/*
 * This file is part of "SnipSnap Radeox Rendering Engine".
 *
 * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
 * All Rights Reserved.
 *
 * Please visit http://radeox.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * Licensed 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.
 * --LICENSE NOTICE--
 */

package org.radeox.macro;

import java.io.IOException;
import java.io.Writer;

import org.radeox.macro.parameter.MacroParameter;

/*
 * Macro to easily link to RFCs. The website to link to is currently hard wired.
 * @author stephan @team sonicteam
 * 
 * @version $Id: RfcMacro.java 7756 2006-04-13 12:25:49Z ian@caret.cam.ac.uk $
 */

public class RfcMacro extends BaseLocaleMacro
{

	public String getLocaleKey()
	{
		return "macro.rfc";
	}

	public void execute(Writer writer, MacroParameter params)
			throws IllegalArgumentException, IOException
	{

		if (params.getLength() == 1)
		{
			String number = params.get("0");
			String view = "RFC" + number;
			// ftp://ftp.rfc-editor.org/in-notes/rfc3300.txt
			// http://zvon.org/tmRFC/RFC3300/Output/index.html
			appendRfc(writer, number, view);
			return;
		}
		else if (params.getLength() == 2)
		{
			String number = params.get(0);
			String view = params.get(1);
			appendRfc(writer, number, view);
		}
		else
		{
			throw new IllegalArgumentException("needs an RFC numer as argument");
		}
	}

	public void appendRfc(Writer writer, String number, String view)
			throws IOException, IllegalArgumentException
	{
		// writer.write("<a href=\"ftp://ftp.rfc-editor.org/in-notes/rfc");
		try
		{

			Integer dummy = Integer.getInteger(number);
		}
		catch (Exception e)
		{
			throw new IllegalArgumentException();
		}
		writer.write("<a href=\"http://zvon.org/tmRFC/RFC");
		writer.write(number);
		writer.write("/Output/index.html\">");
		writer.write(view);
		writer.write("</a>");
		return;
	}
}
