Removes line ending characters and returns a tuple (`stripped_line`,
    `is_terminated`).

def _line_parse(line):
    """Removes line ending characters and returns a tuple (`stripped_line`,
    `is_terminated`).
    """
    if line[-2:] in ["\r\n", b"\r\n"]:
        return line[:-2], True
    elif line[-1:] in ["\r", "\n", b"\r", b"\n"]:
        return line[:-1], True
    return line, False