xref: /freebsd/lib/libc/locale/lmessages.c (revision 315ee00f)
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 <sys/cdefs.h>
35 #include <stddef.h>
36 
37 #include "ldpart.h"
38 #include "lmessages.h"
39 
40 #define LCMESSAGES_SIZE_FULL (sizeof(struct lc_messages_T) / sizeof(char *))
41 #define LCMESSAGES_SIZE_MIN \
42 		(offsetof(struct lc_messages_T, yesstr) / sizeof(char *))
43 
44 struct xlocale_messages {
45 	struct xlocale_component header;
46 	char *buffer;
47 	struct lc_messages_T locale;
48 };
49 
50 struct xlocale_messages __xlocale_global_messages;
51 
52 static char empty[] = "";
53 
54 static const struct lc_messages_T _C_messages_locale = {
55 	"^[yY]" ,	/* yesexpr */
56 	"^[nN]" ,	/* noexpr */
57 	"yes" , 	/* yesstr */
58 	"no"		/* nostr */
59 };
60 
61 static void
62 destruct_messages(void *v)
63 {
64 	struct xlocale_messages *l = v;
65 	if (l->buffer)
66 		free(l->buffer);
67 	free(l);
68 }
69 
70 static int
71 messages_load_locale(struct xlocale_messages *loc, int *using_locale,
72     const char *name)
73 {
74 	int ret;
75 	struct lc_messages_T *l = &loc->locale;
76 
77 	ret = __part_load_locale(name, using_locale,
78 		  &loc->buffer, "LC_MESSAGES",
79 		  LCMESSAGES_SIZE_FULL, LCMESSAGES_SIZE_MIN,
80 		  (const char **)l);
81 	if (ret == _LDP_LOADED) {
82 		if (l->yesstr == NULL)
83 			l->yesstr = empty;
84 		if (l->nostr == NULL)
85 			l->nostr = empty;
86 	}
87 	return (ret);
88 }
89 
90 int
91 __messages_load_locale(const char *name)
92 {
93 	return (messages_load_locale(&__xlocale_global_messages,
94 	    &__xlocale_global_locale.using_messages_locale, name));
95 }
96 
97 void *
98 __messages_load(const char *name, locale_t l)
99 {
100 	struct xlocale_messages *new = calloc(sizeof(struct xlocale_messages),
101 	    1);
102 	if (new == NULL)
103 		return (NULL);
104 	new->header.header.destructor = destruct_messages;
105 	if (messages_load_locale(new, &l->using_messages_locale, name) ==
106 	    _LDP_ERROR) {
107 		xlocale_release(new);
108 		return (NULL);
109 	}
110 	return (new);
111 }
112 
113 struct lc_messages_T *
114 __get_current_messages_locale(locale_t loc)
115 {
116 	return (loc->using_messages_locale ? &((struct xlocale_messages *)
117 	    loc->components[XLC_MESSAGES])->locale :
118 	    (struct lc_messages_T *)&_C_messages_locale);
119 }
120 
121 #ifdef LOCALE_DEBUG
122 void
123 msgdebug(void) {
124 printf(	"yesexpr = %s\n"
125 	"noexpr = %s\n"
126 	"yesstr = %s\n"
127 	"nostr = %s\n",
128 	_messages_locale.yesexpr,
129 	_messages_locale.noexpr,
130 	_messages_locale.yesstr,
131 	_messages_locale.nostr
132 );
133 }
134 #endif /* LOCALE_DEBUG */
135