Re: ID3 Tags (#136)

class ID3
def initialize(tags)
@tags = tags
@genres = [‘Classic Rock’, ‘Country’, ‘Dance’, ‘Disco’, ‘Funk’,
‘Grunge’, ‘Hip-Hop’, ‘Jazz’,
‘Metal’, ‘New Age’, ‘Oldies’, ‘Other’, ‘Pop’, ‘R&B’, ‘Rap’,
‘Reggae’, ‘Rock’, ‘Techno’,
‘Industrial’, ‘Alternative’, ‘Ska’, ‘Death Metal’, ‘Pranks’,
‘Soundtrack’, ‘Euro-Techno’,
‘Ambient’, ‘Trip-Hop’, ‘Vocal’, ‘Jazz+Funk’, ‘Fusion’, ‘Trance’,
‘Classical’, ‘Instrumental’,
‘Acid’, ‘House’, ‘Game’, ‘Sound Clip’, ‘Gospel’, ‘Noise’,
‘AlternRock’, ‘Bass’, ‘Soul’, ‘Punk’,
‘Space’, ‘Meditative’, ‘Instrumental Pop’, ‘Instrumental Rock’,
‘Ethnic’, ‘Gothic’, ‘Darkwave’,
‘Techno-Industrial’, ‘Electronic’, ‘Pop-Folk’, ‘Eurodance’,
‘Dream’, ‘Southern Rock’, ‘Comedy’,
‘Cult’, ‘Gangsta’, ‘Top 40’, ‘Christian Rap’, ‘Pop/Funk’,
‘Jungle’, ‘Native American’, ‘Cabaret’,
‘New Wave’, ‘Psychadelic’, ‘Rave’, ‘Showtunes’, ‘Trailer’, ‘Lo-
Fi’, ‘Tribal’, ‘Acid Punk’,
‘Acid Jazz’, ‘Polka’, ‘Retro’, ‘Musical’, ‘Rock & Roll’, ‘Hard
Rock’, ‘Folk’, ‘Folk-Rock’,
‘National Folk’, ‘Swing’, ‘Fast Fusion’, ‘Bebob’, ‘Latin’,
‘Revival’, ‘Celtic’, ‘Bluegrass’,
‘Avantgarde’, ‘Gothic Rock’, ‘Progressive Rock’, ‘Psychedelic
Rock’, ‘Symphonic Rock’, ‘Slow Rock’,
‘Big Band’, ‘Chorus’, ‘Easy Listening’, ‘Acoustic’, ‘Humour’,
‘Speech’, ‘Chanson’, ‘Opera’,
‘Chamber Music’, ‘Sonata’, ‘Symphony’, ‘Booty Bass’, ‘Primus’,
‘Porn Groove’, ‘Satire’, ‘Slow Jam’,
‘Club’, ‘Tango’, ‘Samba’, ‘Folklore’, ‘Ballad’, ‘Power Ballad’,
‘Rhythmic Soul’, ‘Freestyle’,
‘Duet’, ‘Punk Rock’, ‘Drum Solo’, ‘A capella’, ‘Euro-House’,
‘Dance Hall’]
self
end
def parse
if @tags[0…2] = “TAG”
@song = @tags[3…32].strip
@album = @tags[33…62].strip
@artist = @tags[63…92].strip
@year = @tags[93…96].strip

   #don't strip comment until after track number is checked
   @comment  = @tags[97..126]
   @genre    = @genres[@tags[127]-1]

   #checks for Track Number
   if @comment[28] == 0
     @track  = @comment[29].to_s
   end
   @comment.strip!
 end
 self

end
def print
puts "Title: " + @song.to_s
puts "Album: " + @album.to_s
puts "Artist: " + @artist.to_s
puts "Year: " + @year.to_s
puts "Comment: " + @comment.to_s
puts "Genre: " + @genre.to_s
puts "Track: " + @track.to_s
self
end
end

class MP3
@id3 = 0
def initialize(file)
@mp3 = IO.read(file)
self
end
def parse_id3
@id3 = ID3.new(@mp3[-128…-1])
@id3.parse
self
end
def print
@id3.print
self
end
end

@mp3 = MP3.new(ARGV[0]).parse_id3.print

–Matt Pruitt

Please tell me how to run it on command line. When I run it, it appears
"can’t
convert nil into String (TypeError) from reads_controller.rb: in
"initialize’, from reads_controller.rb: in ‘new’, from
reads_controller.rb

Please help me. I’m a newbie for Ruby :frowning:

On Oct 23, 2007, at 5:49 AM, Gosho Thao wrote:

Please tell me how to run it on command line. When I run it, it
appears
"can’t
convert nil into String (TypeError) from reads_controller.rb: in
"initialize’, from reads_controller.rb: in ‘new’, from
reads_controller.rb

Please help me. I’m a newbie for Ruby :frowning:

The file you show is probably part of a Rails project. For someone
new to Ruby, that’s pretty much jumping into the deep end of the pool.

You should probably start with some Ruby basics, like perhaps these
tutorials:

http://www.ruby-lang.org/en/documentation/quickstart/

http://tryruby.hobix.com/

Also, please create a new message when posting a question to this
mailing list. Replying to an existing topic messes up the threading
for everyone.

James Edward G. II

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