Hi John
Thanx for your informative email.
Luckily my code is not intended to do any calculations. It simply
accepts, parses and returns date strings - which must be provided in a
given format.
I did read various parts from your references and understand they are
complex for good reason. The whole topic is a marvellous example of a
can of worms.
Regarding writing new code:
As for ISO 8601, I could buy a copy of the doc for $AUD235, or start
with a similar standard, RFC 3339 for free.
As for the BNF on p 12 of RFC 3339, it resembles the BNF for "RFC4514:
Lightweight Directory Access Protocol (LDAP): String Representation of
Distinguished Names." [1] for which I have already written a
Marpa::R2-based parser [2]. So, definitely doable, but fortuitously not
needed at this point in time.
[1] https://www.ietf.org/rfc/rfc4514.txt
[2] https://metacpan.org/pod/X500::DN::Marpa
--
Ron Savage - savage.net.au
