compiler/clib/locale/lnumeric.c

   1 /*
   2  * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD: src/lib/libc/locale/lnumeric.c,v 1.16 2003/06/26 10:46:16 phantom Exp $");
  29
  30 #include <limits.h>
  31
  32 #include "ldpart.h"
  33 #include "lnumeric.h"
  34
  35 extern int __nlocale_changed;
  36 extern const char *__fix_locale_grouping_str(const char *);
  37
  38 #define LCNUMERIC_SIZE (sizeof(struct lc_numeric_T) / sizeof(char *))
  39
  40 static char     numempty[] = { CHAR_MAX, '\0' };
  41
  42 static const struct lc_numeric_T _C_numeric_locale = {
  43         ".",            /* decimal_point */
  44         "",             /* thousands_sep */
  45         numempty        /* grouping */
  46 };
  47
  48 static struct lc_numeric_T _numeric_locale;
  49 static int      _numeric_using_locale;
  50 static char     *_numeric_locale_buf;
  51
  52 int
  53 __numeric_load_locale(const char *name)
  54 {
  55         int ret;
  56
  57         ret = __part_load_locale(name, &_numeric_using_locale,
  58                 &_numeric_locale_buf, "LC_NUMERIC",
  59                 LCNUMERIC_SIZE, LCNUMERIC_SIZE,
  60                 (const char **)&_numeric_locale);
  61         if (ret != _LDP_ERROR)
  62                 __nlocale_changed = 1;
  63         if (ret == _LDP_LOADED) {
  64                 /* Can't be empty according to C99 */
  65                 if (*_numeric_locale.decimal_point == '\0')
  66                         _numeric_locale.decimal_point =
  67                             _C_numeric_locale.decimal_point;
  68                 _numeric_locale.grouping =
  69                     __fix_locale_grouping_str(_numeric_locale.grouping);
  70         }
  71         return (ret);
  72 }
  73
  74 struct lc_numeric_T *
  75 __get_current_numeric_locale(void)
  76 {
  77         return (_numeric_using_locale
  78                 ? &_numeric_locale
  79                 : (struct lc_numeric_T *)&_C_numeric_locale);
  80 }
  81
  82 #ifdef LOCALE_DEBUG
  83 void
  84 numericdebug(void) {
  85 printf( "decimal_point = %s\n"
  86         "thousands_sep = %s\n"
  87         "grouping = %s\n",
  88         _numeric_locale.decimal_point,
  89         _numeric_locale.thousands_sep,
  90         _numeric_locale.grouping
  91 );
  92 }
  93 #endif /* LOCALE_DEBUG */