diff options
author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2003-06-27T13·41+0000 |
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committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2003-06-27T13·41+0000 |
commit | bb03c45ca03e038c8b74fc1410f48d02ade4c59b (patch) | |
tree | 131afdf9d4b308e4d1fff6089f2ab1923c862e02 /boost/format/free_funcs.hpp | |
parent | d4c3edfaba91a0e5e1e9528749e5b1e178511a6d (diff) |
* Added the Boost format library which provides a safe printf
replacement.
Diffstat (limited to 'boost/format/free_funcs.hpp')
-rw-r--r-- | boost/format/free_funcs.hpp | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/boost/format/free_funcs.hpp b/boost/format/free_funcs.hpp new file mode 100644 index 000000000000..d552e8baa2af --- /dev/null +++ b/boost/format/free_funcs.hpp @@ -0,0 +1,72 @@ +// -*- C++ -*- +// Boost general library 'format' --------------------------- +// See http://www.boost.org for updates, documentation, and revision history. + +// (C) Samuel Krempp 2001 +// krempp@crans.ens-cachan.fr +// Permission to copy, use, modify, sell and +// distribute this software is granted provided this copyright notice appears +// in all copies. This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. + +// ideas taken from Rüdiger Loos's format class +// and Karl Nelson's ofstream (also took its parsing code as basis for printf parsing) + +// ------------------------------------------------------------------------------ +// free_funcs.hpp : implementation of the free functions declared in namespace format +// ------------------------------------------------------------------------------ + +#ifndef BOOST_FORMAT_FUNCS_HPP +#define BOOST_FORMAT_FUNCS_HPP + +#include "boost/format/format_class.hpp" +//#include "boost/throw_exception.hpp" + +namespace boost { + +namespace io { + template<class Ch, class Tr> inline + std::basic_string<Ch, Tr> str(const basic_format<Ch, Tr>& f) + // adds up all pieces of strings and converted items, and return the formatted string + { + return f.str(); + } +} // - namespace io + +template< class Ch, class Tr> +BOOST_IO_STD basic_ostream<Ch, Tr>& +operator<<( BOOST_IO_STD basic_ostream<Ch, Tr>& os, + const boost::basic_format<Ch, Tr>& f) + // effect: "return os << str(f);" but we can try to do it faster +{ + typedef boost::basic_format<Ch, Tr> 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 ) + boost::throw_exception(io::too_few_args()); // not enough variables have been supplied ! + 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 |