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(* Js_of_ocaml library
* http://www.ocsigen.org/js_of_ocaml/
* Copyright (C) 2011 Pierre Chambart
* Laboratoire PPS - CNRS Université Paris Diderot
*
* 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.
*)
open Js_of_ocaml
open Js
open Dom
open File
open! Import
let read_with_filereader (fileReader : fileReader t constr) kind file =
let reader = new%js fileReader in
let res, w = Lwt.task () in
reader##.onloadend :=
handler (fun _ ->
if reader##.readyState == DONE
then
Lwt.wakeup
w
(match Opt.to_option (CoerceTo.string reader##.result) with
| None -> assert false (* can't happen: called with good readAs_ *)
| Some s -> s)
else ();
(* CCC TODO: handle errors *)
Js._false);
Lwt.on_cancel res (fun () -> reader##abort);
(match kind with
| `BinaryString -> reader##readAsBinaryString file
| `Text -> reader##readAsText file
| `Text_withEncoding e -> reader##readAsText_withEncoding file e
| `DataURL -> reader##readAsDataURL file);
res
let reader kind file = read_with_filereader fileReader kind file
let readAsBinaryString file = reader `BinaryString file
let readAsText file = reader `Text file
let readAsText_withEncoding file e = reader (`Text_withEncoding e) file
let readAsDataURL file = reader `DataURL file
|
