1/*-
2 * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
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
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: src/lib/libc/stdtime/timelocal.c,v 1.25 2003/06/13 00:14:07 jkh Exp $");
30
31#include "xlocale_private.h"
32
33#include <stddef.h>
34#include <string.h>
35
36#include "ldpart.h"
37#include "timelocal.h"
38
39#define LCTIME_SIZE (sizeof(struct lc_time_T) / sizeof(char *))
40
41static const struct lc_time_T	_C_time_locale = {
42	{
43		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
44		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
45	}, {
46		"January", "February", "March", "April", "May", "June",
47		"July", "August", "September", "October", "November", "December"
48	}, {
49		"Sun", "Mon", "Tue", "Wed",
50		"Thu", "Fri", "Sat"
51	}, {
52		"Sunday", "Monday", "Tuesday", "Wednesday",
53		"Thursday", "Friday", "Saturday"
54	},
55
56	/* X_fmt */
57	"%H:%M:%S",
58
59	/*
60	 * x_fmt
61	 * Since the C language standard calls for
62	 * "date, using locale's date format," anything goes.
63	 * Using just numbers (as here) makes Quakers happier;
64	 * it's also compatible with SVR4.
65	 */
66	"%m/%d/%y",
67
68	/*
69	 * c_fmt
70	 */
71	"%a %b %e %H:%M:%S %Y",
72
73	/* am */
74	"AM",
75
76	/* pm */
77	"PM",
78
79	/* date_fmt */
80	"%a %b %e %H:%M:%S %Z %Y",
81
82	/* alt_month
83	 * Standalone months forms for %OB
84	 */
85	{
86		"January", "February", "March", "April", "May", "June",
87		"July", "August", "September", "October", "November", "December"
88	},
89
90	/* md_order
91	 * Month / day order in dates
92	 */
93	"md",
94
95	/* ampm_fmt
96	 * To determine 12-hour clock format time (empty, if N/A)
97	 */
98	"%I:%M:%S %p"
99};
100
101__private_extern__ struct lc_time_T *
102__get_current_time_locale(locale_t loc)
103{
104	return (loc->_time_using_locale
105		? &loc->__lc_time->_time_locale
106		: (struct lc_time_T *)&_C_time_locale);
107}
108
109__private_extern__ int
110__time_load_locale(const char *name, locale_t loc)
111{
112	int ret;
113	struct __xlocale_st_time *xp;
114	static struct __xlocale_st_time *cache = NULL;
115
116	/* 'name' must be already checked. */
117	if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) {
118		loc->_time_using_locale = 0;
119		XL_RELEASE(loc->__lc_time);
120		loc->__lc_time = NULL;
121		return (_LDP_CACHE);
122	}
123
124	/*
125	 * If the locale name is the same as our cache, use the cache.
126	 */
127	if (cache && cache->_time_locale_buf && strcmp(name, cache->_time_locale_buf) == 0) {
128		loc->_time_using_locale = 1;
129		XL_RELEASE(loc->__lc_time);
130		loc->__lc_time = cache;
131		XL_RETAIN(loc->__lc_time);
132		return (_LDP_CACHE);
133	}
134	if ((xp = (struct __xlocale_st_time *)malloc(sizeof(*xp))) == NULL)
135		return _LDP_ERROR;
136	xp->__refcount = 1;
137	xp->__free_extra = (__free_extra_t)__ldpart_free_extra;
138	xp->_time_locale_buf = NULL;
139
140	ret = __part_load_locale(name, &loc->_time_using_locale,
141			&xp->_time_locale_buf, "LC_TIME",
142			LCTIME_SIZE, LCTIME_SIZE,
143			(const char **)&xp->_time_locale);
144	if (ret == _LDP_LOADED) {
145		XL_RELEASE(loc->__lc_time);
146		loc->__lc_time = xp;
147		XL_RELEASE(cache);
148		cache = xp;
149		XL_RETAIN(cache);
150	} else if (ret == _LDP_ERROR)
151		free(xp);
152
153	return (ret);
154}
155