//  JAXP APIs qu'on utilise
import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory;  
import javax.xml.parsers.FactoryConfigurationError;  
import javax.xml.parsers.ParserConfigurationException;
// les exceptions pouvant etre levees
import org.xml.sax.SAXException;  
import org.xml.sax.SAXParseException;  
// inputs/outputs
import java.io.File;
import java.io.IOException;
// les definitions W3C pour DOM et les exceptions DOM
import org.w3c.dom.*;

public class SimpleDomParser {

    static final String[] typeName = {
        "none",
        "Element",
        "Attr",
        "Text",
        "CDATA",
        "EntityRef",
        "Entity",
        "ProcInstr",
        "Comment",
        "Document",
        "DocType",
        "DocFragment",
        "Notation",
    };

    public static void main(String argv[]) {
        DocumentBuilderFactory factory =
            DocumentBuilderFactory.newInstance();
	//
	// si on veut valider le document par rapport a 
	// sa declaration de type
	//
        // factory.setValidating(true);   
        // factory.setNamespaceAware(true);
	//
        try {
	    DocumentBuilder builder = factory.newDocumentBuilder();
	    // C'est ici que se fait le parsing
	    Document document = builder.parse(new File(argv[0]));
	    // Parcours et affichage du document
	    walk_the_tree(document, 0);
	} catch (SAXException sxe) {
	    // Capture des erreurs de parsing
	    Exception  x = sxe;
	    if (sxe.getException() != null)
		x = sxe.getException();
	    x.printStackTrace();
        } catch (ParserConfigurationException pce) {
            // Capture des erreurs de configuration
            pce.printStackTrace();
        } catch (IOException ioe) {
	    // I/O error
	    ioe.printStackTrace();
        }
    }

    /////////////////////////////////////////////////////////////

    public static void walk_the_tree(Node domNode, int depth) {
	String s = typeName[domNode.getNodeType()];
	String nodeName = domNode.getNodeName();
	if (! nodeName.startsWith("#")) {
	    s += "  " + nodeName;
	}
	if (domNode.getNodeValue() != null) 
	    { 
		if (! "".equals(domNode.getNodeValue().trim()))
		    {
			s += " = " + domNode.getNodeValue().trim(); 
			for (int i = 0; i < depth; i++)
			    s = "-" + s;
			System.out.println(s);
		    }
	    } else {
		for (int i = 0; i < depth; i++)
		    s = "-" + s;
		System.out.println(s);
		NamedNodeMap attrs = domNode.getAttributes();
		if (attrs != null) {
		    // un attribut peut contenir des entites ..
		    for (int i = 0; i < attrs.getLength(); i++)
			walk_the_tree(attrs.item(i), depth+1);
		}
	    }
	NodeList child = domNode.getChildNodes();
	for (int i = 0; i < child.getLength(); i++)
	    walk_the_tree(child.item(i), depth+1);
    }
}