ocaml/test/Moretest/tscanf2_io.ml

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OCaml

(* A very simple communication module using buffers. It should help detecting
advanced character reading by Scanf when using stdin. *)
let send_flush send ob oc t =
send ob t;
Buffer.output_buffer oc ob;
Buffer.clear ob;
flush oc;;
(* The correct sending format for the test should be "%S\n",
but to avoid problems when Scanf ask too early for the next character,
"%S\n\n" is fine. *)
let send_string = send_flush (fun ob -> Printf.bprintf ob "%S\n");;
(* The correct reading format for the test should be "%S\n",
but to avoid problems when Scanf ask too early for the next character,
" %S\n" is fine. *)
let receive_string ib = Scanf.bscanf ib "%S\n" (fun s -> s);;