attgetopt.c File Reference

#include <stdio.h>
#include <string.h>
#include "gw-config.h"

Go to the source code of this file.

Macros
#define	ERR(s, c)

Functions
int	getopt (int argc, char **argv, char *opts)

Variables
int	opterr = 1
int	optind = 1
int	optopt
char *	optarg

Macro Definition Documentation

ERR

#define ERR	(		s,
			c
	)

Value:

if (opterr) \
            (void) fprintf(stderr, "%s: %s\n", argv[0], s)

Definition at line 75 of file attgetopt.c.

Referenced by getopt().

Function Documentation

getopt()

int getopt	(	int	argc,
		char **	argv,
		char *	opts
	)

Definition at line 84 of file attgetopt.c.

References ERR, optarg, optind, and optopt.

Referenced by main(), and parse_options().

{
        static int sp = 1;
        register int c;
        register char *cp;

        if(sp == 1) {
                if(optind >= argc ||
                   argv[optind][0] != '-' || argv[optind][1] == '\0')
                        return(EOF);
                else if(strcmp(argv[optind], "--") == 0) {
                        optind++;
                        return(EOF);
                }
    }
        optopt = c = argv[optind][sp];
        if(c == ':' || (cp=strchr(opts, c)) == NULL) {
                ERR(": illegal option -- ", c);
                if(argv[optind][++sp] == '\0') {
                        optind++;
                        sp = 1;
                }
                return('?');
        }
        if(*++cp == ':') {
                if(argv[optind][sp+1] != '\0')
                        optarg = &argv[optind++][sp+1];
                else if(++optind >= argc) {
                        ERR(": option requires an argument -- ", c);
                        sp = 1;
                        return('?');
                } else
                        optarg = argv[optind++];
                sp = 1;
        } else {
                if(argv[optind][++sp] == '\0') {
                        sp = 1;
                        optind++;
                }
                optarg = NULL;
        }
        return(c);
}

Variable Documentation

optarg

char* optarg

Definition at line 82 of file attgetopt.c.

Referenced by getopt(), main(), and parse_options().

opterr

int opterr = 1

Definition at line 79 of file attgetopt.c.

optind

int optind = 1

Definition at line 80 of file attgetopt.c.

Referenced by getopt(), and main().

optopt

int optopt

Definition at line 81 of file attgetopt.c.

Referenced by getopt().