--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/templates/python_runner.h	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,97 @@
+#ifndef PYTHON_RUNNER_H
+#define PYTHON_RUNNER_H
+
+#ifdef PYTHON_SCRIPTING
+#include "pyembed.h"
+#endif
+
+#include <map>
+#include <string>
+#include <set>
+
+struct python_runner
+{
+
+    PyObject* pymodule = nullptr;
+    PyObject *main = nullptr;
+
+    std::string buffer;
+
+    explicit python_runner()
+    {
+        PyImport_AppendInittab("emb", emb::PyInit_emb);
+        Py_Initialize();
+
+        pymodule = PyImport_ImportModule("emb");
+        main = PyImport_AddModule("__main__");
+    }
+
+    std::string run(std::map<std::string, std::string>& kps, std::string between, const std::vector<std::string>& all_variables)
+    {
+        std::string buffer;
+        emb::stdout_write_type write = [&buffer] (std::string s) { buffer += s; };
+        emb::set_stdout(write);
+
+        // generate a list of assignments to kp/kv values from the kps vector
+        std::set<std::string> set_variables;
+        for(const auto& [kp, kv] : kps)
+        {
+            std::string cmd = kp + "='" + kv + "'\n";
+            between = cmd + between;
+            set_variables.insert(kp);
+        }
+
+        // here gather all the other variables that might have been in the template
+        for(const auto& v : all_variables)
+        {
+            if(set_variables.count(v) == 0)
+            {
+                std::string cmd = v + "=''\n";
+                between = cmd + between;
+                set_variables.insert(v);
+            }
+        }
+
+        // now gather all the structure definitions
+
+        //std::cerr << "Trying to run:" << std::endl<< between << std::endl;
+
+        PyRun_SimpleString(between.c_str());
+        emb::reset_stdout();
+
+        PyObject *globals = PyModule_GetDict(main);
+        if(globals)
+        {
+            for(const auto& v : set_variables)
+            {
+                PyObject *a = PyDict_GetItemString(globals, v.c_str());
+                if(a)
+                {
+                    PyObject* temp_bytes = PyUnicode_AsEncodedString( a, "UTF-8", "strict" );
+                    if (temp_bytes)
+                    {
+                        std::string r = PyBytes_AS_STRING( temp_bytes );
+                        kps[v] = r;
+
+                        Py_DECREF( temp_bytes );
+                    }
+                    Py_DECREF(a);
+                }
+            }
+
+            Py_DECREF(globals);
+        }
+
+        return buffer;
+    }
+
+    virtual ~python_runner()
+    {
+        Py_DECREF(main);
+        Py_DECREF(pymodule);
+        Py_Finalize();
+    }
+
+};
+
+#endif // PYTHON_RUNNER_H