barchive.h

/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef DRACI_BARCHIVE_H
#define DRACI_BARCHIVE_H
 
#include "common/str.h"
#include "common/file.h"
 
namespace Draci {
 
struct BAFile {
    uint _compLength; 
    uint _length;     
    uint32 _offset;   
    byte *_data;
    byte _crc;
    byte _stopper;    
 
    void close() {
        delete[] _data;
        _data = NULL;
    }
};
 
class BArchive {
public:
    BArchive() : _files(NULL), _fileCount(0), _opened(false) {}
 
    BArchive(const Common::Path &path) :
    _files(NULL), _fileCount(0), _opened(false) {
        openArchive(path);
    }
 
    ~BArchive() { closeArchive(); }
 
    void openArchive(const Common::Path &path);
    void closeArchive();
    uint size() const { return _fileCount; }
 
    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::Path _path;    
    BAFile *_files;          
    uint _fileCount;         
    bool _isDFW;             
    bool _opened;            
    Common::File _f;         
 
    void openDFW(const Common::Path &path);
    BAFile *loadFileDFW(uint i);
    BAFile *loadFileBAR(uint i);
};
 
} // End of namespace Draci
 
#endif // DRACI_BARCHIVE_H