57ed14b5c5
Change-Id: Ifec23a2e83a4327d954a9978ee3885a1f0889d6a Reviewed-on: https://gerrit.libreoffice.org/c/core/+/115377 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_TOOLS_ZCODEC_HXX
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#define INCLUDED_TOOLS_ZCODEC_HXX
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#include <tools/toolsdllapi.h>
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#include <tools/long.hxx>
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#include <memory>
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#define ZCODEC_NO_COMPRESSION 0
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#define ZCODEC_DEFAULT_COMPRESSION 6
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class SvStream;
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// The overall client call protocol is one of:
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// * BeginCompression, Compress, EndCompression
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// * BeginCompression, Decompress, EndCompression
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// * BeginCompression, Write*, EndCompression
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// * BeginCompression, Read*, EndCompression
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// * BeginCompression, ReadAsynchron*, EndCompression
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class SAL_WARN_UNUSED TOOLS_DLLPUBLIC ZCodec
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{
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enum State { STATE_INIT, STATE_DECOMPRESS, STATE_COMPRESS };
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State meState;
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bool mbStatus;
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bool mbFinish;
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std::unique_ptr<sal_uInt8[]> mpInBuf;
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size_t mnInBufSize;
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size_t mnInToRead;
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SvStream* mpOStm;
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std::unique_ptr<sal_uInt8[]> mpOutBuf;
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size_t mnOutBufSize;
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int mnCompressLevel;
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bool mbGzLib;
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void* mpsC_Stream;
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void InitCompress();
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void InitDecompress(SvStream & inStream);
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void ImplWriteBack();
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public:
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ZCodec( size_t nInBufSize = 32768, size_t nOutBufSize = 32768 );
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~ZCodec();
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void BeginCompression( int nCompressLevel = ZCODEC_DEFAULT_COMPRESSION, bool gzLib = false );
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tools::Long EndCompression();
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void Compress( SvStream& rIStm, SvStream& rOStm );
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tools::Long Decompress( SvStream& rIStm, SvStream& rOStm );
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bool AttemptDecompression( SvStream& rIStm, SvStream& rOStm );
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void Write( SvStream& rOStm, const sal_uInt8* pData, sal_uInt32 nSize );
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tools::Long Read( SvStream& rIStm, sal_uInt8* pData, sal_uInt32 nSize );
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};
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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