import java.io.IOException;
import org.xml.sax.XMLReader;
import org.xml.sax.SAXException;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.Attributes;
import org.apache.xerces.parsers.SAXParser;

import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXParseException;

class MyErrorHandler implements ErrorHandler {
  public void error(SAXParseException exception) {
    System.out.println("SAX nonfatal error: " + exception.getMessage());
  }
  public void fatalError(SAXParseException exception) {
    System.out.println("SAX fatal error: " + exception.getMessage());
  }
  public void warning(SAXParseException exception) {
    System.out.println("SAX warning: " + exception.getMessage());
  }
}

class MyContentHandler implements ContentHandler {
  private int level = 0;
  public static void indent(int llevel) {
    for(int i=0; i < llevel; i++) {System.out.print("  ");}
  }

  // Receive notification of character data. 
  public void characters(char[] ch, int start, int length) {
    String s = new String(ch, start, length);
    if (s.trim() != "") {
      indent(level + 1);
      System.out.print("TEXT : noname : ");
      System.out.println(s);
    }
  }
  
  // Receive notification of the end of a document. 
  public void endDocument() {
    indent(level);
    System.out.println("endDocument()");
  }
  
  // Receive notification of the end of an element.
  public void endElement(java.lang.String namespaceURI, 
                  java.lang.String localName,
                  java.lang.String qName) {
    level--;
    indent(level);
    System.out.println("endElement(namespaceURI=" + namespaceURI +  
                  ",localName=" + localName +
                  ",qName=" + qName +")");
  }
  
  // End the scope of a prefix-URI mapping.
  public void endPrefixMapping(java.lang.String prefix) {
    indent(level);
    System.out.println("endPrefixMapping(prefix=" + prefix +")");
  }
  
  // Receive notification of ignorable whitespace in element content.
  public void ignorableWhitespace(char[] ch, int start, int length) {
    indent(level);
    String s = new String(ch, start, length);
    System.out.println("ignorableWhitespace(string=" + s + ")");
  }
  
  // Receive notification of a processing instruction.
  public void processingInstruction(java.lang.String target, java.lang.String data) {
    indent(level);
    System.out.println("processingInstruction(target=" + target +
                       ",data=" + data + ")");
  }
  
  // Receive an object for locating the origin of SAX document events.
  public void setDocumentLocator(Locator locator) {
    indent(level);
    System.out.println("setDocumentLocator()");
  }
  
  // Receive notification of a skipped entity.
  public void skippedEntity(java.lang.String name) {
    indent(level);
    System.out.println("skippedEntity(name=" + name + ")");
  }
  
  // Receive notification of the beginning of a document.
  public void startDocument() {
    indent(level);
    System.out.println("startDocument()");
  }
  
  // Receive notification of the beginning of an element.
  public void startElement(java.lang.String namespaceURI,
                    java.lang.String localName,
                    java.lang.String qName,
                    Attributes atts) {
    indent(level);
    System.out.print("ELEMENT : ");
    System.out.print(localName);
    System.out.print(" : novalue : ");
    System.out.print("(");
    for(int i=0; i < atts.getLength(); i++) {
      if(i > 0) {System.out.print(",");}
      System.out.print(atts.getLocalName(i) + "=\"" +
                       atts.getValue(i) + "\"");
    }
    System.out.print(")");
    System.out.println();
    level++;
  }
  
  // Begin the scope of a prefix-URI Namespace mapping.
  public void startPrefixMapping(java.lang.String prefix,
                          java.lang.String uri) {
    indent(level);
    System.out.println("startPrefixMapping(prefix=" + prefix +
                       ",uri=" + uri + ")");
  }
}

class Hello {
  public static void main(String[] args) {
    System.out.println("parsing " + args[0] + "... ");
    try {
      XMLReader parser = new SAXParser();    
      ContentHandler handler = new MyContentHandler();
      parser.setContentHandler(handler);
      ErrorHandler errHandler = new MyErrorHandler();
      parser.setErrorHandler(errHandler);
      parser.parse(args[0]);
    } catch (IOException e) {
      System.out.print("IO Exception: " + e.getMessage());
    } catch (SAXException e) {
      System.out.print("SAX Exception: " + e.getMessage());
    }
    System.out.println("Done!");
  }
}