96c4513d6f
2004/01/06 14:29:00 mav 1.1.2.1: #114521# instead of staream return wrappers that share mutex and remember own position
213 lines
6.5 KiB
C++
213 lines
6.5 KiB
C++
/*************************************************************************
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*
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* $RCSfile: wrapstreamforshare.cxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: hr $ $Date: 2004-02-03 18:02:34 $
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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 "wrapstreamforshare.hxx"
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using namespace ::com::sun::star;
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WrapStreamForShare::WrapStreamForShare( const uno::Reference< io::XInputStream >& xInStream,
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const SotMutexHolderRef& rMutexRef )
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: m_xInStream( xInStream )
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, m_rMutexRef( rMutexRef )
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, m_nCurPos( 0 )
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{
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m_xSeekable = uno::Reference< io::XSeekable >( m_xInStream, uno::UNO_QUERY );
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if ( !m_rMutexRef.Is() || !m_xInStream.is() || !m_xSeekable.is() )
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{
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OSL_ENSURE( sal_False, "Wrong initialization of wrapping stream!\n" );
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throw uno::RuntimeException();
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}
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}
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WrapStreamForShare::~WrapStreamForShare()
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{
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}
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// XInputStream
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sal_Int32 SAL_CALL WrapStreamForShare::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
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throw ( io::NotConnectedException,
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io::BufferSizeExceededException,
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io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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m_xSeekable->seek( m_nCurPos );
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sal_Int32 nRead = m_xInStream->readBytes( aData, nBytesToRead );
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m_nCurPos += nRead;
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return nRead;
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}
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sal_Int32 SAL_CALL WrapStreamForShare::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
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throw ( io::NotConnectedException,
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io::BufferSizeExceededException,
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io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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m_xSeekable->seek( m_nCurPos );
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sal_Int32 nRead = m_xInStream->readSomeBytes( aData, nMaxBytesToRead );
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m_nCurPos += nRead;
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return nRead;
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}
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void SAL_CALL WrapStreamForShare::skipBytes( sal_Int32 nBytesToSkip )
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throw ( io::NotConnectedException,
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io::BufferSizeExceededException,
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io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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m_xSeekable->seek( m_nCurPos );
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m_xInStream->skipBytes( nBytesToSkip );
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m_nCurPos = m_xSeekable->getPosition();
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}
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sal_Int32 SAL_CALL WrapStreamForShare::available()
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throw ( io::NotConnectedException,
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io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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return m_xInStream->available();
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}
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void SAL_CALL WrapStreamForShare::closeInput()
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throw ( io::NotConnectedException,
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io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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m_xInStream->closeInput();
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m_xInStream = uno::Reference< io::XInputStream >();
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m_xSeekable = uno::Reference< io::XSeekable >();
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}
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// XSeekable
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void SAL_CALL WrapStreamForShare::seek( sal_Int64 location )
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throw ( lang::IllegalArgumentException,
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io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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// let stream implementation do all the checking
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m_xSeekable->seek( location );
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m_nCurPos = m_xSeekable->getPosition();
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}
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sal_Int64 SAL_CALL WrapStreamForShare::getPosition()
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throw ( io::IOException,
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uno::RuntimeException)
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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return m_nCurPos;
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}
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sal_Int64 SAL_CALL WrapStreamForShare::getLength()
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throw ( io::IOException,
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uno::RuntimeException )
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{
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::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
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if ( !m_xInStream.is() )
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throw io::IOException(); // TODO
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return m_xSeekable->getLength();
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}
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