1 /* $NetBSD: setlocale.c,v 1.66 2024/06/08 21:35:18 joerg Exp $ */ 2 3 /*- 4 * Copyright (c)2008 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 #if defined(LIBC_SCCS) && !defined(lint) 31 __RCSID("$NetBSD: setlocale.c,v 1.66 2024/06/08 21:35:18 joerg Exp $"); 32 #endif /* LIBC_SCCS and not lint */ 33 34 #include "namespace.h" 35 #include <sys/types.h> 36 #include <sys/localedef.h> 37 #include <locale.h> 38 #include <limits.h> 39 #include <paths.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 #include "setlocale_local.h" 45 46 const char *_PathLocale = NULL; 47 48 static _locale_set_t all_categories[_LC_LAST] = { 49 [LC_ALL ] = &_generic_LC_ALL_setlocale, 50 [LC_COLLATE ] = &_dummy_LC_COLLATE_setlocale, 51 [LC_CTYPE ] = &_citrus_LC_CTYPE_setlocale, 52 [LC_MONETARY] = &_citrus_LC_MONETARY_setlocale, 53 [LC_NUMERIC ] = &_citrus_LC_NUMERIC_setlocale, 54 [LC_TIME ] = &_citrus_LC_TIME_setlocale, 55 [LC_MESSAGES] = &_citrus_LC_MESSAGES_setlocale, 56 }; 57 58 /* XXX Consider locking the list. Race condition leaks memory. */ 59 static SLIST_HEAD(, _locale_cache_t) caches = { 60 __UNCONST(&_C_cache) 61 }; 62 63 int 64 _setlocale_cache(locale_t loc, struct _locale_cache_t *cache) 65 { 66 const char *monetary_name = loc->part_name[LC_MONETARY]; 67 const char *numeric_name = loc->part_name[LC_NUMERIC]; 68 const char *message_name = loc->part_name[LC_MESSAGES]; 69 _NumericLocale *numeric = loc->part_impl[LC_NUMERIC]; 70 _MonetaryLocale *monetary = loc->part_impl[LC_MONETARY]; 71 struct lconv *ldata; 72 73 struct _locale_cache_t *old_cache; 74 75 SLIST_FOREACH(old_cache, &caches, cache_link) { 76 if (monetary_name != old_cache->monetary_name && 77 strcmp(monetary_name, old_cache->monetary_name) != 0) 78 continue; 79 if (numeric_name != old_cache->numeric_name && 80 strcmp(numeric_name, old_cache->numeric_name) != 0) 81 continue; 82 if (message_name != old_cache->message_name && 83 strcmp(message_name, old_cache->message_name) != 0) 84 continue; 85 loc->cache = old_cache; 86 free(cache); 87 return 0; 88 } 89 90 if (cache == NULL) { 91 cache = malloc(sizeof(*cache)); 92 if (cache == NULL) 93 return -1; 94 } 95 96 cache->monetary_name = monetary_name; 97 cache->numeric_name = numeric_name; 98 cache->message_name = message_name; 99 cache->errlist = NULL; 100 cache->errlistp = &cache->errlist; 101 cache->errlist_prefix = NULL; 102 ldata = &cache->ldata; 103 104 ldata->decimal_point = __UNCONST(numeric->decimal_point); 105 ldata->thousands_sep = __UNCONST(numeric->thousands_sep); 106 ldata->grouping = __UNCONST(numeric->grouping); 107 108 ldata->int_curr_symbol = __UNCONST(monetary->int_curr_symbol); 109 ldata->currency_symbol = __UNCONST(monetary->currency_symbol); 110 ldata->mon_decimal_point = __UNCONST(monetary->mon_decimal_point); 111 ldata->mon_thousands_sep = __UNCONST(monetary->mon_thousands_sep); 112 ldata->mon_grouping = __UNCONST(monetary->mon_grouping); 113 ldata->positive_sign = __UNCONST(monetary->positive_sign); 114 ldata->negative_sign = __UNCONST(monetary->negative_sign); 115 116 ldata->int_frac_digits = monetary->int_frac_digits; 117 ldata->frac_digits = monetary->frac_digits; 118 ldata->p_cs_precedes = monetary->p_cs_precedes; 119 ldata->p_sep_by_space = monetary->p_sep_by_space; 120 ldata->n_cs_precedes = monetary->n_cs_precedes; 121 ldata->n_sep_by_space = monetary->n_sep_by_space; 122 ldata->p_sign_posn = monetary->p_sign_posn; 123 ldata->n_sign_posn = monetary->n_sign_posn; 124 ldata->int_p_cs_precedes = monetary->int_p_cs_precedes; 125 ldata->int_n_cs_precedes = monetary->int_n_cs_precedes; 126 ldata->int_p_sep_by_space = monetary-> int_p_sep_by_space; 127 ldata->int_n_sep_by_space = monetary->int_n_sep_by_space; 128 ldata->int_p_sign_posn = monetary->int_p_sign_posn; 129 ldata->int_n_sign_posn = monetary->int_n_sign_posn; 130 SLIST_INSERT_HEAD(&caches, cache, cache_link); 131 132 loc->cache = cache; 133 return 0; 134 } 135 136 _locale_set_t 137 _find_category(int category) 138 { 139 static int initialised; 140 141 if (!initialised) { 142 if (issetugid() || ((_PathLocale == NULL && 143 (_PathLocale = getenv("PATH_LOCALE")) == NULL) || 144 *_PathLocale == '\0')) 145 _PathLocale = _PATH_LOCALE; 146 initialised = 1; 147 } 148 149 if (category >= LC_ALL && category < _LC_LAST) 150 return all_categories[category]; 151 return NULL; 152 } 153 154 const char * 155 _get_locale_env(const char *category) 156 { 157 const char *name; 158 159 /* 1. check LC_ALL */ 160 name = (const char *)getenv("LC_ALL"); 161 if (name == NULL || *name == '\0') { 162 /* 2. check LC_* */ 163 name = (const char *)getenv(category); 164 if (name == NULL || *name == '\0') { 165 /* 3. check LANG */ 166 name = getenv("LANG"); 167 } 168 } 169 if (name == NULL || *name == '\0' || strchr(name, '/')) 170 /* 4. if none is set, fall to "C" */ 171 name = _C_LOCALE; 172 return name; 173 } 174 175 char * 176 __setlocale(int category, const char *name) 177 { 178 _locale_set_t sl; 179 locale_t loc; 180 struct _locale_cache_t *cache; 181 const char *result; 182 183 sl = _find_category(category); 184 if (sl == NULL) 185 return NULL; 186 cache = malloc(sizeof(*cache)); 187 if (cache == NULL) 188 return NULL; 189 loc = _current_locale(); 190 result = (*sl)(name, loc); 191 _setlocale_cache(loc, cache); 192 return __UNCONST(result); 193 } 194 195 char * 196 setlocale(int category, const char *locale) 197 { 198 199 /* locale may be NULL */ 200 201 __mb_len_max_runtime = MB_LEN_MAX; 202 return __setlocale(category, locale); 203 } 204
Indexes created Sun Sep 21 19:09:51 GMT 2025