| 4710c53d |
1 | \r |
| 2 | /* Support for dynamic loading of extension modules */\r |
| 3 | \r |
| 4 | #include "Python.h"\r |
| 5 | \r |
| 6 | /* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is\r |
| 7 | supported on this platform. configure will then compile and link in one\r |
| 8 | of the dynload_*.c files, as appropriate. We will call a function in\r |
| 9 | those modules to get a function pointer to the module's init function.\r |
| 10 | */\r |
| 11 | #ifdef HAVE_DYNAMIC_LOADING\r |
| 12 | \r |
| 13 | #include "importdl.h"\r |
| 14 | \r |
| 15 | extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name,\r |
| 16 | const char *shortname,\r |
| 17 | const char *pathname, FILE *fp);\r |
| 18 | \r |
| 19 | \r |
| 20 | \r |
| 21 | PyObject *\r |
| 22 | _PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)\r |
| 23 | {\r |
| 24 | PyObject *m;\r |
| 25 | char *lastdot, *shortname, *packagecontext, *oldcontext;\r |
| 26 | dl_funcptr p;\r |
| 27 | \r |
| 28 | if ((m = _PyImport_FindExtension(name, pathname)) != NULL) {\r |
| 29 | Py_INCREF(m);\r |
| 30 | return m;\r |
| 31 | }\r |
| 32 | lastdot = strrchr(name, '.');\r |
| 33 | if (lastdot == NULL) {\r |
| 34 | packagecontext = NULL;\r |
| 35 | shortname = name;\r |
| 36 | }\r |
| 37 | else {\r |
| 38 | packagecontext = name;\r |
| 39 | shortname = lastdot+1;\r |
| 40 | }\r |
| 41 | \r |
| 42 | p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp);\r |
| 43 | if (PyErr_Occurred())\r |
| 44 | return NULL;\r |
| 45 | if (p == NULL) {\r |
| 46 | PyErr_Format(PyExc_ImportError,\r |
| 47 | "dynamic module does not define init function (init%.200s)",\r |
| 48 | shortname);\r |
| 49 | return NULL;\r |
| 50 | }\r |
| 51 | oldcontext = _Py_PackageContext;\r |
| 52 | _Py_PackageContext = packagecontext;\r |
| 53 | (*p)();\r |
| 54 | _Py_PackageContext = oldcontext;\r |
| 55 | if (PyErr_Occurred())\r |
| 56 | return NULL;\r |
| 57 | \r |
| 58 | m = PyDict_GetItemString(PyImport_GetModuleDict(), name);\r |
| 59 | if (m == NULL) {\r |
| 60 | PyErr_SetString(PyExc_SystemError,\r |
| 61 | "dynamic module not initialized properly");\r |
| 62 | return NULL;\r |
| 63 | }\r |
| 64 | /* Remember the filename as the __file__ attribute */\r |
| 65 | if (PyModule_AddStringConstant(m, "__file__", pathname) < 0)\r |
| 66 | PyErr_Clear(); /* Not important enough to report */\r |
| 67 | \r |
| 68 | if (_PyImport_FixupExtension(name, pathname) == NULL)\r |
| 69 | return NULL;\r |
| 70 | if (Py_VerboseFlag)\r |
| 71 | PySys_WriteStderr(\r |
| 72 | "import %s # dynamically loaded from %s\n",\r |
| 73 | name, pathname);\r |
| 74 | Py_INCREF(m);\r |
| 75 | return m;\r |
| 76 | }\r |
| 77 | \r |
| 78 | #endif /* HAVE_DYNAMIC_LOADING */\r |
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