bin/less/charset.h

   1 /*
   2  * Copyright (C) 1984-2012  Mark Nudelman
   3  * Modified for use with illumos by Garrett D'Amore.
   4  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   5  *
   6  * You may distribute under the terms of either the GNU General Public
   7  * License or the Less License, as specified in the README file.
   8  *
   9  * For more information, see the README file.
  10  */
  11
  12 #define IS_ASCII_OCTET(c)       (((c) & 0x80) == 0)
  13 #define IS_UTF8_TRAIL(c)        (((c) & 0xC0) == 0x80)
  14 #define IS_UTF8_LEAD2(c)        (((c) & 0xE0) == 0xC0)
  15 #define IS_UTF8_LEAD3(c)        (((c) & 0xF0) == 0xE0)
  16 #define IS_UTF8_LEAD4(c)        (((c) & 0xF8) == 0xF0)
  17 #define IS_UTF8_LEAD5(c)        (((c) & 0xFC) == 0xF8)
  18 #define IS_UTF8_LEAD6(c)        (((c) & 0xFE) == 0xFC)
  19 #define IS_UTF8_INVALID(c)      (((c) & 0xFE) == 0xFE)
  20 #define IS_UTF8_LEAD(c)         (((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c))