diff options
Diffstat (limited to 'lib/libc/locale/setlocale.c')
| -rw-r--r-- | lib/libc/locale/setlocale.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/lib/libc/locale/setlocale.c b/lib/libc/locale/setlocale.c new file mode 100644 index 0000000..8cf8fd4 --- /dev/null +++ b/lib/libc/locale/setlocale.c @@ -0,0 +1,333 @@ +/* + * Copyright (c) 1996 - 2002 FreeBSD Project + * 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. + * 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 sccsid[] = "@(#)setlocale.c 8.1 (Berkeley) 7/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <limits.h> +#include <locale.h> +#include <paths.h> /* for _PATH_LOCALE */ +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include "collate.h" +#include "lmonetary.h" /* for __monetary_load_locale() */ +#include "lnumeric.h" /* for __numeric_load_locale() */ +#include "lmessages.h" /* for __messages_load_locale() */ +#include "setlocale.h" +#include "ldpart.h" +#include "../stdtime/timelocal.h" /* for __time_load_locale() */ + +/* + * 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][ENCODING_LEN + 1] = { + "C", + "C", + "C", + "C", + "C", + "C", + "C", +}; + +/* + * Path to locale storage directory + */ +char *_PathLocale; + +/* + * The locales we are going to try and load + */ +static char new_categories[_LC_LAST][ENCODING_LEN + 1]; +static char saved_categories[_LC_LAST][ENCODING_LEN + 1]; + +static char current_locale_string[_LC_LAST * (ENCODING_LEN + 1/*"/"*/ + 1)]; + +static char *currentlocale(void); +static char *loadlocale(int); +const char *__get_locale_env(int); + +char * +setlocale(category, locale) + int category; + const char *locale; +{ + int i, j, len, saverr; + const char *env, *r; + + if (category < LC_ALL || category >= _LC_LAST) { + errno = EINVAL; + return (NULL); + } + + if (locale == NULL) + return (category != LC_ALL ? + 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) { + if (category == LC_ALL) { + for (i = 1; i < _LC_LAST; ++i) { + env = __get_locale_env(i); + if (strlen(env) > ENCODING_LEN) { + errno = EINVAL; + return (NULL); + } + (void)strcpy(new_categories[i], env); + } + } else { + env = __get_locale_env(category); + if (strlen(env) > ENCODING_LEN) { + errno = EINVAL; + return (NULL); + } + (void)strcpy(new_categories[category], env); + } + } else if (category != LC_ALL) { + if (strlen(locale) > ENCODING_LEN) { + errno = EINVAL; + return (NULL); + } + (void)strcpy(new_categories[category], locale); + } else { + if ((r = strchr(locale, '/')) == NULL) { + if (strlen(locale) > ENCODING_LEN) { + errno = EINVAL; + return (NULL); + } + for (i = 1; i < _LC_LAST; ++i) + (void)strcpy(new_categories[i], locale); + } else { + for (i = 1; r[1] == '/'; ++r) + ; + if (!r[1]) { + errno = EINVAL; + return (NULL); /* Hmm, just slashes... */ + } + do { + if (i == _LC_LAST) + break; /* Too many slashes... */ + if ((len = r - locale) > ENCODING_LEN) { + errno = EINVAL; + return (NULL); + } + (void)strlcpy(new_categories[i], locale, + len + 1); + i++; + while (*r == '/') + r++; + locale = r; + while (*r && *r != '/') + r++; + } while (*locale); + while (i < _LC_LAST) { + (void)strcpy(new_categories[i], + new_categories[i-1]); + i++; + } + } + } + + if (category != LC_ALL) + return (loadlocale(category)); + + for (i = 1; i < _LC_LAST; ++i) { + (void)strcpy(saved_categories[i], current_categories[i]); + if (loadlocale(i) == NULL) { + saverr = errno; + for (j = 1; j < i; j++) { + (void)strcpy(new_categories[j], + saved_categories[j]); + if (loadlocale(j) == NULL) { + (void)strcpy(new_categories[j], "C"); + (void)loadlocale(j); + } + } + errno = saverr; + return (NULL); + } + } + return (currentlocale()); +} + +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])) { + for (i = 2; i < _LC_LAST; ++i) { + (void)strcat(current_locale_string, "/"); + (void)strcat(current_locale_string, + current_categories[i]); + } + break; + } + return (current_locale_string); +} + +static char * +loadlocale(category) + int category; +{ + char *new = new_categories[category]; + char *old = current_categories[category]; + int (*func)(const char *); + int saved_errno; + + if ((new[0] == '.' && + (new[1] == '\0' || (new[1] == '.' && new[2] == '\0'))) || + strchr(new, '/') != NULL) { + errno = EINVAL; + return (NULL); + } + + saved_errno = errno; + errno = __detect_path_locale(); + if (errno != 0) + return (NULL); + errno = saved_errno; + + switch (category) { + case LC_CTYPE: + func = __wrap_setrunelocale; + break; + case LC_COLLATE: + func = __collate_load_tables; + break; + case LC_TIME: + func = __time_load_locale; + break; + case LC_NUMERIC: + func = __numeric_load_locale; + break; + case LC_MONETARY: + func = __monetary_load_locale; + break; + case LC_MESSAGES: + func = __messages_load_locale; + break; + default: + errno = EINVAL; + return (NULL); + } + + if (strcmp(new, old) == 0) + return (old); + + if (func(new) != _LDP_ERROR) { + (void)strcpy(old, new); + (void)strcpy(__xlocale_global_locale.components[category-1]->locale, new); + return (old); + } + + return (NULL); +} + +const char * +__get_locale_env(category) + int category; +{ + const char *env; + + /* 1. check LC_ALL. */ + env = getenv(categories[0]); + + /* 2. check LC_* */ + if (env == NULL || !*env) + env = getenv(categories[category]); + + /* 3. check LANG */ + if (env == NULL || !*env) + env = getenv("LANG"); + + /* 4. if none is set, fall to "C" */ + if (env == NULL || !*env) + env = "C"; + + return (env); +} + +/* + * Detect locale storage location and store its value to _PathLocale variable + */ +int +__detect_path_locale(void) +{ + if (_PathLocale == NULL) { + char *p = getenv("PATH_LOCALE"); + + if (p != NULL && !issetugid()) { + if (strlen(p) + 1/*"/"*/ + ENCODING_LEN + + 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX) + return (ENAMETOOLONG); + _PathLocale = strdup(p); + if (_PathLocale == NULL) + return (errno == 0 ? ENOMEM : errno); + } else + _PathLocale = _PATH_LOCALE; + } + return (0); +} + |
