/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Python 3                                                                     │
│ https://docs.python.org/3/license.html                                       │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "third_party/python/Include/abstract.h"
#include "third_party/python/Include/object.h"
#include "third_party/python/Include/pyerrors.h"
#include "third_party/python/Include/pylifecycle.h"
#include "third_party/python/Include/sysmodule.h"
/* clang-format off */

_Py_IDENTIFIER(flush);
_Py_IDENTIFIER(stdout);
_Py_IDENTIFIER(stderr);

static int
file_is_closed(PyObject *fobj)
{
    int r;
    PyObject *tmp = PyObject_GetAttrString(fobj, "closed");
    if (tmp == NULL) {
        PyErr_Clear();
        return 0;
    }
    r = PyObject_IsTrue(tmp);
    Py_DECREF(tmp);
    if (r < 0)
        PyErr_Clear();
    return r > 0;
}

int
_Py_FlushStdFiles(void)
{
    PyObject *fout = _PySys_GetObjectId(&PyId_stdout);
    PyObject *ferr = _PySys_GetObjectId(&PyId_stderr);
    PyObject *tmp;
    int status = 0;
    if (fout != NULL && fout != Py_None && !file_is_closed(fout)) {
        tmp = _PyObject_CallMethodId(fout, &PyId_flush, NULL);
        if (tmp == NULL) {
            PyErr_WriteUnraisable(fout);
            status = -1;
        }
        else
            Py_DECREF(tmp);
    }
    if (ferr != NULL && ferr != Py_None && !file_is_closed(ferr)) {
        tmp = _PyObject_CallMethodId(ferr, &PyId_flush, NULL);
        if (tmp == NULL) {
            PyErr_Clear();
            status = -1;
        }
        else
            Py_DECREF(tmp);
    }
    return status;
}