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package de.danoeh.antennapod.syndication.handler;
import android.util.Log;
import de.danoeh.antennapod.BuildConfig;
import de.danoeh.antennapod.feed.Feed;
import org.apache.commons.io.input.XmlStreamReader;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.Reader;
/** Gets the type of a specific feed by reading the root element. */
public class TypeGetter {
private static final String TAG = "TypeGetter";
enum Type {
RSS20, RSS091, ATOM, INVALID
}
private static final String ATOM_ROOT = "feed";
private static final String RSS_ROOT = "rss";
public Type getType(Feed feed) throws UnsupportedFeedtypeException {
XmlPullParserFactory factory;
if (feed.getFile_url() != null) {
try {
factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
XmlPullParser xpp = factory.newPullParser();
xpp.setInput(createReader(feed));
int eventType = xpp.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if (eventType == XmlPullParser.START_TAG) {
String tag = xpp.getName();
if (tag.equals(ATOM_ROOT)) {
feed.setType(Feed.TYPE_ATOM1);
if (BuildConfig.DEBUG)
Log.d(TAG, "Recognized type Atom");
return Type.ATOM;
} else if (tag.equals(RSS_ROOT)) {
String strVersion = xpp.getAttributeValue(null,
"version");
if (strVersion != null) {
if (strVersion.equals("2.0")) {
feed.setType(Feed.TYPE_RSS2);
if (BuildConfig.DEBUG)
Log.d(TAG, "Recognized type RSS 2.0");
return Type.RSS20;
} else if (strVersion.equals("0.91")
|| strVersion.equals("0.92")) {
if (BuildConfig.DEBUG)
Log.d(TAG,
"Recognized type RSS 0.91/0.92");
return Type.RSS091;
}
}
throw new UnsupportedFeedtypeException(Type.INVALID);
} else {
if (BuildConfig.DEBUG)
Log.d(TAG, "Type is invalid");
throw new UnsupportedFeedtypeException(Type.INVALID);
}
} else {
eventType = xpp.next();
}
}
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
if (BuildConfig.DEBUG)
Log.d(TAG, "Type is invalid");
throw new UnsupportedFeedtypeException(Type.INVALID);
}
private Reader createReader(Feed feed) {
Reader reader;
try {
reader = new XmlStreamReader(new File(feed.getFile_url()));
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
return reader;
}
}
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