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Annotation of 43BSD/ucb/window/char.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * @(#)char.h  3.3 4/24/85
        !             3:  */
        !             4: 
        !             5: /*
        !             6:  * Copyright (c) 1983 Regents of the University of California,
        !             7:  * All rights reserved.  Redistribution permitted subject to
        !             8:  * the terms of the Berkeley Software License Agreement.
        !             9:  */
        !            10: 
        !            11: /*
        !            12:  * Macros and things to deal with control characters.
        !            13:  *
        !            14:  * Unctrl() is just like the standard function, except we don't want
        !            15:  * to include curses.
        !            16:  * Isctrl() returns true for all characters less than space and
        !            17:  * greater than or equal to delete.
        !            18:  * Isprt() is tab and all characters not isctrl().  It's used
        !            19:  * by wwwrite().
        !            20:  * Isunctrl() includes all characters that should be expanded
        !            21:  * using unctrl() by wwwrite() if ww_unctrl is set.
        !            22:  */
        !            23: 
        !            24: char *_unctrl[];
        !            25: char _cmap[];
        !            26: #define ctrl(c)                ('c' & 0x1f)
        !            27: #define unctrl(c)      (_unctrl[(unsigned char) (c)])
        !            28: #define _C             0x01
        !            29: #define _P             0x02
        !            30: #define _U             0x04
        !            31: #define isctrl(c)      (_cmap[(unsigned char) (c)] & _C)
        !            32: #define isprt(c)       (_cmap[(unsigned char) (c)] & _P)
        !            33: #define isunctrl(c)    (_cmap[(unsigned char) (c)] & _U)

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