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 c32rtomb(3C) support. 18*9a4a12bdSRobert Mustacchi * 19*9a4a12bdSRobert Mustacchi * The char32_t type is designed to represent a UTF-32 value, which is what we 20*9a4a12bdSRobert Mustacchi * can represent with a wchar_t. This is basically a wrapper around wcrtomb(). 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 #include <errno.h> 28*9a4a12bdSRobert Mustacchi #include "unicode.h" 29*9a4a12bdSRobert Mustacchi 30*9a4a12bdSRobert Mustacchi static mbstate_t c32rtomb_state; 31*9a4a12bdSRobert Mustacchi 32*9a4a12bdSRobert Mustacchi size_t 33*9a4a12bdSRobert Mustacchi c32rtomb(char *restrict str, char32_t c32, mbstate_t *restrict ps) 34*9a4a12bdSRobert Mustacchi { 35*9a4a12bdSRobert Mustacchi if ((c32 >= UNICODE_SUR_MIN && c32 <= UNICODE_SUR_MAX) || 36*9a4a12bdSRobert Mustacchi c32 > UNICODE_SUP_MAX) { 37*9a4a12bdSRobert Mustacchi errno = EILSEQ; 38*9a4a12bdSRobert Mustacchi return ((size_t)-1); 39*9a4a12bdSRobert Mustacchi } 40*9a4a12bdSRobert Mustacchi 41*9a4a12bdSRobert Mustacchi if (ps == NULL) { 42*9a4a12bdSRobert Mustacchi ps = &c32rtomb_state; 43*9a4a12bdSRobert Mustacchi } 44*9a4a12bdSRobert Mustacchi 45*9a4a12bdSRobert Mustacchi if (str == NULL) { 46*9a4a12bdSRobert Mustacchi c32 = L'\0'; 47*9a4a12bdSRobert Mustacchi } 48*9a4a12bdSRobert Mustacchi 49*9a4a12bdSRobert Mustacchi return (wcrtomb_l(str, (wchar_t)c32, ps, uselocale((locale_t)0))); 50*9a4a12bdSRobert Mustacchi } 51