/* Support for dynamic loading of extension modules */ | |
#include "Python.h" | |
/* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is | |
supported on this platform. configure will then compile and link in one | |
of the dynload_*.c files, as appropriate. We will call a function in | |
those modules to get a function pointer to the module's init function. | |
*/ | |
#ifdef HAVE_DYNAMIC_LOADING | |
#include "importdl.h" | |
extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name, | |
const char *shortname, | |
const char *pathname, FILE *fp); | |
PyObject * | |
_PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp) | |
{ | |
PyObject *m; | |
char *lastdot, *shortname, *packagecontext, *oldcontext; | |
dl_funcptr p; | |
if ((m = _PyImport_FindExtension(name, pathname)) != NULL) { | |
Py_INCREF(m); | |
return m; | |
} | |
lastdot = strrchr(name, '.'); | |
if (lastdot == NULL) { | |
packagecontext = NULL; | |
shortname = name; | |
} | |
else { | |
packagecontext = name; | |
shortname = lastdot+1; | |
} | |
p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp); | |
if (PyErr_Occurred()) | |
return NULL; | |
if (p == NULL) { | |
PyErr_Format(PyExc_ImportError, | |
"dynamic module does not define init function (init%.200s)", | |
shortname); | |
return NULL; | |
} | |
oldcontext = _Py_PackageContext; | |
_Py_PackageContext = packagecontext; | |
(*p)(); | |
_Py_PackageContext = oldcontext; | |
if (PyErr_Occurred()) | |
return NULL; | |
m = PyDict_GetItemString(PyImport_GetModuleDict(), name); | |
if (m == NULL) { | |
PyErr_SetString(PyExc_SystemError, | |
"dynamic module not initialized properly"); | |
return NULL; | |
} | |
/* Remember the filename as the __file__ attribute */ | |
if (PyModule_AddStringConstant(m, "__file__", pathname) < 0) | |
PyErr_Clear(); /* Not important enough to report */ | |
if (_PyImport_FixupExtension(name, pathname) == NULL) | |
return NULL; | |
if (Py_VerboseFlag) | |
PySys_WriteStderr( | |
"import %s # dynamically loaded from %s\n", | |
name, pathname); | |
Py_INCREF(m); | |
return m; | |
} | |
#endif /* HAVE_DYNAMIC_LOADING */ |