def tracks_to_directory_tree(tracks):
    directories = ({}, [])

    for track in tracks:
        path = b""
        current = directories

        absolute_track_dir_path = os.path.dirname(uri_to_path(track.uri))
        relative_track_dir_path = re.sub("^" + re.escape(settings.LOCAL_MUSIC_PATH), b"", absolute_track_dir_path)

        for part in split_path(relative_track_dir_path):
            path = os.path.join(path, part)
            if path not in current[0]:
                current[0][path] = ({}, [])
            current = current[0][path]
        current[1].append(track)
    return directories

def tracks_to_directory_tree(tracks):
    directories = ({}, [])
    for track in tracks:
        path = u''
        current = directories

        local_folder = settings.LOCAL_MUSIC_PATH
        track_path = uri_to_path(track.uri)
        track_path = re.sub('^' + re.escape(local_folder), '', track_path)
        track_dir = os.path.dirname(track_path)

        for part in split_path(track_dir):
            path = os.path.join(path, part)
            if path not in current[0]:
                current[0][path] = ({}, [])
            current = current[0][path]
        current[1].append(track)
    return directories

def tracks_to_directory_tree(tracks, media_dir):
    directories = ({}, [])

    for track in tracks:
        path = b''
        current = directories

        absolute_track_dir_path = os.path.dirname(uri_to_path(track.uri))
        relative_track_dir_path = re.sub(
            '^' + re.escape(media_dir), b'', absolute_track_dir_path)

        for part in split_path(relative_track_dir_path):
            path = os.path.join(path, part)
            if path not in current[0]:
                current[0][path] = ({}, [])
            current = current[0][path]
        current[1].append(track)
    return directories

 def test_initial_slash_is_ignored(self):
     self.assertEqual(["foo", "bar", "baz"], path.split_path("/foo/bar/baz"))

 def test_dirs(self):
     self.assertEqual(["foo", "bar", "baz"], path.split_path("foo/bar/baz"))

 def test_single_dir(self):
     self.assertEqual(["foo"], path.split_path("foo"))

 def test_empty_path(self):
     self.assertEqual([], path.split_path(""))

 def test_initial_slash_is_ignored(self):
     self.assertEqual(
         ['foo', 'bar', 'baz'], path.split_path('/foo/bar/baz'))

 def test_single_folder(self):
     self.assertEqual(['foo'], split_path('foo'))

 def test_folders(self):
     self.assertEqual(["foo", "bar", "baz"], split_path("foo/bar/baz"))

 def test_only_slash(self):
     self.assertEqual([], split_path('/'))

 def test_only_slash(self):
     self.assertEqual([], path.split_path("/"))

 def test_empty_path(self):
     self.assertEqual([], split_path(''))