Class: YourKarma::CLI::ArgumentParser

Inherits:
Object
  • Object
show all
Defined in:
lib/yourkarma/cli.rb

Defined Under Namespace

Classes: InvalidOption

Constant Summary collapse

DEFAULT_OPTIONS = 
{
  verbose: false,
  poll:    true,
  tail:    false
}

Instance Method Summary collapse

Instance Method Details

#parse(arguments) ⇒ Object 



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# File 'lib/yourkarma/cli.rb', line 178

def parse(arguments)
  options = DEFAULT_OPTIONS.dup
  optparse = OptionParser.new do |opts|
    opts.banner = <<-BANNER.gsub(/^\s{4}/, '')
      Karma hotspot status
      Usage: yourkarma [options]
      Example: yourkarma --verbose
    BANNER

    opts.on('-u', '--url=URL', "Karma hotspot URL") do |url|
      options[:url] = url
    end
    opts.on('-t', '--timeout=TIMEOUT', "Time to wait for HTTP response", Float) do |timeout|
      options[:timeout] = timeout
    end
    opts.on('-v', '--[no-]verbose', 'Run verbosely') do |v|
      options[:verbose] = true
    end
    opts.on('-c', '--count=COUNT', 'Poll COUNT times', Integer) do |c|
      options[:iterations] = c
    end
    opts.on('-p', '--[no-]poll', 'Continually poll') do |p|
      options[:poll] = p
      options[:iterations] = 1 unless p
    end
    opts.on('--[no-]tail', 'Tail log') do |t|
      options[:tail] = t
    end
    opts.on('-h', '--help', 'Display this screen') do
      raise InvalidOption, opts
    end
  end

  optparse.parse!(arguments)

  options
rescue OptionParser::InvalidOption, OptionParser::MissingArgument
  raise InvalidOption, optparse
end