1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Copyright (c) 2011 The FreeBSD Foundation 8 * All rights reserved. 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 __FBSDID("$FreeBSD$"); 36 37 #include <limits.h> 38 39 #include "ldpart.h" 40 #include "lnumeric.h" 41 42 extern const char *__fix_locale_grouping_str(const char *); 43 44 #define LCNUMERIC_SIZE (sizeof(struct lc_numeric_T) / sizeof(char *)) 45 46 static char numempty[] = { CHAR_MAX, '\0' }; 47 48 static const struct lc_numeric_T _C_numeric_locale = { 49 ".", /* decimal_point */ 50 "", /* thousands_sep */ 51 numempty /* grouping */ 52 }; 53 54 static void 55 destruct_numeric(void *v) 56 { 57 struct xlocale_numeric *l = v; 58 if (l->buffer) 59 free(l->buffer); 60 free(l); 61 } 62 63 struct xlocale_numeric __xlocale_global_numeric; 64 65 static int 66 numeric_load_locale(struct xlocale_numeric *loc, int *using_locale, 67 int *changed, const char *name) 68 { 69 int ret; 70 struct lc_numeric_T *l = &loc->locale; 71 72 ret = __part_load_locale(name, using_locale, 73 &loc->buffer, "LC_NUMERIC", 74 LCNUMERIC_SIZE, LCNUMERIC_SIZE, 75 (const char**)l); 76 if (ret == _LDP_LOADED) { 77 /* Can't be empty according to C99 */ 78 if (*l->decimal_point == '\0') 79 l->decimal_point = 80 _C_numeric_locale.decimal_point; 81 l->grouping = 82 __fix_locale_grouping_str(l->grouping); 83 } 84 if (ret != _LDP_ERROR) 85 atomic_store_rel_int(changed, 1); 86 return (ret); 87 } 88 89 int 90 __numeric_load_locale(const char *name) 91 { 92 return (numeric_load_locale(&__xlocale_global_numeric, 93 &__xlocale_global_locale.using_numeric_locale, 94 &__xlocale_global_locale.numeric_locale_changed, name)); 95 } 96 97 void * 98 __numeric_load(const char *name, locale_t l) 99 { 100 struct xlocale_numeric *new = calloc(sizeof(struct xlocale_numeric), 101 1); 102 if (new == NULL) 103 return (NULL); 104 new->header.header.destructor = destruct_numeric; 105 if (numeric_load_locale(new, &l->using_numeric_locale, 106 &l->numeric_locale_changed, name) == _LDP_ERROR) { 107 xlocale_release(new); 108 return (NULL); 109 } 110 return (new); 111 } 112 113 struct lc_numeric_T * 114 __get_current_numeric_locale(locale_t loc) 115 { 116 return (loc->using_numeric_locale ? 117 &((struct xlocale_numeric *)loc->components[XLC_NUMERIC])->locale : 118 (struct lc_numeric_T *)&_C_numeric_locale); 119 } 120 121 #ifdef LOCALE_DEBUG 122 void 123 numericdebug(void) { 124 printf( "decimal_point = %s\n" 125 "thousands_sep = %s\n" 126 "grouping = %s\n", 127 _numeric_locale.decimal_point, 128 _numeric_locale.thousands_sep, 129 _numeric_locale.grouping 130 ); 131 } 132 #endif /* LOCALE_DEBUG */ 133