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4 changes: 4 additions & 0 deletions docs/api.rst
Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,10 @@ Python 3.14

See `PyUnicodeWriter_WriteUTF8() documentation <https://docs.python.org/dev/c-api/unicode.html#c.PyUnicodeWriter_WriteUTF8>`__.

.. c:function:: int PyUnicodeWriter_WriteASCII(PyUnicodeWriter *writer, const char *str, Py_ssize_t size)

See `PyUnicodeWriter_WriteASCII() documentation <https://docs.python.org/dev/c-api/unicode.html#c.PyUnicodeWriter_WriteASCII>`__.

.. c:function:: int PyUnicodeWriter_WriteWideChar(PyUnicodeWriter *writer, const wchar_t *str, Py_ssize_t size)

See `PyUnicodeWriter_WriteWideChar() documentation <https://docs.python.org/dev/c-api/unicode.html#c.PyUnicodeWriter_WriteWideChar>`__.
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1 change: 1 addition & 0 deletions docs/changelog.rst
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
Changelog
=========

* 2025-06-09: Add ``PyUnicodeWriter_WriteASCII()`` function.
* 2025-06-03: Add functions:

* ``PySys_GetAttr()``
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12 changes: 12 additions & 0 deletions pythoncapi_compat.h
Original file line number Diff line number Diff line change
Expand Up @@ -1456,6 +1456,18 @@ PyUnicodeWriter_WriteUTF8(PyUnicodeWriter *writer,
return res;
}

static inline int
PyUnicodeWriter_WriteASCII(PyUnicodeWriter *writer,
const char *str, Py_ssize_t size)
{
if (size < 0) {
size = (Py_ssize_t)strlen(str);
}

return _PyUnicodeWriter_WriteASCIIString((_PyUnicodeWriter*)writer,
str, size);
}

static inline int
PyUnicodeWriter_WriteWideChar(PyUnicodeWriter *writer,
const wchar_t *str, Py_ssize_t size)
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7 changes: 6 additions & 1 deletion tests/test_pythoncapi_compat_cext.c
Original file line number Diff line number Diff line change
Expand Up @@ -1847,6 +1847,11 @@ test_unicodewriter(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(args))
goto error;
}

// test PyUnicodeWriter_WriteASCII()
if (PyUnicodeWriter_WriteASCII(writer, " non-ASCII", -1) < 0) {
goto error;
}

// test PyUnicodeWriter_WriteUTF8()
if (PyUnicodeWriter_WriteUTF8(writer, " valu\xC3\xA9", -1) < 0) {
goto error;
Expand All @@ -1870,7 +1875,7 @@ test_unicodewriter(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(args))
if (result == NULL) {
return NULL;
}
assert(PyUnicode_EqualToUTF8(result, "var=long valu\xC3\xA9 'repr'"));
assert(PyUnicode_EqualToUTF8(result, "var=long non-ASCII valu\xC3\xA9 'repr'"));
Py_DECREF(result);
}

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