xref: /illumos-gate/usr/src/lib/libc/port/locale/localeconv.c (revision 8d0c3d29bb99f6521f2dc5058a7e4debebad7899)
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 /*
32  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
33  * Use is subject to license terms.
34  */
35 
36 #ifndef	_LCONV_C99
37 #define	_LCONV_C99	/* so we get all the extensions */
38 #endif
39 
40 #include "lint.h"
41 #include <locale.h>
42 #include "lmonetary.h"
43 #include "lnumeric.h"
44 
45 /*
46  * The localeconv() function constructs a struct lconv from the current
47  * monetary and numeric locales.
48  *
49  * Because localeconv() may be called many times (especially by library
50  * routines like printf() & strtod()), the approprate members of the
51  * lconv structure are computed only when the monetary or numeric
52  * locale has been changed.
53  */
54 int __mlocale_changed = 1;
55 int __nlocale_changed = 1;
56 
57 /*
58  * Return the current locale conversion.
59  */
60 struct lconv *
61 localeconv(void)
62 {
63 	static struct lconv ret;
64 
65 	if (__mlocale_changed) {
66 		/* LC_MONETARY part */
67 		struct lc_monetary_T *mptr;
68 
69 #define	M_ASSIGN_STR(NAME) (ret.NAME = (char *)mptr->NAME)
70 #define	M_ASSIGN_CHAR(NAME) (ret.NAME = mptr->NAME[0])
71 
72 		mptr = __get_current_monetary_locale();
73 		M_ASSIGN_STR(int_curr_symbol);
74 		M_ASSIGN_STR(currency_symbol);
75 		M_ASSIGN_STR(mon_decimal_point);
76 		M_ASSIGN_STR(mon_thousands_sep);
77 		M_ASSIGN_STR(mon_grouping);
78 		M_ASSIGN_STR(positive_sign);
79 		M_ASSIGN_STR(negative_sign);
80 		M_ASSIGN_CHAR(int_frac_digits);
81 		M_ASSIGN_CHAR(frac_digits);
82 		M_ASSIGN_CHAR(p_cs_precedes);
83 		M_ASSIGN_CHAR(p_sep_by_space);
84 		M_ASSIGN_CHAR(n_cs_precedes);
85 		M_ASSIGN_CHAR(n_sep_by_space);
86 		M_ASSIGN_CHAR(p_sign_posn);
87 		M_ASSIGN_CHAR(n_sign_posn);
88 		M_ASSIGN_CHAR(int_p_cs_precedes);
89 		M_ASSIGN_CHAR(int_n_cs_precedes);
90 		M_ASSIGN_CHAR(int_p_sep_by_space);
91 		M_ASSIGN_CHAR(int_n_sep_by_space);
92 		M_ASSIGN_CHAR(int_p_sign_posn);
93 		M_ASSIGN_CHAR(int_n_sign_posn);
94 		__mlocale_changed = 0;
95 	}
96 
97 	if (__nlocale_changed) {
98 		/* LC_NUMERIC part */
99 		struct lc_numeric_T *nptr;
100 
101 #define	N_ASSIGN_STR(NAME) (ret.NAME = (char *)nptr->NAME)
102 
103 		nptr = __get_current_numeric_locale();
104 		N_ASSIGN_STR(decimal_point);
105 		N_ASSIGN_STR(thousands_sep);
106 		N_ASSIGN_STR(grouping);
107 		__nlocale_changed = 0;
108 	}
109 
110 	return (&ret);
111 }
112