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/*
* 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 <sys/localedef.h>
#include <locale.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <paths.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][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);
}
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