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(***********************************************************************)
(* *)
(* 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 Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* Original author: Nicolas Pouillard *)
open My_std
open Command
open Pathname.Operators
let () = Log.level := -1000
let usage () =
Format.eprintf "Usage: %s <preprocess-command> <preprocess-args>@." Sys.argv.(0);
exit 4
let () = if Array.length Sys.argv < 2 then usage ()
let args = List.tl (Array.to_list Sys.argv)
let buf = Buffer.create 2048
let digest_file file =
Buffer.add_string buf (Digest.file file)
let digest_string string =
Buffer.add_string buf (Digest.string string)
let search_in_path x =
if Sys.file_exists x then x else
try search_in_path x
with Not_found -> (Format.eprintf "Command not found %s@." x; exit 3)
let cmd =
match args with
| ocamlrun :: x :: _ when String.contains_string ocamlrun 0 "ocamlrun" <> None ->
digest_file (search_in_path ocamlrun); x
| x :: _ -> x
| _ -> usage ()
let output = ref ""
let () = digest_file (search_in_path cmd)
let rec loop =
function
| [] -> Digest.string (Buffer.contents buf)
| ("-impl"|"-intf") :: x :: xs ->
digest_string x; digest_file x; loop xs
| "-o" :: x :: xs ->
output := x; loop xs
| x :: xs ->
let ext = Pathname.get_extension x in
digest_string x;
(match ext with
| "cmo" | "cma" | "ml" | "mli" -> digest_file x
| _ -> ());
loop xs
let digest = loop args;;
let cache_dir = "/tmp/ppcache";; (* FIXME *)
let () = Shell.mkdir_p cache_dir;;
let path = cache_dir/(Digest.to_hex digest);;
let cat path = with_input_file ~bin:true path (fun ic -> copy_chan ic stdout);;
if sys_file_exists path then
if !output = "" then
cat path
else
Shell.cp path !output
else
let cmd = atomize args in
if !output = "" then begin
let tmp = path^".tmp" in
Command.execute (Cmd(S[cmd; Sh ">"; A tmp]));
Shell.mv tmp path;
cat path
end else begin
Command.execute (Cmd cmd);
Shell.cp !output path
end