python: Move helper function.

* lang/python/gpgme.i (object_to_gpgme_t): Move...
* lang/python/helpers.c: ... here.
* lang/python/helpers.h (object_to_gpgme_t): New prototype.

Signed-off-by: Justus Winter <[email protected]>

1 files changed, 36 insertions, 0 deletions

diff --git a/lang/python/helpers.c b/lang/python/helpers.c
index 4b6ac31f..3ecbacc7 100644
--- a/lang/python/helpers.c
+++ b/lang/python/helpers.c
@@ -146,7 +146,43 @@ PyObject *pygpgme_raise_callback_exception(PyObject *self)
   return Py_None;
 }
 #undef EXCINFO
+
+/* Argument conversion.  */
+
+/* Convert object to a pointer to gpgme type, generic version.  */
+PyObject *
+object_to_gpgme_t(PyObject *input, const char *objtype, int argnum)
+{
+  PyObject *pyname = NULL, *pypointer = NULL;
+  pyname = PyObject_CallMethod(input, "_getctype", NULL);
+  if (pyname && PyUnicode_Check(pyname))
+    {
+      if (strcmp(PyUnicode_AsUTF8(pyname), objtype) != 0)
+        {
+          PyErr_Format(PyExc_TypeError,
+                       "arg %d: Expected value of type %s, but got %s",
+                       argnum, objtype, PyUnicode_AsUTF8(pyname));
+          Py_DECREF(pyname);
+          return NULL;
+        }
+    }
+  else
+    return NULL;
+
+  Py_DECREF(pyname);
+  pypointer = PyObject_GetAttrString(input, "wrapped");
+  if (pypointer == NULL) {
+    PyErr_Format(PyExc_TypeError,
+		 "arg %d: Use of uninitialized Python object %s",
+		 argnum, objtype);
+    return NULL;
+  }
+  return pypointer;
+}
+
+
 
+/* Callback support.  */
 static gpgme_error_t pyPassphraseCb(void *hook,
 				    const char *uid_hint,
 				    const char *passphrase_info,