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/*******************************************************************************
* Copyright 2009-2016 Jörg Müller
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
#pragma once
/**
* @file PluginManager.h
* @ingroup plugin
* The PluginManager class.
*/
#include "Audaspace.h"
#include <unordered_map>
#include <string>
AUD_NAMESPACE_BEGIN
/**
* This manager provides utilities for plugin loading.
*/
class AUD_API PluginManager
{
private:
static std::unordered_map<std::string, void*> m_plugins;
// delete copy constructor and operator=
PluginManager(const PluginManager&) = delete;
PluginManager& operator=(const PluginManager&) = delete;
PluginManager() = delete;
public:
/**
* Opens a shared library.
* @param path The path to the file.
* @return A handle to the library or nullptr if opening failed.
*/
static void* openLibrary(const std::string& path);
/**
* Looks up a symbol from an opened library.
* @param handle The handle to the opened library.
* @param name The name of the symbol to look up.
* @return The symbol or nullptr if the symbol was not found.
*/
static void* lookupLibrary(void* handle, const std::string& name);
/**
* Closes an opened shared library.
* @param handle The handle to the library to be closed.
*/
static void closeLibrary(void* handle);
/**
* Loads a plugin from a file.
* @param path The path to the file.
* @return Whether the file could successfully be loaded.
*/
static bool loadPlugin(const std::string& path);
/**
* Loads all plugins found in a folder.
* @param path The path to the folder containing the plugins.
*/
static void loadPlugins(const std::string& path = "");
};
AUD_NAMESPACE_END
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