id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
11686,boost::posix_time::ptime custom facet doesn't work with BOOST_LOG_TRIVIAL,anonymous,Andrey Semashev,"Here's my program, I expect BOOST_LOG_TRIVIAL to print HH:MM:SS value.

cout.imblue does it correctly.

Not sure why

std::ostream& operator<<(std::ostream& os, const boost::posix_time::ptime& o)

is never called for

BOOST_LOG_TRIVIAL << ptime

Is this a bug in library?

#include <boost/log/trivial.hpp>
#include <boost/log/utility/setup.hpp>
#include <boost/log/support/date_time.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <locale>

namespace logging  = boost::log;
namespace pt       = boost::posix_time;

class my_ptime_facet : public std::locale::facet
{
public:
    enum option{
        use_hhmmss //,....
    };

    static std::locale::id id; 
    my_ptime_facet(option o=use_hhmmss):
    facet(0),
        _option(o)
    {
    };
    option get_option() const {return _option;};
protected:
    option _option;
};

std::locale::id my_ptime_facet::id; //Facet family unique id

std::ostream& operator<<(std::ostream& os, const boost::posix_time::ptime& o)
{
    std::locale const& l = os.getloc();
    if( std::has_facet<my_ptime_facet>(l) ){
        my_ptime_facet const& f =  std::use_facet<my_ptime_facet>(l);
        switch(f.get_option()){
        case my_ptime_facet::use_hhmmss:            
            os << o.time_of_day().hours() << "":"" << o.time_of_day().minutes() << "":"" << o.time_of_day().seconds() ;
            break;
        }
        return os;
    }    
    return os;
}

int main()
{
    logging::add_common_attributes();

    boost::posix_time::ptime t1(boost::posix_time::time_from_string(""2014-11-23 23:59:59.117""));    
    std::locale  custom_locale ( std::locale(), new my_ptime_facet(my_ptime_facet::use_hhmmss) );

    auto sink = logging::add_console_log(std::cout);

    sink->imbue(custom_locale);
    std::cout.imbue(custom_locale); 

    std::cout<< t1 <<std::endl;     //prints 23:59:59
    BOOST_LOG_TRIVIAL(info) << t1;  //prints 2014-Nov-23 23:59:59.117000, Why Not 23:59:59
}",Bugs,closed,To Be Determined,log,Boost 1.58.0,Problem,invalid,,