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/**************************************************************
*
* 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.
*
*************************************************************/
#ifndef _STREAM_HXX
#include <tools/stream.hxx>
#endif
#ifndef _PPTATOM_HXX_
#include "pptatom.hxx"
#endif
using namespace ppt;
Atom::Atom( const DffRecordHeader& rRecordHeader, SvStream& rStream )
: mrStream( rStream )
, maRecordHeader( rRecordHeader )
, mpFirstChild( 0 )
, mpNextAtom( 0 )
{
if( isContainer() )
{
if( seekToContent() )
{
DffRecordHeader aChildHeader;
Atom* pLastAtom = NULL;
// retrieve file size (to allow sanity checks)
const sal_Size nStreamPos = mrStream.Tell();
mrStream.Seek( STREAM_SEEK_TO_END );
const sal_Size nStreamSize = mrStream.Tell();
mrStream.Seek( nStreamPos );
while( (mrStream.GetError() == 0 )
&& ( mrStream.Tell() < nStreamSize )
&& ( mrStream.Tell() < maRecordHeader.GetRecEndFilePos() ) )
{
mrStream >> aChildHeader;
if( mrStream.GetError() == 0 )
{
Atom* pAtom = new Atom( aChildHeader, mrStream );
if( pLastAtom )
pLastAtom->mpNextAtom = pAtom;
if( mpFirstChild == NULL )
mpFirstChild = pAtom;
pLastAtom = pAtom;
}
}
}
}
maRecordHeader.SeekToEndOfRecord( mrStream );
}
Atom::~Atom()
{
Atom* pChild = mpFirstChild;
while( pChild )
{
Atom* pNextChild = pChild->mpNextAtom;
delete pChild;
pChild = pNextChild;
}
}
/** imports this atom and its child atoms */
Atom* Atom::import( const DffRecordHeader& rRootRecordHeader, SvStream& rStCtrl )
{
Atom* pRootAtom = new Atom( rRootRecordHeader, rStCtrl );
if( rStCtrl.GetError() == 0 )
{
return pRootAtom;
}
else
{
delete pRootAtom;
return NULL;
}
}
/** returns the next child atom after pLast with nRecType or NULL */
const Atom* Atom::findNextChildAtom( sal_uInt16 nRecType, const Atom* pLast ) const
{
Atom* pChild = pLast != NULL ? pLast->mpNextAtom : mpFirstChild;
while( pChild && pChild->maRecordHeader.nRecType != nRecType )
{
pChild = pChild->mpNextAtom;
}
return pChild;
}
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