locale/FreeBSD/localeconv.c

   1 /*
   2  * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
   3  * Copyright (c) 1991, 1993
   4  *      The Regents of the University of California.  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  * 4. Neither the name of the University nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30
  31 #if defined(LIBC_SCCS) && !defined(lint)
  32 static char sccsid[] = "@(#)localeconv.c        8.1 (Berkeley) 6/4/93";
  33 #endif /* LIBC_SCCS and not lint */
  34 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD: src/lib/libc/locale/localeconv.c,v 1.14 2007/12/12 07:43:23 phantom Exp $");
  36
  37 #include "xlocale_private.h"
  38
  39 #include <limits.h>
  40 #include <locale.h>
  41
  42 #include "lmonetary.h"
  43 #include "lnumeric.h"
  44
  45 #ifdef __APPLE_PR3417676_HACK__
  46 /*------------------------------------------------------------------------
  47  * PR-3417676: We need to provide a way to force "C" locale style number
  48  * formatting independent of the locale setting.  We provide private
  49  * routines to get and set a flag that tells localeconv() to either return
  50  * a "C" struct lconv, or the one dependent on the actual locale.
  51  *------------------------------------------------------------------------*/
  52 static char empty[] = "";
  53 static char numempty[] = { CHAR_MAX, '\0' };
  54
  55 /*
  56  * Default (C) locale conversion.
  57  */
  58 static struct lconv _C_lconv = {
  59         ".",                    /* decimal_point */
  60         empty,                  /* thousands_sep */
  61         numempty,               /* grouping */
  62         empty,                  /* int_curr_symbol */
  63         empty,                  /* currency_symbol */
  64         empty,                  /* mon_decimal_point */
  65         empty,                  /* mon_thousands_sep */
  66         numempty,               /* mon_grouping */
  67         empty,                  /* positive_sign */
  68         empty,                  /* negative_sign */
  69         CHAR_MAX,               /* int_frac_digits */
  70         CHAR_MAX,               /* frac_digits */
  71         CHAR_MAX,               /* p_cs_precedes */
  72         CHAR_MAX,               /* p_sep_by_space */
  73         CHAR_MAX,               /* n_cs_precedes */
  74         CHAR_MAX,               /* n_sep_by_space */
  75         CHAR_MAX,               /* p_sign_posn */
  76         CHAR_MAX,               /* n_sign_posn */
  77         CHAR_MAX,               /* int_p_cs_precedes */
  78         CHAR_MAX,               /* int_n_cs_precedes */
  79         CHAR_MAX,               /* int_p_sep_by_space */
  80         CHAR_MAX,               /* int_n_sep_by_space */
  81         CHAR_MAX,               /* int_p_sign_posn */
  82         CHAR_MAX,               /* int_n_sign_posn */
  83 };
  84 static int _onlyClocaleconv = 0;
  85
  86 int
  87 __getonlyClocaleconv(void)
  88 {
  89     return _onlyClocaleconv;
  90 }
  91
  92 int
  93 __setonlyClocaleconv(int val)
  94 {
  95     int prev = _onlyClocaleconv;
  96
  97     _onlyClocaleconv = val;
  98     return prev;
  99 }
 100 #endif /* __APPLE_PR3417676_HACK__ */
 101
 102 /*
 103  * The localeconv() function constructs a struct lconv from the current
 104  * monetary and numeric locales.
 105  *
 106  * Because localeconv() may be called many times (especially by library
 107  * routines like printf() & strtod()), the approprate members of the
 108  * lconv structure are computed only when the monetary or numeric
 109  * locale has been changed.
 110  */
 111
 112 /*
 113  * Return the current locale conversion.
 114  */
 115 struct lconv *
 116 localeconv_l(locale_t loc)
 117 {
 118     NORMALIZE_LOCALE(loc);
 119
 120     if (loc->__mlocale_changed) {
 121       XL_LOCK(loc);
 122       if (loc->__mlocale_changed) {
 123         /* LC_MONETARY part */
 124         struct lc_monetary_T * mptr;
 125         struct lconv *lc = &loc->__lc_localeconv;
 126
 127 #define M_ASSIGN_STR(NAME) (lc->NAME = (char*)mptr->NAME)
 128 #define M_ASSIGN_CHAR(NAME) (lc->NAME = mptr->NAME[0])
 129
 130         mptr = __get_current_monetary_locale(loc);
 131         M_ASSIGN_STR(int_curr_symbol);
 132         M_ASSIGN_STR(currency_symbol);
 133         M_ASSIGN_STR(mon_decimal_point);
 134         M_ASSIGN_STR(mon_thousands_sep);
 135         M_ASSIGN_STR(mon_grouping);
 136         M_ASSIGN_STR(positive_sign);
 137         M_ASSIGN_STR(negative_sign);
 138         M_ASSIGN_CHAR(int_frac_digits);
 139         M_ASSIGN_CHAR(frac_digits);
 140         M_ASSIGN_CHAR(p_cs_precedes);
 141         M_ASSIGN_CHAR(p_sep_by_space);
 142         M_ASSIGN_CHAR(n_cs_precedes);
 143         M_ASSIGN_CHAR(n_sep_by_space);
 144         M_ASSIGN_CHAR(p_sign_posn);
 145         M_ASSIGN_CHAR(n_sign_posn);
 146         M_ASSIGN_CHAR(int_p_cs_precedes);
 147         M_ASSIGN_CHAR(int_n_cs_precedes);
 148         M_ASSIGN_CHAR(int_p_sep_by_space);
 149         M_ASSIGN_CHAR(int_n_sep_by_space);
 150         M_ASSIGN_CHAR(int_p_sign_posn);
 151         M_ASSIGN_CHAR(int_n_sign_posn);
 152         loc->__mlocale_changed = 0;
 153       }
 154       XL_UNLOCK(loc);
 155     }
 156
 157     if (loc->__nlocale_changed) {
 158       XL_LOCK(loc);
 159       if (loc->__nlocale_changed) {
 160         /* LC_NUMERIC part */
 161         struct lc_numeric_T * nptr;
 162         struct lconv *lc = &loc->__lc_localeconv;
 163
 164 #define N_ASSIGN_STR(NAME) (lc->NAME = (char*)nptr->NAME)
 165
 166         nptr = __get_current_numeric_locale(loc);
 167         N_ASSIGN_STR(decimal_point);
 168         N_ASSIGN_STR(thousands_sep);
 169         N_ASSIGN_STR(grouping);
 170         loc->__nlocale_changed = 0;
 171       }
 172       XL_UNLOCK(loc);
 173     }
 174
 175     return &loc->__lc_localeconv;
 176 }
 177
 178 /*
 179  * Return the current locale conversion.
 180  */
 181 struct lconv *
 182 localeconv()
 183 {
 184 #ifdef __APPLE_PR3417676_HACK__
 185     /*--------------------------------------------------------------------
 186      * If _onlyClocaleconv is non-zero, just return __lconv, which is a "C"
 187      * struct lconv *.  Otherwise, do the normal thing.
 188      *--------------------------------------------------------------------*/
 189     if (_onlyClocaleconv)
 190         return &_C_lconv;
 191 #endif /* __APPLE_PR3417676_HACK__ */
 192     return localeconv_l(__current_locale());
 193 }