Parse a domain name, appending the origin if itβs not absolute.
Parse a regular or wildcard domain name.
Parse a single entry, skipping comments and whitespace. Entries
are of the form:
Parse a decimal number into a u32.
Helper for parse_rr
Split an entry into tokens: split on whitespace, taking quoting
into account, and if there are parentheses or quotes continue to
the matched delimiter.
Tokenise an escape sequence
Try to parse a record type with data. Returns None
if there is
no parse, since this does not necessarily indicate a fatal error.