gettextfile

# File lib/net/ftp.rb, line 637
    def gettextfile(remotefile, localfile = File.basename(remotefile)) # :yield: line
      result = nil
      if localfile
        f = File.open(localfile, "w")
      elsif !block_given?
        result = ""
      end
      begin
        retrlines("RETR " + remotefile) do |line, newline|
          l = newline ? line + "\n" : line
          f.print(l) if localfile
          yield(line, newline) if block_given?
          result.concat(l) if result
        end
        return result
      ensure
        f.close if localfile
      end
    end