plugins: python-renderer: Implement first gds_render built-in module with a get_number function

plugins/python-renderer/include/python-renderer/gds-render-module.h

@@ -31,7 +31,13 @@
  * @{
  */
 
+#include <Python.h>
 
+/**
+ * @brief Set up the gds_render python module
+ * @return New module reference
+ */
+PyObject *init_gds_render_module();
 
 /** @} */
 

plugins/python-renderer/src/gds-render-module.c

@@ -24,3 +24,30 @@
  */
 
 #include <python-renderer/gds-render-module.h>
+
+static PyObject *test(PyObject *self, PyObject *args)
+{
+    if(!PyArg_ParseTuple(args, ":numargs"))
+	return NULL;
+
+    return PyLong_FromLong(20UL);
+}
+
+static PyMethodDef gds_render_methods[] = {
+    {"get_number", test, METH_VARARGS,
+     "Return the number of arguments received by the process."},
+    {NULL, NULL, 0, NULL}
+};
+
+static PyModuleDef gds_render_module = {
+	PyModuleDef_HEAD_INIT, "gds_render", NULL, -1, gds_render_methods,
+	NULL, NULL, NULL, NULL
+};
+
+PyObject *init_gds_render_module(void)
+{
+	PyObject *this_module;
+
+	this_module = PyModule_Create(&gds_render_module);
+	return this_module;
+}

plugins/python-renderer/src/plugin-main.c

@@ -88,12 +88,20 @@ int FUNC_DECL(EXTERNAL_LIBRARY_INIT_FUNCTION)(const char *params, const char *ve
 	PyObject *p_name;
 	PyObject *p_sys_path;
 	PyObject *p_cwd_string;
+	PyObject *gds_render_module;
 	char cwd[256];
 
 	if (!params || !version)
 		return -1000;
 
 	printf("Init with params: %s\ngds-render version: %s\n", params, version);
+
+	ret = PyImport_AppendInittab("gds_render", &init_gds_render_module);
+	if (ret) {
+		fprintf(stderr, "Registration of gds_render python module failed\n");
+		goto return_value;
+	}
+
 	Py_Initialize();
 
 	if (!getcwd(cwd, sizeof(cwd))) {