LibreOffice Module ucb (master) 1
filrec.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
21#include "filrec.hxx"
22
23namespace fileaccess {
24
26{
27 m_aFile.close();
28 m_bDisconnect = true;
29}
30
32{
33 bool bResult = false;
34 if ( m_bFlagsSet )
35 {
36 disconnect();
37 if ( m_aFile.open( m_nFlags ) == ::osl::FileBase::E_None
38 || m_aFile.open( osl_File_OpenFlag_Read ) == ::osl::FileBase::E_None )
39 {
40 m_bDisconnect = false;
41 bResult = true;
42 }
43 }
44
45 return bResult;
46}
47
48::osl::FileBase::RC ReconnectingFile::open( sal_uInt32 uFlags )
49{
50 ::osl::FileBase::RC nResult = m_aFile.open( uFlags );
51 if ( nResult == ::osl::FileBase::E_None )
52 {
53 if ( uFlags & osl_File_OpenFlag_Create )
54 m_nFlags = (uFlags & ( ~osl_File_OpenFlag_Create )) | osl_File_OpenFlag_Write;
55 else
56 m_nFlags = uFlags;
57
58 m_bFlagsSet = true;
59 }
60
61 return nResult;
62}
63
64::osl::FileBase::RC ReconnectingFile::close()
65{
66 m_nFlags = 0;
67 m_bFlagsSet = false;
68 m_bDisconnect = false;
69
70 return m_aFile.close();
71}
72
73::osl::FileBase::RC ReconnectingFile::setPos( sal_uInt32 uHow, sal_Int64 uPos )
74{
75 ::osl::FileBase::RC nRes = ::osl::FileBase::E_NETWORK;
76
77 if ( uHow == osl_Pos_Absolut && uPos > 0 )
78 {
79 if ( m_bDisconnect )
80 {
81 if ( reconnect() )
82 nRes = m_aFile.setPos( uHow, uPos );
83 }
84 else
85 {
86 // E_INVAL error code means in this case that
87 // the file handler is invalid
88 nRes = m_aFile.setPos( uHow, uPos );
89 if ( ( nRes == ::osl::FileBase::E_NETWORK
90 || nRes == ::osl::FileBase::E_INVAL )
91 && reconnect() )
92 nRes = m_aFile.setPos( uHow, uPos );
93 }
94 }
95 else
96 {
97 if ( !m_bDisconnect )
98 nRes = m_aFile.setPos( uHow, uPos );
99 }
100
101 return nRes;
102}
103
104::osl::FileBase::RC ReconnectingFile::getPos( sal_uInt64& uPos )
105{
106 if ( m_bDisconnect )
107 return ::osl::FileBase::E_NETWORK;
108
109 return m_aFile.getPos( uPos );
110}
111
112::osl::FileBase::RC ReconnectingFile::setSize( sal_uInt64 uSize )
113{
114 ::osl::FileBase::RC nRes = ::osl::FileBase::E_NETWORK;
115
116 if ( uSize == 0 )
117 {
118 if ( m_bDisconnect )
119 {
120 if ( reconnect() )
121 nRes = m_aFile.setSize( uSize );
122 }
123 else
124 {
125 // E_INVAL error code means in this case that
126 // the file handler is invalid
127 nRes = m_aFile.setSize( uSize );
128 if ( ( nRes == ::osl::FileBase::E_NETWORK
129 || nRes == ::osl::FileBase::E_INVAL )
130 && reconnect() )
131 nRes = m_aFile.setSize( uSize );
132 }
133 }
134 else
135 {
136 if ( !m_bDisconnect )
137 nRes = m_aFile.setSize( uSize );
138 }
139
140 return nRes;
141}
142
143::osl::FileBase::RC ReconnectingFile::getSize( sal_uInt64 &rSize )
144{
145 ::osl::FileBase::RC nRes = ::osl::FileBase::E_NETWORK;
146
147 if ( !m_bDisconnect )
148 nRes = m_aFile.getSize( rSize );
149
150 // E_INVAL error code means in this case that
151 // the file handler is invalid
152 if ( ( nRes == ::osl::FileBase::E_NETWORK
153 || nRes == ::osl::FileBase::E_INVAL )
154 && reconnect() )
155 {
156 nRes = m_aFile.getSize( rSize );
157
158 // the repairing should be disconnected, since the position might be wrong
159 // but the result should be retrieved
160 disconnect();
161 }
162
163 return nRes;
164}
165
166::osl::FileBase::RC ReconnectingFile::read( void *pBuffer, sal_uInt64 uBytesRequested, sal_uInt64& rBytesRead )
167{
168 if ( m_bDisconnect )
169 return ::osl::FileBase::E_NETWORK;
170
171 return m_aFile.read( pBuffer, uBytesRequested, rBytesRead );
172}
173
174::osl::FileBase::RC ReconnectingFile::write(const void *pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64& rBytesWritten)
175{
176 if ( m_bDisconnect )
177 return ::osl::FileBase::E_NETWORK;
178
179 return m_aFile.write( pBuffer, uBytesToWrite, rBytesWritten );
180}
181
182::osl::FileBase::RC ReconnectingFile::sync() const
183{
184 if ( m_bDisconnect )
185 return ::osl::FileBase::E_NETWORK;
186
187 return m_aFile.sync();
188}
189
190} // namespace fileaccess
191
192/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
::osl::FileBase::RC close()
Definition: filrec.cxx:64
::osl::FileBase::RC setSize(sal_uInt64 uSize)
Definition: filrec.cxx:112
::osl::FileBase::RC getPos(sal_uInt64 &uPos)
Definition: filrec.cxx:104
::osl::FileBase::RC write(const void *pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64 &rBytesWritten)
Definition: filrec.cxx:174
::osl::FileBase::RC read(void *pBuffer, sal_uInt64 uBytesRequested, sal_uInt64 &rBytesRead)
Definition: filrec.cxx:166
::osl::FileBase::RC setPos(sal_uInt32 uHow, sal_Int64 uPos)
Definition: filrec.cxx:73
::osl::FileBase::RC sync() const
Definition: filrec.cxx:182
::osl::FileBase::RC getSize(sal_uInt64 &rSize)
Definition: filrec.cxx:143
::osl::FileBase::RC open(sal_uInt32 uFlags)
Definition: filrec.cxx:48