func (this *Feed) GetVersionInfo(doc *xmlx.Document) (ftype string, fversion [2]int) {
var node *xmlx.Node
if node = doc.SelectNode("http://www.w3.org/2005/Atom", "feed"); node == nil {
goto rss
}
ftype = "atom"
fversion = [2]int{1, 0}
return
rss:
if node = doc.SelectNode("", "rss"); node != nil {
ftype = "rss"
version := node.As("", "version")
p := strings.Index(version, ".")
major, _ := strconv.Atoi(version[0:p])
minor, _ := strconv.Atoi(version[p+1 : len(version)])
fversion = [2]int{major, minor}
return
}
// issue#5: Some documents have an RDF root node instead of rss.
if node = doc.SelectNode("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "RDF"); node != nil {
ftype = "rss"
fversion = [2]int{1, 1}
return
}
ftype = "unknown"
fversion = [2]int{0, 0}
return
}
