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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 TITANIC_COMPRESSED_FILE_H
#define TITANIC_COMPRESSED_FILE_H
#include "common/scummsys.h"
#include "common/file.h"
#include "titanic/compression.h"
#include "titanic/simple_file.h"
#include "titanic/string.h"
namespace Titanic {
enum CompressedFileMode { COMPMODE_NONE, COMPMODE_WRITE, COMPMODE_READ };
/**
* Derived file that handles compressed files
*/
class CompressedFile : public SimpleFile {
private:
Compression _compression;
CompressedFileMode _fileMode;
byte _writeBuffer[516];
byte *_dataStartPtr;
byte *_dataPtr;
int _dataRemaining;
int _dataMaxSize;
int _dataCount;
/**
* Decompress data from the source file
*/
void decompress();
public:
CompressedFile();
virtual ~CompressedFile();
/**
* Open a file for access
*/
virtual void open(const Common::String &name);
/**
* Set up a stream for read access
*/
virtual void open(Common::SeekableReadStream *stream);
/**
* Set up a stream for write access
*/
virtual void open(Common::OutSaveFile *stream);
/**
* Close the file
*/
virtual void close();
/**
* Read from the file
*/
virtual size_t unsafeRead(void *dst, size_t count);
};
} // End of namespace Titanic
#endif /* TITANIC_COMPRESSED_FILE_H */
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