77 lines
1.6 KiB
C++
Executable File
77 lines
1.6 KiB
C++
Executable File
/*
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* This file is a part of Winix
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* and is not publicly distributed
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*
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* Copyright (c) 2008-2014, Tomasz Sowa
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* All rights reserved.
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*
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*/
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#ifndef headerfile_winix_core_compress
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#define headerfile_winix_core_compress
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#include <cstring>
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#include <zlib.h>
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#include "requesttypes.h"
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namespace Winix
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{
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class Compress
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{
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public:
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Compress();
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~Compress();
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int Init(int compress_level_ = 6);
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/*
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encoding:
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0 - raw deflate data with no zlib header or trailer, and will not compute an adler32 check value
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(for Internet Explorer)
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1 - deflate
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2 - gzip
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*/
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int Compressing(const char * source, size_t source_len, BinaryPage & out_stream, int encoding = 2);
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int Compressing(const BinaryPage & in, BinaryPage & out, int encoding = 2);
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private:
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bool AllocateMemory();
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bool InitRawDeflate();
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bool InitDeflate();
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bool InitGzip();
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int MakeCompress(z_stream & strm, const char * source, size_t source_len, BinaryPage & out_stream, int encoding);
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int MakeCompress(z_stream & strm, const BinaryPage & page, BinaryPage & out, int encoding);
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z_stream * SelectStream(int encoding);
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void ResetStream(z_stream * pstrm, int encoding);
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void PutLog(size_t source_len, int encoding);
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void CopyToInputBuffer(BinaryPage::const_iterator & i, size_t len);
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int compress_level;
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size_t buffer_max_len;
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// size of the last compressed page
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size_t last_out_size;
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char * buffer_in;
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char * buffer_out;
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z_stream strm_raw_deflate, strm_deflate, strm_gzip;
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bool raw_deflate_inited, deflate_inited, gzip_inited;
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bool ready_for_compress;
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};
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} // namespace Winix
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#endif
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