id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2811	date_time iostream dependencies	Nigel T Stewart <nigels@…>	az_sw_dude	"For footprint and performance reasons our codebase uses boost with BOOST_NO_IOSTREAM.  However, date_time has some iostream dependency in the form of std::ostringstream used for formatting string outputs.  For example, the method partial_date::to_string uses std::ostringstream to convert an integer to a string.

An alternative is as follows:

{{{
   //! Returns string suitable for use in POSIX time zone string
   /*! Returns string formatted with up to 3 digits: 
    * Jan-01 == ""0"" 
    * Feb-29 == ""58""
    * Dec-31 == ""365"" */
   virtual std::string to_string() const
   {
     date_type d(2004, month_, day_);
     unsigned short c = d.day_of_year() - 1; // numbered 0-365 while day_of_year is 1 based...
     std::string ret;
     if (c/100) {
       ret += '0' + c/100;
       c = c%100;
     }
     if (c/10) {
       ret +=  '0' + c/10;
       c = c%10;
     }
     ret +=  '0' + c;
     return ret;
   }
}}}

Would you be likely to accept a patch that simply omits all the iostream-dependent API, if BOOST_NO_IOSTREAM is defined?

Is there a boost-friendly alternative to std::ostringstream?
"	Feature Requests	new	Boost 1.39.0	date_time	Boost 1.38.0	Problem		iostream BOOST_NO_IOSTREAM _STLP_NO_IOSTREAMS