lotuswordpro/inc/lwpobjstrm.hxx

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  10  *  Sun Microsystems Inc., October, 2000
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  12  *  GNU Lesser General Public License Version 2.1
  13  *  =============================================
  14  *  Copyright 2000 by Sun Microsystems, Inc.
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  17  *  This library is free software; you can redistribute it and/or
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  32  *  Sun Industry Standards Source License Version 1.1
  33  *  =================================================
  34  *  The contents of this file are subject to the Sun Industry Standards
  35  *  Source License Version 1.1 (the "License"); You may not use this file
  36  *  except in compliance with the License. You may obtain a copy of the
  37  *  License at http://www.openoffice.org/license.html.
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  39  *  Software provided under this License is provided on an "AS IS" basis,
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  46  *  The Initial Developer of the Original Code is: IBM Corporation
  47  *
  48  *  Copyright: 2008 by IBM Corporation
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  50  *  All Rights Reserved.
  51  *
  52  *  Contributor(s): _______________________________________
  53  *
  54  *
  55  ************************************************************************/
  56 /*************************************************************************
  57  * @file
  58  *  object stream header file
  59  *  stream for one LwpObject body data
  60  ************************************************************************/
  61
  62 #ifndef INCLUDED_LOTUSWORDPRO_INC_LWPOBJSTRM_HXX
  63 #define INCLUDED_LOTUSWORDPRO_INC_LWPOBJSTRM_HXX
  64
  65 #include <config_lgpl.h>
  66
  67 #include <rtl/ustring.hxx>
  68 #include <vector>
  69
  70 #include "lwpsvstream.hxx"
  71
  72 /**
  73  * @brief   stream class for LwpObject body data
  74  *          provide stream like interface to read object data
  75 */
  76 class LwpObjectStream
  77 {
  78 public:
  79     LwpObjectStream(LwpSvStream* pStrm, bool isCompressed, sal_uInt16 size);
  80     ~LwpObjectStream();
  81
  82 private:
  83     sal_uInt8* m_pContentBuf; //The content buffer of the object
  84     sal_uInt8 m_SmallBuffer[100]; //To avoid frequent new
  85     std::vector<sal_uInt8> m_BigBuffer; //otherwise use this
  86     enum
  87     {
  88         IO_BUFFERSIZE = 0xFF00 //Refer to LWP, not sure if it is enough
  89     };
  90     sal_uInt16 m_nBufSize; //The total size of m_pContentBuf
  91     sal_uInt16 m_nReadPos; //The position of the quick read
  92     LwpSvStream* m_pStrm;
  93     bool m_bCompressed;
  94
  95 public:
  96     sal_uInt16 remainingSize() const;
  97     sal_uInt16 QuickRead(void* buf, sal_uInt16 len);
  98     sal_uInt16 GetPos() const { return m_nReadPos; }
  99     void SeekRel(sal_uInt16 pos);
 100     void Seek(sal_uInt16 pos);
 101     void SkipExtra();
 102     sal_uInt16 CheckExtra();
 103
 104     bool QuickReadBool();
 105     sal_uInt32 QuickReaduInt32(bool* pFailure = nullptr);
 106     sal_uInt16 QuickReaduInt16(bool* pFailure = nullptr);
 107     sal_uInt8 QuickReaduInt8(bool* pFailure = nullptr);
 108     sal_Int32 QuickReadInt32();
 109     sal_Int16 QuickReadInt16();
 110     double QuickReadDouble();
 111
 112     OUString QuickReadStringPtr();
 113
 114     void ReadComplete();
 115     LwpSvStream* GetStream();
 116
 117 private:
 118     void Read2Buffer();
 119     sal_uInt8* AllocBuffer(sal_uInt16 size);
 120     static sal_uInt16 DecompressBuffer(sal_uInt8* pDst, sal_uInt8* pSrc, sal_uInt16 Size);
 121     void ReleaseBuffer();
 122 };
 123
 124 inline LwpSvStream* LwpObjectStream::GetStream() { return m_pStrm; }
 125 #endif
 126
 127 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */