livecheck: progress bar for JSON output

Co-authored-by: Sam Ford <1584702+samford@users.noreply.github.com>
Co-authored-by: Dustin Rodrigues <dust.rod@gmail.com>

.gitignore

@@ -130,7 +130,6 @@
 **/vendor/bundle/ruby/*/gems/rubocop-0*/
 **/vendor/bundle/ruby/*/gems/rubocop-ast-*/
 **/vendor/bundle/ruby/*/gems/ruby-prof-*/
-**/vendor/bundle/ruby/*/gems/ruby-progressbar-*/
 **/vendor/bundle/ruby/*/gems/simplecov-*/
 **/vendor/bundle/ruby/*/gems/simplecov-html-*/
 **/vendor/bundle/ruby/*/gems/sorbet-*/

Library/Homebrew/dev-cmd/livecheck.rb

@@ -26,15 +26,17 @@ module Homebrew
       switch "--full-name",
              description: "Print formulae with fully-qualified names."
       flag   "--tap=",
-             description: "Check the formulae within the given tap, specified as <user>`/`<repo>."
-      switch "--installed",
-             description: "Check formulae that are currently installed."
-      switch "--json",
-             description: "Output informations in JSON format."
+             description: "Check formulae within the given tap, specified as <user>`/`<repo>."
       switch "--all",
              description: "Check all available formulae."
+      switch "--installed",
+             description: "Check formulae that are currently installed."
       switch "--newer-only",
              description: "Show the latest version only if it's newer than the formula."
+      switch "--json",
+             description: "Output information in JSON format."
+      switch "-q", "--quiet",
+             description: "Suppress warnings, don't print a progress bar for JSON output."
       conflicts "--debug", "--json"
       conflicts "--tap=", "--all", "--installed"
     end

Library/Homebrew/livecheck/livecheck.rb

 # frozen_string_literal: true
 
 require "livecheck/strategy"
+require "ruby-progressbar"
 
 module Homebrew
   # The `Livecheck` module consists of methods used by the `brew livecheck`
@@ -66,6 +67,24 @@ module Homebrew
       @livecheck_strategy_names.freeze
 
       has_a_newer_upstream_version = false
+
+      if args.json? && !args.quiet? && $stderr.tty?
+        total_formulae = if formulae_to_check == Formula
+          formulae_to_check.count
+        else
+          formulae_to_check.length
+        end
+
+        $stderr.puts Formatter.headline("Running checks", color: :blue)
+        progress = ProgressBar.create(
+          total:          total_formulae,
+          progress_mark:  "#",
+          remainder_mark: ".",
+          format:         " %t: [%B] %c/%C ",
+          output:         $stderr,
+        )
+      end
+
       formulae_checked = formulae_to_check.sort.map.with_index do |formula, i|
         if args.debug? && i.positive?
           puts <<~EOS
@@ -78,7 +97,7 @@ module Homebrew
         skip_result = skip_conditions(formula, args: args)
         next skip_result if skip_result != false
 
-        formula.head.downloader.shutup! if formula.head?
+        formula.head&.downloader&.shutup!
 
         current = if formula.head?
           formula.any_installed_version.version.commit
@@ -136,6 +155,7 @@ module Homebrew
         has_a_newer_upstream_version ||= true
 
         if args.json?
+          progress&.increment
           info.except!(:meta) unless args.verbose?
           next info
         end
@@ -146,6 +166,7 @@ module Homebrew
         Homebrew.failed = true
 
         if args.json?
+          progress&.increment
           status_hash(formula, "error", [e.to_s], args: args)
         elsif !args.quiet?
           onoe "#{Tty.blue}#{formula_name(formula, args: args)}#{Tty.reset}: #{e}"
@@ -157,7 +178,14 @@ module Homebrew
         puts "No newer upstream versions."
       end
 
-      puts JSON.generate(formulae_checked.compact) if args.json?
+      return unless args.json?
+
+      if progress
+        progress.finish
+        $stderr.print "#{Tty.up}#{Tty.erase_line}" * 2
+      end
+
+      puts JSON.generate(formulae_checked.compact)
     end
 
     # Returns the fully-qualified name of a formula if the full_name argument is

Library/Homebrew/utils/tty.rb

@@ -53,6 +53,15 @@ module Tty
     no_underline:  24,
   }.freeze
 
+  SPECIAL_CODES = {
+    up:         "1A",
+    down:       "1B",
+    right:      "1C",
+    left:       "1D",
+    erase_line: "K",
+    erase_char: "P",
+  }.freeze
+
   CODES = COLOR_CODES.merge(STYLE_CODES).freeze
 
   def append_to_escape_sequence(code)
@@ -77,6 +86,16 @@ module Tty
     end
   end
 
+  SPECIAL_CODES.each do |name, code|
+    define_singleton_method(name) do
+      if $stdout.tty?
+        "\033[#{code}"
+      else
+        ""
+      end
+    end
+  end
+
   def to_s
     return "" unless color?
 

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar.rb

+# frozen_string_literal: true
+
+require 'ruby-progressbar/output'
+require 'ruby-progressbar/outputs/tty'
+require 'ruby-progressbar/outputs/non_tty'
+require 'ruby-progressbar/timer'
+require 'ruby-progressbar/progress'
+require 'ruby-progressbar/throttle'
+require 'ruby-progressbar/calculators/length'
+require 'ruby-progressbar/calculators/running_average'
+require 'ruby-progressbar/components'
+require 'ruby-progressbar/format'
+require 'ruby-progressbar/base'
+require 'ruby-progressbar/refinements' if Module.
+                                         private_instance_methods.
+                                         include?(:using)
+
+class ProgressBar
+  def self.create(*args)
+    ProgressBar::Base.new(*args)
+  end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/base.rb

+require 'forwardable'
+
+class   ProgressBar
+class   Base
+  extend Forwardable
+
+  def_delegators :output,
+                 :clear,
+                 :log,
+                 :refresh
+
+  def_delegators :progressable,
+                 :progress,
+                 :total
+
+  def initialize(options = {})
+    self.autostart    = options.fetch(:autostart,  true)
+    self.autofinish   = options.fetch(:autofinish, true)
+    self.finished     = false
+
+    self.timer        = Timer.new(options)
+    self.progressable = Progress.new(options)
+
+    options           = options.merge(:timer    => timer,
+                                      :progress => progressable)
+
+    self.title_comp   = Components::Title.new(options)
+    self.bar          = Components::Bar.new(options)
+    self.percentage   = Components::Percentage.new(options)
+    self.rate         = Components::Rate.new(options)
+    self.time         = Components::Time.new(options)
+
+    self.output       = Output.detect(options.merge(:bar => self))
+    @format           = Format::String.new(output.resolve_format(options[:format]))
+
+    start :at => options[:starting_at] if autostart
+  end
+
+  def start(options = {})
+    timer.start
+    update_progress(:start, options)
+  end
+
+  def finish
+    return if finished?
+
+    output.with_refresh do
+      self.finished = true
+      progressable.finish
+      timer.stop
+    end
+  end
+
+  def pause
+    output.with_refresh { timer.pause } unless paused?
+  end
+
+  def stop
+    output.with_refresh { timer.stop } unless stopped?
+  end
+
+  def resume
+    output.with_refresh { timer.resume } if stopped?
+  end
+
+  def reset
+    output.with_refresh do
+      self.finished = false
+      progressable.reset
+      timer.reset
+    end
+  end
+
+  def stopped?
+    timer.stopped? || finished?
+  end
+
+  alias paused? stopped?
+
+  def finished?
+    finished || (autofinish && progressable.finished?)
+  end
+
+  def started?
+    timer.started?
+  end
+
+  def decrement
+    update_progress(:decrement)
+  end
+
+  def increment
+    update_progress(:increment)
+  end
+
+  def progress=(new_progress)
+    update_progress(:progress=, new_progress)
+  end
+
+  def total=(new_total)
+    update_progress(:total=, new_total)
+  end
+
+  def progress_mark=(mark)
+    output.refresh_with_format_change { bar.progress_mark = mark }
+  end
+
+  def remainder_mark=(mark)
+    output.refresh_with_format_change { bar.remainder_mark = mark }
+  end
+
+  def title
+    title_comp.title
+  end
+
+  def title=(title)
+    output.refresh_with_format_change { title_comp.title = title }
+  end
+
+  def to_s(new_format = nil)
+    self.format = new_format if new_format
+
+    Format::Formatter.process(@format, output.length, self)
+  end
+
+  # rubocop:disable Metrics/AbcSize, Metrics/LineLength
+  def to_h
+    {
+      'output_stream'                       => output.__send__(:stream),
+      'length'                              => output.length,
+      'title'                               => title_comp.title,
+      'progress_mark'                       => bar.progress_mark,
+      'remainder_mark'                      => bar.remainder_mark,
+      'progress'                            => progressable.progress,
+      'total'                               => progressable.total,
+      'percentage'                          => progressable.percentage_completed_with_precision.to_f,
+      'elapsed_time_in_seconds'             => time.__send__(:timer).elapsed_seconds,
+      'estimated_time_remaining_in_seconds' => time.__send__(:estimated_seconds_remaining),
+      'base_rate_of_change'                 => rate.__send__(:base_rate),
+      'scaled_rate_of_change'               => rate.__send__(:scaled_rate),
+      'unknown_progress_animation_steps'    => bar.upa_steps,
+      'throttle_rate'                       => output.__send__(:throttle).rate,
+      'started?'                            => started?,
+      'stopped?'                            => stopped?,
+      'finished?'                           => finished?
+    }
+  end
+  # rubocop:enable Metrics/AbcSize, Metrics/LineLength
+
+  def inspect
+    "#<ProgressBar:#{progress}/#{total || 'unknown'}>"
+  end
+
+  def format=(other)
+    output.refresh_with_format_change do
+      @format = Format::String.new(other || output.default_format)
+    end
+  end
+
+  alias format format=
+
+  protected
+
+  attr_accessor :output,
+                :timer,
+                :progressable,
+                :title_comp,
+                :bar,
+                :percentage,
+                :rate,
+                :time,
+                :autostart,
+                :autofinish,
+                :finished
+
+  def update_progress(*args)
+    output.with_refresh do
+      progressable.__send__(*args)
+      timer.stop if finished?
+    end
+  end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/calculators/length.rb

+class   ProgressBar
+module  Calculators
+class   Length
+  attr_reader   :length_override
+  attr_accessor :current_length,
+                :output
+
+  def initialize(options = {})
+    self.length_override = options[:length]
+    self.output          = options[:output]
+    self.current_length  = nil
+  end
+
+  def length
+    current_length || reset_length
+  end
+
+  def length_changed?
+    previous_length     = current_length
+    self.current_length = calculate_length
+
+    previous_length != current_length
+  end
+
+  def calculate_length
+    length_override || terminal_width || 80
+  end
+
+  def reset_length
+    self.current_length = calculate_length
+  end
+
+  def length_override=(other)
+    @length_override ||= ENV['RUBY_PROGRESS_BAR_LENGTH'] || other
+    @length_override = @length_override.to_i if @length_override
+  end
+
+  private
+
+  # This code was copied and modified from Rake, available under MIT-LICENSE
+  # Copyright (c) 2003, 2004 Jim Weirich
+  # rubocop:disable Style/RescueStandardError
+  def terminal_width
+    return 80 unless unix?
+
+    result = dynamic_width
+    (result < 20) ? 80 : result
+  rescue
+    80
+  end
+  # rubocop:enable Style/RescueStandardError
+
+  # rubocop:disable Lint/DuplicateMethods
+  begin
+    require 'io/console'
+
+    def dynamic_width
+      if output && output.tty? && output.respond_to?(:winsize)
+        dynamic_width_via_output_stream_object
+      elsif IO.console
+        dynamic_width_via_io_object
+      else
+        dynamic_width_via_system_calls
+      end
+    end
+  rescue LoadError
+    def dynamic_width
+      dynamic_width_via_system_calls
+    end
+  end
+  # rubocop:enable Lint/DuplicateMethods
+
+  def dynamic_width_via_output_stream_object
+    _rows, columns = output.winsize
+    columns
+  end
+
+  def dynamic_width_via_io_object
+    _rows, columns = IO.console.winsize
+    columns
+  end
+
+  def dynamic_width_via_system_calls
+    dynamic_width_stty.nonzero? || dynamic_width_tput
+  end
+
+  def dynamic_width_stty
+    `stty size 2>/dev/null`.split[1].to_i
+  end
+
+  def dynamic_width_tput
+    `tput cols 2>/dev/null`.to_i
+  end
+
+  def unix?
+    RUBY_PLATFORM =~ /(aix|darwin|linux|(net|free|open)bsd|cygwin|solaris|irix|hpux)/i
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/calculators/running_average.rb

+class   ProgressBar
+module  Calculators
+class   RunningAverage
+  def self.calculate(current_average, new_value_to_average, smoothing_factor)
+    new_value_to_average * (1.0 - smoothing_factor) + current_average * smoothing_factor
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/components.rb

+require 'ruby-progressbar/components/bar'
+require 'ruby-progressbar/components/percentage'
+require 'ruby-progressbar/components/rate'
+require 'ruby-progressbar/components/time'
+require 'ruby-progressbar/components/title'

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/components/bar.rb

+###
+# UPA = Unknown Progress Animation
+#
+class   ProgressBar
+module  Components
+class   Bar
+  DEFAULT_PROGRESS_MARK  = '='.freeze
+  DEFAULT_REMAINDER_MARK = ' '.freeze
+  DEFAULT_UPA_STEPS      = ['=---', '-=--', '--=-', '---='].freeze
+
+  attr_accessor :progress_mark,
+                :remainder_mark,
+                :length,
+                :progress,
+                :upa_steps
+
+  def initialize(options = {})
+    self.upa_steps      = options[:unknown_progress_animation_steps] || DEFAULT_UPA_STEPS
+    self.progress_mark  = options[:progress_mark]  || DEFAULT_PROGRESS_MARK
+    self.remainder_mark = options[:remainder_mark] || DEFAULT_REMAINDER_MARK
+    self.progress       = options[:progress]
+    self.length         = options[:length]
+  end
+
+  def to_s(options = { :format => :standard })
+    if progress.unknown?
+      unknown_string
+    elsif options[:format] == :standard
+      "#{standard_complete_string}#{incomplete_string}"
+    elsif options[:format] == :integrated_percentage
+      "#{integrated_percentage_complete_string}#{incomplete_string}"
+    end
+  end
+
+  private
+
+  def integrated_percentage_complete_string
+    return standard_complete_string if completed_length < 5
+
+    " #{progress.percentage_completed} ".to_s.center(completed_length, progress_mark)
+  end
+
+  def standard_complete_string
+    progress_mark * completed_length
+  end
+
+  def incomplete_string
+    remainder_mark * (length - completed_length)
+  end
+
+  def bar(length)
+    self.length = length
+
+    standard_complete_string
+  end
+
+  def complete_bar(length)
+    self.length = length
+
+    to_s(:format => :standard)
+  end
+
+  def complete_bar_with_percentage(length)
+    self.length = length
+
+    to_s(:format => :integrated_percentage)
+  end
+
+  def unknown_string
+    unknown_frame_string = unknown_progress_frame * ((length / upa_steps.size) + 2)
+
+    unknown_frame_string[0, length]
+  end
+
+  def incomplete_space(length)
+    self.length = length
+
+    if progress.unknown?
+      unknown_string
+    else
+      incomplete_string
+    end
+  end
+
+  def bar_with_percentage(length)
+    self.length = length
+
+    integrated_percentage_complete_string
+  end
+
+  def completed_length
+    (length * progress.percentage_completed / 100).floor
+  end
+
+  def unknown_progress_frame
+    current_animation_step = progress.progress % upa_steps.size
+
+    upa_steps[current_animation_step]
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/components/percentage.rb

+class   ProgressBar
+module  Components
+class   Percentage
+  attr_accessor :progress
+
+  def initialize(options = {})
+    self.progress = options[:progress]
+  end
+
+  private
+
+  def percentage
+    progress.percentage_completed
+  end
+
+  def justified_percentage
+    progress.percentage_completed.to_s.rjust(3)
+  end
+
+  def percentage_with_precision
+    progress.percentage_completed_with_precision
+  end
+
+  def justified_percentage_with_precision
+    progress.percentage_completed_with_precision.to_s.rjust(6)
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/components/rate.rb

+class   ProgressBar
+module  Components
+class   Rate
+  attr_accessor :rate_scale,
+                :started_at,
+                :stopped_at,
+                :timer,
+                :progress
+
+  def initialize(options = {})
+    self.rate_scale = options[:rate_scale] || lambda { |x| x }
+    self.started_at = nil
+    self.stopped_at = nil
+    self.timer      = options[:timer]
+    self.progress   = options[:progress]
+  end
+
+  private
+
+  def rate_of_change(format_string = '%i')
+    return 0 unless elapsed_seconds > 0
+
+    format_string % scaled_rate
+  end
+
+  def rate_of_change_with_precision
+    rate_of_change('%.2f')
+  end
+
+  def scaled_rate
+    rate_scale.call(base_rate)
+  end
+
+  def base_rate
+    progress.absolute / elapsed_seconds
+  end
+
+  def elapsed_seconds
+    timer.elapsed_whole_seconds.to_f
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/components/time.rb

+###
+# OOB = 'Out of Bounds'
+#
+class   ProgressBar
+module  Components
+class   Time
+  TIME_FORMAT            = '%02d:%02d:%02d'.freeze
+  OOB_TIME_FORMATS       = [:unknown, :friendly, nil].freeze
+  OOB_LIMIT_IN_HOURS     = 99
+  OOB_UNKNOWN_TIME_TEXT  = '??:??:??'.freeze
+  OOB_FRIENDLY_TIME_TEXT = '> 4 Days'.freeze
+  NO_TIME_ELAPSED_TEXT   = '--:--:--'.freeze
+  ESTIMATED_LABEL        = ' ETA'.freeze
+  ELAPSED_LABEL          = 'Time'.freeze
+
+  def initialize(options = {})
+    self.out_of_bounds_time_format = options[:out_of_bounds_time_format]
+    self.timer                     = options[:timer]
+    self.progress                  = options[:progress]
+  end
+
+  def estimated_with_label
+    "#{ESTIMATED_LABEL}: #{estimated}"
+  end
+
+  def elapsed_with_label
+    "#{ELAPSED_LABEL}: #{elapsed}"
+  end
+
+  protected
+
+  def estimated_with_no_oob
+    self.out_of_bounds_time_format = nil
+
+    estimated_with_elapsed_fallback
+  end
+
+  def estimated_with_unknown_oob
+    self.out_of_bounds_time_format = :unknown
+
+    estimated_with_elapsed_fallback
+  end
+
+  def estimated_with_friendly_oob
+    self.out_of_bounds_time_format = :friendly
+
+    estimated_with_elapsed_fallback
+  end
+
+  attr_reader   :out_of_bounds_time_format
+  attr_accessor :timer,
+                :progress
+
+  def out_of_bounds_time_format=(format)
+    unless OOB_TIME_FORMATS.include? format
+      fail 'Invalid Out Of Bounds time format.  Valid formats are ' +
+        OOB_TIME_FORMATS.inspect
+    end
+
+    @out_of_bounds_time_format = format
+  end
+
+  private
+
+  def estimated
+    memo_estimated_seconds_remaining = estimated_seconds_remaining
+
+    return OOB_UNKNOWN_TIME_TEXT unless memo_estimated_seconds_remaining
+
+    hours, minutes, seconds = timer.divide_seconds(memo_estimated_seconds_remaining)
+
+    if hours > OOB_LIMIT_IN_HOURS && out_of_bounds_time_format
+      out_of_bounds_time
+    else
+      TIME_FORMAT % [hours, minutes, seconds]
+    end
+  end
+
+  def elapsed
+    return NO_TIME_ELAPSED_TEXT unless timer.started?
+
+    hours, minutes, seconds = timer.divide_seconds(timer.elapsed_whole_seconds)
+
+    TIME_FORMAT % [hours, minutes, seconds]
+  end
+
+  def estimated_with_elapsed_fallback
+    progress.finished? ? elapsed_with_label : estimated_with_label
+  end
+
+  def estimated_seconds_remaining
+    return if progress.unknown? || progress.none? || timer.stopped?
+
+    (timer.elapsed_seconds * (progress.total / progress.running_average - 1)).round
+  end
+
+  def out_of_bounds_time
+    case out_of_bounds_time_format
+    when :unknown
+      OOB_UNKNOWN_TIME_TEXT
+    when :friendly
+      OOB_FRIENDLY_TIME_TEXT
+    end
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/components/title.rb

+class   ProgressBar
+module  Components
+class   Title
+  DEFAULT_TITLE = 'Progress'.freeze
+
+  attr_accessor :title
+
+  def initialize(options = {})
+    self.title = options[:title] || DEFAULT_TITLE
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/errors/invalid_progress_error.rb

+class   ProgressBar
+class   InvalidProgressError < RuntimeError
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/format.rb

+require 'ruby-progressbar/format/molecule'
+require 'ruby-progressbar/format/formatter'
+require 'ruby-progressbar/format/string'

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/format/formatter.rb

+class   ProgressBar
+module  Format
+class   Formatter
+  def self.process(format_string, max_length, bar)
+    processed_string = format_string.dup
+
+    format_string.non_bar_molecules.each do |molecule|
+      processed_string.gsub!(molecule.full_key, molecule.lookup_value(bar, nil))
+    end
+
+    processed_string.gsub!(/%%/, '%')
+
+    bar_length         = max_length -
+                         processed_string.displayable_length +
+                         format_string.bar_molecule_placeholder_length
+    bar_length         = (bar_length < 0) ? 0 : bar_length
+
+    format_string.bar_molecules.each do |molecule|
+      processed_string.gsub!(molecule.full_key,
+                             molecule.lookup_value(bar, bar_length))
+    end
+
+    processed_string
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/format/molecule.rb

+class   ProgressBar
+module  Format
+class   Molecule
+  MOLECULES = {
+    :t => [:title_comp,   :title],
+    :T => [:title_comp,   :title],
+    :c => [:progressable, :progress],
+    :C => [:progressable, :total],
+    :u => [:progressable, :total_with_unknown_indicator],
+    :p => [:percentage,   :percentage],
+    :P => [:percentage,   :percentage_with_precision],
+    :j => [:percentage,   :justified_percentage],
+    :J => [:percentage,   :justified_percentage_with_precision],
+    :a => [:time,         :elapsed_with_label],
+    :e => [:time,         :estimated_with_unknown_oob],
+    :E => [:time,         :estimated_with_friendly_oob],
+    :f => [:time,         :estimated_with_no_oob],
+    :B => [:bar,          :complete_bar],
+    :b => [:bar,          :bar],
+    :W => [:bar,          :complete_bar_with_percentage],
+    :w => [:bar,          :bar_with_percentage],
+    :i => [:bar,          :incomplete_space],
+    :r => [:rate,         :rate_of_change],
+    :R => [:rate,         :rate_of_change_with_precision]
+  }.freeze
+
+  BAR_MOLECULES = %w{W w B b i}.freeze
+
+  attr_accessor :key,
+                :method_name
+
+  def initialize(letter)
+    self.key         = letter
+    self.method_name = MOLECULES.fetch(key.to_sym)
+  end
+
+  def bar_molecule?
+    BAR_MOLECULES.include? key
+  end
+
+  def non_bar_molecule?
+    !bar_molecule?
+  end
+
+  def full_key
+    "%#{key}"
+  end
+
+  def lookup_value(environment, length = 0)
+    component = environment.__send__(method_name[0])
+
+    if bar_molecule?
+      component.__send__(method_name[1], length).to_s
+    else
+      component.__send__(method_name[1]).to_s
+    end
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/format/string.rb

+class   ProgressBar
+module  Format
+class   String < ::String
+  MOLECULE_PATTERN = /%[a-zA-Z]/.freeze
+  ANSI_SGR_PATTERN = /\e\[[\d;]+m/.freeze
+
+  def displayable_length
+    gsub(ANSI_SGR_PATTERN, '').length
+  end
+
+  def bar_molecule_placeholder_length
+    @bar_molecule_placeholder_length ||= bar_molecules.size * 2
+  end
+
+  def non_bar_molecules
+    @non_bar_molecules ||= molecules.select(&:non_bar_molecule?)
+  end
+
+  def bar_molecules
+    @bar_molecules ||= molecules.select(&:bar_molecule?)
+  end
+
+  def molecules
+    @molecules ||= begin
+                      molecules = []
+
+                      scan(MOLECULE_PATTERN) do |match|
+                        molecules << Molecule.new(match[1, 1])
+                      end
+
+                      molecules
+                    end
+  end
+end
+end
+end

Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-progressbar-1.10.1/lib/ruby-progressbar/output.rb

+class   ProgressBar
+class   Output
+  DEFAULT_OUTPUT_STREAM = $stdout
+
+  attr_accessor :stream
+
+  def initialize(options = {})
+    self.bar               = options[:bar]
+    self.stream            = options[:output] || DEFAULT_OUTPUT_STREAM
+    self.throttle          = Throttle.new(options)
+    self.length_calculator = Calculators::Length.new(
+                               :length => options[:length],
+                               :output => stream
+                             )
+  end
+
+  def self.detect(options = {})
+    if options[:output].is_a?(Class) && options[:output] <= ProgressBar::Output
+      options[:output].new(options)
+    elsif (options[:output] || DEFAULT_OUTPUT_STREAM).tty?
+      Outputs::Tty.new(options)
+    else
+      Outputs::NonTty.new(options)
+    end
+  end
+
+  def log(string)
+    clear
+    stream.puts string
+
+    refresh(:force => true) unless bar.stopped?
+  end
+
+  def clear_string
+    ' ' * length_calculator.length
+  end
+
+  def length
+    length_calculator.length
+  end
+
+  def with_refresh
+    yield
+    refresh
+  end
+
+  def refresh(options = {})
+    throttle.choke(:force_update_if => (bar.stopped? || options[:force])) do
+      clear if length_calculator.length_changed?
+
+      print_and_flush
+    end
+  end
+
+  protected
+
+  attr_accessor :length_calculator,
+                :throttle,
+                :bar
+
+  private
+
+  def print_and_flush
+    stream.print bar_update_string + eol
+    stream.flush
+  end
+end
+end