AOO410/main/svtools/source/urlobj/inetimg.cxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svtools.hxx"
#include <tools/debug.hxx>
#include <sot/formats.hxx>
#include <tools/stream.hxx>

#include <svtools/inetimg.hxx>

#define TOKEN_SEPARATOR '\001'

sal_Bool INetImage::Write( SvStream& rOStm, sal_uLong nFormat ) const
{
	sal_Bool bRet = sal_False;
	switch( nFormat )
	{
	case SOT_FORMATSTR_ID_INET_IMAGE:
		{
			String sString;
			(sString += aImageURL ) += TOKEN_SEPARATOR;
			(sString += aTargetURL ) += TOKEN_SEPARATOR;
			(sString += aTargetFrame ) += TOKEN_SEPARATOR;
			(sString += aAlternateText ) += TOKEN_SEPARATOR;
			sString += String::CreateFromInt32( aSizePixel.Width() );
			sString += TOKEN_SEPARATOR;
			sString += String::CreateFromInt32( aSizePixel.Height() );
			ByteString sOut( sString, RTL_TEXTENCODING_UTF8 );

			rOStm.Write( sOut.GetBuffer(), sOut.Len() );
			static const sal_Char aEndChar[2] = { 0 };
			rOStm.Write( aEndChar, sizeof( aEndChar ));
			bRet = 0 == rOStm.GetError();
		}
		break;

	case SOT_FORMATSTR_ID_NETSCAPE_IMAGE:
		break;
	}
	return bRet;
}

sal_Bool INetImage::Read( SvStream& rIStm, sal_uLong nFormat )
{
	sal_Bool bRet = sal_False;
	switch( nFormat )
	{
	case SOT_FORMATSTR_ID_INET_IMAGE:
		{
			String sINetImg;
			rIStm.ReadCString( sINetImg, RTL_TEXTENCODING_UTF8 );
			xub_StrLen nStart = 0;
			aImageURL = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
			aTargetURL = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
			aTargetFrame = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
			aAlternateText = sINetImg.GetToken( 0, TOKEN_SEPARATOR, nStart );
			aSizePixel.Width() = sINetImg.GetToken( 0, TOKEN_SEPARATOR,
													nStart ).ToInt32();
			aSizePixel.Height() = sINetImg.GetToken( 0, TOKEN_SEPARATOR,
													nStart ).ToInt32();
			bRet = 0 != sINetImg.Len();
		}
		break;

	case SOT_FORMATSTR_ID_NETSCAPE_IMAGE:
		{
/*
	--> structure size  MUST - alignment of 4!
	int     iSize;              // size of all data, including variable length strings
	sal_Bool    bIsMap;             // For server side maps
	sal_Int32   iWidth;             // Fixed size data correspond to fields in LO_ImageDataStruct
	sal_Int32   iHeight;            //   and EDT_ImageData
	sal_Int32   iHSpace;
	sal_Int32   iVSpace;
	sal_Int32   iBorder;
	int     iLowResOffset;      // Offsets into string_data. If 0, string is NULL (not used)
	int     iAltOffset;         // (alternate text?)
	int     iAnchorOffset;      // HREF in image
	int     iExtraHTML_Offset;  // Extra HTML (stored in CImageElement)
	sal_Char pImageURL[1]; 		// Append all variable-length strings starting here
*/
			rtl_TextEncoding eSysCSet = gsl_getSystemTextEncoding();
			sal_Int32 nVal, nAnchorOffset, nAltOffset, nFilePos;
			ByteString sData;

			nFilePos = rIStm.Tell();
			// skip over iSize (int), bIsMao ( sal_Bool ) alignment of 4 !!!!
			rIStm.SeekRel( 8 );
			rIStm >> nVal;	aSizePixel.Width() = nVal;
			rIStm >> nVal;	aSizePixel.Height() = nVal;
			// skip over iHSpace, iVSpace, iBorder, iLowResOffset
			rIStm.SeekRel( 3 * sizeof( sal_Int32 ) + sizeof( int ) );
			rIStm >> nAltOffset;
			rIStm >> nAnchorOffset;
			// skip over iExtraHTML_Offset
			rIStm.SeekRel( sizeof( int ) );

			rIStm.ReadCString( aImageURL, eSysCSet );
			if( nAltOffset )
			{
				rIStm.Seek( nFilePos + nAltOffset );
				rIStm.ReadCString( aAlternateText, eSysCSet );
			}
			else if( aAlternateText.Len() )
				aAlternateText.Erase();

			if( nAnchorOffset )
			{
				rIStm.Seek( nFilePos + nAnchorOffset );
				rIStm.ReadCString( aTargetURL, eSysCSet );
			}
			else if( aTargetURL.Len() )
				aTargetURL.Erase();

			bRet = 0 == rIStm.GetError();
		}
		break;
	}
	return bRet;
}