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

   1 /*
   2  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
   3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   4  * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
   5  * Copyright (c) 1991, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 4. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #ifndef _LCONV_C99
  34 #define _LCONV_C99      /* so we get all the extensions */
  35 #endif
  36
  37 #include "lint.h"
  38 #include <locale.h>
  39 #include "lmonetary.h"
  40 #include "lnumeric.h"
  41 #include "localeimpl.h"
  42
  43 /*
  44  * Return the current locale conversion.
  45  *
  46  * Note that XPG7 specifically states that localeconv's return value may
  47  * be invalidated if the application calls setlocale() or uselocale() within
  48  * the same thread.
  49  *
  50  * Because localeconv() may be called many times (especially by library
  51  * routines like printf() & strtod()), the approprate members of the
  52  * lconv structure are computed only when the monetary or numeric
  53  * locale has been changed.
  54  */
  55 struct lconv *
  56 localeconv(void)
  57 {
  58         struct lconv    *lconv;
  59         locale_t        loc;
  60         struct lc_monetary      *mptr;
  61         struct lc_numeric       *nptr;
  62
  63         loc = uselocale(NULL);
  64         lconv = &loc->lconv;
  65
  66         if (loc->loaded[LC_MONETARY] == 0) {
  67                 mptr = loc->locdata[LC_MONETARY]->l_data[0];
  68
  69 #define M_ASSIGN_STR(NAME) (lconv->NAME = (char *)mptr->NAME)
  70 #define M_ASSIGN_CHAR(NAME) (lconv->NAME = mptr->NAME[0])
  71
  72                 M_ASSIGN_STR(int_curr_symbol);
  73                 M_ASSIGN_STR(currency_symbol);
  74                 M_ASSIGN_STR(mon_decimal_point);
  75                 M_ASSIGN_STR(mon_thousands_sep);
  76                 M_ASSIGN_STR(mon_grouping);
  77                 M_ASSIGN_STR(positive_sign);
  78                 M_ASSIGN_STR(negative_sign);
  79                 M_ASSIGN_CHAR(int_frac_digits);
  80                 M_ASSIGN_CHAR(frac_digits);
  81                 M_ASSIGN_CHAR(p_cs_precedes);
  82                 M_ASSIGN_CHAR(p_sep_by_space);
  83                 M_ASSIGN_CHAR(n_cs_precedes);
  84                 M_ASSIGN_CHAR(n_sep_by_space);
  85                 M_ASSIGN_CHAR(p_sign_posn);
  86                 M_ASSIGN_CHAR(n_sign_posn);
  87                 M_ASSIGN_CHAR(int_p_cs_precedes);
  88                 M_ASSIGN_CHAR(int_n_cs_precedes);
  89                 M_ASSIGN_CHAR(int_p_sep_by_space);
  90                 M_ASSIGN_CHAR(int_n_sep_by_space);
  91                 M_ASSIGN_CHAR(int_p_sign_posn);
  92                 M_ASSIGN_CHAR(int_n_sign_posn);
  93                 loc->loaded[LC_MONETARY] = 1;
  94         }
  95
  96         if (loc->loaded[LC_NUMERIC] == 0) {
  97                 nptr = loc->locdata[LC_NUMERIC]->l_data[0];
  98
  99 #define N_ASSIGN_STR(NAME) (lconv->NAME = (char *)nptr->NAME)
 100
 101                 N_ASSIGN_STR(decimal_point);
 102                 N_ASSIGN_STR(thousands_sep);
 103                 N_ASSIGN_STR(grouping);
 104                 loc->loaded[LC_NUMERIC] = 1;
 105         }
 106
 107         return (lconv);
 108 }