option.h revision 195941
1/* 2 * Copyright (C) 1984-2009 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information about less, or for information on how to 8 * contact the author, see the README file. 9 */ 10 11 12#define END_OPTION_STRING ('$') 13 14/* 15 * Types of options. 16 */ 17#define BOOL 01 /* Boolean option: 0 or 1 */ 18#define TRIPLE 02 /* Triple-valued option: 0, 1 or 2 */ 19#define NUMBER 04 /* Numeric option */ 20#define STRING 010 /* String-valued option */ 21#define NOVAR 020 /* No associated variable */ 22#define REPAINT 040 /* Repaint screen after toggling option */ 23#define NO_TOGGLE 0100 /* Option cannot be toggled with "-" cmd */ 24#define HL_REPAINT 0200 /* Repaint hilites after toggling option */ 25#define NO_QUERY 0400 /* Option cannot be queried with "_" cmd */ 26#define INIT_HANDLER 01000 /* Call option handler function at startup */ 27 28#define OTYPE (BOOL|TRIPLE|NUMBER|STRING|NOVAR) 29 30/* 31 * Argument to a handling function tells what type of activity: 32 */ 33#define INIT 0 /* Initialization (from command line) */ 34#define QUERY 1 /* Query (from _ or - command) */ 35#define TOGGLE 2 /* Change value (from - command) */ 36 37/* Flag to toggle_option to specify how to "toggle" */ 38#define OPT_NO_TOGGLE 0 39#define OPT_TOGGLE 1 40#define OPT_UNSET 2 41#define OPT_SET 3 42#define OPT_NO_PROMPT 0100 43 44/* Error code from findopt_name */ 45#define OPT_AMBIG 1 46 47struct optname 48{ 49 char *oname; /* Long (GNU-style) option name */ 50 struct optname *onext; /* List of synonymous option names */ 51}; 52 53struct loption 54{ 55 char oletter; /* The controlling letter (a-z) */ 56 struct optname *onames; /* Long (GNU-style) option name */ 57 int otype; /* Type of the option */ 58 int odefault; /* Default value */ 59 int *ovar; /* Pointer to the associated variable */ 60 void (*ofunc)(); /* Pointer to special handling function */ 61 char *odesc[3]; /* Description of each value */ 62}; 63 64