| Jeff Thompson | 86b6d64 | 2013-10-17 15:01:56 -0700 | [diff] [blame^] | 1 | // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) |
| 2 | // (C) Copyright 2005-2007 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 | namespace ndnboost { namespace iostreams { |
| 9 | |
| 10 | namespace detail { |
| 11 | |
| 12 | template<typename T> |
| 13 | struct close_impl; |
| 14 | |
| 15 | } // End namespace detail. |
| 16 | |
| 17 | template<typename T> |
| 18 | void close(T& t) { detail::close_all(t); } |
| 19 | |
| 20 | template<typename T> |
| 21 | void close(T& t, NDNBOOST_IOS::openmode which) |
| 22 | { |
| 23 | typedef typename detail::unwrapped_type<T>::type unwrapped; |
| 24 | detail::close_impl<T>::inner<unwrapped>::close(detail::unwrap(t), which); |
| 25 | } |
| 26 | |
| 27 | template<typename T, typename Sink> |
| 28 | void close(T& t, Sink& snk, NDNBOOST_IOS::openmode which) |
| 29 | { |
| 30 | typedef typename detail::unwrapped_type<T>::type unwrapped; |
| 31 | detail::close_impl<T>::inner<unwrapped>::close(detail::unwrap(t), snk, which); |
| 32 | } |
| 33 | |
| 34 | namespace detail { |
| 35 | |
| 36 | //------------------Definition of close_impl----------------------------------// |
| 37 | |
| 38 | template<typename T> |
| 39 | struct close_tag { |
| 40 | typedef typename category_of<T>::type category; |
| 41 | typedef typename |
| 42 | mpl::eval_if< |
| 43 | is_convertible<category, closable_tag>, |
| 44 | mpl::if_< |
| 45 | mpl::or_< |
| 46 | is_convertible<category, two_sequence>, |
| 47 | is_convertible<category, dual_use> |
| 48 | >, |
| 49 | two_sequence, |
| 50 | closable_tag |
| 51 | >, |
| 52 | mpl::identity<any_tag> |
| 53 | >::type type; |
| 54 | }; |
| 55 | |
| 56 | template<typename T> |
| 57 | struct close_impl |
| 58 | : mpl::if_< |
| 59 | is_custom<T>, |
| 60 | operations<T>, |
| 61 | close_impl<NDNBOOST_DEDUCED_TYPENAME close_tag<T>::type> |
| 62 | >::type |
| 63 | { }; |
| 64 | |
| 65 | template<> |
| 66 | struct close_impl<any_tag> { |
| 67 | template<typename T> |
| 68 | struct inner { |
| 69 | static void close(T& t, NDNBOOST_IOS::openmode which) |
| 70 | { |
| 71 | if (which == NDNBOOST_IOS::out) |
| 72 | iostreams::flush(t); |
| 73 | } |
| 74 | |
| 75 | template<typename Sink> |
| 76 | static void close(T& t, Sink& snk, NDNBOOST_IOS::openmode which) |
| 77 | { |
| 78 | if (which == NDNBOOST_IOS::out) { |
| 79 | non_blocking_adapter<Sink> nb(snk); |
| 80 | iostreams::flush(t, nb); |
| 81 | } |
| 82 | } |
| 83 | }; |
| 84 | }; |
| 85 | |
| 86 | template<> |
| 87 | struct close_impl<closable_tag> { |
| 88 | template<typename T> |
| 89 | struct inner { |
| 90 | static void close(T& t, NDNBOOST_IOS::openmode which) |
| 91 | { |
| 92 | typedef typename category_of<T>::type category; |
| 93 | const bool in = is_convertible<category, input>::value && |
| 94 | !is_convertible<category, output>::value; |
| 95 | if (in == (which == NDNBOOST_IOS::in)) |
| 96 | t.close(); |
| 97 | } |
| 98 | template<typename Sink> |
| 99 | static void close(T& t, Sink& snk, NDNBOOST_IOS::openmode which) |
| 100 | { |
| 101 | typedef typename category_of<T>::type category; |
| 102 | const bool in = is_convertible<category, input>::value && |
| 103 | !is_convertible<category, output>::value; |
| 104 | if (in == (which == NDNBOOST_IOS::in)) { |
| 105 | non_blocking_adapter<Sink> nb(snk); |
| 106 | t.close(nb); |
| 107 | } |
| 108 | } |
| 109 | }; |
| 110 | }; |
| 111 | |
| 112 | template<> |
| 113 | struct close_impl<two_sequence> { |
| 114 | template<typename T> |
| 115 | struct inner { |
| 116 | static void close(T& t, NDNBOOST_IOS::openmode which) { t.close(which); } |
| 117 | |
| 118 | template<typename Sink> |
| 119 | static void close(T& t, Sink& snk, NDNBOOST_IOS::openmode which) |
| 120 | { |
| 121 | non_blocking_adapter<Sink> nb(snk); |
| 122 | t.close(nb, which); |
| 123 | } |
| 124 | }; |
| 125 | }; |
| 126 | |
| 127 | } // End namespace detail. |
| 128 | |
| 129 | } } // End namespaces iostreams, boost. |