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package de.podfetcher.syndication.handler;
import java.util.ArrayList;
import de.podfetcher.feed.Feed;
import de.podfetcher.feed.FeedImage;
import de.podfetcher.feed.FeedItem;
import de.podfetcher.feed.FeedMedia;
import de.podfetcher.syndication.namespace.SyndElement;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* SAX-Parser for reading RSS-Feeds
*
* @author daniel
*
*/
public class RSSHandler extends SyndHandler {
public final static String CHANNEL = "channel";
public final static String ITEM = "item";
public final static String TITLE = "title";
public final static String LINK = "link";
public final static String DESCR = "description";
public final static String PUBDATE = "pubDate";
public final static String ENCLOSURE = "enclosure";
public final static String IMAGE = "image";
public final static String URL = "url";
public final static String ENC_URL = "url";
public final static String ENC_LEN = "length";
public final static String ENC_TYPE = "type";
public RSSHandler(Feed feed) {
super(feed);
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (state.tagstack.size() >= 2) {
String content = new String(ch, start, length);
SyndElement topElement = state.tagstack.pop();
String top = topElement.getName();
String second = state.tagstack.peek().getName();
state.tagstack.push(topElement);
if (top.equals(TITLE)) {
if (second.equals(ITEM)) {
state.currentItem.setTitle(content);
} else if (second.equals(CHANNEL)) {
state.feed.setTitle(content);
} else if (second.equals(IMAGE)) {
state.feed.getImage().setTitle(IMAGE);
}
} else if (top.equals(DESCR)) {
if (second.equals(CHANNEL)) {
state.feed.setDescription(content);
} else if (second.equals(ITEM)) {
state.feed.setDescription(content);
}
} else if (top.equals(LINK)) {
if (second.equals(CHANNEL)) {
state.feed.setLink(content);
} else if (second.equals(ITEM)) {
state.currentItem.setLink(content);
}
} else if (top.equals(PUBDATE) && second.equals(ITEM)) {
state.currentItem.setPubDate(content);
} else if (top.equals(URL) && second.equals(IMAGE)) {
state.feed.getImage().setDownload_url(content);
}
}
}
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (localName.equals(ITEM)) {
state.currentItem = null;
}
super.endElement(uri, localName, qName);
}
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
if (localName.equals(ITEM)) {
state.currentItem = new FeedItem();
state.feed.getItems().add(state.currentItem);
state.currentItem.setFeed(state.feed);
} else if (localName.equals(ENCLOSURE)) {
state.currentItem
.setMedia(new FeedMedia(state.currentItem, attributes
.getValue(ENC_URL), Long.parseLong(attributes
.getValue(ENC_LEN)), attributes.getValue(ENC_TYPE)));
} else if (localName.equals(IMAGE)) {
state.feed.setImage(new FeedImage());
}
super.startElement(uri, localName, qName, attributes);
}
}
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