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 <tools/stream.hxx>
  21
  22 #include <sot/storage.hxx>
  23 #include <sot/formats.hxx>
  24
  25 #include <sfx2/mieclip.hxx>
  26 #include <sfx2/sfxuno.hxx>
  27
  28 MSE40HTMLClipFormatObj::~MSE40HTMLClipFormatObj()
  29 {
  30     delete pStrm;
  31 }
  32
  33 SvStream* MSE40HTMLClipFormatObj::IsValid( SvStream& rStream )
  34 {
  35     bool bRet = false;
  36     if( pStrm )
  37         delete pStrm, pStrm = 0;
  38
  39     OString sLine, sVersion;
  40     sal_Int32 nStt = -1, nEnd = -1, nFragStart = -1, nFragEnd = -1;
  41     sal_Int32 nIndex = 0;
  42
  43     rStream.Seek(STREAM_SEEK_TO_BEGIN);
  44     rStream.ResetError();
  45
  46     if( rStream.ReadLine( sLine ) &&
  47         sLine.getToken( 0, ':', nIndex ) == "Version" )
  48     {
  49         sVersion = sLine.copy( nIndex );
  50         while( rStream.ReadLine( sLine ) )
  51         {
  52             nIndex = 0;
  53             OString sTmp(sLine.getToken(0, ':', nIndex));
  54             if (sTmp == "StartHTML")
  55                 nStt = sLine.copy(nIndex).toInt32();
  56             else if (sTmp == "EndHTML")
  57                 nEnd = sLine.copy(nIndex).toInt32();
  58             else if (sTmp == "StartFragment")
  59                 nFragStart = sLine.copy(nIndex).toInt32();
  60             else if (sTmp == "EndFragment")
  61                 nFragEnd = sLine.copy(nIndex).toInt32();
  62             else if (sTmp == "SourceURL")
  63                 sBaseURL = OStringToOUString( sLine.copy(nIndex), RTL_TEXTENCODING_UTF8 );
  64
  65             if (nEnd >= 0 && nStt >= 0 &&
  66                 (!sBaseURL.isEmpty() || rStream.Tell() >= static_cast<sal_Size>(nStt)))
  67             {
  68                 bRet = true;
  69                 break;
  70             }
  71         }
  72     }
  73
  74     if( bRet )
  75     {
  76         rStream.Seek( nStt );
  77
  78         pStrm = new SvMemoryStream( ( nEnd - nStt < 0x10000l
  79                                         ? nEnd - nStt + 32
  80                                         : 0 ));
  81         pStrm->WriteStream( rStream );
  82         pStrm->SetStreamSize( nEnd - nStt + 1L );
  83         pStrm->Seek( STREAM_SEEK_TO_BEGIN );
  84         return pStrm;
  85     }
  86
  87     if (nFragStart > 0 && nFragEnd > 0 && nFragEnd > nFragStart)
  88     {
  89         sal_uIntPtr nSize = static_cast<sal_uIntPtr>(nFragEnd - nFragStart + 1);
  90         if (nSize < 0x10000L)
  91         {
  92             rStream.Seek(nFragStart);
  93             pStrm = new SvMemoryStream(nSize);
  94             pStrm->WriteStream( rStream );
  95             pStrm->SetStreamSize(nSize);
  96             pStrm->Seek(STREAM_SEEK_TO_BEGIN);
  97             return pStrm;
  98         }
  99     }
 100
 101     return NULL;
 102 }
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */