Re: [Boost-users] DateTime parsing question

From: Jeff Garland (jeff_at_[hidden])
Date: 2005-11-12 11:32:38

On Sat, 12 Nov 2005 06:00:17 -0700, Bart wrote
> On Fri, 11 Nov 2005 10:37:09 -0700, Sean Rohead wrote:
> 
> > I am trying to parse ISO datetime strings with millisecond resolution
> > and the fractional seconds are being truncated.  Am I doing something
> > wrong in the following code?
> > 
> > Thanks,
> > 
> > Sean Rohead
> > 
> > 
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> > 
> > #include <string>
> > #include "boost/date_time/posix_time/posix_time.hpp"
> > 
> > using namespace std;
> > using namespace boost::posix_time;
> > 
> > void main()
> > {
> >     string dateString1 = "20051004T151801";
> >     string dateString2 = "20051004T151801.123";
> >     ptime timestamp1(from_iso_string(dateString1));
> >     ptime timestamp2(from_iso_string(dateString2));
> >     cout << timestamp1 << endl;
> >     cout << timestamp2 << endl;
> > }
> 
> This code worked as expected for me:
>   2005-Oct-04 15:18:01
>   2005-Oct-04 15:18:01.123000
> 
> Which version of date_time are you using?

Just to add to this, you'll find the following in the change log documentation
for 1.32. to 1.33:

The from_iso_string function failed to parse fractional digits. We added code
that correctly parses when input has more digits, or too few digits, that the
compiled library precision. Ptimes with only a decimal are also correctly parsed.

http://www.boost.org/doc/html/date_time/details.html#date_time.changes

Jeff