8000 bpo-1635741: pyexpat error handling by koubaa · Pull Request #22489 · python/cpython · GitHub
[go: up one dir, main page]
Skip to content

bpo-1635741: pyexpat error handling #22489

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 8 commits into from
Nov 4, 2020
Merged

bpo-1635741: pyexpat error handling #22489

Changes from 1 commit
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
e48b24d
error handling 1
koubaa Oct 2, 2020
0e536f6
address PR comments
koubaa Oct 2, 2020
0b56510
update based on PR review
koubaa Oct 10, 2020
a994d8a
pull submodule into helper function
koubaa Oct 12, 2020
fb2bcf7
pull submodule code into helper functions
koubaa Oct 19, 2020
f99b31c
address comments
koubaa Nov 2, 2020
25c1070
update based on review
koubaa Nov 3, 2020
e905596
readability:
koubaa Nov 4, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
pull submodule code into helper functions
  • Loading branch information
@koubaa
koubaa committed Oct 19, 2020
commit fb2bcf7b91966c51daa637f5c067991e9666d8ef
252 changes: 134 additions & 118 deletions Modules/pyexpat.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1653,110 +1653,15 @@ add_submodule(PyObject *mod, const char *fullname)
}

static int
pyexpat_exec(PyObject *mod)
add_errors_module(PyObject *mod)
{
PyObject *codes_dict = NULL, *rev_codes_dict = NULL;

if (PyType_Ready(&Xmlparsetype) < 0) {
goto error;
}

if (init_handler_descrs() < 0) {
goto error;
}

/* Add some symbolic constants to the module */
if (ErrorObject == NULL) {
ErrorObject = PyErr_NewException("xml.parsers.expat.ExpatError",
NULL, NULL);
}
if (ErrorObject == NULL) {
goto error;
}

Py_INCREF(ErrorObject);
if (PyModule_AddObject(mod, "error", ErrorObject) < 0) {
Py_DECREF(ErrorObject);
goto error;
}
Py_INCREF(ErrorObject);
if (PyModule_AddObject(mod, "ExpatError", ErrorObject) < 0) {
Py_DECREF(ErrorObject);
goto error;
}
Py_INCREF(&Xmlparsetype);
if (PyModule_AddObject(mod, "XMLParserType",
(PyObject *) &Xmlparsetype) < 0) {
Py_DECREF(&Xmlparsetype);
goto error;
}

if (PyModule_AddStringConstant(mod, "EXPAT_VERSION",
XML_ExpatVersion()) < 0) {
goto error;
}
{
XML_Expat_Version info = XML_ExpatVersionInfo();
PyObject *versionInfo = Py_BuildValue("(iii)",
info.major,
info.minor,
info.micro);
if (PyModule_AddObject(mod, "version_info", versionInfo) < 0) {
Py_DECREF(versionInfo);
goto error;
}
}
/* XXX When Expat supports some way of figuring out how it was
compiled, this should check and set native_encoding
appropriately.
*/
if (PyModule_AddStringConstant(mod, "native_encoding", "UTF-8") < 0) {
goto error;
}

PyObject *errors_module = add_submodule(mod, MODULE_NAME ".errors");
if (errors_module == NULL) {
goto error;
}

PyObject *model_module = add_submodule(mod, MODULE_NAME ".model");
if (model_module == NULL) {
goto error;
}

#if XML_COMBINED_VERSION > 19505
{
const XML_Feature *features = XML_GetFeatureList();
PyObject *list = PyList_New(0);
if (list == NULL) {
goto error;
}

int i = 0;
for (; features[i].feature != XML_FEATURE_END; ++i) {
PyObject *item = Py_BuildValue("si", features[i].name,
features[i].value);
if (item == NULL) {
Py_DECREF(list);
goto error;
}
int ok = PyList_Append(list, item);
Py_DECREF(item);
if (ok < 0) {
PyErr_Clear();
Py_DECREF(list);
goto error;
}
}
if (PyModule_AddObject(mod, "features", list) < 0) {
Py_DECREF(list);
goto error;
}
return -1;
}
#endif

codes_dict = PyDict_New();
rev_codes_dict = PyDict_New();
PyObject *codes_dict = PyDict_New();
PyObject *rev_codes_dict = PyDict_New();
if (codes_dict == NULL || rev_codes_dict == NULL) {
goto error;
}
Expand Down Expand Up @@ -1844,30 +1749,34 @@ pyexpat_exec(PyObject *mod)
if (PyModule_AddObject(errors_module, "messages", rev_codes_dict) < 0) {
goto error;
}
#undef MYCONST

#undef MYCONST
return 0;

#define MYCONST(c) do { \
if (PyModule_AddIntConstant(mod, #c, c) < 0) { \
goto error; \
} \
} while(0)
error:
Py_XDECREF(codes_dict);
Py_XDECREF(rev_codes_dict);
return -1;
}

MYCONST(XML_PARAM_ENTITY_PARSING_NEVER);
MYCONST(XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE);
MYCONST(XML_PARAM_ENTITY_PARSING_ALWAYS);
#undef MYCONST
static int
add_model_module(PyObject *mod)
{
PyObject *model_module = add_submodule(mod, MODULE_NAME ".model");
if (model_module == NULL) {
return -1;
}

#define MYCONST(c) do { \
if (PyModule_AddIntConstant(model_module, #c, c) < 0) { \
goto error; \
return -1; \
} \
} while(0)

if (PyModule_AddStringConstant(
model_module, "__doc__",
"Constants used to interpret content model information.") < 0) {
goto error;
return -1;
}

MYCONST(XML_CTYPE_EMPTY);
Expand All @@ -1882,6 +1791,118 @@ pyexpat_exec(PyObject *mod)
MYCONST(XML_CQUANT_REP);
MYCONST(XML_CQUANT_PLUS);
#undef MYCONST
return 0;
}

static int
pyexpat_exec(PyObject *mod)
{
if (PyType_Ready(&Xmlparsetype) < 0) {
return -1;
}

if (init_handler_descrs() < 0) {
return -1;
}

/* Add some symbolic constants to the module */
if (ErrorObject == NULL) {
ErrorObject = PyErr_NewException("xml.parsers.expat.ExpatError",
NULL, NULL);
}
if (ErrorObject == NULL) {
return -1;
}

Py_INCREF(ErrorObject);
if (PyModule_AddObject(mod, "error", ErrorObject) < 0) {
Py_DECREF(ErrorObject);
return -1;
}
Py_INCREF(ErrorObject);
if (PyModule_AddObject(mod, "ExpatError", ErrorObject) < 0) {
Py_DECREF(ErrorObject);
return -1;
}
Py_INCREF(&Xmlparsetype);
if (PyModule_AddObject(mod, "XMLParserType",
(PyObject *) &Xmlparsetype) < 0) {
Py_DECREF(&Xmlparsetype);
return -1;
}

if (PyModule_AddStringConstant(mod, "EXPAT_VERSION",
XML_ExpatVersion()) < 0) {
return -1;
}
{
XML_Expat_Version info = XML_ExpatVersionInfo();
PyObject *versionInfo = Py_BuildValue("(iii)",
info.major,
info.minor,
info.micro);
if (PyModule_AddObject(mod, "version_info", versionInfo) < 0) {
Py_DECREF(versionInfo);
return -1;
}
}
/* XXX When Expat supports some way of figuring out how it was
compiled, this should check and set native_encoding
appropriately.
*/
if (PyModule_AddStringConstant(mod, "native_encoding", "UTF-8") < 0) {
return -1;
}

if (add_errors_module(mod) < 0) {
return -1;
}

if (add_model_module(mod) < 0) {
return -1;
}

#if XML_COMBINED_VERSION > 19505
{
const XML_Feature *features = XML_GetFeatureList();
PyObject *list = PyList_New(0);
if (list == NULL) {
return -1;
}

int i = 0;
for (; features[i].feature != XML_FEATURE_END; ++i) {
PyObject *item = Py_BuildValue("si", features[i].name,
features[i].value);
if (item == NULL) {
Py_DECREF(list);
return -1;
}
int ok = PyList_Append(list, item);
Py_DECREF(item);
if (ok < 0) {
PyErr_Clear();
Py_DECREF(list);
return -1;
}
}
if (PyModule_AddObject(mod, "features", list) < 0) {
Py_DECREF(list);
return -1;
}
}
#endif

#define MYCONST(c) do { \
if (PyModule_AddIntConstant(mod, #c, c) < 0) { \
return -1; \
} \
} while(0)

MYCONST(XML_PARAM_ENTITY_PARSING_NEVER);
MYCONST(XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE);
MYCONST(XML_PARAM_ENTITY_PARSING_ALWAYS);
#undef MYCONST

static struct PyExpat_CAPI capi;
/* initialize pyexpat dispatch table */
Expand Down Expand Up @@ -1917,20 +1938,15 @@ pyexpat_exec(PyObject *mod)
/* export using capsule */
PyObject *capi_object = PyCapsule_New(&capi, PyExpat_CAPSULE_NAME, NULL);
if (capi_object == NULL) {
goto error;
return -1;
}

if (PyModule_AddObject(mod, "expat_CAPI", capi_object) < 0) {
Py_DECREF(capi_object);
goto error;
return -1;
}

return 0;

error:
Py_XDECREF(codes_dict);
Py_XDECREF(rev_codes_dict);
return -1;
}

static PyModuleDef_Slot pyexpat_slots[] = {
Expand Down
0