class RuboCop::Formatter::FuubarStyleFormatter

github.com/jeffkreeftmeijer/fuubar<br>This is inspired by the Fuubar formatter for RSpec by Jeff Kreeftmeijer.
soon as they are detected.
This formatter displays a progress bar and shows details of offenses as

def count_stats(offenses) 

def count_stats(offenses)
  super
  offenses = offenses.reject(&:corrected?)
  return if offenses.empty?
  offenses << @severest_offense if @severest_offense
  @severest_offense = offenses.max_by(&:severity)
end

def file_finished(file, offenses) 

def file_finished(file, offenses)
  count_stats(offenses)
  unless offenses.empty?
    @progressbar.clear
    report_file(file, offenses)
  end
  with_color { @progressbar.increment }
end

def initialize(*) 

def initialize(*)
  @severest_offense = nil
  super
end

def progressbar_color 

def progressbar_color
  if @severest_offense
    COLOR_FOR_SEVERITY[@severest_offense.severity.name]
  else
    :green
  end
end

def started(target_files) 

def started(target_files)
  super
  @severest_offense = nil
  file_phrase = target_files.count == 1 ? 'file' : 'files'
  # 185/407 files |====== 45 ======>                    |  ETA: 00:00:04
  # %c / %C       |       %w       >         %i         |       %e
  bar_format = " %c/%C #{file_phrase} |%w>%i| %e "
  @progressbar = ProgressBar.create(
    output: output,
    total: target_files.count,
    format: bar_format,
    autostart: false
  )
  with_color { @progressbar.start }
end

def with_color 

def with_color
  if rainbow.enabled
    output.write colorize('', progressbar_color).chomp(RESET_SEQUENCE)
    yield
    output.write RESET_SEQUENCE
  else
    yield
  end
end