Python DFHack test

.gitignore

include/python
*.o
embed
libpython*

_readme.md

1. Link libpython to "libpython3.6.dylib" in the current folder
2. Link python include directory to "include/python"
3. make

embed.cpp

#include <dlfcn.h>
#include <iostream>

#include <python/Python.h>

using namespace std;

PyObject *dfhack_print(PyObject *self, PyObject *args) {
    cout << "dfhack_print()" << endl;
    Py_RETURN_NONE;
}

PyObject *dfhack_call(PyObject *self, PyObject *args) {
    ssize_t len = PyTuple_Size(args);
    cout << "dfhack_call(): " << len << " arguments" << endl;
    for (ssize_t i = 0; i < len; i++) {
        PyObject *obj = PyTuple_GetItem(args, i);
        PyTypeObject *type = Py_TYPE(obj);
        cout << "  arg " << i << " = " << obj << ", type: " << type->tp_name << endl;
        if (PyLong_Check(obj)) {
            cout << "    as long: " << PyLong_AsLong(obj) << endl;
        }
    }
    Py_RETURN_NONE;
}

PyMethodDef dfhack_methods[] = {
    {"print", dfhack_print, METH_VARARGS, "help"},
    {"call", dfhack_call, METH_VARARGS, 0},
    {0, 0, 0, 0}
};

PyModuleDef dfhack_module = {
    PyModuleDef_HEAD_INIT, "dfhack", nullptr, -1, dfhack_methods,
    0, 0, 0, 0
};

PyObject* dfhack_init() {
    cout << "dfhack_init" << endl;
    return PyModule_Create(&dfhack_module);
}

int main() {
    cout << "bind ok" << endl;
    PyImport_AppendInittab("dfhack", dfhack_init);

    Py_SetProgramName(Py_DecodeLocale("dfhack", nullptr));
    Py_Initialize();

    cout << PyImport_ImportModule("dfhack") << endl;
    cout << PyImport_ImportModule("sys") << endl;
    cout << PyImport_ImportModule("math") << endl;
    cout << PyImport_ImportModule("os.path") << endl;

    PyRun_SimpleString("print('hello')");
    PyRun_SimpleString("import dfhack;print(dfhack.print())");
    PyRun_SimpleString("print(dir(dfhack))");
    PyRun_SimpleString("dfhack.call(5, 'a', None, True, False, 3.2,(),[],{},set())");

    return 0;
}

Makefile

CXXFLAGS = -std=c++11 -I./include
# LDFLAGS = -L. -lpython3.6 -lstdc++
LDFLAGS = -lstdc++

all: embed

embed: embed.o

.PHONY: clean
clean:
	rm -f embed *.o