#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "getopt.h" 

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

int
getoptions(int argc, char* argv[], char* opts)
{
	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)) == 0) {
		printf("%s : illegal option -- %c",argv[0], 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) {
			printf("%s : option requires an argument -- %c", argv[0], c);
			sp = 1;
			return('?');
		} else
			optarg = argv[optind++];
		sp = 1;
	} else {
		if(argv[optind][++sp] == '\0') {
			sp = 1;
			optind++;
		}
		optarg = 0;
	}
	return(c);
}