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-rw-r--r--lib/libc/locale/setlocale.c266
1 files changed, 266 insertions, 0 deletions
diff --git a/lib/libc/locale/setlocale.c b/lib/libc/locale/setlocale.c
new file mode 100644
index 0000000..8b18d1e
--- /dev/null
+++ b/lib/libc/locale/setlocale.c
@@ -0,0 +1,266 @@
+/*
+ * 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.
+ * 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 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 <limits.h>
+#include <locale.h>
+#include <rune.h>
+#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 "../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",
+};
+
+/*
+ * 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);
+
+char *
+setlocale(category, locale)
+ int category;
+ const char *locale;
+{
+ int i, j, len;
+ char *env, *r;
+
+ if (category < LC_ALL || category >= _LC_LAST)
+ return (NULL);
+
+ if (!locale)
+ 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) {
+ env = getenv("LC_ALL");
+
+ if (category != LC_ALL && (!env || !*env))
+ env = getenv(categories[category]);
+
+ if (!env || !*env)
+ env = getenv("LANG");
+
+ if (!env || !*env || strchr(env, '/'))
+ env = "C";
+
+ (void) strncpy(new_categories[category], env, ENCODING_LEN);
+ new_categories[category][ENCODING_LEN] = '\0';
+ if (category == LC_ALL) {
+ for (i = 1; i < _LC_LAST; ++i) {
+ if (!(env = getenv(categories[i])) || !*env)
+ env = new_categories[LC_ALL];
+ (void)strncpy(new_categories[i], env, ENCODING_LEN);
+ new_categories[i][ENCODING_LEN] = '\0';
+ }
+ }
+ } else if (category != LC_ALL) {
+ (void)strncpy(new_categories[category], locale, ENCODING_LEN);
+ new_categories[category][ENCODING_LEN] = '\0';
+ } else {
+ if ((r = strchr(locale, '/')) == NULL) {
+ for (i = 1; i < _LC_LAST; ++i) {
+ (void)strncpy(new_categories[i], locale, ENCODING_LEN);
+ new_categories[i][ENCODING_LEN] = '\0';
+ }
+ } else {
+ for (i = 1; r[1] == '/'; ++r);
+ if (!r[1])
+ return (NULL); /* Hmm, just slashes... */
+ do {
+ len = r - locale > ENCODING_LEN ? ENCODING_LEN : r - locale;
+ (void)strncpy(new_categories[i], locale, len);
+ new_categories[i][len] = '\0';
+ i++;
+ locale = r;
+ while (*locale == '/')
+ ++locale;
+ while (*++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) {
+ for (j = 1; j < i; j++) {
+ (void)strcpy(new_categories[j],
+ saved_categories[j]);
+ /* XXX can fail too */
+ (void)loadlocale(j);
+ }
+ 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 *ret;
+ char *new = new_categories[category];
+ char *old = current_categories[category];
+
+ if (_PathLocale == NULL) {
+ char *p = getenv("PATH_LOCALE");
+
+ if (p != NULL
+#ifndef __NETBSD_SYSCALLS
+ && !issetugid()
+#endif
+ ) {
+ if (strlen(p) + 1/*"/"*/ + ENCODING_LEN +
+ 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX)
+ return (NULL);
+ _PathLocale = strdup(p);
+ if (_PathLocale == NULL)
+ return (NULL);
+ } else
+ _PathLocale = _PATH_LOCALE;
+ }
+
+ if (strcmp(new, old) == 0)
+ return (old);
+
+ if (category == LC_CTYPE) {
+ ret = setrunelocale(new) ? NULL : new;
+ if (!ret)
+ (void)setrunelocale(old);
+ else
+ (void)strcpy(old, new);
+ return (ret);
+ }
+
+#define LOAD_CATEGORY(CAT, FUNC) \
+ if (category == CAT) { \
+ ret = (FUNC(new) < 0) ? NULL : new; \
+ if (!ret) \
+ (void)FUNC(old); \
+ else \
+ (void)strcpy(old, new); \
+ return (ret); \
+ }
+
+ LOAD_CATEGORY(LC_COLLATE, __collate_load_tables);
+ LOAD_CATEGORY(LC_TIME, __time_load_locale);
+ LOAD_CATEGORY(LC_NUMERIC, __numeric_load_locale);
+ LOAD_CATEGORY(LC_MONETARY, __monetary_load_locale);
+ LOAD_CATEGORY(LC_MESSAGES, __messages_load_locale);
+
+ /* Just in case...*/
+ return (NULL);
+}
+
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