stats.rb

require 'rubygems'
require 'nokogiri'



def parse_lib
	@list = []
	@doc = Nokogiri::XML(File.open('lib.xml', 'r'))
	# Find each dictionary item and loop through it
	@doc.xpath('/plist/dict/dict/dict').each do |node|

	  hash     = {}
	  last_key = nil

	  # Stuff the key value pairs in to hash.  We know a key is followed by
	  # a value, so we'll just skip blank nodes, save the key, then when we
	  # find the value, add it to the hash
	  node.children.each do |child|

		next if child.blank? # Don't care about blank nodes

		if child.name == 'key'
		  # Save off the key
		  last_key = child.text
		else
		  # Use the key we saved
		  hash[last_key] = child.text
		end
	  end

	  @list << hash # push on to our list
	end
end

def genre_breakdown
	count = {}
	@list.each do |track|
		next if !track["Play Count"] || track["Play Count"] == "0"
		
		c = track["Play Count"]
		g = track["Genre"] || :undefined
		
		 if count.keys.include?(g.to_sym)
			count[g.to_sym] += c.to_i
		 else
			count[g.to_sym] = c.to_i
		 end
	end
	count
end

def genre_analysis
	@genres = {}
	@list.each do |track|
		g = track["Genre"] || :undefined
		
		if genres.keys.include?(g.to_sym)
			genre = @genres[g.to_sym]
		else
			genres[g.to_sym] = {}
			genre = @genres[g.to_sym]
		end
	
		
		
		c = track["Play Count"]
		g = track["Genre"] || :undefined
		
		 if count.keys.include?(g.to_sym)
			count[g.to_sym] += c.to_i
		 else
			count[g.to_sym] = c.to_i
		 end
	end