Class: WDD::Utils::Spinner

Inherits:
Object show all
Defined in:
lib/wdd-ruby-ext/utils/spinner.rb

Instance Method Summary collapse

Constructor Details

#initialize(max_iterations, job = "Working", refresh_iterations = 100, display_iterations = 10) ⇒ Spinner

refresh_iterations is how many iterations to wait betwee recalculating the velocity display_iterations is how many iterations to wait between display updates



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# File 'lib/wdd-ruby-ext/utils/spinner.rb', line 24

def initialize max_iterations, job="Working", refresh_iterations=100, display_iterations=10
  $stdout.sync = true
  @max_iterations = max_iterations
  @job = job
  @i = 0
  @spinner_index = 0
  @delta_count = 0
  @start_time = Time.now
  @eta_string = ""
  @average = 0.0
  @refresh_iterations = refresh_iterations
  @display_iterations = display_iterations
end

Instance Method Details

#update ⇒ Object 



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# File 'lib/wdd-ruby-ext/utils/spinner.rb', line 38

def update
  @i += 1
  @delta_count += 1
  fraction = (@i.to_f/@max_iterations)
  if @i % @refresh_iterations == 0
    now = Time.now
    delta_time = now-@start_time
    time_per_iteration = delta_time.to_f / @delta_count
    x = (@max_iterations-@i) * time_per_iteration
    @eta_string = "#{(x.to_i/60).to_i} mins #{x.to_i%60} secs    "
    @delta_count=0
    @start_time = Time.now
    @average = @refresh_iterations.to_f / delta_time
  end
  if @i % @display_iterations == 0 || @i == @max_iterations
    printf("\r#{@job}: %s %3.2f%s (#{@i}/#{@max_iterations})  AVG: %3.2f/s  Time Left: %s",,(fraction)*100,"%",@average, @eta_string)
    @spinner_index += 1
  end
end