1 /* 2 * Copyright (C) 1984-2023 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information, see the README file. 8 */ 9 10 #define IS_ASCII_OCTET(c) (((c) & 0x80) == 0) 11 #define IS_UTF8_TRAIL(c) (((c) & 0xC0) == 0x80) 12 #define IS_UTF8_LEAD2(c) (((c) & 0xE0) == 0xC0) 13 #define IS_UTF8_LEAD3(c) (((c) & 0xF0) == 0xE0) 14 #define IS_UTF8_LEAD4(c) (((c) & 0xF8) == 0xF0) 15 #define IS_UTF8_LEAD5(c) (((c) & 0xFC) == 0xF8) 16 #define IS_UTF8_LEAD6(c) (((c) & 0xFE) == 0xFC) 17 #define IS_UTF8_INVALID(c) (((c) & 0xFE) == 0xFE) 18 #define IS_UTF8_LEAD(c) (((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c)) 19