svtools/source/urlobj/inetimg.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 <sot/formats.hxx>
  21 #include <tools/stream.hxx>
  22
  23 #include <svtools/inetimg.hxx>
  24
  25 #define TOKEN_SEPARATOR '\001'
  26
  27 sal_Bool INetImage::Write( SvStream& rOStm, sal_uLong nFormat ) const
  28 {
  29     sal_Bool bRet = sal_False;
  30     switch( nFormat )
  31     {
  32     case SOT_FORMATSTR_ID_INET_IMAGE:
  33         {
  34             String sString;
  35             (sString += aImageURL ) += TOKEN_SEPARATOR;
  36             (sString += aTargetURL ) += TOKEN_SEPARATOR;
  37             (sString += aTargetFrame ) += TOKEN_SEPARATOR;
  38             (sString += aAlternateText ) += TOKEN_SEPARATOR;
  39             sString += OUString::number( aSizePixel.Width() );
  40             sString += TOKEN_SEPARATOR;
  41             sString += OUString::number( aSizePixel.Height() );
  42
  43             OString sOut(OUStringToOString(sString,
  44                 RTL_TEXTENCODING_UTF8));
  45
  46             rOStm.Write(sOut.getStr(), sOut.getLength());
  47             static const sal_Char aEndChar[2] = { 0 };
  48             rOStm.Write( aEndChar, sizeof( aEndChar ));
  49             bRet = 0 == rOStm.GetError();
  50         }
  51         break;
  52
  53     case SOT_FORMATSTR_ID_NETSCAPE_IMAGE:
  54         break;
  55     }
  56     return bRet;
  57 }
  58
  59 sal_Bool INetImage::Read( SvStream& rIStm, sal_uLong nFormat )
  60 {
  61     sal_Bool bRet = sal_False;
  62     switch( nFormat )
  63     {
  64     case SOT_FORMATSTR_ID_INET_IMAGE:
  65         {
  66             String sINetImg = read_zeroTerminated_uInt8s_ToOUString(rIStm, RTL_TEXTENCODING_UTF8);
  67             sal_Int32 nStart = 0;
  68             aImageURL = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
  69             aTargetURL = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
  70             aTargetFrame = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
  71             aAlternateText = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
  72             aSizePixel.Width() = sINetImg.GetToken( 0, TOKEN_SEPARATOR,
  73                                                     nStart ).ToInt32();
  74             aSizePixel.Height() = sINetImg.GetToken( 0, TOKEN_SEPARATOR,
  75                                                     nStart ).ToInt32();
  76             bRet = 0 != sINetImg.Len();
  77         }
  78         break;
  79
  80     case SOT_FORMATSTR_ID_NETSCAPE_IMAGE:
  81         {
  82 /*
  83     --> structure size  MUST - alignment of 4!
  84     int     iSize;              // size of all data, including variable length strings
  85     sal_Bool    bIsMap;             // For server side maps
  86     sal_Int32   iWidth;             // Fixed size data correspond to fields in LO_ImageDataStruct
  87     sal_Int32   iHeight;            //   and EDT_ImageData
  88     sal_Int32   iHSpace;
  89     sal_Int32   iVSpace;
  90     sal_Int32   iBorder;
  91     int     iLowResOffset;      // Offsets into string_data. If 0, string is NULL (not used)
  92     int     iAltOffset;         // (alternate text?)
  93     int     iAnchorOffset;      // HREF in image
  94     int     iExtraHTML_Offset;  // Extra HTML (stored in CImageElement)
  95     sal_Char pImageURL[1];      // Append all variable-length strings starting here
  96 */
  97             rtl_TextEncoding eSysCSet = osl_getThreadTextEncoding();
  98             sal_Int32 nVal, nAnchorOffset, nAltOffset, nFilePos;
  99
 100             nFilePos = rIStm.Tell();
 101             // skip over iSize (int), bIsMao ( sal_Bool ) alignment of 4 !!!!
 102             rIStm.SeekRel( 8 );
 103             rIStm >> nVal;  aSizePixel.Width() = nVal;
 104             rIStm >> nVal;  aSizePixel.Height() = nVal;
 105             // skip over iHSpace, iVSpace, iBorder, iLowResOffset
 106             rIStm.SeekRel( 3 * sizeof( sal_Int32 ) + sizeof( int ) );
 107             rIStm >> nAltOffset;
 108             rIStm >> nAnchorOffset;
 109             // skip over iExtraHTML_Offset
 110             rIStm.SeekRel( sizeof( int ) );
 111
 112             aImageURL = read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
 113             if( nAltOffset )
 114             {
 115                 rIStm.Seek( nFilePos + nAltOffset );
 116                 aAlternateText = read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
 117             }
 118             else if( aAlternateText.Len() )
 119                 aAlternateText.Erase();
 120
 121             if( nAnchorOffset )
 122             {
 123                 rIStm.Seek( nFilePos + nAnchorOffset );
 124                 aTargetURL = read_zeroTerminated_uInt8s_ToOUString(rIStm, eSysCSet);
 125             }
 126             else if( aTargetURL.Len() )
 127                 aTargetURL.Erase();
 128
 129             bRet = 0 == rIStm.GetError();
 130         }
 131         break;
 132     }
 133     return bRet;
 134 }
 135
 136 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */