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Annotation of 43BSD/ucb/window/char.h, revision 1.1.1.1

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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