Re: [Boost-users] Where can I find an example of converting a seconds into a date using boost::date_time?

From: Stephen torri (storri_at_[hidden])
Date: 2005-01-08 04:37:27

On Fri, 2005-01-07 at 21:05 -0700, Jeff Garland wrote:
> On Fri, 07 Jan 2005 22:44:13 -0500, Stephen torri wrote
> > I need an example of taking a time duration in seconds and 
> > converting it to a date using Boost::Date_Time. For example,
> > 
> > 805168227 seconds (time from December 31st, 1969, at 4:00 P.M.)
> > 
> > = approx. 25 years, 194 days, 1 hr, 50 minutes, 27 seconds
> > 
> > = File created on 1994 June 15 5:50:27 
> > 
> > (Conversion did not account for leap years).
> 
> I'm not quite sure what you are asking. You have seconds since a known epoch
> and you want to create a date from that?  It would be something like:
> 
>   
>   ptime epoch(date(1969, Dec, 31), hours(16)); //4 pm on dec 31 1969
>   seconds s(...); //whatever
>   //what?
>   
> Or is seconds since creation that you have and what to backtrack to the date?

I apologize for the confusion. I have two fact: time of creation and the
epoch. The time of creation is given as the number of seconds that have
elapsed since the epoch. The value I read from a file header is in
seconds. So I want to do:

Epoch + seconds = date & time.

Something like:

 ptime epoch(date(1969,Dec,31), hours(16));
 seconds s_time (805168227);

 ptime creation_date = epoch + s_time;

 std::cout << "File created: " << creation_date.toString();

Stephen