1*9a4a12bdSRobert Mustacchi /*
2*9a4a12bdSRobert Mustacchi * This file and its contents are supplied under the terms of the
3*9a4a12bdSRobert Mustacchi * Common Development and Distribution License ("CDDL"), version 1.0.
4*9a4a12bdSRobert Mustacchi * You may only use this file in accordance with the terms of version
5*9a4a12bdSRobert Mustacchi * 1.0 of the CDDL.
6*9a4a12bdSRobert Mustacchi *
7*9a4a12bdSRobert Mustacchi * A full copy of the text of the CDDL should have accompanied this
8*9a4a12bdSRobert Mustacchi * source. A copy of the CDDL is also available via the Internet at
9*9a4a12bdSRobert Mustacchi * http://www.illumos.org/license/CDDL.
10*9a4a12bdSRobert Mustacchi */
11*9a4a12bdSRobert Mustacchi
12*9a4a12bdSRobert Mustacchi /*
13*9a4a12bdSRobert Mustacchi * Copyright 2020 Robert Mustacchi
14*9a4a12bdSRobert Mustacchi */
15*9a4a12bdSRobert Mustacchi
16*9a4a12bdSRobert Mustacchi /*
17*9a4a12bdSRobert Mustacchi * C11 mbrtoc32(3C) support.
18*9a4a12bdSRobert Mustacchi *
19*9a4a12bdSRobert Mustacchi * The char32_t type is designed to represent UTF-32. Conveniently, the wchar_t
20*9a4a12bdSRobert Mustacchi * is as well. In this case, we can just pass this directly to mbrtowc_l().
21*9a4a12bdSRobert Mustacchi */
22*9a4a12bdSRobert Mustacchi
23*9a4a12bdSRobert Mustacchi #include <locale.h>
24*9a4a12bdSRobert Mustacchi #include <wchar.h>
25*9a4a12bdSRobert Mustacchi #include <xlocale.h>
26*9a4a12bdSRobert Mustacchi #include <uchar.h>
27*9a4a12bdSRobert Mustacchi
28*9a4a12bdSRobert Mustacchi static mbstate_t mbrtoc32_state;
29*9a4a12bdSRobert Mustacchi
30*9a4a12bdSRobert Mustacchi size_t
mbrtoc32(char32_t * restrict pc32,const char * restrict str,size_t len,mbstate_t * restrict ps)31*9a4a12bdSRobert Mustacchi mbrtoc32(char32_t *restrict pc32, const char *restrict str, size_t len,
32*9a4a12bdSRobert Mustacchi mbstate_t *restrict ps)
33*9a4a12bdSRobert Mustacchi {
34*9a4a12bdSRobert Mustacchi if (ps == NULL) {
35*9a4a12bdSRobert Mustacchi ps = &mbrtoc32_state;
36*9a4a12bdSRobert Mustacchi }
37*9a4a12bdSRobert Mustacchi
38*9a4a12bdSRobert Mustacchi if (str == NULL) {
39*9a4a12bdSRobert Mustacchi pc32 = NULL;
40*9a4a12bdSRobert Mustacchi str = "";
41*9a4a12bdSRobert Mustacchi len = 1;
42*9a4a12bdSRobert Mustacchi }
43*9a4a12bdSRobert Mustacchi
44*9a4a12bdSRobert Mustacchi return (mbrtowc_l((wchar_t *)pc32, str, len, ps,
45*9a4a12bdSRobert Mustacchi uselocale((locale_t)0)));
46*9a4a12bdSRobert Mustacchi }
47