/*

 *   SONEWS News Server

 *   see AUTHORS for the list of contributors

 *

 *   This program is free software: you can redistribute it and/or modify

 *   it under the terms of the GNU General Public License as published by

 *   the Free Software Foundation, either version 3 of the License, or

 *   (at your option) any later version.

 *

 *   This program is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *   GNU General Public License for more details.

 *

 *   You should have received a copy of the GNU General Public License

 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

package org.sonews.daemon.command;

import java.io.IOException;

import org.sonews.daemon.NNTPConnection;

/**

 * A default "Unsupported Command". Simply returns error code 500 and a

 * "command not supported" message.

 * @author Christian Lins

 * @since sonews/0.5.0

 */

public class UnsupportedCommand implements Command

{

	/**

	 * @return Always returns null.

	 */

	@Override

	public String[] getSupportedCommandStrings()

	{

		return null;

	}

	@Override

	public boolean hasFinished()

	{

		return true;

	}

	@Override

	public String impliedCapability()

	{

		return null;

	}

	@Override

	public boolean isStateful()

	{

		return false;

	}

	@Override

	public void processLine(NNTPConnection conn, final String line, byte[] raw)

		throws IOException

	{

		conn.println("500 command not supported");

	}

}