class Array

# File lib/progbar.rb, line 2
def prog_each(&block) 
  bar_length = (`tput cols` || 80).to_i - 30
  time_now = Time.now
  total = self.count
  last_flush = 0
  flush_time = 1
  self.each_with_index{|element, x|
    cur = (x+1) * 100 / total
    time_left = (((Time.now - time_now) * (100 - cur)).to_f / cur).ceil
    if (Time.now - last_flush).to_i >= flush_time or time_left < 1
      time_left_graceful = Time.at(time_left).utc.strftime("%H:%M:%S")
      if time_left > 86400
        time_left_graceful = res.split(":")
        time_left_graceful[0] = (time_left_graceful[0].to_i + days * 24).to_s
        time_left_graceful = time_left_graceful.join(":")
      end
      print "\r"
      cur_len = (bar_length * (x + 1)) / total
      print "[" << (["#"] * cur_len).join << (["-"] * (bar_length - cur_len)).join << "] #{cur}% [#{time_left_graceful} left]"
      last_flush = Time.now
    end
    block.call element if block
  }
  puts "\n"
  "Done."
end