sfx2/source/bastyp/mieclip.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 <sal/config.h>
  21
  22 #include <o3tl/safeint.hxx>
  23 #include <tools/stream.hxx>
  24
  25 #include <sfx2/mieclip.hxx>
  26
  27 MSE40HTMLClipFormatObj::~MSE40HTMLClipFormatObj()
  28 {
  29 }
  30
  31 SvStream* MSE40HTMLClipFormatObj::IsValid( SvStream& rStream )
  32 {
  33     bool bRet = false;
  34     pStrm.reset();
  35
  36     OString sLine;
  37     sal_Int32 nStt = -1, nEnd = -1, nFragStart = -1, nFragEnd = -1;
  38     sal_Int32 nIndex = 0;
  39
  40     rStream.Seek(STREAM_SEEK_TO_BEGIN);
  41     rStream.ResetError();
  42
  43     if( rStream.ReadLine( sLine ) &&
  44         sLine.getToken( 0, ':', nIndex ) == "Version" )
  45     {
  46         while( rStream.ReadLine( sLine ) )
  47         {
  48             nIndex = 0;
  49             OString sTmp(sLine.getToken(0, ':', nIndex));
  50             if (sTmp == "StartHTML")
  51                 nStt = sLine.copy(nIndex).toInt32();
  52             else if (sTmp == "EndHTML")
  53                 nEnd = sLine.copy(nIndex).toInt32();
  54             else if (sTmp == "StartFragment")
  55                 nFragStart = sLine.copy(nIndex).toInt32();
  56             else if (sTmp == "EndFragment")
  57                 nFragEnd = sLine.copy(nIndex).toInt32();
  58             else if (sTmp == "SourceURL")
  59                 sBaseURL = OStringToOUString( sLine.subView(nIndex), RTL_TEXTENCODING_UTF8 );
  60
  61             if (nEnd >= 0 && nStt >= 0 &&
  62                 (!sBaseURL.isEmpty() || rStream.Tell() >= o3tl::make_unsigned(nStt)))
  63             {
  64                 bRet = true;
  65                 break;
  66             }
  67         }
  68     }
  69
  70     if( bRet )
  71     {
  72         rStream.Seek( nStt );
  73
  74         pStrm.reset( new SvMemoryStream( ( nEnd - nStt < 0x10000l
  75                                         ? nEnd - nStt + 32
  76                                         : 0 )) );
  77         pStrm->WriteStream( rStream );
  78         pStrm->SetStreamSize( nEnd - nStt + 1 );
  79         pStrm->Seek( STREAM_SEEK_TO_BEGIN );
  80         return pStrm.get();
  81     }
  82
  83     if (nFragStart > 0 && nFragEnd > 0 && nFragEnd > nFragStart)
  84     {
  85         size_t nSize = nFragEnd - nFragStart + 1;
  86         if (nSize < 0x10000L)
  87         {
  88             rStream.Seek(nFragStart);
  89             pStrm.reset( new SvMemoryStream(nSize) );
  90             pStrm->WriteStream( rStream );
  91             pStrm->SetStreamSize(nSize);
  92             pStrm->Seek(STREAM_SEEK_TO_BEGIN);
  93             return pStrm.get();
  94         }
  95     }
  96
  97     return nullptr;
  98 }
  99
 100 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */