1 #ifndef BOOST_ARCHIVE_CODECVT_NULL_HPP 2 #define BOOST_ARCHIVE_CODECVT_NULL_HPP 3 4 // MS compatible compilers support #pragma once 5 #if defined(_MSC_VER) 6 # pragma once 7 #endif 8 9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 10 // codecvt_null.hpp: 11 12 // (C) Copyright 2004 Robert Ramey - http://www.rrsd.com . 13 // Use, modification and distribution is subject to the Boost Software 14 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 15 // http://www.boost.org/LICENSE_1_0.txt) 16 17 // See http://www.boost.org for updates, documentation, and revision history. 18 19 #include <locale> 20 #include <cstddef> // NULL, size_t 21 #include <cwchar> // for mbstate_t 22 #include <boost/config.hpp> 23 #include <boost/archive/detail/auto_link_archive.hpp> 24 #include <boost/archive/detail/abi_prefix.hpp> // must be the last header 25 26 #if defined(BOOST_NO_STDC_NAMESPACE) 27 namespace std { 28 // For STLport on WinCE, BOOST_NO_STDC_NAMESPACE can get defined if STLport is putting symbols in its own namespace. 29 // In the case of codecvt, however, this does not mean that codecvt is in the global namespace (it will be in STLport's namespace) 30 # if !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) 31 using ::codecvt; 32 # endif 33 using ::mbstate_t; 34 using ::size_t; 35 } // namespace 36 #endif 37 38 #ifdef BOOST_MSVC 39 # pragma warning(push) 40 # pragma warning(disable : 4511 4512) 41 #endif 42 43 namespace boost { 44 namespace archive { 45 46 template<class Ch> 47 class codecvt_null; 48 49 template<> 50 class codecvt_null<char> : public std::codecvt<char, char, std::mbstate_t> 51 { do_always_noconv() const52 virtual bool do_always_noconv() const throw() { 53 return true; 54 } 55 public: codecvt_null(std::size_t no_locale_manage=0)56 explicit codecvt_null(std::size_t no_locale_manage = 0) : 57 std::codecvt<char, char, std::mbstate_t>(no_locale_manage) 58 {} 59 }; 60 61 template<> 62 class codecvt_null<wchar_t> : public std::codecvt<wchar_t, char, std::mbstate_t> 63 { 64 virtual BOOST_WARCHIVE_DECL std::codecvt_base::result 65 do_out( 66 std::mbstate_t & state, 67 const wchar_t * first1, 68 const wchar_t * last1, 69 const wchar_t * & next1, 70 char * first2, 71 char * last2, 72 char * & next2 73 ) const; 74 virtual BOOST_WARCHIVE_DECL std::codecvt_base::result 75 do_in( 76 std::mbstate_t & state, 77 const char * first1, 78 const char * last1, 79 const char * & next1, 80 wchar_t * first2, 81 wchar_t * last2, 82 wchar_t * & next2 83 ) const; do_encoding() const84 virtual int do_encoding( ) const throw( ){ 85 return sizeof(wchar_t) / sizeof(char); 86 } do_max_length() const87 virtual int do_max_length( ) const throw( ){ 88 return do_encoding(); 89 } 90 public: codecvt_null(std::size_t no_locale_manage=0)91 explicit codecvt_null(std::size_t no_locale_manage = 0) : 92 std::codecvt<wchar_t, char, std::mbstate_t>(no_locale_manage) 93 {} 94 }; 95 96 } // namespace archive 97 } // namespace boost 98 99 #ifdef BOOST_MSVC 100 # pragma warning(pop) 101 #endif 102 #include <boost/archive/detail/abi_suffix.hpp> // pop pragmas 103 104 #endif //BOOST_ARCHIVE_CODECVT_NULL_HPP 105