class Gherkin::Cli::Main

def self.die(msg)
  Trollop::die("#{msg}\nusage: gherkin COMMAND [ARGS]\nAvailable commands: #{Tools::SUB_COMMANDS.join(' ')}")
end

def self.run(args)
  Trollop::options(args) do
    banner "Super fast gherkin parser"
    stop_on Tools::SUB_COMMANDS
  end
  cmd_name = args.shift
  die("Missing command") if cmd_name.nil?
  cmd = Tools.const_get(cmd_name.capitalize.to_sym).new(args) rescue die("Unknown command #{cmd_name}")
  begin
    cmd.run
  rescue => e
    Trollop::die(e.message)
  end
end