1  /* hard-locale.c -- Determine whether a locale is hard.
       2  
       3     Copyright (C) 1997-1999, 2002-2004, 2006-2007, 2009-2021 Free Software
       4     Foundation, Inc.
       5  
       6     This file is free software: you can redistribute it and/or modify
       7     it under the terms of the GNU Lesser General Public License as
       8     published by the Free Software Foundation; either version 2.1 of the
       9     License, or (at your option) any later version.
      10  
      11     This file is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14     GNU Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public License
      17     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <config.h>
      20  
      21  #include "hard-locale.h"
      22  
      23  #include <locale.h>
      24  #include <string.h>
      25  
      26  bool
      27  hard_locale (int category)
      28  {
      29    char locale[SETLOCALE_NULL_MAX];
      30  
      31    if (setlocale_null_r (category, locale, sizeof (locale)))
      32      return false;
      33  
      34    return !(strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0);
      35  }