Class: WifiWand::Main

Inherits:
Object
  • Object
show all
Defined in:
lib/wifi-wand/main.rb

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 



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# File 'lib/wifi-wand/main.rb', line 61

def call
  options = parse_command_line

  begin
    WifiWand::CommandLineInterface.new(options).call
  rescue => e
    puts "Error: #{e.backtrace.join("\n")}\n\n#{e.message}"
  end
end

#parse_command_line ⇒ Object

Parses the command line with Ruby’s internal ‘optparse’. optparse removes what it processes from ARGV, which simplifies our command parsing.



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# File 'lib/wifi-wand/main.rb', line 15

def parse_command_line
  options = OpenStruct.new

  OptionParser.new do |parser|
    parser.on("-v", "--[no-]verbose", "Run verbosely") do |v|
      options.verbose = v
    end

    parser.on("-s", "--shell", "Start interactive shell") do |v|
      options.interactive_mode = true
    end

    parser.on("-o", "--output_format FORMAT", "Format output data") do |v|

      formatters = {
          'i' => ->(object) { object.inspect },
          'j' => ->(object) { object.to_json },
          'k' => ->(object) { JSON.pretty_generate(object) },
          'p' => ->(object) { sio = StringIO.new; sio.puts(object); sio.string },
          'y' => ->(object) { object.to_yaml }
      }

      choice = v[0].downcase

      unless formatters.keys.include?(choice)
        message = %Q{Output format "#{choice}" not in list of available formats} <<
            " (#{formatters.keys})."
        puts; puts message; puts
        raise Error.new(message)
      end

      options.post_processor = formatters[choice]
    end

    parser.on("-p", "--wifi-interface interface", "WiFi interface name") do |v|
      options.wifi_interface = v
    end

    parser.on("-h", "--help", "Show help") do |_help_requested|
      ARGV << 'h' # pass on the request to the command processor
    end
  end.parse!
  options
end