1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) 2 // (C) Copyright 2003-2007 Jonathan Turkanis 3 // Distributed under the Boost Software License, Version 1.0. (See accompanying 4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) 5 6 // See http://www.boost.org/libs/iostreams for documentation. 7 8 #ifndef BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED 9 #define BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED 10 11 #if defined(_MSC_VER) && (_MSC_VER >= 1020) 12 # pragma once 13 #endif 14 15 #include <boost/type_traits/is_same.hpp> 16 17 namespace boost { namespace iostreams { namespace detail { 18 19 template<bool IsSame> 20 struct translate_int_type_impl; 21 22 // 23 // Template name: translate_char. 24 // Description: Translates a character or an end-of-file indicator from the 25 // int_type of one character traits type to the int_type of another. 26 // 27 template<typename SourceTr, typename TargetTr> 28 typename TargetTr::int_type translate_int_type(typename SourceTr::int_type c)29translate_int_type(typename SourceTr::int_type c) 30 { 31 typedef translate_int_type_impl<is_same<SourceTr, TargetTr>::value> impl; 32 return impl::template inner<SourceTr, TargetTr>::translate(c); 33 } 34 35 //----------------------------------------------------------------------------// 36 37 template<> 38 struct translate_int_type_impl<true> { 39 template<typename SourceTr, typename TargetTr> 40 struct inner { 41 static typename TargetTr::int_type translateboost::iostreams::detail::translate_int_type_impl::inner42 translate(typename SourceTr::int_type c) { return c; } 43 }; 44 }; 45 46 template<> 47 struct translate_int_type_impl<false> { 48 template<typename SourceTr, typename TargetTr> 49 struct inner { 50 static typename TargetTr::int_type translateboost::iostreams::detail::translate_int_type_impl::inner51 translate(typename SourceTr::int_type c) 52 { 53 return SourceTr::eq_int_type(SourceTr::eof()) ? 54 TargetTr::eof() : 55 TargetTr::to_int_type(SourceTr::to_char_type(c)); 56 } 57 }; 58 }; 59 60 } } } // End namespaces detail, iostreams, boost. 61 62 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED 63