minix/lib/libc/locale/newlocale.c

106 lines
3 KiB
C
Raw Normal View History

/* $NetBSD: newlocale.c,v 1.3 2013/09/13 13:13:32 joerg Exp $ */
/*-
* Copyright (c)2008, 2011 Citrus Project,
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: newlocale.c,v 1.3 2013/09/13 13:13:32 joerg Exp $");
#include "namespace.h"
#include <assert.h>
#include <errno.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include "setlocale_local.h"
__weak_alias(newlocale, _newlocale)
locale_t
newlocale(int mask, const char *name, locale_t src)
{
struct _locale *dst;
char head[_LOCALENAME_LEN_MAX * (_LC_LAST - 1)], *tail;
const char *tokens[_LC_LAST - 1];
_locale_set_t l;
int i, howmany, categories[_LC_LAST - 1];
if (name == NULL)
name = _C_LOCALE;
dst = malloc(sizeof(*dst));
if (dst == NULL)
return (locale_t)NULL;
if (src == NULL)
src = _current_locale();
memcpy(dst, src, sizeof(*src));
strlcpy(&head[0], name, sizeof(head));
tokens[0] = (const char *)&head[0];
tail = strchr(tokens[0], '/');
if (tail == NULL) {
for (i = 1; i < _LC_LAST; ++i) {
if (mask & (1 << i)) {
l = _find_category(i);
_DIAGASSERT(l != NULL);
(*l)(tokens[0], dst);
}
}
} else {
*tail++ = '\0';
howmany = 0;
for (i = 1; i < _LC_LAST; ++i) {
if (mask & (1 << i))
categories[howmany++] = i;
}
if (howmany-- > 0) {
for (i = 1; i < howmany; ++i) {
tokens[i] = (const char *)tail;
tail = strchr(tokens[i], '/');
if (tail == NULL) {
free(dst);
return NULL;
}
}
tokens[howmany] = tail;
tail = strchr(tokens[howmany], '/');
if (tail != NULL) {
free(dst);
return NULL;
}
for (i = 0; i <= howmany; ++i) {
l = _find_category(categories[i]);
_DIAGASSERT(l != NULL);
(*l)(tokens[i], dst);
}
}
}
if (_setlocale_cache(dst, NULL)) {
free(dst);
return NULL;
}
return (locale_t)dst;
}