Module: Terrestrial::Cli::TerminalUI

Defined in:
lib/terrestrial/cli/terminal_ui.rb

Class Method Summary collapse

Class Method Details

.show_spinner(fps = 10) ⇒ Object 



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# File 'lib/terrestrial/cli/terminal_ui.rb', line 5

def self.(fps = 10)
  chars = %w[| / - \\]
  delay = 1.0/fps
  iter = 0
   = Thread.new do
    while iter do  # Keep spinning until told otherwise
      print chars[(iter+=1) % chars.length]
      sleep delay
      print "\b"
      print " "
      print "\b"
    end
  end
  yield.tap do     # 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.
  end              # Use the block's return value as the method's
end