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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 "common/str.h"
#include "common/stream.h"
#include "gob/gob.h"
#include "gob/totfile.h"
#include "gob/dataio.h"
#include "gob/videoplayer.h"
namespace Gob {
TOTFile::TOTFile(GobEngine *vm) : _vm(vm) {
_stream = 0;
memset(_header, 0, 128);
}
TOTFile::~TOTFile() {
unload();
}
bool TOTFile::load(const Common::String &fileName) {
// Trying to open normally
_stream = _vm->_dataIO->getFile(fileName);
if (!_stream)
// Trying to open from video
_stream = _vm->_vidPlayer->getEmbeddedFile(fileName);
if (!_stream)
return false;
if (_stream->read(_header, 128) != 128)
return false;
_stream->seek(0);
return true;
}
void TOTFile::unload() {
delete _stream;
_stream = 0;
}
Common::SeekableReadStream *TOTFile::getStream() const {
return _stream;
}
bool TOTFile::getProperties(Properties &props) const {
if (!_stream)
return false;
// Offset 39-41: Version in "Major.Minor" string form
if (_header[40] != '.')
return false;
props.versionMajor = _header[39] - '0';
props.versionMinor = _header[41] - '0';
props.variablesCount = READ_LE_UINT32(_header + 44);
props.textsOffset = READ_LE_UINT32(_header + 48);
props.resourcesOffset = READ_LE_UINT32(_header + 52);
props.animDataSize = READ_LE_UINT16(_header + 56);
props.imFileNumber = _header[59];
props.exFileNumber = _header[60];
props.communHandling = _header[61];
for (int i = 0; i < 14; i++)
props.functions[i] = READ_LE_UINT16(_header + 100 + i * 2);
uint32 fileSize = _stream->size();
uint32 textsOffset = props.textsOffset;
uint32 resourcesOffset = props.resourcesOffset;
if (textsOffset == 0xFFFFFFFF)
textsOffset = 0;
if (resourcesOffset == 0xFFFFFFFF)
resourcesOffset = 0;
props.scriptEnd = fileSize;
if (textsOffset > 0)
props.scriptEnd = MIN(props.scriptEnd, textsOffset);
if (resourcesOffset > 0)
props.scriptEnd = MIN(props.scriptEnd, resourcesOffset);
// Calculate the sizes of the texts and resources tables for every possible order
if ((textsOffset > 0) && (resourcesOffset > 0)) {
// Both exists
if (props.textsOffset > resourcesOffset) {
// First resources, then texts
props.textsSize = fileSize - textsOffset;
props.resourcesSize = textsOffset - resourcesOffset;
} else {
// First texts, then resources
props.textsSize = resourcesOffset - textsOffset;
props.resourcesSize = fileSize - resourcesOffset;
}
} else if (textsOffset > 0) {
// Only the texts table exists
props.textsSize = fileSize - textsOffset;
props.resourcesSize = 0;
} else if (resourcesOffset > 0) {
// Only the resources table exists
props.textsSize = 0;
props.resourcesSize = fileSize - resourcesOffset;
} else {
// Both don't exists
props.textsSize = 0;
props.resourcesSize = 0;
}
return true;
}
Common::String TOTFile::createFileName(const Common::String &base, bool &isLOM) {
isLOM = false;
const char *dot;
if ((dot = strrchr(base.c_str(), '.'))) {
// fileName includes an extension
if (!scumm_stricmp(dot + 1, "LOM"))
isLOM = true;
return base;
}
return base + ".tot";
}
Common::String TOTFile::getFileBase(const Common::String &fileName) {
const char *dot;
if ((dot = strrchr(fileName.c_str(), '.'))) {
// fileName includes an extension
return Common::String(fileName.c_str(), dot);
}
return fileName;
}
} // End of namespace Gob
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