/**
* eAdventure (formerly <e-Adventure> and <e-Game>) is a research project of the
* <e-UCM> research group.
*
* Copyright 2005-2010 <e-UCM> research group.
*
* You can access a list of all the contributors to eAdventure at:
* http://e-adventure.e-ucm.es/contributors
*
* <e-UCM> is a research group of the Department of Software Engineering
* and Artificial Intelligence at the Complutense University of Madrid
* (School of Computer Science).
*
* C Profesor Jose Garcia Santesmases sn,
* 28040 Madrid (Madrid), Spain.
*
* For more info please visit: <http://e-adventure.e-ucm.es> or
* <http://www.e-ucm.es>
*
* ****************************************************************************
*
* This file is part of eAdventure, version 2.0
*
* eAdventure is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* eAdventure 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with eAdventure. If not, see <http://www.gnu.org/licenses/>.
*/
package es.eucm.ead.tools.java.xml;
import es.eucm.ead.tools.xml.XMLNode;
import es.eucm.ead.tools.xml.XMLParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerFactory;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
public class DomXMLParser implements XMLParser {
static private Logger logger = LoggerFactory.getLogger(DomXMLParser.class);
private DocumentBuilder dBuilder;
private TransformerFactory tf;
public DomXMLParser() {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
tf = TransformerFactory.newInstance();
try {
dBuilder = dbFactory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
}
}
@Override
public XMLNode parse(String xml) {
return parse(xml, null);
}
@Override
public XMLNode parse(String xml, ErrorHandler errorHandler) {
InputStream is = new ByteArrayInputStream(xml.getBytes());
try {
Document doc = dBuilder.parse(is);
doc.getDocumentElement().normalize();
return generateNode((Element) doc.getFirstChild());
} catch (SAXException e) {
if (errorHandler != null) {
errorHandler.error(e.getMessage());
} else {
logger.error("Error reading xml: {}", e);
}
} catch (IOException e) {
logger.error("Error reading xml: {}", e);
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
}
}
}
return null;
}
public XMLNode generateNode(Element n) {
XMLNode node = new XMLNode(n.getTagName());
node.setText(n.getTextContent());
NamedNodeMap atts = n.getAttributes();
for (int i = 0; i < atts.getLength(); i++) {
node.setAttribute(atts.item(i).getNodeName(), atts.item(i)
.getNodeValue());
}
NodeList nl = n.getChildNodes();
for (int i = 0; i < nl.getLength(); i++) {
XMLNode child = generateNode((Element) nl.item(i));
node.append(child);
}
return node;
}
}