mirror of
https://github.com/libretro/scummvm.git
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136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/endian.h"
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#include "common/savefile.h"
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#include "gob/gob.h"
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#include "gob/save/saveconverter.h"
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#include "gob/save/savefile.h"
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#include "gob/save/savehandler.h"
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namespace Gob {
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SaveConverter_v6::SaveConverter_v6(GobEngine *vm, const Common::String &fileName) :
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SaveConverter(vm, fileName) {
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}
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SaveConverter_v6::~SaveConverter_v6() {
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}
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int SaveConverter_v6::isOldSave(Common::InSaveFile **save) const {
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uint32 varSize = SaveHandler::getVarSize(_vm);
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if (varSize == 0)
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return 0;
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uint32 saveSize = getActualSize(save);
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if (saveSize == 0)
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return 0;
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// The size of the old save always follows that rule
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if (saveSize == (varSize * 2 + kSlotNameLength * 2))
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return 1;
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// Not an old save, clean up
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if (save) {
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delete *save;
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*save = 0;
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}
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return 0;
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}
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char *SaveConverter_v6::getDescription(Common::SeekableReadStream &save) const {
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char *desc = new char[kSlotNameLength];
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// Read the description
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if (save.read(desc, kSlotNameLength) != kSlotNameLength) {
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delete[] desc;
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return 0;
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}
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return desc;
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}
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bool SaveConverter_v6::loadFail(SavePartInfo *info, SavePartVars *vars,
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Common::InSaveFile *save) {
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delete info;
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delete vars;
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delete save;
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clear();
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return false;
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}
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// Loads the old save by constructing a new save containing the old save's data
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bool SaveConverter_v6::load() {
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clear();
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uint32 varSize = SaveHandler::getVarSize(_vm);
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if (varSize == 0)
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return false;
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Common::InSaveFile *save;
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// Test if it's an old savd
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if (!isOldSave(&save) || !save)
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return false;
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displayWarning();
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SaveWriter writer(2, 0);
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SavePartInfo *info = readInfo(*save, kSlotNameLength);
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if (!info)
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return loadFail(0, 0, save);
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SavePartVars *vars = readVars(*save, varSize, true);
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if (!vars)
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return loadFail(info, 0, save);
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// We don't need the save anymore
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delete save;
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// Write all parts
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if (!writer.writePart(0, info))
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return loadFail(info, vars, 0);
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if (!writer.writePart(1, vars))
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return loadFail(info, vars, 0);
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// We don't need those anymore
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delete info;
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delete vars;
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// Create the final read stream
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if (!createStream(writer))
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return loadFail(0, 0, 0);
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return true;
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}
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} // End of namespace Gob
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