iTunes to Rhythmbox

I nearly wrote a script that transfers my iTunes ratings to Rhythmbox. Instead I used Edgar Salgado’s version of iTunesToRhythm.

See, I have been spending most of my time lately in GNOME 3 on openSUSE Linux. All of my music is copied over and loaded into Rhythmbox, but I wanted to continue my quest to rate all of my music. I spent roughly an hour starting my own solution before realizing that this was probably a solved problem.

Salgado’s code is a fork of another project, but he won my heart because he wrote how to use his version.

$ git clone git@github.com:esalgado/iTunesToRhythm.git
$ cd iTunesToRhythm
$ python iTunesToRhythm.py -w ~/Sync/iTunes\ Music\ Library.xml \
  ~/.local/share/rhythmbox/rhythmdb.xml

Some things about the process annoyed me. For some strange reason, not every iTunes entry included a file location. I manually fixed those. More annoying: the iTunes XML showed roughly 7,000 tracks as rated even though the iTunes application showed over 10,000 as rated. I chose to live with that. It’s only 3,000 tracks that I need to rate again.

sigh

Hey, let’s make a pretty picture.

graph-ratings.rb

require 'nokogiri'
require 'gruff'

SOURCE = "/home/brian/.local/share/rhythmbox/rhythmdb.xml"

rhythmdb = Nokogiri::XML File.open SOURCE
songs = rhythmdb.xpath "/rhythmdb/entry[@type='song']"
ratings = {}

# Group the songs by rating.
songs.each do |song|
  rating = song.xpath("rating").text.to_i || 0
  total_time = song.xpath("duration").text.to_i || 0
  ratings[rating] ||= { songs: 0, time: 0 }
  ratings[rating][:songs] += 1
  ratings[rating][:time] += total_time
end

# Print it.
puts 'Rating Songs Percent Duration'

ratings.keys.sort.each do |rating|
  song_count = ratings[rating][:songs]
  total_seconds = ratings[rating][:time] #Rhythmbox uses seconds
  seconds = total_seconds % 60
  minutes = (total_seconds / 60) % 60
  hours = (total_seconds / (60 * 60)) % 24
  days = total_seconds / (60 * 60 * 24)

  percentage = song_count.to_f() / songs.count.to_f() * 100.0
  duration = format '%02d:%02d:%02d:%02d', days, hours, minutes, seconds
  description = format '%6d %5d %6.1f%% %s', rating, song_count, percentage, duration
  puts description

# Graph it.
data = ratings.map { |rating, info| [ rating, [ info[:songs]]] }

graph = Gruff::Pie.new
graph.title = "Songs Grouped By Rating"

ratings.keys.sort.each { |rating| graph.data rating, ratings[rating][:songs] }

graph.write "song-pie.png"

This calls for Nokogiri instead of plist, which gives me the opportunity to flex my amazing XPath skills. Nothing too complex. Thank goodness.

$ ruby graph-ratings.rb
Rating Songs Percent Duration
     0  8926   55.2% 24:13:00:24
     1   254    1.6% 00:19:49:30
     2   984    6.1% 02:21:42:54
     3  3932   24.3% 10:08:49:09
     4  1716   10.6% 04:10:50:01
     5   370    2.3% 00:23:16:01

How about that pretty picture?

I’ve made progress since March. It looks less like Pac Man now.