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      1 /* $NetBSD: generic_lc_all.c,v 1.7 2024/01/20 14:52:48 christos Exp $ */
      2 
      3 /*-
      4  * Copyright (c)2008 Citrus Project,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #if defined(LIBC_SCCS) && !defined(lint)
     31 __RCSID("$NetBSD: generic_lc_all.c,v 1.7 2024/01/20 14:52:48 christos Exp $");
     32 #endif /* LIBC_SCCS and not lint */
     33 
     34 #include "namespace.h"
     35 #include <sys/types.h>
     36 #include <assert.h>
     37 #include <langinfo.h>
     38 #define __SETLOCALE_SOURCE__
     39 #include <locale.h>
     40 #include <stdio.h>
     41 #include <stdlib.h>
     42 #include <string.h>
     43 
     44 #include "setlocale_local.h"
     45 
     46 /*
     47  * macro required by all template headers
     48  */
     49 #define _PREFIX(name)	__CONCAT(_generic_LC_ALL_, name)
     50 
     51 #include "generic_lc_template_decl.h"
     52 
     53 const char *
     54 _generic_LC_ALL_setlocale(const char * __restrict name,
     55     struct _locale * __restrict locale)
     56 {
     57 	_locale_set_t sl;
     58 	char head[_LOCALENAME_LEN_MAX * (_LC_LAST - 1)], *tail;
     59 	const char *tokens[_LC_LAST], *s, *t;
     60 	int load_locale_success, i, j;
     61 
     62 	sl = _find_category(1);
     63 	_DIAGASSERT(sl != NULL);
     64 	load_locale_success = 0;
     65 	if (name != NULL) {
     66 		strlcpy(&head[0], name, sizeof(head));
     67 		tokens[1] = &head[0];
     68 		tail = __UNCONST(strchr(tokens[1], '/'));
     69 		if (tail == NULL) {
     70 			for (i = 2; i < _LC_LAST; ++i)
     71 				tokens[i] = tokens[1];
     72 		} else {
     73 			*tail++ = '\0';
     74 			for (i = 2; i < _LC_LAST - 1; ++i) {
     75 				tokens[i] = (const char *)tail;
     76 				tail = __UNCONST(strchr(tokens[i], '/'));
     77 				if (tail == NULL)
     78 					return NULL;
     79 				*tail++ = '\0';
     80 			}
     81 			tokens[_LC_LAST - 1] = (const char *)tail;
     82 			tail = __UNCONST(strchr(tokens[i], '/'));
     83 			if (tail != NULL)
     84 				return NULL;
     85 		}
     86 		if ((*sl)(tokens[1], locale) != NULL)
     87 			load_locale_success = 1;
     88 	}
     89 	s = (*sl)(NULL, locale);
     90 	_DIAGASSERT(s != NULL);
     91 	strlcpy(&locale->query[0], s, sizeof(locale->query));
     92 	for (i = 2, j = 0; i < _LC_LAST; ++i) {
     93 		sl = _find_category(i);
     94 		_DIAGASSERT(sl != NULL);
     95 		if (name != NULL) {
     96 			if ((*sl)(tokens[i], locale) != NULL)
     97 				load_locale_success = 1;
     98 		}
     99 		t = (*sl)(NULL, locale);
    100 		_DIAGASSERT(t != NULL);
    101 		if (j == 0) {
    102 			if (!strcmp(s, t))
    103 				continue;
    104 			for (j = 2; j < i; ++j) {
    105 				strlcat(&locale->query[0], "/",
    106 				    sizeof(locale->query));
    107 				strlcat(&locale->query[0], s,
    108 				    sizeof(locale->query));
    109 			}
    110 		}
    111 		strlcat(&locale->query[0], "/", sizeof(locale->query));
    112 		strlcat(&locale->query[0], t, sizeof(locale->query));
    113 	}
    114 	if (name != NULL && !load_locale_success)
    115 		return NULL;
    116 	return (const char *)&locale->query[0];
    117 }
    118