blob: cbefc301b6889eeed3eafb62ca2888cb8744bf1c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
(* Example from the documentation, this code is in public domain. *)
(* Implementation of the command *)
let chorus count msg = for i = 1 to count do print_endline msg done
(* Command line interface *)
open Cmdliner
let count =
let doc = "Repeat the message $(docv) times." in
Arg.(value & opt int 10 & info ["c"; "count"] ~docv:"COUNT" ~doc)
let msg =
let env =
let doc = "Overrides the default message to print." in
Cmd.Env.info "CHORUS_MSG" ~doc
in
let doc = "The message to print." in
Arg.(value & pos 0 string "Revolt!" & info [] ~env ~docv:"MSG" ~doc)
let chorus_t = Term.(const chorus $ count $ msg)
let cmd =
let doc = "Print a customizable message repeatedly" in
let man = [
`S Manpage.s_bugs;
`P "Email bug reports to <bugs@example.org>." ]
in
let info = Cmd.info "chorus" ~version:"v1.2.0" ~doc ~man in
Cmd.v info chorus_t
let main () = exit (Cmd.eval cmd)
let () = main ()
|
