def _split_header_entry(entry):
    """
    Split 3ds header entries by '=' character. If multiple values split
    those by ';' character.
    """
    key_str, val_str = entry.split('=', 1)
    if ';' in val_str:
        return key_str, val_str.strip('"').split(';')
    else:
        return key_str, val_str.strip('"')
