Issue #19543: Emit deprecation warning for known non-text encodings.

Backported issues #19619: encode() and decode() methods and constructors
of str, unicode and bytearray classes now emit deprecation warning for known
non-text encodings when Python is ran with the -3 option.

Backported issues #20404: io.TextIOWrapper (and hence io.open()) now uses the
internal codec marking system added to emit deprecation warning for known non-text
encodings at stream construction time when Python is ran with the -3 option.

3 files changed, 9 insertions, 9 deletions

diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index fd201ca..5f57580 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -783,7 +783,7 @@ bytearray_init(PyByteArrayObject *self, PyObject *args, PyObject *kwds)
     if (PyBytes_Check(arg)) {
         PyObject *new, *encoded;
         if (encoding != NULL) {
-            encoded = PyCodec_Encode(arg, encoding, errors);
+            encoded = _PyCodec_EncodeText(arg, encoding, errors);
             if (encoded == NULL)
                 return -1;
             assert(PyBytes_Check(encoded));
@@ -809,7 +809,7 @@ bytearray_init(PyByteArrayObject *self, PyObject *args, PyObject *kwds)
                             "unicode argument without an encoding");
             return -1;
         }
-        encoded = PyCodec_Encode(arg, encoding, errors);
+        encoded = _PyCodec_EncodeText(arg, encoding, errors);
         if (encoded == NULL)
             return -1;
         assert(PyBytes_Check(encoded));
@@ -2567,7 +2567,7 @@ bytearray_decode(PyObject *self, PyObject *args, PyObject *kwargs)
         return NULL;
 #endif
     }
-    return PyCodec_Decode(self, encoding, errors);
+    return _PyCodec_DecodeText(self, encoding, errors);
 }
 
 PyDoc_STRVAR(alloc_doc,
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 46f46db..c1e12a7 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -449,7 +449,7 @@ PyObject *PyString_AsDecodedObject(PyObject *str,
     }
 
     /* Decode via the codec registry */
-    v = PyCodec_Decode(str, encoding, errors);
+    v = _PyCodec_DecodeText(str, encoding, errors);
     if (v == NULL)
         goto onError;
 
@@ -529,7 +529,7 @@ PyObject *PyString_AsEncodedObject(PyObject *str,
     }
 
     /* Encode via the codec registry */
-    v = PyCodec_Encode(str, encoding, errors);
+    v = _PyCodec_EncodeText(str, encoding, errors);
     if (v == NULL)
         goto onError;
 
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 91e7524..08723ac 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -1259,7 +1259,7 @@ PyObject *PyUnicode_Decode(const char *s,
     buffer = PyBuffer_FromMemory((void *)s, size);
     if (buffer == NULL)
         goto onError;
-    unicode = PyCodec_Decode(buffer, encoding, errors);
+    unicode = _PyCodec_DecodeText(buffer, encoding, errors);
     if (unicode == NULL)
         goto onError;
     if (!PyUnicode_Check(unicode)) {
@@ -1292,7 +1292,7 @@ PyObject *PyUnicode_AsDecodedObject(PyObject *unicode,
         encoding = PyUnicode_GetDefaultEncoding();
 
     /* Decode via the codec registry */
-    v = PyCodec_Decode(unicode, encoding, errors);
+    v = _PyCodec_DecodeText(unicode, encoding, errors);
     if (v == NULL)
         goto onError;
     return v;
@@ -1331,7 +1331,7 @@ PyObject *PyUnicode_AsEncodedObject(PyObject *unicode,
         encoding = PyUnicode_GetDefaultEncoding();
 
     /* Encode via the codec registry */
-    v = PyCodec_Encode(unicode, encoding, errors);
+    v = _PyCodec_EncodeText(unicode, encoding, errors);
     if (v == NULL)
         goto onError;
     return v;
@@ -1369,7 +1369,7 @@ PyObject *PyUnicode_AsEncodedString(PyObject *unicode,
     }
 
     /* Encode via the codec registry */
-    v = PyCodec_Encode(unicode, encoding, errors);
+    v = _PyCodec_EncodeText(unicode, encoding, errors);
     if (v == NULL)
         goto onError;
     if (!PyString_Check(v)) {