AOO410/main/svl/source/fsstor/oinputstreamcontainer.cxx

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 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svl.hxx"

#include "oinputstreamcontainer.hxx"
#include <cppuhelper/typeprovider.hxx>

using namespace ::com::sun::star;

//-----------------------------------------------
OFSInputStreamContainer::OFSInputStreamContainer( const uno::Reference< io::XInputStream >& xStream )
: m_xInputStream( xStream )
, m_xSeekable( xStream, uno::UNO_QUERY )
, m_bSeekable( sal_False )
, m_bDisposed( sal_False )
, m_pListenersContainer( NULL )
{
	m_bSeekable = m_xSeekable.is();
}

//-----------------------------------------------
OFSInputStreamContainer::~OFSInputStreamContainer()
{
	if ( m_pListenersContainer )
	{
		delete m_pListenersContainer;
		m_pListenersContainer = NULL;
	}
}

//-----------------------------------------------
uno::Sequence< uno::Type > SAL_CALL OFSInputStreamContainer::getTypes()
		throw ( uno::RuntimeException )
{
	static ::cppu::OTypeCollection* pTypeCollection = NULL ;

	if ( pTypeCollection == NULL )
	{
		::osl::MutexGuard aGuard( m_aMutex ) ;

		if ( pTypeCollection == NULL )
		{
			if ( m_bSeekable )
			{
				static ::cppu::OTypeCollection aTypeCollection(
            			::getCppuType(( const uno::Reference< io::XStream >* )NULL ),
            			::getCppuType(( const uno::Reference< io::XInputStream >* )NULL ),
            			::getCppuType(( const uno::Reference< io::XSeekable >* )NULL ) );

				pTypeCollection = &aTypeCollection ;
			}
			else
			{
				static ::cppu::OTypeCollection aTypeCollection(
            			::getCppuType(( const uno::Reference< io::XStream >* )NULL ),
            			::getCppuType(( const uno::Reference< io::XInputStream >* )NULL ) );

				pTypeCollection = &aTypeCollection ;
			}
		}
	}

	return pTypeCollection->getTypes() ;

}

//-----------------------------------------------
uno::Any SAL_CALL OFSInputStreamContainer::queryInterface( const uno::Type& rType )
		throw( uno::RuntimeException )
{
	// Attention:
	//	Don't use mutex or guard in this method!!! Is a method of XInterface.

	uno::Any aReturn;
	if ( m_bSeekable )
		aReturn = uno::Any( ::cppu::queryInterface( rType,
									   	static_cast< io::XStream* >( this ),
									   	static_cast< io::XInputStream* >( this ),
									   	static_cast< io::XSeekable* >( this ) ) );
	else
		aReturn = uno::Any( ::cppu::queryInterface( rType,
									   	static_cast< io::XStream* >( this ),
									   	static_cast< io::XInputStream* >( this ) ) );

	if ( aReturn.hasValue() == sal_True )
		return aReturn ;

	return ::cppu::OWeakObject::queryInterface( rType ) ;
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::acquire()
		throw()
{
	::cppu::OWeakObject::acquire();
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::release()
		throw()
{
	::cppu::OWeakObject::release();
}

//-----------------------------------------------
sal_Int32 SAL_CALL OFSInputStreamContainer::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) 
		throw ( io::NotConnectedException,
				io::BufferSizeExceededException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		throw uno::RuntimeException();

	return m_xInputStream->readBytes( aData, nBytesToRead );
}

//-----------------------------------------------
sal_Int32 SAL_CALL OFSInputStreamContainer::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) 
		throw ( io::NotConnectedException,
				io::BufferSizeExceededException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		throw uno::RuntimeException();

	return m_xInputStream->readSomeBytes( aData, nMaxBytesToRead );
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::skipBytes( sal_Int32 nBytesToSkip ) 
		throw ( io::NotConnectedException,
				io::BufferSizeExceededException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		throw uno::RuntimeException();

	m_xInputStream->skipBytes( nBytesToSkip );
}

//-----------------------------------------------
sal_Int32 SAL_CALL OFSInputStreamContainer::available(  ) 
		throw ( io::NotConnectedException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		throw uno::RuntimeException();

	return m_xInputStream->available();
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::closeInput(  ) 
		throw ( io::NotConnectedException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		throw uno::RuntimeException();

	dispose();
}

//-----------------------------------------------
uno::Reference< io::XInputStream > SAL_CALL OFSInputStreamContainer::getInputStream()
		throw ( uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		return uno::Reference< io::XInputStream >();

	return uno::Reference< io::XInputStream >( static_cast< io::XInputStream* >( this ), uno::UNO_QUERY );
}

//-----------------------------------------------
uno::Reference< io::XOutputStream > SAL_CALL OFSInputStreamContainer::getOutputStream()
		throw ( uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	return uno::Reference< io::XOutputStream >();
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::seek( sal_Int64 location )
		throw ( lang::IllegalArgumentException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xSeekable.is() )
		throw uno::RuntimeException();

	m_xSeekable->seek( location );
}

//-----------------------------------------------
sal_Int64 SAL_CALL OFSInputStreamContainer::getPosition()
		throw ( io::IOException, 
				uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xSeekable.is() )
		throw uno::RuntimeException();

	return m_xSeekable->getPosition();
}

//-----------------------------------------------
sal_Int64 SAL_CALL OFSInputStreamContainer::getLength()
		throw ( io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xSeekable.is() )
		throw uno::RuntimeException();

	return m_xSeekable->getLength();
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::dispose(  )
		throw ( uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_xInputStream.is() )
		throw uno::RuntimeException();

	m_xInputStream->closeInput();

	if ( m_pListenersContainer )
	{
    	lang::EventObject aSource( static_cast< ::cppu::OWeakObject*>( this ) );
		m_pListenersContainer->disposeAndClear( aSource );
	}

	m_bDisposed = sal_True;
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::addEventListener( const uno::Reference< lang::XEventListener >& xListener )
		throw ( uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( !m_pListenersContainer )
		m_pListenersContainer = new ::cppu::OInterfaceContainerHelper( m_aMutex );

	m_pListenersContainer->addInterface( xListener );
}

//-----------------------------------------------
void SAL_CALL OFSInputStreamContainer::removeEventListener( const uno::Reference< lang::XEventListener >& xListener )
		throw ( uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

	if ( m_bDisposed )
		throw lang::DisposedException();

	if ( m_pListenersContainer )
		m_pListenersContainer->removeInterface( xListener );
}