import yaclap

var app = newApp("MyApp")[]
  .version("1.0")
  .author("John Doe <example@email.com>")
  .about("Does awesome things")
  .arg(
    newArg("config")
    .short("-c")
    .long("--config")
    .help("Sets a custom config file")
    .takes_value(true)
  )
  .arg(
    newArg("output")
    .help("Sets an optional output file")
    .index(1)
  )
  .arg(
    newArg("debug")
    .short("-d")
    .multiple(true)
    .help("Turn debugging information on")
  )
  .subcommand(
    newSubCommand("test")
    .about("Has test sub functionality")
    .arg(
      newArg("quiet")
      .short("-q")
      .help("Display less verbose information")
    )
  )

var matches = app.get_matches()

if letSome(o, matches.value_of("output")):
  echo("Value for output: ", o)

if letSome(c, matches.value_of("config")):
  echo("Value for config: ", c)

case matches.occurrences_of("debug")
of 0: echo("Debug mode is off")
of 1: echo("Debug mode is kind of on")
of 2: echo("Debug mode is on")
else: echo("Don't be crazy")

if letSome(matches, matches.subcommand_matches("test")):
  if matches.is_present("quiet"):
    echo("Printing quieter test info...")
  else:
    echo("Printing verbose test info...")