sl@0: #ifndef BOOST_ARCHIVE_CODECVT_NULL_HPP
sl@0: #define BOOST_ARCHIVE_CODECVT_NULL_HPP
sl@0: 
sl@0: // MS compatible compilers support #pragma once
sl@0: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
sl@0: # pragma once
sl@0: #endif
sl@0: 
sl@0: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
sl@0: // codecvt_null.hpp:
sl@0: 
sl@0: // (C) Copyright 2004 Robert Ramey - http://www.rrsd.com .
sl@0: // Use, modification and distribution is subject to the Boost Software
sl@0: // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: 
sl@0: //  See http://www.boost.org for updates, documentation, and revision history.
sl@0: 
sl@0: #include <locale>
sl@0: #include <cstddef>
sl@0: 
sl@0: #include <boost/config.hpp>
sl@0: 
sl@0: namespace std{
sl@0:     #if defined(__LIBCOMO__)
sl@0:         using ::mbstate_t;
sl@0:     #elif defined(__QNXNTO__)
sl@0:         using std::mbstate_t;
sl@0:     #elif defined(BOOST_DINKUMWARE_STDLIB) && BOOST_DINKUMWARE_STDLIB == 1
sl@0:         using ::mbstate_t;
sl@0:     #elif defined(__SGI_STL_PORT)
sl@0:     #elif defined(BOOST_NO_STDC_NAMESPACE)
sl@0:         using ::codecvt;
sl@0:         using ::mbstate_t;
sl@0:     #endif
sl@0: } // namespace std
sl@0: 
sl@0: namespace boost {
sl@0: namespace archive {
sl@0: 
sl@0: template<class Ch>
sl@0: class codecvt_null;
sl@0: 
sl@0: template<>
sl@0: class codecvt_null<char> : public std::codecvt<char, char, std::mbstate_t>
sl@0: {
sl@0:     virtual bool do_always_noconv() const throw() {
sl@0:         return true;
sl@0:     }
sl@0: public:
sl@0:     explicit codecvt_null(std::size_t no_locale_manage = 0) :
sl@0:         std::codecvt<char, char, std::mbstate_t>(no_locale_manage)
sl@0:     {}
sl@0: };
sl@0: 
sl@0: template<>
sl@0: class codecvt_null<wchar_t> : public std::codecvt<wchar_t, char, std::mbstate_t>
sl@0: {
sl@0:     virtual std::codecvt_base::result
sl@0:     do_out(
sl@0:         std::mbstate_t & state,
sl@0:         const wchar_t * first1,
sl@0:         const wchar_t * last1,
sl@0:         const wchar_t * & next1,
sl@0:         char * first2,
sl@0:         char * last2,
sl@0:         char * & next2
sl@0:     ) const;
sl@0:     virtual std::codecvt_base::result
sl@0:     do_in(
sl@0:         std::mbstate_t & state,
sl@0:         const char * first1,
sl@0:         const char * last1,
sl@0:         const char * & next1,
sl@0:         wchar_t * first2,
sl@0:         wchar_t * last2,
sl@0:         wchar_t * & next2
sl@0:     ) const;
sl@0:     virtual int do_encoding( ) const throw( ){
sl@0:         return sizeof(wchar_t) / sizeof(char);
sl@0:     }
sl@0:     virtual int do_max_length( ) const throw( ){
sl@0:         return do_encoding();
sl@0:     }
sl@0: };
sl@0: 
sl@0: } // namespace archive
sl@0: } // namespace boost
sl@0: 
sl@0: #endif //BOOST_ARCHIVE_CODECVT_NULL_HPP