The Abyss – Maris Laboratories

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

char ** split(char *delimiter, char *str);

char ** split(char *delimiter, char *str) {
    char **elements = (char **) calloc(1, sizeof(char));
    char **_elements = NULL;
   
    /*
     * x to track strpos offset in *str and e for element tick and current delimiter position, i for var
     * start for the start of the substr and stop for the end
     */
    int x = 0, e = 0, d = 0, next_d = -1, start, stop, str_size = (int) strlen(str);
    while ((d = strpos(delimiter, str, x)) != -1) {
       
        if ((next_d = strpos(delimiter, str, x + 1)) == -1) next_d = str_size;
       
        if (x == 0 && str[0] != str[d] && e == 0) {
            /* lets not skip the first group */
            next_d = d, d = 0, start = d, stop = next_d;
        } else if (x == 0 && str[0] == str[d] && e == 0) {
            /* this runs if the delimiter is the first character in the search */
            next_d = 1, start = 0, stop = 0;
        } else {
            /* increment d so that we can start from the proper pos in substr */
            x++, start = d + 1, stop = (next_d - d) - 1;
        }
       
        elements[e] = (char *) calloc(next_d - d, sizeof(char));
       
        strcpy(elements[e], substr(str, start, stop));
       
        /* debugging information */
        //printf("%s\n", elements[e]);
       
        _elements = realloc(elements, (e + 2) * sizeof(char *));
        elements = _elements;
       
        e++;
    }
   
    return elements;
}

int main(void) {
    system("clear");
   
    char *text = "This,is,split,by,a,comma,delimiter!";
    char **s = split(",", text);
   
    return 0;
}