diff options
Diffstat (limited to 'ucb/source/ucp/file/filrec.cxx')
| -rw-r--r-- | ucb/source/ucp/file/filrec.cxx | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/ucb/source/ucp/file/filrec.cxx b/ucb/source/ucp/file/filrec.cxx new file mode 100644 index 000000000..5af520bc3 --- /dev/null +++ b/ucb/source/ucp/file/filrec.cxx @@ -0,0 +1,192 @@ +/* -*- 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 . + */ + + +#include "filrec.hxx" + +namespace fileaccess { + +void ReconnectingFile::disconnect() +{ + m_aFile.close(); + m_bDisconnect = true; +} + +bool ReconnectingFile::reconnect() +{ + bool bResult = false; + if ( m_bFlagsSet ) + { + disconnect(); + if ( m_aFile.open( m_nFlags ) == ::osl::FileBase::E_None + || m_aFile.open( osl_File_OpenFlag_Read ) == ::osl::FileBase::E_None ) + { + m_bDisconnect = false; + bResult = true; + } + } + + return bResult; +} + +::osl::FileBase::RC ReconnectingFile::open( sal_uInt32 uFlags ) +{ + ::osl::FileBase::RC nResult = m_aFile.open( uFlags ); + if ( nResult == ::osl::FileBase::E_None ) + { + if ( uFlags & osl_File_OpenFlag_Create ) + m_nFlags = (uFlags & ( ~osl_File_OpenFlag_Create )) | osl_File_OpenFlag_Write; + else + m_nFlags = uFlags; + + m_bFlagsSet = true; + } + + return nResult; +} + +::osl::FileBase::RC ReconnectingFile::close() +{ + m_nFlags = 0; + m_bFlagsSet = false; + m_bDisconnect = false; + + return m_aFile.close(); +} + +::osl::FileBase::RC ReconnectingFile::setPos( sal_uInt32 uHow, sal_Int64 uPos ) +{ + ::osl::FileBase::RC nRes = ::osl::FileBase::E_NETWORK; + + if ( uHow == osl_Pos_Absolut && uPos > 0 ) + { + if ( m_bDisconnect ) + { + if ( reconnect() ) + nRes = m_aFile.setPos( uHow, uPos ); + } + else + { + // E_INVAL error code means in this case that + // the file handler is invalid + nRes = m_aFile.setPos( uHow, uPos ); + if ( ( nRes == ::osl::FileBase::E_NETWORK + || nRes == ::osl::FileBase::E_INVAL ) + && reconnect() ) + nRes = m_aFile.setPos( uHow, uPos ); + } + } + else + { + if ( !m_bDisconnect ) + nRes = m_aFile.setPos( uHow, uPos ); + } + + return nRes; +} + +::osl::FileBase::RC ReconnectingFile::getPos( sal_uInt64& uPos ) +{ + if ( m_bDisconnect ) + return ::osl::FileBase::E_NETWORK; + + return m_aFile.getPos( uPos ); +} + +::osl::FileBase::RC ReconnectingFile::setSize( sal_uInt64 uSize ) +{ + ::osl::FileBase::RC nRes = ::osl::FileBase::E_NETWORK; + + if ( uSize == 0 ) + { + if ( m_bDisconnect ) + { + if ( reconnect() ) + nRes = m_aFile.setSize( uSize ); + } + else + { + // E_INVAL error code means in this case that + // the file handler is invalid + nRes = m_aFile.setSize( uSize ); + if ( ( nRes == ::osl::FileBase::E_NETWORK + || nRes == ::osl::FileBase::E_INVAL ) + && reconnect() ) + nRes = m_aFile.setSize( uSize ); + } + } + else + { + if ( !m_bDisconnect ) + nRes = m_aFile.setSize( uSize ); + } + + return nRes; +} + +::osl::FileBase::RC ReconnectingFile::getSize( sal_uInt64 &rSize ) +{ + ::osl::FileBase::RC nRes = ::osl::FileBase::E_NETWORK; + + if ( !m_bDisconnect ) + nRes = m_aFile.getSize( rSize ); + + // E_INVAL error code means in this case that + // the file handler is invalid + if ( ( nRes == ::osl::FileBase::E_NETWORK + || nRes == ::osl::FileBase::E_INVAL ) + && reconnect() ) + { + nRes = m_aFile.getSize( rSize ); + + // the repairing should be disconnected, since the position might be wrong + // but the result should be retrieved + disconnect(); + } + + return nRes; +} + +::osl::FileBase::RC ReconnectingFile::read( void *pBuffer, sal_uInt64 uBytesRequested, sal_uInt64& rBytesRead ) +{ + if ( m_bDisconnect ) + return ::osl::FileBase::E_NETWORK; + + return m_aFile.read( pBuffer, uBytesRequested, rBytesRead ); +} + +::osl::FileBase::RC ReconnectingFile::write(const void *pBuffer, sal_uInt64 uBytesToWrite, sal_uInt64& rBytesWritten) +{ + if ( m_bDisconnect ) + return ::osl::FileBase::E_NETWORK; + + return m_aFile.write( pBuffer, uBytesToWrite, rBytesWritten ); +} + +::osl::FileBase::RC ReconnectingFile::sync() const +{ + if ( m_bDisconnect ) + return ::osl::FileBase::E_NETWORK; + + return m_aFile.sync(); +} + +} // namespace fileaccess + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |