Re: [Boost-users] Possible bugs in date_time package

From: Jeff Garland (jeff_at_[hidden])
Date: 2007-02-27 10:58:26

Gregory J. Sharp wrote:
> I'm trying to use the date_time/ptime module to parse strings.
> 
> Platform: MacOS X 10.4.7 on Intel
> Compiler: gcc 4.0.1
> 
> I have three potential bugs, so far. Perhaps I'm unreasonable in  
> hoping that the
> following strings should be acceptable to time_from_string.
> 
> 1. time_from_string( "2006-12-06" ) != time_from_string( "2006-12-06  
> 00:00:00" )
> 2. time_from_string( "2006/12/06" ) throws an exception (probably  
> related to 1)
>     even though time_from_string( "2006,12,06" ) doesn't throw.
> 3. time_from_string( "2006-12-06 " ) throws an exception because it  
> passes a null
>     string to str_from_delimited_time_duration(), which tries to read  
> the first
>     character of the string, even though there isn't one.
> 
> I think 1 & 2 are probably caused by parse_delimited_time() doing a  
> split on ' ' and getting nothing to pass to  
> parse_delimited_time_duration().

The main problem is that the time_from_string function is expecting a complete 
time (eg: 2006-12-26 00:00:00), not just a date.  I believe all of these will 
parse correctly if you do this:

    using namespace boost::gregorian;
    date d = from_string("2006-12-06");

which can trivially be turned into a ptime if that's what you need.

Jeff