private static async Task <List <SyndicationItem> > GetFeedItemsForBlogger(Blogger blogger, HttpClient client)
{
var feedItems = new List <SyndicationItem>();
var timer = Stopwatch.StartNew();
String.Format("Parsing / adding Items from \"{0}\" ", blogger.Name).ConsoleWriteLine(ConsoleColor.White);
try
{
// check feed type
switch (blogger.FeedType.ToLower())
{
case "rss":
var rssItems = await GetRssItemsForBlogger(blogger, client);
rssItems.ForEach(feedItems.Add);
break;
case "atom":
var atomItems = await GetAtomItemsForBlogger(blogger, client);
atomItems.ForEach(feedItems.Add);
break;
default:
break;
}
String.Format("Successfully parsed Items from \"{0}\" in {1}s. ", blogger.Name, timer.Elapsed.TotalSeconds)
.ConsoleWriteLine(ConsoleColor.Green);
return(feedItems);
}
catch (Exception ex)
{
timer.Stop();
String.Format("Failed Parsing / adding Items from \"{0}\"", blogger.Name).ConsoleWriteLine(ConsoleColor.White);
string.Format("With exception {0}", ex.Message).ConsoleWriteLine(ConsoleColor.Red);
return(feedItems);
// throw;
}
}
private static async Task <List <SyndicationItem> > GetAtomItemsForBlogger(Blogger blogger, HttpClient client)
{
var atomItems = new List <SyndicationItem>();
// parse Atom feed
var atomResponse = await client.GetAsync(blogger.BlogfeedUrl);
var atomStream = await atomResponse.Content.ReadAsStreamAsync();
var atomStreamReader = new StreamReader(atomStream, Encoding.UTF8);
var atomReader = XmlReader.Create(atomStreamReader);
var atomSerializer = new Atom10FeedFormatter();
atomSerializer.ReadFrom(atomReader);
var atomFeed = atomSerializer.Feed;
foreach (var item in atomFeed.Items)
{
var newItem = new SyndicationItem
{
BaseUri = item.BaseUri,
Content = item.Content,
Id = item.Id,
LastUpdatedTime = item.LastUpdatedTime
};
foreach (var link in item.Links)
{
newItem.Links.Add(link);
}
newItem.PublishDate = item.PublishDate;
newItem.Summary = item.Summary;
newItem.Title = item.Title;
var copyright =
new TextSyndicationContent(blogger.Name);
newItem.Copyright = copyright;
if (item.ElementExtensions.Count > 0)
{
var reader = item.ElementExtensions.GetReaderAtElementExtensions();
while (reader.Read())
{
if ("content:encoded" == reader.Name)
{
SyndicationContent content =
SyndicationContent.CreatePlaintextContent(reader.ReadString());
newItem.Content = content;
}
}
}
// assign author name explicitly because email is
// used by default
var author = new SyndicationPerson {
Name = blogger.Name
};
newItem.Authors.Add(author);
newItem.Contributors.Add(author);
var doc = new XmlDocument();
var creator = String.Format(
"<dc:creator xmlns:dc=\"http://purl.org/dc/elements/1.1/\">{0}</dc:creator>",
blogger.Name);
doc.LoadXml(creator);
var insertext = new SyndicationElementExtension(new XmlNodeReader(doc.DocumentElement));
newItem.ElementExtensions.Add(insertext);
atomItems.Add(newItem);
}
return(atomItems);
}
