public static bool IsFunctionAvailable(string localName, string nsUri)
{
if (XPathBuilder.IsFunctionAvailable(localName, nsUri))
{
return(true);
}
if (nsUri.Length == 0)
{
return(FunctionTable.ContainsKey(localName) && localName != "unparsed-entity-uri");
}
if (nsUri == XmlReservedNs.NsMsxsl)
{
return(
localName == "node-set" ||
localName == "format-date" ||
localName == "format-time" ||
localName == "local-name" ||
localName == "namespace-uri" ||
localName == "number" ||
localName == "string-compare" ||
localName == "utc"
);
}
if (nsUri == XmlReservedNs.NsExsltCommon)
{
return(localName == "node-set" || localName == "object-type");
}
return(false);
}