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      1 /*	$NetBSD: less.h,v 1.6 2009/01/24 13:58:21 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 Mark Nudelman
      5  * Copyright (c) 1988, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of the University nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  *
     32  *	@(#)less.h	8.1 (Berkeley) 6/6/93
     33  */
     34 
     35 #define	NULL_POSITION	((off_t)(-1))
     36 
     37 #define	EOI		(0)
     38 #define	READ_INTR	(-2)
     39 
     40 /* Special chars used to tell put_line() to do something special */
     41 #define	UL_CHAR		'\201'		/* Enter underline mode */
     42 #define	UE_CHAR		'\202'		/* Exit underline mode */
     43 #define	BO_CHAR		'\203'		/* Enter boldface mode */
     44 #define	BE_CHAR		'\204'		/* Exit boldface mode */
     45 
     46 #define	CONTROL_CHAR(c)		(iscntrl((unsigned char)c))
     47 #define	CARAT_CHAR(c)		((c == '\177') ? '?' : (c | 0100))
     48 
     49 #define	TOP		(0)
     50 #define	TOP_PLUS_ONE	(1)
     51 #define	BOTTOM		(-1)
     52 #define	BOTTOM_PLUS_ONE	(-2)
     53 #define	MIDDLE		(-3)
     54 
     55 #define	A_INVALID		-1
     56 
     57 #define	A_AGAIN_SEARCH		1
     58 #define	A_B_LINE		2
     59 #define	A_B_SCREEN		3
     60 #define	A_B_SCROLL		4
     61 #define	A_B_SEARCH		5
     62 #define	A_DIGIT			6
     63 #define	A_EXAMINE		7
     64 #define	A_FREPAINT		8
     65 #define	A_F_LINE		9
     66 #define	A_F_SCREEN		10
     67 #define	A_F_SCROLL		11
     68 #define	A_F_SEARCH		12
     69 #define	A_GOEND			13
     70 #define	A_GOLINE		14
     71 #define	A_GOMARK		15
     72 #define	A_HELP			16
     73 #define	A_NEXT_FILE		17
     74 #define	A_PERCENT		18
     75 #define	A_PREFIX		19
     76 #define	A_PREV_FILE		20
     77 #define	A_QUIT			21
     78 #define	A_REPAINT		22
     79 #define	A_SETMARK		23
     80 #define	A_STAT			24
     81 #define	A_VISUAL		25
     82 #define	A_TAGFILE		26
     83 #define	A_FILE_LIST		27
     84