cloc stats per directory

cloc-per-directory.rb

require 'csv'
require 'json'

# Generate stats.csv with `cloc`:
#
#    cloc --csv --by-file --report-file stats.csv .

# CSV row:
# language,filename,blank,comment,code,version

csv = CSV.new(File.read('stats.csv')).read

stats = csv.reduce({}) do |acc, row|
  next acc if row[1] == nil

  lang = row[0]
  folder = row[1].split('/')[1]

  next acc unless File.directory?(folder)

  acc[folder] ||= {}
  acc[folder][lang] ||= 0
  acc[folder][lang] += row[4].to_i

  acc
end

puts JSON.generate(stats)