/**
 * Example of an error handler which prints out the error message
 * along with line and column number
 *
 * @author Nauman Chaudhry
 * 04/09/07
 */

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.XMLReaderFactory;

public class Ex3ErrorHandler extends DefaultHandler {
	public static void main(String[] args){
		try{
			XMLReader xmlReader = XMLReaderFactory.createXMLReader();
			xmlReader.setFeature(VALIDATION_FEATURE_URI, true);
			Ex3ErrorHandler handler = new Ex3ErrorHandler();
			xmlReader.setContentHandler(handler);
			xmlReader.setErrorHandler(handler);
			xmlReader.parse(args[0]);
		}catch(Exception e){
			e.printStackTrace();
		}
	}

	public void warning(SAXParseException e) throws SAXException
	{
		System.out.println("***** Warning: " + e.getMessage() +
				" at: " + e.getLineNumber() + " " + e.getColumnNumber());
	}


	public void error(SAXParseException e) throws SAXException
	{
		System.out.println("***** Error: " + e.getMessage()
				+ " at: " + e.getLineNumber() + " "
				+ e.getColumnNumber());
	}

	public void fatalEror(SAXParseException e) throws SAXException
	{
		System.out.println("****** FatalError: " + e.getMessage()
				+ " at: " + e.getLineNumber() + " "
				+ e.getColumnNumber());
	}


	public void startDocument() throws SAXException{
		System.out.println("Start document");
	}

	public void endDocument() throws SAXException{
		System.out.println("End document");
	}
	
	public void startElement(String namespaceURI, String localName,
					String qualName, Attributes atts){
		System.out.println("startElement:\t" + qualName);

	}

	public void endElement(String namespaceURI, String localName,
					String qualName){
		System.out.println("endElement:\t" + qualName);

	}


   	public void characters(char[] charData, int start, int length)
		throws SAXException {
		System.out.println("content:\t" + new String(charData, start, length));
	}

	private static String VALIDATION_FEATURE_URI =
			"http://xml.org/sax/features/validation";
}