324 lines
13 KiB
C++
324 lines
13 KiB
C++
#include "content/views/view_diff.hpp"
|
|
|
|
#include <hex/api/imhex_api.hpp>
|
|
|
|
#include <hex/helpers/fmt.hpp>
|
|
#include <hex/providers/buffered_reader.hpp>
|
|
|
|
namespace hex::plugin::builtin {
|
|
|
|
namespace {
|
|
|
|
constexpr u32 getDiffColor(u32 color) {
|
|
return (color & 0x00FFFFFF) | 0x40000000;
|
|
}
|
|
|
|
}
|
|
|
|
ViewDiff::ViewDiff() : View::Window("hex.builtin.view.diff.name", ICON_VS_DIFF_SIDEBYSIDE) {
|
|
|
|
// Clear the selected diff providers when a provider is closed
|
|
EventProviderClosed::subscribe(this, [this](prv::Provider *) {
|
|
for (u8 i = 0; i < 2; i++) {
|
|
m_columns[i].provider = -1;
|
|
m_columns[i].hexEditor.setSelectionUnchecked(std::nullopt, std::nullopt);
|
|
}
|
|
|
|
m_diffs.clear();
|
|
});
|
|
|
|
// Set the background highlight callbacks for the two hex editor columns
|
|
m_columns[0].hexEditor.setBackgroundHighlightCallback(this->createCompareFunction(1));
|
|
m_columns[1].hexEditor.setBackgroundHighlightCallback(this->createCompareFunction(0));
|
|
}
|
|
|
|
ViewDiff::~ViewDiff() {
|
|
EventProviderClosed::unsubscribe(this);
|
|
}
|
|
|
|
namespace {
|
|
|
|
bool drawDiffColumn(ViewDiff::Column &column, float height) {
|
|
bool scrolled = false;
|
|
ImGui::PushID(&column);
|
|
|
|
// Draw the hex editor
|
|
float prevScroll = column.hexEditor.getScrollPosition();
|
|
column.hexEditor.draw(height);
|
|
float currScroll = column.hexEditor.getScrollPosition();
|
|
|
|
// Check if the user scrolled the hex editor
|
|
if (prevScroll != currScroll) {
|
|
scrolled = true;
|
|
column.scrollLock = 5;
|
|
}
|
|
|
|
ImGui::PopID();
|
|
|
|
return scrolled;
|
|
}
|
|
|
|
bool drawProviderSelector(ViewDiff::Column &column) {
|
|
bool shouldReanalyze = false;
|
|
|
|
ImGui::PushID(&column);
|
|
|
|
auto &providers = ImHexApi::Provider::getProviders();
|
|
auto &providerIndex = column.provider;
|
|
|
|
// Get the name of the currently selected provider
|
|
std::string preview;
|
|
if (ImHexApi::Provider::isValid() && providerIndex >= 0)
|
|
preview = providers[providerIndex]->getName();
|
|
|
|
// Draw combobox with all available providers
|
|
ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
|
|
if (ImGui::BeginCombo("", preview.c_str())) {
|
|
|
|
for (size_t i = 0; i < providers.size(); i++) {
|
|
ImGui::PushID(i + 1);
|
|
if (ImGui::Selectable(providers[i]->getName().c_str())) {
|
|
providerIndex = i;
|
|
shouldReanalyze = true;
|
|
}
|
|
ImGui::PopID();
|
|
}
|
|
|
|
ImGui::EndCombo();
|
|
}
|
|
|
|
ImGui::PopID();
|
|
|
|
return shouldReanalyze;
|
|
}
|
|
|
|
}
|
|
|
|
std::function<std::optional<color_t>(u64, const u8*, size_t)> ViewDiff::createCompareFunction(size_t otherIndex) const {
|
|
// Create a function that will handle highlighting the differences between the two providers
|
|
// This is a stupidly simple diffing implementation. It will highlight bytes that are different in yellow
|
|
// and if one provider is larger than the other it will highlight the extra bytes in green or red depending on which provider is larger
|
|
// TODO: Use an actual binary diffing algorithm that searches for the longest common subsequences
|
|
|
|
return [this, otherIndex](u64 address, const u8 *data, size_t) -> std::optional<color_t> {
|
|
const auto &providers = ImHexApi::Provider::getProviders();
|
|
auto otherId = m_columns[otherIndex].provider;
|
|
|
|
// Check if the other provider is valid
|
|
if (otherId < 0 || size_t(otherId) >= providers.size())
|
|
return std::nullopt;
|
|
|
|
auto &otherProvider = providers[otherId];
|
|
|
|
// Handle the case where one provider is larger than the other one
|
|
if ((address - otherProvider->getBaseAddress()) > otherProvider->getActualSize()) {
|
|
if (otherIndex == 1)
|
|
return getDiffColor(ImGuiExt::GetCustomColorU32(ImGuiCustomCol_DiffAdded));
|
|
else
|
|
return getDiffColor(ImGuiExt::GetCustomColorU32(ImGuiCustomCol_DiffRemoved));
|
|
}
|
|
|
|
// Read the current byte from the other provider
|
|
u8 otherByte = 0x00;
|
|
otherProvider->read(address, &otherByte, 1);
|
|
|
|
// Compare the two bytes, highlight both in yellow if they are different
|
|
if (otherByte != *data)
|
|
return getDiffColor(ImGuiExt::GetCustomColorU32(ImGuiCustomCol_DiffChanged));
|
|
|
|
// No difference
|
|
return std::nullopt;
|
|
};
|
|
}
|
|
|
|
void ViewDiff::analyze(prv::Provider *providerA, prv::Provider *providerB) {
|
|
auto commonSize = std::min(providerA->getActualSize(), providerB->getActualSize());
|
|
m_diffTask = TaskManager::createTask("Diffing...", commonSize, [this, providerA, providerB](Task &task) {
|
|
std::vector<Diff> differences;
|
|
|
|
// Set up readers for both providers
|
|
auto readerA = prv::ProviderReader(providerA);
|
|
auto readerB = prv::ProviderReader(providerB);
|
|
|
|
// Iterate over both providers and compare the bytes
|
|
for (auto itA = readerA.begin(), itB = readerB.begin(); itA < readerA.end() && itB < readerB.end(); ++itA, ++itB) {
|
|
// Stop comparing if the diff task was canceled
|
|
if (task.wasInterrupted())
|
|
break;
|
|
|
|
// If the bytes are different, find the end of the difference
|
|
if (*itA != *itB) {
|
|
u64 start = itA.getAddress();
|
|
size_t end = 0;
|
|
|
|
while (itA != readerA.end() && itB != readerB.end() && *itA != *itB) {
|
|
++itA;
|
|
++itB;
|
|
++end;
|
|
}
|
|
|
|
// Add the difference to the list
|
|
differences.push_back(Diff { Region{ start, end }, ViewDiff::DifferenceType::Modified });
|
|
}
|
|
|
|
// Update the progress bar
|
|
task.update(itA.getAddress());
|
|
}
|
|
|
|
// If one provider is larger than the other, add the extra bytes to the list
|
|
if (providerA->getActualSize() != providerB->getActualSize()) {
|
|
auto endA = providerA->getActualSize() + 1;
|
|
auto endB = providerB->getActualSize() + 1;
|
|
|
|
if (endA > endB)
|
|
differences.push_back(Diff { Region{ endB, endA - endB }, ViewDiff::DifferenceType::Added });
|
|
else
|
|
differences.push_back(Diff { Region{ endA, endB - endA }, ViewDiff::DifferenceType::Removed });
|
|
}
|
|
|
|
// Move the calculated differences over so they can be displayed
|
|
m_diffs = std::move(differences);
|
|
m_analyzed = true;
|
|
});
|
|
}
|
|
|
|
void ViewDiff::drawContent() {
|
|
auto &[a, b] = m_columns;
|
|
|
|
a.hexEditor.enableSyncScrolling(false);
|
|
b.hexEditor.enableSyncScrolling(false);
|
|
|
|
if (a.scrollLock > 0) a.scrollLock--;
|
|
if (b.scrollLock > 0) b.scrollLock--;
|
|
|
|
// Change the hex editor providers if the user selected a new provider
|
|
{
|
|
const auto &providers = ImHexApi::Provider::getProviders();
|
|
if (a.provider >= 0 && size_t(a.provider) < providers.size())
|
|
a.hexEditor.setProvider(providers[a.provider]);
|
|
else
|
|
a.hexEditor.setProvider(nullptr);
|
|
|
|
if (b.provider >= 0 && size_t(b.provider) < providers.size())
|
|
b.hexEditor.setProvider(providers[b.provider]);
|
|
else
|
|
b.hexEditor.setProvider(nullptr);
|
|
}
|
|
|
|
// Analyze the providers if they are valid and the user selected a new provider
|
|
if (!m_analyzed && a.provider != -1 && b.provider != -1 && !m_diffTask.isRunning()) {
|
|
const auto &providers = ImHexApi::Provider::getProviders();
|
|
auto providerA = providers[a.provider];
|
|
auto providerB = providers[b.provider];
|
|
|
|
this->analyze(providerA, providerB);
|
|
}
|
|
|
|
const auto height = ImGui::GetContentRegionAvail().y;
|
|
|
|
// Draw the two hex editor columns side by side
|
|
if (ImGui::BeginTable("##binary_diff", 2, ImGuiTableFlags_None, ImVec2(0, height - 250_scaled))) {
|
|
ImGui::TableSetupColumn("hex.builtin.view.diff.provider_a"_lang);
|
|
ImGui::TableSetupColumn("hex.builtin.view.diff.provider_b"_lang);
|
|
ImGui::TableHeadersRow();
|
|
|
|
ImGui::BeginDisabled(m_diffTask.isRunning());
|
|
{
|
|
// Draw first provider selector
|
|
ImGui::TableNextColumn();
|
|
if (drawProviderSelector(a)) m_analyzed = false;
|
|
|
|
// Draw second provider selector
|
|
ImGui::TableNextColumn();
|
|
if (drawProviderSelector(b)) m_analyzed = false;
|
|
}
|
|
ImGui::EndDisabled();
|
|
|
|
ImGui::TableNextRow();
|
|
|
|
// Draw first hex editor column
|
|
ImGui::TableNextColumn();
|
|
bool scrollB = drawDiffColumn(a, height - 250_scaled);
|
|
|
|
// Draw second hex editor column
|
|
ImGui::TableNextColumn();
|
|
bool scrollA = drawDiffColumn(b, height - 250_scaled);
|
|
|
|
// Sync the scroll positions of the hex editors
|
|
{
|
|
if (scrollA && a.scrollLock == 0) {
|
|
a.hexEditor.setScrollPosition(b.hexEditor.getScrollPosition());
|
|
a.hexEditor.forceUpdateScrollPosition();
|
|
}
|
|
if (scrollB && b.scrollLock == 0) {
|
|
b.hexEditor.setScrollPosition(a.hexEditor.getScrollPosition());
|
|
b.hexEditor.forceUpdateScrollPosition();
|
|
}
|
|
}
|
|
|
|
ImGui::EndTable();
|
|
}
|
|
|
|
// Draw the differences table
|
|
if (ImGui::BeginTable("##differences", 3, ImGuiTableFlags_Borders | ImGuiTableFlags_ScrollY | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Resizable, ImVec2(0, 200_scaled))) {
|
|
ImGui::TableSetupScrollFreeze(0, 1);
|
|
ImGui::TableSetupColumn("hex.ui.common.begin"_lang);
|
|
ImGui::TableSetupColumn("hex.ui.common.end"_lang);
|
|
ImGui::TableSetupColumn("hex.ui.common.type"_lang);
|
|
ImGui::TableHeadersRow();
|
|
|
|
// Draw the differences if the providers have been analyzed
|
|
if (m_analyzed) {
|
|
ImGuiListClipper clipper;
|
|
clipper.Begin(int(m_diffs.size()));
|
|
|
|
while (clipper.Step())
|
|
for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++) {
|
|
ImGui::TableNextRow();
|
|
|
|
// Prevent the list from trying to access non-existing diffs
|
|
if (size_t(i) >= m_diffs.size())
|
|
break;
|
|
|
|
ImGui::PushID(i);
|
|
|
|
const auto &diff = m_diffs[i];
|
|
|
|
// Draw a clickable row for each difference that will select the difference in both hex editors
|
|
|
|
// Draw start address
|
|
ImGui::TableNextColumn();
|
|
if (ImGui::Selectable(hex::format("0x{:02X}", diff.region.getStartAddress()).c_str(), false, ImGuiSelectableFlags_SpanAllColumns)) {
|
|
a.hexEditor.setSelection(diff.region);
|
|
a.hexEditor.jumpToSelection();
|
|
b.hexEditor.setSelection(diff.region);
|
|
b.hexEditor.jumpToSelection();
|
|
}
|
|
|
|
// Draw end address
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextUnformatted(hex::format("0x{:02X}", diff.region.getEndAddress()).c_str());
|
|
|
|
// Draw difference type
|
|
ImGui::TableNextColumn();
|
|
switch (diff.type) {
|
|
case DifferenceType::Modified:
|
|
ImGuiExt::TextFormattedColored(ImGuiExt::GetCustomColorVec4(ImGuiCustomCol_DiffChanged), "hex.builtin.view.diff.modified"_lang);
|
|
break;
|
|
case DifferenceType::Added:
|
|
ImGuiExt::TextFormattedColored(ImGuiExt::GetCustomColorVec4(ImGuiCustomCol_DiffAdded), "hex.builtin.view.diff.added"_lang);
|
|
break;
|
|
case DifferenceType::Removed:
|
|
ImGuiExt::TextFormattedColored(ImGuiExt::GetCustomColorVec4(ImGuiCustomCol_DiffRemoved), "hex.builtin.view.diff.removed"_lang);
|
|
break;
|
|
}
|
|
|
|
ImGui::PopID();
|
|
}
|
|
}
|
|
|
|
ImGui::EndTable();
|
|
}
|
|
}
|
|
|
|
} |