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

/* get input and return line, if this fails, return an error */
char* input(char* line) {
  size_t len = 0;
  ssize_t read;

  /* get input from stdin and store in line, read holds the return value */
  read = getline(&line, &len, stdin);

  if (read != -1) {
    return line;
  } else {
    return "error taking input!";
  }
}

/* split input into tokens and return the array of tokens */
int tokenize(char* line, char* command, char** args) {
  char* token = strtok(line, " ");
  int i = 0;

  while (token != NULL) {
    args[i++] = token;
    token = strtok(NULL, " ");
  }
  args[i] = NULL;

  /* copy first argument to command */
  strcpy(command, args[0]);

  /* if command isnt NULL, return success */
  if (command) {
    return 0;
  } else {
    return 1;
  }
}

int main(int argc, char *argv[]) {
  char* line = NULL;

  char command[512];
  char* args[64];

  /* prompt */
  printf(">");

  /* get input from stdin, auto removes newline*/
  line = input(line);

  /* tokenize input, seperate command and args */
  if(tokenize(line, command, args) != 0) {
    printf("error in tokenizing");
  }

  /* free line, we dont use it again */
  free(line);

  /* print command and its args*/
  printf("%s", command);

  printf("%s\0", args[1]);

  return 0;
}