Class: Strobe::CLI::Ticker

Inherits:
Object
  • Object
show all
Defined in:
lib/strobe/cli/ticker.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Ticker

Returns a new instance of Ticker.



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# File 'lib/strobe/cli/ticker.rb', line 12

def initialize
  @thread
  @read, @write = IO.pipe
end

Class Method Details

.tick(msg, interval = 0.5) ⇒ Object 



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# File 'lib/strobe/cli/ticker.rb', line 3

def self.tick(msg, interval = 0.5)
  ticker = new
  ticker.tick(msg, interval)
  return ticker unless block_given?
  yield
ensure
  ticker.stop
end

Instance Method Details

#stop ⇒ Object 



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# File 'lib/strobe/cli/ticker.rb', line 35

def stop
  raise "Ticker is not ticking" unless @thread

  @write << '1'
  @write.close
  @thread.join
  true
end

#tick(msg, interval = 0.5) ⇒ Object 



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# File 'lib/strobe/cli/ticker.rb', line 17

def tick(msg, interval = 0.5)
  @thread = Thread.new do
    print "#{msg}..."

    while true
      break if IO.select( [ @read ], nil, nil, interval )
      print "."
    end

    @read.read
    @read.close

    puts
  end

  true
end