+ /* Add search directory for the protocol decoders. */
+ /* FIXME: Check error code. */
+ /* FIXME: What happens if this function is called multiple times? */
+ PyRun_SimpleString("import sys;"
+ "sys.path.append(r'" DECODERS_DIR "');");
+
+ if (!(dir = opendir(DECODERS_DIR)))
+ return SIGROKDECODE_ERR_DECODERS_DIR;
+
+ while ((dp = readdir(dir)) != NULL) {
+ if (!g_str_has_suffix(dp->d_name, ".py"))
+ continue;
+ /* For now use the filename (without .py) as decoder name. */
+ if ((tmp = g_strndup(dp->d_name, strlen(dp->d_name) - 3)))
+ list_pds = g_slist_append(list_pds, tmp);
+ }
+ closedir(dir);
+
+ return SIGROKDECODE_OK;
+}
+
+/**
+ * Returns the list of supported/loaded protocol decoders.
+ *
+ * This is a GSList containing the names of the decoders as strings.
+ *
+ * @return List of decoders, NULL if none are supported or loaded.
+ */
+GSList *sigrokdecode_list_decoders(void)
+{
+ return list_pds;
+}
+
+/**
+ * Helper function to handle Python strings.
+ *
+ * TODO: @param entries.
+ *
+ * @return SIGROKDECODE_OK upon success, a (negative) error code otherwise.
+ * The 'outstr' argument points to a malloc()ed string upon success.
+ */
+static int h_str(PyObject *py_res, PyObject *py_func, PyObject *py_mod,
+ const char *key, char **outstr)
+{
+ PyObject *py_str;
+ char *str;
+
+ py_str = PyMapping_GetItemString(py_res, (char *)key);
+ if (!py_str || !PyString_Check(py_str)) {
+ if (PyErr_Occurred())
+ PyErr_Print(); /* Returns void. */
+ Py_DECREF(py_func);
+ Py_DECREF(py_mod);
+ return SIGROKDECODE_ERR_PYTHON; /* TODO: More specific error? */
+ }
+
+ /*
+ * PyString_AsString()'s returned string refers to an internal buffer
+ * (not a copy), i.e. the data must not be modified, and the memory
+ * must not be free()'d.
+ */
+ if (!(str = PyString_AsString(py_str))) {
+ if (PyErr_Occurred())
+ PyErr_Print(); /* Returns void. */
+ Py_DECREF(py_str);
+ Py_DECREF(py_func);
+ Py_DECREF(py_mod);
+ return SIGROKDECODE_ERR_PYTHON; /* TODO: More specific error? */
+ }
+
+ if (!(*outstr = strdup(str))) {
+ if (PyErr_Occurred())
+ PyErr_Print(); /* Returns void. */
+ Py_DECREF(py_str);
+ Py_DECREF(py_func);
+ Py_DECREF(py_mod);
+ return SIGROKDECODE_ERR_MALLOC;
+ }
+
+ Py_DECREF(py_str);