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scummvm/backends/plugins/win32/win32-provider.cpp
T

100 lines
2.9 KiB
C++

/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
// Disable symbol overrides so that we can use system headers.
#define FORBIDDEN_SYMBOL_ALLOW_ALL
#include "common/scummsys.h"
#if defined(DYNAMIC_MODULES) && defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <tchar.h>
#include "backends/platform/sdl/win32/win32_wrapper.h"
#include "backends/plugins/win32/win32-provider.h"
#include "backends/plugins/dynamic-plugin.h"
#include "common/debug.h"
#include "common/fs.h"
class Win32Plugin final : public DynamicPlugin {
protected:
void *_dlHandle;
virtual VoidFunc findSymbol(const char *symbol) override {
FARPROC func = GetProcAddress((HMODULE)_dlHandle, symbol);
if (!func)
debug("Failed loading symbol '%s' from plugin '%s'", symbol, _filename.c_str());
return (void (*)())func;
}
public:
Win32Plugin(const Common::String &filename)
: DynamicPlugin(filename), _dlHandle(0) {}
virtual bool loadPlugin() override {
assert(!_dlHandle);
TCHAR *tFilename = Win32::stringToTchar(_filename);
_dlHandle = LoadLibrary(tFilename);
free(tFilename);
if (!_dlHandle) {
debug("Failed loading plugin '%s' (error code %d)", _filename.c_str(), (int32) GetLastError());
return false;
} else {
debug(1, "Success loading plugin '%s', handle %p", _filename.c_str(), _dlHandle);
}
return DynamicPlugin::loadPlugin();
}
virtual void unloadPlugin() override {
DynamicPlugin::unloadPlugin();
if (_dlHandle) {
if (!FreeLibrary((HMODULE)_dlHandle))
debug("Failed unloading plugin '%s'", _filename.c_str());
else
debug(1, "Success unloading plugin '%s'", _filename.c_str());
_dlHandle = 0;
}
}
};
Plugin* Win32PluginProvider::createPlugin(const Common::FSNode &node) const {
return new Win32Plugin(node.getPath());
}
bool Win32PluginProvider::isPluginFilename(const Common::FSNode &node) const {
// Check the plugin suffix
Common::String filename = node.getName();
if (!filename.hasSuffix(".dll"))
return false;
return true;
}
#endif // defined(DYNAMIC_MODULES) && defined(_WIN32)