Function parse_quoted_string

src/websockets/headers.py:130–143

Parse a quoted string from ``header`` at the given position. Return the unquoted value and the new position. Raises: InvalidHeaderFormat: On invalid inputs.

(header: str, pos: int, header_name: str)

def parse_quoted_string(header: str, pos: int, header_name: str) -> tuple[str, int]:
    """
    Parse a quoted string from ``header`` at the given position.

    Return the unquoted value and the new position.

    Raises:
        InvalidHeaderFormat: On invalid inputs.

    """
    match = _quoted_string_re.match(header, pos)
    if match is None:
        raise InvalidHeaderFormat(header_name, "expected quoted string", header, pos)
    return _unquote_re.sub(r"\1", match.group()[1:-1]), match.end()


_quotable_re = re.compile(r"[\x09\x20-\x7e\x80-\xff]*")