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Copy pathgetargs.c
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executable file
·1908 lines (1717 loc) · 56.5 KB
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/* New getargs implementation */
#include "Python.h"
#include <ctype.h>
#ifdef __cplusplus
extern "C" {
#endif
int PyArg_Parse(PyObject *, const char *, ...);
int PyArg_ParseTuple(PyObject *, const char *, ...);
int PyArg_VaParse(PyObject *, const char *, va_list);
int PyArg_ParseTupleAndKeywords(PyObject *, PyObject *,
const char *, char **, ...);
int PyArg_VaParseTupleAndKeywords(PyObject *, PyObject *,
const char *, char **, va_list);
#ifdef HAVE_DECLSPEC_DLL
/* Export functions */
PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *, char *, ...);
PyAPI_FUNC(int) _PyArg_ParseTuple_SizeT(PyObject *, char *, ...);
PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
const char *, char **, ...);
PyAPI_FUNC(PyObject *) _Py_BuildValue_SizeT(const char *, ...);
PyAPI_FUNC(int) _PyArg_VaParse_SizeT(PyObject *, char *, va_list);
PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *, PyObject *,
const char *, char **, va_list);
#endif
#define FLAG_COMPAT 1
#define FLAG_SIZE_T 2
/* Forward */
static int vgetargs1(PyObject *, const char *, va_list *, int);
static void seterror(int, const char *, int *, const char *, const char *);
static char *convertitem(PyObject *, const char **, va_list *, int, int *,
char *, size_t, PyObject **);
static char *converttuple(PyObject *, const char **, va_list *, int,
int *, char *, size_t, int, PyObject **);
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);
static char *skipitem(const char **, va_list *, int);
int
PyArg_Parse(PyObject *args, const char *format, ...)
{
int retval;
va_list va;
va_start(va, format);
retval = vgetargs1(args, format, &va, FLAG_COMPAT);
va_end(va);
return retval;
}
int
_PyArg_Parse_SizeT(PyObject *args, char *format, ...)
{
int retval;
va_list va;
va_start(va, format);
retval = vgetargs1(args, format, &va, FLAG_COMPAT|FLAG_SIZE_T);
va_end(va);
return retval;
}
int
PyArg_ParseTuple(PyObject *args, const char *format, ...)
{
int retval;
va_list va;
va_start(va, format);
retval = vgetargs1(args, format, &va, 0);
va_end(va);
return retval;
}
int
_PyArg_ParseTuple_SizeT(PyObject *args, char *format, ...)
{
int retval;
va_list va;
va_start(va, format);
retval = vgetargs1(args, format, &va, FLAG_SIZE_T);
va_end(va);
return retval;
}
int
PyArg_VaParse(PyObject *args, const char *format, va_list va)
{
va_list lva;
#ifdef VA_LIST_IS_ARRAY
memcpy(lva, va, sizeof(va_list));
#else
#ifdef __va_copy
__va_copy(lva, va);
#else
lva = va;
#endif
#endif
return vgetargs1(args, format, &lva, 0);
}
int
_PyArg_VaParse_SizeT(PyObject *args, char *format, va_list va)
{
va_list lva;
#ifdef VA_LIST_IS_ARRAY
memcpy(lva, va, sizeof(va_list));
#else
#ifdef __va_copy
__va_copy(lva, va);
#else
lva = va;
#endif
#endif
return vgetargs1(args, format, &lva, FLAG_SIZE_T);
}
/* Handle cleanup of allocated memory in case of exception */
#define GETARGS_CAPSULE_NAME_CLEANUP_PTR "getargs.cleanup_ptr"
#define GETARGS_CAPSULE_NAME_CLEANUP_BUFFER "getargs.cleanup_buffer"
static void
cleanup_ptr(PyObject *self)
{
void *ptr = PyCapsule_GetPointer(self, GETARGS_CAPSULE_NAME_CLEANUP_PTR);
if (ptr) {
PyMem_FREE(ptr);
}
}
static void
cleanup_buffer(PyObject *self)
{
Py_buffer *ptr = (Py_buffer *)PyCapsule_GetPointer(self, GETARGS_CAPSULE_NAME_CLEANUP_BUFFER);
if (ptr) {
PyBuffer_Release(ptr);
}
}
static int
addcleanup(void *ptr, PyObject **freelist, PyCapsule_Destructor destr)
{
PyObject *cobj;
const char *name;
if (!*freelist) {
*freelist = PyList_New(0);
if (!*freelist) {
destr(ptr);
return -1;
}
}
if (destr == cleanup_ptr) {
name = GETARGS_CAPSULE_NAME_CLEANUP_PTR;
} else if (destr == cleanup_buffer) {
name = GETARGS_CAPSULE_NAME_CLEANUP_BUFFER;
} else {
return -1;
}
cobj = PyCapsule_New(ptr, name, destr);
if (!cobj) {
destr(ptr);
return -1;
}
if (PyList_Append(*freelist, cobj)) {
Py_DECREF(cobj);
return -1;
}
Py_DECREF(cobj);
return 0;
}
static int
cleanreturn(int retval, PyObject *freelist)
{
if (freelist && retval != 0) {
/* We were successful, reset the destructors so that they
don't get called. */
Py_ssize_t len = PyList_GET_SIZE(freelist), i;
for (i = 0; i < len; i++)
PyCapsule_SetDestructor(PyList_GET_ITEM(freelist, i), NULL);
}
Py_XDECREF(freelist);
return retval;
}
static int
vgetargs1(PyObject *args, const char *format, va_list *p_va, int flags)
{
char msgbuf[256];
int levels[32];
const char *fname = NULL;
const char *message = NULL;
int min = -1;
int max = 0;
int level = 0;
int endfmt = 0;
const char *formatsave = format;
Py_ssize_t i, len;
char *msg;
PyObject *freelist = NULL;
int compat = flags & FLAG_COMPAT;
assert(compat || (args != (PyObject*)NULL));
flags = flags & ~FLAG_COMPAT;
while (endfmt == 0) {
int c = *format++;
switch (c) {
case '(':
if (level == 0)
max++;
level++;
if (level >= 30)
Py_FatalError("too many tuple nesting levels "
"in argument format string");
break;
case ')':
if (level == 0)
Py_FatalError("excess ')' in getargs format");
else
level--;
break;
case '\0':
endfmt = 1;
break;
case ':':
fname = format;
endfmt = 1;
break;
case ';':
message = format;
endfmt = 1;
break;
default:
if (level == 0) {
if (c == 'O')
max++;
else if (isalpha(Py_CHARMASK(c))) {
if (c != 'e') /* skip encoded */
max++;
} else if (c == '|')
min = max;
}
break;
}
}
if (level != 0)
Py_FatalError(/* '(' */ "missing ')' in getargs format");
if (min < 0)
min = max;
format = formatsave;
if (compat) {
if (max == 0) {
if (args == NULL)
return 1;
PyOS_snprintf(msgbuf, sizeof(msgbuf),
"%.200s%s takes no arguments",
fname==NULL ? "function" : fname,
fname==NULL ? "" : "()");
PyErr_SetString(PyExc_TypeError, msgbuf);
return 0;
}
else if (min == 1 && max == 1) {
if (args == NULL) {
PyOS_snprintf(msgbuf, sizeof(msgbuf),
"%.200s%s takes at least one argument",
fname==NULL ? "function" : fname,
fname==NULL ? "" : "()");
PyErr_SetString(PyExc_TypeError, msgbuf);
return 0;
}
msg = convertitem(args, &format, p_va, flags, levels,
msgbuf, sizeof(msgbuf), &freelist);
if (msg == NULL)
return cleanreturn(1, freelist);
seterror(levels[0], msg, levels+1, fname, message);
return cleanreturn(0, freelist);
}
else {
PyErr_SetString(PyExc_SystemError,
"old style getargs format uses new features");
return 0;
}
}
if (!PyTuple_Check(args)) {
PyErr_SetString(PyExc_SystemError,
"new style getargs format but argument is not a tuple");
return 0;
}
len = PyTuple_GET_SIZE(args);
if (len < min || max < len) {
if (message == NULL) {
PyOS_snprintf(msgbuf, sizeof(msgbuf),
"%.150s%s takes %s %d argument%s "
"(%ld given)",
fname==NULL ? "function" : fname,
fname==NULL ? "" : "()",
min==max ? "exactly"
: len < min ? "at least" : "at most",
len < min ? min : max,
(len < min ? min : max) == 1 ? "" : "s",
Py_SAFE_DOWNCAST(len, Py_ssize_t, long));
message = msgbuf;
}
PyErr_SetString(PyExc_TypeError, message);
return 0;
}
for (i = 0; i < len; i++) {
if (*format == '|')
format++;
msg = convertitem(PyTuple_GET_ITEM(args, i), &format, p_va,
flags, levels, msgbuf,
sizeof(msgbuf), &freelist);
if (msg) {
seterror(i+1, msg, levels, fname, msg);
return cleanreturn(0, freelist);
}
}
if (*format != '\0' && !isalpha(Py_CHARMASK(*format)) &&
*format != '(' &&
*format != '|' && *format != ':' && *format != ';') {
PyErr_Format(PyExc_SystemError,
"bad format string: %.200s", formatsave);
return cleanreturn(0, freelist);
}
return cleanreturn(1, freelist);
}
static void
seterror(int iarg, const char *msg, int *levels, const char *fname,
const char *message)
{
char buf[512];
int i;
char *p = buf;
if (PyErr_Occurred())
return;
else if (message == NULL) {
if (fname != NULL) {
PyOS_snprintf(p, sizeof(buf), "%.200s() ", fname);
p += strlen(p);
}
if (iarg != 0) {
PyOS_snprintf(p, sizeof(buf) - (p - buf),
"argument %d", iarg);
i = 0;
p += strlen(p);
while (levels[i] > 0 && i < 32 && (int)(p-buf) < 220) {
PyOS_snprintf(p, sizeof(buf) - (p - buf),
", item %d", levels[i]-1);
p += strlen(p);
i++;
}
}
else {
PyOS_snprintf(p, sizeof(buf) - (p - buf), "argument");
p += strlen(p);
}
PyOS_snprintf(p, sizeof(buf) - (p - buf), " %.256s", msg);
message = buf;
}
PyErr_SetString(PyExc_TypeError, message);
}
/* Convert a tuple argument.
On entry, *p_format points to the character _after_ the opening '('.
On successful exit, *p_format points to the closing ')'.
If successful:
*p_format and *p_va are updated,
*levels and *msgbuf are untouched,
and NULL is returned.
If the argument is invalid:
*p_format is unchanged,
*p_va is undefined,
*levels is a 0-terminated list of item numbers,
*msgbuf contains an error message, whose format is:
"must be <typename1>, not <typename2>", where:
<typename1> is the name of the expected type, and
<typename2> is the name of the actual type,
and msgbuf is returned.
*/
static char *
converttuple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
int *levels, char *msgbuf, size_t bufsize, int toplevel,
PyObject **freelist)
{
int level = 0;
int n = 0;
const char *format = *p_format;
int i;
for (;;) {
int c = *format++;
if (c == '(') {
if (level == 0)
n++;
level++;
}
else if (c == ')') {
if (level == 0)
break;
level--;
}
else if (c == ':' || c == ';' || c == '\0')
break;
else if (level == 0 && isalpha(Py_CHARMASK(c)))
n++;
}
if (!PySequence_Check(arg) || PyString_Check(arg)) {
levels[0] = 0;
PyOS_snprintf(msgbuf, bufsize,
toplevel ? "expected %d arguments, not %.50s" :
"must be %d-item sequence, not %.50s",
n,
arg == Py_None ? "None" : arg->ob_type->tp_name);
return msgbuf;
}
if ((i = PySequence_Size(arg)) != n) {
levels[0] = 0;
PyOS_snprintf(msgbuf, bufsize,
toplevel ? "expected %d arguments, not %d" :
"must be sequence of length %d, not %d",
n, i);
return msgbuf;
}
format = *p_format;
for (i = 0; i < n; i++) {
char *msg;
PyObject *item;
item = PySequence_GetItem(arg, i);
if (item == NULL) {
PyErr_Clear();
levels[0] = i+1;
levels[1] = 0;
strncpy(msgbuf, "is not retrievable", bufsize);
return msgbuf;
}
msg = convertitem(item, &format, p_va, flags, levels+1,
msgbuf, bufsize, freelist);
/* PySequence_GetItem calls tp->sq_item, which INCREFs */
Py_XDECREF(item);
if (msg != NULL) {
levels[0] = i+1;
return msg;
}
}
*p_format = format;
return NULL;
}
/* Convert a single item. */
static char *
convertitem(PyObject *arg, const char **p_format, va_list *p_va, int flags,
int *levels, char *msgbuf, size_t bufsize, PyObject **freelist)
{
char *msg;
const char *format = *p_format;
if (*format == '(' /* ')' */) {
format++;
msg = converttuple(arg, &format, p_va, flags, levels, msgbuf,
bufsize, 0, freelist);
if (msg == NULL)
format++;
}
else {
msg = convertsimple(arg, &format, p_va, flags,
msgbuf, bufsize, freelist);
if (msg != NULL)
levels[0] = 0;
}
if (msg == NULL)
*p_format = format;
return msg;
}
#define UNICODE_DEFAULT_ENCODING(arg) \
_PyUnicode_AsDefaultEncodedString(arg, NULL)
/* Format an error message generated by convertsimple(). */
static char *
converterr(const char *expected, PyObject *arg, char *msgbuf, size_t bufsize)
{
assert(expected != NULL);
assert(arg != NULL);
PyOS_snprintf(msgbuf, bufsize,
"must be %.50s, not %.50s", expected,
arg == Py_None ? "None" : arg->ob_type->tp_name);
return msgbuf;
}
#define CONV_UNICODE "(unicode conversion error)"
/* explicitly check for float arguments when integers are expected. For now
* signal a warning. Returns true if an exception was raised. */
static int
float_argument_warning(PyObject *arg)
{
if (PyFloat_Check(arg) &&
PyErr_Warn(PyExc_DeprecationWarning,
"integer argument expected, got float" ))
return 1;
else
return 0;
}
/* explicitly check for float arguments when integers are expected. Raises
TypeError and returns true for float arguments. */
static int
float_argument_error(PyObject *arg)
{
if (PyFloat_Check(arg)) {
PyErr_SetString(PyExc_TypeError,
"integer argument expected, got float");
return 1;
}
else
return 0;
}
/* Convert a non-tuple argument. Return NULL if conversion went OK,
or a string with a message describing the failure. The message is
formatted as "must be <desired type>, not <actual type>".
When failing, an exception may or may not have been raised.
Don't call if a tuple is expected.
When you add new format codes, please don't forget poor skipitem() below.
*/
static char *
convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags,
char *msgbuf, size_t bufsize, PyObject **freelist)
{
/* For # codes */
#define FETCH_SIZE int *q=NULL;Py_ssize_t *q2=NULL;\
if (flags & FLAG_SIZE_T) q2=va_arg(*p_va, Py_ssize_t*); \
else q=va_arg(*p_va, int*);
#define STORE_SIZE(s) \
if (flags & FLAG_SIZE_T) \
*q2=s; \
else { \
if (INT_MAX < s) { \
PyErr_SetString(PyExc_OverflowError, \
"size does not fit in an int"); \
return converterr("", arg, msgbuf, bufsize); \
} \
*q=s; \
}
#define BUFFER_LEN ((flags & FLAG_SIZE_T) ? *q2:*q)
const char *format = *p_format;
char c = *format++;
#ifdef Py_USING_UNICODE
PyObject *uarg;
#endif
switch (c) {
case 'b': { /* unsigned byte -- very short int */
char *p = va_arg(*p_va, char *);
long ival;
if (float_argument_error(arg))
return converterr("integer<b>", arg, msgbuf, bufsize);
ival = PyInt_AsLong(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<b>", arg, msgbuf, bufsize);
else if (ival < 0) {
PyErr_SetString(PyExc_OverflowError,
"unsigned byte integer is less than minimum");
return converterr("integer<b>", arg, msgbuf, bufsize);
}
else if (ival > UCHAR_MAX) {
PyErr_SetString(PyExc_OverflowError,
"unsigned byte integer is greater than maximum");
return converterr("integer<b>", arg, msgbuf, bufsize);
}
else
*p = (unsigned char) ival;
break;
}
case 'B': {/* byte sized bitfield - both signed and unsigned
values allowed */
char *p = va_arg(*p_va, char *);
long ival;
if (float_argument_error(arg))
return converterr("integer<B>", arg, msgbuf, bufsize);
ival = PyInt_AsUnsignedLongMask(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<B>", arg, msgbuf, bufsize);
else
*p = (unsigned char) ival;
break;
}
case 'h': {/* signed short int */
short *p = va_arg(*p_va, short *);
long ival;
if (float_argument_error(arg))
return converterr("integer<h>", arg, msgbuf, bufsize);
ival = PyInt_AsLong(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<h>", arg, msgbuf, bufsize);
else if (ival < SHRT_MIN) {
PyErr_SetString(PyExc_OverflowError,
"signed short integer is less than minimum");
return converterr("integer<h>", arg, msgbuf, bufsize);
}
else if (ival > SHRT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"signed short integer is greater than maximum");
return converterr("integer<h>", arg, msgbuf, bufsize);
}
else
*p = (short) ival;
break;
}
case 'H': { /* short int sized bitfield, both signed and
unsigned allowed */
unsigned short *p = va_arg(*p_va, unsigned short *);
long ival;
if (float_argument_error(arg))
return converterr("integer<H>", arg, msgbuf, bufsize);
ival = PyInt_AsUnsignedLongMask(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<H>", arg, msgbuf, bufsize);
else
*p = (unsigned short) ival;
break;
}
case 'i': {/* signed int */
int *p = va_arg(*p_va, int *);
long ival;
if (float_argument_error(arg))
return converterr("integer<i>", arg, msgbuf, bufsize);
ival = PyInt_AsLong(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<i>", arg, msgbuf, bufsize);
else if (ival > INT_MAX) {
PyErr_SetString(PyExc_OverflowError,
"signed integer is greater than maximum");
return converterr("integer<i>", arg, msgbuf, bufsize);
}
else if (ival < INT_MIN) {
PyErr_SetString(PyExc_OverflowError,
"signed integer is less than minimum");
return converterr("integer<i>", arg, msgbuf, bufsize);
}
else
*p = ival;
break;
}
case 'I': { /* int sized bitfield, both signed and
unsigned allowed */
unsigned int *p = va_arg(*p_va, unsigned int *);
unsigned int ival;
if (float_argument_error(arg))
return converterr("integer<I>", arg, msgbuf, bufsize);
ival = (unsigned int)PyInt_AsUnsignedLongMask(arg);
if (ival == (unsigned int)-1 && PyErr_Occurred())
return converterr("integer<I>", arg, msgbuf, bufsize);
else
*p = ival;
break;
}
case 'n': /* Py_ssize_t */
#if SIZEOF_SIZE_T != SIZEOF_LONG
{
Py_ssize_t *p = va_arg(*p_va, Py_ssize_t *);
Py_ssize_t ival;
if (float_argument_error(arg))
return converterr("integer<n>", arg, msgbuf, bufsize);
ival = PyInt_AsSsize_t(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<n>", arg, msgbuf, bufsize);
*p = ival;
break;
}
#endif
/* Fall through from 'n' to 'l' if Py_ssize_t is int */
case 'l': {/* long int */
long *p = va_arg(*p_va, long *);
long ival;
if (float_argument_error(arg))
return converterr("integer<l>", arg, msgbuf, bufsize);
ival = PyInt_AsLong(arg);
if (ival == -1 && PyErr_Occurred())
return converterr("integer<l>", arg, msgbuf, bufsize);
else
*p = ival;
break;
}
case 'k': { /* long sized bitfield */
unsigned long *p = va_arg(*p_va, unsigned long *);
unsigned long ival;
if (PyInt_Check(arg))
ival = PyInt_AsUnsignedLongMask(arg);
else if (PyLong_Check(arg))
ival = PyLong_AsUnsignedLongMask(arg);
else
return converterr("integer<k>", arg, msgbuf, bufsize);
*p = ival;
break;
}
#ifdef HAVE_LONG_LONG
case 'L': {/* PY_LONG_LONG */
PY_LONG_LONG *p = va_arg( *p_va, PY_LONG_LONG * );
PY_LONG_LONG ival;
if (float_argument_warning(arg))
return converterr("long<L>", arg, msgbuf, bufsize);
ival = PyLong_AsLongLong(arg);
if (ival == (PY_LONG_LONG)-1 && PyErr_Occurred() ) {
return converterr("long<L>", arg, msgbuf, bufsize);
} else {
*p = ival;
}
break;
}
case 'K': { /* long long sized bitfield */
unsigned PY_LONG_LONG *p = va_arg(*p_va, unsigned PY_LONG_LONG *);
unsigned PY_LONG_LONG ival;
if (PyInt_Check(arg))
ival = PyInt_AsUnsignedLongMask(arg);
else if (PyLong_Check(arg))
ival = PyLong_AsUnsignedLongLongMask(arg);
else
return converterr("integer<K>", arg, msgbuf, bufsize);
*p = ival;
break;
}
#endif
case 'f': {/* float */
float *p = va_arg(*p_va, float *);
double dval = PyFloat_AsDouble(arg);
if (PyErr_Occurred())
return converterr("float<f>", arg, msgbuf, bufsize);
else
*p = (float) dval;
break;
}
case 'd': {/* double */
double *p = va_arg(*p_va, double *);
double dval = PyFloat_AsDouble(arg);
if (PyErr_Occurred())
return converterr("float<d>", arg, msgbuf, bufsize);
else
*p = dval;
break;
}
#ifndef WITHOUT_COMPLEX
case 'D': {/* complex double */
Py_complex *p = va_arg(*p_va, Py_complex *);
Py_complex cval;
cval = PyComplex_AsCComplex(arg);
if (PyErr_Occurred())
return converterr("complex<D>", arg, msgbuf, bufsize);
else
*p = cval;
break;
}
#endif /* WITHOUT_COMPLEX */
case 'c': {/* char */
char *p = va_arg(*p_va, char *);
if (PyString_Check(arg) && PyString_Size(arg) == 1)
*p = PyString_AS_STRING(arg)[0];
else
return converterr("char", arg, msgbuf, bufsize);
break;
}
case 's': {/* string */
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);
}
if (addcleanup(p, freelist, cleanup_buffer)) {
return converterr(
"(cleanup problem)",
arg, msgbuf, bufsize);
}
format++;
} else if (*format == '#') {
void **p = (void **)va_arg(*p_va, char **);
FETCH_SIZE;
if (PyString_Check(arg)) {
*p = PyString_AS_STRING(arg);
STORE_SIZE(PyString_GET_SIZE(arg));
}
#ifdef Py_USING_UNICODE
else if (PyUnicode_Check(arg)) {
uarg = UNICODE_DEFAULT_ENCODING(arg);
if (uarg == NULL)
return converterr(CONV_UNICODE,
arg, msgbuf, bufsize);
*p = PyString_AS_STRING(uarg);
STORE_SIZE(PyString_GET_SIZE(uarg));
}
#endif
else { /* any buffer-like object */
char *buf;
Py_ssize_t count = convertbuffer(arg, p, &buf);
if (count < 0)
return converterr(buf, arg, msgbuf, bufsize);
STORE_SIZE(count);
}
format++;
} else {
char **p = va_arg(*p_va, char **);
if (PyString_Check(arg))
*p = PyString_AS_STRING(arg);
#ifdef Py_USING_UNICODE
else if (PyUnicode_Check(arg)) {
uarg = UNICODE_DEFAULT_ENCODING(arg);
if (uarg == NULL)
return converterr(CONV_UNICODE,
arg, msgbuf, bufsize);
*p = PyString_AS_STRING(uarg);
}
#endif
else
return converterr("string", arg, msgbuf, bufsize);
if ((Py_ssize_t)strlen(*p) != PyString_Size(arg))
return converterr("string without null bytes",
arg, msgbuf, bufsize);
}
break;
}
case 'z': {/* string, may be NULL (None) */
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);
}
if (addcleanup(p, freelist, cleanup_buffer)) {
return converterr(
"(cleanup problem)",
arg, msgbuf, bufsize);
}
format++;
} else if (*format == '#') { /* any buffer-like object */
void **p = (void **)va_arg(*p_va, char **);
FETCH_SIZE;
if (arg == Py_None) {
*p = 0;
STORE_SIZE(0);
}
else if (PyString_Check(arg)) {
*p = PyString_AS_STRING(arg);
STORE_SIZE(PyString_GET_SIZE(arg));
}
#ifdef Py_USING_UNICODE
else if (PyUnicode_Check(arg)) {
uarg = UNICODE_DEFAULT_ENCODING(arg);
if (uarg == NULL)
return converterr(CONV_UNICODE,
arg, msgbuf, bufsize);
*p = PyString_AS_STRING(uarg);
STORE_SIZE(PyString_GET_SIZE(uarg));
}
#endif
else { /* any buffer-like object */
char *buf;
Py_ssize_t count = convertbuffer(arg, p, &buf);
if (count < 0)
return converterr(buf, arg, msgbuf, bufsize);
STORE_SIZE(count);
}
format++;
} else {
char **p = va_arg(*p_va, char **);
if (arg == Py_None)
*p = 0;
else if (PyString_Check(arg))
*p = PyString_AS_STRING(arg);
#ifdef Py_USING_UNICODE
else if (PyUnicode_Check(arg)) {
uarg = UNICODE_DEFAULT_ENCODING(arg);
if (uarg == NULL)
return converterr(CONV_UNICODE,
arg, msgbuf, bufsize);
*p = PyString_AS_STRING(uarg);
}
#endif
else
return converterr("string or None",
arg, msgbuf, bufsize);
if (*format == '#') {
FETCH_SIZE;
assert(0); /* XXX redundant with if-case */
if (arg == Py_None) {
STORE_SIZE(0);
} else {
STORE_SIZE(PyString_Size(arg));
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