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Annotation of src/usr.bin/less/charset.h, Revision 1.1

1.1     ! shadchin    1: /*
        !             2:  * Copyright (C) 2005-2011  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 about less, or for information on how to
        !             8:  * contact the author, see the README file.
        !             9:  */
        !            10:
        !            11: #define IS_ASCII_OCTET(c)   (((c) & 0x80) == 0)
        !            12: #define IS_UTF8_TRAIL(c)    (((c) & 0xC0) == 0x80)
        !            13: #define IS_UTF8_LEAD2(c)    (((c) & 0xE0) == 0xC0)
        !            14: #define IS_UTF8_LEAD3(c)    (((c) & 0xF0) == 0xE0)
        !            15: #define IS_UTF8_LEAD4(c)    (((c) & 0xF8) == 0xF0)
        !            16: #define IS_UTF8_LEAD5(c)    (((c) & 0xFC) == 0xF8)
        !            17: #define IS_UTF8_LEAD6(c)    (((c) & 0xFE) == 0xFC)
        !            18: #define IS_UTF8_INVALID(c)  (((c) & 0xFE) == 0xFE)
        !            19: #define IS_UTF8_LEAD(c)     (((c) & 0xC0) == 0xC0 && !IS_UTF8_INVALID(c))