FeedMacro.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.turro.elephant.impl.feed;
 
import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.io.FeedException;
import com.sun.syndication.io.SyndFeedInput;
import com.sun.syndication.io.XmlReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.turro.elephant.context.ElephantContext;
import org.turro.elephant.context.IConstructor;
import org.turro.elephant.impl.util.Localizer;
import org.turro.marker.ElephantMarker;
 
public class FeedMacro {
 
  public static void writeFeed(IConstructor constructor, String feeds) {
    PrintWriter out = null;
    try {
      Localizer localizer = constructor.getLocalizer();
      out = constructor.getOut();
      String[] url = feeds.split(",");
      SyndFeedInput input = new SyndFeedInput();
      SyndFeed feed;
      out.print("<div class='rssreader'>");
      for (int i = 0; i < url.length; i++) {
        feed = input.build(new XmlReader(new URL(url[i])));
        renderFeed(feed, constructor);
      }
      out.print("</div>");
    } catch (IllegalArgumentException ex) {
      Logger.getLogger(FeedMacro.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    } catch (FeedException ex) {
      Logger.getLogger(FeedMacro.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    } catch (IOException ex) {
      Logger.getLogger(FeedMacro.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    }
  }
 
  private static void renderFeed(SyndFeed feed, IConstructor constructor) {
    ElephantMarker marker = new ElephantMarker(constructor);
    marker.put("feed", feed);
    marker.process("rss", "feed");
  }
 
  private FeedMacro() {
  }
}