Stats printer that prints just the files being documented with a progress bar

Methods
P
Instance Public methods
print_file(files_so_far, filename)

Prints a file with a progress bar

Source: show | on GitHub 

# File lib/rdoc/stats/normal.rb, line 14
def print_file files_so_far, filename
  return unless $stdout.tty?

  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 = (ENV['COLUMNS'] || 80).to_i
  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

  # 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")
  $stdout.flush
end