XercesParser.java :  » Game » CyberLink » org » cybergarage » xml » parser » Java Open Source

/******************************************************************
*
*  CyberXML for Java
*
*  Copyright (C) Satoshi Konno 2002
*
*  File: XercesParser.java
*
*  Revision;
*
*  11/26/02
*    - first revision.
*  12/26/03
*    - Changed to the file name from Parser.java to XercesParser.java.
*    - Changed to implement org.cybergarage.xml.Parser interface.
*  02/09/05
*    - Stefano Lenzi <kismet-sl@users.sourceforge.net>
*    - Fixed a bug in XercesParser::parse(Node,Node,int) that is when you faound an xml like that <test></test> 
*      you crate a node with name="test" and value=null that is non correct. It should had name="test" and value="". 
*
******************************************************************/

package org.cybergarage.xml.parser;

import java.io.*;

import org.w3c.dom.*;
import org.xml.sax.*;
import org.apache.xerces.parsers.DOMParser;

import org.cybergarage.xml.*;

public class XercesParser extends org.cybergarage.xml.Parser
{
  ////////////////////////////////////////////////
  //  Constructor
  ////////////////////////////////////////////////

  public XercesParser()
  {
  }

  ////////////////////////////////////////////////
  //  parse (Node)
  ////////////////////////////////////////////////

  public org.cybergarage.xml.Node parse(org.cybergarage.xml.Node parentNode, org.w3c.dom.Node domNode, int rank)
  {
    int domNodeType = domNode.getNodeType();
//    if (domNodeType != Node.ELEMENT_NODE)
//      return;
      
    String domNodeName = domNode.getNodeName();
    String domNodeValue = domNode.getNodeValue();
    NamedNodeMap attrs = domNode.getAttributes(); 
    int arrrsLen = (attrs != null) ? attrs.getLength() : 0;

//    Debug.message("[" + rank + "] ELEM : " + domNodeName + ", " + domNodeValue + ", type = " + domNodeType + ", attrs = " + arrrsLen);

    if (domNodeType == org.w3c.dom.Node.TEXT_NODE) {
      parentNode.setValue(domNodeValue);
      return parentNode;
    }

    if (domNodeType != org.w3c.dom.Node.ELEMENT_NODE)
      return parentNode;

    org.cybergarage.xml.Node node = new org.cybergarage.xml.Node();
    node.setName(domNodeName);
    node.setValue(domNodeValue);

    if (parentNode != null)
      parentNode.addNode(node);

    NamedNodeMap attrMap = domNode.getAttributes(); 
    int attrLen = attrMap.getLength();
    //Debug.message("attrLen = " + attrLen);
    for (int n = 0; n<attrLen; n++) {
      org.w3c.dom.Node attr = attrMap.item(n);
      String attrName = attr.getNodeName();
      String attrValue = attr.getNodeValue();
      node.setAttribute(attrName, attrValue);
    }
    
    // Thanks for Stefano Lenzi (02/10/05)
    org.w3c.dom.Node child = domNode.getFirstChild(); 
    if(child==null){ 
      node.setValue(""); 
      return node; 
    } 
    do{ 
      parse(node, child, rank+1); 
      child = child.getNextSibling();  
    }while (child != null); 

    
    return node;
  }

  public org.cybergarage.xml.Node parse(org.cybergarage.xml.Node parentNode, org.w3c.dom.Node domNode)
  {
    return parse(parentNode, domNode, 0);
  }
  
  ////////////////////////////////////////////////
  //  parse
  ////////////////////////////////////////////////

  public org.cybergarage.xml.Node parse(InputStream inStream) throws ParserException
  {
    org.cybergarage.xml.Node root = null;
    
    try {
      DOMParser parser = new DOMParser();
      InputSource inSrc = new InputSource(inStream);
      parser.parse(inSrc);

      Document doc = parser.getDocument();
      org.w3c.dom.Element docElem = doc.getDocumentElement();

      if (docElem != null)
        root = parse(root, docElem);
/*
      NodeList rootList = doc.getElementsByTagName("root");
      Debug.message("rootList = " + rootList.getLength());
      
      if (0 < rootList.getLength())
        root = parse(root, rootList.item(0));
*/
    }
    catch (Exception e) {
      throw new ParserException(e);
    }
    
    return root;
  }
  
}