#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "assign2_funcs.h"

//get input and split up input array
char **get_input(char *input)
{
  int i=0;
  int buffer = COMMAND_BUFF;
  char **command;
  //printf("values assigned\n");

  if((command = malloc(COMMAND_BUFF * sizeof(char))) == NULL){  //this allocates memmory to the commands double pointer
    write(STDOUT_FILENO, MALLOC_FAIL, sizeof(MALLOC_FAIL));
    exit(EXIT_FAILURE); //if unsuccessful, prints error message and exits
  }

    // Returns first token
    char* token = strtok(input, " ");

   // printf("token strtoked\n") ;

    // Keep printing tokens while one of the
    // delimiters present in str[].
    while (token != NULL) {
       // printf("%s\n", token);
        command[i] = token; //assign string to first slot in command
        //printf("i = %d\n", i);
        i++;
        if(i >= (sizeof(command))/(sizeof(command[0]))){

          if( (command = realloc(command, (sizeof(char*) * (buffer + COMMAND_BUFF)) )) == NULL){
            write(STDOUT_FILENO, MALLOC_FAIL, sizeof(MALLOC_FAIL));
            exit(EXIT_FAILURE); //if unsuccessful, prints error message and exits

          }

        }

        token = strtok(NULL, " ");
    }

    //printf("after while\n");
    command[i] = NULL;
    return command;
}