xref: /freebsd/lib/libc/locale/lmessages.c (revision e0c4386e)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 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 <stddef.h>
35 
36 #include "ldpart.h"
37 #include "lmessages.h"
38 
39 #define LCMESSAGES_SIZE_FULL (sizeof(struct lc_messages_T) / sizeof(char *))
40 #define LCMESSAGES_SIZE_MIN \
41 		(offsetof(struct lc_messages_T, yesstr) / sizeof(char *))
42 
43 struct xlocale_messages {
44 	struct xlocale_component header;
45 	char *buffer;
46 	struct lc_messages_T locale;
47 };
48 
49 struct xlocale_messages __xlocale_global_messages;
50 
51 static char empty[] = "";
52 
53 static const struct lc_messages_T _C_messages_locale = {
54 	"^[yY]" ,	/* yesexpr */
55 	"^[nN]" ,	/* noexpr */
56 	"yes" , 	/* yesstr */
57 	"no"		/* nostr */
58 };
59 
60 static void
61 destruct_messages(void *v)
62 {
63 	struct xlocale_messages *l = v;
64 	if (l->buffer)
65 		free(l->buffer);
66 	free(l);
67 }
68 
69 static int
70 messages_load_locale(struct xlocale_messages *loc, int *using_locale,
71     const char *name)
72 {
73 	int ret;
74 	struct lc_messages_T *l = &loc->locale;
75 
76 	ret = __part_load_locale(name, using_locale,
77 		  &loc->buffer, "LC_MESSAGES",
78 		  LCMESSAGES_SIZE_FULL, LCMESSAGES_SIZE_MIN,
79 		  (const char **)l);
80 	if (ret == _LDP_LOADED) {
81 		if (l->yesstr == NULL)
82 			l->yesstr = empty;
83 		if (l->nostr == NULL)
84 			l->nostr = empty;
85 	}
86 	return (ret);
87 }
88 
89 int
90 __messages_load_locale(const char *name)
91 {
92 	return (messages_load_locale(&__xlocale_global_messages,
93 	    &__xlocale_global_locale.using_messages_locale, name));
94 }
95 
96 void *
97 __messages_load(const char *name, locale_t l)
98 {
99 	struct xlocale_messages *new = calloc(sizeof(struct xlocale_messages),
100 	    1);
101 	if (new == NULL)
102 		return (NULL);
103 	new->header.header.destructor = destruct_messages;
104 	if (messages_load_locale(new, &l->using_messages_locale, name) ==
105 	    _LDP_ERROR) {
106 		xlocale_release(new);
107 		return (NULL);
108 	}
109 	return (new);
110 }
111 
112 struct lc_messages_T *
113 __get_current_messages_locale(locale_t loc)
114 {
115 	return (loc->using_messages_locale ? &((struct xlocale_messages *)
116 	    loc->components[XLC_MESSAGES])->locale :
117 	    (struct lc_messages_T *)&_C_messages_locale);
118 }
119 
120 #ifdef LOCALE_DEBUG
121 void
122 msgdebug(void) {
123 printf(	"yesexpr = %s\n"
124 	"noexpr = %s\n"
125 	"yesstr = %s\n"
126 	"nostr = %s\n",
127 	_messages_locale.yesexpr,
128 	_messages_locale.noexpr,
129 	_messages_locale.yesstr,
130 	_messages_locale.nostr
131 );
132 }
133 #endif /* LOCALE_DEBUG */
134