I do not see the need to "force" developers needing timezone handling functionality to add a reference to gb.util.web; expecting to have timezone capability in a web component is simply not intuitive.
Couldn't the timezone be a new property of the Date type/object, defaulting to the System's timezone? This way older programs and interpreters ignoring it would still work. An alternative would be to add an (optional) timezone pareter to DateAdd, and/or a new Format specifier for timezone. I do not have it present now, but if Gambas has Dateserial/Timeserial functions, they could too receive timezone as optional info. Just my two cents. zxMarce On Apr 2, 2017, 17:40, at 17:40, "Benoît Minisini" <gam...@users.sourceforge.net> wrote: >Le 02/04/2017 à 22:34, Tobias Boege a écrit : >> On Sun, 02 Apr 2017, Benoît Minisini wrote: >>> Le 02/04/2017 à 18:07, Tobias Boege a écrit : >>>> Hello all, >>>> >>>> I wrote an RSS feed generator for one of my projects recently and >could >>>> luckily complete also the parser before the new semester starts >tomorrow. >>>> So you get a gb.rss component in the latest revision #8117. >>>> >>>> It should support all the things that are mentioned in the RSS 2.0 >>>> specification here [1], but there are still some problems: >>>> >>>> * The date conversion routines ignore timezones completely, >because >>>> I have no clue about working with timezones in Gambas. >>> >>> As I don't know RSS, can you elaborate? What do you need to do >exactly >>> with timezones? >>> >> >> The items in an RSS feed (and the feed itself) contain publication >dates >> such as >> >> Sat, 07 Sep 2002 10:00:00 GMT >> >> At the moment, when I read this string into a Date and use it in a >Gambas >> application, the timezone is ignored, i.e. it will be the 7th Sep >2002 at >> 10:00:00 *system-local timezone*, which is not correct. You can see >this >> when you serialise the RSS object into an XML document again. It >gives: >> >> Sat, 07 Sep 2002 10:00:00 +0100 >> >> because my system is in +0100 now. >> >> I don't know how this situation is best handled. The Gambas Date type >is >> not big enough to carry timezone information, is it? Then I would >have to >> convert the given time to the system timezone >> >> 10:00:00 GMT -> 09:00:00 +0100 >> >> which results in the XML output >> >> Sat, 07 Sep 2002 09:00:00 +0100 >> >> later, which is not identical to the source but at least represents >the same >> point in time. But I could image that being able to set the target >timezone >> explicitly would be desirable, e.g. when your RSS feed item >represents a >> story in a German newspaper, but your server runs in a US timezone. >> >> Regards, >> Tobi >> > >Date in Gambas are storead as a number of days and microseconds from a >specific origin, and are always considered as UTC. > >They are converted to the timezone associated with the localisation >when >you use Str() or Format() or Print. > >To convert a date ti a specific timezone, you have to convert the date >part taken as UTC, and then you add (or substract I think, must be >checked!) the time zone value (which are hours). > >Maybe this is an utility function to implement in gb.util.web... > >-- >Benoît Minisini > >------------------------------------------------------------------------------ >Check out the vibrant tech community on one of the world's most >engaging tech sites, Slashdot.org! http://sdm.link/slashdot >_______________________________________________ >Gambas-user mailing list >Gambas-user@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/gambas-user ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
