/**
@param persist: If true, retain the Python interpreter,
else finalize it
@param code: The multiline string of Python code.
The last line is evaluated to the returned result
@param output: Store result pointer here
@return Tcl error code
*/
static int
python_eval(bool persist, const char* code, const char* expression,
Tcl_Obj** output)
{
int rc;
char* result = python_result_default;
// Initialize:
rc = python_init();
TCL_CHECK(rc);
// Execute code:
DEBUG_TCL_TURBINE("python: code: %s", code);
PyObject* localDictionary = PyDict_New();
PyRun_String(code, Py_file_input, main_dict, localDictionary);
if (PyErr_Occurred()) return handle_python_exception();
// Evaluate expression:
DEBUG_TCL_TURBINE("python: expression: %s", expression);
PyObject* o = PyRun_String(expression, Py_eval_input, main_dict, localDictionary);
if (o == NULL) return handle_python_exception();
// Convert Python result to C string, then to Tcl string:
rc = PyArg_Parse(o, "s", &result);
if (rc != 1) return handle_python_non_string(o);
DEBUG_TCL_TURBINE("python: result: %s\n", result);
*output = Tcl_NewStringObj(result, -1);
// Clean up and return:
Py_DECREF(o);
if (!persist) python_finalize();
return TCL_OK;
}
static int python_init(void)
{
if (initialized) return TCL_OK;
DEBUG_TCL_TURBINE("python: initializing...");
Py_InitializeEx(1);
main_module = PyImport_AddModule("__main__");
if (main_module == NULL) return handle_python_exception();
main_dict = PyModule_GetDict(main_module);
if (main_dict == NULL) return handle_python_exception();
initialized = true;
return TCL_OK;
}
static int
Turbine_Debug_Cmd(ClientData cdata, Tcl_Interp *interp,
int objc, Tcl_Obj *const objv[])
{
TCL_ARGS(2);
if (turbine_debug_enabled)
{
unused char* msg = Tcl_GetString(objv[1]);
DEBUG_TCL_TURBINE("%s", msg);
return TCL_OK;
}
else
{
return TCL_OK;
}
}