rubocop.rake

begin
  require 'rubocop/rake_task'

  modified_files = `git diff --name-only`.split(" ").map(&:strip)
  included_files = modified_files.select { |f| f =~ /.*.rb\z/ }

  if included_files.any?
    RuboCop::RakeTask.new do |t|
      t.patterns = included_files
    end
  else
    desc 'Rubocop has no modified files to check'
    task :rubocop do
      puts 'No modified files for robocop to check'
    end
  end

rescue LoadError
  desc 'Rubocop rake task not available (rubocop not installed)'
  task :rubocop do
    abort 'Rubocop rake task is not available.'
  end
end