Module: Saw::Util

Defined in:
lib/saw/util.rb

Class Method Summary collapse

Class Method Details

.time_diff(dt1, dt2) ⇒ Object 



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# File 'lib/saw/util.rb', line 3

def self.time_diff dt1, dt2
  diff = nil
  #diff   = 1 unless dt1 or dt1.kind_of? DateTime
  #diff ||= 1 unless dt2 or dt2.kind_of? DateTime
  diff ||= dt2 - dt1

  return '00:00:00' if diff==1

  str = ''

  hours_diff = (diff/1.hour).round
  if hours_diff > 0
    str << "#{format('%02d', hours_diff)}"
    diff = diff - hours_diff.hours
  else
    str << "00"
  end

  minutes_diff = (diff/1.minute).round
  if minutes_diff > 0
    str << ":#{format('%02d', minutes_diff)}"
    diff = diff - minutes_diff.minutes
  else
    str << ":00"
  end

  seconds_diff = (diff/1.second).round
  if seconds_diff > 0
    str << ":#{format('%02d', seconds_diff)}"
    #diff = diff - seconds_diff.seconds
  else
    str << ":00"
  end

  str
end