groovesalad.rb

#!/usr/bin/env ruby -wKU
# grab goove salad playlist from twitter
# (avoids using Soma.fm to keep costs low)

require 'rss/2.0'
require 'open-uri'

# thank you http://rubyrss.com!

# the groovesalad twitter feed
source   = "http://twitter.com/statuses/user_timeline/6681342.rss"

# the number to of songs and columns to show
number   = ARGV.shift.to_i || 3
truncate = ARGV.shift.to_i || 80

# read the feed
rss = RSS::Parser.parse(open(source).read, false)
songs = rss.items[0..number-1].map {|tweet| tweet.title.sub(/^.*♫ /,'') }

def justify_on_dash(song_list, spacer = " ")

  song_list.map!{|song| song.to_s.split(/ - /) }

  song_length = song_list.inject(""){|longest,current| longest.length > current.last.length ? longest : current.last }.size

  artist_length = song_list.inject(""){|longest,current| longest.length > current.first.length ? longest : current.first }.size

  song_list.map{|artist,song| "#{artist.rjust(artist_length, spacer)} - #{song.ljust(song_length, spacer)}"}
  
end

justify_on_dash(songs).each {|track| puts track[0..truncate-1] }