xref: /freebsd/lib/libc/locale/localeconv.c (revision 39beb93c)
1 /*
2  * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
3  * Copyright (c) 1991, 1993
4  *	The Regents of the University of California.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 4. Neither the name of the University nor the names of its contributors
15  *    may be used to endorse or promote products derived from this software
16  *    without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  */
30 
31 #if defined(LIBC_SCCS) && !defined(lint)
32 static char sccsid[] = "@(#)localeconv.c	8.1 (Berkeley) 6/4/93";
33 #endif /* LIBC_SCCS and not lint */
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36 
37 #include <locale.h>
38 
39 #include "lmonetary.h"
40 #include "lnumeric.h"
41 
42 /*
43  * The localeconv() function constructs a struct lconv from the current
44  * monetary and numeric locales.
45  *
46  * Because localeconv() may be called many times (especially by library
47  * routines like printf() & strtod()), the approprate members of the
48  * lconv structure are computed only when the monetary or numeric
49  * locale has been changed.
50  */
51 int __mlocale_changed = 1;
52 int __nlocale_changed = 1;
53 
54 /*
55  * Return the current locale conversion.
56  */
57 struct lconv *
58 localeconv()
59 {
60     static struct lconv ret;
61 
62     if (__mlocale_changed) {
63 	/* LC_MONETARY part */
64         struct lc_monetary_T * mptr;
65 
66 #define M_ASSIGN_STR(NAME) (ret.NAME = (char*)mptr->NAME)
67 #define M_ASSIGN_CHAR(NAME) (ret.NAME = mptr->NAME[0])
68 
69 	mptr = __get_current_monetary_locale();
70 	M_ASSIGN_STR(int_curr_symbol);
71 	M_ASSIGN_STR(currency_symbol);
72 	M_ASSIGN_STR(mon_decimal_point);
73 	M_ASSIGN_STR(mon_thousands_sep);
74 	M_ASSIGN_STR(mon_grouping);
75 	M_ASSIGN_STR(positive_sign);
76 	M_ASSIGN_STR(negative_sign);
77 	M_ASSIGN_CHAR(int_frac_digits);
78 	M_ASSIGN_CHAR(frac_digits);
79 	M_ASSIGN_CHAR(p_cs_precedes);
80 	M_ASSIGN_CHAR(p_sep_by_space);
81 	M_ASSIGN_CHAR(n_cs_precedes);
82 	M_ASSIGN_CHAR(n_sep_by_space);
83 	M_ASSIGN_CHAR(p_sign_posn);
84 	M_ASSIGN_CHAR(n_sign_posn);
85 	M_ASSIGN_CHAR(int_p_cs_precedes);
86 	M_ASSIGN_CHAR(int_n_cs_precedes);
87 	M_ASSIGN_CHAR(int_p_sep_by_space);
88 	M_ASSIGN_CHAR(int_n_sep_by_space);
89 	M_ASSIGN_CHAR(int_p_sign_posn);
90 	M_ASSIGN_CHAR(int_n_sign_posn);
91 	__mlocale_changed = 0;
92     }
93 
94     if (__nlocale_changed) {
95 	/* LC_NUMERIC part */
96         struct lc_numeric_T * nptr;
97 
98 #define N_ASSIGN_STR(NAME) (ret.NAME = (char*)nptr->NAME)
99 
100 	nptr = __get_current_numeric_locale();
101 	N_ASSIGN_STR(decimal_point);
102 	N_ASSIGN_STR(thousands_sep);
103 	N_ASSIGN_STR(grouping);
104 	__nlocale_changed = 0;
105     }
106 
107     return (&ret);
108 }
109