open Http_client
open Str

(* Regexp required here *)
let is_youtube_url url =
  let regexp = Str.regexp "http://www.youtube.com/.+" in
  Str.string_match regexp url 0;;

(* Maybe have a list of functions and
 * iter on all the items in the list *)
let evaluate str =
  match str with
  | str when is_youtube_url str -> "that's youtube"
  | _ -> str;;


try
  while true do
    print_string "> ";
    let line = read_line () in
    let answer = evaluate line in
    print_endline answer
  done
with
  End_of_file -> print_endline "Bye!";;