xref: /trunk/main/svtools/source/urlobj/inetimg.cxx (revision 5900e8ec)
1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_svtools.hxx"
26 #include <tools/debug.hxx>
27 #include <sot/formats.hxx>
28 #include <tools/stream.hxx>
29 
30 #include <svtools/inetimg.hxx>
31 
32 #define TOKEN_SEPARATOR '\001'
33 
Write(SvStream & rOStm,sal_uLong nFormat) const34 sal_Bool INetImage::Write( SvStream& rOStm, sal_uLong nFormat ) const
35 {
36 	sal_Bool bRet = sal_False;
37 	switch( nFormat )
38 	{
39 	case SOT_FORMATSTR_ID_INET_IMAGE:
40 		{
41 			String sString;
42 			(sString += aImageURL ) += TOKEN_SEPARATOR;
43 			(sString += aTargetURL ) += TOKEN_SEPARATOR;
44 			(sString += aTargetFrame ) += TOKEN_SEPARATOR;
45 			(sString += aAlternateText ) += TOKEN_SEPARATOR;
46 			sString += String::CreateFromInt32( aSizePixel.Width() );
47 			sString += TOKEN_SEPARATOR;
48 			sString += String::CreateFromInt32( aSizePixel.Height() );
49 			ByteString sOut( sString, RTL_TEXTENCODING_UTF8 );
50 
51 			rOStm.Write( sOut.GetBuffer(), sOut.Len() );
52 			static const sal_Char aEndChar[2] = { 0 };
53 			rOStm.Write( aEndChar, sizeof( aEndChar ));
54 			bRet = 0 == rOStm.GetError();
55 		}
56 		break;
57 
58 	case SOT_FORMATSTR_ID_NETSCAPE_IMAGE:
59 		break;
60 	}
61 	return bRet;
62 }
63 
Read(SvStream & rIStm,sal_uLong nFormat)64 sal_Bool INetImage::Read( SvStream& rIStm, sal_uLong nFormat )
65 {
66 	sal_Bool bRet = sal_False;
67 	switch( nFormat )
68 	{
69 	case SOT_FORMATSTR_ID_INET_IMAGE:
70 		{
71 			String sINetImg;
72 			rIStm.ReadCString( sINetImg, RTL_TEXTENCODING_UTF8 );
73 			xub_StrLen nStart = 0;
74 			aImageURL = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
75 			aTargetURL = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
76 			aTargetFrame = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
77 			aAlternateText = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
78 			aSizePixel.Width() = sINetImg.GetToken( 0, TOKEN_SEPARATOR,
79 													nStart ).ToInt32();
80 			aSizePixel.Height() = sINetImg.GetToken( 0, TOKEN_SEPARATOR,
81 													nStart ).ToInt32();
82 			bRet = 0 != sINetImg.Len();
83 		}
84 		break;
85 
86 	case SOT_FORMATSTR_ID_NETSCAPE_IMAGE:
87 		{
88 /*
89 	--> structure size  MUST - alignment of 4!
90 	int     iSize;              // size of all data, including variable length strings
91 	sal_Bool    bIsMap;             // For server side maps
92 	sal_Int32   iWidth;             // Fixed size data correspond to fields in LO_ImageDataStruct
93 	sal_Int32   iHeight;            //   and EDT_ImageData
94 	sal_Int32   iHSpace;
95 	sal_Int32   iVSpace;
96 	sal_Int32   iBorder;
97 	int     iLowResOffset;      // Offsets into string_data. If 0, string is NULL (not used)
98 	int     iAltOffset;         // (alternate text?)
99 	int     iAnchorOffset;      // HREF in image
100 	int     iExtraHTML_Offset;  // Extra HTML (stored in CImageElement)
101 	sal_Char pImageURL[1]; 		// Append all variable-length strings starting here
102 */
103 			rtl_TextEncoding eSysCSet = gsl_getSystemTextEncoding();
104 			sal_Int32 nVal, nAnchorOffset, nAltOffset, nFilePos;
105 			ByteString sData;
106 
107 			nFilePos = rIStm.Tell();
108 			// skip over iSize (int), bIsMao ( sal_Bool ) alignment of 4 !!!!
109 			rIStm.SeekRel( 8 );
110 			rIStm >> nVal;	aSizePixel.Width() = nVal;
111 			rIStm >> nVal;	aSizePixel.Height() = nVal;
112 			// skip over iHSpace, iVSpace, iBorder, iLowResOffset
113 			rIStm.SeekRel( 3 * sizeof( sal_Int32 ) + sizeof( int ) );
114 			rIStm >> nAltOffset;
115 			rIStm >> nAnchorOffset;
116 			// skip over iExtraHTML_Offset
117 			rIStm.SeekRel( sizeof( int ) );
118 
119 			rIStm.ReadCString( aImageURL, eSysCSet );
120 			if( nAltOffset )
121 			{
122 				rIStm.Seek( nFilePos + nAltOffset );
123 				rIStm.ReadCString( aAlternateText, eSysCSet );
124 			}
125 			else if( aAlternateText.Len() )
126 				aAlternateText.Erase();
127 
128 			if( nAnchorOffset )
129 			{
130 				rIStm.Seek( nFilePos + nAnchorOffset );
131 				rIStm.ReadCString( aTargetURL, eSysCSet );
132 			}
133 			else if( aTargetURL.Len() )
134 				aTargetURL.Erase();
135 
136 			bRet = 0 == rIStm.GetError();
137 		}
138 		break;
139 	}
140 	return bRet;
141 }
142 
143