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////////////////////////////////////////////////////////////
//
// Pluma - Plug-in Management Framework
// Copyright (C) 2010-2012 Gil Costa (gsaurus@gmail.com)
//
// 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.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <Pluma/DLibrary.hpp>
#include <cstdio>
#include <string>
namespace pluma{
////////////////////////////////////////////////////////////
DLibrary* DLibrary::load(const std::string& path){
if ( path.empty() ){
fprintf(stderr, "Failed to load library: Empty path\n");
return NULL;
}
void* handle = NULL;
// load library - OS dependent operation
#ifdef PLUMA_SYS_WINDOWS
handle = ::LoadLibraryA(path.c_str());
if (!handle){
fprintf(stderr, "Failed to load library \"%s\".\n", path.c_str());
return NULL;
}
#else
handle = ::dlopen(path.c_str(), RTLD_NOW);
if (!handle){
const char* errorString = ::dlerror();
fprintf(stderr, "Failed to load library \"%s\".", path.c_str());
if(errorString) fprintf(stderr, " OS returned error: \"%s\".", errorString);
fprintf(stderr, "\n");
return NULL;
}
#endif
// return a DLibrary with the DLL handle
return new DLibrary(handle);
}
////////////////////////////////////////////////////////////
DLibrary::~DLibrary(){
if (handle){
#ifdef PLUMA_SYS_WINDOWS
::FreeLibrary( (HMODULE)handle );
#else
::dlclose(handle);
#endif
}
}
////////////////////////////////////////////////////////////
void* DLibrary::getSymbol(const std::string& symbol){
if (!handle){
fprintf(stderr, "Cannot inspect library symbols, library isn't loaded.\n");
return NULL;
}
void* res;
#ifdef PLUMA_SYS_WINDOWS
res = (void*)(::GetProcAddress((HMODULE)handle, symbol.c_str()));
#else
res = (void*)(::dlsym(handle, symbol.c_str()));
#endif
if (!res){
fprintf(stderr, "Library symbol \"%s\" not found.\n", symbol.c_str());
return NULL;
}
return res;
}
////////////////////////////////////////////////////////////
DLibrary::DLibrary(void* handle):
handle(handle)
{
// Nothing to do
}
} // namespace pluma
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