ocaml/ocamlbuild/digest_cache.ml

44 lines
1.6 KiB
OCaml

(***********************************************************************)
(* *)
(* ocamlbuild *)
(* *)
(* Nicolas Pouillard, Berke Durak, projet Gallium, INRIA Rocquencourt *)
(* *)
(* Copyright 2007 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Library General Public License, with *)
(* the special exception on linking described in file ../LICENSE. *)
(* *)
(***********************************************************************)
(* Original author: Nicolas Pouillard *)
open My_std
open Pathname.Operators
let digests = Hashtbl.create 103
let get = Hashtbl.find digests
let put = Hashtbl.replace digests
let _digests = lazy (!Options.build_dir / (Pathname.mk "_digests"))
let finalize () =
with_output_file !*_digests begin fun oc ->
Hashtbl.iter begin fun name digest ->
Printf.fprintf oc "%S: %S\n" name digest
end digests
end
let init () =
Shell.chdir !Options.build_dir;
if Pathname.exists !*_digests then
with_input_file !*_digests begin fun ic ->
try while true do
let l = input_line ic in
Scanf.sscanf l "%S: %S" put
done with End_of_file -> ()
end;
My_unix.at_exit_once finalize