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Annotation of 43BSDReno/usr.bin/window/char.h, revision 1.1.1.1

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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