Chris@16: // ----------------------------------------------------------------------------
Chris@16: // free_funcs.hpp :  implementation of the free functions of boost::format
Chris@16: // ----------------------------------------------------------------------------
Chris@16: 
Chris@16: //  Copyright Samuel Krempp 2003. Use, modification, and distribution are
Chris@16: //  subject to the Boost Software License, Version 1.0. (See accompanying
Chris@16: //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: //  See http://www.boost.org/libs/format for library home page
Chris@16: 
Chris@16: // ----------------------------------------------------------------------------
Chris@16: 
Chris@16: #ifndef BOOST_FORMAT_FUNCS_HPP
Chris@16: #define BOOST_FORMAT_FUNCS_HPP
Chris@16: 
Chris@16: #include <boost/format/format_class.hpp>
Chris@16: #include <boost/throw_exception.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16:     template<class Ch, class Tr, class Alloc> inline 
Chris@16:     std::basic_string<Ch, Tr, Alloc> str(const basic_format<Ch, Tr, Alloc>& f) {
Chris@16:         // adds up all pieces of strings and converted items, and return the formatted string
Chris@16:         return f.str();
Chris@16:     }
Chris@16:     namespace io {
Chris@16:          using ::boost::str; // keep compatibility with when it was defined in this N.S.
Chris@16:     }   // - namespace io
Chris@16: 
Chris@16: #ifndef  BOOST_NO_TEMPLATE_STD_STREAM
Chris@16:         template<class Ch, class Tr, class Alloc>
Chris@16:         std::basic_ostream<Ch, Tr> & 
Chris@16:         operator<<( std::basic_ostream<Ch, Tr> & os,
Chris@16:                     const basic_format<Ch, Tr, Alloc>& f)
Chris@16: #else
Chris@16:         template<class Ch, class Tr, class Alloc>
Chris@16:         std::ostream & 
Chris@16:         operator<<( std::ostream & os,
Chris@16:                     const basic_format<Ch, Tr, Alloc>& f)
Chris@16: #endif
Chris@16:         // effect: "return os << str(f);" but we can do it faster
Chris@16:     {
Chris@16:         typedef boost::basic_format<Ch, Tr, Alloc>   format_t;
Chris@16:         if(f.items_.size()==0) 
Chris@16:             os << f.prefix_;
Chris@16:         else {
Chris@16:             if(f.cur_arg_ < f.num_args_)
Chris@16:                 if( f.exceptions() & io::too_few_args_bit )
Chris@16:                     // not enough variables supplied
Chris@16:                     boost::throw_exception(io::too_few_args(f.cur_arg_, f.num_args_)); 
Chris@16:             if(f.style_ & format_t::special_needs) 
Chris@16:                 os << f.str();
Chris@16:             else {
Chris@16:                 // else we dont have to count chars output, so we dump directly to os :
Chris@16:                 os << f.prefix_;
Chris@16:                 for(unsigned long i=0; i<f.items_.size(); ++i) {
Chris@16:                     const typename format_t::format_item_t& item = f.items_[i];
Chris@16:                     os << item.res_;
Chris@16:                     os << item.appendix_;
Chris@16:                 }
Chris@16:             }
Chris@16:         }
Chris@16:         f.dumped_=true;
Chris@16:         return os;
Chris@16:     }
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: 
Chris@16: #endif // BOOST_FORMAT_FUNCS_HPP