1 /* 2 * Copyright (C) 1984-2026 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, see the README file. 8 */ 9 10 11 #define END_OPTION_STRING ('$') 12 13 /* 14 * Types of options. 15 */ 16 #define O_BOOL 01 /* Boolean option: 0 or 1 */ 17 #define O_TRIPLE 02 /* Triple-valued option: 0, 1 or 2 */ 18 #define O_NUMBER 04 /* Numeric option */ 19 #define O_STRING 010 /* String-valued option */ 20 #define O_NOVAR 020 /* No associated variable */ 21 #define O_REPAINT 040 /* Repaint screen after toggling option */ 22 #define O_NO_TOGGLE 0100 /* Option cannot be toggled with "-" cmd */ 23 #define O_HL_REPAINT 0200 /* Repaint hilites after toggling option */ 24 #define O_NO_QUERY 0400 /* Option cannot be queried with "_" cmd */ 25 #define O_INIT_HANDLER 01000 /* Call option handler function at startup */ 26 #define O_UNSUPPORTED 02000 /* Option is unsupported via LESS_UNSUPPORT */ 27 #define O_NEGOK 04000 /* O_NUMBER parameter may be negative */ 28 29 #define OTYPE (O_BOOL|O_TRIPLE|O_NUMBER|O_STRING|O_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 constant 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)(int, constant char*); /* Pointer to special handling function */ 66 lessmsg_id odescid[3]; /* lmsg id for description of each value */ 67 constant char *odesc[3]; /* Description of each value */ 68 }; 69 70