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/* -*- 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: */
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