2 * Copyright (c) 1996 - 2002 FreeBSD Project
3 * Copyright (c) 1991, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Paul Borman at Krystal Technologies.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid[] = "@(#)setlocale.c 8.1 (Berkeley) 7/4/93";
36 #endif /* LIBC_SCCS and not lint */
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/types.h>
45 #include <paths.h> /* for _PATH_LOCALE */
50 #include "lmonetary.h" /* for __monetary_load_locale() */
51 #include "lnumeric.h" /* for __numeric_load_locale() */
52 #include "lmessages.h" /* for __messages_load_locale() */
53 #include "setlocale.h"
55 #include "../stdtime/timelocal.h" /* for __time_load_locale() */
58 * Category names for getenv()
60 static const char categories[_LC_LAST][12] = {
71 * Current locales for each category
73 static char current_categories[_LC_LAST][ENCODING_LEN + 1] = {
84 * Path to locale storage directory
89 * The locales we are going to try and load
91 static char new_categories[_LC_LAST][ENCODING_LEN + 1];
92 static char saved_categories[_LC_LAST][ENCODING_LEN + 1];
94 static char current_locale_string[_LC_LAST * (ENCODING_LEN + 1/*"/"*/ + 1)];
96 static char *currentlocale(void);
97 static char *loadlocale(int);
98 const char *__get_locale_env(int);
101 setlocale(category, locale)
105 int i, j, len, saverr;
108 if (category < LC_ALL || category >= _LC_LAST) {
114 return (category != LC_ALL ?
115 current_categories[category] : currentlocale());
118 * Default to the current locale for everything.
120 for (i = 1; i < _LC_LAST; ++i)
121 (void)strcpy(new_categories[i], current_categories[i]);
124 * Now go fill up new_categories from the locale argument
127 if (category == LC_ALL) {
128 for (i = 1; i < _LC_LAST; ++i) {
129 env = __get_locale_env(i);
130 if (strlen(env) > ENCODING_LEN) {
134 (void)strcpy(new_categories[i], env);
137 env = __get_locale_env(category);
138 if (strlen(env) > ENCODING_LEN) {
142 (void)strcpy(new_categories[category], env);
144 } else if (category != LC_ALL) {
145 if (strlen(locale) > ENCODING_LEN) {
149 (void)strcpy(new_categories[category], locale);
151 if ((r = strchr(locale, '/')) == NULL) {
152 if (strlen(locale) > ENCODING_LEN) {
156 for (i = 1; i < _LC_LAST; ++i)
157 (void)strcpy(new_categories[i], locale);
159 for (i = 1; r[1] == '/'; ++r)
163 return (NULL); /* Hmm, just slashes... */
167 break; /* Too many slashes... */
168 if ((len = r - locale) > ENCODING_LEN) {
172 (void)strlcpy(new_categories[i], locale,
178 while (*r && *r != '/')
181 while (i < _LC_LAST) {
182 (void)strcpy(new_categories[i],
183 new_categories[i-1]);
189 if (category != LC_ALL)
190 return (loadlocale(category));
192 for (i = 1; i < _LC_LAST; ++i) {
193 (void)strcpy(saved_categories[i], current_categories[i]);
194 if (loadlocale(i) == NULL) {
196 for (j = 1; j < i; j++) {
197 (void)strcpy(new_categories[j],
198 saved_categories[j]);
199 if (loadlocale(j) == NULL) {
200 (void)strcpy(new_categories[j], "C");
208 return (currentlocale());
216 (void)strcpy(current_locale_string, current_categories[1]);
218 for (i = 2; i < _LC_LAST; ++i)
219 if (strcmp(current_categories[1], current_categories[i])) {
220 for (i = 2; i < _LC_LAST; ++i) {
221 (void)strcat(current_locale_string, "/");
222 (void)strcat(current_locale_string,
223 current_categories[i]);
227 return (current_locale_string);
234 char *new = new_categories[category];
235 char *old = current_categories[category];
236 int (*func)(const char *);
239 if ((new[0] == '.' &&
240 (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) ||
241 strchr(new, '/') != NULL) {
247 errno = __detect_path_locale();
254 func = __wrap_setrunelocale;
257 func = __collate_load_tables;
260 func = __time_load_locale;
263 func = __numeric_load_locale;
266 func = __monetary_load_locale;
269 func = __messages_load_locale;
276 if (strcmp(new, old) == 0)
279 if (func(new) != _LDP_ERROR) {
280 (void)strcpy(old, new);
281 (void)strcpy(__xlocale_global_locale.components[category-1]->locale, new);
289 __get_locale_env(category)
294 /* 1. check LC_ALL. */
295 env = getenv(categories[0]);
298 if (env == NULL || !*env)
299 env = getenv(categories[category]);
302 if (env == NULL || !*env)
303 env = getenv("LANG");
305 /* 4. if none is set, fall to "C" */
306 if (env == NULL || !*env)
313 * Detect locale storage location and store its value to _PathLocale variable
316 __detect_path_locale(void)
318 if (_PathLocale == NULL) {
319 char *p = getenv("PATH_LOCALE");
321 if (p != NULL && !issetugid()) {
322 if (strlen(p) + 1/*"/"*/ + ENCODING_LEN +
323 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX)
324 return (ENAMETOOLONG);
325 _PathLocale = strdup(p);
326 if (_PathLocale == NULL)
327 return (errno == 0 ? ENOMEM : errno);
329 _PathLocale = _PATH_LOCALE;