worklog from git

worklog.rb

#!/usr/bin/env ruby

require 'date'

data = `git log --shortstat --no-merges`
logs = data.split("commit ")

class Hash
  def self.recursive
    new { |hash, key| hash[key] = recursive }
  end
end

edits = Hash.recursive

logs.each do |log|
  next if log.strip == ''
  l = log.split("\n")
  commit = l.shift
  author = l.shift.to_s.split("Author: ")[1].strip[0..5]
  date = l.shift.to_s.split("Date: ")[1].to_s.strip
  d = Date.parse(date)
   
  im = log.match(/ (\d+) insertions/)
  dm = log.match(/ (\d+) deletions/)
  if im.nil?
    ins = 0
  else
    ins = im[1].to_i
  end
  
  if dm.nil?
    del = 0
  else
    del = dm[1].to_i
  end

  if edits[d.to_s][author] == {}
    edits[d.to_s][author] = {cmt: 0, ins: 0, del: 0}
  end
  edits[d.to_s][author][:cmt] += 1
  edits[d.to_s][author][:ins] += ins
  edits[d.to_s][author][:del] += del
  
end

ret = []
edits.each_pair do |k, v|
  ret << "#{Date.parse(k).strftime('%a')} #{k} #{v}"
end
puts ret.reverse.join("\n")