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diff --git a/src/stlplus/strings/print_smart_ptr.tpp b/src/stlplus/strings/print_smart_ptr.tpp
new file mode 100644
index 0000000..51877c7
--- /dev/null
+++ b/src/stlplus/strings/print_smart_ptr.tpp
@@ -0,0 +1,74 @@
+////////////////////////////////////////////////////////////////////////////////
+
+//   Author:    Andy Rushton
+//   Copyright: (c) Southampton University 1999-2004
+//              (c) Andy Rushton           2004-2009
+//   License:   BSD License, see ../docs/license.html
+
+////////////////////////////////////////////////////////////////////////////////
+
+namespace stlplus
+{
+
+  template<typename T, typename S>
+  void print_smart_ptr(std::ostream& device,
+                       const smart_ptr<T>& value,
+                       S print_fn,
+                       const std::string& null_string,
+                       const std::string& prefix,
+                       const std::string& suffix)
+  {
+    if (value)
+    {
+      device << prefix;
+      print_fn(device, *value);
+      device << suffix;
+    }
+    else
+    {
+      device << null_string;
+    }
+  }
+
+  template<typename T, typename S>
+  void print_smart_ptr_clone(std::ostream& device,
+                             const smart_ptr_clone<T>& value,
+                             S print_fn,
+                             const std::string& null_string,
+                             const std::string& prefix,
+                             const std::string& suffix)
+  {
+    if (value)
+    {
+      device << prefix;
+      print_fn(device, *value);
+      device << suffix;
+    }
+    else
+    {
+      device << null_string;
+    }
+  }
+
+  template<typename T, typename S>
+  void print_smart_ptr_nocopy(std::ostream& device,
+                              const smart_ptr_nocopy<T>& value,
+                              S print_fn,
+                              const std::string& null_string,
+                              const std::string& prefix,
+                              const std::string& suffix)
+  {
+    if (value)
+    {
+      device << prefix;
+      print_fn(device, *value);
+      device << suffix;
+    }
+    else
+    {
+      device << null_string;
+    }
+  }
+
+} // end namespace stlplus
+