Disable cop in line comment

disable_cop_inline.rb

# Usage:
# bundle exec rubocop --only #{cop} --format json | ruby disable_cop_inline.rb
#
require 'json'
require 'tempfile'
require 'fileutils'

result = JSON.parse($stdin.read)
result['files'].each do |res|
  next if res['offenses'].empty?
  cops_by_line = res['offenses'].group_by do |o|
    o['location']['start_line']
  end
  temp = Tempfile.open do |tf|
    File.open(res['path']) do |f|
      f.each_line.with_index(1) do |line, i|
        if (cops = cops_by_line[i])
          cop_names = cops.map { |cop| cop['cop_name'] }
          line = line.chomp + " # rubocop:todo #{cop_names.uniq.join(', ')}"
        end
        tf.puts line
      end
    end
    tf
  end
  FileUtils.mv(temp.path, res['path'])
end