[gdal-dev] New config option for date/time output

[Ari Jolma]

15.03.2016, 14:08, Joaquim Luis kirjoitti:
> GMT uses "yyy-mm-ddT[hh:mm:ss] (Gregorian) or yyyy-Www-ddT[hh:mm:ss] 
> (ISO)"
>
> http://gmt.soest.hawaii.edu/doc/latest/gmt.conf.html#calendar-time-parameters 
>
>
> It would be nice to use the same.

I'm not sure I understand you correctly but strftime can do this:

OGR_DATETIME_FORMAT = "%Y-%m-%dT%H:%M:%S"

gives for example 2016-01-10T08:25:12 and

OGR_DATETIME_FORMAT = "%Y-%W-%dT%H:%M:%S"

gives 2016-01-10T08:25:12 for the same time - 10.1.2016 is on week two 
(strftime: %W = Week number with the first Monday as the first day of 
week one (00-53))

I think that there needs to be separate options for date and datetime, 
i.e., OGR_DATE_FORMAT and OGR_DATETIME_FORMAT.

Ari

>
> Joaquim
>
>> Folks,
>>
>> The OGRFeature::GetFieldAsString returns date/time fields formatted 
>> in non-standard way. For example date is output as "year/month/day" 
>> as more usual "year-month-day". This causes problems in many programs.
>>
>> I suggest adding a new config option OGR_DATE_FORMAT, which, if set, 
>> would make the method return date/time formatted according to it. I 
>> suggest that we use the strftime and its format argument as the 
>> target for the new option.
>>
>> The implementation is complicated a bit when milliseconds and 
>> timezones are involved since they are not included in the struct tm 
>> used by strftime. I suggest that we assume seconds are formatted as 
>> :\d\d in the format and simply add milliseconds (as .\d\d\d) and 
>> timezone (as [+-]\d\d(:\d\d)), if they exists, after the second.
>>
>> Do you think this needs a RFC?
>>
>> I'm willing to implement the changes.
>>
>> Ari
>>
>> _______________________________________________
>> gdal-dev mailing list
>> gdal-dev at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/gdal-dev