Class: TreasureData::Command::SizeBasedDownloadProgressIndicator

Inherits:
DownloadProgressIndicator show all
Defined in:
lib/td/command/common.rb

Instance Method Summary collapse

Constructor Details

#initialize(msg, size, perc_step = 1, min_periodicity = nil) ⇒ SizeBasedDownloadProgressIndicator

Returns a new instance of SizeBasedDownloadProgressIndicator.



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# File 'lib/td/command/common.rb', line 361

def initialize(msg, size, perc_step = 1, min_periodicity = nil)
  @size = size

  # perc_step is how small a percentage increment can be shown
  @perc_step = perc_step

  # min_periodicity=X limits updates to one every X second
  @start_time = Time.now.to_i
  @min_periodicity = min_periodicity

  # track progress
  @last_perc_step = 0
  @last_time = @start_time

  super(msg)
end

Instance Method Details

#finish ⇒ Object 



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# File 'lib/td/command/common.rb', line 399

def finish
  print "\r#{@base_msg}...done" + " " * 20
end

#update(curr_size) ⇒ Object 



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# File 'lib/td/command/common.rb', line 378

def update(curr_size)
  if @size.nil? || @size == 0
    msg = "\r#{@base_msg}: #{Command.humanize_bytesize(curr_size)}"
    print msg
    true
  else
    ratio = (curr_size.to_f * 100 / @size).round(1)
    if ratio >= (@last_perc_step + @perc_step) &&
       (!@min_periodicity || (time = Time.now.to_i) - @last_time >= @min_periodicity)
      msg = "\r#{@base_msg}: #{Command.humanize_bytesize(curr_size)} / #{ratio}%"
      print "\r" + " " * (msg.length + 10)
      print msg
      @last_perc_step = ratio
      @last_time = time
      true
    else
      false
    end
  end
end