2 * Copyright (c) 1996 - 2002 FreeBSD Project
3 * Copyright (c) 1991, 1993
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6 * This code is derived from software contributed to Berkeley by
7 * Paul Borman at Krystal Technologies.
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33 * @(#)setlocale.c 8.1 (Berkeley) 7/4/93
34 * $FreeBSD: head/lib/libc/locale/setlocale.c 228921 2011-12-27 23:28:01Z jilles $
38 #include <sys/types.h>
43 #include <paths.h> /* for _PATH_LOCALE */
48 #include "lmonetary.h" /* for __monetary_load_locale() */
49 #include "lnumeric.h" /* for __numeric_load_locale() */
50 #include "lmessages.h" /* for __messages_load_locale() */
51 #include "setlocale.h"
53 #include "../stdtime/timelocal.h" /* for __time_load_locale() */
56 * Category names for getenv()
58 static const char categories[_LC_LAST][12] = {
69 * Current locales for each category
71 static char current_categories[_LC_LAST][ENCODING_LEN + 1] = {
82 * Path to locale storage directory
87 * The locales we are going to try and load
89 static char new_categories[_LC_LAST][ENCODING_LEN + 1];
90 static char saved_categories[_LC_LAST][ENCODING_LEN + 1];
92 static char current_locale_string[_LC_LAST * (ENCODING_LEN + 1/*"/"*/ + 1)];
94 static char *currentlocale(void);
95 static char *loadlocale(int);
96 const char *__get_locale_env(int);
97 int __get_locale_str(int category, const char *str, char * const res);
100 setlocale(int category, const char *locale)
102 int i, j, len, saverr;
104 char lres[ENCODING_LEN + 1] = "";
106 if (category < LC_ALL || category >= _LC_LAST) {
112 return (category != LC_ALL ?
113 current_categories[category] : currentlocale());
116 * Default to the current locale for everything.
118 for (i = 1; i < _LC_LAST; ++i)
119 (void)strcpy(new_categories[i], current_categories[i]);
122 * Now go fill up new_categories from the locale argument
125 if (category == LC_ALL) {
126 for (i = 1; i < _LC_LAST; ++i) {
127 env = __get_locale_env(i);
128 if (strlen(env) > ENCODING_LEN) {
132 (void)strcpy(new_categories[i], env);
135 env = __get_locale_env(category);
136 if (strlen(env) > ENCODING_LEN) {
140 (void)strcpy(new_categories[category], env);
142 } else if (category != LC_ALL) {
143 if (strlen(locale) > ENCODING_LEN) {
147 (void)strcpy(new_categories[category], locale);
149 if ((r = strchr(locale, '/')) != NULL) {
150 for (i = 1; r[1] == '/'; ++r)
154 return (NULL); /* Hmm, just slashes... */
158 break; /* Too many slashes... */
159 if ((len = r - locale) > ENCODING_LEN) {
163 (void)strlcpy(new_categories[i], locale,
169 while (*r && *r != '/')
172 while (i < _LC_LAST) {
173 (void)strcpy(new_categories[i],
174 new_categories[i - 1]);
177 } else if ('L' == locale[0] && strchr(locale, ';')) {
178 for (i = 1; i < _LC_LAST; ++i) {
179 __get_locale_str(i, locale, lres);
180 (void)strcpy(new_categories[i], lres);
183 if (strlen(locale) > ENCODING_LEN) {
187 for (i = 1; i < _LC_LAST; ++i)
188 (void)strcpy(new_categories[i], locale);
192 if (category != LC_ALL)
193 return (loadlocale(category));
195 for (i = 1; i < _LC_LAST; ++i) {
196 (void)strcpy(saved_categories[i], current_categories[i]);
197 if (loadlocale(i) == NULL) {
199 for (j = 1; j < i; j++) {
200 (void)strcpy(new_categories[j],
201 saved_categories[j]);
202 if (loadlocale(j) == NULL) {
203 (void)strcpy(new_categories[j], "C");
211 return (currentlocale());
219 (void)strcpy(current_locale_string, current_categories[1]);
221 for (i = 2; i < _LC_LAST; ++i)
222 if (strcmp(current_categories[1], current_categories[i])) {
223 for (i = 2; i < _LC_LAST; ++i) {
224 (void)strcat(current_locale_string, "/");
225 (void)strcat(current_locale_string,
226 current_categories[i]);
230 return (current_locale_string);
234 loadlocale(int category)
236 char *new = new_categories[category];
237 char *old = current_categories[category];
238 int (*func)(const char *);
241 if ((new[0] == '.' &&
242 (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) ||
243 strchr(new, '/') != NULL) {
249 errno = __detect_path_locale();
256 func = __wrap_setrunelocale;
259 func = __collate_load_tables;
262 func = __time_load_locale;
265 func = __numeric_load_locale;
268 func = __monetary_load_locale;
271 func = __messages_load_locale;
278 if (strcmp(new, old) == 0)
281 if (func(new) != _LDP_ERROR) {
282 (void)strcpy(old, new);
283 (void)strcpy(__xlocale_global_locale.components[category-1]->locale, new);
291 getlocstr(const char *name, const char *str, char * const res)
298 while ((cp = strchr (np, '=')) != NULL) {
299 if (!strncmp(np, name, (cp - np))) {
301 cp = strchr(cp, ';');
303 cp = str + strlen(str);
305 if (len > ENCODING_LEN)
307 strncpy(res, np, len);
311 cp = strchr(cp, ';');
322 * Similar function like __get_locale_env() but from a string.
325 __get_locale_str(int category, const char *str, char * const res)
329 /* 1. check LC_ALL. */
330 check = getlocstr(categories[0], str, res);
334 check = getlocstr(categories[category], str, res);
338 check = getlocstr("LANG", str, res);
340 /* 4. if none is set, fall to "C" */
351 __get_locale_env(int category)
355 /* 1. check LC_ALL. */
356 env = getenv(categories[0]);
359 if (env == NULL || !*env)
360 env = getenv(categories[category]);
363 if (env == NULL || !*env)
364 env = getenv("LANG");
366 /* 4. if none is set, fall to "C" */
367 if (env == NULL || !*env)
374 * Detect locale storage location and store its value to _PathLocale variable
377 __detect_path_locale(void)
379 if (_PathLocale == NULL) {
380 char *p = getenv("PATH_LOCALE");
382 if (p != NULL && !issetugid()) {
383 if (strlen(p) + 1/*"/"*/ + ENCODING_LEN +
384 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX)
385 return (ENAMETOOLONG);
386 _PathLocale = strdup(p);
387 if (_PathLocale == NULL)
388 return (errno == 0 ? ENOMEM : errno);
390 _PathLocale = _PATH_LOCALE;