try to use python.net as the bridge.

Pythonnet.Runtime/monosupport.cs

@@ -0,0 +1,60 @@
+// ==========================================================================
+// This software is subject to the provisions of the Zope Public License,
+// Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
+// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+// FOR A PARTICULAR PURPOSE.
+// ==========================================================================
+
+#if (UCS4)
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+using Mono.Unix;
+
+namespace Python.Runtime {
+        // The Utf32Marshaler was written Jonathan Pryor and has been placed
+        // in the PUBLIC DOMAIN. 
+        public class Utf32Marshaler : ICustomMarshaler {
+                private static Utf32Marshaler instance = new
+                Utf32Marshaler ();
+                
+                public static ICustomMarshaler GetInstance (string s)
+                {
+                        return instance;
+                }
+                
+                public void CleanUpManagedData (object o)
+                {
+                }
+                
+                public void CleanUpNativeData (IntPtr pNativeData)
+                {
+                        UnixMarshal.FreeHeap (pNativeData);
+                }
+                
+                public int GetNativeDataSize ()
+                {
+                        return IntPtr.Size;
+                }
+                
+                public IntPtr MarshalManagedToNative (object obj)
+                {
+                        string s = obj as string;
+                        if (s == null)
+                                return IntPtr.Zero;
+                        return UnixMarshal.StringToHeap (s,
+                        Encoding.UTF32);
+                }
+                
+                public object MarshalNativeToManaged (IntPtr
+                pNativeData)
+                {
+                        return UnixMarshal.PtrToString (pNativeData, 
+                                Encoding.UTF32);
+                }
+        }
+}
+#endif
+