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

   1 /*
   2  * Copyright 2014 Garrett D'Amore.
   3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   4  * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
   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 "lint.h"
  30 #include <limits.h>
  31 #include <errno.h>
  32 #include "ldpart.h"
  33 #include "lnumeric.h"
  34 #include "localeimpl.h"
  35
  36 extern const char *__fix_locale_grouping_str(const char *);
  37
  38 #define LCNUMERIC_SIZE (sizeof (struct lc_numeric) / sizeof (char *))
  39
  40 static char     numempty[] = { CHAR_MAX, '\0' };
  41
  42 struct lc_numeric lc_numeric_posix = {
  43         ".",            /* decimal_point */
  44         "",             /* thousands_sep */
  45         numempty        /* grouping */
  46 };
  47
  48 struct locdata __posix_numeric_locdata = {
  49         .l_lname = "C",
  50         .l_data = { &lc_numeric_posix }
  51 };
  52
  53
  54 /*
  55  * Return the locale's numeric locdata structure.
  56  */
  57 struct locdata *
  58 __lc_numeric_load(const char *name)
  59 {
  60         struct locdata *ldata;
  61         struct lc_numeric *lnum;
  62         int ret;
  63
  64         if ((ldata = __locdata_alloc(name, sizeof (*lnum))) == NULL) {
  65                 errno = EINVAL;
  66                 return (NULL);
  67         }
  68         lnum = ldata->l_data[0];
  69
  70         ret = __part_load_locale(name, (char **)&ldata->l_data[1],
  71             "LC_NUMERIC", LCNUMERIC_SIZE, LCNUMERIC_SIZE, (const char **)lnum);
  72
  73         if (ret != _LDP_LOADED) {
  74                 __locdata_free(ldata);
  75                 return (NULL);
  76         }
  77
  78         /* Can't be empty according to C99 */
  79         if (*lnum->decimal_point == '\0')
  80                 lnum->decimal_point = lc_numeric_posix.decimal_point;
  81         lnum->grouping = __fix_locale_grouping_str(lnum->grouping);
  82
  83         return (ldata);
  84 }