public static List <RssItem> ProcessRSS(string feed)
{
if (System.Web.HttpContext.Current.Cache[CacheName] != null)
{
return((List <RssItem>)System.Web.HttpContext.Current.Cache[CacheName]);
}
List <RssItem> feedList = new List <RssItem>();
string feedURL = feed;
StringBuilder rssText = new StringBuilder();
HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(feed);
myRequest.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1.4) Gecko/20070515 Firefox/2";
WebResponse myResponse = myRequest.GetResponse();
Stream rssStream = myResponse.GetResponseStream();
XmlDocument rssDoc = new XmlDocument();
try
{
rssDoc.Load(rssStream);
}
catch
{
RssItem dummyFeed = new RssItem()
{
Link = "",
Description = "Problem connecting to facebook, please check back later!",
Title = "Error"
};
feedList.Add(dummyFeed);
return(feedList);
}
XmlNodeList rssItems = rssDoc.SelectNodes("rss/channel/item");
for (int i = 0; i < rssItems.Count; i++)
{
// article //
string heading;
string description;
string hyperlink;
DateTime date = UKTime.Now.AddDays(-1);
XmlNode rssDetail;
rssDetail = rssItems.Item(i).SelectSingleNode("title");
heading = rssDetail.InnerText;
rssDetail = rssItems.Item(i).SelectSingleNode("description");
description = rssDetail.InnerText;
rssDetail = rssItems.Item(i).SelectSingleNode("link");
hyperlink = rssDetail.InnerText;
rssDetail = rssItems.Item(i).SelectSingleNode("pubDate");
try
{
//Date in the format: "Wed, 07 Mar 2012 14:44:00"
date = DateTime.Parse(rssDetail.InnerText);
}
catch { }
RssItem newFeed = new RssItem(heading, description, date, hyperlink, RssItem.FeedTypes.Facebook);
feedList.Add(newFeed);
}
int expirationDuration = 6;
if (!feedList.Any())
{
expirationDuration = 1;
}
System.Web.HttpContext.Current.Cache.Add(CacheName, feedList, null, DateTime.UtcNow.AddHours(expirationDuration),
TimeSpan.Zero, System.Web.Caching.CacheItemPriority.Default, null);
return(feedList);
}
public void AddItem(RssItem item)
{
rssList.Add(item);
}
/// <summary>
/// Returns an IEnumerable of RssItem based on a given uri, which
/// can be an internet URL or a local filesystem/network path
/// </summary>
/// <param name="uri">URI of RSS Feed</param>
/// <param name="timeout">Timeout, after which
/// data will be refreshed</param>
/// <returns>IEnumerable of RssItem</returns>
public IEnumerable <RssItem> Read(string uri, double timeout)
{
// attempt to fetch from cache
CachedFeed feed = feeds.FirstOrDefault(p => p.Uri == uri);
if (feed != null &&
feed.Expiry > DateTime.UtcNow)
{
return(feed.RssItems);
}
string url = uri;
using (XmlTextReader reader = new XmlTextReader(url))
{
XmlDocument doc = new XmlDocument();
for (int i = 0; i < 5; i++)
{
try
{
doc.Load(reader);
break;
}
catch (Exception ex)
{
if (i == 4)
{
throw;
}
}
}
List <RssItem> rssItems = new List <RssItem>();
if (doc["rss"] == null)
{
rssItems.Add(new RssItem
{
Description = "This is unavailable right now... sorry!"
});
return(rssItems);
}
XmlNode channel = doc["rss"]["channel"];
foreach (XmlNode n in channel.ChildNodes)
{
if (n.Name == "item")
{
RssItem rssItem = new RssItem
{
Description = n["description"].InnerText,
Title = n["title"].InnerText,
Date = DateTime.Parse(n["pubDate"].InnerText),
Link = n["link"].InnerText,
};
rssItems.Add(rssItem);
}
}
// store this item in the cache
if (feed == null)
{
feed = new CachedFeed();
feeds.Add(feed);
}
feed.Expiry = DateTime.UtcNow.AddHours(timeout);
feed.RssItems = rssItems;
feed.Uri = uri;
HttpContext.Current.Cache[CACHEID] = feeds;
return(rssItems);
}
}
public static List <RssItem> ProcessRSS(string feed)
{
List <RssItem> feedList = new List <RssItem>();
string feedURL = feed;
StringBuilder rssText = new StringBuilder();
HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(feed);
myRequest.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1.4) Gecko/20070515 Firefox/2";
WebResponse myResponse = myRequest.GetResponse();
Stream rssStream = myResponse.GetResponseStream();
XmlDocument rssDoc = new XmlDocument();
string twitterUsername = feed.Substring(feed.IndexOf("screen_name=") + "screen_name=".Length);
try
{
rssDoc.Load(rssStream);
}
catch
{
RssItem dummyFeed = new RssItem()
{
Link = "https://twitter.com/#!/" + twitterUsername,
Description = "Problem connecting to Twitter, please check back later!",
Title = "Error"
};
feedList.Add(dummyFeed);
return(feedList);
}
XmlNodeList rssItems = rssDoc.SelectNodes("statuses/status");
for (int i = 0; i < rssItems.Count; i++)
{
// article //
string heading;
string description;
string hyperlink;
DateTime date = UKTime.Now.AddDays(-1);
XmlNode rssDetail;
rssDetail = rssItems.Item(i).SelectSingleNode("id");
heading = rssDetail.InnerText;
rssDetail = rssItems.Item(i).SelectSingleNode("text");
description = rssDetail.InnerText;
//rssDetail = rssItems.Item(i).SelectSingleNode("link");
hyperlink = "https://twitter.com/#!/" + twitterUsername;
rssDetail = rssItems.Item(i).SelectSingleNode("created_at");
try
{
//Date in the format: "Wed Mar 07 16:51:31 +0000 2012"
date = ParseTwitterDate(rssDetail.InnerText);
}
catch { }
RssItem newFeed = null;
newFeed = new RssItem(heading, Twitter.Format(description), date, hyperlink, RssItem.FeedTypes.Twitter);
feedList.Add(newFeed);
}
return(feedList);
}
