Use the new Unicode API

* Replace PyUnicode_FromUnicode(NULL, 0) by PyUnicode_New(0, 0)
 * Replce PyUnicode_FromUnicode(str, len) by PyUnicode_FromWideChar(str, len)
 * Replace Py_UNICODE by wchar_t
 * posix_putenv() uses PyUnicode_FromFormat() to create the string, instead
   of PyUnicode_FromUnicode() + _snwprintf()

Modules/_ctypes/_ctypes.c

@@ -4255,7 +4255,7 @@ Array_subscript(PyObject *_self, PyObject *item)
             wchar_t *dest;
 
             if (slicelen <= 0)
-                return PyUnicode_FromUnicode(NULL, 0);
+                return PyUnicode_New(0, 0);
             if (step == 1) {
                 return PyUnicode_FromWideChar(ptr + start,
                                               slicelen);
@@ -4930,7 +4930,7 @@ Pointer_subscript(PyObject *_self, PyObject *item)
             wchar_t *dest;
 
             if (len <= 0)
-                return PyUnicode_FromUnicode(NULL, 0);
+                return PyUnicode_New(0, 0);
             if (step == 1) {
                 return PyUnicode_FromWideChar(ptr + start,
                                               len);

Modules/posixmodule.c

@@ -2599,7 +2599,7 @@ posix_listdir(PyObject *self, PyObject *args)
             /* Skip over . and .. */
             if (wcscmp(wFileData.cFileName, L".") != 0 &&
                 wcscmp(wFileData.cFileName, L"..") != 0) {
-                v = PyUnicode_FromUnicode(wFileData.cFileName, wcslen(wFileData.cFileName));
+                v = PyUnicode_FromWideChar(wFileData.cFileName, wcslen(wFileData.cFileName));
                 if (v == NULL) {
                     Py_DECREF(d);
                     d = NULL;
@@ -2967,7 +2967,7 @@ posix__getfullpathname(PyObject *self, PyObject *args)
             result = GetFullPathNameW(wpath, result, woutbufp, &wtemp);
         }
         if (result)
-            v = PyUnicode_FromUnicode(woutbufp, wcslen(woutbufp));
+            v = PyUnicode_FromWideChar(woutbufp, wcslen(woutbufp));
         else
             v = win32_error_object("GetFullPathNameW", po);
         if (woutbufp != woutbuf)
@@ -3054,7 +3054,7 @@ posix__getfinalpathname(PyObject *self, PyObject *args)
         return win32_error_object("CloseHandle", po);
 
     target_path[result_length] = 0;
-    result = PyUnicode_FromUnicode(target_path, result_length);
+    result = PyUnicode_FromWideChar(target_path, result_length);
     free(target_path);
     return result;
 
@@ -7750,7 +7750,7 @@ static PyObject *
 posix_putenv(PyObject *self, PyObject *args)
 {
 #ifdef MS_WINDOWS
-    wchar_t *s1, *s2;
+    PyObject *s1, *s2;
     wchar_t *newenv;
 #else
     PyObject *os1, *os2;
@@ -7762,7 +7762,7 @@ posix_putenv(PyObject *self, PyObject *args)
 
 #ifdef MS_WINDOWS
     if (!PyArg_ParseTuple(args,
-                          "uu:putenv",
+                          "UU:putenv",
                           &s1, &s2))
         return NULL;
 #else
@@ -7799,26 +7799,26 @@ posix_putenv(PyObject *self, PyObject *args)
     /* len includes space for a trailing \0; the size arg to
        PyBytes_FromStringAndSize does not count that */
 #ifdef MS_WINDOWS
-    len = wcslen(s1) + wcslen(s2) + 2;
-    newstr = PyUnicode_FromUnicode(NULL, (int)len - 1);
-#else
-    len = PyBytes_GET_SIZE(os1) + PyBytes_GET_SIZE(os2) + 2;
-    newstr = PyBytes_FromStringAndSize(NULL, (int)len - 1);
-#endif
+    newstr = PyUnicode_FromFormat("%U=%U", s1, s2);
     if (newstr == NULL) {
         PyErr_NoMemory();
         goto error;
     }
-#ifdef MS_WINDOWS
     newenv = PyUnicode_AsUnicode(newstr);
     if (newenv == NULL)
         goto error;
-    _snwprintf(newenv, len, L"%s=%s", s1, s2);
     if (_wputenv(newenv)) {
         posix_error();
         goto error;
     }
 #else
+    len = PyBytes_GET_SIZE(os1) + PyBytes_GET_SIZE(os2) + 2;
+    newstr = PyBytes_FromStringAndSize(NULL, (int)len - 1);
+    if (newstr == NULL) {
+        PyErr_NoMemory();
+        goto error;
+    }
+
     newenv = PyBytes_AS_STRING(newstr);
     PyOS_snprintf(newenv, len, "%s=%s", s1, s2);
     if (putenv(newenv)) {

Modules/socketmodule.c

@@ -3900,7 +3900,7 @@ socket_gethostname(PyObject *self, PyObject *unused)
     PyObject *result;
 
     if (GetComputerNameExW(ComputerNamePhysicalDnsHostname, buf, &size))
-        return PyUnicode_FromUnicode(buf, size);
+        return PyUnicode_FromWideChar(buf, size);
 
     if (GetLastError() != ERROR_MORE_DATA)
         return PyErr_SetFromWindowsErr(0);

Objects/abstract.c

@@ -701,7 +701,7 @@ PyObject_Format(PyObject *obj, PyObject *format_spec)
 
     /* If no format_spec is provided, use an empty string */
     if (format_spec == NULL) {
-        empty = PyUnicode_FromUnicode(NULL, 0);
+        empty = PyUnicode_New(0, 0);
         format_spec = empty;
     }
 

PC/_msi.c

@@ -18,7 +18,7 @@ static PyObject*
 uuidcreate(PyObject* obj, PyObject*args)
 {
     UUID result;
-    unsigned short *cresult;
+    wchar_t *cresult;
     PyObject *oresult;
 
     /* May return ok, local only, and no address.
@@ -35,7 +35,7 @@ uuidcreate(PyObject* obj, PyObject*args)
         return NULL;
     }
 
-    oresult = PyUnicode_FromUnicode(cresult, wcslen(cresult));
+    oresult = PyUnicode_FromWideChar(cresult, wcslen(cresult));
     RpcStringFreeW(&cresult);
     return oresult;
 
@@ -379,7 +379,7 @@ record_getstring(msiobj* record, PyObject* args)
     }
     if (status != ERROR_SUCCESS)
         return msierror((int) status);
-    string = PyUnicode_FromUnicode(res, size);
+    string = PyUnicode_FromWideChar(res, size);
     if (buf != res)
         free(res);
     return string;
@@ -401,7 +401,7 @@ record_setstring(msiobj* record, PyObject *args)
 {
     int status;
     int field;
-    Py_UNICODE *data;
+    wchar_t *data;
 
     if (!PyArg_ParseTuple(args, "iu:SetString", &field, &data))
         return NULL;
@@ -418,7 +418,7 @@ record_setstream(msiobj* record, PyObject *args)
 {
     int status;
     int field;
-    Py_UNICODE *data;
+    wchar_t *data;
 
     if (!PyArg_ParseTuple(args, "iu:SetStream", &field, &data))
         return NULL;

PC/_subprocess.c

@@ -419,14 +419,14 @@ sp_CreateProcess(PyObject* self, PyObject* args)
     PyObject* environment;
     wchar_t *wenvironment;
 
-    Py_UNICODE* application_name;
-    Py_UNICODE* command_line;
+    wchar_t* application_name;
+    wchar_t* command_line;
     PyObject* process_attributes; /* ignored */
     PyObject* thread_attributes; /* ignored */
     int inherit_handles;
     int creation_flags;
     PyObject* env_mapping;
-    Py_UNICODE* current_directory;
+    wchar_t* current_directory;
     PyObject* startup_info;
 
     if (! PyArg_ParseTuple(args, "ZZOOiiOZO:CreateProcess",
@@ -454,15 +454,10 @@ sp_CreateProcess(PyObject* self, PyObject* args)
     if (PyErr_Occurred())
         return NULL;
 
-    if (env_mapping == Py_None)
-        environment = NULL;
-    else {
+    if (env_mapping != Py_None) {
         environment = getenvironment(env_mapping);
         if (! environment)
             return NULL;
-    }
-
-    if (environment) {
         wenvironment = PyUnicode_AsUnicode(environment);
         if (wenvironment == NULL)
         {
@@ -470,8 +465,10 @@ sp_CreateProcess(PyObject* self, PyObject* args)
             return NULL;
         }
     }
-    else
+    else {
+        environment = NULL;
         wenvironment = NULL;
+    }
 
     Py_BEGIN_ALLOW_THREADS
     result = CreateProcessW(application_name,

PC/msvcrtmodule.c

@@ -211,7 +211,7 @@ cannot be read with this function.");
 static PyObject *
 msvcrt_getwch(PyObject *self, PyObject *args)
 {
-    Py_UNICODE ch;
+    wchar_t ch;
 
     if (!PyArg_ParseTuple(args, ":getwch"))
         return NULL;
@@ -254,7 +254,7 @@ a printable character.");
 static PyObject *
 msvcrt_getwche(PyObject *self, PyObject *args)
 {
-    Py_UNICODE ch;
+    wchar_t ch;
 
     if (!PyArg_ParseTuple(args, ":getwche"))
         return NULL;

PC/winreg.c

@@ -1227,8 +1227,8 @@ PyEnumValue(PyObject *self, PyObject *args)
 static PyObject *
 PyExpandEnvironmentStrings(PyObject *self, PyObject *args)
 {
-    Py_UNICODE *retValue = NULL;
-    Py_UNICODE *src;
+    wchar_t *retValue = NULL;
+    wchar_t *src;
     DWORD retValueSize;
     DWORD rc;
     PyObject *o;
@@ -1241,7 +1241,7 @@ PyExpandEnvironmentStrings(PyObject *self, PyObject *args)
         return PyErr_SetFromWindowsErrWithFunction(retValueSize,
                                         "ExpandEnvironmentStrings");
     }
-    retValue = (Py_UNICODE *)PyMem_Malloc(retValueSize * sizeof(Py_UNICODE));
+    retValue = (wchar_t *)PyMem_Malloc(retValueSize * sizeof(wchar_t));
     if (retValue == NULL) {
         return PyErr_NoMemory();
     }
@@ -1252,7 +1252,7 @@ PyExpandEnvironmentStrings(PyObject *self, PyObject *args)
         return PyErr_SetFromWindowsErrWithFunction(retValueSize,
                                         "ExpandEnvironmentStrings");
     }
-    o = PyUnicode_FromUnicode(retValue, wcslen(retValue));
+    o = PyUnicode_FromWideChar(retValue, wcslen(retValue));
     PyMem_Free(retValue);
     return o;
 }
@@ -1537,7 +1537,7 @@ PySetValueEx(PyObject *self, PyObject *args)
 {
     HKEY hKey;
     PyObject *obKey;
-    Py_UNICODE *valueName;
+    wchar_t *valueName;
     PyObject *obRes;
     PyObject *value;
     BYTE *data;

PC/winsound.c

@@ -72,7 +72,7 @@ PyDoc_STRVAR(sound_module_doc,
 static PyObject *
 sound_playsound(PyObject *s, PyObject *args)
 {
-    Py_UNICODE *wsound;
+    wchar_t *wsound;
     int flags;
     int ok;
 

Python/dynload_win.c

@@ -249,7 +249,7 @@ dl_funcptr _PyImport_GetDynLoadWindows(const char *shortname,
                     "DLL load failed: ");
 
                 PyUnicode_AppendAndDel(&message,
-                    PyUnicode_FromUnicode(
+                    PyUnicode_FromWideChar(
                         theInfo,
                         theLength));
             }