usr.bin/window/char.h

   1 /*      $NetBSD: char.h,v 1.5 2009/04/14 08:50:06 lukem Exp $   */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)char.h      8.1 (Berkeley) 6/6/93
  35  */
  36
  37 /*
  38  * Macros and things to deal with control characters.
  39  *
  40  * Unctrl() is just like the standard function, except we don't want
  41  * to include curses.
  42  * Isctrl() returns true for all characters less than space and
  43  * greater than or equal to delete.
  44  * Isprt() is tab and all characters not isctrl().  It's used
  45  * by wwwrite().
  46  * Isunctrl() includes all characters that should be expanded
  47  * using unctrl() by wwwrite() if ww_unctrl is set.
  48  */
  49
  50 extern const char *_unctrl[];
  51 extern char _cmap[];
  52 #define ctrl(c)         (c & 0x1f)
  53 #define unctrl(c)       (_unctrl[(unsigned char) (c)])
  54 #define _C              0x01
  55 #define _P              0x02
  56 #define _U              0x04
  57 #define isctrl(c)       (_cmap[(unsigned char) (c)] & _C)
  58 #define isprt(c)        (_cmap[(unsigned char) (c)] & _P)
  59 #define isunctrl(c)     (_cmap[(unsigned char) (c)] & _U)