+let strip_xpointer ((uri,_) as olduri) =
+ try
+ let index = String.rindex uri '#' in
+ let no_xpointer = String.sub uri 0 index in
+ uri_of_string no_xpointer
+ with
+ Not_found -> olduri
+
+let clear_suffix uri ?(pat2="",0) pat1 =
+ try
+ let index = String.rindex uri '.' in
+ let index' = index + 1 in
+ let suffix = String.sub uri index' (String.length uri - index') in
+ if fst pat1 = suffix || fst pat2 = suffix then
+ String.sub uri 0 index
+ else
+ uri
+ with
+ Not_found -> assert false
+
+let has_suffix uri (pat,n) =
+ try
+ let suffix = String.sub uri (String.length uri - n) n in
+ pat = suffix
+ with
+ Not_found -> assert false
+
+
+let cicuri_of_uri (uri, _) = uri_of_string (clear_suffix uri ~pat2:_types _ann)
+
+let annuri_of_uri (uri , _) = uri_of_string ((clear_suffix uri _ann) ^ _dotann)
+
+let uri_is_annuri (uri, _) = has_suffix uri _ann
+
+let uri_is_var (uri, _) = has_suffix uri _var
+
+let uri_is_con (uri, _) = has_suffix uri _con
+
+let bodyuri_of_uri (uri, _) =
+ if has_suffix uri _con then
+ Some (uri_of_string (uri ^ _dotbody))