freebsd-dev/contrib/less/charset.h

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2012-07-23 21:31:53 +00:00
/*
2023-05-01 08:22:19 +00:00
* Copyright (C) 1984-2023 Mark Nudelman
2012-07-23 21:31:53 +00:00
*
* 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.
*/
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#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))