74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
// Copyright (C) 2023 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/PluginLoader.hpp>
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#include <Nazara/Core/DynLib.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <NazaraUtils/Algorithm.hpp>
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#include <stdexcept>
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#include <Nazara/Core/Debug.hpp>
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namespace Nz
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{
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PluginLoader::PluginLoader()
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{
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AddSearchDirectory(".");
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AddSearchDirectory("plugins");
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if (const char* path = getenv("NAZARA_PLUGIN_DIR"))
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AddSearchDirectory(Utf8Path(path));
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}
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void PluginLoader::AddSearchDirectory(const std::filesystem::path& directoryPath)
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{
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m_directories.push_back(std::filesystem::absolute(directoryPath));
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}
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#ifndef NAZARA_PLUGINS_STATIC
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GenericPlugin PluginLoader::Load(const std::filesystem::path& pluginPath, bool activate)
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{
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std::filesystem::path path = pluginPath;
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if (path.extension() != NAZARA_DYNLIB_EXTENSION)
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path += NAZARA_DYNLIB_EXTENSION;
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if (!path.is_absolute())
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{
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for (const std::filesystem::path& dir : m_directories)
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{
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std::filesystem::path testPath = dir / path;
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if (std::filesystem::exists(testPath))
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{
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path = testPath;
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break;
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}
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}
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}
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DynLib library;
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if (!library.Load(path))
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throw std::runtime_error("failed to load plugin");
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PluginLoadCallback loadFunc = reinterpret_cast<PluginLoadCallback>(library.GetSymbol("PluginLoad"));
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if (!loadFunc)
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throw std::runtime_error("failed to load plugin: PluginLoad symbol not found");
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std::unique_ptr<PluginInterface> pluginInterface = std::unique_ptr<PluginInterface>(loadFunc());
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if (!pluginInterface)
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throw std::runtime_error("plugin failed to load");
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if (activate && !pluginInterface->Activate())
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throw std::runtime_error("failed to activate plugin");
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return GenericPlugin(std::move(library), std::move(pluginInterface), activate);
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}
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#endif
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void PluginLoader::RemoveSearchDirectory(const std::filesystem::path& directoryPath)
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{
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auto it = std::find(m_directories.begin(), m_directories.end(), std::filesystem::absolute(directoryPath));
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if (it != m_directories.end())
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m_directories.erase(it);
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}
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}
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