xref: /illumos-gate/usr/src/lib/libc/port/locale/localeconv.c (revision 45ede40b2394db7967e59f19288fae9b62efd4aa)
1 /*
2  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
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  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 4. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 #ifndef	_LCONV_C99
34 #define	_LCONV_C99	/* so we get all the extensions */
35 #endif
36 
37 #include "lint.h"
38 #include <locale.h>
39 #include "lmonetary.h"
40 #include "lnumeric.h"
41 #include "localeimpl.h"
42 
43 /*
44  * Return the current locale conversion.
45  *
46  * Note that XPG7 specifically states that localeconv's return value may
47  * be invalidated if the application calls setlocale() or uselocale() within
48  * the same thread.
49  *
50  * Because localeconv() may be called many times (especially by library
51  * routines like printf() & strtod()), the approprate members of the
52  * lconv structure are computed only when the monetary or numeric
53  * locale has been changed.
54  */
55 struct lconv *
56 localeconv(void)
57 {
58 	struct lconv	*lconv;
59 	locale_t	loc;
60 	struct lc_monetary	*mptr;
61 	struct lc_numeric	*nptr;
62 
63 	loc = uselocale(NULL);
64 	lconv = &loc->lconv;
65 
66 	if (loc->loaded[LC_MONETARY] == 0) {
67 		mptr = loc->locdata[LC_MONETARY]->l_data[0];
68 
69 #define	M_ASSIGN_STR(NAME) (lconv->NAME = (char *)mptr->NAME)
70 #define	M_ASSIGN_CHAR(NAME) (lconv->NAME = mptr->NAME[0])
71 
72 		M_ASSIGN_STR(int_curr_symbol);
73 		M_ASSIGN_STR(currency_symbol);
74 		M_ASSIGN_STR(mon_decimal_point);
75 		M_ASSIGN_STR(mon_thousands_sep);
76 		M_ASSIGN_STR(mon_grouping);
77 		M_ASSIGN_STR(positive_sign);
78 		M_ASSIGN_STR(negative_sign);
79 		M_ASSIGN_CHAR(int_frac_digits);
80 		M_ASSIGN_CHAR(frac_digits);
81 		M_ASSIGN_CHAR(p_cs_precedes);
82 		M_ASSIGN_CHAR(p_sep_by_space);
83 		M_ASSIGN_CHAR(n_cs_precedes);
84 		M_ASSIGN_CHAR(n_sep_by_space);
85 		M_ASSIGN_CHAR(p_sign_posn);
86 		M_ASSIGN_CHAR(n_sign_posn);
87 		M_ASSIGN_CHAR(int_p_cs_precedes);
88 		M_ASSIGN_CHAR(int_n_cs_precedes);
89 		M_ASSIGN_CHAR(int_p_sep_by_space);
90 		M_ASSIGN_CHAR(int_n_sep_by_space);
91 		M_ASSIGN_CHAR(int_p_sign_posn);
92 		M_ASSIGN_CHAR(int_n_sign_posn);
93 		loc->loaded[LC_MONETARY] = 1;
94 	}
95 
96 	if (loc->loaded[LC_NUMERIC] == 0) {
97 		nptr = loc->locdata[LC_NUMERIC]->l_data[0];
98 
99 #define	N_ASSIGN_STR(NAME) (lconv->NAME = (char *)nptr->NAME)
100 
101 		N_ASSIGN_STR(decimal_point);
102 		N_ASSIGN_STR(thousands_sep);
103 		N_ASSIGN_STR(grouping);
104 		loc->loaded[LC_NUMERIC] = 1;
105 	}
106 
107 	return (lconv);
108 }
109