find hours left in sow.txt file

sow_totalhours.rb

# a very inelegant script to find the total number of hours in the scope of work file
# by tlehman 

# get the lines from the sow file
file = File.open('sow.txt')
lines = file.readlines
file.close

# join list of strings and regex out the hours, then turn those strings into ints
hours_list = lines.join.scan(/(\d+) hours/i).map {|hs| hs.first.to_i}
# sum up the list of hours
total_hours = hours_list.reduce(:+)

puts "#{total_hours} hours total"

# find the number of hours in the scope of work file that have not been done
lines_not_done = lines.select { |line| not (line =~ /DONE/) }
hours_left = lines_not_done.join.scan(/(\d+) hours/).map {|hs| hs.first.to_i}
total_hours_left = hours_left.reduce(:+)

puts "#{total_hours_left} hours left"