Function unquote_quoted_string

email_validator/syntax.py:115–142

(text: str)

        return left_part, right_part

    def unquote_quoted_string(text: str) -> Tuple[str, bool]:
        # Remove surrounding quotes and unescape escaped backslashes
        # and quotes. Escapes are parsed liberally. I think only
        # backslashes and quotes can be escaped but we'll allow anything
        # to be.
        quoted = False
        escaped = False
        value = ""
        for i, c in enumerate(text):
            if quoted:
                if escaped:
                    value += c
                    escaped = False
                elif c == '\\':
                    escaped = True
                elif c == '"':
                    if i != len(text) - 1:
                        raise EmailSyntaxError("Extra character(s) found after close quote: "
                                               + ", ".join(safe_character_display(c) for c in text[i + 1:]))
                    break
                else:
                    value += c
            elif i == 0 and c == '"':
                quoted = True
            else:
                value += c

        return value, quoted

    # Split the string at the first unquoted @-sign or left angle bracket.
    left_part, right_part = split_string_at_unquoted_special(email, ("@", "<"))