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package de.danoeh.antennapod.opml;
import java.io.IOException;
import java.io.Writer;
import java.util.List;
import org.xmlpull.v1.XmlSerializer;
import android.util.Log;
import android.util.Xml;
import de.danoeh.antennapod.AppConfig;
import de.danoeh.antennapod.feed.Feed;
/** Writes OPML documents. */
public class OpmlWriter {
private static final String TAG = "OpmlWriter";
private static final String ENCODING = "UTF-8";
private static final String OPML_VERSION = "2.0";
private static final String OPML_TITLE = "AntennaPod Subscriptions";
/**
* Takes a list of feeds and a writer and writes those into an OPML
* document.
*
* @throws IOException
* @throws IllegalStateException
* @throws IllegalArgumentException
*/
public void writeDocument(List<Feed> feeds, Writer writer)
throws IllegalArgumentException, IllegalStateException, IOException {
if (AppConfig.DEBUG)
Log.d(TAG, "Starting to write document");
XmlSerializer xs = Xml.newSerializer();
xs.setOutput(writer);
xs.startDocument(ENCODING, false);
xs.startTag(null, OpmlSymbols.OPML);
xs.attribute(null, OpmlSymbols.VERSION, OPML_VERSION);
xs.startTag(null, OpmlSymbols.HEAD);
xs.startTag(null, OpmlSymbols.TITLE);
xs.text(OPML_TITLE);
xs.endTag(null, OpmlSymbols.TITLE);
xs.endTag(null, OpmlSymbols.HEAD);
xs.startTag(null, OpmlSymbols.BODY);
for (Feed feed : feeds) {
xs.startTag(null, OpmlSymbols.OUTLINE);
xs.attribute(null, OpmlSymbols.TEXT, feed.getTitle());
if (feed.getType() != null) {
xs.attribute(null, OpmlSymbols.TYPE, feed.getType());
}
xs.attribute(null, OpmlSymbols.XMLURL, feed.getDownload_url());
if (feed.getLink() != null) {
xs.attribute(null, OpmlSymbols.HTMLURL, feed.getLink());
}
xs.endTag(null, OpmlSymbols.OUTLINE);
}
xs.endTag(null, OpmlSymbols.BODY);
xs.endTag(null, OpmlSymbols.OPML);
xs.endDocument();
if (AppConfig.DEBUG)
Log.d(TAG, "Finished writing document");
}
}
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