From: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: strftime: Need Help with Time Offsets
Date: Sat, 23 Dec 2000 21:13:45 +0000
Organization: Customer of Energis Squared
Lines: 34
Message-ID: <0nt94tkh5ptfohe9414da1u3geja7ml4vm@4ax.com>
References: <1a524t0tk28cmv3vqfq26tooe0qeikhgm5 AT 4ax DOT com> <Pine DOT SUN DOT 3 DOT 91 DOT 1001221110346 DOT 28580O-100000 AT is> <ku454tke181c70f6rimuamfd2pc9p0blfk AT 4ax DOT com> <2561-Fri22Dec2000120234+0200-eliz AT is DOT elta DOT co DOT il> <pki64tssb5jku2tjnqg3ch5oqr5ngevntk AT 4ax DOT com> <1190-Fri22Dec2000173248+0200-eliz AT is DOT elta DOT co DOT il>
NNTP-Posting-Host: modem-12.amantadine.dialup.pol.co.uk
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Trace: newsg3.svr.pol.co.uk 977606047 14637 62.136.77.12 (23 Dec 2000 21:14:07 GMT)
NNTP-Posting-Date: 23 Dec 2000 21:14:07 GMT
X-Complaints-To: abuse AT theplanet DOT net
X-Newsreader: Forte Agent 1.7/32.534
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

"Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il> wrote:

> > In respect of %z, what needs to be done to make strftime() compliant
> > with current standards?
> 
> It should work like in glibc.
> 
> But C99 defines about a dozen more conversion specifiers which aren't
> supported by DJGPP right now.  It would be nice to add them as well.

I agree, but this all takes time.  If %z is fixed now shouldn't it go
in?

Actually, I did also start work on implementing some of the missing
features.  A couple of these, such as %P, are complete no-brainers and
are easily added.  Others require some crazy date maths which is just
taking too long to figure out.

If someone has the time to figure out the calculation for week numbers
(%V) from any supplied date, that would help.  I have a template
function for this if anyone is interested.

FWIW, I only see about 6 conversion specifiers that are missing from
DJGPP or do not do what they are supposed to, unless you want to count
%O and %E modifiers.  

None of these seem particularly critical, at least no more so than %z.
Which major new functionality from C99 are you refering to?  Note that
someone else has already posted a patch which reports to add locale
support to DJGPP.

BTW, if I fill a struct tm with values for 0/Jan/YYYY, then call
mktime(), it should be modified to 31/Dec/(YYYY-1), right?  This isn't
happening.