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

/* TODO */
static int run_cmd(const char *cmd, int argc, char *argv[]) {
	puts(cmd);
	for (int i = 0; i < argc; i++) {
		puts(argv[i]);
	}

	return 0;
}

/* Tricks with pointers */
int parse(char *str) {
	char *cmd = str;
	str += strcspn(str, separator);
	if (*str) {
		*str++ = 0;
	}

	char *str_counter = str;
	int i = 0;
	for (; *str_counter; i++) {
		str_counter += strspn(str, separator);
		if (!*str_counter) {
			break;
		}
		*str_counter++ = 0;

		str_counter += strcspn(str_counter, separator);
		if(!str) {
			return EINVAL;
		}
		*str++ = 0;
	}

	char *args[i];
	for (int j = 0; *str; j++) {
		str += strspn(str, separator);
		if (!*str) {
			break;
		}
		*str++ = 0;

		args[j] = str;
		str += strcspn(str, separator);
		if(!str) {
			return EINVAL;
		}
		*str++ = 0;

		/* TODO: parse the string left to an array of arguments and pass command
		 * itself and arguments to the run_cmd() right after end of this loop
		 */
	}

	int response = run_cmd(cmd, i, args);
	return response;
}