[ale] Ripping CD's

[James CE Johnson]

Chris Fowler wrote:

>I have made the decision to convert my huge CD collection to MP3 now
>that I have a DVD burner.  My CD's take up too much room and I can just
>store them in my attic.  I normally use mp3c but I would still like to
>use it but in script form to create a structure like this on disk:
>
><genre>/<artist>/<album>/<mp3>
>
>Has anyone written scripts that can do this?  
>

The attached perl script is a quick hack I did in December to organize 
my collection in three different ways: ByAlbum/abum/song.mp3, 
ByArtist/artist/album/song.mp3, ByGenre/genre/artist/album/song.mp3. cd 
to the top of a directory full of mp3s and let it go to work. It tries 
to be clever with symlinks and doesn't always get things right but, hey, 
it *is* a quick hack :-)

>Maybe even a perl script
>that can read the information from the mp3 file and place it in those
>directores.  Maybe even outmut a 
>
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>http://www.ale.org/mailman/listinfo/ale
>  
>

-------------- next part --------------
#!/usr/bin/perl

# jcej - 12/2003
# A quick script to organize a set of MP3s
# into directories ByArtist, ByAlbum, ByGenre

use File::Basename;
use File::Find;
use File::Path;
use Getopt::Std;
use MP3::Tag;

# Additional genre's not known by MP3::Tag
my $gl = { 141 => "Christian Rock"
         };

my %cl = ();
getopts("Vvg", \%cl);

if($cl{g}) {
  my $genres = MP3::Tag->genres;
  print join(", ", sort @$genres) . "\n";
  exit 0;
}

foreach my $catalog ("ByArtist", "ByAlbum", "ByGenre") {
  mkpath($catalog, 1, 0755);
}

my $options =
  {
   wanted => \&catalog,
   no_chdir => 1,
  };
find($options, @ARGV);

sub catalog {
  my $file = $File::Find::name;
  return if( ! -f $file || -l $file || $file !~ m/\.mp3$/ );
  print "$file\n" if($cl{v} || $cl{V});

  my $mp3 = MP3::Tag::->new($file);
  return if( ! $mp3 );

  my ($song, $track, $artist, $album) = $mp3->autoinfo();

  if($cl{V}) {
    my @tags = $mp3->get_tags;
    foreach my $tagType (@tags) {
      my $tag = $mp3->{$tagType};
      while ( my ($key, $value) = each %$tag) {
        print "$tagType\t$key\t$value\n";
      }
    }
  }

  my $genre = $mp3->{ID3V1}->{genre};
  if($genre eq '') {
    my $genreID = $mp3->{ID3v1}->{genreID};
    $genre = $mp3->genres($genreID);
    if($genre eq '') {
      $genre = $gl->{$genreID};
    }
    if($genre eq '' || ref($genre)) {
      $genre = 'UNKNOWN';
    }
  }

  my $byAlbum  = "$album/$song" . "\.mp3";
  my $byArtist = "$artist/$byAlbum";
  my $byGenre  = "$genre/$byArtist";

  makeLink($file, "ByArtist/$byArtist");
  makeLink($file, "ByAlbum/$byAlbum");
  makeLink($file, "ByGenre/$byGenre");
}

sub makeLink {
  my($from, $to) = @_;
  my $dir = dirname($to);
  mkpath($dir, 1, 0755);
  my $prefix = calculatePrefix($to);
  symlink($prefix . $from, $to);
}

sub calculatePrefix {
  my $file = shift;
  my $pfx = "";
  while(($file = dirname($file)) ne '.') {
    $pfx .= "../";
  }
  return $pfx;
}