gzipinputstream.h

lucene in java大家一定听说过了

/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Jos van den Oever
* 
* Distributable under the terms of either the Apache License (Version 2.0) or 
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef GZIPINPUTSTREAM_H
#define GZIPINPUTSTREAM_H

#include "bufferedstream.h"

struct z_stream_s;

namespace jstreams {

class GZipInputStream : public BufferedInputStream<char> {
private:
    z_stream_s* zstream;
    StreamBase<char>* input;

    void dealloc();
    void readFromStream();
    void decompressFromStream();
    bool checkMagic();
public:
    enum ZipFormat { ZLIBFORMAT, GZIPFORMAT, ZIPFORMAT};
    GZipInputStream(StreamBase<char>* input, ZipFormat format=GZIPFORMAT);
    ~GZipInputStream();
    int32_t fillBuffer(char* start, int32_t space);
};

} // end namespace jstreams

#endif