charset.h revision 330571
1114592Sobrien/* 287866Ssheldonh * Copyright (C) 1984-2017 Mark Nudelman 387866Ssheldonh * 4119363Stjr * You may distribute under the terms of either the GNU General Public 587866Ssheldonh * License or the Less License, as specified in the README file. 687866Ssheldonh * 787866Ssheldonh * For more information, see the README file. 887866Ssheldonh */ 987866Ssheldonh 1087866Ssheldonh#define IS_ASCII_OCTET(c) (((c) & 0x80) == 0) 1187866Ssheldonh#define IS_UTF8_TRAIL(c) (((c) & 0xC0) == 0x80) 1287866Ssheldonh#define IS_UTF8_LEAD2(c) (((c) & 0xE0) == 0xC0) 1387866Ssheldonh#define IS_UTF8_LEAD3(c) (((c) & 0xF0) == 0xE0) 1487866Ssheldonh#define IS_UTF8_LEAD4(c) (((c) & 0xF8) == 0xF0) 1587866Ssheldonh#define IS_UTF8_LEAD5(c) (((c) & 0xFC) == 0xF8) 1687866Ssheldonh#define IS_UTF8_LEAD6(c) (((c) & 0xFE) == 0xFC) 1787866Ssheldonh#define IS_UTF8_INVALID(c) (((c) & 0xFE) == 0xFE) 1887866Ssheldonh#define IS_UTF8_LEAD(c) (((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c)) 1988282Ssheldonh