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/*   http://www.oreilly.com/catalog/sax2/

 * SAX2

 *   By David Brownell

 *   First Edition January 2002

 *   ISBN: 0-596-00237-8

 */





 import gnu.xml.util.Resolver;

import java.io.File;

import java.util.Hashtable;

import org.xml.sax.*;

import org.xml.sax.helpers.XMLReaderFactory;

import RssChannel.RssItem;



/**

 * RSS Data Dump

 */

public class RssMain

{

    private static String featurePrefix =

   "http://xml.org/sax/features/";



    /** Invoke with one argument, a URI or filename */

    public static void main (String argv [])

    {

   if (argv.length != 1) {

       System.err.println ("Usage: RssMain [file|URL]");

       System.exit (1);

   }



   try {

       XMLReader      reader;

       RssConsumer      consumer;

       Hashtable      hashtable;

       Resolver      resolver;



       reader = XMLReaderFactory.createXMLReader ();



       consumer = new RssConsumer ();

       reader.setContentHandler (consumer);



       // handle the "official" DTD server being off-line

       hashtable = new Hashtable (5);

       hashtable.put (

      "-//Netscape Communications//DTD RSS 0.91//EN",

      Resolver.fileNameToURL ("rss-0_91.dtd"));

       resolver = new Resolver (hashtable);

       reader.setEntityResolver (resolver);



       // we rely on qNames, and 0.91 doesn't use namespaces

       reader.setFeature (featurePrefix + "namespace-prefixes", true);

       reader.setFeature (featurePrefix + "namespaces", false);



       argv [0] = Resolver.getURL (argv [0]);

       reader.parse (argv [0]);



       RssChannel      channel = consumer.getChannel ();



       System.out.println ("Partial RSS 0.91 channel info");

       System.out.println ("SOURCE = " + channel.sourceUri);

       System.out.println ();



       System.out.println ("         Title: " + channel.title);

       System.out.println ("   Description: " + channel.description);

       System.out.println ("          Link: " + channel.link);

       System.out.println ("      Language: " + channel.language);

       System.out.println ("     WebMaster: " + channel.webMaster);

       System.out.println ("ManagingEditor: " + channel.managingEditor);

       System.out.println ();



       System.out.println ("    Item Count: " + channel.items.size ());

       for (int i = 0; i < channel.items.size (); i++) {

      RssItem      item = (RssItem)

                channel.items.elementAt (i);

      System.out.println ("ITEM # " + i);

      if (item != null) {

          System.out.println ("         Title: " + item.title);

          System.out.println ("   Description: " + item.description);

          System.out.println ("          Link: " + item.link);

      }

       }



   // Good error handling is not shown here, for simplicity

   } catch (Exception e) {

       System.err.println ("Whoa: " + e.getMessage ());

       System.exit (1);

   }

   System.exit (0);

    }

}