/** Checks if the feed was parsed correctly. */
 private boolean checkFeedData(Feed feed) {
   if (feed.getTitle() == null) {
     Log.e(TAG, "Feed has no title.");
     return false;
   }
   if (!hasValidFeedItems(feed)) {
     Log.e(TAG, "Feed has invalid items");
     return false;
   }
   return true;
 }
    private Feed parseFeed(DownloadRequest request) {
      Feed savedFeed = null;

      Feed feed = new Feed(request.getSource(), new Date());
      feed.setFile_url(request.getDestination());
      feed.setId(request.getFeedfileId());
      feed.setDownloaded(true);
      feed.setPreferences(
          new FeedPreferences(0, true, request.getUsername(), request.getPassword()));

      DownloadError reason = null;
      String reasonDetailed = null;
      boolean successful = true;
      FeedHandler feedHandler = new FeedHandler();

      try {
        feed = feedHandler.parseFeed(feed).feed;
        if (BuildConfig.DEBUG) Log.d(TAG, feed.getTitle() + " parsed");
        if (checkFeedData(feed) == false) {
          throw new InvalidFeedException();
        }

      } catch (SAXException e) {
        successful = false;
        e.printStackTrace();
        reason = DownloadError.ERROR_PARSER_EXCEPTION;
        reasonDetailed = e.getMessage();
      } catch (IOException e) {
        successful = false;
        e.printStackTrace();
        reason = DownloadError.ERROR_PARSER_EXCEPTION;
        reasonDetailed = e.getMessage();
      } catch (ParserConfigurationException e) {
        successful = false;
        e.printStackTrace();
        reason = DownloadError.ERROR_PARSER_EXCEPTION;
        reasonDetailed = e.getMessage();
      } catch (UnsupportedFeedtypeException e) {
        e.printStackTrace();
        successful = false;
        reason = DownloadError.ERROR_UNSUPPORTED_TYPE;
        reasonDetailed = e.getMessage();
      } catch (InvalidFeedException e) {
        e.printStackTrace();
        successful = false;
        reason = DownloadError.ERROR_PARSER_EXCEPTION;
        reasonDetailed = e.getMessage();
      }

      // cleanup();
      if (savedFeed == null) {
        savedFeed = feed;
      }

      if (successful) {
        return savedFeed;
      } else {
        saveDownloadStatus(
            new DownloadStatus(
                savedFeed,
                savedFeed.getHumanReadableIdentifier(),
                reason,
                successful,
                reasonDetailed));
        return null;
      }
    }