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(* Js_of_ocaml
* http://www.ocsigen.org/js_of_ocaml/
* Copyright (C) 2020 Hugo Heuzard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, with linking exception;
* either version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*)
let dump_file file =
let buf = Bytes.create 1024 in
let ic = open_in file in
let rec loop () =
let len = input ic buf 0 (Bytes.length buf) in
if len = 0
then ()
else (
output stdout buf 0 len;
loop ())
in
loop ()
let version_match = function
| "default" -> true
| version ->
let len = min (String.length Sys.ocaml_version) (String.length version) in
String.sub Sys.ocaml_version 0 len = version
let split_on_char sep s =
let r = ref [] in
let j = ref (String.length s) in
for i = String.length s - 1 downto 0 do
if String.unsafe_get s i = sep
then (
r := String.sub s (i + 1) (!j - i - 1) :: !r;
j := i)
done;
String.sub s 0 !j :: !r
let () =
let rec select_first i =
if i >= Array.length Sys.argv
then failwith "select.exe failed to select a file."
else
let file = Sys.argv.(i) in
match split_on_char '-' file with
| [ _; version ] ->
if version_match version then dump_file file else select_first (succ i)
| _ -> invalid_arg "select.exe"
in
select_first 1
|
