93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: svcompat.cxx,v $
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*
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* $Revision: 1.4 $
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*
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* last change: $Author: obo $ $Date: 2006-09-17 12:11:41 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_vcl.hxx"
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#ifndef _STREAM_HXX
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#include <tools/stream.hxx>
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#endif
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#ifndef _SV_SVCOMPAT_HXX
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#include <svcompat.hxx>
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#endif
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// --------------
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// - ImplCompat -
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// --------------
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ImplCompat::ImplCompat( SvStream& rStm, USHORT nStreamMode, USHORT nVersion ) :
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mpRWStm ( &rStm ),
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mnStmMode ( nStreamMode ),
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mnVersion ( nVersion )
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{
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if( !mpRWStm->GetError() )
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{
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if( STREAM_WRITE == mnStmMode )
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{
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*mpRWStm << mnVersion;
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mnTotalSize = ( mnCompatPos = mpRWStm->Tell() ) + 4UL;
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mpRWStm->SeekRel( 4L );
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}
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else
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{
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*mpRWStm >> mnVersion;
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*mpRWStm >> mnTotalSize;
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mnCompatPos = mpRWStm->Tell();
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}
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}
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}
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// ------------------------------------------------------------------------
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ImplCompat::~ImplCompat()
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{
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if( STREAM_WRITE == mnStmMode )
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{
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const UINT32 nEndPos = mpRWStm->Tell();
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mpRWStm->Seek( mnCompatPos );
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*mpRWStm << ( nEndPos - mnTotalSize );
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mpRWStm->Seek( nEndPos );
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}
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else
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{
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const UINT32 nReadSize = mpRWStm->Tell() - mnCompatPos;
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if( mnTotalSize > nReadSize )
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mpRWStm->SeekRel( mnTotalSize - nReadSize );
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}
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}
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