1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Copyright (c) 2011 The FreeBSD Foundation
8 *
9 * Portions of this software were developed by David Chisnall
10 * under sponsorship from the FreeBSD Foundation.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <limits.h>
35
36#include "ldpart.h"
37#include "lnumeric.h"
38
39extern const char *__fix_locale_grouping_str(const char *);
40
41#define LCNUMERIC_SIZE (sizeof(struct lc_numeric_T) / sizeof(char *))
42
43static char	numempty[] = { CHAR_MAX, '\0' };
44
45static const struct lc_numeric_T _C_numeric_locale = {
46	".",		/* decimal_point */
47	"",		/* thousands_sep */
48	numempty	/* grouping */
49};
50
51static void
52destruct_numeric(void *v)
53{
54	struct xlocale_numeric *l = v;
55	if (l->buffer)
56		free(l->buffer);
57	free(l);
58}
59
60struct xlocale_numeric __xlocale_global_numeric;
61
62static int
63numeric_load_locale(struct xlocale_numeric *loc, int *using_locale,
64    int *changed, const char *name)
65{
66	int ret;
67	struct lc_numeric_T *l = &loc->locale;
68
69	ret = __part_load_locale(name, using_locale,
70	    &loc->buffer, "LC_NUMERIC",
71	    LCNUMERIC_SIZE, LCNUMERIC_SIZE,
72	    (const char**)l);
73	if (ret == _LDP_LOADED) {
74		/* Can't be empty according to C99 */
75		if (*l->decimal_point == '\0')
76			l->decimal_point =
77			    _C_numeric_locale.decimal_point;
78		l->grouping =
79		    __fix_locale_grouping_str(l->grouping);
80	}
81	if (ret != _LDP_ERROR)
82		atomic_store_rel_int(changed, 1);
83	return (ret);
84}
85
86int
87__numeric_load_locale(const char *name)
88{
89	return (numeric_load_locale(&__xlocale_global_numeric,
90	    &__xlocale_global_locale.using_numeric_locale,
91	    &__xlocale_global_locale.numeric_locale_changed, name));
92}
93
94void *
95__numeric_load(const char *name, locale_t l)
96{
97	struct xlocale_numeric *new = calloc(sizeof(struct xlocale_numeric),
98	    1);
99	if (new == NULL)
100		return (NULL);
101	new->header.header.destructor = destruct_numeric;
102	if (numeric_load_locale(new, &l->using_numeric_locale,
103	    &l->numeric_locale_changed, name) == _LDP_ERROR) {
104		xlocale_release(new);
105		return (NULL);
106	}
107	return (new);
108}
109
110struct lc_numeric_T *
111__get_current_numeric_locale(locale_t loc)
112{
113	return (loc->using_numeric_locale ?
114	    &((struct xlocale_numeric *)loc->components[XLC_NUMERIC])->locale :
115	    (struct lc_numeric_T *)&_C_numeric_locale);
116}
117
118#ifdef LOCALE_DEBUG
119void
120numericdebug(void) {
121printf(	"decimal_point = %s\n"
122	"thousands_sep = %s\n"
123	"grouping = %s\n",
124	_numeric_locale.decimal_point,
125	_numeric_locale.thousands_sep,
126	_numeric_locale.grouping
127);
128}
129#endif /* LOCALE_DEBUG */
130