python: Support the Assuan engine.

* lang/python/gpgme.i: Add typemaps for the Assuan protocol callbacks.
* lang/python/helpers.c (_pyme_assuan_{data,inquire,status}_cb): New
functions.
* lang/python/private.h (_pyme_assuan_{data,inquire,status}_cb): New
prototypes.
* lang/python/pyme/core.py (Context.assuan_transact): New method.
* lang/python/pyme/util.py (percent_escape): New function.
* lang/python/tests/Makefile.am (py_tests): Add new test.
* lang/python/tests/t-protocol-assuan.py: New file.

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

1 files changed, 54 insertions, 0 deletions

diff --git a/lang/python/gpgme.i b/lang/python/gpgme.i
index a372edd4..24adf74d 100644
--- a/lang/python/gpgme.i
+++ b/lang/python/gpgme.i
@@ -443,6 +443,60 @@
   $2 = $input;
 }
 
+
+
+/* The assuan protocol callbacks.  */
+%typemap(in) (gpgme_assuan_data_cb_t data_cb, void *data_cb_value) {
+  if ($input == Py_None)
+    $1 = $2 = NULL;
+  else
+    {
+      if (! PyTuple_Check($input))
+        return PyErr_Format(PyExc_TypeError, "callback must be a tuple");
+      if (PyTuple_Size($input) != 2)
+        return PyErr_Format(PyExc_TypeError,
+                            "callback must be a tuple of size 2");
+      if (! PyCallable_Check(PyTuple_GetItem($input, 1)))
+        return PyErr_Format(PyExc_TypeError, "second item must be callable");
+      $1 = _pyme_assuan_data_cb;
+      $2 = $input;
+    }
+}
+
+%typemap(in) (gpgme_assuan_inquire_cb_t inq_cb, void *inq_cb_value) {
+  if ($input == Py_None)
+    $1 = $2 = NULL;
+  else
+    {
+      if (! PyTuple_Check($input))
+        return PyErr_Format(PyExc_TypeError, "callback must be a tuple");
+      if (PyTuple_Size($input) != 2)
+        return PyErr_Format(PyExc_TypeError,
+                            "callback must be a tuple of size 2");
+      if (! PyCallable_Check(PyTuple_GetItem($input, 1)))
+        return PyErr_Format(PyExc_TypeError, "second item must be callable");
+      $1 = _pyme_assuan_inquire_cb;
+      $2 = $input;
+    }
+}
+
+%typemap(in) (gpgme_assuan_status_cb_t stat_cb, void *stat_cb_value) {
+  if ($input == Py_None)
+    $1 = $2 = NULL;
+  else
+    {
+      if (! PyTuple_Check($input))
+        return PyErr_Format(PyExc_TypeError, "callback must be a tuple");
+      if (PyTuple_Size($input) != 2)
+        return PyErr_Format(PyExc_TypeError,
+                            "callback must be a tuple of size 2");
+      if (! PyCallable_Check(PyTuple_GetItem($input, 1)))
+        return PyErr_Format(PyExc_TypeError, "second item must be callable");
+      $1 = _pyme_assuan_status_cb;
+      $2 = $input;
+    }
+}
+
 /* Include the unmodified <gpgme.h> for cc, and the cleaned-up local
    version for SWIG.  We do, however, want to hide certain fields on
    some structs, which we provide prior to including the version for