ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/regex/v4/iterator_category.hpp b/include/ndnboost/regex/v4/iterator_category.hpp
new file mode 100644
index 0000000..790417b
--- /dev/null
+++ b/include/ndnboost/regex/v4/iterator_category.hpp
@@ -0,0 +1,91 @@
+/*
+ *
+ * Copyright (c) 2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to 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)
+ *
+ */
+
+ /*
+ * LOCATION: see http://www.boost.org for most recent version.
+ * FILE regex_match.hpp
+ * VERSION see <ndnboost/version.hpp>
+ * DESCRIPTION: Iterator traits for selecting an iterator type as
+ * an integral constant expression.
+ */
+
+
+#ifndef NDNBOOST_REGEX_ITERATOR_CATEGORY_HPP
+#define NDNBOOST_REGEX_ITERATOR_CATEGORY_HPP
+
+#include <iterator>
+#include <ndnboost/type_traits/is_convertible.hpp>
+#include <ndnboost/type_traits/is_pointer.hpp>
+
+namespace ndnboost{
+namespace detail{
+
+template <class I>
+struct is_random_imp
+{
+#ifndef NDNBOOST_NO_STD_ITERATOR_TRAITS
+private:
+ typedef typename std::iterator_traits<I>::iterator_category cat;
+public:
+ NDNBOOST_STATIC_CONSTANT(bool, value = (::ndnboost::is_convertible<cat*, std::random_access_iterator_tag*>::value));
+#else
+ NDNBOOST_STATIC_CONSTANT(bool, value = false);
+#endif
+};
+
+template <class I>
+struct is_random_pointer_imp
+{
+ NDNBOOST_STATIC_CONSTANT(bool, value = true);
+};
+
+template <bool is_pointer_type>
+struct is_random_imp_selector
+{
+ template <class I>
+ struct rebind
+ {
+ typedef is_random_imp<I> type;
+ };
+};
+
+template <>
+struct is_random_imp_selector<true>
+{
+ template <class I>
+ struct rebind
+ {
+ typedef is_random_pointer_imp<I> type;
+ };
+};
+
+}
+
+template <class I>
+struct is_random_access_iterator
+{
+private:
+ typedef detail::is_random_imp_selector< ::ndnboost::is_pointer<I>::value> selector;
+ typedef typename selector::template rebind<I> bound_type;
+ typedef typename bound_type::type answer;
+public:
+ NDNBOOST_STATIC_CONSTANT(bool, value = answer::value);
+};
+
+#ifndef NDNBOOST_NO_INCLASS_MEMBER_INITIALIZATION
+template <class I>
+const bool is_random_access_iterator<I>::value;
+#endif
+
+}
+
+#endif
+