// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
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// (C) Copyright 2003-2007 Jonathan Turkanis
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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// See http://www.boost.org/libs/iostreams for documentation.
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#ifndef BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED
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#define BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace iostreams { namespace detail {
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template<bool IsSame>
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struct translate_int_type_impl;
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//
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// Template name: translate_char.
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// Description: Translates a character or an end-of-file indicator from the
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// int_type of one character traits type to the int_type of another.
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//
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template<typename SourceTr, typename TargetTr>
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typename TargetTr::int_type
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translate_int_type(typename SourceTr::int_type c)
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{
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typedef translate_int_type_impl<is_same<SourceTr, TargetTr>::value> impl;
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return impl::template inner<SourceTr, TargetTr>::translate(c);
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}
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//----------------------------------------------------------------------------//
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template<>
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struct translate_int_type_impl<true> {
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template<typename SourceTr, typename TargetTr>
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struct inner {
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static typename TargetTr::int_type
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translate(typename SourceTr::int_type c) { return c; }
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};
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};
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template<>
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struct translate_int_type_impl<false> {
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template<typename SourceTr, typename TargetTr>
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struct inner {
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static typename TargetTr::int_type
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translate(typename SourceTr::int_type c)
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{
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return SourceTr::eq_int_type(SourceTr::eof()) ?
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TargetTr::eof() :
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TargetTr::to_int_type(SourceTr::to_char_type(c));
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}
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};
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};
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} } } // End namespaces detail, iostreams, boost.
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#endif // #ifndef BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED
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