145 lines
4.0 KiB
C++
145 lines
4.0 KiB
C++
#include <hex/providers/provider.hpp>
|
|
|
|
#include <hex.hpp>
|
|
|
|
#include <cmath>
|
|
#include <cstring>
|
|
#include <map>
|
|
#include <optional>
|
|
#include <string>
|
|
|
|
namespace hex::prv {
|
|
|
|
Provider::Provider() {
|
|
this->m_patches.emplace_back();
|
|
}
|
|
|
|
Provider::~Provider() {
|
|
for (auto &overlay : this->m_overlays)
|
|
this->deleteOverlay(overlay);
|
|
}
|
|
|
|
void Provider::read(u64 offset, void *buffer, size_t size, bool overlays) {
|
|
this->readRaw(offset - this->getBaseAddress(), buffer, size);
|
|
}
|
|
|
|
void Provider::write(u64 offset, const void *buffer, size_t size) {
|
|
this->writeRaw(offset - this->getBaseAddress(), buffer, size);
|
|
}
|
|
|
|
void Provider::save() { }
|
|
void Provider::saveAs(const std::string &path) { }
|
|
|
|
void Provider::resize(ssize_t newSize) { }
|
|
|
|
void Provider::applyOverlays(u64 offset, void *buffer, size_t size) {
|
|
for (auto &overlay : this->m_overlays) {
|
|
auto overlayOffset = overlay->getAddress();
|
|
auto overlaySize = overlay->getSize();
|
|
|
|
s128 overlapMin = std::max(offset, overlayOffset);
|
|
s128 overlapMax = std::min(offset + size, overlayOffset + overlaySize);
|
|
if (overlapMax > overlapMin)
|
|
std::memcpy(static_cast<u8*>(buffer) + std::max<s128>(0, overlapMin - offset), overlay->getData().data() + std::max<s128>(0, overlapMin - overlayOffset), overlapMax - overlapMin);
|
|
}
|
|
}
|
|
|
|
|
|
std::map<u64, u8>& Provider::getPatches() {
|
|
return *(this->m_patches.end() - 1 - this->m_patchTreeOffset);
|
|
}
|
|
|
|
const std::map<u64, u8>& Provider::getPatches() const {
|
|
return *(this->m_patches.end() - 1 - this->m_patchTreeOffset);
|
|
}
|
|
|
|
void Provider::applyPatches() {
|
|
for (auto &[patchAddress, patch] : getPatches())
|
|
this->writeRaw( - this->getBaseAddress(), &patch, 1);
|
|
}
|
|
|
|
|
|
Overlay* Provider::newOverlay() {
|
|
return this->m_overlays.emplace_back(new Overlay());
|
|
}
|
|
|
|
void Provider::deleteOverlay(Overlay *overlay) {
|
|
this->m_overlays.erase(std::find(this->m_overlays.begin(), this->m_overlays.end(), overlay));
|
|
delete overlay;
|
|
}
|
|
|
|
const std::list<Overlay*>& Provider::getOverlays() {
|
|
return this->m_overlays;
|
|
}
|
|
|
|
|
|
u32 Provider::getPageCount() const {
|
|
return std::ceil(this->getActualSize() / double(PageSize));
|
|
}
|
|
|
|
u32 Provider::getCurrentPage() const {
|
|
return this->m_currPage;
|
|
}
|
|
|
|
void Provider::setCurrentPage(u32 page) {
|
|
if (page < getPageCount())
|
|
this->m_currPage = page;
|
|
}
|
|
|
|
|
|
void Provider::setBaseAddress(u64 address) {
|
|
this->m_baseAddress = address;
|
|
}
|
|
|
|
u64 Provider::getBaseAddress() const {
|
|
return this->m_baseAddress;
|
|
}
|
|
|
|
u64 Provider::getCurrentPageAddress() const {
|
|
return PageSize * this->getCurrentPage();
|
|
}
|
|
|
|
size_t Provider::getSize() const {
|
|
return std::min(this->getActualSize() - PageSize * this->m_currPage, PageSize);
|
|
}
|
|
|
|
std::optional<u32> Provider::getPageOfAddress(u64 address) const {
|
|
u32 page = std::floor((address - this->getBaseAddress()) / double(PageSize));
|
|
|
|
if (page >= this->getPageCount())
|
|
return { };
|
|
|
|
return page;
|
|
}
|
|
|
|
void Provider::addPatch(u64 offset, const void *buffer, size_t size) {
|
|
if (this->m_patchTreeOffset > 0) {
|
|
this->m_patches.erase(this->m_patches.end() - this->m_patchTreeOffset, this->m_patches.end());
|
|
this->m_patchTreeOffset = 0;
|
|
}
|
|
|
|
this->m_patches.push_back(getPatches());
|
|
|
|
for (u64 i = 0; i < size; i++)
|
|
getPatches()[offset + i] = reinterpret_cast<const u8*>(buffer)[i];
|
|
}
|
|
|
|
void Provider::undo() {
|
|
if (canUndo())
|
|
this->m_patchTreeOffset++;
|
|
}
|
|
|
|
void Provider::redo() {
|
|
if (canRedo())
|
|
this->m_patchTreeOffset--;
|
|
}
|
|
|
|
bool Provider::canUndo() const {
|
|
return this->m_patchTreeOffset < this->m_patches.size() - 1;
|
|
}
|
|
|
|
bool Provider::canRedo() const {
|
|
return this->m_patchTreeOffset > 0;
|
|
}
|
|
|
|
} |