/src/libreoffice/vcl/source/treelist/imap3.cxx
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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 <vcl/imap.hxx> |
21 | | |
22 | | #include <tools/debug.hxx> |
23 | | |
24 | | /****************************************************************************** |
25 | | |* |
26 | | |* Ctor |
27 | | |* |
28 | | \******************************************************************************/ |
29 | | |
30 | | IMapCompat::IMapCompat(SvStream& rStm, const StreamMode nStreamMode) |
31 | 0 | : pRWStm(&rStm) |
32 | 0 | , nCompatPos(0) |
33 | 0 | , nTotalSize(0) |
34 | 0 | , nStmMode(nStreamMode) |
35 | 0 | { |
36 | 0 | DBG_ASSERT(nStreamMode == StreamMode::READ || nStreamMode == StreamMode::WRITE, "Wrong Mode!"); |
37 | |
|
38 | 0 | if (pRWStm->GetError()) |
39 | 0 | return; |
40 | | |
41 | 0 | if (nStmMode == StreamMode::WRITE) |
42 | 0 | { |
43 | 0 | nCompatPos = pRWStm->Tell(); |
44 | 0 | pRWStm->SeekRel(4); |
45 | 0 | nTotalSize = nCompatPos + 4; |
46 | 0 | } |
47 | 0 | else |
48 | 0 | { |
49 | 0 | sal_uInt32 nTotalSizeTmp; |
50 | 0 | pRWStm->ReadUInt32(nTotalSizeTmp); |
51 | 0 | nTotalSize = nTotalSizeTmp; |
52 | 0 | nCompatPos = pRWStm->Tell(); |
53 | 0 | } |
54 | 0 | } |
55 | | |
56 | | /****************************************************************************** |
57 | | |* |
58 | | |* Dtor |
59 | | |* |
60 | | \******************************************************************************/ |
61 | | |
62 | | IMapCompat::~IMapCompat() |
63 | 0 | { |
64 | 0 | if (pRWStm->GetError()) |
65 | 0 | return; |
66 | | |
67 | 0 | if (nStmMode == StreamMode::WRITE) |
68 | 0 | { |
69 | 0 | const sal_uInt64 nEndPos = pRWStm->Tell(); |
70 | |
|
71 | 0 | pRWStm->Seek(nCompatPos); |
72 | 0 | pRWStm->WriteUInt32(nEndPos - nTotalSize); |
73 | 0 | pRWStm->Seek(nEndPos); |
74 | 0 | } |
75 | 0 | else |
76 | 0 | { |
77 | 0 | const sal_uInt64 nReadSize = pRWStm->Tell() - nCompatPos; |
78 | |
|
79 | 0 | if (nTotalSize > nReadSize) |
80 | 0 | pRWStm->SeekRel(nTotalSize - nReadSize); |
81 | 0 | } |
82 | 0 | } |
83 | | |
84 | | /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |