[Boost-users] ptime input_facet error with %f flag at converting string to ptime (1.36, 1.44)

Subject: [Boost-users] ptime input_facet error with %f flag at converting string to ptime (1.36, 1.44)
From: Sören Freudiger (s.freudiger_at_[hidden])
Date: 2011-06-30 08:30:06

Hello
I have problems with reading the time fraction at converting from string 
to ptime. Here is the regarding soruce code:

|#include  <iostream>
#include  <string>
#include  <boost/date_time.hpp>
#include  <boost/date_time/posix_time/posix_time.hpp>
#include  <boost/date_time/gregorian/gregorian.hpp>
#include  <boost/date_time/posix_time/conversion.hpp>

int  main(  int,  char  *  )
{
    using  namespace  std;
    using  namespace  boost;
    using  namespace  boost::posix_time;
    using  namespace  boost::local_time;
    using  namespace  boost::gregorian;

    time_facet*         output_facet=  new  time_facet();
    time_input_facet*  input_facet=  new  time_input_facet();

    stringstream sstream;
    sstream.imbue(locale(locale::classic(),  output_facet));
    sstream.imbue(locale(sstream.getloc()  ,  input_facet));

    string format("%d/%m/%Y %H:%M:%S.%f");  //example works fine without %f!!!
    output_facet->format(  format.c_str()
);
    input_facet->format(  format.c_str()  <
/span>);

    ptime dt=  microsec_clock().local_time();

    sstream.str("");
    sstream<<  dt;
    cout<<  sstream.str()  <<  end
l;
    string time_string=  sstream.str();

    ptime tgtDt(  boost::date_time::not_a_date_time);
    sstream.str(  time_string.c_str()  
);
    sstream>>  tgtDt;
    cout<<  tgtDt<<  endl;
}|

The program runs fine without the %f inside the format string. But with 
%f tgtDt is "not-a-date-time". I use boost 1.44 and the doc says %f 
shold work, because every input incompatible format flag is marked bei 
"!" in the documentation.

Any ideas how to get the frac part out of a string?