string_explode

//HEADER string_explode.h
/**
 * @author Tibor Dancs (433610) @ fi.muni.cz
 */
#ifndef STRING_EXPLODE.H
#define STRING_EXPLODE.H

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

/**
 * @brief explode Takes char* in as formated input and const char *separator as priority heap of separators
 * @param in char* formated input
 * @param separator const char* priority heap of separators
 * @return original char array if no separator matched, single string if locateb between any {start of input, separator, end of string} or NULL if no strings to parse
 */
char *explode(char *in, const char *separator);

#endif

//SOURCE string_explode.c
/**
 * @author Tibor Dancs (433610) @ fi.muni.cz
 */
#include "string_explode.h"
char *explode(char *in, const char *separator) {

    static char *pos;

    if (!separator || !strcmp(separator,"")){
        if (pos){
            free(pos);
            pos = NULL;
        }
        return in;
    }

    char *ret;

    if (in) {
        pos = in;
    }

    if (!pos){
        return NULL;
    }

    //printf("\tDEB:%d:%s\t%d:%s\n",strlen(pos),pos,strlen(separator),separator);
    //printf("\tINFO:String ok:%s\n",pos);

    unsigned int i = 0;
    while (i < strlen(pos)){
        for (unsigned int j = 0;j < strlen(separator);j++){
            //printf("\t%c == %c\n",pos[i],separator[j]);
            if (pos[i] == separator[j]){
                ret = (char*)malloc(i+1);
                strncpy(ret,pos,i);
                ret[i] = '\0';
                //printf("\tINFO:copy string:%s\n",ret);
                char *tmp = (char*)malloc(strlen(pos) - i);
                strcpy(tmp,pos+i+1);
                //printf("\tINFO:copy temp:%s\n",tmp);
                if (pos) {
                    free(pos);
                }
                pos = tmp;
                //printf("\tINFO:free pos\n");
                return ret;
            }
        }
        //printf("\t~\n");
        i++;
    }

    char *tmp = (char*)malloc(strlen(pos)+1);
    strcpy(tmp,pos);
    if (pos){
        free(pos);
    }
    pos = NULL;
    return tmp;

}