diff --git a/include/ndnboost/iostreams/detail/absolute_path.hpp b/include/ndnboost/iostreams/detail/absolute_path.hpp
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+/*
+ * 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.
+
+ * File:        ndnboost/iostreams/detail/execute.hpp
+ * Date:        Thu Dec 06 13:21:54 MST 2007
+ * Copyright:   2007-2008 CodeRage, LLC
+ * Author:      Jonathan Turkanis
+ * Contact:     turkanis at coderage dot com
+ *
+ * Defines the function ndnboost::iostreams::detail::absolute_path, used for 
+ * debug output for mapped files.
+ */
+
+#ifndef NDNBOOST_IOSTREAMS_DETAIL_ABSOLUTE_PATH_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_DETAIL_ABSOLUTE_PATH_HPP_INCLUDED
+
+#include <string>
+#include <ndnboost/iostreams/detail/config/windows_posix.hpp>
+#ifdef NDNBOOST_IOSTREAMS_WINDOWS
+# include <cctype>
+#endif
+#include <ndnboost/iostreams/detail/current_directory.hpp>
+
+namespace ndnboost { namespace iostreams { namespace detail {
+
+// Resolves the given path relative to the current working directory
+inline std::string absolute_path(const std::string& path)
+{
+#ifdef NDNBOOST_IOSTREAMS_WINDOWS
+    return path.size() && (path[0] == '/' || path[0] == '\\') ||
+           path.size() > 1 && std::isalpha(path[0]) && path[1] == ':' ?
+               path :
+               current_directory() + '\\' + path;
+#else // #ifdef NDNBOOST_IOSTREAMS_WINDOWS
+    return path.size() && (path[0] == '/') ?
+        path :
+        current_directory() + '/' + path;
+#endif // #ifdef NDNBOOST_IOSTREAMS_WINDOWS
+}
+
+} } } // End namespaces detail, iostreams, boost.
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_DETAIL_ABSOLUTE_PATH_HPP_INCLUDED