class PDF::Reader::Buffer

def prepare_inline_token
  str = ""
  buffer = []
  until buffer[0] =~ /\s/ && buffer[1, 2] == ["E", "I"]
    chr = @io.read(1)
    buffer << chr
    if buffer.length > 3
      str << buffer.shift
    end
  end
  @tokens << string_token(str.strip)
  @io.seek(-3, IO::SEEK_CUR) unless chr.nil?
end