[pygobject] Unify Python unicode to filename GI marshaling code

[Simon Feltman <sfeltman src gnome org>]

commit 594ad084c2cc21cebce209c11740e6d4866b0b82
Author: Simon Feltman <sfeltman src gnome org>
Date:   Sat Feb 16 19:49:59 2013 -0800

    Unify Python unicode to filename GI marshaling code
    
    Change _pygi_argument_from_object to use the cachers marshaler
    (_pygi_marshal_from_py_filename) directly instead of keeping a
    copy of the code.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=693405

 gi/pygi-argument.c |   30 ++----------------------------
 1 files changed, 2 insertions(+), 28 deletions(-)
---
diff --git a/gi/pygi-argument.c b/gi/pygi-argument.c
index cb3ac32..a122b32 100644
--- a/gi/pygi-argument.c
+++ b/gi/pygi-argument.c
@@ -1047,34 +1047,8 @@ _pygi_argument_from_object (PyObject   *object,
         }
         case GI_TYPE_TAG_FILENAME:
         {
-            GError *error = NULL;
-            gchar *string;
-
-#if PY_VERSION_HEX < 0x03000000
-            string = g_strdup(PyString_AsString (object));
-#else
-            {
-                PyObject *pybytes_obj = PyUnicode_AsUTF8String (object);
-                if (!pybytes_obj)
-                    break;
-
-                string = g_strdup(PyBytes_AsString (pybytes_obj));
-                Py_DECREF (pybytes_obj);
-            }
-#endif
-
-            if (string == NULL) {
-                break;
-            }
-
-            arg.v_string = g_filename_from_utf8 (string, -1, NULL, NULL, &error);
-            g_free(string);
-
-            if (arg.v_string == NULL) {
-                PyErr_SetString (PyExc_Exception, error->message);
-                /* TODO: Convert the error to an exception. */
-            }
-
+            _pygi_marshal_from_py_filename (NULL, NULL, NULL,
+                                            object, &arg);
             break;
         }
         case GI_TYPE_TAG_ARRAY: