added <include href="foo/bar/baz.xml" /> support

[helm.git] / helm / ocaml / registry / helm_registry.ml

diff --git a/helm/ocaml/registry/helm_registry.ml b/helm/ocaml/registry/helm_registry.ml
index 8ee95ca30b646706e54c602188fed6236c5d4c55..09582eafe9ee663182d9027a0a20c34ff0165171 100644 (file)
--- a/helm/ocaml/registry/helm_registry.ml
+++ b/helm/ocaml/registry/helm_registry.ml
@@ -25,7 +25,7 @@
 
 open Printf
 
-let debug = false
+let debug = true
 let debug_print s =
   if debug then prerr_endline ("Helm_registry debugging: " ^ s)
 
@@ -262,17 +262,21 @@ let save_to registry fname =
   Xml.pp_to_outchan token_stream oc;
   close_out oc
 
-let load_from_absolute registry fname =
-  let path = ref [] in      (* <section> elements entered so far *)
+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 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 ("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)))
@@ -281,12 +285,12 @@ let load_from_absolute registry fname =
     match tag with
     | "section" -> pop_path ()
     | "key" ->
-        let key = String.concat "." (List.rev !path) in
+        let key = String.concat "." (List.rev !_path) in
         set registry ~key ~value:!cdata;
         cdata := "";
         in_key := false;
         pop_path ()
-    | "helm_registry" -> ()
+    | "include" | "helm_registry" -> ()
     | _ -> assert false
   in
   let character_data text =
@@ -300,7 +304,7 @@ let load_from_absolute registry fname =
   } in
   let xml_parser = XmlPushParser.create_parser callbacks in
   let backup = backup_registry registry in
-  Hashtbl.clear registry;
+  if path = None then Hashtbl.clear registry;
   try
     XmlPushParser.parse xml_parser (`File fname)
   with exn ->