split char* into char*[]

StringSplit.c

/*
 ============================================================================
 Name        : StringSplit.c
 Author      : 
 Version     :
 Copyright   : 
 Description : Hello World in C, Ansi-style
 ============================================================================
 */

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

size_t string_split(const char* str, const char* delimiters, char** arr,
		size_t strarray_size);

size_t string_split(const char* str, const char* delimiters, char** strarray,
		size_t strarray_size) {
	char* str_pointer = (char*) str;

	size_t delimiter_pos = 0;
	size_t result = 0;

	while (result < strarray_size) {

		if (result == strarray_size - 1) {
			size_t last_token_len = strlen(str_pointer);
			*strarray = (char*) realloc(*strarray, last_token_len + 1);
			memset(*strarray, 0, last_token_len + 1);
			strncpy(*strarray, str_pointer, last_token_len);

		} else {
			delimiter_pos = strcspn(str_pointer, delimiters);

			*strarray = (char*) realloc(*strarray, delimiter_pos + 1);
			memset(*strarray, 0, delimiter_pos + 1);
			strncpy(*strarray, str_pointer, delimiter_pos);

			if (delimiter_pos >= strlen(str_pointer)) {
				++result;
				break;
			}

			str_pointer += delimiter_pos + 1;
			++(strarray);
		}

		++result;
	}

	return result;
}

int main(int argc, char* argv[]) {
	char* arr[4] = { 0 };
	size_t splitted = string_split(",,abc,", ",", arr, 4);

	printf("split to %d part(s)\n", splitted);

	size_t i;
	for (i = 0; i < 4; ++i) {
		printf("%d:%s\n", i, arr[i]);
		free(arr[i]);
	}

	return EXIT_SUCCESS;
}