getopt-test.c

#include <stdio.h>
#include <stdlib.h>
#include "getopt.h"
#include <WinSock2.h>
#include <ws2ipdef.h>

int
main(int argc, char** argv)
{

	int c;
	int digit_optind = 0;

	while (1)
	{
		int this_option_optind = optind ? optind : 1;
		int option_index = 0;
		static const struct option long_options[] =
		{
	  {"add", 1, 0, 0},
	  {"append", 0, 0, 0},
	  {"delete", 1, 0, 0},
	  {"verbose", 0, 0, 0},
	  {"create", 0, 0, 0},
	  {"file", 1, 0, 0},
	  {0, 0, 0, 0}
		};

		c = getopt_long(argc, argv, "abc:d:0123456789",
			long_options, &option_index);
		if (c == -1)
			break;

		switch (c)
		{
		case 0:
			printf("option %s", long_options[option_index].name);
			if (optarg)
				printf(" with arg %s", optarg);
			printf("\n");
			break;

		case '0':
		case '1':
		case '2':
		case '3':
		case '4':
		case '5':
		case '6':
		case '7':
		case '8':
		case '9':
			if (digit_optind != 0 && digit_optind != this_option_optind)
				printf("digits occur in two different argv-elements.\n");
			digit_optind = this_option_optind;
			printf("option %c\n", c);
			break;

		case 'a':
			printf("option a\n");
			break;

		case 'b':
			printf("option b\n");
			break;

		case 'c':
			printf("option c with value '%s'\n", optarg);
			break;

		case 'd':
			printf("option d with value '%s'\n", optarg);
			break;

		case '?':
			break;

		default:
			printf("?? getopt returned character code 0%o ??\n", c);
		}
	}

	if (optind < argc)
	{
		printf("non-option ARGV-elements: ");
		while (optind < argc)
			printf("%s ", argv[optind++]);
		printf("\n");
	}

	exit(0);
}