/**

 * parameter-lister

 * Copyright © 2015 František Kučera (frantovo.cz)

 *

 * 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 info.glogalcode.parameterLister.modules;

import info.glogalcode.parameterLister.OutputModule;

import info.glogalcode.parameterLister.OutputModuleException;

import java.io.OutputStream;

import java.io.PrintWriter;

import java.util.List;

/**

 * Just a simple XML output.

 * For more complex documents, use {@linkplain javax.xml.stream.XMLStreamWriter}

 *

 * @author Ing. František Kučera (frantovo.cz)

 */

public class XmlModule implements OutputModule {

	@Override

	public void process(OutputStream output, List<String> parameters) throws OutputModuleException {

		try (PrintWriter out = new PrintWriter(output)) {

			out.println("<parameters>");

			for (String parameter : parameters) {

				out.print("\t<parameter>");

				out.print(escapeXmlText(parameter));

				out.println("</parameter>");

				out.flush();

			}

			out.println("</parameters>");

		}

	}

	/**

	 * @param s original text

	 * @return escaped text that can be safely concatenated between two XML tags (not safe for

	 * attribute

	 * values)

	 */

	private static String escapeXmlText(String s) {

		return s.replaceAll("&", "&amp;").replaceAll("<", "&lt;").replaceAll(">", "&gt;");

	}

}