https://github.com/python/cpython/commit/d7365e60500bea91383010a4bf9e26ff3acdfaa1
commit: d7365e60500bea91383010a4bf9e26ff3acdfaa1
branch: main
author: alexey semenyuk <alexsemenyu...@gmail.com>
committer: vstinner <vstin...@python.org>
date: 2025-04-24T17:43:48+02:00
summary:
gh-132162: Add tests for Py_UniversalNewlineFgets() (#132164)
files:
M Lib/test/test_capi/test_file.py
M Modules/_testcapi/clinic/file.c.h
M Modules/_testcapi/file.c
diff --git a/Lib/test/test_capi/test_file.py b/Lib/test/test_capi/test_file.py
index 1a55c761054e44..7c1e0026188be4 100644
--- a/Lib/test/test_capi/test_file.py
+++ b/Lib/test/test_capi/test_file.py
@@ -294,7 +294,28 @@ def test_py_fopen(self):
# CRASHES py_fopen(NULL, 'rb')
# CRASHES py_fopen(__file__, NULL)
- # TODO: Test Py_UniversalNewlineFgets()
+ def test_py_universalnewlinefgets(self):
+ py_universalnewlinefgets = _testcapi.py_universalnewlinefgets
+ filename = os_helper.TESTFN
+ self.addCleanup(os_helper.unlink, filename)
+
+ with open(filename, "wb") as fp:
+ fp.write(b"line1\nline2")
+
+ line = py_universalnewlinefgets(filename, 1000)
+ self.assertEqual(line, b"line1\n")
+
+ with open(filename, "wb") as fp:
+ fp.write(b"line2\r\nline3")
+
+ line = py_universalnewlinefgets(filename, 1000)
+ self.assertEqual(line, b"line2\n")
+
+ with open(filename, "wb") as fp:
+ fp.write(b"line3\rline4")
+
+ line = py_universalnewlinefgets(filename, 1000)
+ self.assertEqual(line, b"line3\n")
# PyFile_SetOpenCodeHook() and PyFile_OpenCode() are tested by
# test_embed.test_open_code_hook()
diff --git a/Modules/_testcapi/clinic/file.c.h
b/Modules/_testcapi/clinic/file.c.h
index 6efb6b47353443..08df729cb97738 100644
--- a/Modules/_testcapi/clinic/file.c.h
+++ b/Modules/_testcapi/clinic/file.c.h
@@ -61,4 +61,38 @@ _testcapi_py_fopen(PyObject *module, PyObject *const *args,
Py_ssize_t nargs)
exit:
return return_value;
}
-/*[clinic end generated code: output=e943bbd7f181d079 input=a9049054013a1b77]*/
+
+PyDoc_STRVAR(_testcapi_py_universalnewlinefgets__doc__,
+"py_universalnewlinefgets($module, file, size, /)\n"
+"--\n"
+"\n"
+"Read a line from a file using Py_UniversalNewlineFgets.");
+
+#define _TESTCAPI_PY_UNIVERSALNEWLINEFGETS_METHODDEF \
+ {"py_universalnewlinefgets",
_PyCFunction_CAST(_testcapi_py_universalnewlinefgets), METH_FASTCALL,
_testcapi_py_universalnewlinefgets__doc__},
+
+static PyObject *
+_testcapi_py_universalnewlinefgets_impl(PyObject *module, PyObject *file,
+ int size);
+
+static PyObject *
+_testcapi_py_universalnewlinefgets(PyObject *module, PyObject *const *args,
Py_ssize_t nargs)
+{
+ PyObject *return_value = NULL;
+ PyObject *file;
+ int size;
+
+ if (!_PyArg_CheckPositional("py_universalnewlinefgets", nargs, 2, 2)) {
+ goto exit;
+ }
+ file = args[0];
+ size = PyLong_AsInt(args[1]);
+ if (size == -1 && PyErr_Occurred()) {
+ goto exit;
+ }
+ return_value = _testcapi_py_universalnewlinefgets_impl(module, file, size);
+
+exit:
+ return return_value;
+}
+/*[clinic end generated code: output=a5ed111054e3a0bc input=a9049054013a1b77]*/
diff --git a/Modules/_testcapi/file.c b/Modules/_testcapi/file.c
index 060e0f50598d7e..399f84f5541b28 100644
--- a/Modules/_testcapi/file.c
+++ b/Modules/_testcapi/file.c
@@ -57,9 +57,50 @@ _testcapi_py_fopen_impl(PyObject *module, PyObject *path,
const char *mode,
}
+/*[clinic input]
+_testcapi.py_universalnewlinefgets
+
+ file: object
+ size: int
+ /
+
+Read a line from a file using Py_UniversalNewlineFgets.
+[clinic start generated code]*/
+
+static PyObject *
+_testcapi_py_universalnewlinefgets_impl(PyObject *module, PyObject *file,
+ int size)
+/*[clinic end generated code: output=2ce1bc76c9dc871c input=02c236049d18569a]*/
+{
+ FILE *fp = Py_fopen(file, "rb");
+ if (fp == NULL) {
+ return NULL;
+ }
+
+ char *buf = (char *)PyMem_Malloc(size);
+ if (buf == NULL) {
+ Py_fclose(fp);
+ return PyErr_NoMemory();
+ }
+
+ char *result = Py_UniversalNewlineFgets(buf, size, fp, NULL);
+ if (result == NULL) {
+ PyMem_Free(buf);
+ Py_fclose(fp);
+ Py_RETURN_NONE;
+ }
+
+ PyObject *line = PyBytes_FromString(result);
+ PyMem_Free(buf);
+ Py_fclose(fp);
+
+ return line;
+}
+
static PyMethodDef test_methods[] = {
_TESTCAPI_PYFILE_NEWSTDPRINTER_METHODDEF
_TESTCAPI_PY_FOPEN_METHODDEF
+ _TESTCAPI_PY_UNIVERSALNEWLINEFGETS_METHODDEF
{NULL},
};
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