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/* 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.
*
*/
#include "glk/magnetic/detection.h"
#include "glk/magnetic/detection_tables.h"
#include "common/debug.h"
#include "common/file.h"
#include "common/md5.h"
#include "engines/game.h"
namespace Glk {
namespace Magnetic {
void MagneticMetaEngine::getSupportedGames(PlainGameList &games) {
for (const PlainGameDescriptor *pd = MAGNETIC_GAME_LIST; pd->gameId; ++pd) {
games.push_back(*pd);
}
}
GameDescriptor MagneticMetaEngine::findGame(const char *gameId) {
for (const PlainGameDescriptor *pd = MAGNETIC_GAME_LIST; pd->gameId; ++pd) {
if (!strcmp(gameId, pd->gameId))
return *pd;
}
return PlainGameDescriptor();
}
bool MagneticMetaEngine::detectGames(const Common::FSList &fslist, DetectedGames &gameList) {
const char *const EXTENSIONS[] = { ".mag", ".rsc", nullptr };
// Loop through the files of the folder
for (Common::FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
// Check for a recognised filename
if (file->isDirectory())
continue;
Common::String filename = file->getName();
bool hasExt = false;
for (const char *const *ext = &EXTENSIONS[0]; *ext && !hasExt; ++ext)
hasExt = filename.hasSuffixIgnoreCase(*ext);
if (!hasExt)
continue;
// Open up the file and calculate the md5
Common::File gameFile;
if (!gameFile.open(*file))
continue;
if (gameFile.readUint32BE() != MKTAG('M', 'a', 'S', 'c')) {
gameFile.close();
continue;
}
gameFile.seek(0);
Common::String md5 = Common::computeStreamMD5AsString(gameFile, 5000);
size_t filesize = gameFile.size();
gameFile.close();
// Check for known games
const GlkDetectionEntry *p = MAGNETIC_GAMES;
while (p->_gameId && (md5 != p->_md5 || filesize != p->_filesize))
++p;
if (!p->_gameId) {
const PlainGameDescriptor &desc = MAGNETIC_GAME_LIST[0];
gameList.push_back(GlkDetectedGame(desc.gameId, desc.description, filename, md5, filesize));
} else {
PlainGameDescriptor gameDesc = findGame(p->_gameId);
gameList.push_back(GlkDetectedGame(p->_gameId, gameDesc.description, filename));
}
}
return !gameList.empty();
}
void MagneticMetaEngine::detectClashes(Common::StringMap &map) {
for (const PlainGameDescriptor *pd = MAGNETIC_GAME_LIST; pd->gameId; ++pd) {
if (map.contains(pd->gameId))
error("Duplicate game Id found - %s", pd->gameId);
map[pd->gameId] = "";
}
}
const gms_game_table_t *gms_gameid_lookup_game(uint32 undo_size, uint32 undo_pc) {
const gms_game_table_t *game;
for (game = GMS_GAME_TABLE; game->name; game++) {
if (game->undo_size == undo_size && game->undo_pc == undo_pc)
break;
}
return game->name ? game : nullptr;
}
} // End of namespace Magnetic
} // End of namespace Glk
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