/*
 * 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 _LOG4CXX_HELPERS_OUTPUTSTREAM_H
#define _LOG4CXX_HELPERS_OUTPUTSTREAM_H

#include <log4cxx/helpers/objectimpl.h>
#ifdef LOG4CXX_MULTI_PROCESS
	#include <apr_file_io.h>
#endif

namespace log4cxx
{

namespace helpers
{
class ByteBuffer;

/**
*   Abstract class for writing to character streams.
*/
class LOG4CXX_EXPORT OutputStream : public ObjectImpl
{
	public:
		DECLARE_ABSTRACT_LOG4CXX_OBJECT(OutputStream)
		BEGIN_LOG4CXX_CAST_MAP()
		LOG4CXX_CAST_ENTRY(OutputStream)
		END_LOG4CXX_CAST_MAP()

	protected:
		OutputStream();
		virtual ~OutputStream();

	public:
		virtual void close(Pool& p) = 0;
		virtual void flush(Pool& p) = 0;
		virtual void write(ByteBuffer& buf, Pool& p) = 0;
#ifdef LOG4CXX_MULTI_PROCESS
		virtual apr_file_t* getFilePtr();
		virtual OutputStream& getFileOutPutStreamPtr();
#endif

	private:
		OutputStream(const OutputStream&);
		OutputStream& operator=(const OutputStream&);
};

LOG4CXX_PTR_DEF(OutputStream);
} // namespace helpers

}  //namespace log4cxx

#endif //_LOG4CXX_HELPERS_OUTPUTSTREAM_H