[857] | 1 | // (C) Copyright Jonathan Turkanis 2003.
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| 2 | // Distributed under the Boost Software License, Version 1.0. (See accompanying
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| 3 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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| 4 |
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| 5 | // See http://www.boost.org/libs/iostreams for documentation.
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| 6 |
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| 7 | #ifndef BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED
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| 8 | #define BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED
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| 9 |
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| 10 | #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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| 11 | # pragma once
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| 12 | #endif
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| 13 |
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| 14 | #include <boost/type_traits/is_same.hpp>
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| 15 |
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| 16 | namespace boost { namespace iostreams { namespace detail {
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| 17 |
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| 18 | template<bool IsSame>
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| 19 | struct translate_int_type_impl;
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| 20 |
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| 21 | //
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| 22 | // Template name: translate_char.
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| 23 | // Description: Translates a character or an end-of-file indicator from the
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| 24 | // int_type of one character traits type to the int_type of another.
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| 25 | //
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| 26 | template<typename SourceTr, typename TargetTr>
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| 27 | typename TargetTr::int_type
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| 28 | translate_int_type(typename SourceTr::int_type c)
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| 29 | {
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| 30 | typedef translate_int_type_impl<is_same<SourceTr, TargetTr>::value> impl;
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| 31 | return impl::template inner<SourceTr, TargetTr>::translate(c);
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| 32 | }
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| 33 |
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| 34 | //----------------------------------------------------------------------------//
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| 35 |
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| 36 | template<>
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| 37 | struct translate_int_type_impl<true> {
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| 38 | template<typename SourceTr, typename TargetTr>
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| 39 | struct inner {
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| 40 | static typename TargetTr::int_type
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| 41 | translate(typename SourceTr::int_type c) { return c; }
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| 42 | };
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| 43 | };
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| 44 |
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| 45 | template<>
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| 46 | struct translate_int_type_impl<false> {
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| 47 | template<typename SourceTr, typename TargetTr>
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| 48 | struct inner {
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| 49 | static typename TargetTr::int_type
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| 50 | translate(typename SourceTr::int_type c)
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| 51 | {
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| 52 | return SourceTr::eq_int_type(SourceTr::eof()) ?
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| 53 | TargetTr::eof() :
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| 54 | TargetTr::to_int_type(SourceTr::to_char_type(c));
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| 55 | }
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| 56 | };
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| 57 | };
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| 58 |
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| 59 | } } } // End namespaces detail, iostreams, boost.
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| 60 |
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| 61 | #endif // #ifndef BOOST_IOSTREAMS_DETAIL_TRANSLATE_INT_TYPE_HPP_INCLUDED
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