ifad/eaco

module Eaco
  module Rake

    ##
    # Assorted utilities.
    #
    module Utils
      extend self

      ##
      # Captures the stdout emitted by the given +block+
      #
      # @param block [Proc]
      # @return [String] the captured output
      #
      def capture_stdout(&block)
        stdout, string = $stdout, StringIO.new
        $stdout = string

        yield

        string.tap(&:rewind).read
      ensure
        $stdout = stdout
      end

      ##
      # @return [String] the current gemfile name
      #
      def gemfile
        gemfile = ENV['BUNDLE_GEMFILE']

        File.basename(gemfile, '.*') if gemfile
      end
    end

  end
end