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