/**

 * Alt2XML

 * Copyright © 2014 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 cz.frantovo.alt2xml.cli;

import cz.frantovo.alt2xml.out.EchoContentHandler;

import java.io.File;

import java.io.OutputStream;

import java.util.Arrays;

import java.util.logging.Level;

import java.util.logging.Logger;

import javax.xml.parsers.SAXParser;

import javax.xml.parsers.SAXParserFactory;

import javax.xml.stream.XMLOutputFactory;

import javax.xml.stream.XMLStreamWriter;

import org.xml.sax.ext.LexicalHandler;

import org.xml.sax.helpers.DefaultHandler;

/**

 *

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

 */

public class CLI {

	public static final String LEXICAL_HANDLER_PROPERTY = "http://xml.org/sax/properties/lexical-handler";

	private static final Logger log = Logger.getLogger(CLI.class.getName());

	public static void main(String[] args) {

		try {

			File vstup = new File(args[0]);

			OutputStream výstup = System.out;

			/**

			 * Serializujeme data do XML.

			 * To normálně vůbec není potřeba – data se do tvaru proudu obsahujícího ostré závorky

			 * vůbec nedostanou – zpracováváme události (volání javovských metod – začátky a konce

			 * elementů atd.)

			 * a z nich např. deserializujeme nějaké naše objekty, provádíme nějaké akce, nebo třeba

			 * stavíme DOM.

			 */

			XMLOutputFactory xmlOutputFactory = XMLOutputFactory.newFactory();

			XMLStreamWriter w = xmlOutputFactory.createXMLStreamWriter(výstup);

			DefaultHandler h = new EchoContentHandler(w);

			SAXParserFactory t = SAXParserFactory.newInstance();

			SAXParser p = t.newSAXParser();

			if (h instanceof LexicalHandler

					// TODO: add option/feature to disable LexicalHandler registration

					&& false) {

				try {

					p.setProperty(LEXICAL_HANDLER_PROPERTY, h);

				} catch (Exception e) {

					log.log(Level.WARNING, "LexicalHandler registration exception:", e);

					log.log(Level.WARNING,

							"Tried to register the handler {0} as a LexicalHandler but LexicalHandlers are not supported by the parser {1}",

							new Object[]{h, p});

				}

			}

			p.parse(vstup, h);

		} catch (Exception e) {

			log.log(Level.SEVERE, "Error during processing: " + Arrays.toString(args), e);

		}

	}

}