module Travis::CLI

def command(name)
  const_name = command_name(name)
  constant   = CLI.const_get(const_name) if const_name =~ /^[A-Z][A-Za-z]+$/ and const_defined? const_name
  if command? constant
    constant
  else
    $stderr.puts "unknown command #{name}"
    exit 1
  end
end