/**

  * 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.out.xml;

 import java.util.logging.Logger;

 import javax.xml.stream.XMLStreamException;

 import javax.xml.stream.XMLStreamWriter;

 import org.xml.sax.Attributes;

 import org.xml.sax.SAXException;

 import org.xml.sax.helpers.DefaultHandler;

 /**

  * Slouží k převodu právě parsovaného XML zpět na XML.

  * Určen pro testování a ladění a pro použití s neobvyklými „XML“ parsery,

  * které nečtou XML ale jiný jazyk (např. JSON, INI atd.), ale používají stejné rozhraní (SAX).

  *

  * TODO: další typy uzlů a jmenné prostory.

  *

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

  */

 public class XMLHandler extends DefaultHandler {

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

 	private XMLStreamWriter w;

 	public XMLHandler(XMLStreamWriter writer) {

 		w = writer;

 	}

 	@Override

 	public void startDocument() throws SAXException {

 		try {

 			w.writeStartDocument();

 		} catch (XMLStreamException e) {

 			throw new SAXException(e);

 		}

 	}

 	@Override

 	public void endDocument() throws SAXException {

 		try {

 			w.writeEndDocument();

 			w.close();

 		} catch (XMLStreamException e) {

 			throw new SAXException(e);

 		}

 	}

 	@Override

 	public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {

 		try {

 			w.writeStartElement(qName);

 			if (attributes != null) {

 				for (int i = 0; i < attributes.getLength(); i++) {

 					w.writeAttribute(attributes.getQName(i), attributes.getValue(i));

 				}

 			}

 			w.flush();

 		} catch (XMLStreamException e) {

 			throw new SAXException(e);

 		}

 	}

 	@Override

 	public void endElement(String uri, String localName, String qName) throws SAXException {

 		try {

 			w.writeEndElement();

 			w.flush();

 		} catch (XMLStreamException e) {

 			throw new SAXException(e);

 		}

 	}

 	@Override

 	public void characters(char[] ch, int start, int length) throws SAXException {

 		try {

 			w.writeCharacters(ch, start, length);

 			w.flush();

 		} catch (XMLStreamException e) {

 			throw new SAXException(e);

 		}

 	}

 	/**

 	 * LexicalHandler methods

 	 *

 	 * @Override

 	 * public void startDTD(String name, String publicId, String systemId) throws SAXException {

 	 * log.log(Level.WARNING, "Start of DTD: {0} | {1} | {2}", new Object[]{name, publicId,

 	 * systemId});

 	 * }

 	 *

 	 * @Override

 	 * public void endDTD() throws SAXException {

 	 * log.log(Level.WARNING, "End of DTD");

 	 * }

 	 *

 	 * @Override

 	 * public void startEntity(String name) throws SAXException {

 	 * log.log(Level.WARNING, "Start of Entity: {0}", name);

 	 * }

 	 *

 	 * @Override

 	 * public void endEntity(String name) throws SAXException {

 	 * log.log(Level.WARNING, "End of Entity: {0}", name);

 	 * }

 	 *

 	 * @Override

 	 * public void startCDATA() throws SAXException {

 	 * log.log(Level.WARNING, "Start of CDATA");

 	 * }

 	 *

 	 * @Override

 	 * public void endCDATA() throws SAXException {

 	 * log.log(Level.WARNING, "End of CDATA");

 	 * }

 	 *

 	 * @Override

 	 * public void comment(char[] ch, int start, int length) throws SAXException {

 	 * try {

 	 * w.writeComment(new String(ch, start, length));

 	 * w.flush();

 	 * } catch (XMLStreamException e) {

 	 * throw new SAXException(e);

 	 * }

 	 * }

 	 */

 }