December | 2009

/* ***************************************************************************** */
/* Example of a syndication feed reader using the Project Rome API with          */
/* BSF4ooRexx                                                                    */
/* current version (2009) of Rome: rome1.0.jar        https://rome.dev.java.net/ */
/* You need to implement this API plus the JDOM API                              */
/* jdom.jar,     you can find this at https://jdom.org/                          */
/* This class retrieves a syndfeed from the web and prints some                  */
/* information about the feed using                                              */
/* "com.sun.syndication.io.SyndFeedInput" methods                                */
/* created by Martin Stoppacher     date:   26.12.2009                           */
/* ***************************************************************************** */

say hello this reads a syndfeed 
--say please type in the url        /* possible input statement for the feed URL */ 
--pull url 

--parse arg url                                  /* optional input via arguments */ 

         /* The url String is predefined in this example, to change the feed url */ 
               /* replace to String in this file or use one of the above methods */ 

url= "http://rss.orf.at/fm4.xml" 
feedUrl=.bsf~new("java.net.URL", url)      /* create an instance of java.net.URL */ 
say connecting__ || feedUrl~getAuthority() 

input=.bsf~new("com.sun.syndication.io.SyndFeedInput")/* creates a SyndFeedInput */

xmlr=.bsf~new("com.sun.syndication.io.XmlReader", feedUrl) 
       /* Figures out the charset encoding of the XML document within the stream */ 
feed= input~build(xmlr) 
         /* Builds a SyndFeedImpl from an Reader , also possible with SAX or DOM */ 

say bb~getDefaultEncoding() 
say feed                                              /* returns the feed object */ 

::requires BSF.cls                                       /* get the Java support */

/* ***************************************************************************** */

/* Example of a syndication feed reader using the Project Rome API with */

/* BSF4ooRexx */

/* current version (2009) of Rome: rome1.0.jar https://rome.dev.java.net/ */

/* You need to implement this API plus the JDOM API */

/* jdom.jar, you can find this at https://jdom.org/ */

/* This class retrieves a syndfeed from the web and prints some */

/* information about the feed using */

/* "com.sun.syndication.io.SyndFeedInput" methods */

/* created by Martin Stoppacher date: 26.12.2009 */

/* ***************************************************************************** */

say hello this reads a syndfeed

--say please type in the url /* possible input statement for the feed URL */

--pull url

--parse arg url /* optional input via arguments */

/* The url String is predefined in this example, to change the feed url */

/* replace to String in this file or use one of the above methods */

url= "http://rss.orf.at/fm4.xml"

feedUrl=.bsf~new("java.net.URL", url) /* create an instance of java.net.URL */

say connecting__ || feedUrl~getAuthority()

input=.bsf~new("com.sun.syndication.io.SyndFeedInput")/* creates a SyndFeedInput */

xmlr=.bsf~new("com.sun.syndication.io.XmlReader", feedUrl)

/* Figures out the charset encoding of the XML document within the stream */

feed= input~build(xmlr)

/* Builds a SyndFeedImpl from an Reader , also possible with SAX or DOM */

say bb~getDefaultEncoding()

say feed /* returns the feed object */

::requires BSF.cls /* get the Java support */

/* ***************************************************************************** */
/* Example of a syndication feed reader using the Project Rome API               */
/* current version of Rome: rome1.0.jar (2009)      https://rome.dev.java.net/   */
/* You need to implement this API plus the JDOM API                              */
/* jdom.jar  ,   you can find this at               https://jdom.org/            */
/* Parts of this example are taken from the PRome Web Page tutorials             */
/* https://rome.dev.java.net/  author: Alejandro Abdelnur                        */
/*                                                                               */
/* This class retrieves a syndfeed from the web and prints its                   */
/* pure content to the system                                                    */
/* created by Martin Stoppacher       date:  26.12.2009                          */
/* ***************************************************************************** */

import java.net.URL;
   /* Class URL represents a Uniform Resource Locator, a pointer to a "resource" */
   /* on the World Wide Web                                                      */
import java.io.InputStreamReader;
   /* An InputStreamReader is a bridge from byte streams to character streams    */
import com.sun.syndication.feed.synd.SyndFeed;
   /* This is the Bean interface for all types of feeds.                         */
import com.sun.syndication.io.SyndFeedInput;
   /* Parses an XML document (File, InputStream, Reader, W3C SAX InputSource, W3C*/
   /* DOM Document or JDom DOcument) into an WireFeed (RSS/Atom).                */
import com.sun.syndication.io.XmlReader;
   /* Character stream that handles (or at least attemtps to) all the necessary  */
   /* Voodo to figure out the charset encoding of the XML document within        */
   /* the stream.                                                                */

public class 1_FeedReader {

    public static void main(String[] args) {
        boolean ok = false;
        if (args.length==1) {
            try {
                URL feedUrl = new URL(args[0]);   /*creates a string with the URL*/

                SyndFeedInput input = new SyndFeedInput();    /* new input object*/
                
                SyndFeed feed = input.build(new XmlReader(feedUrl));
                                     /* reads feed from URL and puts it into feed*/

                System.out.println(feed);              /* outputs file to system */

                ok = true;
            }
            catch (Exception ex) {
                ex.printStackTrace();
                System.out.println("ERROR: "+ex.getMessage());
            }
        }

      if (!ok) {
      System.out.println();
      System.out.println("FeedReader reads and prints any RSS/Atom feed type.");
      System.out.println("The first parameter must be the" 
                                                   +"URL of the feed to read.");
      
      System.out.println();
      }
    }

}

/* ***************************************************************************** */

/* Example of a syndication feed reader using the Project Rome API */

/* current version of Rome: rome1.0.jar (2009) https://rome.dev.java.net/ */

/* You need to implement this API plus the JDOM API */

/* jdom.jar , you can find this at https://jdom.org/ */

/* Parts of this example are taken from the PRome Web Page tutorials */

/* https://rome.dev.java.net/ author: Alejandro Abdelnur */

/* */

/* This class retrieves a syndfeed from the web and prints its */

/* pure content to the system */

/* created by Martin Stoppacher date: 26.12.2009 */

/* ***************************************************************************** */

import java.net.URL;

/* Class URL represents a Uniform Resource Locator, a pointer to a "resource" */

/* on the World Wide Web */

import java.io.InputStreamReader;

/* An InputStreamReader is a bridge from byte streams to character streams */

import com.sun.syndication.feed.synd.SyndFeed;

/* This is the Bean interface for all types of feeds. */

import com.sun.syndication.io.SyndFeedInput;

/* Parses an XML document (File, InputStream, Reader, W3C SAX InputSource, W3C*/

/* DOM Document or JDom DOcument) into an WireFeed (RSS/Atom). */

import com.sun.syndication.io.XmlReader;

/* Character stream that handles (or at least attemtps to) all the necessary */

/* Voodo to figure out the charset encoding of the XML document within */

/* the stream. */

public class 1_FeedReader {

public static void main(String[] args) {

boolean ok = false;

if (args.length==1) {

try {

URL feedUrl = new URL(args[0]); /*creates a string with the URL*/

SyndFeedInput input = new SyndFeedInput(); /* new input object*/

SyndFeed feed = input.build(new XmlReader(feedUrl));

/* reads feed from URL and puts it into feed*/

System.out.println(feed); /* outputs file to system */

ok = true;

}

catch (Exception ex) {

ex.printStackTrace();

System.out.println("ERROR: "+ex.getMessage());

}

if (!ok) {

System.out.println();

System.out.println("FeedReader reads and prints any RSS/Atom feed type.");

System.out.println("The first parameter must be the"

+"URL of the feed to read.");

System.out.println();

}

MST

Monthly Archives: December 2009

An example of a syndication feed reader using the Project Rome API with BSF4ooRexx – “java.net.URL” feed reader (2_Rome.rxj)

Syndication feed reader using the Project Rome API – (1_FeedReader.java)