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-rw-r--r--ucb/source/ucp/file/filrec.cxx192
1 files changed, 192 insertions, 0 deletions
diff --git a/ucb/source/ucp/file/filrec.cxx b/ucb/source/ucp/file/filrec.cxx
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+++ b/ucb/source/ucp/file/filrec.cxx
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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: */