print_file

# File lib/rdoc/stats.rb, line 169
    def print_file(files_so_far, filename)
      progress_bar = sprintf("%3d%% [%2d/%2d]  ",
                             100 * (files_so_far + 1) / @total_files,
                             files_so_far + 1,
                             @total_files)

      if $stdout.tty?
        # Print a progress bar, but make sure it fits on a single line. Filename
        # will be truncated if necessary.
        terminal_width = (ENV['COLUMNS'] || 80).to_i
        max_filename_size = terminal_width - progress_bar.size
        if filename.size > max_filename_size
          # Turn "some_long_filename.rb" to "...ong_filename.rb"
          filename = filename[(filename.size - max_filename_size) .. -1]
          filename[0..2] = "..."
        end

        # Pad the line with whitespaces so that leftover output from the
        # previous line doesn't show up.
        line = "#{progress_bar}#{filename}"
        padding = terminal_width - line.size
        line << (" " * padding) if padding > 0

        $stdout.print("#{line}\r")
      else
        $stdout.puts "#{progress_bar} #{filename}"
      end
      $stdout.flush
    end