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[3.11] gh-94526: getpath_dirname() no longer encodes the path (GH-97645) #97677

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Merged
merged 1 commit into from
Sep 30, 2022
Merged

[3.11] gh-94526: getpath_dirname() no longer encodes the path (GH-97645) #97677

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4 changes: 4 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2022-09-29-15-19-29.gh-issue-94526.wq5m6T.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
Fix the Python path configuration used to initialized :data:`sys.path` at
Python startup. Paths are no longer encoded to UTF-8/strict to avoid encoding
errors if it contains surrogate characters (bytes paths are decoded with the
surrogateescape error handler). Patch by Victor Stinner.
23 changes: 14 additions & 9 deletions Modules/getpath.c
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Original file line number Diff line number Diff line change
Expand Up @@ -82,27 +82,32 @@ getpath_abspath(PyObject *Py_UNUSED(self), PyObject *args)
static PyObject *
getpath_basename(PyObject *Py_UNUSED(self), PyObject *args)
{
const char *path;
if (!PyArg_ParseTuple(args, "s", &path)) {
PyObject *path;
if (!PyArg_ParseTuple(args, "U", &path)) {
return NULL;
}
const char *name = strrchr(path, SEP);
return PyUnicode_FromString(name ? name + 1 : path);
Py_ssize_t end = PyUnicode_GET_LENGTH(path);
Py_ssize_t pos = PyUnicode_FindChar(path, SEP, 0, end, -1);
if (pos < 0) {
return Py_NewRef(path);
}
return PyUnicode_Substring(path, pos + 1, end);
}


static PyObject *
getpath_dirname(PyObject *Py_UNUSED(self), PyObject *args)
{
const char *path;
if (!PyArg_ParseTuple(args, "s", &path)) {
PyObject *path;
if (!PyArg_ParseTuple(args, "U", &path)) {
return NULL;
}
const char *name = strrchr(path, SEP);
if (!name) {
Py_ssize_t end = PyUnicode_GET_LENGTH(path);
Py_ssize_t pos = PyUnicode_FindChar(path, SEP, 0, end, -1);
if (pos < 0) {
return PyUnicode_FromStringAndSize(NULL, 0);
}
return PyUnicode_FromStringAndSize(path, (name - path));
return PyUnicode_Substring(path, 0, pos);
}


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