/* -*- 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 #define ZCODEC_NO_COMPRESSION 0 #define ZCODEC_DEFAULT_COMPRESSION 6 class SvStream; // The overall client call protocol is one of: // * BeginCompression, Compress, EndCompression // * BeginCompression, Decompress, EndCompression // * BeginCompression, Write*, EndCompression // * BeginCompression, Read*, EndCompression // * BeginCompression, ReadAsynchron*, EndCompression class SAL_WARN_UNUSED TOOLS_DLLPUBLIC ZCodec { enum State { STATE_INIT, STATE_DECOMPRESS, STATE_COMPRESS }; State meState; bool mbStatus; bool mbFinish; sal_uInt8* mpInBuf; size_t mnInBufSize; size_t mnInToRead; SvStream* mpOStm; sal_uInt8* mpOutBuf; size_t mnOutBufSize; sal_uInt32 mnCRC; int mnCompressLevel; bool mbUpdateCrc; bool mbGzLib; void* mpsC_Stream; void InitCompress(); void InitDecompress(SvStream & inStream); void ImplWriteBack(); void UpdateCRC( sal_uInt8 const * pSource, long nDatSize ); public: ZCodec( sal_uIntPtr nInBuf = 0x8000UL, sal_uIntPtr nOutBuf = 0x8000UL ); ~ZCodec(); void BeginCompression( int nCompressLevel = ZCODEC_DEFAULT_COMPRESSION, bool updateCrc = false, bool gzLib = false ); long EndCompression(); void Compress( SvStream& rIStm, SvStream& rOStm ); long Decompress( SvStream& rIStm, SvStream& rOStm ); bool AttemptDecompression( SvStream& rIStm, SvStream& rOStm ); void Write( SvStream& rOStm, const sal_uInt8* pData, sal_uInt32 nSize ); long Read( SvStream& rIStm, sal_uInt8* pData, sal_uInt32 nSize ); long ReadAsynchron( SvStream& rIStm, sal_uInt8* pData, sal_uInt32 nSize ); void SetBreak( size_t ); size_t GetBreak() const; void SetCRC( sal_uInt32 nCurrentCRC ); sal_uInt32 GetCRC() const { return mnCRC;} }; #endif /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ on value='distro/collabora/co-24.04.8'>distro/collabora/co-24.04.8 LibreOffice 核心代码仓库文档基金会

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