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codecvt_helper.hpp - Hosted on DriveHQ Cloud IT Platform
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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\iostreams\detail\codecvt_helper.hpp
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// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) // (C) Copyright 2003-2007 Jonathan Turkanis // Distributed under 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/iostreams for documentation. // Contains the definition of the template codecvt_helper, useful for // defining specializations of std::codecvt where state_type != mbstate_t. // Compensates for the fact that some standard library implementations // do not derive the primiary codecvt template from locale::facet or // provide the correct member types and functions. // Usage: // // // In global namespace: // BOOST_IOSTREAMS_CODECVT_SPEC(mystate) // // // In user namespace: // template
// struct mycodecvt : codecvt_helper
{ ... }; // // // Or: // struct mycodecvt : codecvt_helper
{ ... }; // // Etc. #ifndef BOOST_IOSTREAMS_DETAIL_CODECVT_HELPER_HPP_INCLUDED #define BOOST_IOSTREAMS_DETAIL_CODECVT_HELPER_HPP_INCLUDED #if defined(_MSC_VER) && (_MSC_VER >= 1020) # pragma once #endif #include
// Put size_t in std, BOOST_MSVC, Dinkum. #include
#include
// min. #include
// size_t. #include
// locale, codecvt_base, codecvt. #include
//------------------Definition of traits--------------------------------------// namespace boost { namespace iostreams { namespace detail { #if !BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1) //-----------------------// template
struct codecvt_intern { typedef typename T::intern_type type; }; template
struct codecvt_extern { typedef typename T::extern_type type; }; #else // #if !BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1) //--------------// template
struct codecvt_intern { typedef typename T::from_type type; }; template
struct codecvt_extern { typedef typename T::to_type type; }; #endif // #if !BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1) //-------------// template
struct codecvt_state { typedef typename T::state_type type; }; } } } // End namespaces detail, iostreams, boost. //------------------Definition of codecvt_impl--------------------------------// #if defined(BOOST_IOSTREAMS_NO_PRIMARY_CODECVT_DEFINITION) || \ defined(BOOST_IOSTREAMS_EMPTY_PRIMARY_CODECVT_DEFINITION) || \ defined(BOOST_IOSTREAMS_NO_LOCALE) \ /**/ namespace boost { namespace iostreams { namespace detail { template
struct codecvt_impl : std::locale::facet, std::codecvt_base { public: typedef Intern intern_type; typedef Extern extern_type; typedef State state_type; codecvt_impl(std::size_t refs = 0) : std::locale::facet(refs) { } std::codecvt_base::result in( State& state, const Extern* first1, const Extern* last1, const Extern*& next1, Intern* first2, Intern* last2, Intern*& next2 ) const { return do_in(state, first1, last1, next1, first2, last2, next2); } std::codecvt_base::result out( State& state, const Intern* first1, const Intern* last1, const Intern*& next1, Extern* first2, Extern* last2, Extern*& next2 ) const { return do_out(state, first1, last1, next1, first2, last2, next2); } std::codecvt_base::result unshift(State& state, Extern* first2, Extern* last2, Extern*& next2) const { return do_unshift(state, first2, last2, next2); } bool always_noconv() const throw() { return do_always_noconv(); } int max_length() const throw() { return do_max_length(); } int encoding() const throw() { return do_encoding(); } int length( BOOST_IOSTREAMS_CODECVT_CV_QUALIFIER State& state, const Extern* first1, const Extern* last1, std::size_t len2 ) const throw() { return do_length(state, first1, last1, len2); } protected: std::codecvt_base::result virtual do_in( State&, const Extern*, const Extern*, const Extern*&, Intern*, Intern*, Intern*& ) const { return std::codecvt_base::noconv; } std::codecvt_base::result virtual do_out( State&, const Intern*, const Intern*, const Intern*&, Extern*, Extern*, Extern*& ) const { return std::codecvt_base::noconv; } std::codecvt_base::result virtual do_unshift( State& state, Extern* first2, Extern* last2, Extern*& next2 ) const { return std::codecvt_base::ok; } virtual bool do_always_noconv() const throw() { return true; } virtual int do_max_length() const throw() { return 1; } virtual int do_encoding() const throw() { return 1; } virtual int do_length( BOOST_IOSTREAMS_CODECVT_CV_QUALIFIER State& state, const Extern* first1, const Extern* last1, std::size_t len2 ) const throw() { return (std::min)(static_cast
(last1 - first1), len2); } }; } } } // End namespaces detail, iostreams, boost. #endif // no primary codecvt definition, empty definition. //------------------Definition of BOOST_IOSTREAMS_CODECVT_SPEC----------------// #if defined(BOOST_IOSTREAMS_NO_PRIMARY_CODECVT_DEFINITION) || \ defined(BOOST_IOSTREAMS_EMPTY_PRIMARY_CODECVT_DEFINITION) \ /**/ # ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION # define BOOST_IOSTREAMS_CODECVT_SPEC(state) \ namespace std { \ template
\ class codecvt
\ : public ::boost::iostreams::detail::codecvt_impl< \ Intern, Extern, state \ > \ { \ public: \ codecvt(std::size_t refs = 0) \ : ::boost::iostreams::detail::codecvt_impl< \ Intern, Extern, state \ >(refs) \ { } \ static std::locale::id id; \ }; \ template
\ std::locale::id codecvt
::id; \ } \ /**/ # else # define BOOST_IOSTREAMS_CODECVT_SPEC(state) \ namespace std { \ template<> \ class codecvt
\ : public ::boost::iostreams::detail::codecvt_impl< \ wchar_t, char, state \ > \ { \ public: \ codecvt(std::size_t refs = 0) \ : ::boost::iostreams::detail::codecvt_impl< \ wchar_t, char, state \ >(refs) \ { } \ static std::locale::id id; \ }; \ template<> \ std::locale::id codecvt
::id; \ } \ /**/ # endif #else # define BOOST_IOSTREAMS_CODECVT_SPEC(state) #endif // no primary codecvt definition, or empty definition. namespace boost { namespace iostreams { namespace detail { //------------------Definition of codecvt_helper------------------------------// template
struct codecvt_helper : std::codecvt
{ typedef Intern intern_type; typedef Extern extern_type; typedef State state_type; codecvt_helper(std::size_t refs = 0) #if !defined(BOOST_IOSTREAMS_NO_CODECVT_CTOR_FROM_SIZE_T) : std::codecvt
(refs) #else : std::codecvt
() #endif { } #ifdef BOOST_IOSTREAMS_NO_CODECVT_MAX_LENGTH int max_length() const throw() { return do_max_length(); } protected: virtual int do_max_length() const throw() { return 1; } #endif }; } } } // End namespaces detail, iostreams, boost. #endif // #ifndef BOOST_IOSTREAMS_DETAIL_CODECVT_HELPER_HPP_INCLUDED
codecvt_helper.hpp
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