freebsd-dev/contrib/less/charset.h
Xin LI b7780dbe98 MFV r349535: less v551.
MFC after:	2 weeks
Relnotes:	yes
2019-06-29 18:41:40 +00:00

19 lines
717 B
C

/*
* Copyright (C) 1984-2019 Mark Nudelman
*
* You may distribute under the terms of either the GNU General Public
* License or the Less License, as specified in the README file.
*
* For more information, see the README file.
*/
#define IS_ASCII_OCTET(c) (((c) & 0x80) == 0)
#define IS_UTF8_TRAIL(c) (((c) & 0xC0) == 0x80)
#define IS_UTF8_LEAD2(c) (((c) & 0xE0) == 0xC0)
#define IS_UTF8_LEAD3(c) (((c) & 0xF0) == 0xE0)
#define IS_UTF8_LEAD4(c) (((c) & 0xF8) == 0xF0)
#define IS_UTF8_LEAD5(c) (((c) & 0xFC) == 0xF8)
#define IS_UTF8_LEAD6(c) (((c) & 0xFE) == 0xFC)
#define IS_UTF8_INVALID(c) (((c) & 0xFE) == 0xFE)
#define IS_UTF8_LEAD(c) (((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c))