timer

#!/usr/bin/env ruby

/^(?<mins>\d{1,2}):?(?<secs>\d{2})?$/ =~ ARGV.first

module Timer
  def self.tick(mins, secs)
    if mins 
      printf "#{mins} minutes"
      printf ", #{secs} seconds" if secs
      printf "\n"
      s = 0
      max_secs = mins.to_i * 60 + secs.to_i
      num_digits = Math.log10(max_secs).ceil
      # curses stuff
      lines = 1
      cols = num_digits
      while s < max_secs
        puts s
        sleep 1
        print "\x1B[1A\x1B[2K" # move up and clear
        s += 1
      end
    else
      puts "input must be minutes with optional seconds: (e.g. 2:30)"
      exit 1
    end
  end
end

Timer.tick(mins, secs)

SIGS = ["KILL", "TERM"]

SIGS.each do |sig|
  Signal.trap(sig) do 
    exit
  end
end