private void WriteItem(ISyndicatable item, XmlTextWriter xtw)
{
using (new ElementWriter("item", xtw))
{
xtw.WriteElementString("title", item.Title);
xtw.WriteElementString("link", GetLink(item.Url));
xtw.WriteElementString("description", item.Summary);
if (item.Published != null)
xtw.WriteElementString("pubDate", GetDate(item.Published.Value));
//xtw.WriteElementString("guid", "urn:uuid:" + item.MessageID);
}
}
private void WriteItem(ISyndicatable item, XmlTextWriter xtw)
{
using (new ElementWriter("item", xtw))
{
xtw.WriteElementString("title", item.Title);
xtw.WriteElementString("link", GetLink(item.Url));
xtw.WriteElementString("description", item.Summary);
if (item.Published != null)
{
xtw.WriteElementString("pubDate", GetDate(item.Published.Value));
}
//xtw.WriteElementString("guid", "urn:uuid:" + item.MessageID);
}
}
private void Page_Load(object sender, System.EventArgs e)
{
Context.Response.Clear();
Context.Response.ContentType = "text/xml";
if (Context.Request.QueryString["SectionId"] != null)
{
int sectionId = Int32.Parse(Context.Request.QueryString["SectionId"]);
string pathInfo = Context.Request.PathInfo;
string cacheKey = String.Format("RSS_{0}_{1}", sectionId, pathInfo);
string content = null;
if (Context.Cache[cacheKey] == null)
{
// Get the data for the RSS feed because it's not in the cache yet.
// Use the same cache duration for the RSS feed as the Section.
Section section = this._sectionService.GetSectionById(sectionId);
ModuleBase module = this._moduleLoader.GetModuleFromSection(section);
module.ModulePathInfo = pathInfo;
ISyndicatable syndicatableModule = module as ISyndicatable;
if (syndicatableModule != null)
{
RssChannel channel = syndicatableModule.GetRssFeed();
// Rss feed writer code from http://aspnet.4guysfromrolla.com/articles/021804-1.aspx
// Use an XmlTextWriter to write the XML data to a string...
StringWriter sw = new StringWriter();
XmlTextWriter writer = new XmlTextWriter(sw);
writer.Formatting = Formatting.Indented;
// write out
writer.WriteStartElement("rss");
writer.WriteAttributeString("version", "2.0");
writer.WriteAttributeString("xmlns:dc", "http://purl.org/dc/elements/1.1/");
// write out
writer.WriteStartElement("channel");
// write out -level elements
writer.WriteElementString("title", channel.Title);
writer.WriteElementString("link", Util.UrlHelper.GetFullUrlFromSection(section) + pathInfo);
writer.WriteElementString("description", channel.Description);
writer.WriteElementString("language", channel.Language);
writer.WriteElementString("pubDate", channel.PubDate.ToUniversalTime().ToString("r"));
writer.WriteElementString("lastBuildDate", channel.LastBuildDate.ToUniversalTime().ToString("r"));
writer.WriteElementString("generator", channel.Generator);
writer.WriteElementString("ttl", channel.Ttl.ToString());
// Regular expression to find relative urls
string expression = String.Format(@"=[""']{0}", UrlHelper.GetApplicationPath());
Regex regExUrl = new Regex(expression, RegexOptions.Singleline | RegexOptions.CultureInvariant | RegexOptions.Compiled);
foreach (RssItem item in channel.RssItems)
{
// replace inline relative hyperlinks with full hyperlinks
if (item.Description != null)
{
item.Description = regExUrl.Replace(item.Description, String.Format(@"=""{0}/", UrlHelper.GetSiteUrl()));
}
// write out
writer.WriteStartElement("item");
// write out -level information
writer.WriteElementString("title", item.Title);
// TODO: Only supports ID's in the pathinfo now...
//writer.WriteElementString("link", Util.UrlHelper.GetFullUrlFromSection(section) + "/" + item.ItemId);
writer.WriteElementString("link", item.Link);
writer.WriteElementString("description", item.Description);
writer.WriteElementString("dc:creator", item.Author);
writer.WriteElementString("pubDate", item.PubDate.ToUniversalTime().ToString("r"));
writer.WriteElementString("category", item.Category);
// write out
writer.WriteEndElement();
}
// write out
writer.WriteEndElement();
// write out
writer.WriteEndElement();
content = sw.ToString();
// save the string in the cache
Cache.Insert(cacheKey, content, null, DateTime.Now.AddSeconds(section.CacheDuration), TimeSpan.Zero);
writer.Close();
}
else
{
throw new Exception(String.Format("The module {0} doesn't implement ISyndicatable", module.GetType().FullName));
}
}
else
{
content = Context.Cache[cacheKey].ToString();
}
Context.Response.Write(content);
}
Context.Response.End();
}
