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bpo-39087: Add _PyUnicode_GetUTF8Buffer() (GH-17659)

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Co-authored-by: Victor Stinner <vstinner@python.org>
This commit is contained in:
Inada Naoki 2020-03-14 12:43:18 +09:00 • committed by GitHub
parent 8fb02b6e19
commit c7ad974d34
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5 changed files with 284 additions and 6 deletions
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35
Objects/unicodeobject.c
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@ -3991,6 +3991,41 @@ PyUnicode_FSDecoder(PyObject* arg, void* addr)
}
int
_PyUnicode_GetUTF8Buffer(PyObject *unicode, const char *errors,
Py_buffer *view)
{
if (!PyUnicode_Check(unicode)) {
PyErr_BadArgument();
return -1;
}
if (PyUnicode_READY(unicode) == -1) {
return -1;
}
if (PyUnicode_UTF8(unicode) != NULL
&& Py_TYPE(unicode)->tp_as_buffer == NULL) {
return PyBuffer_FillInfo(view, unicode,
PyUnicode_UTF8(unicode),
PyUnicode_UTF8_LENGTH(unicode),
/* readonly */ 1, PyBUF_SIMPLE);
}
// Unlike PyUnicode_AsUTF8AndSize(), this function doesn't
// create a UTF-8 cache for speed and efficiency.
PyObject *bytes = _PyUnicode_AsUTF8String(unicode, errors);
if (bytes == NULL) {
return -1;
}
assert(PyBytes_CheckExact(bytes));
if (PyObject_GetBuffer(bytes, view, PyBUF_SIMPLE) < 0) {
Py_DECREF(bytes);
return -1;
}
return 0;
}
static int unicode_fill_utf8(PyObject *unicode);
const char *