1 /* 2 * @(#)char.h 3.3 04/24/85 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) 34