1 files changed, 332 insertions, 0 deletions
diff --git a/lib/libc/locale/setlocale.c b/lib/libc/locale/setlocale.c
new file mode 100644
index 0000000..d6db181
--- /dev/null
+++ b/lib/libc/locale/setlocale.c
@@ -0,0 +1,332 @@
+/*
+ * 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);
+static 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);
+		return (old);
+	}
+
+	return (NULL);
+}
+
+static 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);
+}
+