usr/src/lib/libc/port/locale/lnumeric.c

   1 /*
   2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   3  * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include "lint.h"
  29 #include <limits.h>
  30 #include "ldpart.h"
  31 #include "lnumeric.h"
  32 #include "../i18n/_locale.h"
  33
  34 extern int __nlocale_changed;
  35 extern const char *__fix_locale_grouping_str(const char *);
  36
  37 #define LCNUMERIC_SIZE (sizeof (struct lc_numeric_T) / sizeof (char *))
  38
  39 static char     numempty[] = { CHAR_MAX, '\0' };
  40
  41 static const struct lc_numeric_T _C_numeric_locale = {
  42         ".",            /* decimal_point */
  43         "",             /* thousands_sep */
  44         numempty        /* grouping */
  45 };
  46
  47 static struct lc_numeric_T _numeric_locale;
  48 static int      _numeric_using_locale;
  49 static char     *_numeric_locale_buf;
  50
  51 int
  52 __numeric_load_locale(const char *name)
  53 {
  54         const struct lc_numeric_T *leg = &_C_numeric_locale;
  55
  56         int ret;
  57
  58         ret = __part_load_locale(name, &_numeric_using_locale,
  59             &_numeric_locale_buf, "LC_NUMERIC", LCNUMERIC_SIZE, LCNUMERIC_SIZE,
  60             (const char **)&_numeric_locale);
  61         if (ret == _LDP_ERROR)
  62                 return (_LDP_ERROR);
  63
  64         __nlocale_changed = 1;
  65         if (ret == _LDP_LOADED) {
  66                 /* Can't be empty according to C99 */
  67                 if (*_numeric_locale.decimal_point == '\0')
  68                         _numeric_locale.decimal_point =
  69                             _C_numeric_locale.decimal_point;
  70                 _numeric_locale.grouping =
  71                     __fix_locale_grouping_str(_numeric_locale.grouping);
  72                 leg = (const struct lc_numeric_T *)&_numeric_locale;
  73         }
  74         /* This is Solaris legacy, required for ABI compatability */
  75         _numeric[0] = *leg->decimal_point;
  76         _numeric[1] = *leg->grouping;
  77         return (ret);
  78 }
  79
  80 struct lc_numeric_T *
  81 __get_current_numeric_locale(void)
  82 {
  83         return (_numeric_using_locale ? &_numeric_locale :
  84             (struct lc_numeric_T *)&_C_numeric_locale);
  85 }