xref: /illumos-gate/usr/src/lib/libc/port/locale/lnumeric.c (revision 2c5ec7a875dcd76853e6618614e990f1e8cdd56d)
1 /*
2  * Copyright 2014 Garrett D'Amore.
3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
4  * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include "lint.h"
30 #include <limits.h>
31 #include <errno.h>
32 #include "ldpart.h"
33 #include "lnumeric.h"
34 #include "localeimpl.h"
35 
36 extern const char *__fix_locale_grouping_str(const char *);
37 
38 #define	LCNUMERIC_SIZE (sizeof (struct lc_numeric) / sizeof (char *))
39 
40 static char	numempty[] = { CHAR_MAX, '\0' };
41 
42 struct lc_numeric lc_numeric_posix = {
43 	".",		/* decimal_point */
44 	"",		/* thousands_sep */
45 	numempty	/* grouping */
46 };
47 
48 struct locdata __posix_numeric_locdata = {
49 	.l_lname = "C",
50 	.l_data = { &lc_numeric_posix }
51 };
52 
53 
54 /*
55  * Return the locale's numeric locdata structure.
56  */
57 struct locdata *
58 __lc_numeric_load(const char *name)
59 {
60 	struct locdata *ldata;
61 	struct lc_numeric *lnum;
62 	int ret;
63 
64 	if ((ldata = __locdata_alloc(name, sizeof (*lnum))) == NULL) {
65 		errno = EINVAL;
66 		return (NULL);
67 	}
68 	lnum = ldata->l_data[0];
69 
70 	ret = __part_load_locale(name, (char **)&ldata->l_data[1],
71 	    "LC_NUMERIC", LCNUMERIC_SIZE, LCNUMERIC_SIZE, (const char **)lnum);
72 
73 	if (ret != _LDP_LOADED) {
74 		__locdata_free(ldata);
75 		return (NULL);
76 	}
77 
78 	/* Can't be empty according to C99 */
79 	if (*lnum->decimal_point == '\0')
80 		lnum->decimal_point = lc_numeric_posix.decimal_point;
81 	lnum->grouping = __fix_locale_grouping_str(lnum->grouping);
82 
83 	return (ldata);
84 }
85