/* $NetBSD: setlocale.c,v 1.17 1999/10/15 17:17:07 jdolecek 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 1.17 1999/10/15 17:17:07 jdolecek Exp $"); #endif #endif /* LIBC_SCCS and not lint */ #define _CTYPE_PRIVATE #include "namespace.h" #include #include #include #include #include #include #include #include #include "ctypeio.h" /* * 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]; static char current_locale_string[_LC_LAST * 33]; static char *PathLocale; static char *currentlocale __P((void)); static char *loadlocale __P((int)); char * setlocale(category, locale) int category; const char *locale; { int i; size_t len; char *env, *r; /* * XXX potential security problem here with set-id programs * being able to read files the user can not normally read. */ if (!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)strncpy(new_categories[i], current_categories[i], sizeof(new_categories[i]) - 1); /* * Now go fill up new_categories from the locale argument */ if (!*locale) { env = getenv(categories[category]); if (!env || !*env) env = getenv(categories[0]); if (!env || !*env) env = getenv("LANG"); if (!env || !*env) env = "C"; (void)strncpy(new_categories[category], env, 31); new_categories[category][31] = 0; if (!category) { for (i = 1; i < _LC_LAST; ++i) { if (!(env = getenv(categories[i])) || !*env) env = new_categories[0]; (void)strncpy(new_categories[i], env, 31); new_categories[i][31] = 0; } } } else if (category) { (void)strncpy(new_categories[category], locale, 31); new_categories[category][31] = 0; } else { if ((r = strchr(locale, '/')) == 0) { for (i = 1; i < _LC_LAST; ++i) { (void)strncpy(new_categories[i], locale, 31); new_categories[i][31] = 0; } } else { for (i = 1; r[1] == '/'; ++r); if (!r[1]) return (NULL); /* Hmm, just slashes... */ do { len = r - locale > 31 ? 31 : 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)strncpy(new_categories[i], new_categories[i-1], sizeof(new_categories[i]) - 1); } } if (category) return (loadlocale(category)); for (i = 1; i < _LC_LAST; ++i) (void) loadlocale(i); return (currentlocale()); } static char * currentlocale() { int i; (void)strncpy(current_locale_string, current_categories[1], sizeof(current_locale_string) - 1); 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", current_categories[1], current_categories[2], current_categories[3], current_categories[4], current_categories[5]); break; } return (current_locale_string); } static char * loadlocale(category) int category; { char name[PATH_MAX]; 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: 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_; } } (void)strncpy(current_categories[category], new_categories[category], sizeof(current_categories[category]) - 1); return current_categories[category]; } /* * Some day we will actually look at this file. */ (void)snprintf(name, sizeof(name), "%s/%s/%s", PathLocale, new_categories[category], categories[category]); switch (category) { case LC_CTYPE: if (__loadctype(name)) { (void)strncpy(current_categories[category], new_categories[category], sizeof(current_categories[category]) - 1); return current_categories[category]; } return NULL; case LC_COLLATE: case LC_MESSAGES: case LC_MONETARY: case LC_NUMERIC: case LC_TIME: return NULL; } return NULL; }