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-rw-r--r--lib/libc/locale/setlocale.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/lib/libc/locale/setlocale.c b/lib/libc/locale/setlocale.c
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index 0000000..179be54
--- /dev/null
+++ b/lib/libc/locale/setlocale.c
@@ -0,0 +1,321 @@
+/*
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifdef LIBC_RCS
+static const char rcsid[] =
+ "$FreeBSD$";
+#endif
+
+#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/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 "setlocale.h"
+
+/*
+ * 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 __P((void));
+static char *loadlocale __P((int));
+static int stub_load_locale __P((const char *));
+
+extern int __time_load_locale __P((const char *)); /* strftime.c */
+
+#ifdef XPG4
+extern int _xpg4_setrunelocale __P((char *));
+#endif
+
+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(categories[category]);
+
+ if (category != LC_ALL && (!env || !*env))
+ env = getenv(categories[LC_ALL]);
+
+ if (!env || !*env)
+ env = getenv("LANG");
+
+ if (!env || !*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)
+ 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) {
+#ifdef XPG4
+ ret = _xpg4_setrunelocale(new) ? NULL : new;
+#else
+ ret = setrunelocale(new) ? NULL : new;
+#endif
+ if (!ret) {
+#ifdef XPG4
+ (void)_xpg4_setrunelocale(old);
+#else
+ (void)setrunelocale(old);
+#endif
+ } else
+ (void)strcpy(old, new);
+ return (ret);
+ }
+
+ if (category == LC_COLLATE) {
+ ret = (__collate_load_tables(new) < 0) ? NULL : new;
+ if (!ret)
+ (void)__collate_load_tables(old);
+ else
+ (void)strcpy(old, new);
+ return (ret);
+ }
+
+ if (category == LC_TIME) {
+ ret = (__time_load_locale(new) < 0) ? NULL : new;
+ if (!ret)
+ (void)__time_load_locale(old);
+ else
+ (void)strcpy(old, new);
+ return (ret);
+ }
+
+ if (category == LC_MONETARY ||
+ category == LC_MESSAGES ||
+ category == LC_NUMERIC) {
+ ret = stub_load_locale(new) ? NULL : new;
+ if (!ret)
+ (void)stub_load_locale(old);
+ else
+ (void)strcpy(old, new);
+ return (ret);
+ }
+
+ /* Just in case...*/
+ return (NULL);
+}
+
+static int
+stub_load_locale(encoding)
+const char *encoding;
+{
+ char name[PATH_MAX];
+ struct stat st;
+
+ if (!encoding)
+ return(1);
+ /*
+ * The "C" and "POSIX" locale are always here.
+ */
+ if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX"))
+ return(0);
+ if (!_PathLocale)
+ return(1);
+ /* Range checking not needed, encoding has fixed size */
+ strcpy(name, _PathLocale);
+ strcat(name, "/");
+ strcat(name, encoding);
+#if 0
+ /*
+ * Some day we will actually look at this file.
+ */
+#endif
+ return (stat(name, &st) != 0 || !S_ISDIR(st.st_mode));
+}
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