get_cmd() {
  if (( $# )); then
    IFS= read -ep "$(build_prompt)" "$1"
  fi
}

parse_cmd() {
  local cmd=( ) arg
  declare -n serialized=$1

  route_cmd "$2"

  serialized=*${#cmd[@]}$'\r\n'
  serialized+=${cmd[0]^^}

  for arg in "${cmd[@]:1}"; do
    serialized+=$arg
  done
}

route_cmd() {
  case $1 in
  [[:space:]]*)
    parse_ws "$1"
    ;;
  "")
    return 0
    ;;
  *)
    parse_word "$1"
  esac
}

parse_ws() {
  local line=$1

  while (( ${#line} )) && [[ $line = [[:space:]]* ]]; do
    line=${line:1}
  done

  route_cmd "$line"
}

parse_word() {
  local arg line=$1

  while (( ${#line} )); do
    local next=${line:0:1}

    if [[ $next != [[:space:]] ]]; then
      arg+=$next
      line=${line:1}
    else
      break
    fi
  done

  cmd+=( "\$${#arg}"$'\r\n'"$arg"$'\r\n' )
  route_cmd "$line"
}