ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/concepts.hpp b/include/ndnboost/iostreams/concepts.hpp
new file mode 100644
index 0000000..de734ec
--- /dev/null
+++ b/include/ndnboost/iostreams/concepts.hpp
@@ -0,0 +1,129 @@
+// (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.
+
+#ifndef NDNBOOST_IOSTREAMS_CONCEPTS_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_CONCEPTS_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <ndnboost/config.hpp> // NDNBOOST_MSVC
+#include <ndnboost/detail/workaround.hpp>
+#include <ndnboost/iostreams/categories.hpp>
+#include <ndnboost/iostreams/detail/default_arg.hpp>
+#include <ndnboost/iostreams/detail/ios.hpp> // openmode.
+#include <ndnboost/iostreams/positioning.hpp>
+#include <ndnboost/static_assert.hpp>
+#include <ndnboost/type_traits/is_convertible.hpp>
+
+namespace ndnboost { namespace iostreams {
+
+//--------------Definitions of helper templates for device concepts-----------//
+
+template<typename Mode, typename Ch = NDNBOOST_IOSTREAMS_DEFAULT_ARG(char)>
+struct device {
+ typedef Ch char_type;
+ struct category
+ : Mode,
+ device_tag,
+ closable_tag,
+ localizable_tag
+ { };
+
+ void close()
+ {
+ using namespace detail;
+ NDNBOOST_STATIC_ASSERT((!is_convertible<Mode, two_sequence>::value));
+ }
+
+ void close(NDNBOOST_IOS::openmode)
+ {
+ using namespace detail;
+ NDNBOOST_STATIC_ASSERT((is_convertible<Mode, two_sequence>::value));
+ }
+
+ template<typename Locale>
+ void imbue(const Locale&) { }
+};
+
+template<typename Mode, typename Ch = NDNBOOST_IOSTREAMS_DEFAULT_ARG(wchar_t)>
+struct wdevice : device<Mode, Ch> { };
+
+typedef device<input> source;
+typedef wdevice<input> wsource;
+typedef device<output> sink;
+typedef wdevice<output> wsink;
+
+//--------------Definitions of helper templates for simple filter concepts----//
+
+template<typename Mode, typename Ch = NDNBOOST_IOSTREAMS_DEFAULT_ARG(char)>
+struct filter {
+ typedef Ch char_type;
+ struct category
+ : Mode,
+ filter_tag,
+ closable_tag,
+ localizable_tag
+ { };
+
+ template<typename Device>
+ void close(Device&)
+ {
+ using namespace detail;
+ NDNBOOST_STATIC_ASSERT((!is_convertible<Mode, two_sequence>::value));
+ NDNBOOST_STATIC_ASSERT((!is_convertible<Mode, dual_use>::value));
+ }
+
+ template<typename Device>
+ void close(Device&, NDNBOOST_IOS::openmode)
+ {
+ using namespace detail;
+ NDNBOOST_STATIC_ASSERT(
+ (is_convertible<Mode, two_sequence>::value) ||
+ (is_convertible<Mode, dual_use>::value)
+ );
+ }
+
+ template<typename Locale>
+ void imbue(const Locale&) { }
+};
+
+template<typename Mode, typename Ch = NDNBOOST_IOSTREAMS_DEFAULT_ARG(wchar_t)>
+struct wfilter : filter<Mode, Ch> { };
+
+typedef filter<input> input_filter;
+typedef wfilter<input> input_wfilter;
+typedef filter<output> output_filter;
+typedef wfilter<output> output_wfilter;
+typedef filter<seekable> seekable_filter;
+typedef wfilter<seekable> seekable_wfilter;
+typedef filter<dual_use> dual_use_filter;
+typedef wfilter<dual_use> dual_use_wfilter;
+
+//------Definitions of helper templates for multi-character filter cncepts----//
+
+template<typename Mode, typename Ch = char>
+struct multichar_filter : filter<Mode, Ch> {
+ struct category : filter<Mode, Ch>::category, multichar_tag { };
+};
+
+template<typename Mode, typename Ch = wchar_t>
+struct multichar_wfilter : multichar_filter<Mode, Ch> { };
+
+typedef multichar_filter<input> multichar_input_filter;
+typedef multichar_wfilter<input> multichar_input_wfilter;
+typedef multichar_filter<output> multichar_output_filter;
+typedef multichar_wfilter<output> multichar_output_wfilter;
+typedef multichar_filter<dual_use> multichar_dual_use_filter;
+typedef multichar_wfilter<dual_use> multichar_dual_use_wfilter;
+
+//----------------------------------------------------------------------------//
+
+} } // End namespaces iostreams, boost.
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_CONCEPTS_HPP_INCLUDED