DOMUtils.java :  » Game » aetheria » eu » irreality » age » util » xml » Java Open Source

/*
 * (c) 2005-2009 Carlos Gmez Rodrguez, todos los derechos reservados / all rights reserved.
 * Licencia en license/bsd.txt / License in license/bsd.txt
 */

/*
 * Created at regulus on 08-abr-2007 11:44:59
 * as file DOMUtils.java on package org.f2o.absurdum.puck.util.xml
 */
package eu.irreality.age.util.xml;

import java.io.StringReader;
import java.io.StringWriter;

import javax.swing.JOptionPane;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * @author carlos
 *
 * Created at regulus, 08-abr-2007 11:44:59
 */
public class DOMUtils 
{
  
  
  public static NodeList getDirectChildrenElementsByTagName ( Node n , String name )
  {
  
    ArrayNodeList theList = new ArrayNodeList();
    if ( !n.hasChildNodes() ) return theList;
    Node current = n.getFirstChild();
    do
    {
      if ( current instanceof Element )
      {
        Element curElt = (Element) current;
        if ( curElt.getTagName().equals(name) ) theList.add(curElt);
      }
      current = current.getNextSibling();
    } while ( current != null );
    
    return theList;
    
  }
  
  
  private static Document doc = null;
  

  public static Document getXMLClipboard ( )
  {
    if ( doc == null )
    {
      try 
      {
        doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
      } 
      catch (ParserConfigurationException e) 
      {
        e.printStackTrace();
        return null;
      }
    }
    return doc;
  }
  
  
  public static String nodeToString ( Node n )
  {
    DOMSource ds = new DOMSource(n);
    StringWriter sw = new StringWriter();
    StreamResult sr = new StreamResult ( sw );
    try
    {
      Transformer t = TransformerFactory.newInstance().newTransformer();
      t.setOutputProperty(OutputKeys.INDENT,"yes");
      t.transform(ds,sr);
    }
    catch ( TransformerException te )
    {
      te.printStackTrace();
    }
    return sw.getBuffer().toString();
  }
  
  public static Node stringToNode ( String s )
  {
    StreamSource ss = new StreamSource(new StringReader(s));
    DOMResult dr = new DOMResult();
    try
    {
      Transformer t = TransformerFactory.newInstance().newTransformer();
      t.transform(ss,dr);
    }
    catch ( TransformerException te )
    {
      te.printStackTrace();
      return null;
    }
    return dr.getNode().getFirstChild();
  }
  
}