mirror of
https://github.com/scummvm/scummvm.git
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154 lines
3.6 KiB
C++
154 lines
3.6 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* This file is based on WME Lite.
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* http://dead-code.org/redir.php?target=wmelite
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* Copyright (c) 2011 Jan Nedoma
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*/
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#include "engines/wintermute/base/base_persistence_manager.h"
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#include "engines/wintermute/base/file/base_save_thumb_file.h"
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namespace Wintermute {
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////////
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BaseSaveThumbFile::BaseSaveThumbFile() {
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_data = nullptr;
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}
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//////////////////////////////////////////////////////////////////////////
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BaseSaveThumbFile::~BaseSaveThumbFile() {
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close();
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}
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//////////////////////////////////////////////////////////////////////////
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bool BaseSaveThumbFile::open(const Common::String &filename) {
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close();
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if (scumm_strnicmp(filename.c_str(), "savegame:", 9) != 0) {
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return STATUS_FAILED;
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}
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char *tempFilename = new char[strlen(filename.c_str()) - 8];
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strcpy(tempFilename, filename.c_str() + 9);
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for (uint32 i = 0; i < strlen(tempFilename); i++) {
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if (tempFilename[i] < '0' || tempFilename[i] > '9') {
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tempFilename[i] = '\0';
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break;
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}
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}
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// get slot number from name
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int slot = atoi(tempFilename);
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delete[] tempFilename;
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BasePersistenceManager *pm = new BasePersistenceManager();
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if (!pm) {
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return STATUS_FAILED;
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}
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Common::String slotFilename = pm->getFilenameForSlot(slot);
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if (DID_FAIL(pm->initLoad(slotFilename))) {
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delete pm;
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return STATUS_FAILED;
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}
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bool res;
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if (pm->_thumbnailDataSize != 0) {
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_data = new byte[pm->_thumbnailDataSize];
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memcpy(_data, pm->_thumbnailData, pm->_thumbnailDataSize);
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_size = pm->_thumbnailDataSize;
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res = STATUS_OK;
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} else {
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res = STATUS_FAILED;
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}
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delete pm;
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return res;
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}
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//////////////////////////////////////////////////////////////////////////
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bool BaseSaveThumbFile::close() {
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delete[] _data;
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_data = nullptr;
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_pos = 0;
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_size = 0;
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return STATUS_OK;
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}
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//////////////////////////////////////////////////////////////////////////
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bool BaseSaveThumbFile::read(void *buffer, uint32 size) {
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if (!_data || _pos + size > _size) {
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return STATUS_FAILED;
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}
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memcpy(buffer, (byte *)_data + _pos, size);
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_pos += size;
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return STATUS_OK;
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}
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//////////////////////////////////////////////////////////////////////////
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bool BaseSaveThumbFile::seek(uint32 pos, int whence) {
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if (!_data) {
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return STATUS_FAILED;
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}
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uint32 newPos = 0;
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switch (whence) {
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case SEEK_SET:
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default:
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newPos = pos;
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break;
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case SEEK_END:
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newPos = _size + pos;
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break;
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case SEEK_CUR:
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newPos = _pos + pos;
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break;
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}
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if (newPos > _size) {
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return STATUS_FAILED;
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} else {
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_pos = newPos;
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}
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return STATUS_OK;
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}
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} // End of namespace Wintermute
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