class Cucumber::Rake::Task::ForkedCucumberRunner

def bundler_gem_available?
  Gem::Specification.find_by_name('bundler')
rescue Gem::LoadError
  false
end

def cmd
  if use_bundler
    [
      Cucumber::RUBY_BINARY, '-S', 'bundle', 'exec', 'cucumber',
      @cucumber_opts, @feature_files
    ].flatten
  else
    [
      Cucumber::RUBY_BINARY, '-I', load_path,
      quoted_binary(@cucumber_bin), @cucumber_opts, @feature_files
    ].flatten
  end
end

def initialize(libs, cucumber_bin, cucumber_opts, bundler, feature_files)
  @libs          = libs
  @cucumber_bin  = cucumber_bin
  @cucumber_opts = cucumber_opts
  @bundler       = bundler
  @feature_files = feature_files
end

def load_path
  [format('"%<path>s"', path: @libs.join(File::PATH_SEPARATOR))]
end

def quoted_binary(cucumber_bin)
  [format('"%<path>s"', path: cucumber_bin)]
end

def run
  sh cmd.join(' ') do |ok, res|
    exit res.exitstatus unless ok
  end
end

def use_bundler
  @bundler.nil? ? File.exist?('./Gemfile') && bundler_gem_available? : @bundler
end