lib/localeconv.c

/* Query locale dependent information for formatting numbers.
   Copyright (C) 2012-2026 Free Software Foundation, Inc.

   This file is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.

   This file is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#include <locale.h>

#include <limits.h>

#if HAVE_STRUCT_LCONV_DECIMAL_POINT

# define FIX_CHAR_VALUE(x) ((x) >= 0 ? (x) : CHAR_MAX)

/* Override for platforms where 'struct lconv' lacks the int_p_*, int_n_*
   members or where fields of type 'char' are set to -1 instead of CHAR_MAX.  */

struct lconv *
localeconv (void)
{
  static struct lconv result;
# undef lconv
# undef localeconv
  struct lconv *sys_result = localeconv ();

  result.decimal_point = sys_result->decimal_point;
  result.thousands_sep = sys_result->thousands_sep;
  result.grouping = sys_result->grouping;
  result.mon_decimal_point = sys_result->mon_decimal_point;
  result.mon_thousands_sep = sys_result->mon_thousands_sep;
  result.mon_grouping = sys_result->mon_grouping;
  result.positive_sign = sys_result->positive_sign;
  result.negative_sign = sys_result->negative_sign;
  result.currency_symbol = sys_result->currency_symbol;
  result.frac_digits = FIX_CHAR_VALUE (sys_result->frac_digits);
  result.p_cs_precedes = FIX_CHAR_VALUE (sys_result->p_cs_precedes);
  result.p_sign_posn = FIX_CHAR_VALUE (sys_result->p_sign_posn);
  result.p_sep_by_space = FIX_CHAR_VALUE (sys_result->p_sep_by_space);
  result.n_cs_precedes = FIX_CHAR_VALUE (sys_result->n_cs_precedes);
  result.n_sign_posn = FIX_CHAR_VALUE (sys_result->n_sign_posn);
  result.n_sep_by_space = FIX_CHAR_VALUE (sys_result->n_sep_by_space);
  result.int_curr_symbol = sys_result->int_curr_symbol;
  result.int_frac_digits = FIX_CHAR_VALUE (sys_result->int_frac_digits);
# if HAVE_STRUCT_LCONV_INT_P_CS_PRECEDES
  result.int_p_cs_precedes = FIX_CHAR_VALUE (sys_result->int_p_cs_precedes);
  result.int_p_sign_posn = FIX_CHAR_VALUE (sys_result->int_p_sign_posn);
  result.int_p_sep_by_space = FIX_CHAR_VALUE (sys_result->int_p_sep_by_space);
  result.int_n_cs_precedes = FIX_CHAR_VALUE (sys_result->int_n_cs_precedes);
  result.int_n_sign_posn = FIX_CHAR_VALUE (sys_result->int_n_sign_posn);
  result.int_n_sep_by_space = FIX_CHAR_VALUE (sys_result->int_n_sep_by_space);
# else
  result.int_p_cs_precedes = FIX_CHAR_VALUE (sys_result->p_cs_precedes);
  result.int_p_sign_posn = FIX_CHAR_VALUE (sys_result->p_sign_posn);
  result.int_p_sep_by_space = FIX_CHAR_VALUE (sys_result->p_sep_by_space);
  result.int_n_cs_precedes = FIX_CHAR_VALUE (sys_result->n_cs_precedes);
  result.int_n_sign_posn = FIX_CHAR_VALUE (sys_result->n_sign_posn);
  result.int_n_sep_by_space = FIX_CHAR_VALUE (sys_result->n_sep_by_space);
# endif

  return &result;
}

#else

/* Override for platforms where 'struct lconv' is a dummy.  */

struct lconv *
localeconv (void)
{
  static /*const*/ struct lconv result =
    {
      /* decimal_point */ ".",
      /* thousands_sep */ "",
      /* grouping */ "",
      /* mon_decimal_point */ "",
      /* mon_thousands_sep */ "",
      /* mon_grouping */ "",
      /* positive_sign */ "",
      /* negative_sign */ "",
      /* currency_symbol */ "",
      /* frac_digits */ CHAR_MAX,
      /* p_cs_precedes */ CHAR_MAX,
      /* p_sign_posn */ CHAR_MAX,
      /* p_sep_by_space */ CHAR_MAX,
      /* n_cs_precedes */ CHAR_MAX,
      /* n_sign_posn */ CHAR_MAX,
      /* n_sep_by_space */ CHAR_MAX,
      /* int_curr_symbol */ "",
      /* int_frac_digits */ CHAR_MAX,
      /* int_p_cs_precedes */ CHAR_MAX,
      /* int_p_sign_posn */ CHAR_MAX,
      /* int_p_sep_by_space */ CHAR_MAX,
      /* int_n_cs_precedes */ CHAR_MAX,
      /* int_n_sign_posn */ CHAR_MAX,
      /* int_n_sep_by_space */ CHAR_MAX
    };

  return &result;
}

#endif