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 <tools/debug.hxx>
      21             : 
      22             : #include "sdiocmpt.hxx"
      23             : 
      24             : //////////////////////////////////////////////////////////////////////////////
      25             : 
      26           0 : old_SdrDownCompat::old_SdrDownCompat(SvStream& rNewStream, sal_uInt16 nNewMode)
      27             : :   rStream(rNewStream),
      28             :     nSubRecSiz(0),
      29             :     nSubRecPos(0),
      30             :     nMode(nNewMode),
      31           0 :     bOpen(sal_False)
      32             : {
      33           0 :     OpenSubRecord();
      34           0 : }
      35             : 
      36           0 : old_SdrDownCompat::~old_SdrDownCompat()
      37             : {
      38           0 :     if(bOpen)
      39           0 :         CloseSubRecord();
      40           0 : }
      41             : 
      42           0 : void old_SdrDownCompat::Read()
      43             : {
      44           0 :     rStream >> nSubRecSiz;
      45           0 : }
      46             : 
      47           0 : void old_SdrDownCompat::Write()
      48             : {
      49           0 :     rStream << nSubRecSiz;
      50           0 : }
      51             : 
      52           0 : void old_SdrDownCompat::OpenSubRecord()
      53             : {
      54           0 :     if(rStream.GetError())
      55           0 :         return;
      56             : 
      57           0 :     nSubRecPos = rStream.Tell();
      58             : 
      59           0 :     if(nMode == STREAM_READ)
      60             :     {
      61           0 :         Read();
      62             :     }
      63           0 :     else if(nMode == STREAM_WRITE)
      64             :     {
      65           0 :         Write();
      66             :     }
      67             : 
      68           0 :     bOpen = sal_True;
      69             : }
      70             : 
      71           0 : void old_SdrDownCompat::CloseSubRecord()
      72             : {
      73           0 :     if(rStream.GetError())
      74           0 :         return;
      75             : 
      76           0 :     sal_uInt32 nAktPos(rStream.Tell());
      77             : 
      78           0 :     if(nMode == STREAM_READ)
      79             :     {
      80           0 :         sal_uInt32 nReadAnz(nAktPos - nSubRecPos);
      81           0 :         if(nReadAnz != nSubRecSiz)
      82             :         {
      83           0 :             rStream.Seek(nSubRecPos + nSubRecSiz);
      84             :         }
      85             :     }
      86           0 :     else if(nMode == STREAM_WRITE)
      87             :     {
      88           0 :         nSubRecSiz = nAktPos - nSubRecPos;
      89           0 :         rStream.Seek(nSubRecPos);
      90           0 :         Write();
      91           0 :         rStream.Seek(nAktPos);
      92             :     }
      93             : 
      94           0 :     bOpen = sal_False;
      95             : }
      96             : 
      97             : /*************************************************************************
      98             : |*
      99             : |* Konstruktor, schreibt bzw. liest Versionsnummer
     100             : |*
     101             : \************************************************************************/
     102             : 
     103           0 : SdIOCompat::SdIOCompat(SvStream& rNewStream, sal_uInt16 nNewMode, sal_uInt16 nVer)
     104           0 : :   old_SdrDownCompat(rNewStream, nNewMode), nVersion(nVer)
     105             : {
     106           0 :     if (nNewMode == STREAM_WRITE)
     107             :     {
     108             :         DBG_ASSERT(nVer != SDIOCOMPAT_VERSIONDONTKNOW,
     109             :                    "kann unbekannte Version nicht schreiben");
     110           0 :         rNewStream << nVersion;
     111             :     }
     112           0 :     else if (nNewMode == STREAM_READ)
     113             :     {
     114             :         DBG_ASSERT(nVer == SDIOCOMPAT_VERSIONDONTKNOW,
     115             :                    "Lesen mit Angabe der Version ist Quatsch!");
     116           0 :         rNewStream >> nVersion;
     117             :     }
     118           0 : }
     119             : 
     120           0 : SdIOCompat::~SdIOCompat()
     121             : {
     122           0 : }
     123             : 
     124             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */