Re: How do you format date-times in RFC 3339 style?

[sirgazil]

Hi, Nala :)


El 11/02/19 a las 4:39 p. m., Nala Ginrut escribió:
> Hi there!
> Guile web module has provided an unexpected API for that:
>
> (define write-date (@@ (web http) write-date))


I think I prefer using public procedures, so I'll leave the error there 
for now.

But I'm curious, how do you get the time zone offset using `write-date`?


> (use-modules (srfi srfi-19))
>
> (define write-date (@@ (web http) write-date))
> (call-with-output-string (lambda (port) (write-date (current-date) 
port)))
$1 = "Tue, 12 Feb 2019 14:23:52 GMT"

I was hoping `write-date` would write the date/time in RFC 3339 format 
(https://tools.ietf.org/html/rfc3339#section-5.8).


> sirgazil <address@hidden <mailto:address@hidden>> 于 2019年2月12日 
> 周二 03:18写道：
>
>     Hi,
>
>     I'm generating atom feeds from SXML that don't validate because of the
>     date-time format I'm using:
>
>       > (use-modules (srfi srfi-19))
>       > (date->string (current-date) "~Y-~m-~dT~H:~M.~S~z")
>     $1 = "2019-02-11T13:42.57-0500"
>
>     String $1 is close to the RFC 3339 style,¹ which is the required format
>     for atom feeds, but the time zone offset should be -05:00, and Guile's
>     SRFI-19 ~z time zone escape is RFC 822 style, which formats the time
>     zone offset as -0500.
>
>     What should I do to get the offset in the required format?
>
>
>     Thanks,
>
>
>     _____
>
>     1. http://www.faqs.org/rfcs/rfc3339.html
>
>
>     -- 
>     Luis Felipe López Acevedo
>     http://sirgazil.bitbucket.io/

--
Luis Felipe López Acevedo
http://sirgazil.bitbucket.io/