/* Test of wcwidth() function.

   Copyright (C) 2007-2017 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/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */

#include <config.h>

#include <wchar.h>

#include "signature.h"

SIGNATURE_CHECK (wcwidth, int, (wchar_t));

#include <locale.h>

#include <string.h>

#include "c-ctype.h"

#include "localcharset.h"

#include "macros.h"

int

main ()

{

  wchar_t wc;

#ifdef C_CTYPE_ASCII

  /* Test width of ASCII characters.  */

  for (wc = 0x20; wc < 0x7F; wc++)

    ASSERT (wcwidth (wc) == 1);

#endif

  /* Switch to an UTF-8 locale.  */

  if (setlocale (LC_ALL, "fr_FR.UTF-8") != NULL

      /* Check whether it's really an UTF-8 locale.

         On OpenBSD 4.0, the setlocale call succeeds only for the LC_CTYPE

         category and therefore returns "C/fr_FR.UTF-8/C/C/C/C", but the

         LC_CTYPE category is effectively set to an ASCII LC_CTYPE category;

         in particular, locale_charset() returns "ASCII".  */

      && strcmp (locale_charset (), "UTF-8") == 0)

    {

      /* Test width of ASCII characters.  */

      for (wc = 0x20; wc < 0x7F; wc++)

        ASSERT (wcwidth (wc) == 1);

      /* Test width of some non-spacing characters.  */

      ASSERT (wcwidth (0x0301) == 0);

      ASSERT (wcwidth (0x05B0) == 0);

      /* Test width of some format control characters.  */

      ASSERT (wcwidth (0x200E) <= 0);

      ASSERT (wcwidth (0x2060) <= 0);

#if 0  /* wchar_t may be only 16 bits.  */

      ASSERT (wcwidth (0xE0001) <= 0);

      ASSERT (wcwidth (0xE0044) <= 0);

#endif

      /* Test width of some zero width characters.  */

      ASSERT (wcwidth (0x200B) == 0);

      ASSERT (wcwidth (0xFEFF) <= 0);

      /* Test width of some CJK characters.  */

      ASSERT (wcwidth (0x3000) == 2);

      ASSERT (wcwidth (0xB250) == 2);

      ASSERT (wcwidth (0xFF1A) == 2);

#if 0  /* wchar_t may be only 16 bits.  */

      ASSERT (wcwidth (0x20369) == 2);

      ASSERT (wcwidth (0x2F876) == 2);

#endif

    }

  return 0;

}