/* * 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. */ #if defined(LIBC_SCCS) && !defined(lint) static char rcsid[] = "$OpenBSD: setlocale.c,v 1.5 1996/10/29 03:22:27 millert Exp $"; #endif /* LIBC_SCCS and not lint */ #include #include #include #include #include #include #include /* * Category names for getenv() */ static char *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 found, i, len; char *env, *r; if (issetugid() != 0 || ((!PathLocale && !(PathLocale = getenv("PATH_LOCALE"))) || !*PathLocale)) 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)strcpy(new_categories[i], current_categories[i]); /* * 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)strcpy(new_categories[i], new_categories[i-1]); } } if (category) return (loadlocale(category)); for (found = 0, i = 1; i < _LC_LAST; ++i) { if (loadlocale(i) != NULL) found = 1; else if (!category) { found = 0; break; } } return (found ? currentlocale() : NULL); } static char * currentlocale() { int i; (void)strcpy(current_locale_string, current_categories[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")) { /* * Some day this will need to reset the locale to the default * C locale. Since we have no way to change them as of yet, * there is no need to reset them. */ (void)strcpy(current_categories[category], new_categories[category]); 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: case LC_COLLATE: case LC_MESSAGES: case LC_MONETARY: case LC_NUMERIC: case LC_TIME: return (NULL); } return (NULL); }