525 lines
18 KiB
C++
525 lines
18 KiB
C++
/*************************************************************************
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*
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* $RCSfile: switchpersistencestream.cxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: rt $ $Date: 2005-10-19 12:48:41 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef _OSL_DIAGNOSE_H_
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#include <osl/diagnose.h>
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#endif
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#include <switchpersistencestream.hxx>
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using namespace ::com::sun::star;
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// ========================================================================
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struct SPStreamData_Impl
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{
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uno::Reference< lang::XMultiServiceFactory > m_xFactory;
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sal_Bool m_bInStreamBased;
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// the streams below are not visible from outside so there is no need to remember position
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// original stream related members
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uno::Reference< io::XStream > m_xOrigStream;
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uno::Reference< io::XTruncate > m_xOrigTruncate;
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uno::Reference< io::XSeekable > m_xOrigSeekable;
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uno::Reference< io::XInputStream > m_xOrigInStream;
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uno::Reference< io::XOutputStream > m_xOrigOutStream;
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sal_Bool m_bInOpen;
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sal_Bool m_bOutOpen;
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SPStreamData_Impl(
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const uno::Reference< lang::XMultiServiceFactory >& xFactory,
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sal_Bool bInStreamBased,
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const uno::Reference< io::XStream >& xOrigStream,
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const uno::Reference< io::XTruncate >& xOrigTruncate,
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const uno::Reference< io::XSeekable >& xOrigSeekable,
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const uno::Reference< io::XInputStream >& xOrigInStream,
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const uno::Reference< io::XOutputStream >& xOrigOutStream,
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sal_Bool bInOpen,
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sal_Bool bOutOpen )
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: m_xFactory( xFactory )
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, m_bInStreamBased( bInStreamBased )
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, m_xOrigStream( xOrigStream )
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, m_xOrigInStream( xOrigInStream )
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, m_xOrigOutStream( xOrigOutStream )
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, m_xOrigTruncate( xOrigTruncate )
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, m_xOrigSeekable( xOrigSeekable )
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, m_bInOpen( bInOpen )
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, m_bOutOpen( bOutOpen )
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{
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}
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};
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// ========================================================================
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// ------------------------------------------------------------------------
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SwitchablePersistenceStream::SwitchablePersistenceStream(
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const uno::Reference< lang::XMultiServiceFactory >& xFactory,
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const uno::Reference< io::XStream >& xStream )
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: m_pStreamData( NULL )
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, m_xFactory( xFactory )
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{
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SwitchPersistenceTo( xStream );
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}
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// ------------------------------------------------------------------------
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SwitchablePersistenceStream::SwitchablePersistenceStream(
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const uno::Reference< lang::XMultiServiceFactory >& xFactory,
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const uno::Reference< io::XInputStream >& xInputStream )
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: m_pStreamData( NULL )
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, m_xFactory( xFactory )
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{
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SwitchPersistenceTo( xInputStream );
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}
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// ------------------------------------------------------------------------
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SwitchablePersistenceStream::~SwitchablePersistenceStream()
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{
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CloseAll_Impl();
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}
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// ------------------------------------------------------------------------
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void SwitchablePersistenceStream::SwitchPersistenceTo( const uno::Reference< io::XStream >& xStream )
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{
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uno::Reference< io::XTruncate > xNewTruncate( xStream, uno::UNO_QUERY_THROW );
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uno::Reference< io::XSeekable > xNewSeekable( xStream, uno::UNO_QUERY_THROW );
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uno::Reference< io::XInputStream > xNewInStream = xStream->getInputStream();
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uno::Reference< io::XOutputStream > xNewOutStream = xStream->getOutputStream();
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if ( !xNewInStream.is() || !xNewOutStream.is() )
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throw uno::RuntimeException();
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sal_Int64 nPos = 0;
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sal_Bool bInOpen = sal_False;
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sal_Bool bOutOpen = sal_False;
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if ( m_pStreamData && m_pStreamData->m_xOrigSeekable.is() )
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{
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// check that the length is the same
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if ( m_pStreamData->m_xOrigSeekable->getLength() != xNewSeekable->getLength() )
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throw uno::RuntimeException();
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// get the current position
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nPos = m_pStreamData->m_xOrigSeekable->getPosition();
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bInOpen = m_pStreamData->m_bInOpen;
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bOutOpen = m_pStreamData->m_bOutOpen;
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}
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xNewSeekable->seek( nPos );
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CloseAll_Impl();
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m_pStreamData = new SPStreamData_Impl( m_xFactory, sal_False,
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xStream, xNewTruncate, xNewSeekable, xNewInStream, xNewOutStream,
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bInOpen, bOutOpen );
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}
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// ------------------------------------------------------------------------
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void SwitchablePersistenceStream::SwitchPersistenceTo( const uno::Reference< io::XInputStream >& xInputStream )
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{
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uno::Reference< io::XStream > xNewStream;
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uno::Reference< io::XTruncate > xNewTruncate;
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uno::Reference< io::XSeekable > xNewSeekable( xInputStream, uno::UNO_QUERY_THROW );
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uno::Reference< io::XOutputStream > xNewOutStream;
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if ( !xInputStream.is() )
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throw uno::RuntimeException();
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sal_Int64 nPos = 0;
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sal_Bool bInOpen = sal_False;
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sal_Bool bOutOpen = sal_False;
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if ( m_pStreamData && m_pStreamData->m_xOrigSeekable.is() )
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{
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// check that the length is the same
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if ( m_pStreamData->m_xOrigSeekable->getLength() != xNewSeekable->getLength() )
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throw uno::RuntimeException();
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// get the current position
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nPos = m_pStreamData->m_xOrigSeekable->getPosition();
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bInOpen = m_pStreamData->m_bInOpen;
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bOutOpen = m_pStreamData->m_bOutOpen;
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}
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xNewSeekable->seek( nPos );
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CloseAll_Impl();
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m_pStreamData = new SPStreamData_Impl( m_xFactory, sal_True,
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xNewStream, xNewTruncate, xNewSeekable, xInputStream, xNewOutStream,
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bInOpen, bOutOpen );
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}
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// ------------------------------------------------------------------------
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void copyInputToOutput_Impl( const uno::Reference< io::XInputStream >& aIn,
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const uno::Reference< io::XOutputStream >& aOut );
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// ------------------------------------------------------------------------
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void SwitchablePersistenceStream::CopyAndSwitchPersistenceTo( const uno::Reference< io::XStream >& xStream )
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{
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uno::Reference< io::XStream > xTargetStream = xStream;
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uno::Reference< io::XSeekable > xTargetSeek;
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if ( !xTargetStream.is() )
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{
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xTargetStream = uno::Reference < io::XStream >(
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m_xFactory->createInstance( ::rtl::OUString::createFromAscii( "com.sun.star.io.TempFile" ) ),
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uno::UNO_QUERY_THROW );
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xTargetSeek = uno::Reference< io::XSeekable >( xTargetStream, uno::UNO_QUERY_THROW );
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}
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else
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{
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// the provided stream must be empty
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xTargetSeek = uno::Reference< io::XSeekable >( xTargetStream, uno::UNO_QUERY_THROW );
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if ( xTargetSeek->getLength() )
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throw io::IOException();
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}
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uno::Reference< io::XTruncate > xTargetTruncate( xTargetStream, uno::UNO_QUERY_THROW );
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uno::Reference< io::XInputStream > xTargetInStream = xTargetStream->getInputStream();
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uno::Reference< io::XOutputStream > xTargetOutStream = xTargetStream->getOutputStream();
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if ( !xTargetInStream.is() || !xTargetOutStream.is() )
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throw uno::RuntimeException();
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if ( !m_pStreamData->m_xOrigInStream.is() || !m_pStreamData->m_xOrigSeekable.is() )
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throw uno::RuntimeException();
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sal_Int64 nPos = m_pStreamData->m_xOrigSeekable->getPosition();
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m_pStreamData->m_xOrigSeekable->seek( 0 );
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copyInputToOutput_Impl( m_pStreamData->m_xOrigInStream, xTargetOutStream );
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xTargetOutStream->flush();
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xTargetSeek->seek( nPos );
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sal_Bool bInOpen = m_pStreamData->m_bInOpen;
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sal_Bool bOutOpen = m_pStreamData->m_bOutOpen;
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CloseAll_Impl();
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m_pStreamData = new SPStreamData_Impl( m_xFactory, sal_False,
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xTargetStream, xTargetTruncate, xTargetSeek, xTargetInStream, xTargetOutStream,
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bInOpen, bOutOpen );
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}
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// ------------------------------------------------------------------------
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void SwitchablePersistenceStream::CloseAll_Impl()
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{
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if ( m_pStreamData )
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{
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delete m_pStreamData;
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m_pStreamData = NULL;
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}
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}
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// com::sun::star::io::XStream
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// ------------------------------------------------------------------------
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uno::Reference< io::XInputStream > SAL_CALL SwitchablePersistenceStream::getInputStream( )
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throw (uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( m_pStreamData )
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m_pStreamData->m_bInOpen = sal_True;
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return static_cast< io::XInputStream* >( this );
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}
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// ------------------------------------------------------------------------
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uno::Reference< io::XOutputStream > SAL_CALL SwitchablePersistenceStream::getOutputStream( )
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throw (uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( m_pStreamData )
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m_pStreamData->m_bOutOpen = sal_True;
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return static_cast< io::XOutputStream* >( this );
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}
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// com::sun::star::io::XInputStream
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// ------------------------------------------------------------------------
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::sal_Int32 SAL_CALL SwitchablePersistenceStream::readBytes( uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nBytesToRead )
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throw (io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigInStream.is() )
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throw uno::RuntimeException();
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return m_pStreamData->m_xOrigInStream->readBytes( aData, nBytesToRead );
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}
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// ------------------------------------------------------------------------
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::sal_Int32 SAL_CALL SwitchablePersistenceStream::readSomeBytes( uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nMaxBytesToRead )
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throw (io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigInStream.is() )
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throw uno::RuntimeException();
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return m_pStreamData->m_xOrigInStream->readBytes( aData, nMaxBytesToRead );
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}
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::skipBytes( ::sal_Int32 nBytesToSkip )
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throw (io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigInStream.is() )
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throw uno::RuntimeException();
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m_pStreamData->m_xOrigInStream->skipBytes( nBytesToSkip );
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}
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// ------------------------------------------------------------------------
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::sal_Int32 SAL_CALL SwitchablePersistenceStream::available( )
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throw (io::NotConnectedException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigInStream.is() )
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throw uno::RuntimeException();
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return m_pStreamData->m_xOrigInStream->available();
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}
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::closeInput()
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throw (io::NotConnectedException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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m_pStreamData->m_bInOpen = sal_False;
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if ( !m_pStreamData->m_bOutOpen )
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CloseAll_Impl();
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}
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// com::sun::star::io::XOutputStream
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::writeBytes( const uno::Sequence< ::sal_Int8 >& aData )
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throw (io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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if ( m_pStreamData->m_bInStreamBased )
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throw io::IOException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigOutStream.is() )
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throw uno::RuntimeException();
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m_pStreamData->m_xOrigOutStream->writeBytes( aData );
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}
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::flush( )
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throw (io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData || m_pStreamData->m_bInStreamBased )
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{
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OSL_ENSURE( sal_False, "flush() is not acceptable!\n" );
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return;
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// in future throw exception, for now some code might call flush() on closed stream
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// since file ucp implementation allows it
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// throw io::NotConnectedException();
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}
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigOutStream.is() )
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throw uno::RuntimeException();
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m_pStreamData->m_xOrigOutStream->flush();
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}
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::closeOutput( )
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throw (io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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m_pStreamData->m_bOutOpen = sal_False;
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if ( !m_pStreamData->m_bInOpen )
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CloseAll_Impl();
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}
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// com::sun::star::io::XTruncate
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::truncate( )
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throw (io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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if ( m_pStreamData->m_bInStreamBased )
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throw io::IOException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigTruncate.is() )
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throw uno::RuntimeException();
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m_pStreamData->m_xOrigTruncate->truncate();
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}
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// com::sun::star::io::XSeekable
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// ------------------------------------------------------------------------
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void SAL_CALL SwitchablePersistenceStream::seek( ::sal_Int64 location )
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throw (lang::IllegalArgumentException, io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigSeekable.is() )
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throw uno::RuntimeException();
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m_pStreamData->m_xOrigSeekable->seek( location );
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}
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// ------------------------------------------------------------------------
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::sal_Int64 SAL_CALL SwitchablePersistenceStream::getPosition( )
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throw (io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
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if ( !m_pStreamData )
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throw io::NotConnectedException();
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// the original stream data should be provided
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if ( !m_pStreamData->m_xOrigSeekable.is() )
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throw uno::RuntimeException();
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return m_pStreamData->m_xOrigSeekable->getPosition();
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}
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// ------------------------------------------------------------------------
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::sal_Int64 SAL_CALL SwitchablePersistenceStream::getLength( )
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throw (io::IOException, uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_aMutex );
|
|
|
|
if ( !m_pStreamData )
|
|
throw io::NotConnectedException();
|
|
|
|
// the original stream data should be provided
|
|
if ( !m_pStreamData->m_xOrigSeekable.is() )
|
|
throw uno::RuntimeException();
|
|
|
|
return m_pStreamData->m_xOrigSeekable->getLength();
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
void SAL_CALL SwitchablePersistenceStream::waitForCompletion()
|
|
throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException)
|
|
{
|
|
if ( !m_pStreamData )
|
|
throw io::NotConnectedException();
|
|
|
|
uno::Reference< io::XAsyncOutputMonitor > asyncOutputMonitor( m_pStreamData->m_xOrigOutStream, uno::UNO_QUERY );
|
|
if ( asyncOutputMonitor.is() )
|
|
asyncOutputMonitor->waitForCompletion();
|
|
}
|
|
|