svl/source/numbers/numhead.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <tools/debug.hxx>
  21
  22 #include "numhead.hxx"
  23
  24 // ID's for files:
  25 #define SV_NUMID_SIZES                      0x4200
  26
  27 //#pragma SEG_FUNCDEF(numhead_06)
  28
  29 //! Synchronous with Skip()
  30 ImpSvNumMultipleReadHeader::ImpSvNumMultipleReadHeader(SvStream& rNewStream) :
  31     rStream( rNewStream )
  32 {
  33     sal_uInt32 nDataSize;
  34     rStream >> nDataSize;
  35     sal_uLong nDataPos = rStream.Tell();
  36     nEntryEnd = nDataPos;
  37
  38     rStream.SeekRel(nDataSize);
  39     sal_uInt16 nID;
  40     rStream >> nID;
  41     if (nID != SV_NUMID_SIZES)
  42     {
  43         OSL_FAIL("SV_NUMID_SIZES not found");
  44     }
  45     sal_uInt32 nSizeTableLen;
  46     rStream >> nSizeTableLen;
  47     pBuf = new char[nSizeTableLen];
  48     rStream.Read( pBuf, nSizeTableLen );
  49     pMemStream = new SvMemoryStream( pBuf, nSizeTableLen, STREAM_READ );
  50
  51     nEndPos = rStream.Tell();
  52     rStream.Seek( nDataPos );
  53 }
  54
  55 //#pragma SEG_FUNCDEF(numhead_07)
  56
  57 ImpSvNumMultipleReadHeader::~ImpSvNumMultipleReadHeader()
  58 {
  59     DBG_ASSERT( pMemStream->Tell() == pMemStream->GetEndOfData(),
  60                 "Sizes not completely read" );
  61     delete pMemStream;
  62     delete [] pBuf;
  63
  64     rStream.Seek(nEndPos);
  65 }
  66
  67 //#pragma SEG_FUNCDEF(numhead_08)
  68
  69 void ImpSvNumMultipleReadHeader::EndEntry()
  70 {
  71     sal_uLong nPos = rStream.Tell();
  72     DBG_ASSERT( nPos <= nEntryEnd, "Read too much" );
  73     if ( nPos != nEntryEnd )
  74         rStream.Seek( nEntryEnd ); // Skip the rest
  75 }
  76
  77 //#pragma SEG_FUNCDEF(numhead_0d)
  78
  79 void ImpSvNumMultipleReadHeader::StartEntry()
  80 {
  81     sal_uLong nPos = rStream.Tell();
  82     sal_uInt32 nEntrySize;
  83     (*pMemStream) >> nEntrySize;
  84
  85     nEntryEnd = nPos + nEntrySize;
  86 }
  87
  88 //#pragma SEG_FUNCDEF(numhead_09)
  89
  90 sal_uLong ImpSvNumMultipleReadHeader::BytesLeft() const
  91 {
  92     sal_uLong nReadEnd = rStream.Tell();
  93     if (nReadEnd <= nEntryEnd)
  94         return nEntryEnd-nReadEnd;
  95
  96     OSL_FAIL("Error in ImpSvNumMultipleReadHeader::BytesLeft");
  97     return 0;
  98 }
  99
 100
 101 //#pragma SEG_FUNCDEF(numhead_0a)
 102
 103 ImpSvNumMultipleWriteHeader::ImpSvNumMultipleWriteHeader(SvStream& rNewStream,
 104                                                    sal_uLong nDefault) :
 105     rStream( rNewStream ),
 106     aMemStream( 4096, 4096 )
 107 {
 108     nDataSize = nDefault;
 109     rStream << nDataSize;
 110
 111     nDataPos = rStream.Tell();
 112     nEntryStart = nDataPos;
 113 }
 114
 115 //#pragma SEG_FUNCDEF(numhead_0b)
 116
 117 ImpSvNumMultipleWriteHeader::~ImpSvNumMultipleWriteHeader()
 118 {
 119     sal_uLong nDataEnd = rStream.Tell();
 120
 121     rStream << (sal_uInt16) SV_NUMID_SIZES;
 122     rStream << static_cast<sal_uInt32>(aMemStream.Tell());
 123     rStream.Write( aMemStream.GetData(), aMemStream.Tell() );
 124
 125     if ( nDataEnd - nDataPos != nDataSize ) // Hit Default?
 126     {
 127         nDataSize = nDataEnd - nDataPos;
 128         sal_uLong nPos = rStream.Tell();
 129         rStream.Seek(nDataPos-sizeof(sal_uInt32));
 130         rStream << nDataSize; // Add size at the start
 131         rStream.Seek(nPos);
 132     }
 133 }
 134
 135 //#pragma SEG_FUNCDEF(numhead_0c)
 136
 137 void ImpSvNumMultipleWriteHeader::EndEntry()
 138 {
 139     sal_uLong nPos = rStream.Tell();
 140     aMemStream << static_cast<sal_uInt32>(nPos - nEntryStart);
 141 }
 142
 143 //#pragma SEG_FUNCDEF(numhead_0e)
 144
 145 void ImpSvNumMultipleWriteHeader::StartEntry()
 146 {
 147     sal_uLong nPos = rStream.Tell();
 148     nEntryStart = nPos;
 149 }
 150
 151 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */