Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include <svtools/imap.hxx>
      21             : 
      22             : #include <tools/debug.hxx>
      23             : 
      24             : 
      25             : /******************************************************************************
      26             : |*
      27             : |* Ctor
      28             : |*
      29             : \******************************************************************************/
      30             : 
      31           0 : IMapCompat::IMapCompat( SvStream& rStm, const sal_uInt16 nStreamMode ) :
      32             :             pRWStm      ( &rStm ),
      33           0 :             nStmMode    ( nStreamMode )
      34             : {
      35             :     DBG_ASSERT( nStreamMode == STREAM_READ || nStreamMode == STREAM_WRITE, "Wrong Mode!" );
      36             : 
      37           0 :     if ( !pRWStm->GetError() )
      38             :     {
      39           0 :         if ( nStmMode == STREAM_WRITE )
      40             :         {
      41           0 :             nCompatPos = pRWStm->Tell();
      42           0 :             pRWStm->SeekRel( 4 );
      43           0 :             nTotalSize = nCompatPos + 4;
      44             :         }
      45             :         else
      46             :         {
      47             :             sal_uInt32 nTotalSizeTmp;
      48           0 :             pRWStm->ReadUInt32( nTotalSizeTmp );
      49           0 :             nTotalSize = nTotalSizeTmp;
      50           0 :             nCompatPos = pRWStm->Tell();
      51             :         }
      52             :     }
      53           0 : }
      54             : 
      55             : 
      56             : /******************************************************************************
      57             : |*
      58             : |* Dtor
      59             : |*
      60             : \******************************************************************************/
      61             : 
      62           0 : IMapCompat::~IMapCompat()
      63             : {
      64           0 :     if ( !pRWStm->GetError() )
      65             :     {
      66           0 :         if ( nStmMode == STREAM_WRITE )
      67             :         {
      68           0 :             const sal_uLong nEndPos = pRWStm->Tell();
      69             : 
      70           0 :             pRWStm->Seek( nCompatPos );
      71           0 :             pRWStm->WriteUInt32( (sal_uInt32) ( nEndPos - nTotalSize ) );
      72           0 :             pRWStm->Seek( nEndPos );
      73             :         }
      74             :         else
      75             :         {
      76           0 :             const sal_uLong nReadSize = pRWStm->Tell() - nCompatPos;
      77             : 
      78           0 :             if ( nTotalSize > nReadSize )
      79           0 :                 pRWStm->SeekRel( nTotalSize - nReadSize );
      80             :         }
      81             :     }
      82           0 : }
      83             : 
      84             : 
      85             : 
      86             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */