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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)char.h 8.1 (Berkeley) 6/6/93
*/
/*
* Macros and things to deal with control characters.
*
* Unctrl() is just like the standard function, except we don't want
* to include curses.
* Isctrl() returns true for all characters less than space and
* greater than or equal to delete.
* Isprt() is tab and all characters not isctrl(). It's used
* by wwwrite().
* Isunctrl() includes all characters that should be expanded
* using unctrl() by wwwrite() if ww_unctrl is set.
*/
extern char *_unctrl[];
extern char _cmap[];
#define ctrl(c) (c & 0x1f)
#define unctrl(c) (_unctrl[(unsigned char) (c)])
#define _C 0x01
#define _P 0x02
#define _U 0x04
#define isctrl(c) (_cmap[(unsigned char) (c)] & _C)
#define isprt(c) (_cmap[(unsigned char) (c)] & _P)
#define isunctrl(c) (_cmap[(unsigned char) (c)] & _U)
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