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import org.xmlpull.v1.*;
import java.util.*;
import java.io.*;
import java.net.*;
/**
* A simple example illustrationg some differences of the XmlPull API
* and SAX. For the corresponding SAX based implementation, please refer to
* http://www.cafeconleche.org/slides/sd2001east/xmlandjava/81.html ff. */
public class Weblogs {
static List listChannels()
throws IOException, XmlPullParserException {
return listChannels("http://static.userland.com/weblogMonitor/logs.xml");
}
static List listChannels(String uri)
throws IOException, XmlPullParserException {
Vector result = new Vector();
InputStream is = new URL(uri).openStream();
XmlPullParser parser =
XmlPullParserFactory.newInstance().newPullParser();
parser.setInput(is, null);
parser.nextTag();
parser.require(XmlPullParser.START_TAG, "", "weblogs");
while (parser.nextTag() == XmlPullParser.START_TAG) {
String url = readSingle(parser);
if (url != null)
result.addElement(url);
}
parser.require(XmlPullParser.END_TAG, "", "weblogs");
parser.next();
parser.require(XmlPullParser.END_DOCUMENT, null, null);
is.close ();
parser.setInput (null);
return result;
}
public static String readSingle(XmlPullParser parser)
throws IOException, XmlPullParserException {
String url = null;
parser.require(XmlPullParser.START_TAG, "", "log");
while (parser.nextTag() == XmlPullParser.START_TAG) {
String name = parser.getName();
String content = parser.nextText();
if (name.equals("url"))
url = content;
parser.require(XmlPullParser.END_TAG, "", name);
}
parser.require(XmlPullParser.END_TAG, "", "log");
return url;
}
public static void main(String[] args)
throws IOException, XmlPullParserException {
List urls =
args.length > 0
? listChannels(args[0])
: listChannels();
for (Iterator i = urls.iterator(); i.hasNext();)
System.out.println(i.next());
}
}
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