diff --git a/contrib/json_spirit/json_spirit_utils.h b/contrib/json_spirit/json_spirit_utils.h
new file mode 100644
index 0000000..c492309
--- /dev/null
+++ b/contrib/json_spirit/json_spirit_utils.h
@@ -0,0 +1,63 @@
+#ifndef JSON_SPIRIT_UTILS
+#define JSON_SPIRIT_UTILS
+
+//          Copyright John W. Wilkinson 2007 - 2011
+// Distributed under the MIT License, see accompanying file LICENSE.txt
+
+// json spirit version 4.05
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include "json_spirit_value.h"
+#include <map>
+
+namespace json_spirit
+{ 
+    template< class Obj_t, class Map_t >
+    void obj_to_map( const Obj_t& obj, Map_t& mp_obj )
+    {
+        mp_obj.clear();
+
+        for( typename Obj_t::const_iterator i = obj.begin(); i != obj.end(); ++i )
+        {
+            mp_obj[ i->name_ ] = i->value_;
+        }
+    }
+
+    template< class Obj_t, class Map_t >
+    void map_to_obj( const Map_t& mp_obj, Obj_t& obj )
+    {
+        obj.clear();
+
+        for( typename Map_t::const_iterator i = mp_obj.begin(); i != mp_obj.end(); ++i )
+        {
+            obj.push_back( typename Obj_t::value_type( i->first, i->second ) );
+        }
+    }
+
+#ifdef JSON_SPIRIT_VALUE_ENABLED
+    typedef std::map< std::string, Value > Mapped_obj;
+#endif
+
+#if defined( JSON_SPIRIT_WVALUE_ENABLED ) && !defined( BOOST_NO_STD_WSTRING )
+    typedef std::map< std::wstring, wValue > wMapped_obj;
+#endif
+
+    template< class Object_type, class String_type >
+    const typename Object_type::value_type::Value_type& find_value( const Object_type& obj, const String_type& name )
+    {
+        for( typename Object_type::const_iterator i = obj.begin(); i != obj.end(); ++i )
+        {
+            if( i->name_ == name )
+            {
+                return i->value_;
+            }
+        }
+
+        return Object_type::value_type::Value_type::null;
+    }
+}
+
+#endif