class RDoc::Stats::Normal

def begin_adding # :nodoc:
  puts "Parsing sources..."
  @last_width = 0
end

def done_adding # :nodoc:
  puts
end

def print_file files_so_far, filename
  progress_bar = sprintf("%3d%% [%2d/%2d]  ",
                         100 * files_so_far / @num_files,
                         files_so_far,
                         @num_files)
  # Print a progress bar, but make sure it fits on a single line. Filename
  # will be truncated if necessary.
  terminal_width = if defined?(IO) && IO.respond_to?(:console_size)
                     IO.console_size[1].to_i.nonzero? || 80
                   else
                     80
                   end
  max_filename_size = terminal_width - progress_bar.size
  if filename.size > max_filename_size then
    # Turn "some_long_filename.rb" to "...ong_filename.rb"
    filename = filename[(filename.size - max_filename_size) .. -1]
    filename[0..2] = "..."
  end
  line = "#{progress_bar}#{filename}"
  if $stdout.tty?
    # Clean the line with whitespaces so that leftover output from the
    # previous line doesn't show up.
    $stdout.print("\r" << (" " * @last_width) << ("\b" * @last_width) << "\r") if @last_width && @last_width > 0
    @last_width = line.size
    $stdout.print("#{line}\r")
  else
    $stdout.puts(line)
  end
  $stdout.flush
end