& s, charT c)
+{
+   //
+   // Count how many occurrences of character c occur
+   // in string s: if c is a delimeter between collation
+   // fields, then this should be the same value for all
+   // sort keys:
+   //
+   unsigned int count = 0;
+   for(unsigned pos = 0; pos < s.size(); ++pos)
+   {
+      if(s[pos] == c) ++count;
+   }
+   return count;
+}
+
+
+template <class traits, class charT>
+unsigned find_sort_syntax(const traits* pt, charT* delim)
+{
+   //
+   // compare 'a' with 'A' to see how similar they are,
+   // should really use a-accute but we can't portably do that,
+   //
+   typedef typename traits::string_type string_type;
+   typedef typename traits::char_type char_type;
+
+   // Suppress incorrect warning for MSVC
+   (void)pt;
+
+   char_type a[2] = {'a', '\0', };
+   string_type sa(pt->transform(a, a+1));
+   if(sa == a)
+   {
+      *delim = 0;
+      return sort_C;
+   }
+   char_type A[2] = { 'A', '\0', };
+   string_type sA(pt->transform(A, A+1));
+   char_type c[2] = { ';', '\0', };
+   string_type sc(pt->transform(c, c+1));
+
+   int pos = 0;
+   while((pos <= static_cast<int>(sa.size())) && (pos <= static_cast<int>(sA.size())) && (sa[pos] == sA[pos])) ++pos;
+   --pos;
+   if(pos < 0)
+   {
+      *delim = 0;
+      return sort_unknown;
+   }
+   //
+   // at this point sa[pos] is either the end of a fixed width field
+   // or the character that acts as a delimiter:
+   //
+   charT maybe_delim = sa[pos];
+   if((pos != 0) && (count_chars(sa, maybe_delim) == count_chars(sA, maybe_delim)) && (count_chars(sa, maybe_delim) == count_chars(sc, maybe_delim)))
+   {
+      *delim = maybe_delim;
+      return sort_delim;
+   }
+   //
+   // OK doen't look like a delimiter, try for fixed width field:
+   //
+   if((sa.size() == sA.size()) && (sa.size() == sc.size()))
+   {
+      // note assumes that the fixed width field is less than
+      // (numeric_limits<charT>::max)(), should be true for all types
+      // I can't imagine 127 character fields...
+      *delim = static_cast<charT>(++pos);
+      return sort_fixed;
+   }
+   //
+   // don't know what it is:
+   //
+   *delim = 0;
+   return sort_unknown;
+}
+
+
+   } // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+#endif
+
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regbase.hpp

@@ -0,0 +1,158 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regbase.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares class regbase.
+  */
+
+#ifndef BOOST_REGEX_V5_REGBASE_HPP
+#define BOOST_REGEX_V5_REGBASE_HPP
+
+namespace boost{
+//
+// class regbase
+// handles error codes and flags
+//
+class regbase
+{
+public:
+   enum flag_type_
+   {
+      //
+      // Divide the flags up into logical groups:
+      // bits 0-7 indicate main synatx type.
+      // bits 8-15 indicate syntax subtype.
+      // bits 16-31 indicate options that are common to all
+      // regex syntaxes.
+      // In all cases the default is 0.
+      //
+      // Main synatx group:
+      //
+      perl_syntax_group = 0,                      // default
+      basic_syntax_group = 1,                     // POSIX basic
+      literal = 2,                                // all characters are literals
+      main_option_type = literal | basic_syntax_group | perl_syntax_group, // everything!
+      //
+      // options specific to perl group:
+      //
+      no_bk_refs = 1 << 8,                        // \d not allowed
+      no_perl_ex = 1 << 9,                        // disable perl extensions
+      no_mod_m = 1 << 10,                         // disable Perl m modifier
+      mod_x = 1 << 11,                            // Perl x modifier
+      mod_s = 1 << 12,                            // force s modifier on (overrides match_not_dot_newline)
+      no_mod_s = 1 << 13,                         // force s modifier off (overrides match_not_dot_newline)
+
+      //
+      // options specific to basic group:
+      //
+      no_char_classes = 1 << 8,                   // [[:CLASS:]] not allowed
+      no_intervals = 1 << 9,                      // {x,y} not allowed
+      bk_plus_qm = 1 << 10,                       // uses \+ and \?
+      bk_vbar = 1 << 11,                          // use \| for alternatives
+      emacs_ex = 1 << 12,                         // enables emacs extensions
+
+      //
+      // options common to all groups:
+      //
+      no_escape_in_lists = 1 << 16,                     // '\' not special inside [...]
+      newline_alt = 1 << 17,                            // \n is the same as |
+      no_except = 1 << 18,                              // no exception on error
+      failbit = 1 << 19,                                // error flag
+      icase = 1 << 20,                                  // characters are matched regardless of case
+      nocollate = 0,                                    // don't use locale specific collation (deprecated)
+      collate = 1 << 21,                                // use locale specific collation
+      nosubs = 1 << 22,                                 // don't mark sub-expressions
+      save_subexpression_location = 1 << 23,            // save subexpression locations
+      no_empty_expressions = 1 << 24,                   // no empty expressions allowed
+      optimize = 0,                                     // not really supported
+      
+
+
+      basic = basic_syntax_group | collate | no_escape_in_lists,
+      extended = no_bk_refs | collate | no_perl_ex | no_escape_in_lists,
+      normal = 0,
+      emacs = basic_syntax_group | collate | emacs_ex | bk_vbar,
+      awk = no_bk_refs | collate | no_perl_ex,
+      grep = basic | newline_alt,
+      egrep = extended | newline_alt,
+      sed = basic,
+      perl = normal,
+      ECMAScript = normal,
+      JavaScript = normal,
+      JScript = normal
+   };
+   typedef unsigned int flag_type;
+
+   enum restart_info
+   {
+      restart_any = 0,
+      restart_word = 1,
+      restart_line = 2,
+      restart_buf = 3,
+      restart_continue = 4,
+      restart_lit = 5,
+      restart_fixed_lit = 6, 
+      restart_count = 7
+   };
+};
+
+//
+// provide std lib proposal compatible constants:
+//
+namespace regex_constants{
+
+   enum flag_type_
+   {
+
+      no_except = ::boost::regbase::no_except,
+      failbit = ::boost::regbase::failbit,
+      literal = ::boost::regbase::literal,
+      icase = ::boost::regbase::icase,
+      nocollate = ::boost::regbase::nocollate,
+      collate = ::boost::regbase::collate,
+      nosubs = ::boost::regbase::nosubs,
+      optimize = ::boost::regbase::optimize,
+      bk_plus_qm = ::boost::regbase::bk_plus_qm,
+      bk_vbar = ::boost::regbase::bk_vbar,
+      no_intervals = ::boost::regbase::no_intervals,
+      no_char_classes = ::boost::regbase::no_char_classes,
+      no_escape_in_lists = ::boost::regbase::no_escape_in_lists,
+      no_mod_m = ::boost::regbase::no_mod_m,
+      mod_x = ::boost::regbase::mod_x,
+      mod_s = ::boost::regbase::mod_s,
+      no_mod_s = ::boost::regbase::no_mod_s,
+      save_subexpression_location = ::boost::regbase::save_subexpression_location,
+      no_empty_expressions = ::boost::regbase::no_empty_expressions,
+
+      basic = ::boost::regbase::basic,
+      extended = ::boost::regbase::extended,
+      normal = ::boost::regbase::normal,
+      emacs = ::boost::regbase::emacs,
+      awk = ::boost::regbase::awk,
+      grep = ::boost::regbase::grep,
+      egrep = ::boost::regbase::egrep,
+      sed = basic,
+      perl = normal,
+      ECMAScript = normal,
+      JavaScript = normal,
+      JScript = normal
+   };
+   typedef ::boost::regbase::flag_type syntax_option_type;
+
+} // namespace regex_constants
+
+} // namespace boost
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v5/regex.hpp

@@ -0,0 +1,106 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares boost::basic_regex<> and associated
+  *                functions and classes. This header is the main
+  *                entry point for the template regex code.
+  */
+
+#ifndef BOOST_RE_REGEX_HPP_INCLUDED
+#define BOOST_RE_REGEX_HPP_INCLUDED
+
+#ifdef __cplusplus
+
+// what follows is all C++ don't include in C builds!!
+
+#include <boost/regex/config.hpp>
+#include <boost/regex/v5/regex_workaround.hpp>
+#include <boost/regex_fwd.hpp>
+#include <boost/regex/regex_traits.hpp>
+#include <boost/regex/v5/error_type.hpp>
+#include <boost/regex/v5/match_flags.hpp>
+#include <boost/regex/v5/regex_raw_buffer.hpp>
+#include <boost/regex/pattern_except.hpp>
+#include <boost/regex/v5/char_regex_traits.hpp>
+#include <boost/regex/v5/states.hpp>
+#include <boost/regex/v5/regbase.hpp>
+#include <boost/regex/v5/basic_regex.hpp>
+#include <boost/regex/v5/basic_regex_creator.hpp>
+#include <boost/regex/v5/basic_regex_parser.hpp>
+#include <boost/regex/v5/sub_match.hpp>
+#include <boost/regex/v5/regex_format.hpp>
+#include <boost/regex/v5/match_results.hpp>
+#include <boost/regex/v5/perl_matcher.hpp>
+
+namespace boost{
+#ifdef BOOST_REGEX_NO_FWD
+typedef basic_regex<char, regex_traits<char> > regex;
+#ifndef BOOST_NO_WREGEX
+typedef basic_regex<wchar_t, regex_traits<wchar_t> > wregex;
+#endif
+#endif
+
+typedef match_results<const char*> cmatch;
+typedef match_results<std::string::const_iterator> smatch;
+#ifndef BOOST_NO_WREGEX
+typedef match_results<const wchar_t*> wcmatch;
+typedef match_results<std::wstring::const_iterator> wsmatch;
+#endif
+
+} // namespace boost
+
+#include <boost/regex/v5/regex_match.hpp>
+#include <boost/regex/v5/regex_search.hpp>
+#include <boost/regex/v5/regex_iterator.hpp>
+#include <boost/regex/v5/regex_token_iterator.hpp>
+#include <boost/regex/v5/regex_grep.hpp>
+#include <boost/regex/v5/regex_replace.hpp>
+#include <boost/regex/v5/regex_merge.hpp>
+#include <boost/regex/v5/regex_split.hpp>
+
+#endif  // __cplusplus
+
+#endif  // include
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_fwd.hpp

@@ -0,0 +1,73 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_fwd.cpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Forward declares boost::basic_regex<> and
+  *                associated typedefs.
+  */
+
+#ifndef BOOST_REGEX_FWD_HPP_INCLUDED
+#define BOOST_REGEX_FWD_HPP_INCLUDED
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+//
+// define BOOST_REGEX_NO_FWD if this
+// header doesn't work!
+//
+#ifdef BOOST_REGEX_NO_FWD
+#  ifndef BOOST_RE_REGEX_HPP
+#     include <boost/regex.hpp>
+#  endif
+#else
+
+namespace boost{
+
+template <class charT>
+class cpp_regex_traits;
+template <class charT>
+struct c_regex_traits;
+template <class charT>
+class w32_regex_traits;
+
+#ifdef BOOST_REGEX_USE_WIN32_LOCALE
+template <class charT, class implementationT = w32_regex_traits<charT> >
+struct regex_traits;
+#elif defined(BOOST_REGEX_USE_CPP_LOCALE)
+template <class charT, class implementationT = cpp_regex_traits<charT> >
+struct regex_traits;
+#else
+template <class charT, class implementationT = c_regex_traits<charT> >
+struct regex_traits;
+#endif
+
+template <class charT, class traits = regex_traits<charT> >
+class basic_regex;
+
+typedef basic_regex<char, regex_traits<char> > regex;
+#ifndef BOOST_NO_WREGEX
+typedef basic_regex<wchar_t, regex_traits<wchar_t> > wregex;
+#endif
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_NO_FWD
+
+#endif
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_grep.hpp

@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_grep.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_grep implementation.
+  */
+
+#ifndef BOOST_REGEX_V5_REGEX_GREP_HPP
+#define BOOST_REGEX_V5_REGEX_GREP_HPP
+
+
+namespace boost{
+
+//
+// regex_grep:
+// find all non-overlapping matches within the sequence first last:
+//
+template <class Predicate, class BidiIterator, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, 
+                               BidiIterator first, 
+                               BidiIterator last, 
+                               const basic_regex<charT, traits>& e, 
+                               match_flag_type flags = match_default)
+{
+   if(e.flags() & regex_constants::failbit)
+      return false;
+
+   typedef typename match_results<BidiIterator>::allocator_type match_allocator_type;
+
+   match_results<BidiIterator> m;
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, match_allocator_type, traits> matcher(first, last, m, e, flags, first);
+   unsigned int count = 0;
+   while(matcher.find())
+   {
+      ++count;
+      if(0 == foo(m))
+         return count; // caller doesn't want to go on
+      if(m[0].second == last)
+         return count; // we've reached the end, don't try and find an extra null match.
+      if(m.length() == 0)
+      {
+         if(m[0].second == last)
+            return count;
+         // we found a NULL-match, now try to find
+         // a non-NULL one at the same position:
+         match_results<BidiIterator, match_allocator_type> m2(m);
+         matcher.setf(match_not_null | match_continuous);
+         if(matcher.find())
+         {
+            ++count;
+            if(0 == foo(m))
+               return count;
+         }
+         else
+         {
+            // reset match back to where it was:
+            m = m2;
+         }
+         matcher.unsetf((match_not_null | match_continuous) & ~flags);
+      }
+   }
+   return count;
+}
+
+//
+// regex_grep convenience interfaces:
+//
+template <class Predicate, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, const charT* str, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_grep(foo, str, str + traits::length(str), e, flags);
+}
+
+template <class Predicate, class ST, class SA, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, const std::basic_string<charT, ST, SA>& s, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V5_REGEX_GREP_HPP
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_iterator.hpp

@@ -0,0 +1,173 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_iterator implementation.
+  */
+
+#ifndef BOOST_REGEX_V5_REGEX_ITERATOR_HPP
+#define BOOST_REGEX_V5_REGEX_ITERATOR_HPP
+
+#include <memory>
+
+namespace boost{
+
+template <class BidirectionalIterator, 
+          class charT,
+          class traits>
+class regex_iterator_implementation 
+{
+   typedef basic_regex<charT, traits> regex_type;
+
+   match_results<BidirectionalIterator> what;  // current match
+   BidirectionalIterator                base;  // start of sequence
+   BidirectionalIterator                end;   // end of sequence
+   const regex_type                     re;   // the expression
+   match_flag_type                      flags; // flags for matching
+
+public:
+   regex_iterator_implementation(const regex_type* p, BidirectionalIterator last, match_flag_type f)
+      : base(), end(last), re(*p), flags(f){}
+   regex_iterator_implementation(const regex_iterator_implementation& other)
+      :what(other.what), base(other.base), end(other.end), re(other.re), flags(other.flags){}
+   bool init(BidirectionalIterator first)
+   {
+      base = first;
+      return regex_search(first, end, what, re, flags);
+   }
+   bool compare(const regex_iterator_implementation& that)
+   {
+      if(this == &that) return true;
+      return (&re.get_data() == &that.re.get_data()) && (end == that.end) && (flags == that.flags) && (what[0].first == that.what[0].first) && (what[0].second == that.what[0].second);
+   }
+   const match_results<BidirectionalIterator>& get()
+   { return what; }
+   bool next()
+   {
+      //if(what.prefix().first != what[0].second)
+      //   flags |= match_prev_avail;
+      BidirectionalIterator next_start = what[0].second;
+      match_flag_type f(flags);
+      if(!what.length() || (f & regex_constants::match_posix))
+         f |= regex_constants::match_not_initial_null;
+      //if(base != next_start)
+      //   f |= regex_constants::match_not_bob;
+      bool result = regex_search(next_start, end, what, re, f, base);
+      if(result)
+         what.set_base(base);
+      return result;
+   }
+private:
+   regex_iterator_implementation& operator=(const regex_iterator_implementation&);
+};
+
+template <class BidirectionalIterator, 
+          class charT = typename std::iterator_traits<BidirectionalIterator>::value_type,
+          class traits = regex_traits<charT> >
+class regex_iterator 
+{
+private:
+   typedef regex_iterator_implementation<BidirectionalIterator, charT, traits> impl;
+   typedef std::shared_ptr<impl> pimpl;
+public:
+   typedef          basic_regex<charT, traits>                   regex_type;
+   typedef          match_results<BidirectionalIterator>                    value_type;
+   typedef typename std::iterator_traits<BidirectionalIterator>::difference_type 
+                                                                            difference_type;
+   typedef          const value_type*                                       pointer;
+   typedef          const value_type&                                       reference; 
+   typedef          std::forward_iterator_tag                               iterator_category;
+   
+   regex_iterator(){}
+   regex_iterator(BidirectionalIterator a, BidirectionalIterator b, 
+                  const regex_type& re, 
+                  match_flag_type m = match_default)
+                  : pdata(new impl(&re, b, m))
+   {
+      if(!pdata->init(a))
+      {
+         pdata.reset();
+      }
+   }
+   regex_iterator(const regex_iterator& that)
+      : pdata(that.pdata) {}
+   regex_iterator& operator=(const regex_iterator& that)
+   {
+      pdata = that.pdata;
+      return *this;
+   }
+   bool operator==(const regex_iterator& that)const
+   { 
+      if((pdata.get() == 0) || (that.pdata.get() == 0))
+         return pdata.get() == that.pdata.get();
+      return pdata->compare(*(that.pdata.get())); 
+   }
+   bool operator!=(const regex_iterator& that)const
+   { return !(*this == that); }
+   const value_type& operator*()const
+   { return pdata->get(); }
+   const value_type* operator->()const
+   { return &(pdata->get()); }
+   regex_iterator& operator++()
+   {
+      cow();
+      if(0 == pdata->next())
+      {
+         pdata.reset();
+      }
+      return *this;
+   }
+   regex_iterator operator++(int)
+   {
+      regex_iterator result(*this);
+      ++(*this);
+      return result;
+   }
+private:
+
+   pimpl pdata;
+
+   void cow()
+   {
+      // copy-on-write
+      if(pdata.get() && (pdata.use_count() > 1))
+      {
+         pdata.reset(new impl(*(pdata.get())));
+      }
+   }
+};
+
+typedef regex_iterator<const char*> cregex_iterator;
+typedef regex_iterator<std::string::const_iterator> sregex_iterator;
+#ifndef BOOST_NO_WREGEX
+typedef regex_iterator<const wchar_t*> wcregex_iterator;
+typedef regex_iterator<std::wstring::const_iterator> wsregex_iterator;
+#endif
+
+// make_regex_iterator:
+template <class charT, class traits>
+inline regex_iterator<const charT*, charT, traits> make_regex_iterator(const charT* p, const basic_regex<charT, traits>& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, m);
+}
+template <class charT, class traits, class ST, class SA>
+inline regex_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, m);
+}
+
+} // namespace boost
+
+#endif // BOOST_REGEX_V5_REGEX_ITERATOR_HPP
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_match.hpp

@@ -0,0 +1,92 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_match.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Regular expression matching algorithms.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+
+#ifndef BOOST_REGEX_MATCH_HPP
+#define BOOST_REGEX_MATCH_HPP
+
+namespace boost{
+
+//
+// proc regex_match
+// returns true if the specified regular expression matches
+// the whole of the input.  Fills in what matched in m.
+//
+template <class BidiIterator, class Allocator, class charT, class traits>
+bool regex_match(BidiIterator first, BidiIterator last, 
+                 match_results<BidiIterator, Allocator>& m, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, Allocator, traits> matcher(first, last, m, e, flags, first);
+   return matcher.match();
+}
+template <class iterator, class charT, class traits>
+bool regex_match(iterator first, iterator last, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   match_results<iterator> m;
+   return regex_match(first, last, m, e, flags | regex_constants::match_any);
+}
+//
+// query_match convenience interfaces:
+//
+template <class charT, class Allocator, class traits>
+inline bool regex_match(const charT* str, 
+                        match_results<const charT*, Allocator>& m, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_match(str, str + traits::length(str), m, e, flags);
+}
+
+template <class ST, class SA, class Allocator, class charT, class traits>
+inline bool regex_match(const std::basic_string<charT, ST, SA>& s, 
+                 match_results<typename std::basic_string<charT, ST, SA>::const_iterator, Allocator>& m, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_match(s.begin(), s.end(), m, e, flags);
+}
+template <class charT, class traits>
+inline bool regex_match(const charT* str, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   match_results<const charT*> m;
+   return regex_match(str, str + traits::length(str), m, e, flags | regex_constants::match_any);
+}
+
+template <class ST, class SA, class charT, class traits>
+inline bool regex_match(const std::basic_string<charT, ST, SA>& s, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   typedef typename std::basic_string<charT, ST, SA>::const_iterator iterator;
+   match_results<iterator> m;
+   return regex_match(s.begin(), s.end(), m, e, flags | regex_constants::match_any);
+}
+
+
+} // namespace boost
+
+#endif   // BOOST_REGEX_MATCH_HPP
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_merge.hpp

@@ -0,0 +1,71 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_format.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides formatting output routines for search and replace
+  *                operations.  Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_V5_REGEX_MERGE_HPP
+#define BOOST_REGEX_V5_REGEX_MERGE_HPP
+
+
+namespace boost{
+
+template <class OutputIterator, class Iterator, class traits, class charT>
+inline OutputIterator regex_merge(OutputIterator out,
+                         Iterator first,
+                         Iterator last,
+                         const basic_regex<charT, traits>& e, 
+                         const charT* fmt, 
+                         match_flag_type flags = match_default)
+{
+   return regex_replace(out, first, last, e, fmt, flags);
+}
+
+template <class OutputIterator, class Iterator, class traits, class charT>
+inline OutputIterator regex_merge(OutputIterator out,
+                         Iterator first,
+                         Iterator last,
+                         const basic_regex<charT, traits>& e, 
+                         const std::basic_string<charT>& fmt,
+                         match_flag_type flags = match_default)
+{
+   return regex_merge(out, first, last, e, fmt.c_str(), flags);
+}
+
+template <class traits, class charT>
+inline std::basic_string<charT> regex_merge(const std::basic_string<charT>& s,
+                         const basic_regex<charT, traits>& e, 
+                         const charT* fmt,
+                         match_flag_type flags = match_default)
+{
+   return regex_replace(s, e, fmt, flags);
+}
+
+template <class traits, class charT>
+inline std::basic_string<charT> regex_merge(const std::basic_string<charT>& s,
+                         const basic_regex<charT, traits>& e, 
+                         const std::basic_string<charT>& fmt,
+                         match_flag_type flags = match_default)
+{
+   return regex_replace(s, e, fmt, flags);
+}
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V5_REGEX_MERGE_HPP
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_raw_buffer.hpp

@@ -0,0 +1,213 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_raw_buffer.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Raw character buffer for regex code.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_RAW_BUFFER_HPP
+#define BOOST_REGEX_RAW_BUFFER_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#include <algorithm>
+#include <cstddef>
+
+namespace boost{
+   namespace BOOST_REGEX_DETAIL_NS{
+
+struct empty_padding{};
+
+union padding
+{
+   void* p;
+   unsigned int i;
+};
+
+template <int N>
+struct padding3
+{
+   enum{
+      padding_size = 8,
+      padding_mask = 7
+   };
+};
+
+template<>
+struct padding3<2>
+{
+   enum{
+      padding_size = 2,
+      padding_mask = 1
+   };
+};
+
+template<>
+struct padding3<4>
+{
+   enum{
+      padding_size = 4,
+      padding_mask = 3
+   };
+};
+
+template<>
+struct padding3<8>
+{
+   enum{
+      padding_size = 8,
+      padding_mask = 7
+   };
+};
+
+template<>
+struct padding3<16>
+{
+   enum{
+      padding_size = 16,
+      padding_mask = 15
+   };
+};
+
+enum{
+   padding_size = padding3<sizeof(padding)>::padding_size,
+   padding_mask = padding3<sizeof(padding)>::padding_mask
+};
+
+//
+// class raw_storage
+// basically this is a simplified vector<unsigned char>
+// this is used by basic_regex for expression storage
+//
+
+class raw_storage
+{
+public:
+   typedef std::size_t           size_type;
+   typedef unsigned char*        pointer;
+private:
+   pointer last, start, end;
+public:
+
+   raw_storage();
+   raw_storage(size_type n);
+
+   ~raw_storage()
+   {
+      ::operator delete(start);
+   }
+
+   void  resize(size_type n)
+   {
+      size_type newsize = start ? last - start : 1024;
+      while (newsize < n)
+         newsize *= 2;
+      size_type datasize = end - start;
+      // extend newsize to WORD/DWORD boundary:
+      newsize = (newsize + padding_mask) & ~(padding_mask);
+
+      // allocate and copy data:
+      pointer ptr = static_cast<pointer>(::operator new(newsize));
+      BOOST_REGEX_NOEH_ASSERT(ptr)
+         if (start)
+            std::memcpy(ptr, start, datasize);
+
+      // get rid of old buffer:
+      ::operator delete(start);
+
+      // and set up pointers:
+      start = ptr;
+      end = ptr + datasize;
+      last = ptr + newsize;
+   }
+
+   void*  extend(size_type n)
+   {
+      if(size_type(last - end) < n)
+         resize(n + (end - start));
+      pointer result = end;
+      end += n;
+      return result;
+   }
+
+   void*  insert(size_type pos, size_type n)
+   {
+      BOOST_REGEX_ASSERT(pos <= size_type(end - start));
+      if (size_type(last - end) < n)
+         resize(n + (end - start));
+      void* result = start + pos;
+      std::memmove(start + pos + n, start + pos, (end - start) - pos);
+      end += n;
+      return result;
+   }
+
+   size_type  size()
+   {
+      return size_type(end - start);
+   }
+
+   size_type  capacity()
+   {
+      return size_type(last - start);
+   }
+
+   void*  data()const
+   {
+      return start;
+   }
+
+   size_type  index(void* ptr)
+   {
+      return size_type(static_cast<pointer>(ptr) - static_cast<pointer>(data()));
+   }
+
+   void  clear()
+   {
+      end = start;
+   }
+
+   void  align()
+   {
+      // move end up to a boundary:
+      end = start + (((end - start) + padding_mask) & ~padding_mask);
+   }
+   void swap(raw_storage& that)
+   {
+      std::swap(start, that.start);
+      std::swap(end, that.end);
+      std::swap(last, that.last);
+  }
+};
+
+inline raw_storage::raw_storage()
+{
+   last = start = end = 0;
+}
+
+inline raw_storage::raw_storage(size_type n)
+{
+   start = end = static_cast<pointer>(::operator new(n));
+   BOOST_REGEX_NOEH_ASSERT(start)
+   last = start + n;
+}
+
+} // namespace BOOST_REGEX_DETAIL_NS
+} // namespace boost
+
+#endif
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_replace.hpp

@@ -0,0 +1,77 @@
+/*
+ *
+ * Copyright (c) 1998-2009
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_format.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides formatting output routines for search and replace
+  *                operations.  Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_V5_REGEX_REPLACE_HPP
+#define BOOST_REGEX_V5_REGEX_REPLACE_HPP
+
+
+namespace boost{
+
+template <class OutputIterator, class BidirectionalIterator, class traits, class charT, class Formatter>
+OutputIterator regex_replace(OutputIterator out,
+                         BidirectionalIterator first,
+                         BidirectionalIterator last,
+                         const basic_regex<charT, traits>& e, 
+                         Formatter fmt, 
+                         match_flag_type flags = match_default)
+{
+   regex_iterator<BidirectionalIterator, charT, traits> i(first, last, e, flags);
+   regex_iterator<BidirectionalIterator, charT, traits> j;
+   if(i == j)
+   {
+      if(!(flags & regex_constants::format_no_copy))
+         out = BOOST_REGEX_DETAIL_NS::copy(first, last, out);
+   }
+   else
+   {
+      BidirectionalIterator last_m(first);
+      while(i != j)
+      {
+         if(!(flags & regex_constants::format_no_copy))
+            out = BOOST_REGEX_DETAIL_NS::copy(i->prefix().first, i->prefix().second, out);
+         out = i->format(out, fmt, flags, e);
+         last_m = (*i)[0].second;
+         if(flags & regex_constants::format_first_only)
+            break;
+         ++i;
+      }
+      if(!(flags & regex_constants::format_no_copy))
+         out = BOOST_REGEX_DETAIL_NS::copy(last_m, last, out);
+   }
+   return out;
+}
+
+template <class traits, class charT, class Formatter>
+std::basic_string<charT> regex_replace(const std::basic_string<charT>& s,
+                         const basic_regex<charT, traits>& e, 
+                         Formatter fmt,
+                         match_flag_type flags = match_default)
+{
+   std::basic_string<charT> result;
+   BOOST_REGEX_DETAIL_NS::string_out_iterator<std::basic_string<charT> > i(result);
+   regex_replace(i, s.begin(), s.end(), e, fmt, flags);
+   return result;
+}
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V5_REGEX_REPLACE_HPP
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_search.hpp

@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_search.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_search implementation.
+  */
+
+#ifndef BOOST_REGEX_V5_REGEX_SEARCH_HPP
+#define BOOST_REGEX_V5_REGEX_SEARCH_HPP
+
+
+namespace boost{
+
+template <class BidiIterator, class Allocator, class charT, class traits>
+bool regex_search(BidiIterator first, BidiIterator last, 
+                  match_results<BidiIterator, Allocator>& m, 
+                  const basic_regex<charT, traits>& e, 
+                  match_flag_type flags = match_default)
+{
+   return regex_search(first, last, m, e, flags, first);
+}
+
+template <class BidiIterator, class Allocator, class charT, class traits>
+bool regex_search(BidiIterator first, BidiIterator last, 
+                  match_results<BidiIterator, Allocator>& m, 
+                  const basic_regex<charT, traits>& e, 
+                  match_flag_type flags,
+                  BidiIterator base)
+{
+   if(e.flags() & regex_constants::failbit)
+      return false;
+
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, Allocator, traits> matcher(first, last, m, e, flags, base);
+   return matcher.find();
+}
+
+//
+// regex_search convenience interfaces:
+//
+template <class charT, class Allocator, class traits>
+inline bool regex_search(const charT* str, 
+                        match_results<const charT*, Allocator>& m, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(str, str + traits::length(str), m, e, flags);
+}
+
+template <class ST, class SA, class Allocator, class charT, class traits>
+inline bool regex_search(const std::basic_string<charT, ST, SA>& s, 
+                 match_results<typename std::basic_string<charT, ST, SA>::const_iterator, Allocator>& m, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_search(s.begin(), s.end(), m, e, flags);
+}
+
+template <class BidiIterator, class charT, class traits>
+bool regex_search(BidiIterator first, BidiIterator last, 
+                  const basic_regex<charT, traits>& e, 
+                  match_flag_type flags = match_default)
+{
+   if(e.flags() & regex_constants::failbit)
+      return false;
+
+   match_results<BidiIterator> m;
+   typedef typename match_results<BidiIterator>::allocator_type match_alloc_type;
+   BOOST_REGEX_DETAIL_NS::perl_matcher<BidiIterator, match_alloc_type, traits> matcher(first, last, m, e, flags | regex_constants::match_any, first);
+   return matcher.find();
+}
+
+template <class charT, class traits>
+inline bool regex_search(const charT* str, 
+                        const basic_regex<charT, traits>& e, 
+                        match_flag_type flags = match_default)
+{
+   return regex_search(str, str + traits::length(str), e, flags);
+}
+
+template <class ST, class SA, class charT, class traits>
+inline bool regex_search(const std::basic_string<charT, ST, SA>& s, 
+                 const basic_regex<charT, traits>& e, 
+                 match_flag_type flags = match_default)
+{
+   return regex_search(s.begin(), s.end(), e, flags);
+}
+
+} // namespace boost
+
+#endif  // BOOST_REGEX_V5_REGEX_SEARCH_HPP
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_split.hpp

@@ -0,0 +1,152 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_split.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Implements regex_split and associated functions.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_SPLIT_HPP
+#define BOOST_REGEX_SPLIT_HPP
+
+namespace boost{
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#if BOOST_REGEX_MSVC < 1910
+#pragma warning(disable:4800)
+#endif
+#endif
+
+namespace BOOST_REGEX_DETAIL_NS{
+
+template <class charT>
+const basic_regex<charT>& get_default_expression(charT)
+{
+   static const charT expression_text[4] = { '\\', 's', '+', '\00', };
+   static const basic_regex<charT> e(expression_text);
+   return e;
+}
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1>
+class split_pred
+{
+   typedef std::basic_string<charT, Traits1, Alloc1> string_type;
+   typedef typename string_type::const_iterator iterator_type;
+   iterator_type* p_last;
+   OutputIterator* p_out;
+   std::size_t* p_max;
+   std::size_t initial_max;
+public:
+   split_pred(iterator_type* a, OutputIterator* b, std::size_t* c)
+      : p_last(a), p_out(b), p_max(c), initial_max(*c) {}
+
+   bool operator()(const match_results<iterator_type>& what);
+};
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1>
+bool split_pred<OutputIterator, charT, Traits1, Alloc1>::operator()
+   (const match_results<iterator_type>& what)
+{
+   *p_last = what[0].second;
+   if(what.size() > 1)
+   {
+      // output sub-expressions only:
+      for(unsigned i = 1; i < what.size(); ++i)
+      {
+         *(*p_out) = what.str(i);
+         ++(*p_out);
+         if(0 == --*p_max) return false;
+      }
+      return *p_max != 0;
+   }
+   else
+   {
+      // output $` only if it's not-null or not at the start of the input:
+      const sub_match<iterator_type>& sub = what[-1];
+      if((sub.first != sub.second) || (*p_max != initial_max))
+      {
+         *(*p_out) = sub.str();
+         ++(*p_out);
+         return --*p_max;
+      }
+   }
+   //
+   // initial null, do nothing:
+   return true;
+}
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1, class Traits2>
+std::size_t regex_split(OutputIterator out,
+                   std::basic_string<charT, Traits1, Alloc1>& s, 
+                   const basic_regex<charT, Traits2>& e,
+                   match_flag_type flags,
+                   std::size_t max_split)
+{
+   typedef typename std::basic_string<charT, Traits1, Alloc1>::const_iterator  ci_t;
+   //typedef typename match_results<ci_t>::allocator_type                        match_allocator;
+   ci_t last = s.begin();
+   std::size_t init_size = max_split;
+   BOOST_REGEX_DETAIL_NS::split_pred<OutputIterator, charT, Traits1, Alloc1> pred(&last, &out, &max_split);
+   ci_t i, j;
+   i = s.begin();
+   j = s.end();
+   regex_grep(pred, i, j, e, flags);
+   //
+   // if there is still input left, do a final push as long as max_split
+   // is not exhausted, and we're not splitting sub-expressions rather 
+   // than whitespace:
+   if(max_split && (last != s.end()) && (e.mark_count() == 0))
+   {
+      *out = std::basic_string<charT, Traits1, Alloc1>((ci_t)last, (ci_t)s.end());
+      ++out;
+      last = s.end();
+      --max_split;
+   }
+   //
+   // delete from the string everything that has been processed so far:
+   s.erase(0, last - s.begin());
+   //
+   // return the number of new records pushed:
+   return init_size - max_split;
+}
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1, class Traits2>
+inline std::size_t regex_split(OutputIterator out,
+                   std::basic_string<charT, Traits1, Alloc1>& s, 
+                   const basic_regex<charT, Traits2>& e,
+                   match_flag_type flags = match_default)
+{
+   return regex_split(out, s, e, flags, UINT_MAX);
+}
+
+template <class OutputIterator, class charT, class Traits1, class Alloc1>
+inline std::size_t regex_split(OutputIterator out,
+                   std::basic_string<charT, Traits1, Alloc1>& s)
+{
+   return regex_split(out, s, BOOST_REGEX_DETAIL_NS::get_default_expression(charT(0)), match_default, UINT_MAX);
+}
+
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+
+} // namespace boost
+
+#endif
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_token_iterator.hpp

@@ -0,0 +1,255 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_token_iterator.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Provides regex_token_iterator implementation.
+  */
+
+#ifndef BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP
+#define BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP
+
+#include <memory>
+
+namespace boost{
+
+template <class BidirectionalIterator,
+          class charT,
+          class traits>
+class regex_token_iterator_implementation 
+{
+   typedef basic_regex<charT, traits> regex_type;
+   typedef sub_match<BidirectionalIterator>      value_type;
+
+   match_results<BidirectionalIterator> what;   // current match
+   BidirectionalIterator                base;    // start of search area
+   BidirectionalIterator                end;    // end of search area
+   const regex_type                     re;    // the expression
+   match_flag_type                      flags;  // match flags
+   value_type                           result; // the current string result
+   int                                  N;      // the current sub-expression being enumerated
+   std::vector<int>                     subs;   // the sub-expressions to enumerate
+
+public:
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, int sub, match_flag_type f)
+      : end(last), re(*p), flags(f), N(0){ subs.push_back(sub); }
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const std::vector<int>& v, match_flag_type f)
+      : end(last), re(*p), flags(f), N(0), subs(v){}
+   template <std::size_t CN>
+   regex_token_iterator_implementation(const regex_type* p, BidirectionalIterator last, const int (&submatches)[CN], match_flag_type f)
+      : end(last), re(*p), flags(f), N(0)
+   {
+      for(std::size_t i = 0; i < CN; ++i)
+      {
+         subs.push_back(submatches[i]);
+      }
+   }
+   regex_token_iterator_implementation(const regex_token_iterator_implementation& other) = default;
+   bool init(BidirectionalIterator first)
+   {
+      N = 0;
+      base = first;
+      if(regex_search(first, end, what, re, flags, base) == true)
+      {
+         N = 0;
+         result = ((subs[N] == -1) ? what.prefix() : what[(int)subs[N]]);
+         return true;
+      }
+      else if((subs[N] == -1) && (first != end))
+      {
+         result.first = first;
+         result.second = end;
+         result.matched = (first != end);
+         N = -1;
+         return true;
+      }
+      return false;
+   }
+   bool compare(const regex_token_iterator_implementation& that)
+   {
+      if(this == &that) return true;
+      return (&re.get_data() == &that.re.get_data()) 
+         && (end == that.end) 
+         && (flags == that.flags) 
+         && (N == that.N) 
+         && (what[0].first == that.what[0].first) 
+         && (what[0].second == that.what[0].second);
+   }
+   const value_type& get()
+   { return result; }
+   bool next()
+   {
+      if(N == -1)
+         return false;
+      if(N+1 < (int)subs.size())
+      {
+         ++N;
+         result =((subs[N] == -1) ? what.prefix() : what[subs[N]]);
+         return true;
+      }
+      //if(what.prefix().first != what[0].second)
+      //   flags |= /*match_prev_avail |*/ regex_constants::match_not_bob;
+      BidirectionalIterator last_end(what[0].second);
+      if(regex_search(last_end, end, what, re, ((what[0].first == what[0].second) ? flags | regex_constants::match_not_initial_null : flags), base))
+      {
+         N =0;
+         result =((subs[N] == -1) ? what.prefix() : what[subs[N]]);
+         return true;
+      }
+      else if((last_end != end) && (subs[0] == -1))
+      {
+         N =-1;
+         result.first = last_end;
+         result.second = end;
+         result.matched = (last_end != end);
+         return true;
+      }
+      return false;
+   }
+private:
+   regex_token_iterator_implementation& operator=(const regex_token_iterator_implementation&);
+};
+
+template <class BidirectionalIterator, 
+          class charT = typename std::iterator_traits<BidirectionalIterator>::value_type,
+          class traits = regex_traits<charT> >
+class regex_token_iterator 
+{
+private:
+   typedef regex_token_iterator_implementation<BidirectionalIterator, charT, traits> impl;
+   typedef std::shared_ptr<impl> pimpl;
+public:
+   typedef          basic_regex<charT, traits>                   regex_type;
+   typedef          sub_match<BidirectionalIterator>                        value_type;
+   typedef typename std::iterator_traits<BidirectionalIterator>::difference_type 
+                                                                            difference_type;
+   typedef          const value_type*                                       pointer;
+   typedef          const value_type&                                       reference; 
+   typedef          std::forward_iterator_tag                               iterator_category;
+   
+   regex_token_iterator(){}
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, 
+                        int submatch = 0, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatch, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re, 
+                        const std::vector<int>& submatches, match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+   template <std::size_t N>
+   regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b, const regex_type& re,
+                        const int (&submatches)[N], match_flag_type m = match_default)
+                        : pdata(new impl(&re, b, submatches, m))
+   {
+      if(!pdata->init(a))
+         pdata.reset();
+   }
+   regex_token_iterator(const regex_token_iterator& that)
+      : pdata(that.pdata) {}
+   regex_token_iterator& operator=(const regex_token_iterator& that)
+   {
+      pdata = that.pdata;
+      return *this;
+   }
+   bool operator==(const regex_token_iterator& that)const
+   { 
+      if((pdata.get() == 0) || (that.pdata.get() == 0))
+         return pdata.get() == that.pdata.get();
+      return pdata->compare(*(that.pdata.get())); 
+   }
+   bool operator!=(const regex_token_iterator& that)const
+   { return !(*this == that); }
+   const value_type& operator*()const
+   { return pdata->get(); }
+   const value_type* operator->()const
+   { return &(pdata->get()); }
+   regex_token_iterator& operator++()
+   {
+      cow();
+      if(0 == pdata->next())
+      {
+         pdata.reset();
+      }
+      return *this;
+   }
+   regex_token_iterator operator++(int)
+   {
+      regex_token_iterator result(*this);
+      ++(*this);
+      return result;
+   }
+private:
+
+   pimpl pdata;
+
+   void cow()
+   {
+      // copy-on-write
+      if(pdata.get() && (pdata.use_count() > 1))
+      {
+         pdata.reset(new impl(*(pdata.get())));
+      }
+   }
+};
+
+typedef regex_token_iterator<const char*> cregex_token_iterator;
+typedef regex_token_iterator<std::string::const_iterator> sregex_token_iterator;
+#ifndef BOOST_NO_WREGEX
+typedef regex_token_iterator<const wchar_t*> wcregex_token_iterator;
+typedef regex_token_iterator<std::wstring::const_iterator> wsregex_token_iterator;
+#endif
+
+template <class charT, class traits>
+inline regex_token_iterator<const charT*, charT, traits> make_regex_token_iterator(const charT* p, const basic_regex<charT, traits>& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, submatch, m);
+}
+template <class charT, class traits, class ST, class SA>
+inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_token_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, int submatch = 0, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, submatch, m);
+}
+template <class charT, class traits, std::size_t N>
+inline regex_token_iterator<const charT*, charT, traits> make_regex_token_iterator(const charT* p, const basic_regex<charT, traits>& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, submatch, m);
+}
+template <class charT, class traits, class ST, class SA, std::size_t N>
+inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_token_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, const int (&submatch)[N], regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, submatch, m);
+}
+template <class charT, class traits>
+inline regex_token_iterator<const charT*, charT, traits> make_regex_token_iterator(const charT* p, const basic_regex<charT, traits>& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<const charT*, charT, traits>(p, p+traits::length(p), e, submatch, m);
+}
+template <class charT, class traits, class ST, class SA>
+inline regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits> make_regex_token_iterator(const std::basic_string<charT, ST, SA>& p, const basic_regex<charT, traits>& e, const std::vector<int>& submatch, regex_constants::match_flag_type m = regex_constants::match_default)
+{
+   return regex_token_iterator<typename std::basic_string<charT, ST, SA>::const_iterator, charT, traits>(p.begin(), p.end(), e, submatch, m);
+}
+
+} // namespace boost
+
+#endif // BOOST_REGEX_V5_REGEX_TOKEN_ITERATOR_HPP
+
+
+
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_traits.hpp

@@ -0,0 +1,130 @@
+/*
+ *
+ * Copyright (c) 2003
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the 
+ * Boost Software License, Version 1.0. (See accompanying file 
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+ 
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_traits.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares regular expression traits classes.
+  */
+
+#ifndef BOOST_REGEX_TRAITS_HPP_INCLUDED
+#define BOOST_REGEX_TRAITS_HPP_INCLUDED
+
+#include <boost/regex/config.hpp>
+#include <boost/regex/v5/regex_workaround.hpp>
+#include <boost/regex/v5/syntax_type.hpp>
+#include <boost/regex/v5/error_type.hpp>
+#include <boost/regex/v5/regex_traits_defaults.hpp>
+#include <boost/regex/v5/cpp_regex_traits.hpp>
+#include <boost/regex/v5/c_regex_traits.hpp>
+#if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32)
+#     include <boost/regex/v5/w32_regex_traits.hpp>
+#endif
+#include <boost/regex_fwd.hpp>
+
+namespace boost{
+
+template <class charT, class implementationT >
+struct regex_traits : public implementationT
+{
+   regex_traits() : implementationT() {}
+};
+
+//
+// class regex_traits_wrapper.
+// this is what our implementation will actually store;
+// it provides default implementations of the "optional"
+// interfaces that we support, in addition to the
+// required "standard" ones:
+//
+namespace BOOST_REGEX_DETAIL_NS{
+
+   template <class T>
+   struct has_boost_extensions_tag
+   {
+      template <class U>
+      static double checker(U*, typename U::boost_extensions_tag* = nullptr);
+      static char   checker(...);
+      static T* get();
+
+      static const bool value = sizeof(checker(get())) > 1;
+   };
+   
+
+template <class BaseT>
+struct default_wrapper : public BaseT
+{
+   typedef typename BaseT::char_type char_type;
+   std::string error_string(::boost::regex_constants::error_type e)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::get_default_error_string(e);
+   }
+   ::boost::regex_constants::syntax_type syntax_type(char_type c)const
+   {
+      return (char_type(c & 0x7f) == c) ? get_default_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::syntax_char;
+   }
+   ::boost::regex_constants::escape_syntax_type escape_syntax_type(char_type c)const
+   {
+      return (char_type(c & 0x7f) == c) ? get_default_escape_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::escape_type_identity;
+   }
+   std::intmax_t toi(const char_type*& p1, const char_type* p2, int radix)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::global_toi(p1, p2, radix, *this);
+   }
+   char_type translate(char_type c, bool icase)const
+   {
+      return (icase ? this->translate_nocase(c) : this->translate(c));
+   }
+   char_type translate(char_type c)const
+   {
+      return BaseT::translate(c);
+   }
+   char_type tolower(char_type c)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::global_lower(c);
+   }
+   char_type toupper(char_type c)const
+   {
+      return ::boost::BOOST_REGEX_DETAIL_NS::global_upper(c);
+   }
+};
+
+template <class BaseT, bool has_extensions>
+struct compute_wrapper_base
+{
+   typedef BaseT type;
+};
+template <class BaseT>
+struct compute_wrapper_base<BaseT, false>
+{
+   typedef default_wrapper<BaseT> type;
+};
+
+} // namespace BOOST_REGEX_DETAIL_NS
+
+template <class BaseT>
+struct regex_traits_wrapper 
+   : public ::boost::BOOST_REGEX_DETAIL_NS::compute_wrapper_base<
+               BaseT, 
+               ::boost::BOOST_REGEX_DETAIL_NS::has_boost_extensions_tag<BaseT>::value
+            >::type
+{
+   regex_traits_wrapper(){}
+private:
+   regex_traits_wrapper(const regex_traits_wrapper&);
+   regex_traits_wrapper& operator=(const regex_traits_wrapper&);
+};
+
+} // namespace boost
+
+#endif // include
+

lib/third_party/boost/regex/include/boost/regex/v5/regex_traits_defaults.hpp

@@ -0,0 +1,996 @@
+/*
+ *
+ * Copyright (c) 2004
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0. (See accompanying file
+ * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_traits_defaults.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Declares API's for access to regex_traits default properties.
+  */
+
+#ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
+#define BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED
+
+#include <boost/regex/config.hpp>
+
+#include <boost/regex/v5/syntax_type.hpp>
+#include <boost/regex/v5/error_type.hpp>
+#include <boost/regex/v5/regex_workaround.hpp>
+#include <type_traits>
+#include <cstdint>
+#include <cctype>
+#include <locale>
+#include <cwctype>
+#include <limits>
+
+namespace boost{ namespace BOOST_REGEX_DETAIL_NS{
+
+
+//
+// helpers to suppress warnings:
+//
+template <class charT>
+inline bool is_extended(charT c)
+{
+   typedef typename std::make_unsigned<charT>::type unsigned_type; 
+   return (sizeof(charT) > 1) && (static_cast<unsigned_type>(c) >= 256u); 
+}
+inline bool is_extended(char)
+{ return false; }
+
+inline const char*  get_default_syntax(regex_constants::syntax_type n)
+{
+   // if the user hasn't supplied a message catalog, then this supplies
+   // default "messages" for us to load in the range 1-100.
+   const char* messages[] = {
+         "",
+         "(",
+         ")",
+         "$",
+         "^",
+         ".",
+         "*",
+         "+",
+         "?",
+         "[",
+         "]",
+         "|",
+         "\\",
+         "#",
+         "-",
+         "{",
+         "}",
+         "0123456789",
+         "b",
+         "B",
+         "<",
+         ">",
+         "",
+         "",
+         "A`",
+         "z'",
+         "\n",
+         ",",
+         "a",
+         "f",
+         "n",
+         "r",
+         "t",
+         "v",
+         "x",
+         "c",
+         ":",
+         "=",
+         "e",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "",
+         "E",
+         "Q",
+         "X",
+         "C",
+         "Z",
+         "G",
+         "!",
+         "p",
+         "P",
+         "N",
+         "gk",
+         "K",
+         "R",
+   };
+
+   return ((n >= (sizeof(messages) / sizeof(messages[1]))) ? "" : messages[n]);
+}
+
+inline const char*  get_default_error_string(regex_constants::error_type n)
+{
+   static const char* const s_default_error_messages[] = {
+      "Success",                                                            /* REG_NOERROR 0 error_ok */
+      "No match",                                                           /* REG_NOMATCH 1 error_no_match */
+      "Invalid regular expression.",                                        /* REG_BADPAT 2 error_bad_pattern */
+      "Invalid collation character.",                                       /* REG_ECOLLATE 3 error_collate */
+      "Invalid character class name, collating name, or character range.",  /* REG_ECTYPE 4 error_ctype */
+      "Invalid or unterminated escape sequence.",                           /* REG_EESCAPE 5 error_escape */
+      "Invalid back reference: specified capturing group does not exist.",  /* REG_ESUBREG 6 error_backref */
+      "Unmatched [ or [^ in character class declaration.",                  /* REG_EBRACK 7 error_brack */
+      "Unmatched marking parenthesis ( or \\(.",                            /* REG_EPAREN 8 error_paren */
+      "Unmatched quantified repeat operator { or \\{.",                     /* REG_EBRACE 9 error_brace */
+      "Invalid content of repeat range.",                                   /* REG_BADBR 10 error_badbrace */
+      "Invalid range end in character class",                               /* REG_ERANGE 11 error_range */
+      "Out of memory.",                                                     /* REG_ESPACE 12 error_space NOT USED */
+      "Invalid preceding regular expression prior to repetition operator.", /* REG_BADRPT 13 error_badrepeat */
+      "Premature end of regular expression",                                /* REG_EEND 14 error_end NOT USED */
+      "Regular expression is too large.",                                   /* REG_ESIZE 15 error_size NOT USED */
+      "Unmatched ) or \\)",                                                 /* REG_ERPAREN 16 error_right_paren NOT USED */
+      "Empty regular expression.",                                          /* REG_EMPTY 17 error_empty */
+      "The complexity of matching the regular expression exceeded predefined bounds.  "
+      "Try refactoring the regular expression to make each choice made by the state machine unambiguous.  "
+      "This exception is thrown to prevent \"eternal\" matches that take an "
+      "indefinite period time to locate.",                                  /* REG_ECOMPLEXITY 18 error_complexity */
+      "Ran out of stack space trying to match the regular expression.",     /* REG_ESTACK 19 error_stack */
+      "Invalid or unterminated Perl (?...) sequence.",                      /* REG_E_PERL 20 error_perl */
+      "Unknown error.",                                                     /* REG_E_UNKNOWN 21 error_unknown */
+   };
+
+   return (n > ::boost::regex_constants::error_unknown) ? s_default_error_messages[::boost::regex_constants::error_unknown] : s_default_error_messages[n];
+}
+
+inline regex_constants::syntax_type  get_default_syntax_type(char c)
+{
+   //
+   // char_syntax determines how the compiler treats a given character
+   // in a regular expression.
+   //
+   static regex_constants::syntax_type char_syntax[] = {
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_newline,     /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /* */    // 32
+      regex_constants::syntax_not,        /*!*/
+      regex_constants::syntax_char,        /*"*/
+      regex_constants::syntax_hash,        /*#*/
+      regex_constants::syntax_dollar,        /*$*/
+      regex_constants::syntax_char,        /*%*/
+      regex_constants::syntax_char,        /*&*/
+      regex_constants::escape_type_end_buffer,  /*'*/
+      regex_constants::syntax_open_mark,        /*(*/
+      regex_constants::syntax_close_mark,        /*)*/
+      regex_constants::syntax_star,        /***/
+      regex_constants::syntax_plus,        /*+*/
+      regex_constants::syntax_comma,        /*,*/
+      regex_constants::syntax_dash,        /*-*/
+      regex_constants::syntax_dot,        /*.*/
+      regex_constants::syntax_char,        /*/*/
+      regex_constants::syntax_digit,        /*0*/
+      regex_constants::syntax_digit,        /*1*/
+      regex_constants::syntax_digit,        /*2*/
+      regex_constants::syntax_digit,        /*3*/
+      regex_constants::syntax_digit,        /*4*/
+      regex_constants::syntax_digit,        /*5*/
+      regex_constants::syntax_digit,        /*6*/
+      regex_constants::syntax_digit,        /*7*/
+      regex_constants::syntax_digit,        /*8*/
+      regex_constants::syntax_digit,        /*9*/
+      regex_constants::syntax_colon,        /*:*/
+      regex_constants::syntax_char,        /*;*/
+      regex_constants::escape_type_left_word, /*<*/
+      regex_constants::syntax_equal,        /*=*/
+      regex_constants::escape_type_right_word, /*>*/
+      regex_constants::syntax_question,        /*?*/
+      regex_constants::syntax_char,        /*@*/
+      regex_constants::syntax_char,        /*A*/
+      regex_constants::syntax_char,        /*B*/
+      regex_constants::syntax_char,        /*C*/
+      regex_constants::syntax_char,        /*D*/
+      regex_constants::syntax_char,        /*E*/
+      regex_constants::syntax_char,        /*F*/
+      regex_constants::syntax_char,        /*G*/
+      regex_constants::syntax_char,        /*H*/
+      regex_constants::syntax_char,        /*I*/
+      regex_constants::syntax_char,        /*J*/
+      regex_constants::syntax_char,        /*K*/
+      regex_constants::syntax_char,        /*L*/
+      regex_constants::syntax_char,        /*M*/
+      regex_constants::syntax_char,        /*N*/
+      regex_constants::syntax_char,        /*O*/
+      regex_constants::syntax_char,        /*P*/
+      regex_constants::syntax_char,        /*Q*/
+      regex_constants::syntax_char,        /*R*/
+      regex_constants::syntax_char,        /*S*/
+      regex_constants::syntax_char,        /*T*/
+      regex_constants::syntax_char,        /*U*/
+      regex_constants::syntax_char,        /*V*/
+      regex_constants::syntax_char,        /*W*/
+      regex_constants::syntax_char,        /*X*/
+      regex_constants::syntax_char,        /*Y*/
+      regex_constants::syntax_char,        /*Z*/
+      regex_constants::syntax_open_set,        /*[*/
+      regex_constants::syntax_escape,        /*\*/
+      regex_constants::syntax_close_set,        /*]*/
+      regex_constants::syntax_caret,        /*^*/
+      regex_constants::syntax_char,        /*_*/
+      regex_constants::syntax_char,        /*`*/
+      regex_constants::syntax_char,        /*a*/
+      regex_constants::syntax_char,        /*b*/
+      regex_constants::syntax_char,        /*c*/
+      regex_constants::syntax_char,        /*d*/
+      regex_constants::syntax_char,        /*e*/
+      regex_constants::syntax_char,        /*f*/
+      regex_constants::syntax_char,        /*g*/
+      regex_constants::syntax_char,        /*h*/
+      regex_constants::syntax_char,        /*i*/
+      regex_constants::syntax_char,        /*j*/
+      regex_constants::syntax_char,        /*k*/
+      regex_constants::syntax_char,        /*l*/
+      regex_constants::syntax_char,        /*m*/
+      regex_constants::syntax_char,        /*n*/
+      regex_constants::syntax_char,        /*o*/
+      regex_constants::syntax_char,        /*p*/
+      regex_constants::syntax_char,        /*q*/
+      regex_constants::syntax_char,        /*r*/
+      regex_constants::syntax_char,        /*s*/
+      regex_constants::syntax_char,        /*t*/
+      regex_constants::syntax_char,        /*u*/
+      regex_constants::syntax_char,        /*v*/
+      regex_constants::syntax_char,        /*w*/
+      regex_constants::syntax_char,        /*x*/
+      regex_constants::syntax_char,        /*y*/
+      regex_constants::syntax_char,        /*z*/
+      regex_constants::syntax_open_brace,        /*{*/
+      regex_constants::syntax_or,        /*|*/
+      regex_constants::syntax_close_brace,        /*}*/
+      regex_constants::syntax_char,        /*~*/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+      regex_constants::syntax_char,        /**/
+   };
+
+   return char_syntax[(unsigned char)c];
+}
+
+inline regex_constants::escape_syntax_type  get_default_escape_syntax_type(char c)
+{
+   //
+   // char_syntax determines how the compiler treats a given character
+   // in a regular expression.
+   //
+   static regex_constants::escape_syntax_type char_syntax[] = {
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,     /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /* */    // 32
+      regex_constants::escape_type_identity,        /*!*/
+      regex_constants::escape_type_identity,        /*"*/
+      regex_constants::escape_type_identity,        /*#*/
+      regex_constants::escape_type_identity,        /*$*/
+      regex_constants::escape_type_identity,        /*%*/
+      regex_constants::escape_type_identity,        /*&*/
+      regex_constants::escape_type_end_buffer,        /*'*/
+      regex_constants::syntax_open_mark,        /*(*/
+      regex_constants::syntax_close_mark,        /*)*/
+      regex_constants::escape_type_identity,        /***/
+      regex_constants::syntax_plus,                 /*+*/
+      regex_constants::escape_type_identity,        /*,*/
+      regex_constants::escape_type_identity,        /*-*/
+      regex_constants::escape_type_identity,        /*.*/
+      regex_constants::escape_type_identity,        /*/*/
+      regex_constants::escape_type_decimal,        /*0*/
+      regex_constants::escape_type_backref,        /*1*/
+      regex_constants::escape_type_backref,        /*2*/
+      regex_constants::escape_type_backref,        /*3*/
+      regex_constants::escape_type_backref,        /*4*/
+      regex_constants::escape_type_backref,        /*5*/
+      regex_constants::escape_type_backref,        /*6*/
+      regex_constants::escape_type_backref,        /*7*/
+      regex_constants::escape_type_backref,        /*8*/
+      regex_constants::escape_type_backref,        /*9*/
+      regex_constants::escape_type_identity,        /*:*/
+      regex_constants::escape_type_identity,        /*;*/
+      regex_constants::escape_type_left_word,        /*<*/
+      regex_constants::escape_type_identity,        /*=*/
+      regex_constants::escape_type_right_word,        /*>*/
+      regex_constants::syntax_question,              /*?*/
+      regex_constants::escape_type_identity,         /*@*/
+      regex_constants::escape_type_start_buffer,     /*A*/
+      regex_constants::escape_type_not_word_assert,  /*B*/
+      regex_constants::escape_type_C,                /*C*/
+      regex_constants::escape_type_not_class,        /*D*/
+      regex_constants::escape_type_E,                /*E*/
+      regex_constants::escape_type_not_class,        /*F*/
+      regex_constants::escape_type_G,                /*G*/
+      regex_constants::escape_type_not_class,        /*H*/
+      regex_constants::escape_type_not_class,        /*I*/
+      regex_constants::escape_type_not_class,        /*J*/
+      regex_constants::escape_type_reset_start_mark, /*K*/
+      regex_constants::escape_type_not_class,        /*L*/
+      regex_constants::escape_type_not_class,        /*M*/
+      regex_constants::escape_type_named_char,       /*N*/
+      regex_constants::escape_type_not_class,        /*O*/
+      regex_constants::escape_type_not_property,     /*P*/
+      regex_constants::escape_type_Q,                /*Q*/
+      regex_constants::escape_type_line_ending,      /*R*/
+      regex_constants::escape_type_not_class,        /*S*/
+      regex_constants::escape_type_not_class,        /*T*/
+      regex_constants::escape_type_not_class,        /*U*/
+      regex_constants::escape_type_not_class,        /*V*/
+      regex_constants::escape_type_not_class,        /*W*/
+      regex_constants::escape_type_X,                /*X*/
+      regex_constants::escape_type_not_class,        /*Y*/
+      regex_constants::escape_type_Z,                /*Z*/
+      regex_constants::escape_type_identity,        /*[*/
+      regex_constants::escape_type_identity,        /*\*/
+      regex_constants::escape_type_identity,        /*]*/
+      regex_constants::escape_type_identity,        /*^*/
+      regex_constants::escape_type_identity,        /*_*/
+      regex_constants::escape_type_start_buffer,        /*`*/
+      regex_constants::escape_type_control_a,        /*a*/
+      regex_constants::escape_type_word_assert,        /*b*/
+      regex_constants::escape_type_ascii_control,        /*c*/
+      regex_constants::escape_type_class,        /*d*/
+      regex_constants::escape_type_e,        /*e*/
+      regex_constants::escape_type_control_f,       /*f*/
+      regex_constants::escape_type_extended_backref,  /*g*/
+      regex_constants::escape_type_class,        /*h*/
+      regex_constants::escape_type_class,        /*i*/
+      regex_constants::escape_type_class,        /*j*/
+      regex_constants::escape_type_extended_backref, /*k*/
+      regex_constants::escape_type_class,        /*l*/
+      regex_constants::escape_type_class,        /*m*/
+      regex_constants::escape_type_control_n,       /*n*/
+      regex_constants::escape_type_class,           /*o*/
+      regex_constants::escape_type_property,        /*p*/
+      regex_constants::escape_type_class,           /*q*/
+      regex_constants::escape_type_control_r,       /*r*/
+      regex_constants::escape_type_class,           /*s*/
+      regex_constants::escape_type_control_t,       /*t*/
+      regex_constants::escape_type_class,         /*u*/
+      regex_constants::escape_type_control_v,       /*v*/
+      regex_constants::escape_type_class,           /*w*/
+      regex_constants::escape_type_hex,             /*x*/
+      regex_constants::escape_type_class,           /*y*/
+      regex_constants::escape_type_end_buffer,      /*z*/
+      regex_constants::syntax_open_brace,           /*{*/
+      regex_constants::syntax_or,                   /*|*/
+      regex_constants::syntax_close_brace,          /*}*/
+      regex_constants::escape_type_identity,        /*~*/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+      regex_constants::escape_type_identity,        /**/
+   };
+
+   return char_syntax[(unsigned char)c];
+}
+
+// is charT c a combining character?
+inline bool  is_combining_implementation(std::uint_least16_t c)
+{
+   const std::uint_least16_t combining_ranges[] = { 0x0300, 0x0361,
+                           0x0483, 0x0486,
+                           0x0903, 0x0903,
+                           0x093E, 0x0940,
+                           0x0949, 0x094C,
+                           0x0982, 0x0983,
+                           0x09BE, 0x09C0,
+                           0x09C7, 0x09CC,
+                           0x09D7, 0x09D7,
+                           0x0A3E, 0x0A40,
+                           0x0A83, 0x0A83,
+                           0x0ABE, 0x0AC0,
+                           0x0AC9, 0x0ACC,
+                           0x0B02, 0x0B03,
+                           0x0B3E, 0x0B3E,
+                           0x0B40, 0x0B40,
+                           0x0B47, 0x0B4C,
+                           0x0B57, 0x0B57,
+                           0x0B83, 0x0B83,
+                           0x0BBE, 0x0BBF,
+                           0x0BC1, 0x0BCC,
+                           0x0BD7, 0x0BD7,
+                           0x0C01, 0x0C03,
+                           0x0C41, 0x0C44,
+                           0x0C82, 0x0C83,
+                           0x0CBE, 0x0CBE,
+                           0x0CC0, 0x0CC4,
+                           0x0CC7, 0x0CCB,
+                           0x0CD5, 0x0CD6,
+                           0x0D02, 0x0D03,
+                           0x0D3E, 0x0D40,
+                           0x0D46, 0x0D4C,
+                           0x0D57, 0x0D57,
+                           0x0F7F, 0x0F7F,
+                           0x20D0, 0x20E1,
+                           0x3099, 0x309A,
+                           0xFE20, 0xFE23,
+                           0xffff, 0xffff, };
+
+   const std::uint_least16_t* p = combining_ranges + 1;
+   while (*p < c) p += 2;
+   --p;
+   if ((c >= *p) && (c <= *(p + 1)))
+      return true;
+   return false;
+}
+
+template <class charT>
+inline bool is_combining(charT c)
+{
+   return (c <= static_cast<charT>(0)) ? false : ((c >= static_cast<charT>((std::numeric_limits<uint_least16_t>::max)())) ? false : is_combining_implementation(static_cast<unsigned short>(c)));
+}
+template <>
+inline bool is_combining<char>(char)
+{
+   return false;
+}
+template <>
+inline bool is_combining<signed char>(signed char)
+{
+   return false;
+}
+template <>
+inline bool is_combining<unsigned char>(unsigned char)
+{
+   return false;
+}
+#ifdef _MSC_VER
+template<>
+inline bool is_combining<wchar_t>(wchar_t c)
+{
+   return is_combining_implementation(static_cast<unsigned short>(c));
+}
+#elif !defined(__DECCXX) && !defined(__osf__) && !defined(__OSF__) && defined(WCHAR_MIN) && (WCHAR_MIN == 0) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+#if defined(WCHAR_MAX) && (WCHAR_MAX <= USHRT_MAX)
+template<>
+inline bool is_combining<wchar_t>(wchar_t c)
+{
+   return is_combining_implementation(static_cast<unsigned short>(c));
+}
+#else
+template<>
+inline bool is_combining<wchar_t>(wchar_t c)
+{
+   return (c >= (std::numeric_limits<uint_least16_t>::max)()) ? false : is_combining_implementation(static_cast<unsigned short>(c));
+}
+#endif
+#endif
+
+//
+// is a charT c a line separator?
+//
+template <class charT>
+inline bool is_separator(charT c)
+{
+   return BOOST_REGEX_MAKE_BOOL(
+      (c == static_cast<charT>('\n'))
+      || (c == static_cast<charT>('\r'))
+      || (c == static_cast<charT>('\f'))
+      || (static_cast<std::uint16_t>(c) == 0x2028u)
+      || (static_cast<std::uint16_t>(c) == 0x2029u)
+      || (static_cast<std::uint16_t>(c) == 0x85u));
+}
+template <>
+inline bool is_separator<char>(char c)
+{
+   return BOOST_REGEX_MAKE_BOOL((c == '\n') || (c == '\r') || (c == '\f'));
+}
+
+//
+// get a default collating element:
+//
+inline std::string  lookup_default_collate_name(const std::string& name)
+{
+   //
+   // these are the POSIX collating names:
+   //
+   static const char* def_coll_names[] = {
+   "NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "alert", "backspace", "tab", "newline",
+   "vertical-tab", "form-feed", "carriage-return", "SO", "SI", "DLE", "DC1", "DC2", "DC3", "DC4", "NAK",
+   "SYN", "ETB", "CAN", "EM", "SUB", "ESC", "IS4", "IS3", "IS2", "IS1", "space", "exclamation-mark",
+   "quotation-mark", "number-sign", "dollar-sign", "percent-sign", "ampersand", "apostrophe",
+   "left-parenthesis", "right-parenthesis", "asterisk", "plus-sign", "comma", "hyphen",
+   "period", "slash", "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
+   "colon", "semicolon", "less-than-sign", "equals-sign", "greater-than-sign",
+   "question-mark", "commercial-at", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P",
+   "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "left-square-bracket", "backslash",
+   "right-square-bracket", "circumflex", "underscore", "grave-accent", "a", "b", "c", "d", "e", "f",
+   "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "left-curly-bracket",
+   "vertical-line", "right-curly-bracket", "tilde", "DEL", "",
+   };
+
+   // these multi-character collating elements
+   // should keep most Western-European locales
+   // happy - we should really localise these a
+   // little more - but this will have to do for
+   // now:
+
+   static const char* def_multi_coll[] = {
+      "ae",
+      "Ae",
+      "AE",
+      "ch",
+      "Ch",
+      "CH",
+      "ll",
+      "Ll",
+      "LL",
+      "ss",
+      "Ss",
+      "SS",
+      "nj",
+      "Nj",
+      "NJ",
+      "dz",
+      "Dz",
+      "DZ",
+      "lj",
+      "Lj",
+      "LJ",
+      "",
+   };
+
+   unsigned int i = 0;
+   while (*def_coll_names[i])
+   {
+      if (def_coll_names[i] == name)
+      {
+         return std::string(1, char(i));
+      }
+      ++i;
+   }
+   i = 0;
+   while (*def_multi_coll[i])
+   {
+      if (def_multi_coll[i] == name)
+      {
+         return def_multi_coll[i];
+      }
+      ++i;
+   }
+   return std::string();
+}
+
+//
+// get the state_id of a character classification, the individual
+// traits classes then transform that state_id into a bitmask:
+//
+template <class charT>
+struct character_pointer_range
+{
+   const charT* p1;
+   const charT* p2;
+
+   bool operator < (const character_pointer_range& r)const
+   {
+      return std::lexicographical_compare(p1, p2, r.p1, r.p2);
+   }
+   bool operator == (const character_pointer_range& r)const
+   {
+      // Not only do we check that the ranges are of equal size before
+      // calling std::equal, but there is no other algorithm available:
+      // not even a non-standard MS one.  So forward to unchecked_equal
+      // in the MS case.
+#ifdef __cpp_lib_robust_nonmodifying_seq_ops
+      return std::equal(p1, p2, r.p1, r.p2);
+#elif defined(BOOST_REGEX_MSVC)
+      if (((p2 - p1) != (r.p2 - r.p1)))
+         return false;
+      const charT* with = r.p1;
+      const charT* pos = p1;
+      while (pos != p2)
+         if (*pos++ != *with++) return false;
+      return true;
+
+#else
+      return ((p2 - p1) == (r.p2 - r.p1)) && std::equal(p1, p2, r.p1);
+#endif
+   }
+};
+template <class charT>
+int get_default_class_id(const charT* p1, const charT* p2)
+{
+   static const charT data[73] = {
+      'a', 'l', 'n', 'u', 'm',
+      'a', 'l', 'p', 'h', 'a',
+      'b', 'l', 'a', 'n', 'k',
+      'c', 'n', 't', 'r', 'l',
+      'd', 'i', 'g', 'i', 't',
+      'g', 'r', 'a', 'p', 'h',
+      'l', 'o', 'w', 'e', 'r',
+      'p', 'r', 'i', 'n', 't',
+      'p', 'u', 'n', 'c', 't',
+      's', 'p', 'a', 'c', 'e',
+      'u', 'n', 'i', 'c', 'o', 'd', 'e',
+      'u', 'p', 'p', 'e', 'r',
+      'v',
+      'w', 'o', 'r', 'd',
+      'x', 'd', 'i', 'g', 'i', 't',
+   };
+
+   static const character_pointer_range<charT> ranges[21] =
+   {
+      {data+0, data+5,}, // alnum
+      {data+5, data+10,}, // alpha
+      {data+10, data+15,}, // blank
+      {data+15, data+20,}, // cntrl
+      {data+20, data+21,}, // d
+      {data+20, data+25,}, // digit
+      {data+25, data+30,}, // graph
+      {data+29, data+30,}, // h
+      {data+30, data+31,}, // l
+      {data+30, data+35,}, // lower
+      {data+35, data+40,}, // print
+      {data+40, data+45,}, // punct
+      {data+45, data+46,}, // s
+      {data+45, data+50,}, // space
+      {data+57, data+58,}, // u
+      {data+50, data+57,}, // unicode
+      {data+57, data+62,}, // upper
+      {data+62, data+63,}, // v
+      {data+63, data+64,}, // w
+      {data+63, data+67,}, // word
+      {data+67, data+73,}, // xdigit
+   };
+   const character_pointer_range<charT>* ranges_begin = ranges;
+   const character_pointer_range<charT>* ranges_end = ranges + (sizeof(ranges)/sizeof(ranges[0]));
+
+   character_pointer_range<charT> t = { p1, p2, };
+   const character_pointer_range<charT>* p = std::lower_bound(ranges_begin, ranges_end, t);
+   if((p != ranges_end) && (t == *p))
+      return static_cast<int>(p - ranges);
+   return -1;
+}
+
+//
+// helper functions:
+//
+template <class charT>
+std::ptrdiff_t global_length(const charT* p)
+{
+   std::ptrdiff_t n = 0;
+   while(*p)
+   {
+      ++p;
+      ++n;
+   }
+   return n;
+}
+template<>
+inline std::ptrdiff_t global_length<char>(const char* p)
+{
+   return (std::strlen)(p);
+}
+#ifndef BOOST_NO_WREGEX
+template<>
+inline std::ptrdiff_t global_length<wchar_t>(const wchar_t* p)
+{
+   return (std::ptrdiff_t)(std::wcslen)(p);
+}
+#endif
+template <class charT>
+inline charT  global_lower(charT c)
+{
+   return c;
+}
+template <class charT>
+inline charT  global_upper(charT c)
+{
+   return c;
+}
+
+inline char  do_global_lower(char c)
+{
+   return static_cast<char>((std::tolower)((unsigned char)c));
+}
+
+inline char  do_global_upper(char c)
+{
+   return static_cast<char>((std::toupper)((unsigned char)c));
+}
+#ifndef BOOST_NO_WREGEX
+inline wchar_t  do_global_lower(wchar_t c)
+{
+   return (std::towlower)(c);
+}
+
+inline wchar_t  do_global_upper(wchar_t c)
+{
+   return (std::towupper)(c);
+}
+#endif
+//
+// This sucks: declare template specialisations of global_lower/global_upper
+// that just forward to the non-template implementation functions.  We do
+// this because there is one compiler (Compaq Tru64 C++) that doesn't seem
+// to differentiate between templates and non-template overloads....
+// what's more, the primary template, plus all overloads have to be
+// defined in the same translation unit (if one is inline they all must be)
+// otherwise the "local template instantiation" compiler option can pick
+// the wrong instantiation when linking:
+//
+template<> inline char  global_lower<char>(char c) { return do_global_lower(c); }
+template<> inline char  global_upper<char>(char c) { return do_global_upper(c); }
+#ifndef BOOST_NO_WREGEX
+template<> inline wchar_t  global_lower<wchar_t>(wchar_t c) { return do_global_lower(c); }
+template<> inline wchar_t  global_upper<wchar_t>(wchar_t c) { return do_global_upper(c); }
+#endif
+
+template <class charT>
+int global_value(charT c)
+{
+   static const charT zero = '0';
+   static const charT nine = '9';
+   static const charT a = 'a';
+   static const charT f = 'f';
+   static const charT A = 'A';
+   static const charT F = 'F';
+
+   if(c > f) return -1;
+   if(c >= a) return 10 + (c - a);
+   if(c > F) return -1;
+   if(c >= A) return 10 + (c - A);
+   if(c > nine) return -1;
+   if(c >= zero) return c - zero;
+   return -1;
+}
+template <class charT, class traits>
+std::intmax_t global_toi(const charT*& p1, const charT* p2, int radix, const traits& t)
+{
+   (void)t; // warning suppression
+   std::intmax_t limit = (std::numeric_limits<std::intmax_t>::max)() / radix;
+   std::intmax_t next_value = t.value(*p1, radix);
+   if((p1 == p2) || (next_value < 0) || (next_value >= radix))
+      return -1;
+   std::intmax_t result = 0;
+   while(p1 != p2)
+   {
+      next_value = t.value(*p1, radix);
+      if((next_value < 0) || (next_value >= radix))
+         break;
+      result *= radix;
+      result += next_value;
+      ++p1;
+      if (result > limit)
+         return -1;
+   }
+   return result;
+}
+
+template <class charT>
+inline typename std::enable_if<(sizeof(charT) > 1), const charT*>::type get_escape_R_string()
+{
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#  pragma warning(disable:4309 4245)
+#endif
+   static const charT e1[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
+      '|', '[', '\x0A', '\x0B', '\x0C', static_cast<charT>(0x85), static_cast<charT>(0x2028),
+      static_cast<charT>(0x2029), ']', ')', ')', '\0' };
+   static const charT e2[] = { '(', '?', '-', 'x', ':', '(', '?', '>', '\x0D', '\x0A', '?',
+      '|', '[', '\x0A', '\x0B', '\x0C', static_cast<charT>(0x85), ']', ')', ')', '\0' };
+
+   charT c = static_cast<charT>(0x2029u);
+   bool b = (static_cast<unsigned>(c) == 0x2029u);
+
+   return (b ? e1 : e2);
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+}
+
+template <class charT>
+inline typename std::enable_if<(sizeof(charT) == 1), const charT*>::type get_escape_R_string()
+{
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(push)
+#  pragma warning(disable:4309 4245)
+#endif
+   static const charT e2[] = { 
+      static_cast<charT>('('), 
+      static_cast<charT>('?'), 
+      static_cast<charT>('-'), 
+      static_cast<charT>('x'), 
+      static_cast<charT>(':'), 
+      static_cast<charT>('('), 
+      static_cast<charT>('?'), 
+      static_cast<charT>('>'), 
+      static_cast<charT>('\x0D'), 
+      static_cast<charT>('\x0A'), 
+      static_cast<charT>('?'),
+      static_cast<charT>('|'), 
+      static_cast<charT>('['), 
+      static_cast<charT>('\x0A'), 
+      static_cast<charT>('\x0B'), 
+      static_cast<charT>('\x0C'), 
+      static_cast<charT>('\x85'), 
+      static_cast<charT>(']'), 
+      static_cast<charT>(')'), 
+      static_cast<charT>(')'), 
+      static_cast<charT>('\0') 
+   };
+   return e2;
+#ifdef BOOST_REGEX_MSVC
+#  pragma warning(pop)
+#endif
+}
+
+} // BOOST_REGEX_DETAIL_NS
+} // boost
+
+#endif