131 lines
4.8 KiB
C++
131 lines
4.8 KiB
C++
#include "helpers/plugin_manager.hpp"
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#include <hex/helpers/logger.hpp>
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#include <filesystem>
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#include <dlfcn.h>
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namespace hex {
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// hex::plugin::<pluginName>::internal::initializePlugin()
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constexpr auto InitializePluginSymbol = "_ZN3hex6plugin{0}{1}8internal16initializePluginEv";
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constexpr auto GetPluginNameSymbol = "_ZN3hex6plugin{0}{1}8internal13getPluginNameEv";
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constexpr auto GetPluginAuthorSymbol = "_ZN3hex6plugin{0}{1}8internal15getPluginAuthorEv";
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constexpr auto GetPluginDescriptionSymbol = "_ZN3hex6plugin{0}{1}8internal20getPluginDescriptionEv";
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constexpr auto SetImGuiContextSymbol = "_ZN3hex6plugin{0}{1}8internal15setImGuiContextEP12ImGuiContext";
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Plugin::Plugin(const fs::path &path) : m_path(path) {
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this->m_handle = dlopen(path.string().c_str(), RTLD_LAZY);
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if (this->m_handle == nullptr) {
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log::error("dlopen failed: {}", dlerror());
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return;
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}
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auto pluginName = fs::path(path).stem().string();
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this->m_initializePluginFunction = getPluginFunction<InitializePluginFunc>(pluginName, InitializePluginSymbol);
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this->m_getPluginNameFunction = getPluginFunction<GetPluginNameFunc>(pluginName, GetPluginNameSymbol);
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this->m_getPluginAuthorFunction = getPluginFunction<GetPluginAuthorFunc>(pluginName, GetPluginAuthorSymbol);
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this->m_getPluginDescriptionFunction = getPluginFunction<GetPluginDescriptionFunc>(pluginName, GetPluginDescriptionSymbol);
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this->m_setImGuiContextFunction = getPluginFunction<SetImGuiContextFunc>(pluginName, SetImGuiContextSymbol);
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}
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Plugin::Plugin(Plugin &&other) noexcept {
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this->m_handle = other.m_handle;
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this->m_path = std::move(other.m_path);
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this->m_initializePluginFunction = other.m_initializePluginFunction;
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this->m_getPluginNameFunction = other.m_getPluginNameFunction;
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this->m_getPluginAuthorFunction = other.m_getPluginAuthorFunction;
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this->m_getPluginDescriptionFunction = other.m_getPluginDescriptionFunction;
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this->m_setImGuiContextFunction = other.m_setImGuiContextFunction;
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other.m_handle = nullptr;
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other.m_initializePluginFunction = nullptr;
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other.m_getPluginNameFunction = nullptr;
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other.m_getPluginAuthorFunction = nullptr;
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other.m_getPluginDescriptionFunction = nullptr;
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other.m_setImGuiContextFunction = nullptr;
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}
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Plugin::~Plugin() {
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if (this->m_handle != nullptr)
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dlclose(this->m_handle);
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}
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bool Plugin::initializePlugin() const {
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if (this->m_initializePluginFunction != nullptr) {
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this->m_initializePluginFunction();
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return true;
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} else {
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return false;
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}
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}
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std::string Plugin::getPluginName() const {
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if (this->m_getPluginNameFunction != nullptr)
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return this->m_getPluginNameFunction();
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else
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return hex::format("Unknown Plugin @ 0x{0:016X}", reinterpret_cast<intptr_t>(this->m_handle));
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}
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std::string Plugin::getPluginAuthor() const {
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if (this->m_getPluginAuthorFunction != nullptr)
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return this->m_getPluginAuthorFunction();
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else
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return "Unknown";
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}
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std::string Plugin::getPluginDescription() const {
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if (this->m_getPluginDescriptionFunction != nullptr)
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return this->m_getPluginDescriptionFunction();
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else
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return "";
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}
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void Plugin::setImGuiContext(ImGuiContext *ctx) const {
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if (this->m_setImGuiContextFunction != nullptr)
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this->m_setImGuiContextFunction(ctx);
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}
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const fs::path& Plugin::getPath() const {
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return this->m_path;
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}
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void* Plugin::getPluginFunction(const std::string &pluginName, const std::string &symbol) {
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auto symbolName = hex::format(symbol.data(), pluginName.length(), pluginName.data());
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return dlsym(this->m_handle, symbolName.c_str());
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}
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bool PluginManager::load(const fs::path &pluginFolder) {
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if (!fs::exists(pluginFolder))
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return false;
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PluginManager::s_pluginFolder = pluginFolder;
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for (auto& pluginPath : fs::directory_iterator(pluginFolder)) {
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if (pluginPath.is_regular_file() && pluginPath.path().extension() == ".hexplug")
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PluginManager::s_plugins.emplace_back(pluginPath.path().string());
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}
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if (PluginManager::s_plugins.empty())
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return false;
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return true;
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}
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void PluginManager::unload() {
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PluginManager::s_plugins.clear();
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PluginManager::s_pluginFolder.clear();
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}
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void PluginManager::reload() {
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PluginManager::unload();
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PluginManager::load(PluginManager::s_pluginFolder);
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}
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}
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