/* $NetBSD: setlocale.c,v 1.37 2002/02/13 07:59:45 yamt Exp $ */ /* * Copyright (c) 1991, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Paul Borman at Krystal Technologies. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #if defined(LIBC_SCCS) && !defined(lint) #if 0 static char sccsid[] = "@(#)setlocale.c 8.1 (Berkeley) 7/4/93"; #else __RCSID("$NetBSD: setlocale.c,v 1.37 2002/02/13 07:59:45 yamt Exp $"); #endif #endif /* LIBC_SCCS and not lint */ #define _CTYPE_PRIVATE #include "namespace.h" #include #include #include #include #include #include #define __SETLOCALE_SOURCE__ #include #include #include #include #include #include #ifdef WITH_RUNE #include "rune.h" #include "rune_local.h" #else #include "ctypeio.h" #endif /* * Category names for getenv() */ static const char *const categories[_LC_LAST] = { "LC_ALL", "LC_COLLATE", "LC_CTYPE", "LC_MONETARY", "LC_NUMERIC", "LC_TIME", "LC_MESSAGES" }; /* * Current locales for each category */ static char current_categories[_LC_LAST][32] = { "C", "C", "C", "C", "C", "C", "C" }; /* * The locales we are going to try and load */ static char new_categories[_LC_LAST][32]; /* * Backup area to back out changes on failure */ static char saved_categories[_LC_LAST][32]; static char current_locale_string[_LC_LAST * 33]; char *_PathLocale; static char *currentlocale __P((void)); static char *loadlocale __P((int)); static const char *__get_locale_env __P((int)); char * __setlocale(category, locale) int category; const char *locale; { int i, loadlocale_success; size_t len; const char *env, *r; if (issetugid() || (!_PathLocale && !(_PathLocale = getenv("PATH_LOCALE")))) _PathLocale = _PATH_LOCALE; if (category < 0 || category >= _LC_LAST) return (NULL); if (!locale) return (category ? current_categories[category] : currentlocale()); /* * Default to the current locale for everything. */ for (i = 1; i < _LC_LAST; ++i) (void)strlcpy(new_categories[i], current_categories[i], sizeof(new_categories[i])); /* * Now go fill up new_categories from the locale argument */ if (!*locale) { if (category == LC_ALL) { for (i = 1; i < _LC_LAST; ++i) { env = __get_locale_env(i); (void)strlcpy(new_categories[i], env, sizeof(new_categories[i])); } } else { env = __get_locale_env(category); (void)strlcpy(new_categories[category], env, sizeof(new_categories[category])); } } else if (category) { (void)strlcpy(new_categories[category], locale, sizeof(new_categories[category])); } else { if ((r = strchr(locale, '/')) == 0) { for (i = 1; i < _LC_LAST; ++i) { (void)strlcpy(new_categories[i], locale, sizeof(new_categories[i])); } } else { for (i = 1; r[1] == '/'; ++r) ; if (!r[1]) return (NULL); /* Hmm, just slashes... */ do { len = r - locale > sizeof(new_categories[i]) - 1 ? sizeof(new_categories[i]) - 1 : r - locale; (void)strncpy(new_categories[i++], locale, len); new_categories[i++][len] = 0; locale = r; while (*locale == '/') ++locale; while (*++r && *r != '/'); } while (*locale); while (i < _LC_LAST) (void)strlcpy(new_categories[i], new_categories[i - 1], sizeof(new_categories[i])); } } if (category) return (loadlocale(category)); loadlocale_success = 0; for (i = 1; i < _LC_LAST; ++i) { (void)strlcpy(saved_categories[i], current_categories[i], sizeof(saved_categories[i])); if (loadlocale(i) != NULL) loadlocale_success = 1; } /* * If all categories failed, return NULL; we don't need to back * changes off, since none happened. */ if (!loadlocale_success) return NULL; return (currentlocale()); } static char * currentlocale() { int i; (void)strlcpy(current_locale_string, current_categories[1], sizeof(current_locale_string)); for (i = 2; i < _LC_LAST; ++i) if (strcmp(current_categories[1], current_categories[i])) { (void)snprintf(current_locale_string, sizeof(current_locale_string), "%s/%s/%s/%s/%s/%s", current_categories[1], current_categories[2], current_categories[3], current_categories[4], current_categories[5], current_categories[6]); break; } return (current_locale_string); } static char * loadlocale(category) int category; { char name[PATH_MAX]; _DIAGASSERT(0 < category && category < _LC_LAST); if (strcmp(new_categories[category], current_categories[category]) == 0) return (current_categories[category]); if (!strcmp(new_categories[category], "C") || !strcmp(new_categories[category], "POSIX")) { switch (category) { case LC_CTYPE: #ifdef WITH_RUNE (void)_xpg4_setrunelocale("C"); (void)__runetable_to_netbsd_ctype("C"); #else if (_ctype_ != _C_ctype_) { /* LINTED const castaway */ free((void *)_ctype_); _ctype_ = _C_ctype_; } if (_toupper_tab_ != _C_toupper_) { /* LINTED const castaway */ free((void *)_toupper_tab_); _toupper_tab_ = _C_toupper_; } if (_tolower_tab_ != _C_tolower_) { /* LINTED const castaway */ free((void *)_tolower_tab_); _tolower_tab_ = _C_tolower_; } #endif } (void)strlcpy(current_categories[category], new_categories[category], sizeof(current_categories[category])); return current_categories[category]; } (void)snprintf(name, sizeof(name), "%s/%s/%s", _PathLocale, new_categories[category], categories[category]); switch (category) { case LC_CTYPE: #ifdef WITH_RUNE if (_xpg4_setrunelocale(new_categories[category])) return NULL; if (__runetable_to_netbsd_ctype(new_categories[category])) { /* very unfortunate, but need to go to "C" locale */ (void)_xpg4_setrunelocale("C"); (void)__runetable_to_netbsd_ctype("C"); return NULL; } #else if (!__loadctype(name)) return NULL; #endif break; case LC_MESSAGES: /* * XXX we don't have LC_MESSAGES support yet, * but catopen may use the value of LC_MESSAGES category. * so return successfully if locale directory is present. */ (void)snprintf(name, sizeof(name), "%s/%s", _PathLocale, new_categories[category]); /* local */ { struct stat st; if (stat(name, &st) < 0) return NULL; if (!S_ISDIR(st.st_mode)) return NULL; } break; case LC_COLLATE: case LC_MONETARY: case LC_NUMERIC: case LC_TIME: return NULL; } (void)strlcpy(current_categories[category], new_categories[category], sizeof(current_categories[category])); return current_categories[category]; } static const char * __get_locale_env(category) int category; { const char *env; _DIAGASSERT(category != LC_ALL); /* 1. check LC_ALL. */ env = getenv(categories[0]); /* 2. check LC_* */ if (!env || !*env) env = getenv(categories[category]); /* 3. check LANG */ if (!env || !*env) env = getenv("LANG"); /* 4. if none is set, fall to "C" */ if (!env || !*env || strchr(env, '/')) env = "C"; return env; }