xref: /freebsd/lib/libc/stdtime/timelocal.c (revision d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
5  * Copyright (c) 1997 FreeBSD Inc.
6  * All rights reserved.
7  *
8  * Copyright (c) 2011 The FreeBSD Foundation
9  *
10  * Portions of this software were developed by David Chisnall
11  * under sponsorship from the FreeBSD Foundation.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include <sys/cdefs.h>
36 #include <stddef.h>
37 
38 #include "ldpart.h"
39 #include "timelocal.h"
40 
41 struct xlocale_time {
42 	struct xlocale_component header;
43 	char *buffer;
44 	struct lc_time_T locale;
45 };
46 
47 struct xlocale_time __xlocale_global_time;
48 
49 #define	LCTIME_SIZE (sizeof(struct lc_time_T) / sizeof(char *))
50 
51 static const struct lc_time_T	_C_time_locale = {
52 	{
53 		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
54 		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
55 	}, {
56 		"January", "February", "March", "April", "May", "June",
57 		"July", "August", "September", "October", "November", "December"
58 	}, {
59 		"Sun", "Mon", "Tue", "Wed",
60 		"Thu", "Fri", "Sat"
61 	}, {
62 		"Sunday", "Monday", "Tuesday", "Wednesday",
63 		"Thursday", "Friday", "Saturday"
64 	},
65 
66 	/* X_fmt */
67 	"%H:%M:%S",
68 
69 	/*
70 	 * x_fmt
71 	 * Since the C language standard calls for
72 	 * "date, using locale's date format," anything goes.
73 	 * Using just numbers (as here) makes Quakers happier;
74 	 * it's also compatible with SVR4.
75 	 */
76 	"%m/%d/%y",
77 
78 	/*
79 	 * c_fmt
80 	 */
81 	"%a %b %e %H:%M:%S %Y",
82 
83 	/* am */
84 	"AM",
85 
86 	/* pm */
87 	"PM",
88 
89 	/* date_fmt */
90 	"%a %b %e %H:%M:%S %Z %Y",
91 
92 	/* alt_month
93 	 * Standalone months forms for %OB
94 	 */
95 	{
96 		"January", "February", "March", "April", "May", "June",
97 		"July", "August", "September", "October", "November", "December"
98 	},
99 
100 	/* md_order
101 	 * Month / day order in dates
102 	 */
103 	"md",
104 
105 	/* ampm_fmt
106 	 * To determine 12-hour clock format time (empty, if N/A)
107 	 */
108 	"%I:%M:%S %p"
109 };
110 
111 static void destruct_time(void *v)
112 {
113 	struct xlocale_time *l = v;
114 	if (l->buffer)
115 		free(l->buffer);
116 	free(l);
117 }
118 
119 #include <stdio.h>
120 struct lc_time_T *
121 __get_current_time_locale(locale_t loc)
122 {
123 	return (loc->using_time_locale
124 		? &((struct xlocale_time *)loc->components[XLC_TIME])->locale
125 		: (struct lc_time_T *)&_C_time_locale);
126 }
127 
128 static int
129 time_load_locale(struct xlocale_time *l, int *using_locale, const char *name)
130 {
131 	struct lc_time_T *time_locale = &l->locale;
132 	return (__part_load_locale(name, using_locale,
133 			&l->buffer, "LC_TIME",
134 			LCTIME_SIZE, LCTIME_SIZE,
135 			(const char **)time_locale));
136 }
137 int
138 __time_load_locale(const char *name)
139 {
140 	return time_load_locale(&__xlocale_global_time,
141 			&__xlocale_global_locale.using_time_locale, name);
142 }
143 void* __time_load(const char* name, locale_t loc)
144 {
145 	struct xlocale_time *new = calloc(sizeof(struct xlocale_time), 1);
146 	new->header.header.destructor = destruct_time;
147 	if (time_load_locale(new, &loc->using_time_locale, name) == _LDP_ERROR)
148 	{
149 		xlocale_release(new);
150 		return NULL;
151 	}
152 	return new;
153 }
154 
155