#!/usr/bin/ruby

artist = ""
album = ""
tracks = []

ARGV.each do |f|
  b = File.basename(f, '.mp3')

  IO.popen("metaguru '#{f}'").each do |l|
    if l =~ /^\s*Track\s*:/
      x = l[11, l.length]
      album = x[0, x.length - 2]
    elsif l =~ /^\s*Artist\s*:/
      x = l[11, l.length]
      artist = x[0, x.length - 2]
    elsif l =~ /^\s*TXXX/
      x = l[43, l.length]
      x = x[0, x.length - 12]
      x.gsub(/<Marker><Name>([^<]+)<\/Name><Time>([^<]+)<\/Time><\/Marker>/) do |s|
        t = $2
        c = $1.gsub("\\a0", "")
        t.gsub!(/^((\d\d):)?(\d\d):(\d\d)\.\d\d\d$/) do |s1|
          mm = $3.to_i
          ss = $4.to_i
          mm += $2.to_i * 60 if $2
          "%.2d:%.2d:00" % [ mm, ss ]
        end
        tracks << { c => t}
        nil
      end
    end
  end

  out = File.open(b + ".cue", "w")
  out.puts "PERFORMER \"#{artist}\"\n"
  out.puts "TITLE \"#{album}\"\n"
  out.puts "FILE \"#{f}\" WAVE\n"

  n = 1

  tracks.each do |x|
    x.each do |c, t|
      out.puts "  TRACK %.02d AUDIO\n" % n
      n += 1
      out.puts "    PERFORMER \"#{artist}\"\n"
      out.puts "    TITLE \"#{c}\"\n"
      out.puts "    INDEX 01 #{t}\n"
    end
  end

  out.close
end