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package de.danoeh.antennapod.opml;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import android.util.Log;
import de.danoeh.antennapod.AppConfig;
/** Reads OPML documents. */
public class OpmlReader {
private static final String TAG = "OpmlReader";
// ATTRIBUTES
private boolean isInOpml = false;
private ArrayList<OpmlElement> elementList;
/**
* Reads an Opml document and returns a list of all OPML elements it can
* find
*
* @throws IOException
* @throws XmlPullParserException
*/
public ArrayList<OpmlElement> readDocument(Reader reader)
throws XmlPullParserException, IOException {
elementList = new ArrayList<OpmlElement>();
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
XmlPullParser xpp = factory.newPullParser();
xpp.setInput(reader);
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
if (AppConfig.DEBUG)
Log.d(TAG, "Reached beginning of document");
break;
case XmlPullParser.START_TAG:
if (xpp.getName().equals(OpmlSymbols.OPML)) {
isInOpml = true;
if (AppConfig.DEBUG)
Log.d(TAG, "Reached beginning of OPML tree.");
} else if (isInOpml && xpp.getName().equals(OpmlSymbols.OUTLINE)) {
if (AppConfig.DEBUG)
Log.d(TAG, "Found new Opml element");
OpmlElement element = new OpmlElement();
final String title = xpp.getAttributeValue(null, OpmlSymbols.TITLE);
if (title != null) {
Log.i(TAG, "Using title: " + title);
element.setText(title);
} else {
Log.i(TAG, "Title not found, using text");
element.setText(xpp.getAttributeValue(null, OpmlSymbols.TEXT));
}
element.setXmlUrl(xpp.getAttributeValue(null, OpmlSymbols.XMLURL));
element.setHtmlUrl(xpp.getAttributeValue(null, OpmlSymbols.HTMLURL));
element.setType(xpp.getAttributeValue(null, OpmlSymbols.TYPE));
if (element.getXmlUrl() != null) {
if (element.getText() == null) {
Log.i(TAG, "Opml element has no text attribute.");
element.setText(element.getXmlUrl());
}
elementList.add(element);
} else {
if (AppConfig.DEBUG)
Log.d(TAG,
"Skipping element because of missing xml url");
}
}
break;
}
eventType = xpp.next();
}
if (AppConfig.DEBUG)
Log.d(TAG, "Parsing finished.");
return elementList;
}
}
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