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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
(* Js_of_ocaml tests
* http://www.ocsigen.org/js_of_ocaml/
* Copyright (C) 2025 Hugo Heuzard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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
let%expect_test "test utf8-utf16 conversions" =
let min = Uchar.to_int Uchar.min in
let max = Uchar.to_int Uchar.max in
let utf8 = Buffer.create (max * 4) in
let utf16 = Buffer.create (max * 4) in
let l = ref [] in
for i = max downto min do
if Uchar.is_valid i then l := Uchar.of_int i :: !l
done;
List.iter
(fun u ->
Buffer.add_utf_16be_uchar utf16 u;
Buffer.add_utf_8_uchar utf8 u)
!l;
let utf8 = Buffer.contents utf8 in
let utf16 = Buffer.contents utf16 in
let utf16' = Js.string utf8 in
let rec loop i =
if i / 2 >= utf16'##.length
then assert (i = String.length utf16)
else
let u_js =
utf16'##codePointAt (i / 2)
|> Js.Optdef.to_option
|> Option.get
|> Js.to_float
|> int_of_float
in
let u_ml, len =
let d = String.get_utf_16be_uchar utf16 i in
assert (Uchar.utf_decode_is_valid d);
let len = Uchar.utf_decode_length d in
Uchar.to_int (Uchar.utf_decode_uchar d), len
in
if u_js = u_ml
then loop (i + len)
else (
Printf.eprintf "%x <> %x\n" u_js u_ml;
Printf.eprintf "string differ at %x\n" i;
assert false)
in
loop 0;
let utf8' = Js.to_string utf16' in
for i = 0 to String.length utf8 - 1 do
if Char.equal (String.get utf8 i) (String.get utf8' i)
then ()
else (
Printf.eprintf "%C <> %C\n" (String.get utf8 i) (String.get utf8' i);
Printf.eprintf "string differ at %d\n" i;
())
done;
[%expect {||}]
|
