/* Test of setting the current locale.

   Copyright (C) 2011-2017 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#include <locale.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int

main ()

{

  /* Try to set the locale by implicitly looking at the LC_ALL environment

     variable.  */

  if (setlocale (LC_ALL, "") != NULL)

    /* It was successful.  Check whether LC_CTYPE is non-trivial.  */

    if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)

      {

        fprintf (stderr, "setlocale did not fail for implicit %s\n",

                 getenv ("LC_ALL"));

        return 1;

      }

  /* Reset the locale.  */

  if (setlocale (LC_ALL, "C") == NULL)

    return 1;

  /* Try to set the locale by explicitly looking at the LC_ALL environment

     variable.  */

  if (setlocale (LC_ALL, getenv ("LC_ALL")) != NULL)

    /* It was successful.  Check whether LC_CTYPE is non-trivial.  */

    if (strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)

      {

        fprintf (stderr, "setlocale did not fail for explicit %s\n",

                 getenv ("LC_ALL"));

        return 1;

      }

  return 0;

}