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LANGUAGE OS.iso
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gnu
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less-177.lha
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option.h
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C/C++ Source or Header
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1991-03-06
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1KB
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39 lines
#define END_OPTION_STRING ('$')
/*
* Types of options.
*/
#define BOOL 01 /* Boolean option: 0 or 1 */
#define TRIPLE 02 /* Triple-valued option: 0, 1 or 2 */
#define NUMBER 04 /* Numeric option */
#define STRING 010 /* String-valued option */
#define NOVAR 020 /* No associated variable */
#define REPAINT 040 /* Repaint screen after toggling option */
#define NO_TOGGLE 0100 /* Option cannot be toggled with "-" cmd */
#define OTYPE (BOOL|TRIPLE|NUMBER|STRING|NOVAR)
/*
* Argument to a handling function tells what type of activity:
*/
#define INIT 0 /* Initialization (from command line) */
#define QUERY 1 /* Query (from _ or - command) */
#define TOGGLE 2 /* Change value (from - command) */
/* Flag to toggle_option to specify how to "toggle" */
#define OPT_NO_TOGGLE 0
#define OPT_TOGGLE 1
#define OPT_UNSET 2
#define OPT_SET 3
struct option
{
char oletter; /* The controlling letter (a-z) */
char otype; /* Type of the option */
int odefault; /* Default value */
int *ovar; /* Pointer to the associated variable */
void (*ofunc)(); /* Pointer to special handling function */
char *odesc[3]; /* Description of each value */
};