86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <svtools/imap.hxx>
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#include <tools/debug.hxx>
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/******************************************************************************
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|*
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|* Ctor
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|*
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\******************************************************************************/
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IMapCompat::IMapCompat( SvStream& rStm, const sal_uInt16 nStreamMode ) :
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pRWStm ( &rStm ),
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nStmMode ( nStreamMode )
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{
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DBG_ASSERT( nStreamMode == STREAM_READ || nStreamMode == STREAM_WRITE, "Wrong Mode!" );
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if ( !pRWStm->GetError() )
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{
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if ( nStmMode == STREAM_WRITE )
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{
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nCompatPos = pRWStm->Tell();
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pRWStm->SeekRel( 4 );
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nTotalSize = nCompatPos + 4;
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}
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else
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{
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sal_uInt32 nTotalSizeTmp;
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*pRWStm >> nTotalSizeTmp;
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nTotalSize = nTotalSizeTmp;
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nCompatPos = pRWStm->Tell();
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}
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}
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}
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/******************************************************************************
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|*
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|* Dtor
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|*
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\******************************************************************************/
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IMapCompat::~IMapCompat()
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{
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if ( !pRWStm->GetError() )
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{
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if ( nStmMode == STREAM_WRITE )
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{
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const sal_uLong nEndPos = pRWStm->Tell();
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pRWStm->Seek( nCompatPos );
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*pRWStm << (sal_uInt32) ( nEndPos - nTotalSize );
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pRWStm->Seek( nEndPos );
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}
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else
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{
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const sal_uLong nReadSize = pRWStm->Tell() - nCompatPos;
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if ( nTotalSize > nReadSize )
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pRWStm->SeekRel( nTotalSize - nReadSize );
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}
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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