1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Paul Borman at Krystal Technologies. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <runetype.h> 41 #include <errno.h> 42 #include <limits.h> 43 #include <string.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 #include <wchar.h> 48 #include "ldpart.h" 49 #include "mblocal.h" 50 #include "setlocale.h" 51 52 extern int _none_init(_RuneLocale *); 53 extern int _UTF8_init(_RuneLocale *); 54 extern int _EUC_init(_RuneLocale *); 55 extern int _GB18030_init(_RuneLocale *); 56 extern int _GB2312_init(_RuneLocale *); 57 extern int _GBK_init(_RuneLocale *); 58 extern int _BIG5_init(_RuneLocale *); 59 extern int _MSKanji_init(_RuneLocale *); 60 extern _RuneLocale *_Read_RuneMagi(FILE *); 61 62 static int __setrunelocale(const char *); 63 64 static int 65 __setrunelocale(const char *encoding) 66 { 67 FILE *fp; 68 char name[PATH_MAX]; 69 _RuneLocale *rl; 70 int saverr, ret; 71 static char ctype_encoding[ENCODING_LEN + 1]; 72 static _RuneLocale *CachedRuneLocale; 73 static int Cached__mb_cur_max; 74 static size_t (*Cached__mbrtowc)(wchar_t * __restrict, 75 const char * __restrict, size_t, mbstate_t * __restrict); 76 static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t, 77 mbstate_t * __restrict); 78 static int (*Cached__mbsinit)(const mbstate_t *); 79 static size_t (*Cached__mbsnrtowcs)(wchar_t * __restrict, 80 const char ** __restrict, size_t, size_t, mbstate_t * __restrict); 81 static size_t (*Cached__wcsnrtombs)(char * __restrict, 82 const wchar_t ** __restrict, size_t, size_t, 83 mbstate_t * __restrict); 84 85 /* 86 * The "C" and "POSIX" locale are always here. 87 */ 88 if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { 89 _CurrentRuneLocale = &_DefaultRuneLocale; 90 __mb_cur_max = 1; 91 __mbrtowc = _none_mbrtowc; 92 __mbsinit = _none_mbsinit; 93 __mbsnrtowcs = _none_mbsnrtowcs; 94 __wcrtomb = _none_wcrtomb; 95 __wcsnrtombs = _none_wcsnrtombs; 96 return (0); 97 } 98 99 /* 100 * If the locale name is the same as our cache, use the cache. 101 */ 102 if (CachedRuneLocale != NULL && 103 strcmp(encoding, ctype_encoding) == 0) { 104 _CurrentRuneLocale = CachedRuneLocale; 105 __mb_cur_max = Cached__mb_cur_max; 106 __mbrtowc = Cached__mbrtowc; 107 __mbsinit = Cached__mbsinit; 108 __mbsnrtowcs = Cached__mbsnrtowcs; 109 __wcrtomb = Cached__wcrtomb; 110 __wcsnrtombs = Cached__wcsnrtombs; 111 return (0); 112 } 113 114 /* 115 * Slurp the locale file into the cache. 116 */ 117 118 /* Range checking not needed, encoding length already checked before */ 119 (void) strcpy(name, _PathLocale); 120 (void) strcat(name, "/"); 121 (void) strcat(name, encoding); 122 (void) strcat(name, "/LC_CTYPE"); 123 124 if ((fp = fopen(name, "r")) == NULL) 125 return (errno == 0 ? ENOENT : errno); 126 127 if ((rl = _Read_RuneMagi(fp)) == NULL) { 128 saverr = (errno == 0 ? EFTYPE : errno); 129 (void)fclose(fp); 130 return (saverr); 131 } 132 (void)fclose(fp); 133 134 __mbrtowc = NULL; 135 __mbsinit = NULL; 136 __mbsnrtowcs = __mbsnrtowcs_std; 137 __wcrtomb = NULL; 138 __wcsnrtombs = __wcsnrtombs_std; 139 rl->__sputrune = NULL; 140 rl->__sgetrune = NULL; 141 if (strcmp(rl->__encoding, "NONE") == 0) 142 ret = _none_init(rl); 143 else if (strcmp(rl->__encoding, "UTF-8") == 0) 144 ret = _UTF8_init(rl); 145 else if (strcmp(rl->__encoding, "EUC") == 0) 146 ret = _EUC_init(rl); 147 else if (strcmp(rl->__encoding, "GB18030") == 0) 148 ret = _GB18030_init(rl); 149 else if (strcmp(rl->__encoding, "GB2312") == 0) 150 ret = _GB2312_init(rl); 151 else if (strcmp(rl->__encoding, "GBK") == 0) 152 ret = _GBK_init(rl); 153 else if (strcmp(rl->__encoding, "BIG5") == 0) 154 ret = _BIG5_init(rl); 155 else if (strcmp(rl->__encoding, "MSKanji") == 0) 156 ret = _MSKanji_init(rl); 157 else 158 ret = EFTYPE; 159 if (ret == 0) { 160 if (CachedRuneLocale != NULL) { 161 /* See euc.c */ 162 if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0) 163 free(CachedRuneLocale->__variable); 164 free(CachedRuneLocale); 165 } 166 CachedRuneLocale = _CurrentRuneLocale; 167 Cached__mb_cur_max = __mb_cur_max; 168 Cached__mbrtowc = __mbrtowc; 169 Cached__mbsinit = __mbsinit; 170 Cached__mbsnrtowcs = __mbsnrtowcs; 171 Cached__wcrtomb = __wcrtomb; 172 Cached__wcsnrtombs = __wcsnrtombs; 173 (void)strcpy(ctype_encoding, encoding); 174 } else 175 free(rl); 176 177 return (ret); 178 } 179 180 int 181 __wrap_setrunelocale(const char *locale) 182 { 183 int ret = __setrunelocale(locale); 184 185 if (ret != 0) { 186 errno = ret; 187 return (_LDP_ERROR); 188 } 189 return (_LDP_LOADED); 190 } 191 192