Module: Locomotive::Wagon::SpinnerConcern

Included in:
PullCommand, PushCommand, SyncCommand
Defined in:
lib/locomotive/wagon/commands/concerns/spinner_concern.rb

Instance Method Summary collapse

Instance Method Details

#show_wait_spinner(sentence = nil, fps = 10) ⇒ Object

stackoverflow.com/questions/10262235/printing-an-ascii-spinning-cursor-in-the-console



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# File 'lib/locomotive/wagon/commands/concerns/spinner_concern.rb', line 6

def (sentence = nil, fps = 10)
  chars = %w[| / - \\]
  delay = 1.0/fps
  iter  = 0

   = Thread.new do
    print sentence if sentence

    while iter do  # Keep spinning until told otherwise
      print chars[(iter += 1) % chars.length]
      sleep delay
      print "\b"
    end
  end

  yield.tap {       # After yielding to the block, save the return value
    iter = false   # Tell the thread to exit, cleaning up after itself…
    .join   # …and wait for it to do so.
  }                # Use the block's return value as the method's
end