Allow arbitrary method output in CLDR formats

[autarch]

Migrated from rt.cpan.org #49767 (status was 'stalled')

Requestors:

• dmuey@cpan.org

From dmuey@cpan.org on 2009-09-16 18:42:33:

Hello again,

Last one I promise :)

Just FYI: I am filing this rt under DateTime::Locale instead DateTime
since ::Locale specifies formats, let me know if I should re-file under
DateTime (or if this simply won't be implemented), thanks.

strftime() has %s for 'The number of seconds since the epoch.'

Also it supported %{epoch} to have it call the DT method "epoch".

I can't seem to find an equivalent way to do 'The number of seconds
since the epoch.' with format_cldr()

$ perl -MDateTime -le 'print DateTime->now()->strftime("%B %{day}, %Y
%{hour_12}:%M:%S %p %{time_zone_long_name} == %s");'
September 16, 2009 6:24:23 PM UTC == 1253125463

$ perl -MDateTime -le 'print DateTime->now()->strftime("%B %{day}, %Y
%{hour_12}:%M:%S %p %{time_zone_long_name} == %{epoch}");'
September 16, 2009 6:24:33 PM UTC == 1253125473

$ perl -MDateTime -le 'print DateTime->now()->format_cldr("MMMM d, y
h:mm:ss a z == ???");'
September 16, 2009 6:24:40 PM UTC == ???

Is a CLDR %s equivalent currently available and I just missed it? (If so
what did I miss?)

If not: how [im]possible/[un]likley is it to be added?

[autarch]

From drolsky@cpan.org (@autarch) on 2009-10-02 01:32:56:

Also it supported %{epoch} to have it call the DT method "epoch".

I think supporting something like this in the CLDR output would be nice
but I haven't come up with anything that I think fits in with the CLDR
style. If you have any ideas please send them to datetime@perl.org.

[autarch]

From drolsky@cpan.org (@autarch) on 2012-11-18 17:41:06:

I've looked at this several times over the years and I've come to the
conclusion that there's no good way to do this. CLDR just uses random
letters as formats, so there's no good way to allow method names in the
format.

It's not that terrible to write:

$dt->format_cldr('MMM') . $dt->method