/// <summary>
/// Generates an RSS document.
/// </summary>
/// <param name="items"></param>
/// <returns></returns>
public override System.Xml.XmlDocument Generate(RssChannel channel)
{
if (channel == null)
{
throw new ArgumentNullException("channel");
}
// create a document...
XmlDocument document = new XmlDocument();
// doc...
XmlNamespaceManagerEx manager = XmlHelper.GetNamespaceManagerEx(document);
if (manager == null)
{
throw new InvalidOperationException("manager is null.");
}
manager.AddNamespace(RssChannel.BfxPrefix, RssChannel.BfxNamespace, true);
// doc...
XmlElement rssElement = document.CreateElement("rss");
document.AppendChild(rssElement);
XmlHelper.SetAttributeValue(rssElement, "version", "2.0");
// channel...
XmlElement channelElement = document.CreateElement("channel");
rssElement.AppendChild(channelElement);
channel.Populate(channelElement, manager);
// return...
return(document);
}
internal override void Populate(XmlElement element, XmlNamespaceManagerEx manager)
{
base.Populate(element, manager);
// find the guid...
XmlElement guidElement = (XmlElement)element.SelectSingleNode("guid");
if (guidElement != null)
{
XmlHelper.SetAttributeValue(guidElement, "isPermaLink", this.GuidIsPermalink.ToString().ToLower());
}
if (this.Tags.Any())
{
StringBuilder builder = new StringBuilder();
var first = true;
foreach (var tag in this.Tags)
{
if (first)
{
first = false;
}
else
{
builder.Append(" ");
}
builder.Append(tag);
}
manager.AddNamespace(RssChannel.BfxPrefix, RssChannel.BfxNamespace, true);
element.AddElement("tags", builder.ToString(), RssChannel.BfxPrefix, RssChannel.BfxNamespace);
}
}
/// <summary>
/// Gets RSS items from the given document.
/// </summary>
/// <param name="doc"></param>
/// <returns></returns>
public static RssReadResults ReadRss(XmlDocument doc)
{
if (doc == null)
{
throw new ArgumentNullException("doc");
}
// get....
XmlElement element = (XmlElement)doc.SelectSingleNode("rss");
if (element != null)
{
// get the version...
RssReader reader = null;
string version = XmlHelper.GetAttributeString(element, "version", OnNotFound.ThrowException);
if (version == "2.0")
{
reader = new Rss2Reader();
}
else
{
throw new NotSupportedException(string.Format("A version number of '{0}' is not supported.", version));
}
// get it...
if (reader == null)
{
throw new InvalidOperationException("reader is null.");
}
var manager = new XmlNamespaceManagerEx(doc);
manager.AddNamespace(RssChannel.BfxPrefix, RssChannel.BfxNamespace, true);
return(reader.Read(element, manager));
}
else
{
// mbr - 2009-01-07 - see if it is an atom feed...
var manager = new XmlNamespaceManager(doc.NameTable);
manager.AddNamespace("a", AtomReader.AtomNamespace);
element = (XmlElement)doc.SelectSingleNode("a:feed", manager);
if (element != null)
{
var reader = new AtomReader();
return(reader.Read(element, manager));
}
else
{
throw new NotImplementedException("This operation has not been implemented.");
}
}
}
