Script of regexping how much I worked from journal input

timejournal.rb

#!/usr/bin/ruby
r = /\*\*[\d :\-]+\*\*/
s = $stdin.readlines.join
ms = s.scan r

class Interval
    attr_accessor :time0, :time1

    def initialize(s)
        r = /[*:-]/
        h0,m0,h1,m1 = s.gsub(r, " ").split.map(&:to_i)
        @time0 = (h0*60+m0)
        @time1 = (h1*60+m1)
    end

    def minutes
        @time1-@time0
    end
    def hours
        minutes/60.0
    end

end
def to_time(s)
    r = /[*:-]/
    h0,m0,h1,m1 = s.gsub(r, " ").split.map(&:to_i)
    (h1*60+m1) - (h0*60+m0)
end

f = ->(s) { Interval.new(s) }

ivs = ms.map(&f)
p ivs.map { |iv| iv.hours }.inject(:+)