1161475Sdelphij/*
2240121Sdelphij * Copyright (C) 1984-2012  Mark Nudelman
3161475Sdelphij *
4161475Sdelphij * You may distribute under the terms of either the GNU General Public
5161475Sdelphij * License or the Less License, as specified in the README file.
6161475Sdelphij *
7240121Sdelphij * For more information, see the README file.
8161475Sdelphij */
9161475Sdelphij
10161475Sdelphij#define IS_ASCII_OCTET(c)   (((c) & 0x80) == 0)
11161475Sdelphij#define IS_UTF8_TRAIL(c)    (((c) & 0xC0) == 0x80)
12161475Sdelphij#define IS_UTF8_LEAD2(c)    (((c) & 0xE0) == 0xC0)
13161475Sdelphij#define IS_UTF8_LEAD3(c)    (((c) & 0xF0) == 0xE0)
14161475Sdelphij#define IS_UTF8_LEAD4(c)    (((c) & 0xF8) == 0xF0)
15161475Sdelphij#define IS_UTF8_LEAD5(c)    (((c) & 0xFC) == 0xF8)
16161475Sdelphij#define IS_UTF8_LEAD6(c)    (((c) & 0xFE) == 0xFC)
17161475Sdelphij#define IS_UTF8_INVALID(c)  (((c) & 0xFE) == 0xFE)
18161475Sdelphij#define IS_UTF8_LEAD(c)     (((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c))
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