git-contributions.rb

#!/usr/bin/env ruby

repos = %w(
  dotfiles
)

authors = %w(
  kechol
)

options = "--no-merges --ignore-space-change"
period  = "1.month"

authors.each do |author|
  f, i, d = 0, 0, 0

  repos.each do |repo|
    # Log format:
    # aaabbbccc This is a commit message.
    #  1 file changed, 2 insertions(+), 1 deletion(-)
    log = `cd #{repo}; git log --shortstat --oneline --author=#{author} --since=#{period} #{options}`

    log.lines.each do |log|
      next unless log[0] == " "
      f += log.scan(/\d+ file/).join.to_i
      i += log.scan(/\d+ insertion/).join.to_i
      d += log.scan(/\d+ deletion/).join.to_i
    end
  end

  puts [author, f, i, d].join(",")
end