Changeset 388 for python/vendor/current/Python/getargs.c
- Timestamp:
- Mar 19, 2014, 11:11:30 AM (11 years ago)
- File:
-
- 1 edited
-
python/vendor/current/Python/getargs.c (modified) (29 diffs)
Legend:
- Unmodified
- Added
- Removed
-
python/vendor/current/Python/getargs.c
r2 r388 8 8 9 9 #ifdef __cplusplus 10 extern "C" { 10 extern "C" { 11 11 #endif 12 12 int PyArg_Parse(PyObject *, const char *, ...); … … 15 15 16 16 int PyArg_ParseTupleAndKeywords(PyObject *, PyObject *, 17 17 const char *, char **, ...); 18 18 int PyArg_VaParseTupleAndKeywords(PyObject *, PyObject *, 19 19 const char *, char **, va_list); 20 20 21 21 #ifdef HAVE_DECLSPEC_DLL … … 38 38 static int vgetargs1(PyObject *, const char *, va_list *, int); 39 39 static void seterror(int, const char *, int *, const char *, const char *); 40 static char *convertitem(PyObject *, const char **, va_list *, int, int *, 40 static char *convertitem(PyObject *, const char **, va_list *, int, int *, 41 41 char *, size_t, PyObject **); 42 42 static char *converttuple(PyObject *, const char **, va_list *, int, 43 43 int *, char *, size_t, int, PyObject **); 44 44 static char *convertsimple(PyObject *, const char **, va_list *, int, char *, 45 45 size_t, PyObject **); 46 46 static Py_ssize_t convertbuffer(PyObject *, void **p, char **); 47 47 static int getbuffer(PyObject *, Py_buffer *, char**); 48 48 49 49 static int vgetargskeywords(PyObject *, PyObject *, 50 50 const char *, char **, va_list *, int); 51 51 static char *skipitem(const char **, va_list *, int); 52 52 … … 54 54 PyArg_Parse(PyObject *args, const char *format, ...) 55 55 { 56 57 58 59 60 61 62 56 int retval; 57 va_list va; 58 59 va_start(va, format); 60 retval = vgetargs1(args, format, &va, FLAG_COMPAT); 61 va_end(va); 62 return retval; 63 63 } 64 64 … … 66 66 _PyArg_Parse_SizeT(PyObject *args, char *format, ...) 67 67 { 68 69 70 71 72 73 74 68 int retval; 69 va_list va; 70 71 va_start(va, format); 72 retval = vgetargs1(args, format, &va, FLAG_COMPAT|FLAG_SIZE_T); 73 va_end(va); 74 return retval; 75 75 } 76 76 … … 79 79 PyArg_ParseTuple(PyObject *args, const char *format, ...) 80 80 { 81 82 83 84 85 86 87 81 int retval; 82 va_list va; 83 84 va_start(va, format); 85 retval = vgetargs1(args, format, &va, 0); 86 va_end(va); 87 return retval; 88 88 } 89 89 … … 91 91 _PyArg_ParseTuple_SizeT(PyObject *args, char *format, ...) 92 92 { 93 94 95 96 97 98 99 93 int retval; 94 va_list va; 95 96 va_start(va, format); 97 retval = vgetargs1(args, format, &va, FLAG_SIZE_T); 98 va_end(va); 99 return retval; 100 100 } 101 101 … … 104 104 PyArg_VaParse(PyObject *args, const char *format, va_list va) 105 105 { 106 106 va_list lva; 107 107 108 108 #ifdef VA_LIST_IS_ARRAY 109 109 memcpy(lva, va, sizeof(va_list)); 110 110 #else 111 111 #ifdef __va_copy 112 112 __va_copy(lva, va); 113 113 #else 114 115 #endif 116 #endif 117 118 114 lva = va; 115 #endif 116 #endif 117 118 return vgetargs1(args, format, &lva, 0); 119 119 } 120 120 … … 122 122 _PyArg_VaParse_SizeT(PyObject *args, char *format, va_list va) 123 123 { 124 124 va_list lva; 125 125 126 126 #ifdef VA_LIST_IS_ARRAY 127 127 memcpy(lva, va, sizeof(va_list)); 128 128 #else 129 129 #ifdef __va_copy 130 130 __va_copy(lva, va); 131 131 #else 132 133 #endif 134 #endif 135 136 132 lva = va; 133 #endif 134 #endif 135 136 return vgetargs1(args, format, &lva, FLAG_SIZE_T); 137 137 } 138 138 … … 140 140 /* Handle cleanup of allocated memory in case of exception */ 141 141 142 #define GETARGS_CAPSULE_NAME_CLEANUP_PTR "getargs.cleanup_ptr" 143 #define GETARGS_CAPSULE_NAME_CLEANUP_BUFFER "getargs.cleanup_buffer" 144 142 145 static void 143 cleanup_ptr(void *ptr) 144 { 145 PyMem_FREE(ptr); 146 cleanup_ptr(PyObject *self) 147 { 148 void *ptr = PyCapsule_GetPointer(self, GETARGS_CAPSULE_NAME_CLEANUP_PTR); 149 if (ptr) { 150 PyMem_FREE(ptr); 151 } 146 152 } 147 153 148 154 static void 149 cleanup_buffer(void *ptr) 150 { 151 PyBuffer_Release((Py_buffer *) ptr); 155 cleanup_buffer(PyObject *self) 156 { 157 Py_buffer *ptr = (Py_buffer *)PyCapsule_GetPointer(self, GETARGS_CAPSULE_NAME_CLEANUP_BUFFER); 158 if (ptr) { 159 PyBuffer_Release(ptr); 160 } 152 161 } 153 162 154 163 static int 155 addcleanup(void *ptr, PyObject **freelist, void (*destr)(void *)) 156 { 157 PyObject *cobj; 158 if (!*freelist) { 159 *freelist = PyList_New(0); 160 if (!*freelist) { 161 destr(ptr); 162 return -1; 163 } 164 } 165 cobj = PyCObject_FromVoidPtr(ptr, destr); 166 if (!cobj) { 167 destr(ptr); 168 return -1; 169 } 170 if (PyList_Append(*freelist, cobj)) { 171 Py_DECREF(cobj); 172 return -1; 173 } 164 addcleanup(void *ptr, PyObject **freelist, PyCapsule_Destructor destr) 165 { 166 PyObject *cobj; 167 const char *name; 168 169 if (!*freelist) { 170 *freelist = PyList_New(0); 171 if (!*freelist) { 172 destr(ptr); 173 return -1; 174 } 175 } 176 177 if (destr == cleanup_ptr) { 178 name = GETARGS_CAPSULE_NAME_CLEANUP_PTR; 179 } else if (destr == cleanup_buffer) { 180 name = GETARGS_CAPSULE_NAME_CLEANUP_BUFFER; 181 } else { 182 return -1; 183 } 184 cobj = PyCapsule_New(ptr, name, destr); 185 if (!cobj) { 186 destr(ptr); 187 return -1; 188 } 189 if (PyList_Append(*freelist, cobj)) { 174 190 Py_DECREF(cobj); 175 return 0; 191 return -1; 192 } 193 Py_DECREF(cobj); 194 return 0; 176 195 } 177 196 … … 179 198 cleanreturn(int retval, PyObject *freelist) 180 199 { 181 if (freelist && retval != 0) { 182 /* We were successful, reset the destructors so that they 183 don't get called. */ 184 Py_ssize_t len = PyList_GET_SIZE(freelist), i; 185 for (i = 0; i < len; i++) 186 ((PyCObject *) PyList_GET_ITEM(freelist, i)) 187 ->destructor = NULL; 188 } 189 Py_XDECREF(freelist); 190 return retval; 200 if (freelist && retval != 0) { 201 /* We were successful, reset the destructors so that they 202 don't get called. */ 203 Py_ssize_t len = PyList_GET_SIZE(freelist), i; 204 for (i = 0; i < len; i++) 205 PyCapsule_SetDestructor(PyList_GET_ITEM(freelist, i), NULL); 206 } 207 Py_XDECREF(freelist); 208 return retval; 191 209 } 192 210 … … 195 213 vgetargs1(PyObject *args, const char *format, va_list *p_va, int flags) 196 214 { 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 msg = convertitem(args, &format, p_va, flags, levels, 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 flags, levels, msgbuf, 329 330 331 seterror(i+1, msg, levels, fname, message);332 333 334 335 336 337 338 339 340 341 342 343 344 215 char msgbuf[256]; 216 int levels[32]; 217 const char *fname = NULL; 218 const char *message = NULL; 219 int min = -1; 220 int max = 0; 221 int level = 0; 222 int endfmt = 0; 223 const char *formatsave = format; 224 Py_ssize_t i, len; 225 char *msg; 226 PyObject *freelist = NULL; 227 int compat = flags & FLAG_COMPAT; 228 229 assert(compat || (args != (PyObject*)NULL)); 230 flags = flags & ~FLAG_COMPAT; 231 232 while (endfmt == 0) { 233 int c = *format++; 234 switch (c) { 235 case '(': 236 if (level == 0) 237 max++; 238 level++; 239 if (level >= 30) 240 Py_FatalError("too many tuple nesting levels " 241 "in argument format string"); 242 break; 243 case ')': 244 if (level == 0) 245 Py_FatalError("excess ')' in getargs format"); 246 else 247 level--; 248 break; 249 case '\0': 250 endfmt = 1; 251 break; 252 case ':': 253 fname = format; 254 endfmt = 1; 255 break; 256 case ';': 257 message = format; 258 endfmt = 1; 259 break; 260 default: 261 if (level == 0) { 262 if (c == 'O') 263 max++; 264 else if (isalpha(Py_CHARMASK(c))) { 265 if (c != 'e') /* skip encoded */ 266 max++; 267 } else if (c == '|') 268 min = max; 269 } 270 break; 271 } 272 } 273 274 if (level != 0) 275 Py_FatalError(/* '(' */ "missing ')' in getargs format"); 276 277 if (min < 0) 278 min = max; 279 280 format = formatsave; 281 282 if (compat) { 283 if (max == 0) { 284 if (args == NULL) 285 return 1; 286 PyOS_snprintf(msgbuf, sizeof(msgbuf), 287 "%.200s%s takes no arguments", 288 fname==NULL ? "function" : fname, 289 fname==NULL ? "" : "()"); 290 PyErr_SetString(PyExc_TypeError, msgbuf); 291 return 0; 292 } 293 else if (min == 1 && max == 1) { 294 if (args == NULL) { 295 PyOS_snprintf(msgbuf, sizeof(msgbuf), 296 "%.200s%s takes at least one argument", 297 fname==NULL ? "function" : fname, 298 fname==NULL ? "" : "()"); 299 PyErr_SetString(PyExc_TypeError, msgbuf); 300 return 0; 301 } 302 msg = convertitem(args, &format, p_va, flags, levels, 303 msgbuf, sizeof(msgbuf), &freelist); 304 if (msg == NULL) 305 return cleanreturn(1, freelist); 306 seterror(levels[0], msg, levels+1, fname, message); 307 return cleanreturn(0, freelist); 308 } 309 else { 310 PyErr_SetString(PyExc_SystemError, 311 "old style getargs format uses new features"); 312 return 0; 313 } 314 } 315 316 if (!PyTuple_Check(args)) { 317 PyErr_SetString(PyExc_SystemError, 318 "new style getargs format but argument is not a tuple"); 319 return 0; 320 } 321 322 len = PyTuple_GET_SIZE(args); 323 324 if (len < min || max < len) { 325 if (message == NULL) { 326 PyOS_snprintf(msgbuf, sizeof(msgbuf), 327 "%.150s%s takes %s %d argument%s " 328 "(%ld given)", 329 fname==NULL ? "function" : fname, 330 fname==NULL ? "" : "()", 331 min==max ? "exactly" 332 : len < min ? "at least" : "at most", 333 len < min ? min : max, 334 (len < min ? min : max) == 1 ? "" : "s", 335 Py_SAFE_DOWNCAST(len, Py_ssize_t, long)); 336 message = msgbuf; 337 } 338 PyErr_SetString(PyExc_TypeError, message); 339 return 0; 340 } 341 342 for (i = 0; i < len; i++) { 343 if (*format == '|') 344 format++; 345 msg = convertitem(PyTuple_GET_ITEM(args, i), &format, p_va, 346 flags, levels, msgbuf, 347 sizeof(msgbuf), &freelist); 348 if (msg) { 349 seterror(i+1, msg, levels, fname, msg); 350 return cleanreturn(0, freelist); 351 } 352 } 353 354 if (*format != '\0' && !isalpha(Py_CHARMASK(*format)) && 355 *format != '(' && 356 *format != '|' && *format != ':' && *format != ';') { 357 PyErr_Format(PyExc_SystemError, 358 "bad format string: %.200s", formatsave); 359 return cleanreturn(0, freelist); 360 } 361 362 return cleanreturn(1, freelist); 345 363 } 346 364 … … 351 369 const char *message) 352 370 { 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 371 char buf[512]; 372 int i; 373 char *p = buf; 374 375 if (PyErr_Occurred()) 376 return; 377 else if (message == NULL) { 378 if (fname != NULL) { 379 PyOS_snprintf(p, sizeof(buf), "%.200s() ", fname); 380 p += strlen(p); 381 } 382 if (iarg != 0) { 383 PyOS_snprintf(p, sizeof(buf) - (p - buf), 384 "argument %d", iarg); 385 i = 0; 386 p += strlen(p); 387 while (levels[i] > 0 && i < 32 && (int)(p-buf) < 220) { 388 PyOS_snprintf(p, sizeof(buf) - (p - buf), 389 ", item %d", levels[i]-1); 390 p += strlen(p); 391 i++; 392 } 393 } 394 else { 395 PyOS_snprintf(p, sizeof(buf) - (p - buf), "argument"); 396 p += strlen(p); 397 } 398 PyOS_snprintf(p, sizeof(buf) - (p - buf), " %.256s", msg); 399 message = buf; 400 } 401 PyErr_SetString(PyExc_TypeError, message); 384 402 } 385 403 … … 397 415 *levels is a 0-terminated list of item numbers, 398 416 *msgbuf contains an error message, whose format is: 399 400 401 417 "must be <typename1>, not <typename2>", where: 418 <typename1> is the name of the expected type, and 419 <typename2> is the name of the actual type, 402 420 and msgbuf is returned. 403 421 */ … … 405 423 static char * 406 424 converttuple(PyObject *arg, const char **p_format, va_list *p_va, int flags, 407 int *levels, char *msgbuf, size_t bufsize, int toplevel, 425 int *levels, char *msgbuf, size_t bufsize, int toplevel, 408 426 PyObject **freelist) 409 427 { 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 n, 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 msg = convertitem(item, &format, p_va, flags, levels+1, 465 466 467 468 469 470 471 472 473 474 475 428 int level = 0; 429 int n = 0; 430 const char *format = *p_format; 431 int i; 432 433 for (;;) { 434 int c = *format++; 435 if (c == '(') { 436 if (level == 0) 437 n++; 438 level++; 439 } 440 else if (c == ')') { 441 if (level == 0) 442 break; 443 level--; 444 } 445 else if (c == ':' || c == ';' || c == '\0') 446 break; 447 else if (level == 0 && isalpha(Py_CHARMASK(c))) 448 n++; 449 } 450 451 if (!PySequence_Check(arg) || PyString_Check(arg)) { 452 levels[0] = 0; 453 PyOS_snprintf(msgbuf, bufsize, 454 toplevel ? "expected %d arguments, not %.50s" : 455 "must be %d-item sequence, not %.50s", 456 n, 457 arg == Py_None ? "None" : arg->ob_type->tp_name); 458 return msgbuf; 459 } 460 461 if ((i = PySequence_Size(arg)) != n) { 462 levels[0] = 0; 463 PyOS_snprintf(msgbuf, bufsize, 464 toplevel ? "expected %d arguments, not %d" : 465 "must be sequence of length %d, not %d", 466 n, i); 467 return msgbuf; 468 } 469 470 format = *p_format; 471 for (i = 0; i < n; i++) { 472 char *msg; 473 PyObject *item; 474 item = PySequence_GetItem(arg, i); 475 if (item == NULL) { 476 PyErr_Clear(); 477 levels[0] = i+1; 478 levels[1] = 0; 479 strncpy(msgbuf, "is not retrievable", bufsize); 480 return msgbuf; 481 } 482 msg = convertitem(item, &format, p_va, flags, levels+1, 483 msgbuf, bufsize, freelist); 484 /* PySequence_GetItem calls tp->sq_item, which INCREFs */ 485 Py_XDECREF(item); 486 if (msg != NULL) { 487 levels[0] = i+1; 488 return msg; 489 } 490 } 491 492 *p_format = format; 493 return NULL; 476 494 } 477 495 … … 483 501 int *levels, char *msgbuf, size_t bufsize, PyObject **freelist) 484 502 { 485 486 487 488 489 490 msg = converttuple(arg, &format, p_va, flags, levels, msgbuf, 491 492 493 494 495 496 msg = convertsimple(arg, &format, p_va, flags, 497 498 499 500 501 502 503 503 char *msg; 504 const char *format = *p_format; 505 506 if (*format == '(' /* ')' */) { 507 format++; 508 msg = converttuple(arg, &format, p_va, flags, levels, msgbuf, 509 bufsize, 0, freelist); 510 if (msg == NULL) 511 format++; 512 } 513 else { 514 msg = convertsimple(arg, &format, p_va, flags, 515 msgbuf, bufsize, freelist); 516 if (msg != NULL) 517 levels[0] = 0; 518 } 519 if (msg == NULL) 520 *p_format = format; 521 return msg; 504 522 } 505 523 … … 507 525 508 526 #define UNICODE_DEFAULT_ENCODING(arg) \ 509 527 _PyUnicode_AsDefaultEncodedString(arg, NULL) 510 528 511 529 /* Format an error message generated by convertsimple(). */ … … 514 532 converterr(const char *expected, PyObject *arg, char *msgbuf, size_t bufsize) 515 533 { 516 517 assert(arg != NULL); 518 519 520 521 534 assert(expected != NULL); 535 assert(arg != NULL); 536 PyOS_snprintf(msgbuf, bufsize, 537 "must be %.50s, not %.50s", expected, 538 arg == Py_None ? "None" : arg->ob_type->tp_name); 539 return msgbuf; 522 540 } 523 541 … … 527 545 * signal a warning. Returns true if an exception was raised. */ 528 546 static int 547 float_argument_warning(PyObject *arg) 548 { 549 if (PyFloat_Check(arg) && 550 PyErr_Warn(PyExc_DeprecationWarning, 551 "integer argument expected, got float" )) 552 return 1; 553 else 554 return 0; 555 } 556 557 /* explicitly check for float arguments when integers are expected. Raises 558 TypeError and returns true for float arguments. */ 559 static int 529 560 float_argument_error(PyObject *arg) 530 561 { 531 if (PyFloat_Check(arg) && 532 PyErr_Warn(PyExc_DeprecationWarning, 533 "integer argument expected, got float" )) 534 return 1; 535 else 536 return 0; 562 if (PyFloat_Check(arg)) { 563 PyErr_SetString(PyExc_TypeError, 564 "integer argument expected, got float"); 565 return 1; 566 } 567 else 568 return 0; 537 569 } 538 570 … … 550 582 char *msgbuf, size_t bufsize, PyObject **freelist) 551 583 { 552 /* For # codes */ 553 #define FETCH_SIZE int *q=NULL;Py_ssize_t *q2=NULL;\ 554 if (flags & FLAG_SIZE_T) q2=va_arg(*p_va, Py_ssize_t*); \ 555 else q=va_arg(*p_va, int*); 556 #define STORE_SIZE(s) if (flags & FLAG_SIZE_T) *q2=s; else *q=s; 584 /* For # codes */ 585 #define FETCH_SIZE int *q=NULL;Py_ssize_t *q2=NULL;\ 586 if (flags & FLAG_SIZE_T) q2=va_arg(*p_va, Py_ssize_t*); \ 587 else q=va_arg(*p_va, int*); 588 #define STORE_SIZE(s) \ 589 if (flags & FLAG_SIZE_T) \ 590 *q2=s; \ 591 else { \ 592 if (INT_MAX < s) { \ 593 PyErr_SetString(PyExc_OverflowError, \ 594 "size does not fit in an int"); \ 595 return converterr("", arg, msgbuf, bufsize); \ 596 } \ 597 *q=s; \ 598 } 557 599 #define BUFFER_LEN ((flags & FLAG_SIZE_T) ? *q2:*q) 558 600 559 560 601 const char *format = *p_format; 602 char c = *format++; 561 603 #ifdef Py_USING_UNICODE 562 563 #endif 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 values allowed */ 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 unsigned allowed */ 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 unsigned allowed */ 666 667 668 669 670 671 672 673 674 675 676 677 678 604 PyObject *uarg; 605 #endif 606 607 switch (c) { 608 609 case 'b': { /* unsigned byte -- very short int */ 610 char *p = va_arg(*p_va, char *); 611 long ival; 612 if (float_argument_error(arg)) 613 return converterr("integer<b>", arg, msgbuf, bufsize); 614 ival = PyInt_AsLong(arg); 615 if (ival == -1 && PyErr_Occurred()) 616 return converterr("integer<b>", arg, msgbuf, bufsize); 617 else if (ival < 0) { 618 PyErr_SetString(PyExc_OverflowError, 619 "unsigned byte integer is less than minimum"); 620 return converterr("integer<b>", arg, msgbuf, bufsize); 621 } 622 else if (ival > UCHAR_MAX) { 623 PyErr_SetString(PyExc_OverflowError, 624 "unsigned byte integer is greater than maximum"); 625 return converterr("integer<b>", arg, msgbuf, bufsize); 626 } 627 else 628 *p = (unsigned char) ival; 629 break; 630 } 631 632 case 'B': {/* byte sized bitfield - both signed and unsigned 633 values allowed */ 634 char *p = va_arg(*p_va, char *); 635 long ival; 636 if (float_argument_error(arg)) 637 return converterr("integer<B>", arg, msgbuf, bufsize); 638 ival = PyInt_AsUnsignedLongMask(arg); 639 if (ival == -1 && PyErr_Occurred()) 640 return converterr("integer<B>", arg, msgbuf, bufsize); 641 else 642 *p = (unsigned char) ival; 643 break; 644 } 645 646 case 'h': {/* signed short int */ 647 short *p = va_arg(*p_va, short *); 648 long ival; 649 if (float_argument_error(arg)) 650 return converterr("integer<h>", arg, msgbuf, bufsize); 651 ival = PyInt_AsLong(arg); 652 if (ival == -1 && PyErr_Occurred()) 653 return converterr("integer<h>", arg, msgbuf, bufsize); 654 else if (ival < SHRT_MIN) { 655 PyErr_SetString(PyExc_OverflowError, 656 "signed short integer is less than minimum"); 657 return converterr("integer<h>", arg, msgbuf, bufsize); 658 } 659 else if (ival > SHRT_MAX) { 660 PyErr_SetString(PyExc_OverflowError, 661 "signed short integer is greater than maximum"); 662 return converterr("integer<h>", arg, msgbuf, bufsize); 663 } 664 else 665 *p = (short) ival; 666 break; 667 } 668 669 case 'H': { /* short int sized bitfield, both signed and 670 unsigned allowed */ 671 unsigned short *p = va_arg(*p_va, unsigned short *); 672 long ival; 673 if (float_argument_error(arg)) 674 return converterr("integer<H>", arg, msgbuf, bufsize); 675 ival = PyInt_AsUnsignedLongMask(arg); 676 if (ival == -1 && PyErr_Occurred()) 677 return converterr("integer<H>", arg, msgbuf, bufsize); 678 else 679 *p = (unsigned short) ival; 680 break; 681 } 682 683 case 'i': {/* signed int */ 684 int *p = va_arg(*p_va, int *); 685 long ival; 686 if (float_argument_error(arg)) 687 return converterr("integer<i>", arg, msgbuf, bufsize); 688 ival = PyInt_AsLong(arg); 689 if (ival == -1 && PyErr_Occurred()) 690 return converterr("integer<i>", arg, msgbuf, bufsize); 691 else if (ival > INT_MAX) { 692 PyErr_SetString(PyExc_OverflowError, 693 "signed integer is greater than maximum"); 694 return converterr("integer<i>", arg, msgbuf, bufsize); 695 } 696 else if (ival < INT_MIN) { 697 PyErr_SetString(PyExc_OverflowError, 698 "signed integer is less than minimum"); 699 return converterr("integer<i>", arg, msgbuf, bufsize); 700 } 701 else 702 *p = ival; 703 break; 704 } 705 706 case 'I': { /* int sized bitfield, both signed and 707 unsigned allowed */ 708 unsigned int *p = va_arg(*p_va, unsigned int *); 709 unsigned int ival; 710 if (float_argument_error(arg)) 711 return converterr("integer<I>", arg, msgbuf, bufsize); 712 ival = (unsigned int)PyInt_AsUnsignedLongMask(arg); 713 if (ival == (unsigned int)-1 && PyErr_Occurred()) 714 return converterr("integer<I>", arg, msgbuf, bufsize); 715 else 716 *p = ival; 717 break; 718 } 719 720 case 'n': /* Py_ssize_t */ 679 721 #if SIZEOF_SIZE_T != SIZEOF_LONG 680 681 682 683 684 685 686 687 688 689 690 691 #endif 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 722 { 723 Py_ssize_t *p = va_arg(*p_va, Py_ssize_t *); 724 Py_ssize_t ival; 725 if (float_argument_error(arg)) 726 return converterr("integer<n>", arg, msgbuf, bufsize); 727 ival = PyInt_AsSsize_t(arg); 728 if (ival == -1 && PyErr_Occurred()) 729 return converterr("integer<n>", arg, msgbuf, bufsize); 730 *p = ival; 731 break; 732 } 733 #endif 734 /* Fall through from 'n' to 'l' if Py_ssize_t is int */ 735 case 'l': {/* long int */ 736 long *p = va_arg(*p_va, long *); 737 long ival; 738 if (float_argument_error(arg)) 739 return converterr("integer<l>", arg, msgbuf, bufsize); 740 ival = PyInt_AsLong(arg); 741 if (ival == -1 && PyErr_Occurred()) 742 return converterr("integer<l>", arg, msgbuf, bufsize); 743 else 744 *p = ival; 745 break; 746 } 747 748 case 'k': { /* long sized bitfield */ 749 unsigned long *p = va_arg(*p_va, unsigned long *); 750 unsigned long ival; 751 if (PyInt_Check(arg)) 752 ival = PyInt_AsUnsignedLongMask(arg); 753 else if (PyLong_Check(arg)) 754 ival = PyLong_AsUnsignedLongMask(arg); 755 else 756 return converterr("integer<k>", arg, msgbuf, bufsize); 757 *p = ival; 758 break; 759 } 760 719 761 #ifdef HAVE_LONG_LONG 720 case 'L': {/* PY_LONG_LONG */ 721 PY_LONG_LONG *p = va_arg( *p_va, PY_LONG_LONG * ); 722 PY_LONG_LONG ival = PyLong_AsLongLong( arg ); 723 if (ival == (PY_LONG_LONG)-1 && PyErr_Occurred() ) { 724 return converterr("long<L>", arg, msgbuf, bufsize); 725 } else { 726 *p = ival; 727 } 728 break; 729 } 730 731 case 'K': { /* long long sized bitfield */ 732 unsigned PY_LONG_LONG *p = va_arg(*p_va, unsigned PY_LONG_LONG *); 733 unsigned PY_LONG_LONG ival; 734 if (PyInt_Check(arg)) 735 ival = PyInt_AsUnsignedLongMask(arg); 736 else if (PyLong_Check(arg)) 737 ival = PyLong_AsUnsignedLongLongMask(arg); 738 else 739 return converterr("integer<K>", arg, msgbuf, bufsize); 740 *p = ival; 741 break; 742 } 743 #endif 744 745 case 'f': {/* float */ 746 float *p = va_arg(*p_va, float *); 747 double dval = PyFloat_AsDouble(arg); 748 if (PyErr_Occurred()) 749 return converterr("float<f>", arg, msgbuf, bufsize); 750 else 751 *p = (float) dval; 752 break; 753 } 754 755 case 'd': {/* double */ 756 double *p = va_arg(*p_va, double *); 757 double dval = PyFloat_AsDouble(arg); 758 if (PyErr_Occurred()) 759 return converterr("float<d>", arg, msgbuf, bufsize); 760 else 761 *p = dval; 762 break; 763 } 764 762 case 'L': {/* PY_LONG_LONG */ 763 PY_LONG_LONG *p = va_arg( *p_va, PY_LONG_LONG * ); 764 PY_LONG_LONG ival; 765 if (float_argument_warning(arg)) 766 return converterr("long<L>", arg, msgbuf, bufsize); 767 ival = PyLong_AsLongLong(arg); 768 if (ival == (PY_LONG_LONG)-1 && PyErr_Occurred() ) { 769 return converterr("long<L>", arg, msgbuf, bufsize); 770 } else { 771 *p = ival; 772 } 773 break; 774 } 775 776 case 'K': { /* long long sized bitfield */ 777 unsigned PY_LONG_LONG *p = va_arg(*p_va, unsigned PY_LONG_LONG *); 778 unsigned PY_LONG_LONG ival; 779 if (PyInt_Check(arg)) 780 ival = PyInt_AsUnsignedLongMask(arg); 781 else if (PyLong_Check(arg)) 782 ival = PyLong_AsUnsignedLongLongMask(arg); 783 else 784 return converterr("integer<K>", arg, msgbuf, bufsize); 785 *p = ival; 786 break; 787 } 788 #endif 789 790 case 'f': {/* float */ 791 float *p = va_arg(*p_va, float *); 792 double dval = PyFloat_AsDouble(arg); 793 if (PyErr_Occurred()) 794 return converterr("float<f>", arg, msgbuf, bufsize); 795 else 796 *p = (float) dval; 797 break; 798 } 799 800 case 'd': {/* double */ 801 double *p = va_arg(*p_va, double *); 802 double dval = PyFloat_AsDouble(arg); 803 if (PyErr_Occurred()) 804 return converterr("float<d>", arg, msgbuf, bufsize); 805 else 806 *p = dval; 807 break; 808 } 809 765 810 #ifndef WITHOUT_COMPLEX 766 767 768 769 770 771 772 773 774 775 811 case 'D': {/* complex double */ 812 Py_complex *p = va_arg(*p_va, Py_complex *); 813 Py_complex cval; 814 cval = PyComplex_AsCComplex(arg); 815 if (PyErr_Occurred()) 816 return converterr("complex<D>", arg, msgbuf, bufsize); 817 else 818 *p = cval; 819 break; 820 } 776 821 #endif /* WITHOUT_COMPLEX */ 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 822 823 case 'c': {/* char */ 824 char *p = va_arg(*p_va, char *); 825 if (PyString_Check(arg) && PyString_Size(arg) == 1) 826 *p = PyString_AS_STRING(arg)[0]; 827 else 828 return converterr("char", arg, msgbuf, bufsize); 829 break; 830 } 831 832 case 's': {/* string */ 833 if (*format == '*') { 834 Py_buffer *p = (Py_buffer *)va_arg(*p_va, Py_buffer *); 835 836 if (PyString_Check(arg)) { 837 PyBuffer_FillInfo(p, arg, 838 PyString_AS_STRING(arg), PyString_GET_SIZE(arg), 839 1, 0); 840 } 796 841 #ifdef Py_USING_UNICODE 797 798 799 800 801 802 803 804 805 806 #endif 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 842 else if (PyUnicode_Check(arg)) { 843 uarg = UNICODE_DEFAULT_ENCODING(arg); 844 if (uarg == NULL) 845 return converterr(CONV_UNICODE, 846 arg, msgbuf, bufsize); 847 PyBuffer_FillInfo(p, arg, 848 PyString_AS_STRING(uarg), PyString_GET_SIZE(uarg), 849 1, 0); 850 } 851 #endif 852 else { /* any buffer-like object */ 853 char *buf; 854 if (getbuffer(arg, p, &buf) < 0) 855 return converterr(buf, arg, msgbuf, bufsize); 856 } 857 if (addcleanup(p, freelist, cleanup_buffer)) { 858 return converterr( 859 "(cleanup problem)", 860 arg, msgbuf, bufsize); 861 } 862 format++; 863 } else if (*format == '#') { 864 void **p = (void **)va_arg(*p_va, char **); 865 FETCH_SIZE; 866 867 if (PyString_Check(arg)) { 868 *p = PyString_AS_STRING(arg); 869 STORE_SIZE(PyString_GET_SIZE(arg)); 870 } 826 871 #ifdef Py_USING_UNICODE 827 828 829 830 831 832 833 834 835 #endif 836 837 838 839 840 841 842 843 844 845 846 847 848 872 else if (PyUnicode_Check(arg)) { 873 uarg = UNICODE_DEFAULT_ENCODING(arg); 874 if (uarg == NULL) 875 return converterr(CONV_UNICODE, 876 arg, msgbuf, bufsize); 877 *p = PyString_AS_STRING(uarg); 878 STORE_SIZE(PyString_GET_SIZE(uarg)); 879 } 880 #endif 881 else { /* any buffer-like object */ 882 char *buf; 883 Py_ssize_t count = convertbuffer(arg, p, &buf); 884 if (count < 0) 885 return converterr(buf, arg, msgbuf, bufsize); 886 STORE_SIZE(count); 887 } 888 format++; 889 } else { 890 char **p = va_arg(*p_va, char **); 891 892 if (PyString_Check(arg)) 893 *p = PyString_AS_STRING(arg); 849 894 #ifdef Py_USING_UNICODE 850 851 852 853 854 855 856 857 #endif 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 895 else if (PyUnicode_Check(arg)) { 896 uarg = UNICODE_DEFAULT_ENCODING(arg); 897 if (uarg == NULL) 898 return converterr(CONV_UNICODE, 899 arg, msgbuf, bufsize); 900 *p = PyString_AS_STRING(uarg); 901 } 902 #endif 903 else 904 return converterr("string", arg, msgbuf, bufsize); 905 if ((Py_ssize_t)strlen(*p) != PyString_Size(arg)) 906 return converterr("string without null bytes", 907 arg, msgbuf, bufsize); 908 } 909 break; 910 } 911 912 case 'z': {/* string, may be NULL (None) */ 913 if (*format == '*') { 914 Py_buffer *p = (Py_buffer *)va_arg(*p_va, Py_buffer *); 915 916 if (arg == Py_None) 917 PyBuffer_FillInfo(p, NULL, NULL, 0, 1, 0); 918 else if (PyString_Check(arg)) { 919 PyBuffer_FillInfo(p, arg, 920 PyString_AS_STRING(arg), PyString_GET_SIZE(arg), 921 1, 0); 922 } 878 923 #ifdef Py_USING_UNICODE 879 880 881 882 883 884 885 886 887 888 #endif 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 924 else if (PyUnicode_Check(arg)) { 925 uarg = UNICODE_DEFAULT_ENCODING(arg); 926 if (uarg == NULL) 927 return converterr(CONV_UNICODE, 928 arg, msgbuf, bufsize); 929 PyBuffer_FillInfo(p, arg, 930 PyString_AS_STRING(uarg), PyString_GET_SIZE(uarg), 931 1, 0); 932 } 933 #endif 934 else { /* any buffer-like object */ 935 char *buf; 936 if (getbuffer(arg, p, &buf) < 0) 937 return converterr(buf, arg, msgbuf, bufsize); 938 } 939 if (addcleanup(p, freelist, cleanup_buffer)) { 940 return converterr( 941 "(cleanup problem)", 942 arg, msgbuf, bufsize); 943 } 944 format++; 945 } else if (*format == '#') { /* any buffer-like object */ 946 void **p = (void **)va_arg(*p_va, char **); 947 FETCH_SIZE; 948 949 if (arg == Py_None) { 950 *p = 0; 951 STORE_SIZE(0); 952 } 953 else if (PyString_Check(arg)) { 954 *p = PyString_AS_STRING(arg); 955 STORE_SIZE(PyString_GET_SIZE(arg)); 956 } 912 957 #ifdef Py_USING_UNICODE 913 914 915 916 917 918 919 920 921 #endif 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 958 else if (PyUnicode_Check(arg)) { 959 uarg = UNICODE_DEFAULT_ENCODING(arg); 960 if (uarg == NULL) 961 return converterr(CONV_UNICODE, 962 arg, msgbuf, bufsize); 963 *p = PyString_AS_STRING(uarg); 964 STORE_SIZE(PyString_GET_SIZE(uarg)); 965 } 966 #endif 967 else { /* any buffer-like object */ 968 char *buf; 969 Py_ssize_t count = convertbuffer(arg, p, &buf); 970 if (count < 0) 971 return converterr(buf, arg, msgbuf, bufsize); 972 STORE_SIZE(count); 973 } 974 format++; 975 } else { 976 char **p = va_arg(*p_va, char **); 977 978 if (arg == Py_None) 979 *p = 0; 980 else if (PyString_Check(arg)) 981 *p = PyString_AS_STRING(arg); 937 982 #ifdef Py_USING_UNICODE 938 else if (PyUnicode_Check(arg)) { 939 uarg = UNICODE_DEFAULT_ENCODING(arg); 940 if (uarg == NULL) 941 return converterr(CONV_UNICODE, 942 arg, msgbuf, bufsize); 943 *p = PyString_AS_STRING(uarg); 944 } 945 #endif 946 else 947 return converterr("string or None", 948 arg, msgbuf, bufsize); 949 if (*format == '#') { 950 FETCH_SIZE; 951 assert(0); /* XXX redundant with if-case */ 952 if (arg == Py_None) 953 *q = 0; 954 else 955 *q = PyString_Size(arg); 956 format++; 957 } 958 else if (*p != NULL && 959 (Py_ssize_t)strlen(*p) != PyString_Size(arg)) 960 return converterr( 961 "string without null bytes or None", 962 arg, msgbuf, bufsize); 963 } 964 break; 965 } 966 967 case 'e': {/* encoded string */ 968 char **buffer; 969 const char *encoding; 970 PyObject *s; 971 Py_ssize_t size; 972 int recode_strings; 973 974 /* Get 'e' parameter: the encoding name */ 975 encoding = (const char *)va_arg(*p_va, const char *); 983 else if (PyUnicode_Check(arg)) { 984 uarg = UNICODE_DEFAULT_ENCODING(arg); 985 if (uarg == NULL) 986 return converterr(CONV_UNICODE, 987 arg, msgbuf, bufsize); 988 *p = PyString_AS_STRING(uarg); 989 } 990 #endif 991 else 992 return converterr("string or None", 993 arg, msgbuf, bufsize); 994 if (*format == '#') { 995 FETCH_SIZE; 996 assert(0); /* XXX redundant with if-case */ 997 if (arg == Py_None) { 998 STORE_SIZE(0); 999 } else { 1000 STORE_SIZE(PyString_Size(arg)); 1001 } 1002 format++; 1003 } 1004 else if (*p != NULL && 1005 (Py_ssize_t)strlen(*p) != PyString_Size(arg)) 1006 return converterr( 1007 "string without null bytes or None", 1008 arg, msgbuf, bufsize); 1009 } 1010 break; 1011 } 1012 1013 case 'e': {/* encoded string */ 1014 char **buffer; 1015 const char *encoding; 1016 PyObject *s; 1017 Py_ssize_t size; 1018 int recode_strings; 1019 1020 /* Get 'e' parameter: the encoding name */ 1021 encoding = (const char *)va_arg(*p_va, const char *); 976 1022 #ifdef Py_USING_UNICODE 977 978 979 #endif 980 981 982 983 't' (only recode non-string objects) 984 985 986 987 988 989 990 991 992 993 994 995 996 return converterr("(buffer is NULL)", 997 998 999 1000 1001 1002 1003 1004 1023 if (encoding == NULL) 1024 encoding = PyUnicode_GetDefaultEncoding(); 1025 #endif 1026 1027 /* Get output buffer parameter: 1028 's' (recode all objects via Unicode) or 1029 't' (only recode non-string objects) 1030 */ 1031 if (*format == 's') 1032 recode_strings = 1; 1033 else if (*format == 't') 1034 recode_strings = 0; 1035 else 1036 return converterr( 1037 "(unknown parser marker combination)", 1038 arg, msgbuf, bufsize); 1039 buffer = (char **)va_arg(*p_va, char **); 1040 format++; 1041 if (buffer == NULL) 1042 return converterr("(buffer is NULL)", 1043 arg, msgbuf, bufsize); 1044 1045 /* Encode object */ 1046 if (!recode_strings && PyString_Check(arg)) { 1047 s = arg; 1048 Py_INCREF(s); 1049 } 1050 else { 1005 1051 #ifdef Py_USING_UNICODE 1006 1007 1008 1009 1010 1011 1012 "string or unicode or text buffer", 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1052 PyObject *u; 1053 1054 /* Convert object to Unicode */ 1055 u = PyUnicode_FromObject(arg); 1056 if (u == NULL) 1057 return converterr( 1058 "string or unicode or text buffer", 1059 arg, msgbuf, bufsize); 1060 1061 /* Encode object; use default error handling */ 1062 s = PyUnicode_AsEncodedString(u, 1063 encoding, 1064 NULL); 1065 Py_DECREF(u); 1066 if (s == NULL) 1067 return converterr("(encoding failed)", 1068 arg, msgbuf, bufsize); 1069 if (!PyString_Check(s)) { 1070 Py_DECREF(s); 1071 return converterr( 1072 "(encoder failed to return a string)", 1073 arg, msgbuf, bufsize); 1074 } 1029 1075 #else 1030 1031 #endif 1032 1033 1034 1035 1036 if (*format == '#') { 1037 1038 1039 1040 1041 1042 1043 1044 usage 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 trailing 0-byte 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 "(buffer overflow)", 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 error raised 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1076 return converterr("string<e>", arg, msgbuf, bufsize); 1077 #endif 1078 } 1079 size = PyString_GET_SIZE(s); 1080 1081 /* Write output; output is guaranteed to be 0-terminated */ 1082 if (*format == '#') { 1083 /* Using buffer length parameter '#': 1084 1085 - if *buffer is NULL, a new buffer of the 1086 needed size is allocated and the data 1087 copied into it; *buffer is updated to point 1088 to the new buffer; the caller is 1089 responsible for PyMem_Free()ing it after 1090 usage 1091 1092 - if *buffer is not NULL, the data is 1093 copied to *buffer; *buffer_len has to be 1094 set to the size of the buffer on input; 1095 buffer overflow is signalled with an error; 1096 buffer has to provide enough room for the 1097 encoded string plus the trailing 0-byte 1098 1099 - in both cases, *buffer_len is updated to 1100 the size of the buffer /excluding/ the 1101 trailing 0-byte 1102 1103 */ 1104 FETCH_SIZE; 1105 1106 format++; 1107 if (q == NULL && q2 == NULL) { 1108 Py_DECREF(s); 1109 return converterr( 1110 "(buffer_len is NULL)", 1111 arg, msgbuf, bufsize); 1112 } 1113 if (*buffer == NULL) { 1114 *buffer = PyMem_NEW(char, size + 1); 1115 if (*buffer == NULL) { 1116 Py_DECREF(s); 1117 return converterr( 1118 "(memory error)", 1119 arg, msgbuf, bufsize); 1120 } 1121 if (addcleanup(*buffer, freelist, cleanup_ptr)) { 1122 Py_DECREF(s); 1123 return converterr( 1124 "(cleanup problem)", 1125 arg, msgbuf, bufsize); 1126 } 1127 } else { 1128 if (size + 1 > BUFFER_LEN) { 1129 Py_DECREF(s); 1130 return converterr( 1131 "(buffer overflow)", 1132 arg, msgbuf, bufsize); 1133 } 1134 } 1135 memcpy(*buffer, 1136 PyString_AS_STRING(s), 1137 size + 1); 1138 STORE_SIZE(size); 1139 } else { 1140 /* Using a 0-terminated buffer: 1141 1142 - the encoded string has to be 0-terminated 1143 for this variant to work; if it is not, an 1144 error raised 1145 1146 - a new buffer of the needed size is 1147 allocated and the data copied into it; 1148 *buffer is updated to point to the new 1149 buffer; the caller is responsible for 1150 PyMem_Free()ing it after usage 1151 1152 */ 1153 if ((Py_ssize_t)strlen(PyString_AS_STRING(s)) 1154 != size) { 1155 Py_DECREF(s); 1156 return converterr( 1157 "encoded string without NULL bytes", 1158 arg, msgbuf, bufsize); 1159 } 1160 *buffer = PyMem_NEW(char, size + 1); 1161 if (*buffer == NULL) { 1162 Py_DECREF(s); 1163 return converterr("(memory error)", 1164 arg, msgbuf, bufsize); 1165 } 1166 if (addcleanup(*buffer, freelist, cleanup_ptr)) { 1167 Py_DECREF(s); 1168 return converterr("(cleanup problem)", 1169 arg, msgbuf, bufsize); 1170 } 1171 memcpy(*buffer, 1172 PyString_AS_STRING(s), 1173 size + 1); 1174 } 1175 Py_DECREF(s); 1176 break; 1177 } 1132 1178 1133 1179 #ifdef Py_USING_UNICODE 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 #endif 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1180 case 'u': {/* raw unicode buffer (Py_UNICODE *) */ 1181 if (*format == '#') { /* any buffer-like object */ 1182 void **p = (void **)va_arg(*p_va, char **); 1183 FETCH_SIZE; 1184 if (PyUnicode_Check(arg)) { 1185 *p = PyUnicode_AS_UNICODE(arg); 1186 STORE_SIZE(PyUnicode_GET_SIZE(arg)); 1187 } 1188 else { 1189 return converterr("cannot convert raw buffers", 1190 arg, msgbuf, bufsize); 1191 } 1192 format++; 1193 } else { 1194 Py_UNICODE **p = va_arg(*p_va, Py_UNICODE **); 1195 if (PyUnicode_Check(arg)) 1196 *p = PyUnicode_AS_UNICODE(arg); 1197 else 1198 return converterr("unicode", arg, msgbuf, bufsize); 1199 } 1200 break; 1201 } 1202 #endif 1203 1204 case 'S': { /* string object */ 1205 PyObject **p = va_arg(*p_va, PyObject **); 1206 if (PyString_Check(arg)) 1207 *p = arg; 1208 else 1209 return converterr("string", arg, msgbuf, bufsize); 1210 break; 1211 } 1212 1167 1213 #ifdef Py_USING_UNICODE 1168 1169 1170 1171 1172 1173 1174 1175 1176 #endif 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 if ((*pred)(arg)) 1196 1197 1198 return converterr("(unspecified)", 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 return converterr("(unspecified)", 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 return converterr("single-segment read-write buffer", 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 "invalid use of 't' format character", 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1214 case 'U': { /* Unicode object */ 1215 PyObject **p = va_arg(*p_va, PyObject **); 1216 if (PyUnicode_Check(arg)) 1217 *p = arg; 1218 else 1219 return converterr("unicode", arg, msgbuf, bufsize); 1220 break; 1221 } 1222 #endif 1223 1224 case 'O': { /* object */ 1225 PyTypeObject *type; 1226 PyObject **p; 1227 if (*format == '!') { 1228 type = va_arg(*p_va, PyTypeObject*); 1229 p = va_arg(*p_va, PyObject **); 1230 format++; 1231 if (PyType_IsSubtype(arg->ob_type, type)) 1232 *p = arg; 1233 else 1234 return converterr(type->tp_name, arg, msgbuf, bufsize); 1235 1236 } 1237 else if (*format == '?') { 1238 inquiry pred = va_arg(*p_va, inquiry); 1239 p = va_arg(*p_va, PyObject **); 1240 format++; 1241 if ((*pred)(arg)) 1242 *p = arg; 1243 else 1244 return converterr("(unspecified)", 1245 arg, msgbuf, bufsize); 1246 1247 } 1248 else if (*format == '&') { 1249 typedef int (*converter)(PyObject *, void *); 1250 converter convert = va_arg(*p_va, converter); 1251 void *addr = va_arg(*p_va, void *); 1252 format++; 1253 if (! (*convert)(arg, addr)) 1254 return converterr("(unspecified)", 1255 arg, msgbuf, bufsize); 1256 } 1257 else { 1258 p = va_arg(*p_va, PyObject **); 1259 *p = arg; 1260 } 1261 break; 1262 } 1263 1264 1265 case 'w': { /* memory buffer, read-write access */ 1266 void **p = va_arg(*p_va, void **); 1267 void *res; 1268 PyBufferProcs *pb = arg->ob_type->tp_as_buffer; 1269 Py_ssize_t count; 1270 1271 if (pb && pb->bf_releasebuffer && *format != '*') 1272 /* Buffer must be released, yet caller does not use 1273 the Py_buffer protocol. */ 1274 return converterr("pinned buffer", arg, msgbuf, bufsize); 1275 1276 if (pb && pb->bf_getbuffer && *format == '*') { 1277 /* Caller is interested in Py_buffer, and the object 1278 supports it directly. */ 1279 format++; 1280 if (pb->bf_getbuffer(arg, (Py_buffer*)p, PyBUF_WRITABLE) < 0) { 1281 PyErr_Clear(); 1282 return converterr("read-write buffer", arg, msgbuf, bufsize); 1283 } 1284 if (addcleanup(p, freelist, cleanup_buffer)) { 1285 return converterr( 1286 "(cleanup problem)", 1287 arg, msgbuf, bufsize); 1288 } 1289 if (!PyBuffer_IsContiguous((Py_buffer*)p, 'C')) 1290 return converterr("contiguous buffer", arg, msgbuf, bufsize); 1291 break; 1292 } 1293 1294 if (pb == NULL || 1295 pb->bf_getwritebuffer == NULL || 1296 pb->bf_getsegcount == NULL) 1297 return converterr("read-write buffer", arg, msgbuf, bufsize); 1298 if ((*pb->bf_getsegcount)(arg, NULL) != 1) 1299 return converterr("single-segment read-write buffer", 1300 arg, msgbuf, bufsize); 1301 if ((count = pb->bf_getwritebuffer(arg, 0, &res)) < 0) 1302 return converterr("(unspecified)", arg, msgbuf, bufsize); 1303 if (*format == '*') { 1304 PyBuffer_FillInfo((Py_buffer*)p, arg, res, count, 1, 0); 1305 format++; 1306 } 1307 else { 1308 *p = res; 1309 if (*format == '#') { 1310 FETCH_SIZE; 1311 STORE_SIZE(count); 1312 format++; 1313 } 1314 } 1315 break; 1316 } 1317 1318 case 't': { /* 8-bit character buffer, read-only access */ 1319 char **p = va_arg(*p_va, char **); 1320 PyBufferProcs *pb = arg->ob_type->tp_as_buffer; 1321 Py_ssize_t count; 1322 1323 if (*format++ != '#') 1324 return converterr( 1325 "invalid use of 't' format character", 1326 arg, msgbuf, bufsize); 1327 if (!PyType_HasFeature(arg->ob_type, 1328 Py_TPFLAGS_HAVE_GETCHARBUFFER) || 1329 pb == NULL || pb->bf_getcharbuffer == NULL || 1330 pb->bf_getsegcount == NULL) 1331 return converterr( 1332 "string or read-only character buffer", 1333 arg, msgbuf, bufsize); 1334 1335 if (pb->bf_getsegcount(arg, NULL) != 1) 1336 return converterr( 1337 "string or single-segment read-only buffer", 1338 arg, msgbuf, bufsize); 1339 1340 if (pb->bf_releasebuffer) 1341 return converterr( 1342 "string or pinned buffer", 1343 arg, msgbuf, bufsize); 1344 1345 count = pb->bf_getcharbuffer(arg, 0, p); 1346 if (count < 0) 1347 return converterr("(unspecified)", arg, msgbuf, bufsize); 1348 { 1349 FETCH_SIZE; 1350 STORE_SIZE(count); 1351 } 1352 break; 1353 } 1354 1355 default: 1356 return converterr("impossible<bad format char>", arg, msgbuf, bufsize); 1357 1358 } 1359 1360 *p_format = format; 1361 return NULL; 1316 1362 } 1317 1363 … … 1319 1365 convertbuffer(PyObject *arg, void **p, char **errmsg) 1320 1366 { 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1367 PyBufferProcs *pb = arg->ob_type->tp_as_buffer; 1368 Py_ssize_t count; 1369 if (pb == NULL || 1370 pb->bf_getreadbuffer == NULL || 1371 pb->bf_getsegcount == NULL || 1372 pb->bf_releasebuffer != NULL) { 1373 *errmsg = "string or read-only buffer"; 1374 return -1; 1375 } 1376 if ((*pb->bf_getsegcount)(arg, NULL) != 1) { 1377 *errmsg = "string or single-segment read-only buffer"; 1378 return -1; 1379 } 1380 if ((count = (*pb->bf_getreadbuffer)(arg, 0, p)) < 0) { 1381 *errmsg = "(unspecified)"; 1382 } 1383 return count; 1338 1384 } 1339 1385 … … 1341 1387 getbuffer(PyObject *arg, Py_buffer *view, char **errmsg) 1342 1388 { 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 PyBuffer_FillInfo(view, NULL, buf, count, 1, 0);1368 1389 void *buf; 1390 Py_ssize_t count; 1391 PyBufferProcs *pb = arg->ob_type->tp_as_buffer; 1392 if (pb == NULL) { 1393 *errmsg = "string or buffer"; 1394 return -1; 1395 } 1396 if (pb->bf_getbuffer) { 1397 if (pb->bf_getbuffer(arg, view, 0) < 0) { 1398 *errmsg = "convertible to a buffer"; 1399 return -1; 1400 } 1401 if (!PyBuffer_IsContiguous(view, 'C')) { 1402 *errmsg = "contiguous buffer"; 1403 return -1; 1404 } 1405 return 0; 1406 } 1407 1408 count = convertbuffer(arg, &buf, errmsg); 1409 if (count < 0) { 1410 *errmsg = "convertible to a buffer"; 1411 return count; 1412 } 1413 PyBuffer_FillInfo(view, arg, buf, count, 1, 0); 1414 return 0; 1369 1415 } 1370 1416 … … 1375 1421 int 1376 1422 PyArg_ParseTupleAndKeywords(PyObject *args, 1377 1378 const char *format, 1379 1380 { 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 retval = vgetargskeywords(args, keywords, format, kwlist, &va, 0); 1395 1396 1423 PyObject *keywords, 1424 const char *format, 1425 char **kwlist, ...) 1426 { 1427 int retval; 1428 va_list va; 1429 1430 if ((args == NULL || !PyTuple_Check(args)) || 1431 (keywords != NULL && !PyDict_Check(keywords)) || 1432 format == NULL || 1433 kwlist == NULL) 1434 { 1435 PyErr_BadInternalCall(); 1436 return 0; 1437 } 1438 1439 va_start(va, kwlist); 1440 retval = vgetargskeywords(args, keywords, format, kwlist, &va, 0); 1441 va_end(va); 1442 return retval; 1397 1443 } 1398 1444 1399 1445 int 1400 1446 _PyArg_ParseTupleAndKeywords_SizeT(PyObject *args, 1401 1402 const char *format, 1403 1404 { 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 retval = vgetargskeywords(args, keywords, format, 1419 1420 1421 1447 PyObject *keywords, 1448 const char *format, 1449 char **kwlist, ...) 1450 { 1451 int retval; 1452 va_list va; 1453 1454 if ((args == NULL || !PyTuple_Check(args)) || 1455 (keywords != NULL && !PyDict_Check(keywords)) || 1456 format == NULL || 1457 kwlist == NULL) 1458 { 1459 PyErr_BadInternalCall(); 1460 return 0; 1461 } 1462 1463 va_start(va, kwlist); 1464 retval = vgetargskeywords(args, keywords, format, 1465 kwlist, &va, FLAG_SIZE_T); 1466 va_end(va); 1467 return retval; 1422 1468 } 1423 1469 … … 1426 1472 PyArg_VaParseTupleAndKeywords(PyObject *args, 1427 1473 PyObject *keywords, 1428 const char *format, 1474 const char *format, 1429 1475 char **kwlist, va_list va) 1430 1476 { 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1477 int retval; 1478 va_list lva; 1479 1480 if ((args == NULL || !PyTuple_Check(args)) || 1481 (keywords != NULL && !PyDict_Check(keywords)) || 1482 format == NULL || 1483 kwlist == NULL) 1484 { 1485 PyErr_BadInternalCall(); 1486 return 0; 1487 } 1442 1488 1443 1489 #ifdef VA_LIST_IS_ARRAY 1444 1490 memcpy(lva, va, sizeof(va_list)); 1445 1491 #else 1446 1492 #ifdef __va_copy 1447 1493 __va_copy(lva, va); 1448 1494 #else 1449 1450 #endif 1451 #endif 1452 1453 retval = vgetargskeywords(args, keywords, format, kwlist, &lva, 0); 1454 1495 lva = va; 1496 #endif 1497 #endif 1498 1499 retval = vgetargskeywords(args, keywords, format, kwlist, &lva, 0); 1500 return retval; 1455 1501 } 1456 1502 1457 1503 int 1458 1504 _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *args, 1459 1460 const char *format, 1461 1462 { 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1505 PyObject *keywords, 1506 const char *format, 1507 char **kwlist, va_list va) 1508 { 1509 int retval; 1510 va_list lva; 1511 1512 if ((args == NULL || !PyTuple_Check(args)) || 1513 (keywords != NULL && !PyDict_Check(keywords)) || 1514 format == NULL || 1515 kwlist == NULL) 1516 { 1517 PyErr_BadInternalCall(); 1518 return 0; 1519 } 1474 1520 1475 1521 #ifdef VA_LIST_IS_ARRAY 1476 1522 memcpy(lva, va, sizeof(va_list)); 1477 1523 #else 1478 1524 #ifdef __va_copy 1479 1525 __va_copy(lva, va); 1480 1526 #else 1481 1482 #endif 1483 #endif 1484 1485 retval = vgetargskeywords(args, keywords, format, 1486 1487 1527 lva = va; 1528 #endif 1529 #endif 1530 1531 retval = vgetargskeywords(args, keywords, format, 1532 kwlist, &lva, FLAG_SIZE_T); 1533 return retval; 1488 1534 } 1489 1535 … … 1492 1538 static int 1493 1539 vgetargskeywords(PyObject *args, PyObject *keywords, const char *format, 1494 1495 { 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 PyErr_SetString(PyExc_TypeError, 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1540 char **kwlist, va_list *p_va, int flags) 1541 { 1542 char msgbuf[512]; 1543 int levels[32]; 1544 const char *fname, *msg, *custom_msg, *keyword; 1545 int min = INT_MAX; 1546 int i, len, nargs, nkeywords; 1547 PyObject *freelist = NULL, *current_arg; 1548 1549 assert(args != NULL && PyTuple_Check(args)); 1550 assert(keywords == NULL || PyDict_Check(keywords)); 1551 assert(format != NULL); 1552 assert(kwlist != NULL); 1553 assert(p_va != NULL); 1554 1555 /* grab the function name or custom error msg first (mutually exclusive) */ 1556 fname = strchr(format, ':'); 1557 if (fname) { 1558 fname++; 1559 custom_msg = NULL; 1560 } 1561 else { 1562 custom_msg = strchr(format,';'); 1563 if (custom_msg) 1564 custom_msg++; 1565 } 1566 1567 /* scan kwlist and get greatest possible nbr of args */ 1568 for (len=0; kwlist[len]; len++) 1569 continue; 1570 1571 nargs = PyTuple_GET_SIZE(args); 1572 nkeywords = (keywords == NULL) ? 0 : PyDict_Size(keywords); 1573 if (nargs + nkeywords > len) { 1574 PyErr_Format(PyExc_TypeError, "%s%s takes at most %d " 1575 "argument%s (%d given)", 1576 (fname == NULL) ? "function" : fname, 1577 (fname == NULL) ? "" : "()", 1578 len, 1579 (len == 1) ? "" : "s", 1580 nargs + nkeywords); 1581 return 0; 1582 } 1583 1584 /* convert tuple args and keyword args in same loop, using kwlist to drive process */ 1585 for (i = 0; i < len; i++) { 1586 keyword = kwlist[i]; 1587 if (*format == '|') { 1588 min = i; 1589 format++; 1590 } 1591 if (IS_END_OF_FORMAT(*format)) { 1592 PyErr_Format(PyExc_RuntimeError, 1593 "More keyword list entries (%d) than " 1594 "format specifiers (%d)", len, i); 1595 return cleanreturn(0, freelist); 1596 } 1597 current_arg = NULL; 1598 if (nkeywords) { 1599 current_arg = PyDict_GetItemString(keywords, keyword); 1600 } 1601 if (current_arg) { 1602 --nkeywords; 1603 if (i < nargs) { 1604 /* arg present in tuple and in dict */ 1605 PyErr_Format(PyExc_TypeError, 1606 "Argument given by name ('%s') " 1607 "and position (%d)", 1608 keyword, i+1); 1609 return cleanreturn(0, freelist); 1610 } 1611 } 1612 else if (nkeywords && PyErr_Occurred()) 1613 return cleanreturn(0, freelist); 1614 else if (i < nargs) 1615 current_arg = PyTuple_GET_ITEM(args, i); 1616 1617 if (current_arg) { 1618 msg = convertitem(current_arg, &format, p_va, flags, 1619 levels, msgbuf, sizeof(msgbuf), &freelist); 1620 if (msg) { 1621 seterror(i+1, msg, levels, fname, custom_msg); 1622 return cleanreturn(0, freelist); 1623 } 1624 continue; 1625 } 1626 1627 if (i < min) { 1628 PyErr_Format(PyExc_TypeError, "Required argument " 1629 "'%s' (pos %d) not found", 1630 keyword, i+1); 1631 return cleanreturn(0, freelist); 1632 } 1633 /* current code reports success when all required args 1634 * fulfilled and no keyword args left, with no further 1635 * validation. XXX Maybe skip this in debug build ? 1636 */ 1637 if (!nkeywords) 1638 return cleanreturn(1, freelist); 1639 1640 /* We are into optional args, skip thru to any remaining 1641 * keyword args */ 1642 msg = skipitem(&format, p_va, flags); 1643 if (msg) { 1644 PyErr_Format(PyExc_RuntimeError, "%s: '%s'", msg, 1645 format); 1646 return cleanreturn(0, freelist); 1647 } 1648 } 1649 1650 if (!IS_END_OF_FORMAT(*format) && *format != '|') { 1651 PyErr_Format(PyExc_RuntimeError, 1652 "more argument specifiers than keyword list entries " 1653 "(remaining format:'%s')", format); 1654 return cleanreturn(0, freelist); 1655 } 1656 1657 /* make sure there are no extraneous keyword arguments */ 1658 if (nkeywords > 0) { 1659 PyObject *key, *value; 1660 Py_ssize_t pos = 0; 1661 while (PyDict_Next(keywords, &pos, &key, &value)) { 1662 int match = 0; 1663 char *ks; 1664 if (!PyString_Check(key)) { 1665 PyErr_SetString(PyExc_TypeError, 1666 "keywords must be strings"); 1667 return cleanreturn(0, freelist); 1668 } 1669 ks = PyString_AsString(key); 1670 for (i = 0; i < len; i++) { 1671 if (!strcmp(ks, kwlist[i])) { 1672 match = 1; 1673 break; 1674 } 1675 } 1676 if (!match) { 1677 PyErr_Format(PyExc_TypeError, 1678 "'%s' is an invalid keyword " 1679 "argument for this function", 1680 ks); 1681 return cleanreturn(0, freelist); 1682 } 1683 } 1684 } 1685 1686 return cleanreturn(1, freelist); 1641 1687 } 1642 1688 … … 1645 1691 skipitem(const char **p_format, va_list *p_va, int flags) 1646 1692 { 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1693 const char *format = *p_format; 1694 char c = *format++; 1695 1696 switch (c) { 1697 1698 /* simple codes 1699 * The individual types (second arg of va_arg) are irrelevant */ 1700 1701 case 'b': /* byte -- very short int */ 1702 case 'B': /* byte as bitfield */ 1703 case 'h': /* short int */ 1704 case 'H': /* short int as bitfield */ 1705 case 'i': /* int */ 1706 case 'I': /* int sized bitfield */ 1707 case 'l': /* long int */ 1708 case 'k': /* long int sized bitfield */ 1663 1709 #ifdef HAVE_LONG_LONG 1664 1665 1666 #endif 1667 1668 1710 case 'L': /* PY_LONG_LONG */ 1711 case 'K': /* PY_LONG_LONG sized bitfield */ 1712 #endif 1713 case 'f': /* float */ 1714 case 'd': /* double */ 1669 1715 #ifndef WITHOUT_COMPLEX 1670 1671 #endif 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1716 case 'D': /* complex double */ 1717 #endif 1718 case 'c': /* char */ 1719 { 1720 (void) va_arg(*p_va, void *); 1721 break; 1722 } 1723 1724 case 'n': /* Py_ssize_t */ 1725 { 1726 (void) va_arg(*p_va, Py_ssize_t *); 1727 break; 1728 } 1729 1730 /* string codes */ 1731 1732 case 'e': /* string with encoding */ 1733 { 1734 (void) va_arg(*p_va, const char *); 1735 if (!(*format == 's' || *format == 't')) 1736 /* after 'e', only 's' and 't' is allowed */ 1737 goto err; 1738 format++; 1739 /* explicit fallthrough to string cases */ 1740 } 1741 1742 case 's': /* string */ 1743 case 'z': /* string or None */ 1698 1744 #ifdef Py_USING_UNICODE 1699 1700 #endif 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1745 case 'u': /* unicode string */ 1746 #endif 1747 case 't': /* buffer, read-only */ 1748 case 'w': /* buffer, read-write */ 1749 { 1750 (void) va_arg(*p_va, char **); 1751 if (*format == '#') { 1752 if (flags & FLAG_SIZE_T) 1753 (void) va_arg(*p_va, Py_ssize_t *); 1754 else 1755 (void) va_arg(*p_va, int *); 1756 format++; 1757 } else if ((c == 's' || c == 'z') && *format == '*') { 1758 format++; 1759 } 1760 break; 1761 } 1762 1763 /* object codes */ 1764 1765 case 'S': /* string object */ 1720 1766 #ifdef Py_USING_UNICODE 1721 case 'U': /* unicode string object */ 1722 #endif 1723 { 1724 (void) va_arg(*p_va, PyObject **); 1725 break; 1726 } 1727 1728 case 'O': /* object */ 1729 { 1730 if (*format == '!') { 1731 format++; 1732 (void) va_arg(*p_va, PyTypeObject*); 1733 (void) va_arg(*p_va, PyObject **); 1734 } 1735 #if 0 1736 /* I don't know what this is for */ 1737 else if (*format == '?') { 1738 inquiry pred = va_arg(*p_va, inquiry); 1739 format++; 1740 if ((*pred)(arg)) { 1741 (void) va_arg(*p_va, PyObject **); 1742 } 1743 } 1744 #endif 1745 else if (*format == '&') { 1746 typedef int (*converter)(PyObject *, void *); 1747 (void) va_arg(*p_va, converter); 1748 (void) va_arg(*p_va, void *); 1749 format++; 1750 } 1751 else { 1752 (void) va_arg(*p_va, PyObject **); 1753 } 1754 break; 1755 } 1756 1757 case '(': /* bypass tuple, not handled at all previously */ 1758 { 1759 char *msg; 1760 for (;;) { 1761 if (*format==')') 1762 break; 1763 if (IS_END_OF_FORMAT(*format)) 1764 return "Unmatched left paren in format " 1765 "string"; 1766 msg = skipitem(&format, p_va, flags); 1767 if (msg) 1768 return msg; 1769 } 1770 format++; 1771 break; 1772 } 1773 1774 case ')': 1775 return "Unmatched right paren in format string"; 1776 1777 default: 1767 case 'U': /* unicode string object */ 1768 #endif 1769 { 1770 (void) va_arg(*p_va, PyObject **); 1771 break; 1772 } 1773 1774 case 'O': /* object */ 1775 { 1776 if (*format == '!') { 1777 format++; 1778 (void) va_arg(*p_va, PyTypeObject*); 1779 (void) va_arg(*p_va, PyObject **); 1780 } 1781 else if (*format == '&') { 1782 typedef int (*converter)(PyObject *, void *); 1783 (void) va_arg(*p_va, converter); 1784 (void) va_arg(*p_va, void *); 1785 format++; 1786 } 1787 else { 1788 (void) va_arg(*p_va, PyObject **); 1789 } 1790 break; 1791 } 1792 1793 case '(': /* bypass tuple, not handled at all previously */ 1794 { 1795 char *msg; 1796 for (;;) { 1797 if (*format==')') 1798 break; 1799 if (IS_END_OF_FORMAT(*format)) 1800 return "Unmatched left paren in format " 1801 "string"; 1802 msg = skipitem(&format, p_va, flags); 1803 if (msg) 1804 return msg; 1805 } 1806 format++; 1807 break; 1808 } 1809 1810 case ')': 1811 return "Unmatched right paren in format string"; 1812 1813 default: 1778 1814 err: 1779 1780 1781 1782 1783 1784 1815 return "impossible<bad format char>"; 1816 1817 } 1818 1819 *p_format = format; 1820 return NULL; 1785 1821 } 1786 1822 … … 1789 1825 PyArg_UnpackTuple(PyObject *args, const char *name, Py_ssize_t min, Py_ssize_t max, ...) 1790 1826 { 1791 1792 1793 1827 Py_ssize_t i, l; 1828 PyObject **o; 1829 va_list vargs; 1794 1830 1795 1831 #ifdef HAVE_STDARG_PROTOTYPES 1796 1832 va_start(vargs, max); 1797 1833 #else 1798 va_start(vargs); 1799 #endif 1800 1801 assert(min >= 0); 1802 assert(min <= max); 1803 if (!PyTuple_Check(args)) { 1804 PyErr_SetString(PyExc_SystemError, 1805 "PyArg_UnpackTuple() argument list is not a tuple"); 1806 return 0; 1807 } 1808 l = PyTuple_GET_SIZE(args); 1809 if (l < min) { 1810 if (name != NULL) 1811 PyErr_Format( 1812 PyExc_TypeError, 1813 "%s expected %s%zd arguments, got %zd", 1814 name, (min == max ? "" : "at least "), min, l); 1815 else 1816 PyErr_Format( 1817 PyExc_TypeError, 1818 "unpacked tuple should have %s%zd elements," 1819 " but has %zd", 1820 (min == max ? "" : "at least "), min, l); 1821 va_end(vargs); 1822 return 0; 1823 } 1824 if (l > max) { 1825 if (name != NULL) 1826 PyErr_Format( 1827 PyExc_TypeError, 1828 "%s expected %s%zd arguments, got %zd", 1829 name, (min == max ? "" : "at most "), max, l); 1830 else 1831 PyErr_Format( 1832 PyExc_TypeError, 1833 "unpacked tuple should have %s%zd elements," 1834 " but has %zd", 1835 (min == max ? "" : "at most "), max, l); 1836 va_end(vargs); 1837 return 0; 1838 } 1839 for (i = 0; i < l; i++) { 1840 o = va_arg(vargs, PyObject **); 1841 *o = PyTuple_GET_ITEM(args, i); 1842 } 1843 va_end(vargs); 1844 return 1; 1834 va_start(vargs); 1835 #endif 1836 1837 assert(min >= 0); 1838 assert(min <= max); 1839 if (!PyTuple_Check(args)) { 1840 va_end(vargs); 1841 PyErr_SetString(PyExc_SystemError, 1842 "PyArg_UnpackTuple() argument list is not a tuple"); 1843 return 0; 1844 } 1845 l = PyTuple_GET_SIZE(args); 1846 if (l < min) { 1847 if (name != NULL) 1848 PyErr_Format( 1849 PyExc_TypeError, 1850 "%s expected %s%zd arguments, got %zd", 1851 name, (min == max ? "" : "at least "), min, l); 1852 else 1853 PyErr_Format( 1854 PyExc_TypeError, 1855 "unpacked tuple should have %s%zd elements," 1856 " but has %zd", 1857 (min == max ? "" : "at least "), min, l); 1858 va_end(vargs); 1859 return 0; 1860 } 1861 if (l > max) { 1862 if (name != NULL) 1863 PyErr_Format( 1864 PyExc_TypeError, 1865 "%s expected %s%zd arguments, got %zd", 1866 name, (min == max ? "" : "at most "), max, l); 1867 else 1868 PyErr_Format( 1869 PyExc_TypeError, 1870 "unpacked tuple should have %s%zd elements," 1871 " but has %zd", 1872 (min == max ? "" : "at most "), max, l); 1873 va_end(vargs); 1874 return 0; 1875 } 1876 for (i = 0; i < l; i++) { 1877 o = va_arg(vargs, PyObject **); 1878 *o = PyTuple_GET_ITEM(args, i); 1879 } 1880 va_end(vargs); 1881 return 1; 1845 1882 } 1846 1883 … … 1848 1885 /* For type constructors that don't take keyword args 1849 1886 * 1850 * Sets a TypeError and returns 0 if the kwds dict is 1887 * Sets a TypeError and returns 0 if the kwds dict is 1851 1888 * not empty, returns 1 otherwise 1852 1889 */ … … 1854 1891 _PyArg_NoKeywords(const char *funcname, PyObject *kw) 1855 1892 { 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 PyErr_Format(PyExc_TypeError, "%s does not take keyword arguments", 1866 1867 1893 if (kw == NULL) 1894 return 1; 1895 if (!PyDict_CheckExact(kw)) { 1896 PyErr_BadInternalCall(); 1897 return 0; 1898 } 1899 if (PyDict_Size(kw) == 0) 1900 return 1; 1901 1902 PyErr_Format(PyExc_TypeError, "%s does not take keyword arguments", 1903 funcname); 1904 return 0; 1868 1905 } 1869 1906 #ifdef __cplusplus
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