int do_import(FARPROC init_func, char *modname) { int res = -1; PyObject* (*p)(void); PyObject *m = NULL; struct PyModuleDef *def; char *oldcontext; PyObject *name = PyUnicode_FromString(modname); if (name == NULL) return -1; m = _PyImport_FindExtensionObject(name, name); if (m != NULL) { Py_DECREF(name); return 0; } if (init_func == NULL) { PyObject *msg = PyUnicode_FromFormat("dynamic module does not define " "init function (PyInit_%s)", modname); if (msg == NULL) return -1; PyErr_SetImportError(msg, name, NULL); Py_DECREF(msg); Py_DECREF(name); return -1; } oldcontext = _Py_PackageContext; _Py_PackageContext = modname; p = (PyObject*(*)(void))init_func; m = (*p)(); _Py_PackageContext = oldcontext; if (PyErr_Occurred()) { Py_DECREF(name); return -1; } /* Remember pointer to module init function. */ def = PyModule_GetDef(m); if (def == NULL) { PyErr_Format(PyExc_SystemError, "initialization of %s did not return an extension " "module", modname); Py_DECREF(name); return -1; } def->m_base.m_init = p; res = _PyImport_FixupExtensionObject(m, name, name); Py_DECREF(name); return res; }
PyObject * _PyImport_LoadDynamicModule(PyObject *name, PyObject *path, FILE *fp) { PyObject *m; PyObject *pathbytes; char *namestr, *lastdot, *shortname, *packagecontext, *oldcontext; dl_funcptr p0; PyObject* (*p)(void); struct PyModuleDef *def; namestr = _PyUnicode_AsString(name); if (namestr == NULL) return NULL; m = _PyImport_FindExtensionObject(name, path); if (m != NULL) { Py_INCREF(m); return m; } lastdot = strrchr(namestr, '.'); if (lastdot == NULL) { packagecontext = NULL; shortname = namestr; } else { packagecontext = namestr; shortname = lastdot+1; } pathbytes = PyUnicode_EncodeFSDefault(path); if (pathbytes == NULL) return NULL; p0 = _PyImport_GetDynLoadFunc(shortname, PyBytes_AS_STRING(pathbytes), fp); Py_DECREF(pathbytes); p = (PyObject*(*)(void))p0; if (PyErr_Occurred()) return NULL; if (p == NULL) { PyErr_Format(PyExc_ImportError, "dynamic module does not define init function" " (PyInit_%s)", shortname); return NULL; } oldcontext = _Py_PackageContext; _Py_PackageContext = packagecontext; m = (*p)(); _Py_PackageContext = oldcontext; if (m == NULL) return NULL; if (PyErr_Occurred()) { Py_DECREF(m); PyErr_Format(PyExc_SystemError, "initialization of %s raised unreported exception", shortname); return NULL; } /* Remember pointer to module init function. */ def = PyModule_GetDef(m); def->m_base.m_init = p; /* Remember the filename as the __file__ attribute */ if (PyModule_AddObject(m, "__file__", path) < 0) PyErr_Clear(); /* Not important enough to report */ else Py_INCREF(path); if (_PyImport_FixupExtensionObject(m, name, path) < 0) return NULL; if (Py_VerboseFlag) PySys_FormatStderr( "import %U # dynamically loaded from %R\n", name, path); return m; }