/// <summary>
/// Resolves a <see cref="XName"/> from the given prefixed name, given the specified <see cref="XObject"/>'s
/// naming context.
/// </summary>
/// <param name="self"></param>
/// <param name="prefixedName"></param>
/// <returns></returns>
public static XName ResolvePrefixedName(this XObject self, string prefixedName)
{
Contract.Requires <ArgumentNullException>(self != null);
Contract.Requires <ArgumentNullException>(prefixedName != null);
var i = prefixedName.IndexOf(':');
if (i == -1)
{
return(self.GetNamespaceOfPrefix("") + prefixedName);
}
var prefix = prefixedName.Substring(0, i);
if (string.IsNullOrWhiteSpace(prefix))
{
prefix = "";
}
var localName = prefixedName.Substring(i + 1);
if (string.IsNullOrWhiteSpace(localName))
{
localName = "";
}
var ns = self.GetNamespaceOfPrefix(prefix);
if (ns == null)
{
throw new NullReferenceException();
}
return(ns + localName);
}
public override string LookupNamespace(string prefix)
{
// default prefix resolve to default namespace
if (prefix == "")
{
return("");
}
return(xml.GetNamespaceOfPrefix(prefix).NamespaceName);
}