xref: /freebsd/lib/libc/locale/localeconv.c (revision 81b22a98)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
5  * Copyright (c) 1991, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * Copyright (c) 2011 The FreeBSD Foundation
9  * All rights reserved.
10  * Portions of this software were developed by David Chisnall
11  * under sponsorship from the FreeBSD Foundation.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. Neither the name of the University nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  */
37 
38 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)localeconv.c	8.1 (Berkeley) 6/4/93";
40 #endif /* LIBC_SCCS and not lint */
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
43 
44 #include <locale.h>
45 
46 #include "lmonetary.h"
47 #include "lnumeric.h"
48 
49 /*
50  * The localeconv() function constructs a struct lconv from the current
51  * monetary and numeric locales.
52  *
53  * Because localeconv() may be called many times (especially by library
54  * routines like printf() & strtod()), the approprate members of the
55  * lconv structure are computed only when the monetary or numeric
56  * locale has been changed.
57  */
58 
59 /*
60  * Return the current locale conversion.
61  */
62 struct lconv *
63 localeconv_l(locale_t loc)
64 {
65 	FIX_LOCALE(loc);
66     struct lconv *ret = &loc->lconv;
67 
68     if (atomic_load_acq_int(&loc->monetary_locale_changed) != 0) {
69 	/* LC_MONETARY part */
70         struct lc_monetary_T * mptr;
71 
72 #define M_ASSIGN_STR(NAME) (ret->NAME = (char*)mptr->NAME)
73 #define M_ASSIGN_CHAR(NAME) (ret->NAME = mptr->NAME[0])
74 
75 	mptr = __get_current_monetary_locale(loc);
76 	M_ASSIGN_STR(int_curr_symbol);
77 	M_ASSIGN_STR(currency_symbol);
78 	M_ASSIGN_STR(mon_decimal_point);
79 	M_ASSIGN_STR(mon_thousands_sep);
80 	M_ASSIGN_STR(mon_grouping);
81 	M_ASSIGN_STR(positive_sign);
82 	M_ASSIGN_STR(negative_sign);
83 	M_ASSIGN_CHAR(int_frac_digits);
84 	M_ASSIGN_CHAR(frac_digits);
85 	M_ASSIGN_CHAR(p_cs_precedes);
86 	M_ASSIGN_CHAR(p_sep_by_space);
87 	M_ASSIGN_CHAR(n_cs_precedes);
88 	M_ASSIGN_CHAR(n_sep_by_space);
89 	M_ASSIGN_CHAR(p_sign_posn);
90 	M_ASSIGN_CHAR(n_sign_posn);
91 	M_ASSIGN_CHAR(int_p_cs_precedes);
92 	M_ASSIGN_CHAR(int_n_cs_precedes);
93 	M_ASSIGN_CHAR(int_p_sep_by_space);
94 	M_ASSIGN_CHAR(int_n_sep_by_space);
95 	M_ASSIGN_CHAR(int_p_sign_posn);
96 	M_ASSIGN_CHAR(int_n_sign_posn);
97 	atomic_store_int(&loc->monetary_locale_changed, 0);
98     }
99 
100     if (atomic_load_acq_int(&loc->numeric_locale_changed) != 0) {
101 	/* LC_NUMERIC part */
102         struct lc_numeric_T * nptr;
103 
104 #define N_ASSIGN_STR(NAME) (ret->NAME = (char*)nptr->NAME)
105 
106 	nptr = __get_current_numeric_locale(loc);
107 	N_ASSIGN_STR(decimal_point);
108 	N_ASSIGN_STR(thousands_sep);
109 	N_ASSIGN_STR(grouping);
110 	atomic_store_int(&loc->numeric_locale_changed, 0);
111     }
112 
113     return ret;
114 }
115 struct lconv *
116 localeconv(void)
117 {
118 	return localeconv_l(__get_locale());
119 }
120