tools/gen_signatures_registry.ml

@@ -26,7 +26,7 @@ module Recfile = struct
       (fun hd tl -> String.of_seq (List.to_seq (hd :: tl)))
       first_char (many subsequent_char)
 
-  (* todo handle '\' escape and '+' on next line *)
+  (* TODO handle '\' escape and '+' on next line *)
   let field_value = take_till is_newline <* newline
 
   let field =
@@ -51,30 +51,17 @@ module Recfile = struct
   let parse s = parse_string ~consume:All recfile s
 end
 
-let url =
+let download url =
-  "https://git-www.gnunet.org/gana.git/plain/gnunet-signatures/registry.rec"
-
-let registry_file = "registry.rec"
-
-let download () =
   let open Bos in
   let res =
-    OS.Cmd.run
+    OS.Cmd.(
-      Cmd.(
+      to_string
-        v "curl"
+        (run_out
-        % "--silent"
+           Cmd.(v "curl" % "--silent" % "--show-error" % "-X" % "GET" % url)))
-        % "--show-error"
-        % "-o"
-        % registry_file
-        % "-X"
-        % "GET"
-        % url)
   in
   match res with
   | Error (`Msg s) -> Fmt.failwith "download failure: %s" s
-  | Ok () -> ()
+  | Ok registry_rec -> registry_rec
-
-let read_file file = In_channel.with_open_bin file In_channel.input_all
 
 type purpose = {
   number: int32;
@@ -100,13 +87,7 @@ let parse_purposes records =
       | _ -> None)
   |> List.filter (fun v -> v.number >= 1000_l)
 
-let () =
+let print_module purposes =
-  download ();
-  let content = read_file registry_file in
-  match Recfile.parse content with
-  | Error msg -> Fmt.failwith "Recfile parse error: %s" msg
-  | Ok records ->
-      let purposes = parse_purposes records in
   let header =
     {|(* This file was generated from the GANA database:
    https://git-www.gnunet.org/gana.git/tree/gnunet-signatures/registry.rec *)|}
@@ -116,3 +97,16 @@ let () =
   in
   Fmt.pr "%s\n\n%a@." header (Fmt.list ~sep:Fmt.nop pp) purposes;
   ()
+
+let url =
+  "https://git-www.gnunet.org/gana.git/plain/gnunet-signatures/registry.rec"
+
+let main () =
+  let registry_rec = download url in
+  match Recfile.parse registry_rec with
+  | Error msg -> Fmt.failwith "Recfile parse error: %s" msg
+  | Ok records ->
+      print_module (parse_purposes records);
+      ()
+
+let () = main ()