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 #include <tools/cachestr.hxx>
  22
  23 #include <sot/storage.hxx>
  24 #include <sot/formats.hxx>
  25
  26 #include <sfx2/mieclip.hxx>
  27 #include <sfx2/sfxuno.hxx>
  28
  29 MSE40HTMLClipFormatObj::~MSE40HTMLClipFormatObj()
  30 {
  31     delete pStrm;
  32 }
  33
  34 SvStream* MSE40HTMLClipFormatObj::IsValid( SvStream& rStream )
  35 {
  36     bool bRet = false;
  37     if( pStrm )
  38         delete pStrm, pStrm = 0;
  39
  40     OString sLine, sVersion;
  41     sal_Int32 nStt = -1, nEnd = -1, nFragStart = -1, nFragEnd = -1;
  42     sal_Int32 nIndex = 0;
  43
  44     rStream.Seek(STREAM_SEEK_TO_BEGIN);
  45     rStream.ResetError();
  46
  47     if( rStream.ReadLine( sLine ) &&
  48         sLine.getToken( 0, ':', nIndex ) == "Version" )
  49     {
  50         sVersion = sLine.copy( nIndex );
  51         while( rStream.ReadLine( sLine ) )
  52         {
  53             nIndex = 0;
  54             OString sTmp(sLine.getToken(0, ':', nIndex));
  55             if (sTmp.equalsL(RTL_CONSTASCII_STRINGPARAM("StartHTML")))
  56                 nStt = sLine.copy(nIndex).toInt32();
  57             else if (sTmp.equalsL(RTL_CONSTASCII_STRINGPARAM("EndHTML")))
  58                 nEnd = sLine.copy(nIndex).toInt32();
  59             else if (sTmp.equalsL(RTL_CONSTASCII_STRINGPARAM("StartFragment")))
  60                 nFragStart = sLine.copy(nIndex).toInt32();
  61             else if (sTmp.equalsL(RTL_CONSTASCII_STRINGPARAM("EndFragment")))
  62                 nFragEnd = sLine.copy(nIndex).toInt32();
  63             else if (sTmp.equalsL(RTL_CONSTASCII_STRINGPARAM("SourceURL")))
  64                 sBaseURL = S2U(sLine.copy(nIndex));
  65
  66             if (nEnd >= 0 && nStt >= 0 &&
  67                 (sBaseURL.Len() || rStream.Tell() >= static_cast<sal_Size>(nStt)))
  68             {
  69                 bRet = true;
  70                 break;
  71             }
  72         }
  73     }
  74
  75     if( bRet )
  76     {
  77         rStream.Seek( nStt );
  78
  79         pStrm = new SvCacheStream( ( nEnd - nStt < 0x10000l
  80                                         ? nEnd - nStt + 32
  81                                         : 0 ));
  82         *pStrm << rStream;
  83         pStrm->SetStreamSize( nEnd - nStt + 1L );
  84         pStrm->Seek( STREAM_SEEK_TO_BEGIN );
  85         return pStrm;
  86     }
  87
  88     if (nFragStart > 0 && nFragEnd > 0 && nFragEnd > nFragStart)
  89     {
  90         sal_uIntPtr nSize = static_cast<sal_uIntPtr>(nFragEnd - nFragStart + 1);
  91         if (nSize < 0x10000L)
  92         {
  93             rStream.Seek(nFragStart);
  94             pStrm = new SvCacheStream(nSize);
  95             *pStrm << rStream;
  96             pStrm->SetStreamSize(nSize);
  97             pStrm->Seek(STREAM_SEEK_TO_BEGIN);
  98             return pStrm;
  99         }
 100     }
 101
 102     return NULL;
 103 }
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */