File Directory Ruby

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  4. Parse a mp3 file and returns [track, artist, album, year, comment, genre]
def parse_id3(mp3_file)
  format = 'Z30Z30Z30Z4Z30C'
  open(mp3_file) do |f|
    f.seek(-128, File::SEEK_END)
    if f.read(3) == "TAG" # An ID3 tag is present
      return f.read(125).unpack(format)
    end
  end
  return nil
end
parse_id3('ID3.mp3')