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Annotation of 43BSDReno/usr.bin/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:  * This code is derived from software contributed to Berkeley by
        !             6:  * Edward Wang at The University of California, Berkeley.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted provided
        !             9:  * that: (1) source distributions retain this entire copyright notice and
        !            10:  * comment, and (2) distributions including binaries display the following
        !            11:  * acknowledgement:  ``This product includes software developed by the
        !            12:  * University of California, Berkeley and its contributors'' in the
        !            13:  * documentation or other materials provided with the distribution and in
        !            14:  * all advertising materials mentioning features or use of this software.
        !            15:  * Neither the name of the University nor the names of its contributors may
        !            16:  * be used to endorse or promote products derived from this software without
        !            17:  * specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  *
        !            22:  *     @(#)char.h      3.9 (Berkeley) 6/6/90
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Macros and things to deal with control characters.
        !            27:  *
        !            28:  * Unctrl() is just like the standard function, except we don't want
        !            29:  * to include curses.
        !            30:  * Isctrl() returns true for all characters less than space and
        !            31:  * greater than or equal to delete.
        !            32:  * Isprt() is tab and all characters not isctrl().  It's used
        !            33:  * by wwwrite().
        !            34:  * Isunctrl() includes all characters that should be expanded
        !            35:  * using unctrl() by wwwrite() if ww_unctrl is set.
        !            36:  */
        !            37: 
        !            38: extern char *_unctrl[];
        !            39: extern char _cmap[];
        !            40: #define ctrl(c)                (c & 0x1f)
        !            41: #define unctrl(c)      (_unctrl[(unsigned char) (c)])
        !            42: #define _C             0x01
        !            43: #define _P             0x02
        !            44: #define _U             0x04
        !            45: #define isctrl(c)      (_cmap[(unsigned char) (c)] & _C)
        !            46: #define isprt(c)       (_cmap[(unsigned char) (c)] & _P)
        !            47: #define isunctrl(c)    (_cmap[(unsigned char) (c)] & _U)

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