ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/regex/v4/c_regex_traits.hpp b/include/ndnboost/regex/v4/c_regex_traits.hpp
new file mode 100644
index 0000000..62add91
--- /dev/null
+++ b/include/ndnboost/regex/v4/c_regex_traits.hpp
@@ -0,0 +1,211 @@
+/*
+ *
+ * Copyright (c) 2004
+ * 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         c_regex_traits.hpp
+  *   VERSION      see <ndnboost/version.hpp>
+  *   DESCRIPTION: Declares regular expression traits class that wraps the global C locale.
+  */
+
+#ifndef NDNBOOST_C_REGEX_TRAITS_HPP_INCLUDED
+#define NDNBOOST_C_REGEX_TRAITS_HPP_INCLUDED
+
+#ifndef NDNBOOST_REGEX_CONFIG_HPP
+#include <ndnboost/regex/config.hpp>
+#endif
+#ifndef NDNBOOST_REGEX_WORKAROUND_HPP
+#include <ndnboost/regex/v4/regex_workaround.hpp>
+#endif
+
+#include <cctype>
+
+#ifdef NDNBOOST_NO_STDC_NAMESPACE
+namespace std{
+   using ::strlen; using ::tolower;
+}
+#endif
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+#  include NDNBOOST_ABI_PREFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace ndnboost{
+
+template <class charT>
+struct c_regex_traits;
+
+template<>
+struct NDNBOOST_REGEX_DECL c_regex_traits<char>
+{
+   c_regex_traits(){}
+   typedef char char_type;
+   typedef std::size_t size_type;
+   typedef std::string string_type;
+   struct locale_type{};
+   typedef ndnboost::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::strlen)(p); 
+   }
+
+   char translate(char c) const 
+   { 
+      return c; 
+   }
+   char translate_nocase(char c) const 
+   { 
+      return static_cast<char>((std::tolower)(static_cast<unsigned char>(c))); 
+   }
+
+   static string_type NDNBOOST_REGEX_CALL transform(const char* p1, const char* p2);
+   static string_type NDNBOOST_REGEX_CALL transform_primary(const char* p1, const char* p2);
+
+   static char_class_type NDNBOOST_REGEX_CALL lookup_classname(const char* p1, const char* p2);
+   static string_type NDNBOOST_REGEX_CALL lookup_collatename(const char* p1, const char* p2);
+
+   static bool NDNBOOST_REGEX_CALL isctype(char, char_class_type);
+   static int NDNBOOST_REGEX_CALL value(char, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#ifndef NDNBOOST_NO_WREGEX
+template<>
+struct NDNBOOST_REGEX_DECL c_regex_traits<wchar_t>
+{
+   c_regex_traits(){}
+   typedef wchar_t char_type;
+   typedef std::size_t size_type;
+   typedef std::wstring string_type;
+   struct locale_type{};
+   typedef ndnboost::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::wcslen)(p); 
+   }
+
+   wchar_t translate(wchar_t c) const 
+   { 
+      return c; 
+   }
+   wchar_t translate_nocase(wchar_t c) const 
+   { 
+      return (std::towlower)(c); 
+   }
+
+   static string_type NDNBOOST_REGEX_CALL transform(const wchar_t* p1, const wchar_t* p2);
+   static string_type NDNBOOST_REGEX_CALL transform_primary(const wchar_t* p1, const wchar_t* p2);
+
+   static char_class_type NDNBOOST_REGEX_CALL lookup_classname(const wchar_t* p1, const wchar_t* p2);
+   static string_type NDNBOOST_REGEX_CALL lookup_collatename(const wchar_t* p1, const wchar_t* p2);
+
+   static bool NDNBOOST_REGEX_CALL isctype(wchar_t, char_class_type);
+   static int NDNBOOST_REGEX_CALL value(wchar_t, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#ifdef NDNBOOST_REGEX_HAS_OTHER_WCHAR_T
+//
+// Provide an unsigned short version as well, so the user can link to this
+// no matter whether they build with /Zc:wchar_t or not (MSVC specific).
+//
+template<>
+struct NDNBOOST_REGEX_DECL c_regex_traits<unsigned short>
+{
+   c_regex_traits(){}
+   typedef unsigned short char_type;
+   typedef std::size_t size_type;
+   typedef std::basic_string<unsigned short> string_type;
+   struct locale_type{};
+   typedef ndnboost::uint32_t char_class_type;
+
+   static size_type length(const char_type* p) 
+   { 
+      return (std::wcslen)((const wchar_t*)p); 
+   }
+
+   unsigned short translate(unsigned short c) const 
+   { 
+      return c; 
+   }
+   unsigned short translate_nocase(unsigned short c) const 
+   { 
+      return (std::towlower)((wchar_t)c); 
+   }
+
+   static string_type NDNBOOST_REGEX_CALL transform(const unsigned short* p1, const unsigned short* p2);
+   static string_type NDNBOOST_REGEX_CALL transform_primary(const unsigned short* p1, const unsigned short* p2);
+
+   static char_class_type NDNBOOST_REGEX_CALL lookup_classname(const unsigned short* p1, const unsigned short* p2);
+   static string_type NDNBOOST_REGEX_CALL lookup_collatename(const unsigned short* p1, const unsigned short* p2);
+
+   static bool NDNBOOST_REGEX_CALL isctype(unsigned short, char_class_type);
+   static int NDNBOOST_REGEX_CALL value(unsigned short, int);
+
+   locale_type imbue(locale_type l)
+   { return l; }
+   locale_type getloc()const
+   { return locale_type(); }
+
+private:
+   // this type is not copyable:
+   c_regex_traits(const c_regex_traits&);
+   c_regex_traits& operator=(const c_regex_traits&);
+};
+
+#endif
+
+#endif // NDNBOOST_NO_WREGEX
+
+}
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+#  include NDNBOOST_ABI_SUFFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+
+