other read-buffer compatible objects pass back a reference to the raw internal
data representation.
+``s*`` (string, Unicode, or any buffer compatible object) [Py_buffer \*]
+ Similar to ``s#``, this code fills a Py_buffer structure provided by the caller.
+ The buffer gets locked, so that the caller can subsequently use the buffer even
+ inside a ``Py_BEGIN_ALLOW_THREADS`` block; the caller is responsible for calling
+ ``PyBuffer_Release`` with the structure after it has processed the data.
+
+ .. versionadded:: 2.6
+
``z`` (string or ``None``) [const char \*]
Like ``s``, but the Python object may also be ``None``, in which case the C
pointer is set to *NULL*.
``z#`` (string or ``None`` or any read buffer compatible object) [const char \*, int]
This is to ``s#`` as ``z`` is to ``s``.
+``z*`` (string or ``None`` or any buffer compatible object) [Py_buffer*]
+ This is to ``s*`` as ``z`` is to ``s``.
+ .. versionadded:: 2.6
+
``u`` (Unicode object) [Py_UNICODE \*]
Convert a Python Unicode object to a C pointer to a NUL-terminated buffer of
16-bit Unicode (UTF-16) data. As with ``s``, there is no need to provide
single-segment buffer objects are accepted; :exc:`TypeError` is raised for all
others.
+``w*`` (read-write byte-oriented buffer) [Py_buffer \*]
+ This is to ``w`` what ``s*`` is to ``s``.
+ .. versionadded:: 2.6
+
``(items)`` (tuple) [*matching-items*]
The object must be a Python sequence whose length is the number of format units
in *items*. The C arguments must correspond to the individual format units in
can use this operation to lock memory in place
while an external caller could be modifying the contents,
so there's a corresponding
-``PyObject_ReleaseBuffer(PyObject *obj, Py_buffer *view)`` to
+``PyBuffer_Release(Py_buffer *view)`` to
indicate that the external caller is done.
The **flags** argument to :cfunc:`PyObject_GetBuffer` specifies
* The new buffer interface, previously described in
`the PEP 3118 section <#pep-3118-revised-buffer-protocol>`__,
- adds :cfunc:`PyObject_GetBuffer` and :cfunc:`PyObject_ReleaseBuffer`,
+ adds :cfunc:`PyObject_GetBuffer` and :cfunc:`PyBuffer_Release`,
as well as a few other functions.
* Python's use of the C stdio library is now thread-safe, or at least
*/
- PyAPI_FUNC(void) PyObject_ReleaseBuffer(PyObject *obj, Py_buffer *view);
-
-
- /* C-API version of the releasebuffer function call. It
- checks to make sure the object has the required function
- pointer and issues the call. The obj must have the buffer
- interface or this function will cause a segfault (i.e. it
- is assumed to be called only after a corresponding
- getbuffer which already verified the existence of the
- tp_as_buffer pointer).
-
- Returns 0 on success and -1 (with an error raised) on
- failure. This function always succeeds (as a NO-OP) if
- there is no releasebuffer function for the object so that
- it can always be called when the consumer is done with the
- buffer
- */
-
PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices);
/* Get the memory area pointed to by the indices for the buffer given.
per element.
*/
- PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, void *buf,
+ PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
Py_ssize_t len, int readonly,
int flags);
and -1 (with raising an error) on error.
*/
+ PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
+
+ /* Releases a Py_buffer obtained from getbuffer ParseTuple's s*.
+ */
+
PyAPI_FUNC(PyObject *) PyObject_Format(PyObject* obj,
PyObject *format_spec);
/*
/* Py3k buffer interface */
typedef struct bufferinfo {
- void *buf;
+ void *buf;
+ PyObject *obj; /* borrowed reference */
Py_ssize_t len;
Py_ssize_t itemsize; /* This is Py_ssize_t so it can be
pointed to by strides in simple case.*/
Core and Builtins
-----------------
+- Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
+ by denying s# to parse objects that have a releasebuffer procedure,
+ and introducing s*.
+
- Issue #3537: Fix an assertion failure when an empty but presized dict
object was stored in the freelist.
utf_7_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int final = 0;
Py_ssize_t consumed;
PyObject *decoded = NULL;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_7_decode",
- &data, &size, &errors, &final))
- return NULL;
- consumed = size;
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_7_decode",
+ &pbuf, &errors, &final))
+ return NULL;
+ consumed = pbuf.len;
- decoded = PyUnicode_DecodeUTF7Stateful(data, size, errors,
- final ? NULL : &consumed);
+ decoded = PyUnicode_DecodeUTF7Stateful(pbuf.buf, pbuf.len, errors,
+ final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
utf_8_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int final = 0;
Py_ssize_t consumed;
PyObject *decoded = NULL;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_8_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_8_decode",
+ &pbuf, &errors, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size;
-
- decoded = PyUnicode_DecodeUTF8Stateful(data, size, errors,
+ consumed = pbuf.len;
+
+ decoded = PyUnicode_DecodeUTF8Stateful(pbuf.buf, pbuf.len, errors,
final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
utf_16_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = 0;
int final = 0;
Py_ssize_t consumed;
PyObject *decoded;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_16_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_16_decode",
+ &pbuf, &errors, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- decoded = PyUnicode_DecodeUTF16Stateful(data, size, errors, &byteorder,
- final ? NULL : &consumed);
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ decoded = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
+ &byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
utf_16_le_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = -1;
int final = 0;
Py_ssize_t consumed;
PyObject *decoded = NULL;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_16_le_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_16_le_decode",
+ &pbuf, &errors, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- decoded = PyUnicode_DecodeUTF16Stateful(data, size, errors,
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ decoded = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
&byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
-
}
static PyObject *
utf_16_be_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = 1;
int final = 0;
Py_ssize_t consumed;
PyObject *decoded = NULL;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_16_be_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_16_be_decode",
+ &pbuf, &errors, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- decoded = PyUnicode_DecodeUTF16Stateful(data, size, errors,
+
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ decoded = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
&byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
utf_16_ex_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = 0;
PyObject *unicode, *tuple;
int final = 0;
Py_ssize_t consumed;
- if (!PyArg_ParseTuple(args, "t#|zii:utf_16_ex_decode",
- &data, &size, &errors, &byteorder, &final))
+ if (!PyArg_ParseTuple(args, "s*|zii:utf_16_ex_decode",
+ &pbuf, &errors, &byteorder, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- unicode = PyUnicode_DecodeUTF16Stateful(data, size, errors, &byteorder,
- final ? NULL : &consumed);
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ unicode = PyUnicode_DecodeUTF16Stateful(pbuf.buf, pbuf.len, errors,
+ &byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (unicode == NULL)
return NULL;
tuple = Py_BuildValue("Oni", unicode, consumed, byteorder);
utf_32_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = 0;
int final = 0;
Py_ssize_t consumed;
PyObject *decoded;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_32_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_32_decode",
+ &pbuf, &errors, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- decoded = PyUnicode_DecodeUTF32Stateful(data, size, errors, &byteorder,
- final ? NULL : &consumed);
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ decoded = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
+ &byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
utf_32_le_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = -1;
int final = 0;
Py_ssize_t consumed;
- PyObject *decoded = NULL;
+ PyObject *decoded;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_32_le_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_32_le_decode",
+ &pbuf, &errors, &final))
return NULL;
-
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- decoded = PyUnicode_DecodeUTF32Stateful(data, size, errors,
- &byteorder, final ? NULL : &consumed);
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ decoded = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
+ &byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
-
}
static PyObject *
utf_32_be_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = 1;
int final = 0;
Py_ssize_t consumed;
- PyObject *decoded = NULL;
+ PyObject *decoded;
- if (!PyArg_ParseTuple(args, "t#|zi:utf_32_be_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:utf_32_be_decode",
+ &pbuf, &errors, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- decoded = PyUnicode_DecodeUTF32Stateful(data, size, errors,
- &byteorder, final ? NULL : &consumed);
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ decoded = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
+ &byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (decoded == NULL)
return NULL;
return codec_tuple(decoded, consumed);
utf_32_ex_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
int byteorder = 0;
PyObject *unicode, *tuple;
int final = 0;
Py_ssize_t consumed;
- if (!PyArg_ParseTuple(args, "t#|zii:utf_32_ex_decode",
- &data, &size, &errors, &byteorder, &final))
+ if (!PyArg_ParseTuple(args, "s*|zii:utf_32_ex_decode",
+ &pbuf, &errors, &byteorder, &final))
return NULL;
- if (size < 0) {
- PyErr_SetString(PyExc_ValueError, "negative argument");
- return 0;
- }
- consumed = size; /* This is overwritten unless final is true. */
- unicode = PyUnicode_DecodeUTF32Stateful(data, size, errors, &byteorder,
- final ? NULL : &consumed);
+ consumed = pbuf.len; /* This is overwritten unless final is true. */
+ unicode = PyUnicode_DecodeUTF32Stateful(pbuf.buf, pbuf.len, errors,
+ &byteorder, final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
if (unicode == NULL)
return NULL;
tuple = Py_BuildValue("Oni", unicode, consumed, byteorder);
unicode_escape_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
+ PyObject *unicode;
- if (!PyArg_ParseTuple(args, "t#|z:unicode_escape_decode",
- &data, &size, &errors))
+ if (!PyArg_ParseTuple(args, "s*|z:unicode_escape_decode",
+ &pbuf, &errors))
return NULL;
- return codec_tuple(PyUnicode_DecodeUnicodeEscape(data, size, errors),
- size);
+ unicode = PyUnicode_DecodeUnicodeEscape(pbuf.buf, pbuf.len, errors);
+ PyBuffer_Release(&pbuf);
+ return codec_tuple(unicode, pbuf.len);
}
static PyObject *
raw_unicode_escape_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
const char *errors = NULL;
+ PyObject *unicode;
- if (!PyArg_ParseTuple(args, "t#|z:raw_unicode_escape_decode",
- &data, &size, &errors))
+ if (!PyArg_ParseTuple(args, "s*|z:raw_unicode_escape_decode",
+ &pbuf, &errors))
return NULL;
- return codec_tuple(PyUnicode_DecodeRawUnicodeEscape(data, size, errors),
- size);
+ unicode = PyUnicode_DecodeRawUnicodeEscape(pbuf.buf, pbuf.len, errors);
+ PyBuffer_Release(&pbuf);
+ return codec_tuple(unicode, pbuf.len);
}
static PyObject *
latin_1_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
+ PyObject *unicode;
const char *errors = NULL;
- if (!PyArg_ParseTuple(args, "t#|z:latin_1_decode",
- &data, &size, &errors))
+ if (!PyArg_ParseTuple(args, "s*|z:latin_1_decode",
+ &pbuf, &errors))
return NULL;
- return codec_tuple(PyUnicode_DecodeLatin1(data, size, errors),
- size);
+ unicode = PyUnicode_DecodeLatin1(pbuf.buf, pbuf.len, errors);
+ PyBuffer_Release(&pbuf);
+ return codec_tuple(unicode, pbuf.len);
}
static PyObject *
ascii_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
+ PyObject *unicode;
const char *errors = NULL;
- if (!PyArg_ParseTuple(args, "t#|z:ascii_decode",
- &data, &size, &errors))
+ if (!PyArg_ParseTuple(args, "s*|z:ascii_decode",
+ &pbuf, &errors))
return NULL;
- return codec_tuple(PyUnicode_DecodeASCII(data, size, errors),
- size);
+ unicode = PyUnicode_DecodeASCII(pbuf.buf, pbuf.len, errors);
+ PyBuffer_Release(&pbuf);
+ return codec_tuple(unicode, pbuf.len);
}
static PyObject *
charmap_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size;
+ Py_buffer pbuf;
+ PyObject *unicode;
const char *errors = NULL;
PyObject *mapping = NULL;
- if (!PyArg_ParseTuple(args, "t#|zO:charmap_decode",
- &data, &size, &errors, &mapping))
+ if (!PyArg_ParseTuple(args, "s*|zO:charmap_decode",
+ &pbuf, &errors, &mapping))
return NULL;
if (mapping == Py_None)
mapping = NULL;
- return codec_tuple(PyUnicode_DecodeCharmap(data, size, mapping, errors),
- size);
+ unicode = PyUnicode_DecodeCharmap(pbuf.buf, pbuf.len, mapping, errors);
+ PyBuffer_Release(&pbuf);
+ return codec_tuple(unicode, pbuf.len);
}
#if defined(MS_WINDOWS) && defined(HAVE_USABLE_WCHAR_T)
mbcs_decode(PyObject *self,
PyObject *args)
{
- const char *data;
- Py_ssize_t size, consumed;
+ Py_buffer pbuf;
const char *errors = NULL;
int final = 0;
- PyObject *decoded;
+ Py_ssize_t consumed;
+ PyObject *decoded = NULL;
- if (!PyArg_ParseTuple(args, "t#|zi:mbcs_decode",
- &data, &size, &errors, &final))
+ if (!PyArg_ParseTuple(args, "s*|zi:mbcs_decode",
+ &pbuf, &errors, &final))
return NULL;
+ consumed = pbuf.len;
- decoded = PyUnicode_DecodeMBCSStateful(
- data, size, errors, final ? NULL : &consumed);
- if (!decoded)
+ decoded = PyUnicode_DecodeMBCSStateful(pbuf.buf, pbuf.len, errors,
+ final ? NULL : &consumed);
+ PyBuffer_Release(&pbuf);
+ if (decoded == NULL)
return NULL;
- return codec_tuple(decoded, final ? size : consumed);
+ return codec_tuple(decoded, consumed);
}
#endif /* MS_WINDOWS */
static PyObject *
fileio_readinto(PyFileIOObject *self, PyObject *args)
{
- char *ptr;
+ Py_buffer pbuf;
Py_ssize_t n;
if (self->fd < 0)
if (!self->readable)
return err_mode("reading");
- if (!PyArg_ParseTuple(args, "w#", &ptr, &n))
+ if (!PyArg_ParseTuple(args, "w*", &pbuf))
return NULL;
Py_BEGIN_ALLOW_THREADS
errno = 0;
- n = read(self->fd, ptr, n);
+ n = read(self->fd, pbuf.buf, pbuf.len);
Py_END_ALLOW_THREADS
+ PyBuffer_Release(&pbuf);
if (n < 0) {
if (errno == EAGAIN)
Py_RETURN_NONE;
static PyObject *
fileio_write(PyFileIOObject *self, PyObject *args)
{
+ Py_buffer pbuf;
Py_ssize_t n;
- char *ptr;
if (self->fd < 0)
return err_closed();
if (!self->writable)
return err_mode("writing");
- if (!PyArg_ParseTuple(args, "s#", &ptr, &n))
+ if (!PyArg_ParseTuple(args, "s*", &pbuf))
return NULL;
Py_BEGIN_ALLOW_THREADS
errno = 0;
- n = write(self->fd, ptr, n);
+ n = write(self->fd, pbuf.buf, pbuf.len);
Py_END_ALLOW_THREADS
+ PyBuffer_Release(&pbuf);
+
if (n < 0) {
if (errno == EAGAIN)
Py_RETURN_NONE;
char *freeme = NULL, *buffer = NULL;
Py_ssize_t res, length, offset = 0;
PyObject *result = NULL;
+ Py_buffer pbuf;
- if (!PyArg_ParseTuple(args, "w#|" F_PY_SSIZE_T,
- &buffer, &length, &offset))
+ CHECK_READABLE(self);
+
+ if (!PyArg_ParseTuple(args, "w*|" F_PY_SSIZE_T,
+ &pbuf, &offset))
return NULL;
- CHECK_READABLE(self);
+ buffer = pbuf.buf;
+ length = pbuf.len;
if (offset < 0) {
PyErr_SetString(PyExc_ValueError, "negative offset");
- return NULL;
+ goto _error;
}
if (offset > length) {
PyErr_SetString(PyExc_ValueError, "offset too large");
- return NULL;
+ goto _error;
}
res = conn_recv_string(self, buffer+offset, length-offset,
PyErr_SetObject(BufferTooShort, result);
Py_DECREF(result);
}
- return NULL;
+ goto _error;
}
}
+_cleanup:
+ PyBuffer_Release(&pbuf);
return result;
+
+_error:
+ result = NULL;
+ goto _cleanup;
}
/*
BZ2File_write(BZ2FileObject *self, PyObject *args)
{
PyObject *ret = NULL;
+ Py_buffer pbuf;
char *buf;
int len;
int bzerror;
- if (!PyArg_ParseTuple(args, "s#:write", &buf, &len))
+ if (!PyArg_ParseTuple(args, "s*:write", &pbuf))
return NULL;
+ buf = pbuf.buf;
+ len = pbuf.len;
ACQUIRE_LOCK(self);
switch (self->mode) {
ret = Py_None;
cleanup:
+ PyBuffer_Release(&pbuf);
RELEASE_LOCK(self);
return ret;
}
static PyObject *
BZ2Comp_compress(BZ2CompObject *self, PyObject *args)
{
+ Py_buffer pdata;
char *data;
int datasize;
int bufsize = SMALLCHUNK;
bz_stream *bzs = &self->bzs;
int bzerror;
- if (!PyArg_ParseTuple(args, "s#:compress", &data, &datasize))
+ if (!PyArg_ParseTuple(args, "s*:compress", &pdata))
return NULL;
+ data = pdata.buf;
+ datasize = pdata.len;
- if (datasize == 0)
+ if (datasize == 0) {
+ PyBuffer_Release(&pdata);
return PyString_FromString("");
+ }
ACQUIRE_LOCK(self);
if (!self->running) {
_PyString_Resize(&ret, (Py_ssize_t)(BZS_TOTAL_OUT(bzs) - totalout));
RELEASE_LOCK(self);
+ PyBuffer_Release(&pdata);
return ret;
error:
RELEASE_LOCK(self);
+ PyBuffer_Release(&pdata);
Py_XDECREF(ret);
return NULL;
}
static PyObject *
BZ2Decomp_decompress(BZ2DecompObject *self, PyObject *args)
{
+ Py_buffer pdata;
char *data;
int datasize;
int bufsize = SMALLCHUNK;
bz_stream *bzs = &self->bzs;
int bzerror;
- if (!PyArg_ParseTuple(args, "s#:decompress", &data, &datasize))
+ if (!PyArg_ParseTuple(args, "s*:decompress", &pdata))
return NULL;
+ data = pdata.buf;
+ datasize = pdata.len;
ACQUIRE_LOCK(self);
if (!self->running) {
_PyString_Resize(&ret, (Py_ssize_t)(BZS_TOTAL_OUT(bzs) - totalout));
RELEASE_LOCK(self);
+ PyBuffer_Release(&pdata);
return ret;
error:
RELEASE_LOCK(self);
+ PyBuffer_Release(&pdata);
Py_XDECREF(ret);
return NULL;
}
bz2_compress(PyObject *self, PyObject *args, PyObject *kwargs)
{
int compresslevel=9;
+ Py_buffer pdata;
char *data;
int datasize;
int bufsize;
int bzerror;
static char *kwlist[] = {"data", "compresslevel", 0};
- if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#|i",
- kwlist, &data, &datasize,
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*|i",
+ kwlist, &pdata,
&compresslevel))
return NULL;
+ data = pdata.buf;
+ datasize = pdata.len;
if (compresslevel < 1 || compresslevel > 9) {
PyErr_SetString(PyExc_ValueError,
"compresslevel must be between 1 and 9");
+ PyBuffer_Release(&pdata);
return NULL;
}
bufsize = datasize + (datasize/100+1) + 600;
ret = PyString_FromStringAndSize(NULL, bufsize);
- if (!ret)
+ if (!ret) {
+ PyBuffer_Release(&pdata);
return NULL;
+ }
memset(bzs, 0, sizeof(bz_stream));
bzerror = BZ2_bzCompressInit(bzs, compresslevel, 0, 0);
if (bzerror != BZ_OK) {
Util_CatchBZ2Error(bzerror);
+ PyBuffer_Release(&pdata);
Py_DECREF(ret);
return NULL;
}
} else if (bzerror != BZ_FINISH_OK) {
BZ2_bzCompressEnd(bzs);
Util_CatchBZ2Error(bzerror);
+ PyBuffer_Release(&pdata);
Py_DECREF(ret);
return NULL;
}
bufsize = Util_NewBufferSize(bufsize);
if (_PyString_Resize(&ret, bufsize) < 0) {
BZ2_bzCompressEnd(bzs);
+ PyBuffer_Release(&pdata);
Py_DECREF(ret);
return NULL;
}
_PyString_Resize(&ret, (Py_ssize_t)BZS_TOTAL_OUT(bzs));
BZ2_bzCompressEnd(bzs);
+ PyBuffer_Release(&pdata);
return ret;
}
static PyObject *
bz2_decompress(PyObject *self, PyObject *args)
{
+ Py_buffer pdata;
char *data;
int datasize;
int bufsize = SMALLCHUNK;
bz_stream *bzs = &_bzs;
int bzerror;
- if (!PyArg_ParseTuple(args, "s#:decompress", &data, &datasize))
+ if (!PyArg_ParseTuple(args, "s*:decompress", &pdata))
return NULL;
+ data = pdata.buf;
+ datasize = pdata.len;
- if (datasize == 0)
+ if (datasize == 0) {
+ PyBuffer_Release(&pdata);
return PyString_FromString("");
+ }
ret = PyString_FromStringAndSize(NULL, bufsize);
- if (!ret)
+ if (!ret) {
+ PyBuffer_Release(&pdata);
return NULL;
+ }
memset(bzs, 0, sizeof(bz_stream));
if (bzerror != BZ_OK) {
Util_CatchBZ2Error(bzerror);
Py_DECREF(ret);
+ PyBuffer_Release(&pdata);
return NULL;
}
} else if (bzerror != BZ_OK) {
BZ2_bzDecompressEnd(bzs);
Util_CatchBZ2Error(bzerror);
+ PyBuffer_Release(&pdata);
Py_DECREF(ret);
return NULL;
}
BZ2_bzDecompressEnd(bzs);
PyErr_SetString(PyExc_ValueError,
"couldn't find end of stream");
+ PyBuffer_Release(&pdata);
Py_DECREF(ret);
return NULL;
}
bufsize = Util_NewBufferSize(bufsize);
if (_PyString_Resize(&ret, bufsize) < 0) {
BZ2_bzDecompressEnd(bzs);
+ PyBuffer_Release(&pdata);
Py_DECREF(ret);
return NULL;
}
if (bzs->avail_out != 0)
_PyString_Resize(&ret, (Py_ssize_t)BZS_TOTAL_OUT(bzs));
BZ2_bzDecompressEnd(bzs);
+ PyBuffer_Release(&pdata);
return ret;
}
static PyObject *
posix_write(PyObject *self, PyObject *args)
{
+ Py_buffer pbuf;
int fd;
Py_ssize_t size;
- char *buffer;
- if (!PyArg_ParseTuple(args, "is#:write", &fd, &buffer, &size))
+ if (!PyArg_ParseTuple(args, "is*:write", &fd, &pbuf))
return NULL;
Py_BEGIN_ALLOW_THREADS
- size = write(fd, buffer, (size_t)size);
+ size = write(fd, pbuf.buf, (size_t)pbuf.len);
Py_END_ALLOW_THREADS
+ PyBuffer_Release(&pbuf);
if (size < 0)
return posix_error();
return PyInt_FromSsize_t(size);
{
char *buf;
int len, n = -1, flags = 0, timeout;
+ Py_buffer pbuf;
- if (!PyArg_ParseTuple(args, "s#|i:send", &buf, &len, &flags))
+ if (!PyArg_ParseTuple(args, "s*|i:send", &pbuf, &flags))
return NULL;
- if (!IS_SELECTABLE(s))
+ if (!IS_SELECTABLE(s)) {
+ PyBuffer_Release(&pbuf);
return select_error();
+ }
+ buf = pbuf.buf;
+ len = pbuf.len;
Py_BEGIN_ALLOW_THREADS
timeout = internal_select(s, 1);
#endif
Py_END_ALLOW_THREADS
+ PyBuffer_Release(&pbuf);
+
if (timeout == 1) {
PyErr_SetString(socket_timeout, "timed out");
return NULL;
{
char *buf;
int len, n = -1, flags = 0, timeout;
+ Py_buffer pbuf;
- if (!PyArg_ParseTuple(args, "s#|i:sendall", &buf, &len, &flags))
+ if (!PyArg_ParseTuple(args, "s*|i:sendall", &pbuf, &flags))
return NULL;
+ buf = pbuf.buf;
+ len = pbuf.len;
- if (!IS_SELECTABLE(s))
+ if (!IS_SELECTABLE(s)) {
+ PyBuffer_Release(&pbuf);
return select_error();
+ }
Py_BEGIN_ALLOW_THREADS
do {
len -= n;
} while (len > 0);
Py_END_ALLOW_THREADS
+ PyBuffer_Release(&pbuf);
if (timeout == 1) {
PyErr_SetString(socket_timeout, "timed out");
static PyObject *
sock_sendto(PySocketSockObject *s, PyObject *args)
{
+ Py_buffer pbuf;
PyObject *addro;
char *buf;
+ Py_ssize_t len;
sock_addr_t addrbuf;
- int addrlen, len, n = -1, flags, timeout;
+ int addrlen, n = -1, flags, timeout;
flags = 0;
- if (!PyArg_ParseTuple(args, "s#O:sendto", &buf, &len, &addro)) {
+ if (!PyArg_ParseTuple(args, "s*O:sendto", &pbuf, &addro)) {
PyErr_Clear();
- if (!PyArg_ParseTuple(args, "s#iO:sendto",
- &buf, &len, &flags, &addro))
+ if (!PyArg_ParseTuple(args, "s*iO:sendto",
+ &pbuf, &flags, &addro))
return NULL;
}
+ buf = pbuf.buf;
+ len = pbuf.len;
- if (!IS_SELECTABLE(s))
+ if (!IS_SELECTABLE(s)) {
+ PyBuffer_Release(&pbuf);
return select_error();
+ }
- if (!getsockaddrarg(s, addro, SAS2SA(&addrbuf), &addrlen))
+ if (!getsockaddrarg(s, addro, SAS2SA(&addrbuf), &addrlen)) {
+ PyBuffer_Release(&pbuf);
return NULL;
+ }
Py_BEGIN_ALLOW_THREADS
timeout = internal_select(s, 1);
n = sendto(s->sock_fd, buf, len, flags, SAS2SA(&addrbuf), addrlen);
Py_END_ALLOW_THREADS
+ PyBuffer_Release(&pbuf);
if (timeout == 1) {
PyErr_SetString(socket_timeout, "timed out");
return NULL;
return (*(obj->ob_type->tp_as_buffer->bf_getbuffer))(obj, view, flags);
}
-void
-PyObject_ReleaseBuffer(PyObject *obj, Py_buffer *view)
-{
- if (obj->ob_type->tp_as_buffer != NULL &&
- obj->ob_type->tp_as_buffer->bf_releasebuffer != NULL) {
- (*(obj->ob_type->tp_as_buffer->bf_releasebuffer))(obj, view);
- }
-}
-
-
static int
_IsFortranContiguous(Py_buffer *view)
{
if (PyObject_GetBuffer(dest, &view_dest, PyBUF_FULL) != 0) return -1;
if (PyObject_GetBuffer(src, &view_src, PyBUF_FULL_RO) != 0) {
- PyObject_ReleaseBuffer(dest, &view_dest);
+ PyBuffer_Release(&view_dest);
return -1;
}
if (view_dest.len < view_src.len) {
PyErr_SetString(PyExc_BufferError,
"destination is too small to receive data from source");
- PyObject_ReleaseBuffer(dest, &view_dest);
- PyObject_ReleaseBuffer(src, &view_src);
+ PyBuffer_Release(&view_dest);
+ PyBuffer_Release(&view_src);
return -1;
}
PyBuffer_IsContiguous(&view_src, 'F'))) {
/* simplest copy is all that is needed */
memcpy(view_dest.buf, view_src.buf, view_src.len);
- PyObject_ReleaseBuffer(dest, &view_dest);
- PyObject_ReleaseBuffer(src, &view_src);
+ PyBuffer_Release(&view_dest);
+ PyBuffer_Release(&view_src);
return 0;
}
indices = (Py_ssize_t *)PyMem_Malloc(sizeof(Py_ssize_t)*view_src.ndim);
if (indices == NULL) {
PyErr_NoMemory();
- PyObject_ReleaseBuffer(dest, &view_dest);
- PyObject_ReleaseBuffer(src, &view_src);
+ PyBuffer_Release(&view_dest);
+ PyBuffer_Release(&view_src);
return -1;
}
for (k=0; k<view_src.ndim;k++) {
memcpy(dptr, sptr, view_src.itemsize);
}
PyMem_Free(indices);
- PyObject_ReleaseBuffer(dest, &view_dest);
- PyObject_ReleaseBuffer(src, &view_src);
+ PyBuffer_Release(&view_dest);
+ PyBuffer_Release(&view_src);
return 0;
}
}
int
-PyBuffer_FillInfo(Py_buffer *view, void *buf, Py_ssize_t len,
+PyBuffer_FillInfo(Py_buffer *view, PyObject *obj, void *buf, Py_ssize_t len,
int readonly, int flags)
{
if (view == NULL) return 0;
return -1;
}
+ view->obj = obj;
view->buf = buf;
view->len = len;
view->readonly = readonly;
return 0;
}
+void
+PyBuffer_Release(Py_buffer *view)
+{
+ PyObject *obj = view->obj;
+ if (!obj || !Py_TYPE(obj)->tp_as_buffer || !Py_TYPE(obj)->tp_as_buffer->bf_releasebuffer)
+ /* Unmanaged buffer */
+ return;
+ Py_TYPE(obj)->tp_as_buffer->bf_releasebuffer(obj, view);
+
+}
+
PyObject *
PyObject_Format(PyObject* obj, PyObject *format_spec)
{
ptr = "";
else
ptr = obj->ob_bytes;
- ret = PyBuffer_FillInfo(view, ptr, Py_SIZE(obj), 0, flags);
+ ret = PyBuffer_FillInfo(view, (PyObject*)obj, ptr, Py_SIZE(obj), 0, flags);
if (ret >= 0) {
obj->ob_exports++;
}
done:
if (va.len != -1)
- PyObject_ReleaseBuffer(a, &va);
+ PyBuffer_Release(&va);
if (vb.len != -1)
- PyObject_ReleaseBuffer(b, &vb);
+ PyBuffer_Release(&vb);
return (PyObject *)result;
}
mysize = Py_SIZE(self);
size = mysize + vo.len;
if (size < 0) {
- PyObject_ReleaseBuffer(other, &vo);
+ PyBuffer_Release(&vo);
return PyErr_NoMemory();
}
if (size < self->ob_alloc) {
self->ob_bytes[Py_SIZE(self)] = '\0'; /* Trailing null byte */
}
else if (PyByteArray_Resize((PyObject *)self, size) < 0) {
- PyObject_ReleaseBuffer(other, &vo);
+ PyBuffer_Release(&vo);
return NULL;
}
memcpy(self->ob_bytes + mysize, vo.buf, vo.len);
- PyObject_ReleaseBuffer(other, &vo);
+ PyBuffer_Release(&vo);
Py_INCREF(self);
return (PyObject *)self;
}
finish:
if (vbytes.len != -1)
- PyObject_ReleaseBuffer(values, &vbytes);
+ PyBuffer_Release(&vbytes);
return res;
}
if (PyByteArray_Resize((PyObject *)self, size) < 0) goto fail;
if (PyBuffer_ToContiguous(self->ob_bytes, &view, size, 'C') < 0)
goto fail;
- PyObject_ReleaseBuffer(arg, &view);
+ PyBuffer_Release(&view);
return 0;
fail:
- PyObject_ReleaseBuffer(arg, &view);
+ PyBuffer_Release(&view);
return -1;
}
other_size = _getbuffer(other, &other_bytes);
if (other_size < 0) {
PyErr_Clear();
- PyObject_ReleaseBuffer(self, &self_bytes);
+ PyBuffer_Release(&self_bytes);
Py_INCREF(Py_NotImplemented);
return Py_NotImplemented;
}
}
res = cmp ? Py_True : Py_False;
- PyObject_ReleaseBuffer(self, &self_bytes);
- PyObject_ReleaseBuffer(other, &other_bytes);
+ PyBuffer_Release(&self_bytes);
+ PyBuffer_Release(&other_bytes);
Py_INCREF(res);
return res;
}
static void
bytes_dealloc(PyByteArrayObject *self)
{
+ if (self->ob_exports > 0) {
+ PyErr_SetString(PyExc_SystemError,
+ "deallocated bytearray object has exported buffers");
+ PyErr_Print();
+ }
if (self->ob_bytes != 0) {
PyMem_Free(self->ob_bytes);
}
res = stringlib_rfind_slice(
PyByteArray_AS_STRING(self), PyByteArray_GET_SIZE(self),
subbuf.buf, subbuf.len, start, end);
- PyObject_ReleaseBuffer(subobj, &subbuf);
+ PyBuffer_Release(&subbuf);
return res;
}
count_obj = PyInt_FromSsize_t(
stringlib_count(str + start, end - start, vsub.buf, vsub.len)
);
- PyObject_ReleaseBuffer(sub_obj, &vsub);
+ PyBuffer_Release(&vsub);
return count_obj;
}
return -1;
pos = stringlib_find(PyByteArray_AS_STRING(self), Py_SIZE(self),
varg.buf, varg.len, 0);
- PyObject_ReleaseBuffer(arg, &varg);
+ PyBuffer_Release(&varg);
return pos >= 0;
}
if (ival < 0 || ival >= 256) {
rv = ! memcmp(str+start, vsubstr.buf, vsubstr.len);
done:
- PyObject_ReleaseBuffer(substr, &vsubstr);
+ PyBuffer_Release(&vsubstr);
return rv;
}
PyByteArray_Resize(result, output - output_start);
done:
- PyObject_ReleaseBuffer(tableobj, &vtable);
+ PyBuffer_Release(&vtable);
if (delobj != NULL)
- PyObject_ReleaseBuffer(delobj, &vdel);
+ PyBuffer_Release(&vdel);
return result;
}
if (_getbuffer(from, &vfrom) < 0)
return NULL;
if (_getbuffer(to, &vto) < 0) {
- PyObject_ReleaseBuffer(from, &vfrom);
+ PyBuffer_Release(&vfrom);
return NULL;
}
vfrom.buf, vfrom.len,
vto.buf, vto.len, count);
- PyObject_ReleaseBuffer(from, &vfrom);
- PyObject_ReleaseBuffer(to, &vto);
+ PyBuffer_Release(&vfrom);
+ PyBuffer_Release(&vto);
return res;
}
if (n == 0) {
PyErr_SetString(PyExc_ValueError, "empty separator");
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return NULL;
}
if (n == 1)
list = PyList_New(PREALLOC_SIZE(maxsplit));
if (list == NULL) {
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return NULL;
}
#endif
SPLIT_ADD(s, i, len);
FIX_PREALLOC_SIZE(list);
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return list;
onError:
Py_DECREF(list);
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return NULL;
}
if (n == 0) {
PyErr_SetString(PyExc_ValueError, "empty separator");
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return NULL;
}
else if (n == 1)
list = PyList_New(PREALLOC_SIZE(maxsplit));
if (list == NULL) {
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return NULL;
}
FIX_PREALLOC_SIZE(list);
if (PyList_Reverse(list) < 0)
goto onError;
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return list;
onError:
Py_DECREF(list);
- PyObject_ReleaseBuffer(subobj, &vsub);
+ PyBuffer_Release(&vsub);
return NULL;
}
else
right = rstrip_helper(myptr, mysize, argptr, argsize);
if (arg != Py_None)
- PyObject_ReleaseBuffer(arg, &varg);
+ PyBuffer_Release(&varg);
return PyByteArray_FromStringAndSize(self->ob_bytes + left, right - left);
}
left = lstrip_helper(myptr, mysize, argptr, argsize);
right = mysize;
if (arg != Py_None)
- PyObject_ReleaseBuffer(arg, &varg);
+ PyBuffer_Release(&varg);
return PyByteArray_FromStringAndSize(self->ob_bytes + left, right - left);
}
left = 0;
right = rstrip_helper(myptr, mysize, argptr, argsize);
if (arg != Py_None)
- PyObject_ReleaseBuffer(arg, &varg);
+ PyBuffer_Release(&varg);
return PyByteArray_FromStringAndSize(self->ob_bytes + left, right - left);
}
char *ptr;
Py_ssize_t ntodo;
Py_ssize_t ndone, nnow;
+ Py_buffer pbuf;
if (f->f_fp == NULL)
return err_closed();
(f->f_bufend - f->f_bufptr) > 0 &&
f->f_buf[0] != '\0')
return err_iterbuffered();
- if (!PyArg_ParseTuple(args, "w#", &ptr, &ntodo))
+ if (!PyArg_ParseTuple(args, "w*", &pbuf))
return NULL;
+ ptr = pbuf.buf;
+ ntodo = pbuf.len;
ndone = 0;
while (ntodo > 0) {
FILE_BEGIN_ALLOW_THREADS(f)
break;
PyErr_SetFromErrno(PyExc_IOError);
clearerr(f->f_fp);
+ PyBuffer_Release(&pbuf);
return NULL;
}
ndone += nnow;
ntodo -= nnow;
}
+ PyBuffer_Release(&pbuf);
return PyInt_FromSsize_t(ndone);
}
static PyObject *
file_write(PyFileObject *f, PyObject *args)
{
+ Py_buffer pbuf;
char *s;
Py_ssize_t n, n2;
if (f->f_fp == NULL)
return err_closed();
- if (!PyArg_ParseTuple(args, f->f_binary ? "s#" : "t#", &s, &n))
+ if (f->f_binary) {
+ if (!PyArg_ParseTuple(args, "s*", &pbuf))
+ return NULL;
+ s = pbuf.buf;
+ n = pbuf.len;
+ } else
+ if (!PyArg_ParseTuple(args, "t#", &s, &n))
return NULL;
f->f_softspace = 0;
FILE_BEGIN_ALLOW_THREADS(f)
errno = 0;
n2 = fwrite(s, 1, n, f->f_fp);
FILE_END_ALLOW_THREADS(f)
+ if (f->f_binary)
+ PyBuffer_Release(&pbuf);
if (n2 != n) {
PyErr_SetFromErrno(PyExc_IOError);
clearerr(f->f_fp);
static int
string_buffer_getbuffer(PyStringObject *self, Py_buffer *view, int flags)
{
- return PyBuffer_FillInfo(view, (void *)self->ob_sval, Py_SIZE(self),
+ return PyBuffer_FillInfo(view, (PyObject*)self,
+ (void *)self->ob_sval, Py_SIZE(self),
1, flags);
}
};
-\f
+
#define LEFTSTRIP 0
#define RIGHTSTRIP 1
#define BOTHSTRIP 2
\n\
");
-\f
+
static PyMethodDef
string_methods[] = {
/* Counterparts of the obsolete stropmodule functions; except
static char *convertsimple(PyObject *, const char **, va_list *, int, char *,
size_t, PyObject **);
static Py_ssize_t convertbuffer(PyObject *, void **p, char **);
+static int getbuffer(PyObject *, Py_buffer *, char**);
static int vgetargskeywords(PyObject *, PyObject *,
const char *, char **, va_list *, int);
}
case 's': {/* string */
- if (*format == '#') {
+ if (*format == '*') {
+ Py_buffer *p = (Py_buffer *)va_arg(*p_va, Py_buffer *);
+
+ if (PyString_Check(arg)) {
+ PyBuffer_FillInfo(p, arg,
+ PyString_AS_STRING(arg), PyString_GET_SIZE(arg),
+ 1, 0);
+ }
+#ifdef Py_USING_UNICODE
+ else if (PyUnicode_Check(arg)) {
+ uarg = UNICODE_DEFAULT_ENCODING(arg);
+ if (uarg == NULL)
+ return converterr(CONV_UNICODE,
+ arg, msgbuf, bufsize);
+ PyBuffer_FillInfo(p, arg,
+ PyString_AS_STRING(uarg), PyString_GET_SIZE(uarg),
+ 1, 0);
+ }
+#endif
+ else { /* any buffer-like object */
+ char *buf;
+ if (getbuffer(arg, p, &buf) < 0)
+ return converterr(buf, arg, msgbuf, bufsize);
+ }
+ format++;
+ } else if (*format == '#') {
void **p = (void **)va_arg(*p_va, char **);
FETCH_SIZE;
}
case 'z': {/* string, may be NULL (None) */
- if (*format == '#') { /* any buffer-like object */
+ if (*format == '*') {
+ Py_buffer *p = (Py_buffer *)va_arg(*p_va, Py_buffer *);
+
+ if (arg == Py_None)
+ PyBuffer_FillInfo(p, NULL, NULL, 0, 1, 0);
+ else if (PyString_Check(arg)) {
+ PyBuffer_FillInfo(p, arg,
+ PyString_AS_STRING(arg), PyString_GET_SIZE(arg),
+ 1, 0);
+ }
+#ifdef Py_USING_UNICODE
+ else if (PyUnicode_Check(arg)) {
+ uarg = UNICODE_DEFAULT_ENCODING(arg);
+ if (uarg == NULL)
+ return converterr(CONV_UNICODE,
+ arg, msgbuf, bufsize);
+ PyBuffer_FillInfo(p, arg,
+ PyString_AS_STRING(uarg), PyString_GET_SIZE(uarg),
+ 1, 0);
+ }
+#endif
+ else { /* any buffer-like object */
+ char *buf;
+ if (getbuffer(arg, p, &buf) < 0)
+ return converterr(buf, arg, msgbuf, bufsize);
+ }
+ format++;
+ } else if (*format == '#') { /* any buffer-like object */
void **p = (void **)va_arg(*p_va, char **);
FETCH_SIZE;
case 'w': { /* memory buffer, read-write access */
void **p = va_arg(*p_va, void **);
+ void *res;
PyBufferProcs *pb = arg->ob_type->tp_as_buffer;
Py_ssize_t count;
-
- if (pb == NULL ||
+
+ if (pb && pb->bf_releasebuffer && *format != '*')
+ /* Buffer must be released, yet caller does not use
+ the Py_buffer protocol. */
+ return converterr("pinned buffer", arg, msgbuf, bufsize);
+
+ if (pb && pb->bf_getbuffer && *format == '*') {
+ /* Caller is interested in Py_buffer, and the object
+ supports it directly. */
+ format++;
+ if (pb->bf_getbuffer(arg, (Py_buffer*)p, PyBUF_WRITABLE) < 0) {
+ PyErr_Clear();
+ return converterr("read-write buffer", arg, msgbuf, bufsize);
+ }
+ if (!PyBuffer_IsContiguous((Py_buffer*)p, 'C'))
+ return converterr("contiguous buffer", arg, msgbuf, bufsize);
+ break;
+ }
+
+ if (pb == NULL ||
pb->bf_getwritebuffer == NULL ||
pb->bf_getsegcount == NULL)
return converterr("read-write buffer", arg, msgbuf, bufsize);
if ((*pb->bf_getsegcount)(arg, NULL) != 1)
return converterr("single-segment read-write buffer",
arg, msgbuf, bufsize);
- if ((count = pb->bf_getwritebuffer(arg, 0, p)) < 0)
+ if ((count = pb->bf_getwritebuffer(arg, 0, &res)) < 0)
return converterr("(unspecified)", arg, msgbuf, bufsize);
- if (*format == '#') {
- FETCH_SIZE;
- STORE_SIZE(count);
+ if (*format == '*') {
+ PyBuffer_FillInfo((Py_buffer*)p, arg, res, count, 1, 0);
format++;
}
+ else {
+ *p = res;
+ if (*format == '#') {
+ FETCH_SIZE;
+ STORE_SIZE(count);
+ format++;
+ }
+ }
break;
}
"string or single-segment read-only buffer",
arg, msgbuf, bufsize);
+ if (pb->bf_releasebuffer)
+ return converterr(
+ "string or pinned buffer",
+ arg, msgbuf, bufsize);
+
count = pb->bf_getcharbuffer(arg, 0, p);
if (count < 0)
return converterr("(unspecified)", arg, msgbuf, bufsize);
Py_ssize_t count;
if (pb == NULL ||
pb->bf_getreadbuffer == NULL ||
- pb->bf_getsegcount == NULL) {
+ pb->bf_getsegcount == NULL ||
+ pb->bf_releasebuffer != NULL) {
*errmsg = "string or read-only buffer";
return -1;
}
return count;
}
+static int
+getbuffer(PyObject *arg, Py_buffer *view, char**errmsg)
+{
+ void *buf;
+ Py_ssize_t count;
+ PyBufferProcs *pb = arg->ob_type->tp_as_buffer;
+ if (pb == NULL) {
+ *errmsg = "string or buffer";
+ return -1;
+ }
+ if (pb->bf_getbuffer) {
+ if (pb->bf_getbuffer(arg, view, 0) < 0)
+ return -1;
+ if (!PyBuffer_IsContiguous(view, 'C')) {
+ *errmsg = "contiguous buffer";
+ return -1;
+ }
+ return 0;
+ }
+
+ count = convertbuffer(arg, &buf, errmsg);
+ if (count < 0)
+ return count;
+ PyBuffer_FillInfo(view, NULL, buf, count, 1, 0);
+ return 0;
+}
+
/* Support for keyword arguments donated by
Geoff Philbrick <philbric@delphi.hks.com> */
else
(void) va_arg(*p_va, int *);
format++;
+ } else if ((c == 's' || c == 'z') && *format == '*') {
+ format++;
}
break;
}
projects / python / commitdiff