test_getopt_long.c

#include <stdio.h>
#include <getopt.h>

int main(int argc, char *argv[])
{
	int enable_dog;
	int enable_egg;
	int enable_farm;

	struct option cmd_long_options[] = {
		{"apple", required_argument, NULL, (int)('A')},
		{"boy", required_argument, NULL, (int)('b')},
		{"cat", no_argument, NULL, 3},
		{"dog", no_argument, &enable_dog, 4},
		{"egg", required_argument, &enable_egg, 5},
		{"farm", optional_argument, &enable_farm, 6},
		{(char *)(0), 0, (int *)(0), 0}
	};

	int i;

	enable_dog = -1;
	enable_egg = -2;
	enable_farm = -3;

	optind = 1;

	for(i = 1; i < (2*argc); i++) {
		char *current_opt;
		int parsed_opt;
		int option_index;
		char *option_value;

		if(optind >= argc)
		{
			printf("INFO: (optind:%d >= argc:%d). @[%s:%d]\n", optind, argc, __FILE__, __LINE__);
			break;
		}

		current_opt = argv[optind];
		option_index = -1;

		printf("(round=%d/%d)>> option: [%s]\n", i, optind, current_opt);

		parsed_opt = getopt_long(argc, argv, "aBG:hk:012", cmd_long_options, &option_index);

		option_value = (NULL == optarg) ? "(N/A)" : optarg;
		printf("parsed: %d (%c): %s\n", parsed_opt, (char)(parsed_opt), option_value);
		printf("enable-value: dog=%d, egg=%d, farm=%d.\n", enable_dog, enable_egg, enable_farm);
	}

	return 0;
}



/*
vim: ts=4 sw=4 ai nowrap
*/