/*
 * (C) Copyright IBM Corp. 2004.  All rights reserved.
 *
 * US Government Users Restricted Rights Use, duplication or
 * disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 * The program is provided "as is" without any warranty express or
 * implied, including the warranty of non-infringement and the implied
 * warranties of merchantibility and fitness for a particular purpose.
 * IBM will not be liable for any damages suffered by you as a result
 * of using the Program. In no event will IBM be liable for any
 * special, indirect or consequential damages or lost profits even if
 * IBM has been advised of the possibility of their occurrence. IBM
 * will not be liable for any third party claims against you.
 */

package com.ibm.dw.xmlprogjava;

//import javax.xml.parsers.DocumentBuilder;
//import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * A DOM traversal program.  Given a DOM Node, the one static method
 * of this program prints the contents of the Node as XML.
 */

public class DomTreePrinter
{
  /** Prints the specified node, recursively. */
  public static void printNode(Node node) 
  {
    int type = node.getNodeType();
    switch (type)
    {
      // print the document element
      case Node.DOCUMENT_NODE: 
        {
          System.out.println("<?xml version=\"1.0\" ?>");
          printNode(((Document)node).getDocumentElement());
          break;
        }

         // print element and any attributes
      case Node.ELEMENT_NODE: 
        {
          System.out.print("<");
          System.out.print(node.getNodeName());

          if (node.hasAttributes())
          {          
            NamedNodeMap attrs = node.getAttributes();
            for (int i = 0; i < attrs.getLength(); i++)
              printNode(attrs.item(i));
          }
          System.out.print(">");

          if (node.hasChildNodes())
          {
            NodeList children = node.getChildNodes();
            for (int i = 0; i < children.getLength(); i++)
              printNode(children.item(i));
          }

          break;
        }

      // Print attribute nodes
      case Node.ATTRIBUTE_NODE:
        {
          System.out.print(" " + node.getNodeName() + "=\"");
          if (node.hasChildNodes())
          {
            NodeList children = node.getChildNodes();
            for (int i = 0; i < children.getLength(); i++)
              printNode(children.item(i));
          }
          System.out.print("\"");
          break;
        }

        // handle entity reference nodes
      case Node.ENTITY_REFERENCE_NODE: 
        {
          System.out.print("&");
          System.out.print(node.getNodeName());
          System.out.print(";");
          break;
        }

        // print cdata sections
      case Node.CDATA_SECTION_NODE: 
        {
          System.out.print("<![CDATA[");
          System.out.print(node.getNodeValue());
          System.out.print("]]>");
          break;
        }

        // print text
      case Node.TEXT_NODE: 
        {
          System.out.print(node.getNodeValue());
          break;
        }

      case Node.COMMENT_NODE:
        {
          System.out.print("<!--");
          System.out.print(node.getNodeValue());
          System.out.print("-->");
          break;
        }

        // print processing instruction
      case Node.PROCESSING_INSTRUCTION_NODE: 
        {
          System.out.print("<?");
          System.out.print(node.getNodeName());
          String data = node.getNodeValue();
          {
            System.out.print(" ");
            System.out.print(data);
          }
          System.out.print("?>");
          break;
        }
    }

    if (type == Node.ELEMENT_NODE)
    {
      System.out.print("</");
      System.out.print(node.getNodeName());
      System.out.print('>');
    }
  } // printNode(Node)
}