controller.py 文件源码

def music_files():
    """
    Get a list of music files and file identifier hashes as JSON; also refresh 
    internal cache of music files and hashes.
    """
    global music_files_dict

    file_paths = sorted(glob.glob(path.join(settings.MUSIC_ROOT, '*')))

    out = []
    music_files_dict = dict()
    for file_path in file_paths:
        file_name = path.split(file_path)[1]
        file_hash = music_file_hash(file_name)
        out.append(dict(name=file_name,
                        hash=binascii.b2a_hex(file_hash)))
        music_files_dict[file_hash] = file_name

        # set music files dict in RFID handler
        rfid_handler.set_music_files_dict(music_files_dict)

    return json.dumps(out)