/**************************************************************
 * 
 * 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
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svl.hxx"

#include "ostreamcontainer.hxx"


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

//-----------------------------------------------
OFSStreamContainer::OFSStreamContainer( const uno::Reference < io::XStream >& xStream )
: m_bDisposed( sal_False )
, m_bInputClosed( sal_False )
, m_bOutputClosed( sal_False )
, m_pListenersContainer( NULL )
, m_pTypeCollection( NULL )
{
	try
	{
		m_xStream = xStream;
		if ( !m_xStream.is() )
			throw uno::RuntimeException();

		m_xSeekable = uno::Reference< io::XSeekable >( xStream, uno::UNO_QUERY );
		m_xInputStream = xStream->getInputStream();
		m_xOutputStream = xStream->getOutputStream();
		m_xTruncate = uno::Reference< io::XTruncate >( m_xOutputStream, uno::UNO_QUERY );
		m_xAsyncOutputMonitor = uno::Reference< io::XAsyncOutputMonitor >( m_xOutputStream, uno::UNO_QUERY );
	}
	catch( uno::Exception& )
	{
		m_xStream = uno::Reference< io::XStream >();
		m_xSeekable = uno::Reference< io::XSeekable >();
		m_xInputStream = uno::Reference< io::XInputStream >();
		m_xOutputStream = uno::Reference< io::XOutputStream >();
		m_xTruncate = uno::Reference< io::XTruncate >();
		m_xAsyncOutputMonitor = uno::Reference< io::XAsyncOutputMonitor >();
	}
}

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

// XInterface
//-----------------------------------------------
uno::Any SAL_CALL OFSStreamContainer::queryInterface( const uno::Type& rType )
		throw( uno::RuntimeException )
{
	uno::Any aReturn;

	aReturn <<= ::cppu::queryInterface
				(	rType
					,	static_cast<lang::XTypeProvider*> ( this )
					,	static_cast<io::XStream*> ( this )
					,	static_cast<embed::XExtendedStorageStream*> ( this )
					,	static_cast<lang::XComponent*> ( this ) );

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

	if ( m_xSeekable.is() )
	{
		aReturn <<= ::cppu::queryInterface
				(	rType
					,	static_cast<io::XSeekable*> ( this ) );

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

	if ( m_xInputStream.is() )
	{
		aReturn <<= ::cppu::queryInterface
				(	rType
					,	static_cast<io::XInputStream*> ( this ) );

		if ( aReturn.hasValue() == sal_True )
			return aReturn ;
	}
	if ( m_xOutputStream.is() )
	{
		aReturn <<= ::cppu::queryInterface
				(	rType
					,	static_cast<io::XOutputStream*> ( this ) );

		if ( aReturn.hasValue() == sal_True )
			return aReturn ;
	}
	if ( m_xTruncate.is() )
	{
		aReturn <<= ::cppu::queryInterface
				(	rType
					,	static_cast<io::XTruncate*> ( this ) );

		if ( aReturn.hasValue() == sal_True )
			return aReturn ;
	}
	if ( m_xAsyncOutputMonitor.is() )
	{
		aReturn <<= ::cppu::queryInterface
				(	rType
					,	static_cast<io::XAsyncOutputMonitor*> ( this ) );

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

	return OWeakObject::queryInterface( rType );
}

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

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

//	XTypeProvider
//-----------------------------------------------
uno::Sequence< uno::Type > SAL_CALL OFSStreamContainer::getTypes()
		throw( uno::RuntimeException )
{
	if ( m_pTypeCollection == NULL )
	{
		::osl::MutexGuard aGuard( m_aMutex );

		if ( m_pTypeCollection == NULL )
		{
			::cppu::OTypeCollection aTypeCollection
									(	::getCppuType( ( const uno::Reference< lang::XTypeProvider >* )NULL )
									,	::getCppuType( ( const uno::Reference< embed::XExtendedStorageStream >* )NULL ) );

			if ( m_xSeekable.is() )
				aTypeCollection = ::cppu::OTypeCollection
									(	::getCppuType( ( const uno::Reference< io::XSeekable >* )NULL ),
										aTypeCollection.getTypes() );
			if ( m_xInputStream.is() )
				aTypeCollection = ::cppu::OTypeCollection
									(	::getCppuType( ( const uno::Reference< io::XInputStream >* )NULL ),
										aTypeCollection.getTypes() );

			if ( m_xOutputStream.is() )
				aTypeCollection = ::cppu::OTypeCollection
									(	::getCppuType( ( const uno::Reference< io::XOutputStream >* )NULL ),
										aTypeCollection.getTypes() );
			if ( m_xTruncate.is() )
				aTypeCollection = ::cppu::OTypeCollection
									(	::getCppuType( ( const uno::Reference< io::XTruncate >* )NULL ),
										aTypeCollection.getTypes() );
			if ( m_xAsyncOutputMonitor.is() )
				aTypeCollection = ::cppu::OTypeCollection
									(	::getCppuType( ( const uno::Reference< io::XAsyncOutputMonitor >* )NULL ),
										aTypeCollection.getTypes() );

			m_pTypeCollection = new ::cppu::OTypeCollection( aTypeCollection );
		}
	}
	return m_pTypeCollection->getTypes() ;
}

//-----------------------------------------------
uno::Sequence< sal_Int8 > SAL_CALL OFSStreamContainer::getImplementationId()
		throw( uno::RuntimeException )
{
	static ::cppu::OImplementationId* pID = NULL ;

	if ( pID == NULL )
	{
		::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex() ) ;

		if ( pID == NULL )
		{
			static ::cppu::OImplementationId aID( sal_False ) ;
			pID = &aID ;
		}
	}

	return pID->getImplementationId() ;
}

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

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

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

	if ( m_xInputStream.is() )
		return uno::Reference< io::XInputStream >( static_cast< io::XInputStream* >( this ) );

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

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

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

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

	if ( m_xOutputStream.is() )
		return uno::Reference< io::XOutputStream >( static_cast< io::XOutputStream* >( this ) );

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

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

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

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

	if ( m_xInputStream.is() && !m_bInputClosed )
	{
		m_xInputStream->closeInput();
		m_bInputClosed = sal_True;
	}

	if ( m_xOutputStream.is() && !m_bOutputClosed )
	{
		m_xOutputStream->closeOutput();
		m_bOutputClosed = sal_True;
	}

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

	m_bDisposed = sal_True;
}

//-----------------------------------------------
void SAL_CALL OFSStreamContainer::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 OFSStreamContainer::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 );
}


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

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

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

	m_xSeekable->seek( location );
}

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

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

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

	return m_xSeekable->getPosition();
}

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

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

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

	return m_xSeekable->getLength();
}


// XInputStream
//-----------------------------------------------
sal_Int32 SAL_CALL OFSStreamContainer::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_xStream.is() || !m_xInputStream.is() )
		throw uno::RuntimeException();

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

//-----------------------------------------------
sal_Int32 SAL_CALL OFSStreamContainer::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_xStream.is() || !m_xInputStream.is() )
		throw uno::RuntimeException();

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

//-----------------------------------------------
void SAL_CALL OFSStreamContainer::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_xStream.is() || !m_xInputStream.is() )
		throw uno::RuntimeException();

	m_xInputStream->skipBytes( nBytesToSkip );
}

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

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

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

	return m_xInputStream->available();
}

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

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

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

	if ( m_xInputStream.is() )
	{
		m_xInputStream->closeInput();
		m_bInputClosed = sal_True;
	}

	if ( m_bOutputClosed )
		dispose();
}

// XOutputStream
//-----------------------------------------------
void SAL_CALL OFSStreamContainer::writeBytes( const uno::Sequence< sal_Int8 >& aData )
		throw ( io::NotConnectedException,
				io::BufferSizeExceededException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

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

	if ( !m_xStream.is() || !m_xOutputStream.is() )
		throw uno::RuntimeException();

	return m_xOutputStream->writeBytes( aData );
}

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

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

	if ( !m_xStream.is() || !m_xOutputStream.is() )
		throw uno::RuntimeException();

	return m_xOutputStream->flush();
}

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

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

	if ( !m_xStream.is() || !m_xOutputStream.is() )
		throw uno::RuntimeException();

	if ( m_xOutputStream.is() )
	{
		m_xOutputStream->closeOutput();
		m_bOutputClosed = sal_True;
	}

	if ( m_bInputClosed )
		dispose();
}


// XTruncate
//-----------------------------------------------
void SAL_CALL OFSStreamContainer::truncate()
		throw ( io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

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

	if ( !m_xStream.is() || !m_xTruncate.is() )
		throw uno::RuntimeException();

	m_xTruncate->truncate();
}


// XAsyncOutputMonitor
//-----------------------------------------------
void SAL_CALL OFSStreamContainer::waitForCompletion()
		throw ( io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_aMutex );

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

	if ( !m_xStream.is() || !m_xAsyncOutputMonitor.is() )
		throw uno::RuntimeException();

	m_xAsyncOutputMonitor->waitForCompletion();
}