Re: [Boost-users] [date_time] how to parse "1/13/2006"

6 Dec 2006


      Markus Werle <numerical.simulation <at> web.de> writes:
...
Hi!
I have to read in a file format where the date is given as
month/day/year, but without leading '0' for day and month.
...
From http://boost.org/doc/html/date_time/date_time_io.html I could not
guess how to declare the facet format string (No leading zeroes required)
Could you please complete the following code?
std::istringstream iss;
local_time_input_facet* input_facet = new local_time_input_facet();
ss.imbue(locale(ss.getloc(), input_facet));
input_facet->format("???????");
Though the docs do not state it, the leading zeores can be omitted during
read in, so the output of

#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/local_time/local_time.hpp>

#include <iostream>
#include <sstream>

int main()
{
	try
	{
		using namespace boost::posix_time;
		using namespace boost::gregorian;
		using namespace boost::local_time;

		std::istringstream iss("1/13/2006");
		local_time_input_facet* input_facet = new local_time_input_facet();
		iss.imbue(std::locale(iss.getloc(), input_facet));
		input_facet->format("%m/%d/%Y");
		
		ptime p;
		iss >> p;
		std::cout << p << std::endl;
	}
	catch (std::exception const & e)
	{
        std::cerr << e.what() << std::endl;
	}
	catch (...)
	{
		std::cerr << "CRASH!!" << std::endl;
	}
}


is 

2006-Jan-13 00:00:00