1/*
2 * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: src/lib/libc/locale/lmessages.c,v 1.14 2003/06/26 10:46:16 phantom Exp $");
29
30#include "xlocale_private.h"
31
32#include <stddef.h>
33#include <string.h>
34
35#include "ldpart.h"
36#include "lmessages.h"
37
38#define LCMESSAGES_SIZE_FULL (sizeof(struct lc_messages_T) / sizeof(char *))
39#define LCMESSAGES_SIZE_MIN \
40		(offsetof(struct lc_messages_T, yesstr) / sizeof(char *))
41
42static char empty[] = "";
43
44static const struct lc_messages_T _C_messages_locale = {
45	"^[yY]" ,	/* yesexpr */
46	"^[nN]" ,	/* noexpr */
47	"yes" , 	/* yesstr */
48	"no"		/* nostr */
49};
50
51__private_extern__ int
52__messages_load_locale(const char *name, locale_t loc)
53{
54	int ret;
55	struct __xlocale_st_messages *xp;
56	static struct __xlocale_st_messages *cache = NULL;
57
58	/* 'name' must be already checked. */
59	if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) {
60		loc->_messages_using_locale = 0;
61		XL_RELEASE(loc->__lc_messages);
62		loc->__lc_messages = NULL;
63		return (_LDP_CACHE);
64	}
65
66	/*
67	 * If the locale name is the same as our cache, use the cache.
68	 */
69	if (cache && cache->_messages_locale_buf && strcmp(name, cache->_messages_locale_buf) == 0) {
70		loc->_messages_using_locale = 1;
71		XL_RELEASE(loc->__lc_messages);
72		loc->__lc_messages = cache;
73		XL_RETAIN(loc->__lc_messages);
74		return (_LDP_CACHE);
75	}
76	if ((xp = (struct __xlocale_st_messages *)malloc(sizeof(*xp))) == NULL)
77		return _LDP_ERROR;
78	xp->__refcount = 1;
79	xp->__free_extra = (__free_extra_t)__ldpart_free_extra;
80	xp->_messages_locale_buf = NULL;
81
82	ret = __part_load_locale(name, &loc->_messages_using_locale,
83		  &xp->_messages_locale_buf, "LC_MESSAGES/LC_MESSAGES",
84		  LCMESSAGES_SIZE_FULL, LCMESSAGES_SIZE_MIN,
85		  (const char **)&xp->_messages_locale);
86	if (ret == _LDP_LOADED) {
87		if (xp->_messages_locale.yesstr == NULL)
88			xp->_messages_locale.yesstr = empty;
89		if (xp->_messages_locale.nostr == NULL)
90			xp->_messages_locale.nostr = empty;
91		XL_RELEASE(loc->__lc_messages);
92		loc->__lc_messages = xp;
93		XL_RELEASE(cache);
94		cache = xp;
95		XL_RETAIN(cache);
96	} else if (ret == _LDP_ERROR)
97		free(xp);
98	return (ret);
99}
100
101__private_extern__ struct lc_messages_T *
102__get_current_messages_locale(locale_t loc)
103{
104	return (loc->_messages_using_locale
105		? &loc->__lc_messages->_messages_locale
106		: (struct lc_messages_T *)&_C_messages_locale);
107}
108
109#ifdef LOCALE_DEBUG
110void
111msgdebug() {
112locale_t loc = __current_locale();
113printf(	"yesexpr = %s\n"
114	"noexpr = %s\n"
115	"yesstr = %s\n"
116	"nostr = %s\n",
117	loc->__lc_messages->_messages_locale.yesexpr,
118	loc->__lc_messages->_messages_locale.noexpr,
119	loc->__lc_messages->_messages_locale.yesstr,
120	loc->__lc_messages->_messages_locale.nostr
121);
122}
123#endif /* LOCALE_DEBUG */
124