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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_TOOLS_ZCODEC_HXX
#define INCLUDED_TOOLS_ZCODEC_HXX
#include <tools/toolsdllapi.h>
#define ZCODEC_NO_COMPRESSION 0
#define ZCODEC_DEFAULT_COMPRESSION 6
class SvStream;
class TOOLS_DLLPUBLIC ZCodec
{
private:
sal_uIntPtr mbInit;
bool mbStatus;
bool mbFinish;
SvStream* mpIStm;
sal_uInt8* mpInBuf;
sal_uIntPtr mnInBufSize;
sal_uIntPtr mnInToRead;
SvStream* mpOStm;
sal_uInt8* mpOutBuf;
sal_uIntPtr mnOutBufSize;
sal_uIntPtr mnCRC;
int mnCompressLevel;
bool mbUpdateCrc;
bool mbGzLib;
void* mpsC_Stream;
void ImplInitBuf( bool nIOFlag );
void ImplWriteBack();
public:
ZCodec( sal_uIntPtr nInBuf = 0x8000UL, sal_uIntPtr nOutBuf = 0x8000UL );
virtual ~ZCodec();
virtual void BeginCompression( int nCompressLevel = ZCODEC_DEFAULT_COMPRESSION, bool updateCrc = false, bool gzLib = false );
virtual long EndCompression();
bool IsFinished () const { return mbFinish; }
long Compress( SvStream& rIStm, SvStream& rOStm );
long Decompress( SvStream& rIStm, SvStream& rOStm );
long Write( SvStream& rOStm, const sal_uInt8* pData, sal_uIntPtr nSize );
long Read( SvStream& rIStm, sal_uInt8* pData, sal_uIntPtr nSize );
long ReadAsynchron( SvStream& rIStm, sal_uInt8* pData, sal_uIntPtr nSize );
void SetBreak( sal_uIntPtr );
sal_uIntPtr GetBreak();
void SetCRC( sal_uIntPtr nCurrentCRC );
sal_uIntPtr UpdateCRC( sal_uIntPtr nLatestCRC, sal_uInt8* pSource, long nDatSize );
sal_uIntPtr GetCRC();
};
class GZCodec : public ZCodec
{
public:
GZCodec(){};
virtual ~GZCodec(){};
virtual void BeginCompression( int nCompressLevel = ZCODEC_DEFAULT_COMPRESSION, bool updateCrc = false, bool gzLib = true ) SAL_OVERRIDE
{
ZCodec::BeginCompression( nCompressLevel, updateCrc, gzLib );
};
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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