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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 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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