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 
23 namespace 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 getSize(sal_uInt64 &rSize)
Definition: filrec.cxx:143
::osl::FileBase::RC close()
Definition: filrec.cxx:64
::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 setPos(sal_uInt32 uHow, sal_Int64 uPos)
Definition: filrec.cxx:73
::osl::FileBase::RC setSize(sal_uInt64 uSize)
Definition: filrec.cxx:112
::osl::FileBase::RC open(sal_uInt32 uFlags)
Definition: filrec.cxx:48
::osl::FileBase::RC sync() const
Definition: filrec.cxx:182
::osl::FileBase::RC read(void *pBuffer, sal_uInt64 uBytesRequested, sal_uInt64 &rBytesRead)
Definition: filrec.cxx:166