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