/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/


#ifndef _GVFSSTREAM_HXX_
#define _GVFSSTREAM_HXX_

#include <sal/types.h>
#include <rtl/ustring.hxx>
#include <cppuhelper/weak.hxx>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/io/XSeekable.hpp>

#include <libgnomevfs/gnome-vfs-handle.h>

namespace gvfs
{

class Stream : public ::com::sun::star::io::XStream,
	       public ::com::sun::star::io::XInputStream,
	       public ::com::sun::star::io::XOutputStream,
	       public ::com::sun::star::io::XTruncate,
	       public ::com::sun::star::io::XSeekable,
	       public ::cppu::OWeakObject
{
private:
	GnomeVFSHandle  *m_handle;
	GnomeVFSFileInfo m_info;
	osl::Mutex       m_aMutex;
	sal_Bool         m_eof;
	sal_Bool         m_bInputStreamCalled;
	sal_Bool         m_bOutputStreamCalled;

	void throwOnError( GnomeVFSResult result )
		throw( ::com::sun::star::io::NotConnectedException,
		       ::com::sun::star::io::BufferSizeExceededException,
		       ::com::sun::star::io::IOException,
		       ::com::sun::star::uno::RuntimeException );

	void closeStream( void )
		throw( ::com::sun::star::io::NotConnectedException,
		       ::com::sun::star::io::IOException,
		       ::com::sun::star::uno::RuntimeException );

public:
	Stream ( GnomeVFSHandle         *handle,
		 const GnomeVFSFileInfo *aInfo );
	virtual ~Stream();
	
	// XInterface
	virtual com::sun::star::uno::Any SAL_CALL queryInterface(const ::com::sun::star::uno::Type & type )
		throw( ::com::sun::star::uno::RuntimeException );
	virtual void SAL_CALL acquire( void )
		throw ()
			{ OWeakObject::acquire(); }
	virtual void SAL_CALL release( void )
		throw()
			{ OWeakObject::release(); }

	// XStream
	virtual com::sun::star::uno::Reference< com::sun::star::io::XInputStream > SAL_CALL getInputStream(  )
		throw( com::sun::star::uno::RuntimeException );
	
	virtual com::sun::star::uno::Reference< com::sun::star::io::XOutputStream > SAL_CALL getOutputStream(  )
		throw( com::sun::star::uno::RuntimeException );

	// XInputStream
	virtual sal_Int32 SAL_CALL readBytes(
	  		::com::sun::star::uno::Sequence< sal_Int8 > & aData,
			sal_Int32 nBytesToRead )
				throw( ::com::sun::star::io::NotConnectedException,
			   		   ::com::sun::star::io::BufferSizeExceededException,
			   		   ::com::sun::star::io::IOException,
			   		   ::com::sun::star::uno::RuntimeException );

	virtual sal_Int32 SAL_CALL readSomeBytes(
    		::com::sun::star::uno::Sequence< sal_Int8 > & aData,
			sal_Int32 nMaxBytesToRead )
        		throw( ::com::sun::star::io::NotConnectedException,
               		   ::com::sun::star::io::BufferSizeExceededException,
               		   ::com::sun::star::io::IOException,
               		   ::com::sun::star::uno::RuntimeException );

	virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip )
        		throw( ::com::sun::star::io::NotConnectedException,
               		   ::com::sun::star::io::BufferSizeExceededException,
               		   ::com::sun::star::io::IOException,
               		   ::com::sun::star::uno::RuntimeException );

	virtual sal_Int32 SAL_CALL available( void )
        		throw( ::com::sun::star::io::NotConnectedException,
               		   ::com::sun::star::io::IOException,
               		   ::com::sun::star::uno::RuntimeException );

	virtual void SAL_CALL closeInput( void )
        		throw( ::com::sun::star::io::NotConnectedException,
               		   ::com::sun::star::io::IOException,
               		   ::com::sun::star::uno::RuntimeException );

	// XSeekable
	virtual void SAL_CALL seek(	sal_Int64 location )
		throw( ::com::sun::star::lang::IllegalArgumentException,
			   ::com::sun::star::io::IOException,
			   ::com::sun::star::uno::RuntimeException );

	virtual sal_Int64 SAL_CALL getPosition()
		throw( ::com::sun::star::io::IOException,
			   ::com::sun::star::uno::RuntimeException );

	virtual sal_Int64 SAL_CALL getLength()
		throw( ::com::sun::star::io::IOException,
			   ::com::sun::star::uno::RuntimeException );

        // XOutputStream
	virtual void SAL_CALL writeBytes( const com::sun::star::uno::Sequence< sal_Int8 >& aData )
		throw( com::sun::star::io::NotConnectedException,
		       com::sun::star::io::BufferSizeExceededException,
		       com::sun::star::io::IOException,
		       com::sun::star::uno::RuntimeException);
        
	virtual void SAL_CALL flush( void )
		throw( com::sun::star::io::NotConnectedException,
		       com::sun::star::io::BufferSizeExceededException,
		       com::sun::star::io::IOException,
		       com::sun::star::uno::RuntimeException);
        
        
        virtual void SAL_CALL closeOutput( void )
		throw( com::sun::star::io::NotConnectedException,
		       com::sun::star::io::IOException,
		       com::sun::star::uno::RuntimeException );

	// XTruncate
	virtual void SAL_CALL truncate( void )
		throw( com::sun::star::io::IOException,
		       com::sun::star::uno::RuntimeException );
};

} // namespace gvfs
#endif // _GVFSSTREAM_HXX_