private async Task<Models.FeedData> GetFeedAsync(string feedUriString)
{
var client = new SyndicationClient();
Uri feedUri;
if (!Uri.TryCreate(feedUriString, UriKind.RelativeOrAbsolute, out feedUri))
{
return null;
}
try
{
var feed = await client.RetrieveFeedAsync(feedUri);
var feedData = new FeedData();
if (feed.Title != null && feed.Title.Text != null)
{
feedData.Title = feed.Title.Text;
}
if (feed.Subtitle != null && feed.Subtitle.Text != null)
{
feedData.Description = feed.Subtitle.Text;
}
if (feed.Items != null && feed.Items.Count > 0)
{
feedData.PublishedDate = feed.Items[0].PublishedDate.DateTime;
foreach (var item in feed.Items)
{
var feedItem = new FeedItem();
if (item.Title != null && item.Title.Text != null)
{
feedItem.Title = item.Title.Text;
}
if (item.PublishedDate != null)
{
feedItem.PublishedDate = item.PublishedDate.DateTime;
}
if (item.Authors != null && item.Authors.Count > 0)
{
feedItem.PublishedDate = item.PublishedDate.DateTime;
}
if (feed.SourceFormat == SyndicationFormat.Atom10)
{
if (item.Content != null && item.Content.Text != null)
{
feedItem.Content = item.Content.Text;
}
if (item.Id != null)
{
feedItem.Link = new Uri(item.Id);
}
}
else if (feed.SourceFormat == SyndicationFormat.Rss20)
{
if (item.Summary != null && item.Summary.Text != null)
{
feedItem.Content = item.Summary.Text;
}
if (item.Links != null && item.Links.Count > 0)
{
feedItem.Link = item.Links[0].Uri;
}
}
feedItem.Id = Regex.Replace(feedItem.Link.ToString(), @"[^0-9a-zA-Z\.]+", string.Empty).GetHashCode();
feedData.Items.Add(feedItem);
}
}
return feedData;
}
catch (Exception ex)
{
//System.Diagnostics.Debug.WriteLine(ex.Message);
//return null;
SyndicationErrorStatus status = SyndicationError.GetStatus(ex.HResult);
if (status == SyndicationErrorStatus.InvalidXml)
{
System.Diagnostics.Debug.WriteLine("An invalid XML exception was thrown. Please make sure to use a URI that points to a RSS or Atom feed.");
}
if (status == SyndicationErrorStatus.Unknown)
{
Windows.Web.WebErrorStatus webError = Windows.Web.WebError.GetStatus(ex.HResult);
if (webError == Windows.Web.WebErrorStatus.Unknown)
{
// Neither a syndication nor a web error. Rethrow.
throw;
}
}
return null;
}
}
protected override async Task<Models.FeedData> GetFeedAsync(string feedUriString)
{
var client = new SyndicationClient();
Uri feedUri;
if (!Uri.TryCreate(feedUriString, UriKind.RelativeOrAbsolute, out feedUri))
{
return null;
}
try
{
var feed = await client.RetrieveFeedAsync(feedUri);
var feedData = new FeedData();
if (feed.Title != null && feed.Title.Text != null)
{
feedData.Title = feed.Title.Text;
}
if (feed.Subtitle != null && feed.Subtitle.Text != null)
{
feedData.Description = feed.Subtitle.Text;
}
if (feed.Items != null && feed.Items.Count > 0)
{
feedData.PublishedDate = feed.Items[0].PublishedDate.DateTime;
foreach (var item in feed.Items)
{
var feedItem = new FeedItem();
if (item.Title != null && item.Title.Text != null)
{
feedItem.Title = item.Title.Text;
}
if (item.PublishedDate != null)
{
feedItem.PublishedDate = item.PublishedDate.DateTime;
}
if (item.Authors != null && item.Authors.Count > 0)
{
feedItem.PublishedDate = item.PublishedDate.DateTime;
}
if (feed.SourceFormat == SyndicationFormat.Atom10)
{
if (item.Content != null && item.Content.Text != null)
{
feedItem.Content = item.Content.Text;
}
if (item.Id != null)
{
feedItem.Link = new Uri(item.Id);
}
}
else if (feed.SourceFormat == SyndicationFormat.Rss20)
{
if (item.Summary != null && item.Summary.Text != null)
{
feedItem.Content = item.Summary.Text;
}
if (item.Links != null && item.Links.Count > 0)
{
feedItem.Link = item.Links[0].Uri;
}
}
feedItem.Id = Regex.Replace(feedItem.Link.ToString(), @"[^0-9a-zA-Z\.]+", string.Empty).GetHashCode();
feedData.Items.Add(feedItem);
}
}
return feedData;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return null;
}
}
protected override Task<Models.FeedData> GetFeedAsync(string feedUriString)
{
var task = new TaskCompletionSource<Models.FeedData>();
var webClient = new WebClient();
webClient.DownloadStringCompleted += (sender, args) =>
{
if (args.Error == null)
{
var stringReader = new StringReader(args.Result);
var feedData = new FeedData();
using (var xmlReader = XmlReader.Create(stringReader))
{
var feed = SyndicationFeed.Load(xmlReader);
if (feed.Title != null && feed.Title.Text != null)
{
feedData.Title = feed.Title.Text;
}
if (feed.Description != null && feed.Description.Text != null)
{
feedData.Description = feed.Description.Text;
}
if (feed.Items != null && feed.Items.Any())
{
feedData.PublishedDate = feed.Items.First().PublishDate.DateTime;
foreach (var item in feed.Items)
{
var feedItem = new FeedItem();
if (item.Title != null && item.Title.Text != null)
{
feedItem.Title = item.Title.Text;
}
if (item.PublishDate != null)
{
feedItem.PublishedDate = item.PublishDate.DateTime;
}
if (item.Authors != null && item.Authors.Count > 0)
{
feedItem.PublishedDate = item.PublishDate.DateTime;
}
if (item.Content != null && ((TextSyndicationContent)item.Content).Text != null)
{
feedItem.Content = ((TextSyndicationContent)item.Content).Text;
}
else if (item.Summary != null && item.Summary.Text != null)
{
feedItem.Content = item.Summary.Text;
}
if (item.Links != null && item.Links.Count > 0)
{
feedItem.Link = item.Links[0].Uri;
}
feedItem.Id = Regex.Replace(feedItem.Link.ToString(), @"[^0-9a-zA-Z\.]+", string.Empty).GetHashCode();
feedData.Items.Add(feedItem);
}
}
}
task.TrySetResult(feedData);
}
else
{
task.TrySetException(args.Error);
}
};
webClient.DownloadStringAsync(new Uri(feedUriString));
return task.Task;
}
