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bpo-29240: readline now ignores the UTF-8 Mode (#5145) 

Add new fuctions ignoring the UTF-8 mode:

* _Py_DecodeCurrentLocale()
* _Py_EncodeCurrentLocale()
* _PyUnicode_DecodeCurrentLocaleAndSize()
* _PyUnicode_EncodeCurrentLocale()

Modify the readline module to use these functions.

Re-enable test_readline.test_nonascii().
This commit is contained in:
Victor Stinner 2018-01-10 22:46:15 +01:00 committed by GitHub
parent f80c0ca133
commit 2cba6b8579
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 126 additions and 43 deletions
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8
Include/fileutils.h
View File

@ -24,6 +24,14 @@ PyAPI_FUNC(wchar_t*) _Py_DecodeUTF8_surrogateescape(
const char *s,
Py_ssize_t size,
size_t *p_wlen);
PyAPI_FUNC(wchar_t *) _Py_DecodeCurrentLocale(
const char *arg,
size_t *size);
PyAPI_FUNC(char*) _Py_EncodeCurrentLocale(
const wchar_t *text,
size_t *error_pos);
#endif
#ifndef Py_LIMITED_API

10
Include/unicodeobject.h
View File

@ -1810,6 +1810,16 @@ PyAPI_FUNC(PyObject*) PyUnicode_EncodeLocale(
PyObject *unicode,
const char *errors
);
PyAPI_FUNC(PyObject*) _PyUnicode_DecodeCurrentLocaleAndSize(
const char *str,
Py_ssize_t len,
const char *errors);
PyAPI_FUNC(PyObject*) _PyUnicode_EncodeCurrentLocale(
PyObject *unicode,
const char *errors
);
#endif
/* --- File system encoding ---------------------------------------------- */

2
Lib/test/test_readline.py
View File

@ -152,8 +152,6 @@ print("History length:", readline.get_current_history_length())
output = run_pty(self.auto_history_script.format(False))
self.assertIn(b"History length: 0\r\n", output)
@unittest.skipIf(True,
"FIXME: test broken by bpo-29240")
def test_nonascii(self):
try:
readline.add_history("\xEB\xEF")

5
Modules/readline.c
View File

@ -132,13 +132,14 @@ static PyModuleDef readlinemodule;
static PyObject *
encode(PyObject *b)
{
return PyUnicode_EncodeLocale(b, "surrogateescape");
return _PyUnicode_EncodeCurrentLocale(b, "surrogateescape");
}
static PyObject *
decode(const char *s)
{
return PyUnicode_DecodeLocale(s, "surrogateescape");
return _PyUnicode_DecodeCurrentLocaleAndSize(s, strlen(s),
"surrogateescape");
}

62
Objects/unicodeobject.c
View File

@ -3395,8 +3395,8 @@ locale_error_handler(const char *errors, int *surrogateescape)
}
}
PyObject *
PyUnicode_EncodeLocale(PyObject *unicode, const char *errors)
static PyObject *
unicode_encode_locale(PyObject *unicode, const char *errors, int current_locale)
{
Py_ssize_t wlen, wlen2;
wchar_t *wstr;
@ -3423,7 +3423,12 @@ PyUnicode_EncodeLocale(PyObject *unicode, const char *errors)
/* "surrogateescape" error handler */
char *str;
str = Py_EncodeLocale(wstr, &error_pos);
if (current_locale) {
str = _Py_EncodeCurrentLocale(wstr, &error_pos);
}
else {
str = Py_EncodeLocale(wstr, &error_pos);
}
if (str == NULL) {
if (error_pos == (size_t)-1) {
PyErr_NoMemory();
@ -3437,7 +3442,12 @@ PyUnicode_EncodeLocale(PyObject *unicode, const char *errors)
PyMem_Free(wstr);
bytes = PyBytes_FromString(str);
PyMem_Free(str);
if (current_locale) {
PyMem_RawFree(str);
}
else {
PyMem_Free(str);
}
}
else {
/* strict mode */
@ -3502,6 +3512,18 @@ encode_error:
return NULL;
}
PyObject *
PyUnicode_EncodeLocale(PyObject *unicode, const char *errors)
{
return unicode_encode_locale(unicode, errors, 0);
}
PyObject *
_PyUnicode_EncodeCurrentLocale(PyObject *unicode, const char *errors)
{
return unicode_encode_locale(unicode, errors, 1);
}
PyObject *
PyUnicode_EncodeFSDefault(PyObject *unicode)
{
@ -3524,7 +3546,8 @@ PyUnicode_EncodeFSDefault(PyObject *unicode)
Py_FileSystemDefaultEncodeErrors);
}
else {
return PyUnicode_EncodeLocale(unicode, Py_FileSystemDefaultEncodeErrors);
return unicode_encode_locale(unicode,
Py_FileSystemDefaultEncodeErrors, 0);
}
#endif
}
@ -3695,9 +3718,9 @@ mbstowcs_errorpos(const char *str, size_t len)
return 0;
}
PyObject*
PyUnicode_DecodeLocaleAndSize(const char *str, Py_ssize_t len,
const char *errors)
static PyObject*
unicode_decode_locale(const char *str, Py_ssize_t len, const char *errors,
int current_locale)
{
wchar_t smallbuf[256];
size_t smallbuf_len = Py_ARRAY_LENGTH(smallbuf);
@ -3719,7 +3742,12 @@ PyUnicode_DecodeLocaleAndSize(const char *str, Py_ssize_t len,
if (surrogateescape) {
/* "surrogateescape" error handler */
wstr = Py_DecodeLocale(str, &wlen);
if (current_locale) {
wstr = _Py_DecodeCurrentLocale(str, &wlen);
}
else {
wstr = Py_DecodeLocale(str, &wlen);
}
if (wstr == NULL) {
if (wlen == (size_t)-1)
PyErr_NoMemory();
@ -3794,11 +3822,25 @@ decode_error:
return NULL;
}
PyObject*
PyUnicode_DecodeLocaleAndSize(const char *str, Py_ssize_t len,
const char *errors)
{
return unicode_decode_locale(str, len, errors, 0);
}
PyObject*
_PyUnicode_DecodeCurrentLocaleAndSize(const char *str, Py_ssize_t len,
const char *errors)
{
return unicode_decode_locale(str, len, errors, 1);
}
PyObject*
PyUnicode_DecodeLocale(const char *str, const char *errors)
{
Py_ssize_t size = (Py_ssize_t)strlen(str);
return PyUnicode_DecodeLocaleAndSize(str, size, errors);
return unicode_decode_locale(str, size, errors, 0);
}

82
Python/fileutils.c
View File

@ -263,7 +263,7 @@ decode_ascii_surrogateescape(const char *arg, size_t *size)
#if !defined(__APPLE__) && !defined(__ANDROID__)
static wchar_t*
decode_locale(const char* arg, size_t *size)
decode_current_locale(const char* arg, size_t *size)
{
wchar_t *res;
size_t argsize;
@ -380,6 +380,38 @@ oom:
#endif
static wchar_t*
decode_locale(const char* arg, size_t *size, int ignore_utf8_mode)
{
#if defined(__APPLE__) || defined(__ANDROID__)
return _Py_DecodeUTF8_surrogateescape(arg, strlen(arg), size);
#else
if (!ignore_utf8_mode && Py_UTF8Mode == 1) {
return _Py_DecodeUTF8_surrogateescape(arg, strlen(arg), size);
}
#ifndef MS_WINDOWS
if (force_ascii == -1)
force_ascii = check_force_ascii();
if (force_ascii) {
/* force ASCII encoding to workaround mbstowcs() issue */
wchar_t *wstr = decode_ascii_surrogateescape(arg, size);
if (wstr == NULL) {
if (size != NULL) {
*size = (size_t)-1;
}
return NULL;
}
return wstr;
}
#endif
return decode_current_locale(arg, size);
#endif /* __APPLE__ or __ANDROID__ */
}
/* Decode a byte string from the locale encoding with the
surrogateescape error handler: undecodable bytes are decoded as characters
in range U+DC80..U+DCFF. If a byte sequence can be decoded as a surrogate
@ -402,32 +434,15 @@ oom:
wchar_t*
Py_DecodeLocale(const char* arg, size_t *size)
{
#if defined(__APPLE__) || defined(__ANDROID__)
return _Py_DecodeUTF8_surrogateescape(arg, strlen(arg), size);
#else
if (Py_UTF8Mode == 1) {
return _Py_DecodeUTF8_surrogateescape(arg, strlen(arg), size);
}
return decode_locale(arg, size, 0);
}
#ifndef MS_WINDOWS
if (force_ascii == -1)
force_ascii = check_force_ascii();
if (force_ascii) {
/* force ASCII encoding to workaround mbstowcs() issue */
wchar_t *wstr = decode_ascii_surrogateescape(arg, size);
if (wstr == NULL) {
if (size != NULL) {
*size = (size_t)-1;
}
return NULL;
}
return wstr;
}
#endif
return decode_locale(arg, size);
#endif /* __APPLE__ or __ANDROID__ */
/* Similar to Py_DecodeLocale() but ignore the UTF-8 mode */
wchar_t*
_Py_DecodeCurrentLocale(const char* arg, size_t *size)
{
return decode_locale(arg, size, 1);
}
@ -508,12 +523,13 @@ encode_current_locale(const wchar_t *text, size_t *error_pos, int raw_malloc)
#endif
static char*
encode_locale(const wchar_t *text, size_t *error_pos, int raw_malloc)
encode_locale(const wchar_t *text, size_t *error_pos,
int raw_malloc, int ignore_utf8_mode)
{
#if defined(__APPLE__) || defined(__ANDROID__)
return _Py_EncodeUTF8_surrogateescape(text, error_pos, raw_malloc);
#else /* __APPLE__ */
if (Py_UTF8Mode == 1) {
if (!ignore_utf8_mode && Py_UTF8Mode == 1) {
return _Py_EncodeUTF8_surrogateescape(text, error_pos, raw_malloc);
}
@ -544,7 +560,7 @@ encode_locale(const wchar_t *text, size_t *error_pos, int raw_malloc)
char*
Py_EncodeLocale(const wchar_t *text, size_t *error_pos)
{
return encode_locale(text, error_pos, 0);
return encode_locale(text, error_pos, 0, 0);
}
@ -553,7 +569,15 @@ Py_EncodeLocale(const wchar_t *text, size_t *error_pos)
char*
_Py_EncodeLocaleRaw(const wchar_t *text, size_t *error_pos)
{
return encode_locale(text, error_pos, 1);
return encode_locale(text, error_pos, 1, 0);
}
/* Similar to _Py_EncodeLocaleRaw() but ignore the UTF-8 Mode */
char*
_Py_EncodeCurrentLocale(const wchar_t *text, size_t *error_pos)
{
return encode_locale(text, error_pos, 1, 1);
}