can_parse_by_name

# File lib/rdoc/parser.rb, line 144
  def self.can_parse_by_name file_name
    _, parser = RDoc::Parser.parsers.find { |regexp,| regexp =~ file_name }

    # The default parser must not parse binary files
    ext_name = File.extname file_name
    return parser if ext_name.empty?

    if parser == RDoc::Parser::Simple and ext_name !~ /txt|rdoc/ then
      case check_modeline file_name
      when nil, 'rdoc' then # continue
      else return nil
      end
    end

    parser
  rescue Errno::EACCES
  end