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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.
*
*/
#ifndef DRACI_BARCHIVE_H
#define DRACI_BARCHIVE_H
#include "common/str.h"
#include "common/file.h"
namespace Draci {
/**
* Represents individual files inside the archive.
*/
struct BAFile {
uint _compLength; ///< Compressed length (the same as _length if the file is uncompressed)
uint _length; ///< Uncompressed length
uint32 _offset; ///< Offset of file inside archive
byte *_data;
byte _crc;
byte _stopper; ///< Not used in BAR files, needed for DFW
/** Releases the file data (for memory considerations) */
void close() {
delete[] _data;
_data = NULL;
}
};
class BArchive {
public:
BArchive() : _files(NULL), _fileCount(0), _opened(false) {}
BArchive(const Common::String &path) :
_files(NULL), _fileCount(0), _opened(false) {
openArchive(path);
}
~BArchive() { closeArchive(); }
void openArchive(const Common::String &path);
void closeArchive();
uint size() const { return _fileCount; }
/**
* Checks whether there is an archive opened. Should be called before reading
* from the archive to check whether openArchive() succeeded.
*/
bool isOpen() const { return _opened; }
void clearCache();
const BAFile *getFile(uint i);
private:
// Archive header data
static const char _magicNumber[];
static const char _dfwMagicNumber[];
static const uint _archiveHeaderSize = 10;
// File stream header data
static const uint _fileHeaderSize = 6;
Common::String _path; ///< Path to file
BAFile *_files; ///< Internal array of files
uint _fileCount; ///< Number of files in archive
bool _isDFW; ///< True if the archive is in DFW format, false otherwise
bool _opened; ///< True if the archive is opened, false otherwise
Common::File _f; ///< Opened file handle
void openDFW(const Common::String &path);
BAFile *loadFileDFW(uint i);
BAFile *loadFileBAR(uint i);
};
} // End of namespace Draci
#endif // DRACI_BARCHIVE_H
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