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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.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_tools.hxx"
#define _VCOMPAT_CXX
#include <tools/stream.hxx>
#include <tools/vcompat.hxx>
// -----------------
// - VersionCompat -
// -----------------
VersionCompat::VersionCompat( SvStream& rStm, USHORT nStreamMode, USHORT nVersion ) :
mpRWStm ( &rStm ),
mnStmMode ( nStreamMode ),
mnVersion ( nVersion )
{
if( !mpRWStm->GetError() )
{
if( STREAM_WRITE == mnStmMode )
{
*mpRWStm << mnVersion;
mnTotalSize = ( mnCompatPos = mpRWStm->Tell() ) + 4UL;
mpRWStm->SeekRel( 4L );
}
else
{
*mpRWStm >> mnVersion;
*mpRWStm >> mnTotalSize;
mnCompatPos = mpRWStm->Tell();
}
}
}
// ------------------------------------------------------------------------
VersionCompat::~VersionCompat()
{
if( STREAM_WRITE == mnStmMode )
{
const UINT32 nEndPos = mpRWStm->Tell();
mpRWStm->Seek( mnCompatPos );
*mpRWStm << ( nEndPos - mnTotalSize );
mpRWStm->Seek( nEndPos );
}
else
{
const UINT32 nReadSize = mpRWStm->Tell() - mnCompatPos;
if( mnTotalSize > nReadSize )
mpRWStm->SeekRel( mnTotalSize - nReadSize );
}
}
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