1
0
mirror of synced 2024-12-14 08:42:54 +01:00
ImHex/lib/libimhex/include/hex/providers/buffered_reader.hpp

232 lines
7.8 KiB
C++
Raw Normal View History

ui/ux: Rewrite of the entire hex editor view to make it more flexible (#512) * ui/ux: Initial recreation of the hex editor view * ui/ux: Added back support for editing cells * ux: Make scrolling and selecting bytes feel nice again * ui/ux: Improved byte selecting, added footer * sys: Make math evaluator more generic to support integer only calculations * patterns: Moved value formatting into pattern language * ui/ux: Added Goto and Search popups, improved selection * ui: Added better tooltips for bookmarks and patterns * sys: Use worse hex search algorithm on macOS Sadly it still doesn't support `std::boyer_moore_horsepool_searcher` * ui: Added back missing events, menu items and shortcuts * fix: Bookmark highlighting being rendered off by one * fix: Various macOS build errors * fix: size_t is not u64 on macos * fix: std::fmod and std::pow not working with integer types on macos * fix: Missing semicolons * sys: Added proper integer pow function * ui: Added back support for custom encodings * fix: Editor not jumping to selection when selection gets changed * ui: Turn Hexii setting into a data visualizer * sys: Added back remaining shortcuts * sys: Remove old hex editor files * sys: Moved more legacy things away from the hex editor view, updated localization * fix: Hex editor scrolling behaving weirdly and inconsistently * sys: Cleaned up Hex editor code * sys: Added selection color setting, localized all new settings * fix: Search feature not working correctly * ui: Replace custom ImGui::Disabled function with native ImGui ones * ui: Fix bookmark tooltip rendering issues * fix: Another size_t not being 64 bit issue on MacOS
2022-05-27 20:42:07 +02:00
#pragma once
#include <span>
#include <vector>
#include <hex/providers/provider.hpp>
namespace hex::prv {
class BufferedReader {
public:
explicit BufferedReader(Provider *provider, size_t bufferSize = 0xFF'FFFF) : m_provider(provider), m_maxBufferSize(bufferSize), m_buffer(bufferSize) { }
void seek(u64 address) {
this->m_baseAddress = address;
}
[[nodiscard]] std::vector<u8> read(u64 address, size_t size) {
if (size > this->m_buffer.size()) {
std::vector<u8> result;
result.resize(size);
this->m_provider->read(address, result.data(), result.size());
return result;
}
this->updateBuffer(address, size);
auto result = &this->m_buffer[address - this->m_baseAddress];
return { result, result + std::min(size, this->m_buffer.size()) };
}
[[nodiscard]] std::vector<u8> readReverse(u64 address, size_t size) {
if (size > this->m_buffer.size()) {
std::vector<u8> result;
result.resize(size);
this->m_provider->read(address, result.data(), result.size());
return result;
}
this->updateBuffer(address - std::min<u64>(address, this->m_buffer.size()), size);
auto result = &this->m_buffer[address - this->m_baseAddress];
return { result, result + std::min(size, this->m_buffer.size()) };
}
class Iterator {
public:
using iterator_category = std::forward_iterator_tag;
using difference_type = std::ptrdiff_t;
using value_type = u8;
using pointer = const value_type*;
using reference = const value_type&;
Iterator(BufferedReader *reader, u64 address) : m_reader(reader), m_address(address) {}
Iterator& operator++() {
this->m_address++;
return *this;
}
Iterator operator++(int) {
auto copy = *this;
this->m_address++;
return copy;
}
Iterator& operator+=(i64 offset) {
this->m_address += offset;
return *this;
}
Iterator& operator-=(i64 offset) {
this->m_address -= offset;
return *this;
}
value_type operator*() const {
return (*this)[0];
}
[[nodiscard]] u64 getAddress() const {
return this->m_address;
}
difference_type operator-(const Iterator &other) const {
return this->m_address - other.m_address;
}
Iterator operator+(i64 offset) const {
return { this->m_reader, this->m_address + offset };
}
value_type operator[](i64 offset) const {
auto result = this->m_reader->read(this->m_address + offset, 1);
if (result.empty())
return 0x00;
return result[0];
}
friend bool operator== (const Iterator& left, const Iterator& right) { return left.m_address == right.m_address; };
friend bool operator!= (const Iterator& left, const Iterator& right) { return left.m_address != right.m_address; };
2022-07-26 13:28:21 +02:00
friend bool operator> (const Iterator& left, const Iterator& right) { return left.m_address > right.m_address; };
friend bool operator< (const Iterator& left, const Iterator& right) { return left.m_address < right.m_address; };
friend bool operator>= (const Iterator& left, const Iterator& right) { return left.m_address >= right.m_address; };
friend bool operator<= (const Iterator& left, const Iterator& right) { return left.m_address <= right.m_address; };
ui/ux: Rewrite of the entire hex editor view to make it more flexible (#512) * ui/ux: Initial recreation of the hex editor view * ui/ux: Added back support for editing cells * ux: Make scrolling and selecting bytes feel nice again * ui/ux: Improved byte selecting, added footer * sys: Make math evaluator more generic to support integer only calculations * patterns: Moved value formatting into pattern language * ui/ux: Added Goto and Search popups, improved selection * ui: Added better tooltips for bookmarks and patterns * sys: Use worse hex search algorithm on macOS Sadly it still doesn't support `std::boyer_moore_horsepool_searcher` * ui: Added back missing events, menu items and shortcuts * fix: Bookmark highlighting being rendered off by one * fix: Various macOS build errors * fix: size_t is not u64 on macos * fix: std::fmod and std::pow not working with integer types on macos * fix: Missing semicolons * sys: Added proper integer pow function * ui: Added back support for custom encodings * fix: Editor not jumping to selection when selection gets changed * ui: Turn Hexii setting into a data visualizer * sys: Added back remaining shortcuts * sys: Remove old hex editor files * sys: Moved more legacy things away from the hex editor view, updated localization * fix: Hex editor scrolling behaving weirdly and inconsistently * sys: Cleaned up Hex editor code * sys: Added selection color setting, localized all new settings * fix: Search feature not working correctly * ui: Replace custom ImGui::Disabled function with native ImGui ones * ui: Fix bookmark tooltip rendering issues * fix: Another size_t not being 64 bit issue on MacOS
2022-05-27 20:42:07 +02:00
private:
BufferedReader *m_reader;
u64 m_address;
};
class ReverseIterator {
public:
using iterator_category = std::forward_iterator_tag;
using difference_type = std::ptrdiff_t;
using value_type = u8;
using pointer = const value_type*;
using reference = const value_type&;
ReverseIterator(BufferedReader *reader, u64 address) : m_reader(reader), m_address(address) {}
ReverseIterator& operator++() {
this->m_address--;
return *this;
}
ReverseIterator operator++(int) {
auto copy = *this;
this->m_address--;
return copy;
}
ReverseIterator& operator+=(i64 offset) {
this->m_address -= offset;
return *this;
}
ReverseIterator& operator-=(i64 offset) {
this->m_address += offset;
return *this;
}
value_type operator*() const {
return (*this)[0];
}
[[nodiscard]] u64 getAddress() const {
return this->m_address;
}
difference_type operator-(const ReverseIterator &other) const {
return other.m_address - this->m_address;
}
ReverseIterator operator+(i64 offset) const {
return { this->m_reader, this->m_address - offset };
}
value_type operator[](i64 offset) const {
auto result = this->m_reader->readReverse(this->m_address + offset, 1);
if (result.empty())
return 0x00;
return result[0];
}
friend bool operator== (const ReverseIterator& left, const ReverseIterator& right) { return left.m_address == right.m_address; };
friend bool operator!= (const ReverseIterator& left, const ReverseIterator& right) { return left.m_address != right.m_address; };
2022-07-26 13:28:21 +02:00
friend bool operator> (const ReverseIterator& left, const ReverseIterator& right) { return left.m_address > right.m_address; };
friend bool operator< (const ReverseIterator& left, const ReverseIterator& right) { return left.m_address < right.m_address; };
friend bool operator>= (const ReverseIterator& left, const ReverseIterator& right) { return left.m_address >= right.m_address; };
friend bool operator<= (const ReverseIterator& left, const ReverseIterator& right) { return left.m_address <= right.m_address; };
ui/ux: Rewrite of the entire hex editor view to make it more flexible (#512) * ui/ux: Initial recreation of the hex editor view * ui/ux: Added back support for editing cells * ux: Make scrolling and selecting bytes feel nice again * ui/ux: Improved byte selecting, added footer * sys: Make math evaluator more generic to support integer only calculations * patterns: Moved value formatting into pattern language * ui/ux: Added Goto and Search popups, improved selection * ui: Added better tooltips for bookmarks and patterns * sys: Use worse hex search algorithm on macOS Sadly it still doesn't support `std::boyer_moore_horsepool_searcher` * ui: Added back missing events, menu items and shortcuts * fix: Bookmark highlighting being rendered off by one * fix: Various macOS build errors * fix: size_t is not u64 on macos * fix: std::fmod and std::pow not working with integer types on macos * fix: Missing semicolons * sys: Added proper integer pow function * ui: Added back support for custom encodings * fix: Editor not jumping to selection when selection gets changed * ui: Turn Hexii setting into a data visualizer * sys: Added back remaining shortcuts * sys: Remove old hex editor files * sys: Moved more legacy things away from the hex editor view, updated localization * fix: Hex editor scrolling behaving weirdly and inconsistently * sys: Cleaned up Hex editor code * sys: Added selection color setting, localized all new settings * fix: Search feature not working correctly * ui: Replace custom ImGui::Disabled function with native ImGui ones * ui: Fix bookmark tooltip rendering issues * fix: Another size_t not being 64 bit issue on MacOS
2022-05-27 20:42:07 +02:00
private:
BufferedReader *m_reader;
2022-07-26 13:28:21 +02:00
u64 m_address = 0x00;
ui/ux: Rewrite of the entire hex editor view to make it more flexible (#512) * ui/ux: Initial recreation of the hex editor view * ui/ux: Added back support for editing cells * ux: Make scrolling and selecting bytes feel nice again * ui/ux: Improved byte selecting, added footer * sys: Make math evaluator more generic to support integer only calculations * patterns: Moved value formatting into pattern language * ui/ux: Added Goto and Search popups, improved selection * ui: Added better tooltips for bookmarks and patterns * sys: Use worse hex search algorithm on macOS Sadly it still doesn't support `std::boyer_moore_horsepool_searcher` * ui: Added back missing events, menu items and shortcuts * fix: Bookmark highlighting being rendered off by one * fix: Various macOS build errors * fix: size_t is not u64 on macos * fix: std::fmod and std::pow not working with integer types on macos * fix: Missing semicolons * sys: Added proper integer pow function * ui: Added back support for custom encodings * fix: Editor not jumping to selection when selection gets changed * ui: Turn Hexii setting into a data visualizer * sys: Added back remaining shortcuts * sys: Remove old hex editor files * sys: Moved more legacy things away from the hex editor view, updated localization * fix: Hex editor scrolling behaving weirdly and inconsistently * sys: Cleaned up Hex editor code * sys: Added selection color setting, localized all new settings * fix: Search feature not working correctly * ui: Replace custom ImGui::Disabled function with native ImGui ones * ui: Fix bookmark tooltip rendering issues * fix: Another size_t not being 64 bit issue on MacOS
2022-05-27 20:42:07 +02:00
};
Iterator begin() {
return { this, this->m_baseAddress };
}
Iterator end() {
2022-07-26 13:28:21 +02:00
return { this, this->m_provider->getActualSize() };
ui/ux: Rewrite of the entire hex editor view to make it more flexible (#512) * ui/ux: Initial recreation of the hex editor view * ui/ux: Added back support for editing cells * ux: Make scrolling and selecting bytes feel nice again * ui/ux: Improved byte selecting, added footer * sys: Make math evaluator more generic to support integer only calculations * patterns: Moved value formatting into pattern language * ui/ux: Added Goto and Search popups, improved selection * ui: Added better tooltips for bookmarks and patterns * sys: Use worse hex search algorithm on macOS Sadly it still doesn't support `std::boyer_moore_horsepool_searcher` * ui: Added back missing events, menu items and shortcuts * fix: Bookmark highlighting being rendered off by one * fix: Various macOS build errors * fix: size_t is not u64 on macos * fix: std::fmod and std::pow not working with integer types on macos * fix: Missing semicolons * sys: Added proper integer pow function * ui: Added back support for custom encodings * fix: Editor not jumping to selection when selection gets changed * ui: Turn Hexii setting into a data visualizer * sys: Added back remaining shortcuts * sys: Remove old hex editor files * sys: Moved more legacy things away from the hex editor view, updated localization * fix: Hex editor scrolling behaving weirdly and inconsistently * sys: Cleaned up Hex editor code * sys: Added selection color setting, localized all new settings * fix: Search feature not working correctly * ui: Replace custom ImGui::Disabled function with native ImGui ones * ui: Fix bookmark tooltip rendering issues * fix: Another size_t not being 64 bit issue on MacOS
2022-05-27 20:42:07 +02:00
}
ReverseIterator rbegin() {
return { this, this->m_baseAddress };
}
ReverseIterator rend() {
return { this, std::numeric_limits<u64>::max() };
}
private:
void updateBuffer(u64 address, size_t size) {
if (!this->m_bufferValid || address < this->m_baseAddress || address + size > (this->m_baseAddress + this->m_buffer.size())) {
const auto remainingBytes = this->m_provider->getActualSize() - address;
if (remainingBytes < this->m_maxBufferSize)
this->m_buffer.resize(remainingBytes);
this->m_provider->read(address, this->m_buffer.data(), this->m_buffer.size());
this->m_baseAddress = address;
this->m_bufferValid = true;
}
}
private:
Provider *m_provider;
size_t m_maxBufferSize;
bool m_bufferValid = false;
u64 m_baseAddress = 0x00;
std::vector<u8> m_buffer;
};
}