1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 // MARKER(update_precomp.py): autogen include statement, do not remove 29 #include "precompiled_tools.hxx" 30 31 #define _VCOMPAT_CXX 32 #include <tools/stream.hxx> 33 #include <tools/vcompat.hxx> 34 35 // ----------------- 36 // - VersionCompat - 37 // ----------------- 38 39 VersionCompat::VersionCompat( SvStream& rStm, sal_uInt16 nStreamMode, sal_uInt16 nVersion ) : 40 mpRWStm ( &rStm ), 41 mnStmMode ( nStreamMode ), 42 mnVersion ( nVersion ) 43 { 44 if( !mpRWStm->GetError() ) 45 { 46 if( STREAM_WRITE == mnStmMode ) 47 { 48 *mpRWStm << mnVersion; 49 mnTotalSize = ( mnCompatPos = mpRWStm->Tell() ) + 4UL; 50 mpRWStm->SeekRel( 4L ); 51 } 52 else 53 { 54 *mpRWStm >> mnVersion; 55 *mpRWStm >> mnTotalSize; 56 mnCompatPos = mpRWStm->Tell(); 57 } 58 } 59 } 60 61 // ------------------------------------------------------------------------ 62 63 VersionCompat::~VersionCompat() 64 { 65 if( STREAM_WRITE == mnStmMode ) 66 { 67 const sal_uInt32 nEndPos = mpRWStm->Tell(); 68 69 mpRWStm->Seek( mnCompatPos ); 70 *mpRWStm << ( nEndPos - mnTotalSize ); 71 mpRWStm->Seek( nEndPos ); 72 } 73 else 74 { 75 const sal_uInt32 nReadSize = mpRWStm->Tell() - mnCompatPos; 76 77 if( mnTotalSize > nReadSize ) 78 mpRWStm->SeekRel( mnTotalSize - nReadSize ); 79 } 80 } 81