Short Ruby script written for the purpose of automating the process of computing the total time worked each week on my archaic paper-based timecard.

timecalc.rb

#!ruby

require 'highline/import'
require 'date'

total_time = nil

begin_time = nil
end_time = nil

while true
  
  begin_time = DateTime.parse '2011-01-01 ' + ask('begining time (HH:MM)') + ':00'
  end_time = DateTime.parse '2011-01-01 ' + ask('end time (HH:MM, 4:00 PM is 16:00)') + ':00'
  
  total_time = total_time + (end_time - begin_time) unless total_time == nil
  total_time = end_time - begin_time if total_time == nil
  
  puts 'Total time is ' + (total_time.to_f * 24.0).to_s

end