https://github.com/EasyCrypt/easycrypt
Tip revision: a79f9aeb6de046ca12210d26317fab59c175d0dd authored by Pierre-Yves Strub on 08 July 2014, 09:43:21 UTC
Fix bug w.r.t. _tools presence detection.
Fix bug w.r.t. _tools presence detection.
Tip revision: a79f9ae
ecFortune.ml
(* Copyright (c) - 2012-2014 - IMDEA Software Institute and INRIA
* Distributed under the terms of the CeCILL-B license *)
(* --------------------------------------------------------------------- *)
open EcUtils
(* --------------------------------------------------------------------- *)
let thepick = ref (fun () -> failwith "fortune-uninit")
(* -------------------------------------------------------------------- *)
let pickfor values : unit -> string option =
fun () ->
match Array.length values with
| n when n <= 0 -> None
| n -> Some (values.(Random.int n))
(* --------------------------------------------------------------------- *)
let fortune_from_stream : in_channel -> string list =
let rec aux acc stream =
try
let line = input_line stream in
let line = String.strip line in
if String.length line = 0
then aux acc stream
else aux (line :: acc) stream
with End_of_file -> acc
in fun stream -> aux [] stream
(* --------------------------------------------------------------------- *)
let init () =
let conffiles =
XDG.Data.file
~exists:true ~appname:"easycrypt" ~mode:`All
"fortune.conf"
in
let values =
let for1 filename =
try
let stream = open_in filename in
EcUtils.try_finally
(fun () -> fortune_from_stream stream)
(fun () -> close_in stream)
with Sys_error _ ->
[]
in List.flatten (List.map for1 conffiles)
in thepick := pickfor (Array.of_list values)
(* --------------------------------------------------------------------- *)
let pick () : string option =
!thepick ()