lib/libc/locale/generic_lc_all.c

   1 /* $NetBSD: generic_lc_all.c,v 1.5 2013/04/14 23:30:16 joerg 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 1.5 2013/04/14 23:30:16 joerg Exp $");
  32 #endif /* LIBC_SCCS and not lint */
  33
  34 #include <sys/types.h>
  35 #include <assert.h>
  36 #include <langinfo.h>
  37 #define __SETLOCALE_SOURCE__
  38 #include <locale.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42
  43 #include "setlocale_local.h"
  44
  45 /*
  46  * macro required by all template headers
  47  */
  48 #define _PREFIX(name)   __CONCAT(_generic_LC_ALL_, name)
  49
  50 #include "generic_lc_template_decl.h"
  51
  52 const char *
  53 _generic_LC_ALL_setlocale(const char * __restrict name,
  54     struct _locale * __restrict locale)
  55 {
  56         _locale_set_t sl;
  57         char head[_LOCALENAME_LEN_MAX * (_LC_LAST - 1)], *tail;
  58         const char *tokens[_LC_LAST], *s, *t;
  59         int load_locale_success, i, j;
  60
  61         sl = _find_category(1);
  62         _DIAGASSERT(sl != NULL);
  63         load_locale_success = 0;
  64         if (name != NULL) {
  65                 strlcpy(&head[0], name, sizeof(head));
  66                 tokens[1] = &head[0];
  67                 tail = strchr(tokens[1], '/');
  68                 if (tail == NULL) {
  69                         for (i = 2; i < _LC_LAST; ++i)
  70                                 tokens[i] = tokens[1];
  71                 } else {
  72                         *tail++ = '\0';
  73                         for (i = 2; i < _LC_LAST - 1; ++i) {
  74                                 tokens[i] = (const char *)tail;
  75                                 tail = strchr(tokens[i], '/');
  76                                 if (tail == NULL)
  77                                         return NULL;
  78                                 *tail++ = '\0';
  79                         }
  80                         tokens[_LC_LAST - 1] = (const char *)tail;
  81                         tail = strchr(tokens[i], '/');
  82                         if (tail != NULL)
  83                                 return NULL;
  84                 }
  85                 if ((*sl)(tokens[1], locale) != NULL)
  86                         load_locale_success = 1;
  87         }
  88         s = (*sl)(NULL, locale);
  89         _DIAGASSERT(s != NULL);
  90         strlcpy(&locale->query[0], s, sizeof(locale->query));
  91         for (i = 2, j = 0; i < _LC_LAST; ++i) {
  92                 sl = _find_category(i);
  93                 _DIAGASSERT(sl != NULL);
  94                 if (name != NULL) {
  95                         if ((*sl)(tokens[i], locale) != NULL)
  96                                 load_locale_success = 1;
  97                 }
  98                 t = (*sl)(NULL, locale);
  99                 _DIAGASSERT(t != NULL);
 100                 if (j == 0) {
 101                         if (!strcmp(s, t))
 102                                 continue;
 103                         for (j = 2; j < i; ++j) {
 104                                 strlcat(&locale->query[0], "/",
 105                                     sizeof(locale->query));
 106                                 strlcat(&locale->query[0], s,
 107                                     sizeof(locale->query));
 108                         }
 109                 }
 110                 strlcat(&locale->query[0], "/", sizeof(locale->query));
 111                 strlcat(&locale->query[0], t, sizeof(locale->query));
 112         }
 113         if (name != NULL && !load_locale_success)
 114                 return NULL;
 115         return (const char *)&locale->query[0];
 116 }
 117