/*
 * 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_BYTEARRAYINPUTSTREAM_H
#define _LOG4CXX_HELPERS_BYTEARRAYINPUTSTREAM_H

#if defined(_MSC_VER)
	#pragma warning ( push )
	#pragma warning ( disable: 4231 4251 4275 4786 )
#endif


#include <vector>
#include <log4cxx/helpers/inputstream.h>


namespace log4cxx
{

namespace helpers
{
LOG4CXX_LIST_DEF(ByteList, unsigned char);

/**
 * InputStream implemented on top of a byte array.
 */
class LOG4CXX_EXPORT ByteArrayInputStream : public InputStream
{
	private:
		ByteList buf;
		size_t pos;

	public:
		DECLARE_ABSTRACT_LOG4CXX_OBJECT(ByteArrayInputStream)
		BEGIN_LOG4CXX_CAST_MAP()
		LOG4CXX_CAST_ENTRY(ByteArrayInputStream)
		LOG4CXX_CAST_ENTRY_CHAIN(InputStream)
		END_LOG4CXX_CAST_MAP()

		/**
		 * Creates a ByteArrayInputStream.
		 *
		 * @param bytes array of bytes to copy into stream.
		 */
		ByteArrayInputStream(const ByteList& bytes);

		virtual ~ByteArrayInputStream();

		/**
		 * Closes this file input stream and releases any system
		 * resources associated with the stream.
		 */
		virtual void close();

		/**
		 * Reads a sequence of bytes into the given buffer.
		 *
		 * @param buf The buffer into which bytes are to be transferred.
		 * @return the total number of bytes read into the buffer, or -1 if there
		 *         is no more data because the end of the stream has been reached.
		 */
		virtual int read(ByteBuffer& buf);

	private:

		ByteArrayInputStream(const ByteArrayInputStream&);

		ByteArrayInputStream& operator=(const ByteArrayInputStream&);

};

LOG4CXX_PTR_DEF(ByteArrayInputStream);
} // namespace helpers

}  //namespace log4cxx

#if defined(_MSC_VER)
	#pragma warning ( pop )
#endif

#endif //_LOG4CXX_HELPERS_BYTEARRAYINPUTSTREAM_H
