AOO410/main/package/source/xstor/oseekinstream.cxx

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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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 * with the License.  You may obtain a copy of the License at
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_package.hxx"
#include <com/sun/star/lang/DisposedException.hpp>
#include <cppuhelper/typeprovider.hxx>
#include <osl/diagnose.h>

#include "oseekinstream.hxx"
#include "owriteablestream.hxx"

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

OInputSeekStream::OInputSeekStream( OWriteStream_Impl& pImpl,
									uno::Reference < io::XInputStream > xStream,
									const uno::Sequence< beans::PropertyValue >& aProps,
									sal_Int32 nStorageType )
: OInputCompStream( pImpl, xStream, aProps, nStorageType )
{
	if ( m_xStream.is() )
	{
		m_xSeekable = uno::Reference< io::XSeekable >( m_xStream, uno::UNO_QUERY );
		OSL_ENSURE( m_xSeekable.is(), "No seeking support!\n" );
	}
}

OInputSeekStream::OInputSeekStream( uno::Reference < io::XInputStream > xStream,
									const uno::Sequence< beans::PropertyValue >& aProps,
									sal_Int32 nStorageType )
: OInputCompStream( xStream, aProps, nStorageType )
{
	if ( m_xStream.is() )
	{
		m_xSeekable = uno::Reference< io::XSeekable >( m_xStream, uno::UNO_QUERY );
		OSL_ENSURE( m_xSeekable.is(), "No seeking support!\n" );
	}
}

OInputSeekStream::~OInputSeekStream()
{
}

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

	if ( pTypeCollection == NULL )
	{
		::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() ) ;

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

			pTypeCollection = &aTypeCollection ;
		}
	}

	return pTypeCollection->getTypes() ;
}

uno::Any SAL_CALL OInputSeekStream::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( ::cppu::queryInterface( rType,
									   	static_cast< io::XSeekable* >( this ) ) );

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

	return OInputCompStream::queryInterface( rType ) ;
}

void SAL_CALL OInputSeekStream::acquire()
		throw()
{
	OInputCompStream::acquire();
}

void SAL_CALL OInputSeekStream::release()
		throw()
{
	OInputCompStream::release();
}


void SAL_CALL OInputSeekStream::seek( sal_Int64 location )
		throw ( lang::IllegalArgumentException,
				io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
	if ( m_bDisposed )
    {
		::package::StaticAddLog( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX "Disposed!" ) ) );
		throw lang::DisposedException();
    }

	if ( !m_xSeekable.is() )
    {
		::package::StaticAddLog( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX "No seekable!" ) ) );
		throw uno::RuntimeException();
    }

	m_xSeekable->seek( location );
}

sal_Int64 SAL_CALL OInputSeekStream::getPosition()
		throw ( io::IOException, 
				uno::RuntimeException)
{
	::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
	if ( m_bDisposed )
    {
		::package::StaticAddLog( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX "Disposed!" ) ) );
		throw lang::DisposedException();
    }

	if ( !m_xSeekable.is() )
    {
		::package::StaticAddLog( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX "No seekable!" ) ) );
		throw uno::RuntimeException();
    }

	return m_xSeekable->getPosition();
}

sal_Int64 SAL_CALL OInputSeekStream::getLength()
		throw ( io::IOException,
				uno::RuntimeException )
{
	::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
	if ( m_bDisposed )
    {
		::package::StaticAddLog( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX "Disposed!" ) ) );
		throw lang::DisposedException();
    }

	if ( !m_xSeekable.is() )
    {
		::package::StaticAddLog( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( OSL_LOG_PREFIX "No seekable!" ) ) );
		throw uno::RuntimeException();
    }

	return m_xSeekable->getLength();
}