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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.
*
* $URL$
* $Id$
*
*/
#include "common/endian.h"
#include "common/savefile.h"
#include "gob/gob.h"
#include "gob/save/saveconverter.h"
#include "gob/save/savefile.h"
#include "gob/save/savehandler.h"
namespace Gob {
SaveConverter_v2::SaveConverter_v2(GobEngine *vm, const Common::String &fileName) :
SaveConverter(vm, fileName) {
}
SaveConverter_v2::~SaveConverter_v2() {
}
int SaveConverter_v2::isOldSave(Common::InSaveFile **save) const {
uint32 varSize = SaveHandler::getVarSize(_vm);
if (varSize == 0)
return 0;
uint32 saveSize = getActualSize(save);
if (saveSize == 0)
return 0;
// The size of the old save always follows that rule
if (saveSize == (varSize * 2 + kSlotNameLength * 2))
return 1;
// Not an old save, clean up
if (save) {
delete *save;
*save = 0;
}
return 0;
}
char *SaveConverter_v2::getDescription(Common::SeekableReadStream &save) const {
char *desc = new char[kSlotNameLength];
// Read the description
if (save.read(desc, kSlotNameLength) != kSlotNameLength) {
delete[] desc;
return 0;
}
return desc;
}
bool SaveConverter_v2::loadFail(SavePartInfo *info, SavePartVars *vars,
Common::InSaveFile *save) {
delete info;
delete vars;
delete save;
clear();
return false;
}
// Loads the old save by constructing a new save containing the old save's data
bool SaveConverter_v2::load() {
clear();
uint32 varSize = SaveHandler::getVarSize(_vm);
if (varSize == 0)
return false;
Common::InSaveFile *save;
// Test if it's an old savd
if (!isOldSave(&save) || !save)
return false;
displayWarning();
SaveWriter writer(2, 0);
SavePartInfo *info = readInfo(*save, kSlotNameLength);
if (!info)
return loadFail(0, 0, save);
SavePartVars *vars = readVars(*save, varSize, true);
if (!vars)
return loadFail(info, 0, save);
// We don't need the save anymore
delete save;
// Write all parts
if (!writer.writePart(0, info))
return loadFail(info, vars, 0);
if (!writer.writePart(1, vars))
return loadFail(info, vars, 0);
// We don't need those anymore
delete info;
delete vars;
// Create the final read stream
if (!createStream(writer))
return loadFail(0, 0, 0);
return true;
}
} // End of namespace Gob
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