+let save_to registry fname =
+ let token_stream = stream_of_xml_tree (xml_tree_of_registry registry) in
+ let oc = open_out fname in
+ Xml.pp_to_outchan token_stream oc;
+ close_out oc
+
+let rec load_from_absolute ?path registry fname =
+ let _path = ref (match path with None -> [] | Some p -> p)in
+ (* <section> elements entered so far *)
+ let in_key = ref false in (* have we entered a <key> element? *)
+ let cdata = ref "" in (* collected cdata (inside <key> *)
+ let push_path name = _path := name :: !_path in
+ let pop_path () = _path := List.tl !_path in
+ let start_element tag attrs =
+ match tag, attrs with
+ | "section", ["name", name] -> push_path name
+ | "key", ["name", name] -> in_key := true; push_path name
+ | "helm_registry", _ -> ()
+ | "include", ["href", fname] ->
+ debug_print (lazy ("including file " ^ fname));
+ load_from_absolute ~path:!_path registry fname
+ | tag, _ ->
+ raise (Parse_error (fname, ~-1, ~-1,
+ (sprintf "unexpected element <%s> or wrong attribute set" tag)))
+ in
+ let end_element tag =
+ match tag with
+ | "section" -> pop_path ()
+ | "key" ->
+ let key = String.concat "." (List.rev !_path) in
+ set' registry ~key ~value:!cdata;
+ cdata := "";
+ in_key := false;
+ pop_path ()
+ | "include" | "helm_registry" -> ()
+ | _ -> assert false
+ in
+ let character_data text =
+ if !in_key then cdata := !cdata ^ text
+ in
+ let callbacks = {
+ XmlPushParser.default_callbacks with
+ XmlPushParser.start_element = Some start_element;
+ XmlPushParser.end_element = Some end_element;
+ XmlPushParser.character_data = Some character_data;
+ } in
+ let xml_parser = XmlPushParser.create_parser callbacks in
+ let backup = backup_registry registry in
+(* if path = None then Hashtbl.clear registry; *)
+ try
+ XmlPushParser.parse xml_parser (`File fname)
+ with exn ->
+ restore_registry backup registry;
+ raise exn
+
+let load_from registry ?path fname =