blob: 599d7198c6660a7b018150410415d716fa17606b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#define _VCOMPAT_CXX
#include <tools/stream.hxx>
#include <tools/vcompat.hxx>
// -----------------
// - VersionCompat -
// -----------------
VersionCompat::VersionCompat( SvStream& rStm, sal_uInt16 nStreamMode, sal_uInt16 nVersion ) :
mpRWStm ( &rStm ),
mnStmMode ( nStreamMode ),
mnVersion ( nVersion )
{
if( !mpRWStm->GetError() )
{
if( STREAM_WRITE == mnStmMode )
{
*mpRWStm << mnVersion;
mnTotalSize = ( mnCompatPos = mpRWStm->Tell() ) + 4UL;
mpRWStm->SeekRel( 4L );
}
else
{
*mpRWStm >> mnVersion;
*mpRWStm >> mnTotalSize;
mnCompatPos = mpRWStm->Tell();
}
}
}
// ------------------------------------------------------------------------
VersionCompat::~VersionCompat()
{
if( STREAM_WRITE == mnStmMode )
{
const sal_uInt32 nEndPos = mpRWStm->Tell();
mpRWStm->Seek( mnCompatPos );
*mpRWStm << ( nEndPos - mnTotalSize );
mpRWStm->Seek( nEndPos );
}
else
{
const sal_uInt32 nReadSize = mpRWStm->Tell() - mnCompatPos;
if( mnTotalSize > nReadSize )
mpRWStm->SeekRel( mnTotalSize - nReadSize );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|