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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)char.h      3.6 (Berkeley) 6/29/88
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * Macros and things to deal with control characters.
        !            22:  *
        !            23:  * Unctrl() is just like the standard function, except we don't want
        !            24:  * to include curses.
        !            25:  * Isctrl() returns true for all characters less than space and
        !            26:  * greater than or equal to delete.
        !            27:  * Isprt() is tab and all characters not isctrl().  It's used
        !            28:  * by wwwrite().
        !            29:  * Isunctrl() includes all characters that should be expanded
        !            30:  * using unctrl() by wwwrite() if ww_unctrl is set.
        !            31:  */
        !            32: 
        !            33: char *_unctrl[];
        !            34: char _cmap[];
        !            35: #define ctrl(c)                (c & 0x1f)
        !            36: #define unctrl(c)      (_unctrl[(unsigned char) (c)])
        !            37: #define _C             0x01
        !            38: #define _P             0x02
        !            39: #define _U             0x04
        !            40: #define isctrl(c)      (_cmap[(unsigned char) (c)] & _C)
        !            41: #define isprt(c)       (_cmap[(unsigned char) (c)] & _P)
        !            42: #define isunctrl(c)    (_cmap[(unsigned char) (c)] & _U)

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