cpython/Modules/_testcapi/object.c at master · devgobind/cpython · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
#include "parts.h"
#include "util.h"

static PyObject *
call_pyobject_print(PyObject *self, PyObject * args)
{
    PyObject *object;
    PyObject *filename;
    PyObject *print_raw;
    FILE *fp;
    int flags = 0;

    if (!PyArg_UnpackTuple(args, "call_pyobject_print", 3, 3,
                           &object, &filename, &print_raw)) {
        return NULL;
    }

    fp = _Py_fopen_obj(filename, "w+");

    if (Py_IsTrue(print_raw)) {
        flags = Py_PRINT_RAW;
    }

    if (PyObject_Print(object, fp, flags) < 0) {
        fclose(fp);
        return NULL;
    }

    fclose(fp);

    Py_RETURN_NONE;
}

static PyObject *
pyobject_print_null(PyObject *self, PyObject *args)
{
    PyObject *filename;
    FILE *fp;

    if (!PyArg_UnpackTuple(args, "call_pyobject_print", 1, 1, &filename)) {
        return NULL;
    }

    fp = _Py_fopen_obj(filename, "w+");

    if (PyObject_Print(NULL, fp, 0) < 0) {
        fclose(fp);
        return NULL;
    }

    fclose(fp);

    Py_RETURN_NONE;
}

static PyObject *
pyobject_print_noref_object(PyObject *self, PyObject *args)
{
    PyObject *test_string;
    PyObject *filename;
    FILE *fp;
    char correct_string[100];

    test_string = PyUnicode_FromString("Spam spam spam");

    Py_SET_REFCNT(test_string, 0);

    PyOS_snprintf(correct_string, 100, "<refcnt %zd at %p>",
                  Py_REFCNT(test_string), (void *)test_string);

    if (!PyArg_UnpackTuple(args, "call_pyobject_print", 1, 1, &filename)) {
        return NULL;
    }

    fp = _Py_fopen_obj(filename, "w+");

    if (PyObject_Print(test_string, fp, 0) < 0){
        fclose(fp);
        Py_SET_REFCNT(test_string, 1);
        Py_DECREF(test_string);
        return NULL;
    }

    fclose(fp);

    Py_SET_REFCNT(test_string, 1);
    Py_DECREF(test_string);

    return PyUnicode_FromString(correct_string);
}

static PyObject *
pyobject_print_os_error(PyObject *self, PyObject *args)
{
    PyObject *test_string;
    PyObject *filename;
    FILE *fp;

    test_string = PyUnicode_FromString("Spam spam spam");

    if (!PyArg_UnpackTuple(args, "call_pyobject_print", 1, 1, &filename)) {
        return NULL;
    }

    // open file in read mode to induce OSError
    fp = _Py_fopen_obj(filename, "r");

    if (PyObject_Print(test_string, fp, 0) < 0) {
        fclose(fp);
        Py_DECREF(test_string);
        return NULL;
    }

    fclose(fp);
    Py_DECREF(test_string);

    Py_RETURN_NONE;
}

static PyMethodDef test_methods[] = {
    {"call_pyobject_print", call_pyobject_print, METH_VARARGS},
    {"pyobject_print_null", pyobject_print_null, METH_VARARGS},
    {"pyobject_print_noref_object", pyobject_print_noref_object, METH_VARARGS},
    {"pyobject_print_os_error", pyobject_print_os_error, METH_VARARGS},

    {NULL},
};

int
_PyTestCapi_Init_Object(PyObject *m)
{
    if (PyModule_AddFunctions(m, test_methods) < 0) {
        return -1;
    }

    return 0;
}