xref: /minix/external/bsd/less/dist/option.h (revision 84d9c625)
1 /*	$NetBSD: option.h,v 1.4 2013/09/04 19:44:21 tron Exp $	*/
2 
3 /*
4  * Copyright (C) 1984-2012  Mark Nudelman
5  *
6  * You may distribute under the terms of either the GNU General Public
7  * License or the Less License, as specified in the README file.
8  *
9  * For more information, see the README file.
10  */
11 
12 
13 #define	END_OPTION_STRING	('$')
14 
15 /*
16  * Types of options.
17  */
18 #define	BOOL		01	/* Boolean option: 0 or 1 */
19 #define	TRIPLE		02	/* Triple-valued option: 0, 1 or 2 */
20 #define	NUMBER		04	/* Numeric option */
21 #define	STRING		010	/* String-valued option */
22 #define	NOVAR		020	/* No associated variable */
23 #define	REPAINT		040	/* Repaint screen after toggling option */
24 #define	NO_TOGGLE	0100	/* Option cannot be toggled with "-" cmd */
25 #define	HL_REPAINT	0200	/* Repaint hilites after toggling option */
26 #define	NO_QUERY	0400	/* Option cannot be queried with "_" cmd */
27 #define	INIT_HANDLER	01000	/* Call option handler function at startup */
28 
29 #define	OTYPE		(BOOL|TRIPLE|NUMBER|STRING|NOVAR)
30 
31 #define OLETTER_NONE    '\1'     /* Invalid option letter */
32 
33 /*
34  * Argument to a handling function tells what type of activity:
35  */
36 #define	INIT	0	/* Initialization (from command line) */
37 #define	QUERY	1	/* Query (from _ or - command) */
38 #define	TOGGLE	2	/* Change value (from - command) */
39 
40 /* Flag to toggle_option to specify how to "toggle" */
41 #define	OPT_NO_TOGGLE	0
42 #define	OPT_TOGGLE	1
43 #define	OPT_UNSET	2
44 #define	OPT_SET		3
45 #define OPT_NO_PROMPT	0100
46 
47 /* Error code from findopt_name */
48 #define OPT_AMBIG       1
49 
50 struct optname
51 {
52 	char *oname;            /* Long (GNU-style) option name */
53 	struct optname *onext;  /* List of synonymous option names */
54 };
55 
56 #define OPTNAME_MAX	32	/* Max length of long option name */
57 
58 struct loption
59 {
60 	char oletter;		/* The controlling letter (a-z) */
61 	struct optname *onames; /* Long (GNU-style) option name */
62 	int otype;		/* Type of the option */
63 	int odefault;		/* Default value */
64 	int *ovar;		/* Pointer to the associated variable */
65 	void (*ofunc)		/* Pointer to special handling function */
66 	    __P((int, char *));
67 	char *odesc[3];		/* Description of each value */
68 };
69 
70