E:/Programming/MyProject/K_Game_hg/GameEngine/include/engine/Plugin.h

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// Copyright 2006-2011 by Kat'Oun

#ifndef _PLUGIN_H_
#define _PLUGIN_H_

#include <EngineConfig.h>
#include <core/Types.h>
#include <engine/Object.h>

#include <string>

#if ENGINE_PLATFORM == PLATFORM_WIN32
#    define DYNLIB_HANDLE hInstance
#    define DYNLIB_LOAD( a ) LoadLibraryEx( a, NULL, LOAD_WITH_ALTERED_SEARCH_PATH )
#    define DYNLIB_GETSYM( a, b ) GetProcAddress( a, b )
#    define DYNLIB_UNLOAD( a ) !FreeLibrary( a )

struct HINSTANCE__;
typedef struct HINSTANCE__* hInstance;

#elif ENGINE_PLATFORM == PLATFORM_LINUX
#    define DYNLIB_HANDLE void*
#    define DYNLIB_LOAD( a ) dlopen( a, RTLD_LAZY | RTLD_GLOBAL)
#    define DYNLIB_GETSYM( a, b ) dlsym( a, b )
#    define DYNLIB_UNLOAD( a ) dlclose( a )

#elif ENGINE_PLATFORM == PLATFORM_APPLE
#    define DYNLIB_HANDLE CFBundleRef
#    define DYNLIB_LOAD( a ) mac_loadExeBundle( a )
#    define DYNLIB_GETSYM( a, b ) mac_getBundleSym( a, b )
#    define DYNLIB_UNLOAD( a ) mac_unloadExeBundle( a )
#endif

namespace engine
{

typedef void (*DLL_LOAD_PLUGIN)();
typedef void (*DLL_UNLOAD_PLUGIN)();

class ENGINE_PUBLIC_EXPORT Plugin: public Object
{
public:
        Plugin(std::string& name, std::string& filename);

        ~Plugin();

        const std::string& getFilename() const;

        bool load();
        void unload();
        bool reload();
        
        void* getSymbol(const std::string& strName) const throw();

protected:

        std::string mFileName;
        std::string dynlibError();

        bool mLoaded;

        // Handle to the loaded library.
        DYNLIB_HANDLE m_hInst;
};

} // end namespace engine

#endif