database.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 DATABASE_H
#define DATABASE_H

#include "common/hash-str.h"
#include "common/hashmap.h"
#include "common/scummsys.h"
#include "common/str.h"
#include "common/stream.h"

namespace AGDS {

class Database {
private:
    struct Entry {
        uint32 offset;
        uint32 size;

        Entry() : offset(), size() {}
        Entry(uint32 o, uint32 s) : offset(o), size(s) {}
    };

    using EntriesType = Common::HashMap<Common::String, Entry>;

    Common::String _filename;
    bool _writeable;
    uint32 _totalEntries;
    uint32 _usedEntries;
    uint32 _maxNameSize;

    EntriesType _entries;

private:
    static uint32 getDataOffset(uint32 maxNameSize, uint32 totalEntries);

public:
    bool open(const Common::String &filename);
    bool open(const Common::String &filename, Common::SeekableReadStream &stream);
    Common::Array<Common::String> getEntries() const;

    Common::SeekableReadStream *getEntry(const Common::String &name) const;
    Common::SeekableReadStream *getEntry(Common::SeekableReadStream &parent, const Common::String &name) const;

    static void write(Common::WriteStream &stream, const Common::HashMap<Common::String, Common::Array<uint8>> &entries);
};

} // End of namespace AGDS

#endif /* AGDS_DATABASE_H */