1 /* $NetBSD: newlocale.c,v 1.3 2013/09/13 13:13:32 joerg Exp $ */
2
3 /*-
4 * Copyright (c)2008, 2011 Citrus Project,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __RCSID("$NetBSD: newlocale.c,v 1.3 2013/09/13 13:13:32 joerg Exp $");
31
32 #include "namespace.h"
33 #include <assert.h>
34 #include <errno.h>
35 #include <locale.h>
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include "setlocale_local.h"
40
__weak_alias(newlocale,_newlocale)41 __weak_alias(newlocale, _newlocale)
42
43 locale_t
44 newlocale(int mask, const char *name, locale_t src)
45 {
46 struct _locale *dst;
47 char head[_LOCALENAME_LEN_MAX * (_LC_LAST - 1)], *tail;
48 const char *tokens[_LC_LAST - 1];
49 _locale_set_t l;
50 int i, howmany, categories[_LC_LAST - 1];
51
52 if (name == NULL)
53 name = _C_LOCALE;
54 dst = malloc(sizeof(*dst));
55 if (dst == NULL)
56 return (locale_t)NULL;
57 if (src == NULL)
58 src = _current_locale();
59 memcpy(dst, src, sizeof(*src));
60 strlcpy(&head[0], name, sizeof(head));
61 tokens[0] = (const char *)&head[0];
62 tail = strchr(tokens[0], '/');
63 if (tail == NULL) {
64 for (i = 1; i < _LC_LAST; ++i) {
65 if (mask & (1 << i)) {
66 l = _find_category(i);
67 _DIAGASSERT(l != NULL);
68 (*l)(tokens[0], dst);
69 }
70 }
71 } else {
72 *tail++ = '\0';
73 howmany = 0;
74 for (i = 1; i < _LC_LAST; ++i) {
75 if (mask & (1 << i))
76 categories[howmany++] = i;
77 }
78 if (howmany-- > 0) {
79 for (i = 1; i < howmany; ++i) {
80 tokens[i] = (const char *)tail;
81 tail = strchr(tokens[i], '/');
82 if (tail == NULL) {
83 free(dst);
84 return NULL;
85 }
86 }
87 tokens[howmany] = tail;
88 tail = strchr(tokens[howmany], '/');
89 if (tail != NULL) {
90 free(dst);
91 return NULL;
92 }
93 for (i = 0; i <= howmany; ++i) {
94 l = _find_category(categories[i]);
95 _DIAGASSERT(l != NULL);
96 (*l)(tokens[i], dst);
97 }
98 }
99 }
100 if (_setlocale_cache(dst, NULL)) {
101 free(dst);
102 return NULL;
103 }
104 return (locale_t)dst;
105 }
106