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73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
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// -*- C++ -*-
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// Boost general library 'format' ---------------------------
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// See http://www.boost.org for updates, documentation, and revision history.
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// (C) Samuel Krempp 2001
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// krempp@crans.ens-cachan.fr
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// Permission to copy, use, modify, sell and
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// distribute this software is granted provided this copyright notice appears
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// in all copies. This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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// ideas taken from R<>diger Loos's format class
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// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing)
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// ------------------------------------------------------------------------------
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// free_funcs.hpp : implementation of the free functions declared in namespace format
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// ------------------------------------------------------------------------------
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#ifndef BOOST_FORMAT_FUNCS_HPP
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#define BOOST_FORMAT_FUNCS_HPP
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#include "boost/format/format_class.hpp"
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//#include "boost/throw_exception.hpp"
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namespace boost {
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namespace io {
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template<class Ch, class Tr> inline
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std::basic_string<Ch, Tr> str(const basic_format<Ch, Tr>& f)
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// adds up all pieces of strings and converted items, and return the formatted string
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{
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return f.str();
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}
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} // - namespace io
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template< class Ch, class Tr>
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BOOST_IO_STD basic_ostream<Ch, Tr>&
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operator<<( BOOST_IO_STD basic_ostream<Ch, Tr>& os,
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const boost::basic_format<Ch, Tr>& f)
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// effect: "return os << str(f);" but we can try to do it faster
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{
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typedef boost::basic_format<Ch, Tr> format_t;
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if(f.items_.size()==0)
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os << f.prefix_;
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else {
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if(f.cur_arg_ < f.num_args_)
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if( f.exceptions() & io::too_few_args_bit )
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boost::throw_exception(io::too_few_args()); // not enough variables have been supplied !
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if(f.style_ & format_t::special_needs)
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os << f.str();
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else {
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// else we dont have to count chars output, so we dump directly to os :
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os << f.prefix_;
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for(unsigned long i=0; i<f.items_.size(); ++i)
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{
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const typename format_t::format_item_t& item = f.items_[i];
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os << item.res_;
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os << item.appendix_;
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}
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}
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}
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f.dumped_=true;
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return os;
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}
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} // namespace boost
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#endif // BOOST_FORMAT_FUNCS_HPP
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