winamp/Src/nu/wa_str.h

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2024-09-24 14:54:57 +02:00
#pragma once
#ifdef WA_STR_EXPORT
#include <bfc/platform/export.h>
#define DLLIMPORT DLLEXPORT
#else
#define DLLIMPORT
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* if you need a temporary ref counted string to pass INTO a function
and have a hardcoded string you want to define on the stack,
you can use this macro.
e.g. wa_str myStr = WA_STR_STATIC("test"); */
#define WA_STR_STATIC(x) ((wa_str)"\0\0\0\0" ## x);
typedef void *wa_str;
/* convert a C string into a ref counted string
if you own the string, try using wa_str_own instead */
DLLIMPORT wa_str wa_strdup(const char *);
/* add a reference to a string
returns the new pointer to use!!!
in some cases (e.g. WA_STR_STATIC strings) the string must be re-malloc'd
so be sure to assign the return value to your string
e.g. wa_str myCopy = wa_str_addref(str); */
DLLIMPORT wa_str wa_str_retain(wa_str str);
/* release a reference to a string */
DLLIMPORT void wa_str_release(wa_str str);
/* gets a C-style string from a ref counted string.
only valid for as long as you hold a reference! */
DLLIMPORT const char *wa_str_get(wa_str str);
/* copies the contents of a ref counted string into the passed buffer
*dest = 0 on empty string */
DLLIMPORT void wa_str_strcpy(wa_str str, char *dest, size_t destlen);
/* allocates a reference counted string large enough to hold the given character count
len MUST include null terminator (e.g. pass 5 to malloc enough for "test")
data is set to where the character data can be written to.
you'll need to null terminate the string you write */
DLLIMPORT wa_str wa_str_malloc(size_t len, char **data);
/* allocates a reference counted string using a C string you already have
frees your string with the supplied free_func when reference count reaches 0 */
DLLIMPORT wa_str wa_str_own(char *ptr, void (*free_func)(char *));
/* a convenient typedef for the above function.
if you want to pass the standard C free() function
use (WA_STR_FREE_FUNC)free */
typedef void (*WA_STR_FREE_FUNC)(char *);
#ifdef __cplusplus
}
#endif