diff --git a/include/ndnboost/iostreams/positioning.hpp b/include/ndnboost/iostreams/positioning.hpp
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+++ b/include/ndnboost/iostreams/positioning.hpp
@@ -0,0 +1,117 @@
+// (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.
+
+// Thanks to Gareth Sylvester-Bradley for the Dinkumware versions of the
+// positioning functions.
+
+#ifndef NDNBOOST_IOSTREAMS_POSITIONING_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_POSITIONING_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <ndnboost/config.hpp>
+#include <ndnboost/cstdint.hpp>
+#include <ndnboost/integer_traits.hpp>
+#include <ndnboost/iostreams/detail/config/codecvt.hpp> // mbstate_t.
+#include <ndnboost/iostreams/detail/config/fpos.hpp>
+#include <ndnboost/iostreams/detail/ios.hpp> // streamoff, streampos.
+
+// Must come last.
+#include <ndnboost/iostreams/detail/config/disable_warnings.hpp> 
+
+#ifdef NDNBOOST_NO_STDC_NAMESPACE
+namespace std { using ::fpos_t; }
+#endif
+
+namespace ndnboost { namespace iostreams {
+                    
+//------------------Definition of stream_offset-------------------------------//
+
+typedef ndnboost::intmax_t stream_offset;
+
+//------------------Definition of stream_offset_to_streamoff------------------//
+
+inline std::streamoff stream_offset_to_streamoff(stream_offset off)
+{ return static_cast<stream_offset>(off); }
+
+//------------------Definition of offset_to_position--------------------------//
+
+# ifndef NDNBOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS
+
+inline std::streampos offset_to_position(stream_offset off) { return off; }
+
+# else // # ifndef NDNBOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS
+
+inline std::streampos offset_to_position(stream_offset off)
+{ return std::streampos(std::mbstate_t(), off); }
+
+# endif // # ifndef NDNBOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS
+
+//------------------Definition of position_to_offset--------------------------//
+
+// Hande custom pos_type's
+template<typename PosType> 
+inline stream_offset position_to_offset(PosType pos)
+{ return std::streamoff(pos); }
+
+# ifndef NDNBOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS
+
+inline stream_offset position_to_offset(std::streampos pos) { return pos; }
+
+# else // # ifndef NDNBOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS
+
+// In the Dinkumware standard library, a std::streampos consists of two stream
+// offsets -- _Fpos, of type std::fpos_t, and _Myoff, of type std::streamoff --
+// together with a conversion state. A std::streampos is converted to a 
+// ndnboost::iostreams::stream_offset by extracting the two stream offsets and
+// summing them. The value of _Fpos can be extracted using the implementation-
+// defined member functions seekpos() or get_fpos_t(), depending on the 
+// Dinkumware version. The value of _Myoff cannot be extracted directly, but can
+// be calculated as the difference between the result of converting the 
+// std::fpos to a std::streamoff and the result of converting the member _Fpos
+// to a long. The latter operation is accomplished with the macro _FPOSOFF, 
+// which works correctly on platforms where std::fpos_t is an integral type and 
+// platforms where it is a struct
+
+// Converts a std::fpos_t to a stream_offset
+inline stream_offset fpos_t_to_offset(std::fpos_t pos)
+{
+#  if defined(_POSIX_) || (_INTEGRAL_MAX_BITS >= 64) || defined(__IBMCPP__)
+    return pos;
+#  else
+    return _FPOSOFF(pos);
+#  endif
+}
+
+// Extracts the member _Fpos from a std::fpos
+inline std::fpos_t streampos_to_fpos_t(std::streampos pos)
+{
+#  if defined (_CPPLIB_VER) || defined(__IBMCPP__)
+    return pos.seekpos();
+#  else
+    return pos.get_fpos_t();
+#  endif
+}
+
+inline stream_offset position_to_offset(std::streampos pos)
+{
+    return fpos_t_to_offset(streampos_to_fpos_t(pos)) +
+        static_cast<stream_offset>(
+            static_cast<std::streamoff>(pos) -
+            _FPOSOFF(streampos_to_fpos_t(pos))
+        );
+}
+
+# endif // # ifndef NDNBOOST_IOSTREAMS_HAS_DINKUMWARE_FPOS 
+
+} } // End namespaces iostreams, boost.
+
+#include <ndnboost/iostreams/detail/config/enable_warnings.hpp> 
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_POSITIONING_HPP_INCLUDED