timelocal.c revision 73359 
1/*-
2 * Copyright (c) 2001 Alexey Zelkin
3 * Copyright (c) 1997 FreeBSD Inc.
4 * 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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/lib/libc/stdtime/timelocal.c 73359 2001-03-02 22:10:04Z ache $
28 */
29
30#include <stddef.h>
31
32#include "ldpart.h"
33#include "timelocal.h"
34
35static struct lc_time_T _time_locale;
36static int _time_using_locale;
37static char * time_locale_buf;
38
39#define LCTIME_SIZE_FULL (sizeof(struct lc_time_T) / sizeof(char *))
40#define LCTIME_SIZE_MIN \
41		(offsetof(struct lc_time_T, ampm_fmt) / sizeof(char *))
42
43static const struct lc_time_T	_C_time_locale = {
44	{
45		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
46		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
47	}, {
48		"January", "February", "March", "April", "May", "June",
49		"July", "August", "September", "October", "November", "December"
50	}, {
51		"Sun", "Mon", "Tue", "Wed",
52		"Thu", "Fri", "Sat"
53	}, {
54		"Sunday", "Monday", "Tuesday", "Wednesday",
55		"Thursday", "Friday", "Saturday"
56	},
57
58	/* X_fmt */
59	"%H:%M:%S",
60
61	/*
62	** x_fmt
63	** Since the C language standard calls for
64	** "date, using locale's date format," anything goes.
65	** Using just numbers (as here) makes Quakers happier;
66	** it's also compatible with SVR4.
67	*/
68	"%m/%d/%y",
69
70	/*
71	** c_fmt (ctime-compatible)
72	*/
73	"%a %Ef %T %Y",
74
75	/* am */
76	"AM",
77
78	/* pm */
79	"PM",
80
81	/* date_fmt */
82	"%a %Ef %X %Z %Y",
83
84	{
85		"January", "February", "March", "April", "May", "June",
86		"July", "August", "September", "October", "November", "December"
87	},
88
89	/* Ef_fmt
90	** To determine short months / day order
91	*/
92	"%b %e",
93
94	/* EF_fmt
95	** To determine long months / day order
96	*/
97	"%B %e",
98
99	/* ampm_fmt
100	** To determine 12-hour clock format time (empty, if N/A)
101	*/
102	"%I:%M:%S %p"
103};
104
105struct lc_time_T *
106__get_current_time_locale(void) {
107	return (_time_using_locale
108		? &_time_locale
109		: (struct lc_time_T *)&_C_time_locale);
110}
111
112int
113__time_load_locale(const char *name) {
114
115	int	ret;
116
117	_time_locale.ampm_fmt = _C_time_locale.ampm_fmt;
118
119	ret = __part_load_locale(name, &_time_using_locale,
120			time_locale_buf, "LC_TIME",
121			LCTIME_SIZE_FULL, LCTIME_SIZE_MIN,
122			(const char **)&_time_locale);
123
124	/* XXX: always overwrite for ctime format parsing compatibility */
125	_time_locale.c_fmt = _C_time_locale.c_fmt;
126
127	return (ret);
128}
129