/* locale information

   Copyright 2016-2017 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, 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, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA

   02110-1301, USA.  */

/* Written by Paul Eggert.  */

#include <limits.h>

#include <stdbool.h>

#include <wchar.h>

struct localeinfo

{

  /* MB_CUR_MAX > 1.  */

  bool multibyte;

  /* The locale uses UTF-8.  */

  bool using_utf8;

  /* An array indexed by byte values B that contains 1 if B is a

     single-byte character, -1 if B is an encoding error, and -2 if B

     is the leading byte of a multibyte character that contains more

     than one byte.  */

  signed char sbclen[UCHAR_MAX + 1];

  /* An array indexed by byte values B that contains the corresponding

     wide character (if any) for B if sbclen[B] == 1.  WEOF means the

     byte is not a valid single-byte character, i.e., sbclen[B] == -1

     or -2.  */

  wint_t sbctowc[UCHAR_MAX + 1];

};

extern void init_localeinfo (struct localeinfo *);

/* Maximum number of characters that can be the case-folded

   counterparts of a single character, not counting the character

   itself.  This is a generous upper bound.  */

enum { CASE_FOLDED_BUFSIZE = 32 };

extern int case_folded_counterparts (wint_t, wchar_t[CASE_FOLDED_BUFSIZE]);