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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.
*
*/
/*
* This file is based on WME Lite.
* http://dead-code.org/redir.php?target=wmelite
* Copyright (c) 2011 Jan Nedoma
*/
#include "engines/wintermute/base/base_persistence_manager.h"
#include "engines/wintermute/base/file/base_save_thumb_file.h"
namespace Wintermute {
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
BaseSaveThumbFile::BaseSaveThumbFile() {
_data = nullptr;
}
//////////////////////////////////////////////////////////////////////////
BaseSaveThumbFile::~BaseSaveThumbFile() {
close();
}
//////////////////////////////////////////////////////////////////////////
bool BaseSaveThumbFile::open(const Common::String &filename) {
close();
if (scumm_strnicmp(filename.c_str(), "savegame:", 9) != 0) {
return STATUS_FAILED;
}
char *tempFilename = new char[strlen(filename.c_str()) - 8];
strcpy(tempFilename, filename.c_str() + 9);
for (uint32 i = 0; i < strlen(tempFilename); i++) {
if (tempFilename[i] < '0' || tempFilename[i] > '9') {
tempFilename[i] = '\0';
break;
}
}
// get slot number from name
int slot = atoi(tempFilename);
delete[] tempFilename;
BasePersistenceManager *pm = new BasePersistenceManager();
Common::String slotFilename = pm->getFilenameForSlot(slot);
if (!pm) {
return STATUS_FAILED;
}
if (DID_FAIL(pm->initLoad(slotFilename))) {
delete pm;
return STATUS_FAILED;
}
bool res;
if (pm->_thumbnailDataSize != 0) {
_data = new byte[pm->_thumbnailDataSize];
memcpy(_data, pm->_thumbnailData, pm->_thumbnailDataSize);
_size = pm->_thumbnailDataSize;
res = STATUS_OK;
} else {
res = STATUS_FAILED;
}
delete pm;
return res;
}
//////////////////////////////////////////////////////////////////////////
bool BaseSaveThumbFile::close() {
delete[] _data;
_data = nullptr;
_pos = 0;
_size = 0;
return STATUS_OK;
}
//////////////////////////////////////////////////////////////////////////
bool BaseSaveThumbFile::read(void *buffer, uint32 size) {
if (!_data || _pos + size > _size) {
return STATUS_FAILED;
}
memcpy(buffer, (byte *)_data + _pos, size);
_pos += size;
return STATUS_OK;
}
//////////////////////////////////////////////////////////////////////////
bool BaseSaveThumbFile::seek(uint32 pos, int whence) {
if (!_data) {
return STATUS_FAILED;
}
uint32 newPos = 0;
switch (whence) {
case SEEK_SET:
newPos = pos;
break;
case SEEK_END:
newPos = _size + pos;
break;
case SEEK_CUR:
newPos = _pos + pos;
break;
}
if (newPos > _size) {
return STATUS_FAILED;
} else {
_pos = newPos;
}
return STATUS_OK;
}
} // End of namespace Wintermute
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