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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
#include "Core/precomp.h"
#include "API/Core/System/cl_library.h"
std::map<std::string, CL_LibraryFactoryMaker *, std::less<std::string> > CL_LibraryManager::libraries;
CL_LibraryLoader::CL_LibraryLoader(const std::string& file) : filename(file), loaded(false), handle(0), last_error(0)
{
if(filename.rfind(".dll",filename.size()) == -1)
{
filename.append(".dll");
}
}
CL_LibraryLoader::~CL_LibraryLoader()
{
// Don't forget to unload the library if needed
if((loaded == true) && (handle != 0))
unload();
}
std::string CL_LibraryLoader::name() const
{
return filename;
}
bool CL_LibraryLoader::is_loaded() const
{
return loaded;
}
void *CL_LibraryLoader::resolve(const std::string& symbol)
{
// Just in case the handle has been corrupted
if(handle == 0)
return 0;
// Lookup the symbol name
void *adr = (void *) GetProcAddress(handle,symbol.c_str());
if(adr == 0)
{
if(last_error != 0)
delete last_error;
last_error = new CL_Error(std::string("Couldn't find " + symbol + " within " + filename));
return 0;
}
return adr;
}
bool CL_LibraryLoader::load()
{
handle = LoadLibrary(filename.c_str());
if(handle == 0)
{
if(last_error != 0)
delete last_error;
last_error = new CL_Error(std::string("Couldn't load " + filename));
loaded = false;
}
else
{
loaded = true;
}
return loaded;
}
bool CL_LibraryLoader::unload()
{
if(last_error != 0)
{
delete last_error;
last_error = 0;
}
// Well if the handle is already NULL, don't need to unload it again
if(handle == 0)
return true;
if(FreeLibrary(handle) == 0)
{
last_error = new CL_Error(std::string("Couldn't unload " + filename));
return false;
}
handle = 0;
loaded = false;
return true;
}
CL_Error *CL_LibraryLoader::get_last_error() const
{
if(last_error == 0)
return new CL_Error("No CL_Library has been set");
return last_error;
}
CL_LibraryFactoryMaker_t CL_LibraryManager::get(const std::string& lib_name)
{
std::map<std::string, CL_LibraryFactoryMaker *, std::less<std::string> >::iterator libs_itr;
CL_LibraryFactoryMaker_t lib;
bool found = true;
if((libs_itr = libraries.find(lib_name)) != libraries.end())
{
lib = (*libs_itr).second;
}
else
{
found = false;
}
if(found == false)
return 0;
return lib;
}
void CL_LibraryManager::add(const std::string& lib_name,CL_LibraryFactoryMaker *lib)
{
libraries[lib_name] = lib;
}
void CL_LibraryManager::remove(const std::string& lib_name)
{
if(libraries.find(lib_name) != libraries.end())
libraries.erase(lib_name);
}
bool CL_LibraryManager::has(const std::string& lib_name)
{
if(libraries.find(lib_name) != libraries.end())
return true;
return false;
}
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