## -*- Ruby -*-
## Generiert eine Playlist aller Subverzeichnisse

def maskiere_leerzeichen(pfad)
  return pfad.gsub(/ /, "?")
end

def compute_playlist(dir_listing, pattern)
  files = dir_listing.reject{|f| File.directory?(f)}
  music_files = files.grep(pattern)
  music_files.sort.each{|f|
    pfad = f.gsub(/\//, "\\")
    printf("%s\n", pfad)
  }
  dirs = dir_listing.select{|f| File.directory?(f)}
  dirs.sort.each{|d|
    dir_listing = Dir[maskiere_leerzeichen(d) + "/*"].entries
    compute_playlist(dir_listing, pattern)
  }
end

pattern = /(\.mp3$)|(\.wav$)/i
compute_playlist(Dir["*"].entries, pattern)