Powerline segment for iTunes now playing

itunes-nowplaying.py

class iTunesPlayerSegment(PlayerSegment):
	def get_player_status(self, pl):
		status_delimiter = '-~`/='
		ascript = '''
			tell application "System Events"
				set process_list to (name of every process)
			end tell

			if process_list contains "iTunes" then
				tell application "iTunes"
					if player state is playing then
						set t_title to name of current track
						set t_artist to artist of current track
						set t_album to album of current track
						set t_duration to duration of current track
						set t_elapsed to player position
						set t_state to player state
						return t_title & "{0}" & t_artist & "{0}" & t_album & "{0}" & t_elapsed & "{0}" & t_duration & "{0}" & t_state
					end if
				end tell
			end if
		'''.format(status_delimiter)
		now_playing = asrun(pl, ascript)
		if not now_playing:
			return
		now_playing = now_playing.split(status_delimiter)
		if len(now_playing) != 6:
			return
		title, artist = now_playing[0], now_playing[1]
		title = title[0:25] + "…" if len(title) > 25 else title
		artist = artist[0:15] + "…" if len(artist) > 15 else artist
		state = _convert_state(now_playing[5])
		total = _convert_seconds(now_playing[4])
		elapsed = _convert_seconds(float(now_playing[4]) - float(now_playing[4]))
		return {
			'title': title,
			'artist': now_playing[1],
			'album': now_playing[2],
			'total': total,
			'elapsed': elapsed,
			'state': state
		}

itunes = with_docstring(iTunesPlayerSegment(),
('''Return iTunes now playing information.

Requires ``osascript``.

{0}
''').format(_common_args.format('itunes')))