/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sfx2.hxx"
#include <tools/stream.hxx>
#include <tools/cachestr.hxx>

#include <sot/storage.hxx>
#include <sot/formats.hxx>

#include <sfx2/mieclip.hxx>
#include <sfx2/sfxuno.hxx>

MSE40HTMLClipFormatObj::~MSE40HTMLClipFormatObj()
{
	delete pStrm;
}

SvStream* MSE40HTMLClipFormatObj::IsValid( SvStream& rStream )
{
	sal_Bool bRet = sal_False;
	if( pStrm )
		delete pStrm, pStrm = 0;

	ByteString sLine, sVersion;
	sal_Int32 nStt = -1, nEnd = -1;
	sal_Int32 nStartFragment = 0, nEndFragment = 0;
	sal_uInt16 nIndex = 0;

	rStream.Seek(STREAM_SEEK_TO_BEGIN);
	rStream.ResetError();

	if( rStream.ReadLine( sLine ) &&
		sLine.GetToken( 0, ':', nIndex ) == "Version" )
	{
		sVersion = sLine.Copy( nIndex );
		while( rStream.ReadLine( sLine ) )
		{
			nIndex = 0;
			ByteString sTmp( sLine.GetToken( 0, ':', nIndex ) );
			if( sTmp == "StartHTML" )
				nStt = sLine.Erase( 0, nIndex ).ToInt32();
			else if( sTmp == "EndHTML" )
				nEnd = sLine.Erase( 0, nIndex ).ToInt32();
			else if( sTmp == "StartFragment" )
			{
				nStartFragment = sLine.Erase( 0, nIndex ).ToInt32();
				if( nStt == -1 )
					nStt = nStartFragment;
			}
			else if( sTmp == "EndFragment" )
			{
				nEndFragment = sLine.Erase( 0, nIndex ).ToInt32();
				if (nEnd == -1 )
					nEnd = nEndFragment;
			}
			else if( sTmp == "SourceURL" )
				sBaseURL = String( sLine.Erase( 0, nIndex ), RTL_TEXTENCODING_UTF8);

			if( nEnd >= 0 && nStt >= 0 &&
				( sBaseURL.Len() || rStream.Tell() >= (sal_uInt32)nStt ))
			{
				bRet = sal_True;
				break;
			}
		}
	}

	if( bRet )
	{
		rStream.Seek( nStt );

		pStrm = new SvCacheStream( ( nEnd - nStt < 0x10000l
										? nEnd - nStt + 32
										: 0 ));
		*pStrm << rStream;
		pStrm->SetStreamSize( nEnd - nStt + 1L );
		pStrm->Seek( STREAM_SEEK_TO_BEGIN );
	}

	return pStrm;
}