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Fixup nptl/ChangeLog for last commit.
[glibc.git] / stdio-common / vfscanf.c
blob43f25caa6fdf7648d878621ac67210d875ab1b2e
1 /* Copyright (C) 1991-2012 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #include <assert.h>
19 #include <errno.h>
20 #include <limits.h>
21 #include <ctype.h>
22 #include <stdarg.h>
23 #include <stdbool.h>
24 #include <stdio.h>
25 #include <stdint.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <wchar.h>
29 #include <wctype.h>
30 #include <bits/libc-lock.h>
31 #include <locale/localeinfo.h>
32
33 #ifdef __GNUC__
34 # define HAVE_LONGLONG
35 # define LONGLONG long long
36 #else
37 # define LONGLONG long
38 #endif
39
40 /* Determine whether we have to handle `long long' at all. */
41 #if LONG_MAX == LONG_LONG_MAX
42 # define need_longlong 0
43 #else
44 # define need_longlong 1
45 #endif
46
47 /* Determine whether we have to handle `long'. */
48 #if INT_MAX == LONG_MAX
49 # define need_long 0
50 #else
51 # define need_long 1
52 #endif
53
54 /* Those are flags in the conversion format. */
55 #define LONG 0x0001 /* l: long or double */
56 #define LONGDBL 0x0002 /* L: long long or long double */
57 #define SHORT 0x0004 /* h: short */
58 #define SUPPRESS 0x0008 /* *: suppress assignment */
59 #define POINTER 0x0010 /* weird %p pointer (`fake hex') */
60 #define NOSKIP 0x0020 /* do not skip blanks */
61 #define NUMBER_SIGNED 0x0040 /* signed integer */
62 #define GROUP 0x0080 /* ': group numbers */
63 #define GNU_MALLOC 0x0100 /* a: malloc strings */
64 #define CHAR 0x0200 /* hh: char */
65 #define I18N 0x0400 /* I: use locale's digits */
66 #define HEXA_FLOAT 0x0800 /* hexadecimal float */
67 #define READ_POINTER 0x1000 /* this is a pointer value */
68 #define POSIX_MALLOC 0x2000 /* m: malloc strings */
69 #define MALLOC (GNU_MALLOC | POSIX_MALLOC)
70
71 #include <locale/localeinfo.h>
72 #include <libioP.h>
73 #include <libio.h>
74
75 #undef va_list
76 #define va_list _IO_va_list
77
78 #ifdef COMPILE_WSCANF
79 # define ungetc(c, s) ((void) (c == WEOF \
80 || (--read_in, \
81 _IO_sputbackwc (s, c))))
82 # define ungetc_not_eof(c, s) ((void) (--read_in, \
83 _IO_sputbackwc (s, c)))
84 # define inchar() (c == WEOF ? ((errno = inchar_errno), WEOF) \
85 : ((c = _IO_getwc_unlocked (s)), \
86 (void) (c != WEOF \
87 ? ++read_in \
88 : (size_t) (inchar_errno = errno)), c))
89
90 # define MEMCPY(d, s, n) __wmemcpy (d, s, n)
91 # define ISSPACE(Ch) iswspace (Ch)
92 # define ISDIGIT(Ch) iswdigit (Ch)
93 # define ISXDIGIT(Ch) iswxdigit (Ch)
94 # define TOLOWER(Ch) towlower (Ch)
95 # define ORIENT if (_IO_fwide (s, 1) != 1) return WEOF
96 # define __strtoll_internal __wcstoll_internal
97 # define __strtoull_internal __wcstoull_internal
98 # define __strtol_internal __wcstol_internal
99 # define __strtoul_internal __wcstoul_internal
100 # define __strtold_internal __wcstold_internal
101 # define __strtod_internal __wcstod_internal
102 # define __strtof_internal __wcstof_internal
103
104 # define L_(Str) L##Str
105 # define CHAR_T wchar_t
106 # define UCHAR_T unsigned int
107 # define WINT_T wint_t
108 # undef EOF
109 # define EOF WEOF
110 #else
111 # define ungetc(c, s) ((void) ((int) c == EOF \
112 || (--read_in, \
113 _IO_sputbackc (s, (unsigned char) c))))
114 # define ungetc_not_eof(c, s) ((void) (--read_in, \
115 _IO_sputbackc (s, (unsigned char) c)))
116 # define inchar() (c == EOF ? ((errno = inchar_errno), EOF) \
117 : ((c = _IO_getc_unlocked (s)), \
118 (void) (c != EOF \
119 ? ++read_in \
120 : (size_t) (inchar_errno = errno)), c))
121 # define MEMCPY(d, s, n) memcpy (d, s, n)
122 # define ISSPACE(Ch) __isspace_l (Ch, loc)
123 # define ISDIGIT(Ch) __isdigit_l (Ch, loc)
124 # define ISXDIGIT(Ch) __isxdigit_l (Ch, loc)
125 # define TOLOWER(Ch) __tolower_l ((unsigned char) (Ch), loc)
126 # define ORIENT if (_IO_vtable_offset (s) == 0 \
127 && _IO_fwide (s, -1) != -1) \
128 return EOF
129
130 # define L_(Str) Str
131 # define CHAR_T char
132 # define UCHAR_T unsigned char
133 # define WINT_T int
134 #endif
135
136 #define encode_error() do { \
137 errval = 4; \
138 __set_errno (EILSEQ); \
139 goto errout; \
140 } while (0)
141 #define conv_error() do { \
142 errval = 2; \
143 goto errout; \
144 } while (0)
145 #define input_error() do { \
146 errval = 1; \
147 if (done == 0) done = EOF; \
148 goto errout; \
149 } while (0)
150 #define add_ptr_to_free(ptr) \
151 do \
152 { \
153 if (ptrs_to_free == NULL \
154 || ptrs_to_free->count == (sizeof (ptrs_to_free->ptrs) \
155 / sizeof (ptrs_to_free->ptrs[0]))) \
156 { \
157 struct ptrs_to_free *new_ptrs = alloca (sizeof (*ptrs_to_free)); \
158 new_ptrs->count = 0; \
159 new_ptrs->next = ptrs_to_free; \
160 ptrs_to_free = new_ptrs; \
161 } \
162 ptrs_to_free->ptrs[ptrs_to_free->count++] = (ptr); \
163 } \
164 while (0)
165 #define ARGCHECK(s, format) \
166 do \
167 { \
168 /* Check file argument for consistence. */ \
169 CHECK_FILE (s, EOF); \
170 if (s->_flags & _IO_NO_READS) \
171 { \
172 __set_errno (EBADF); \
173 return EOF; \
174 } \
175 else if (format == NULL) \
176 { \
177 MAYBE_SET_EINVAL; \
178 return EOF; \
179 } \
180 } while (0)
181 #define LOCK_STREAM(S) \
182 __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, (S)); \
183 _IO_flockfile (S)
184 #define UNLOCK_STREAM(S) \
185 _IO_funlockfile (S); \
186 __libc_cleanup_region_end (0)
187
188 struct ptrs_to_free
189 {
190 size_t count;
191 struct ptrs_to_free *next;
192 char **ptrs[32];
193 };
194
195 /* Read formatted input from S according to the format string
196 FORMAT, using the argument list in ARG.
197 Return the number of assignments made, or -1 for an input error. */
198 #ifdef COMPILE_WSCANF
199 int
200 _IO_vfwscanf (_IO_FILE *s, const wchar_t *format, _IO_va_list argptr,
201 int *errp)
202 #else
203 int
204 _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr,
205 int *errp)
206 #endif
207 {
208 va_list arg;
209 register const CHAR_T *f = format;
210 register UCHAR_T fc; /* Current character of the format. */
211 register WINT_T done = 0; /* Assignments done. */
212 register size_t read_in = 0; /* Chars read in. */
213 register WINT_T c = 0; /* Last char read. */
214 register int width; /* Maximum field width. */
215 register int flags; /* Modifiers for current format element. */
216 int errval = 0;
217 #ifndef COMPILE_WSCANF
218 __locale_t loc = _NL_CURRENT_LOCALE;
219 struct __locale_data *const curctype = loc->__locales[LC_CTYPE];
220 #endif
221
222 /* Errno of last failed inchar call. */
223 int inchar_errno = 0;
224 /* Status for reading F-P nums. */
225 char got_dot, got_e, negative;
226 /* If a [...] is a [^...]. */
227 CHAR_T not_in;
228 #define exp_char not_in
229 /* Base for integral numbers. */
230 int base;
231 /* Decimal point character. */
232 #ifdef COMPILE_WSCANF
233 wint_t decimal;
234 #else
235 const char *decimal;
236 #endif
237 /* The thousands character of the current locale. */
238 #ifdef COMPILE_WSCANF
239 wint_t thousands;
240 #else
241 const char *thousands;
242 #endif
243 struct ptrs_to_free *ptrs_to_free = NULL;
244 /* State for the conversions. */
245 mbstate_t state;
246 /* Integral holding variables. */
247 union
248 {
249 long long int q;
250 unsigned long long int uq;
251 long int l;
252 unsigned long int ul;
253 } num;
254 /* Character-buffer pointer. */
255 char *str = NULL;
256 wchar_t *wstr = NULL;
257 char **strptr = NULL;
258 ssize_t strsize = 0;
259 /* We must not react on white spaces immediately because they can
260 possibly be matched even if in the input stream no character is
261 available anymore. */
262 int skip_space = 0;
263 /* Workspace. */
264 CHAR_T *tw; /* Temporary pointer. */
265 CHAR_T *wp = NULL; /* Workspace. */
266 size_t wpmax = 0; /* Maximal size of workspace. */
267 size_t wpsize; /* Currently used bytes in workspace. */
268 bool use_malloc = false;
269 #define ADDW(Ch) \
270 do \
271 { \
272 if (__builtin_expect (wpsize == wpmax, 0)) \
273 { \
274 CHAR_T *old = wp; \
275 size_t newsize = (UCHAR_MAX + 1 > 2 * wpmax \
276 ? UCHAR_MAX + 1 : 2 * wpmax); \
277 if (use_malloc || !__libc_use_alloca (newsize)) \
278 { \
279 wp = realloc (use_malloc ? wp : NULL, newsize); \
280 if (wp == NULL) \
281 { \
282 if (use_malloc) \
283 free (old); \
284 done = EOF; \
285 goto errout; \
286 } \
287 if (! use_malloc) \
288 MEMCPY (wp, old, wpsize); \
289 wpmax = newsize; \
290 use_malloc = true; \
291 } \
292 else \
293 { \
294 size_t s = wpmax * sizeof (CHAR_T); \
295 wp = (CHAR_T *) extend_alloca (wp, s, \
296 newsize * sizeof (CHAR_T)); \
297 wpmax = s / sizeof (CHAR_T); \
298 if (old != NULL) \
299 MEMCPY (wp, old, wpsize); \
300 } \
301 } \
302 wp[wpsize++] = (Ch); \
303 } \
304 while (0)
305
306 #ifdef __va_copy
307 __va_copy (arg, argptr);
308 #else
309 arg = (va_list) argptr;
310 #endif
311
312 #ifdef ORIENT
313 ORIENT;
314 #endif
315
316 ARGCHECK (s, format);
317
318 {
319 #ifndef COMPILE_WSCANF
320 struct __locale_data *const curnumeric = loc->__locales[LC_NUMERIC];
321 #endif
322
323 /* Figure out the decimal point character. */
324 #ifdef COMPILE_WSCANF
325 decimal = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_DECIMAL_POINT_WC);
326 #else
327 decimal = curnumeric->values[_NL_ITEM_INDEX (DECIMAL_POINT)].string;
328 #endif
329 /* Figure out the thousands separator character. */
330 #ifdef COMPILE_WSCANF
331 thousands = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_THOUSANDS_SEP_WC);
332 #else
333 thousands = curnumeric->values[_NL_ITEM_INDEX (THOUSANDS_SEP)].string;
334 if (*thousands == '\0')
335 thousands = NULL;
336 #endif
337 }
338
339 /* Lock the stream. */
340 LOCK_STREAM (s);
341
342
343 #ifndef COMPILE_WSCANF
344 /* From now on we use `state' to convert the format string. */
345 memset (&state, '\0', sizeof (state));
346 #endif
347
348 /* Run through the format string. */
349 while (*f != '\0')
350 {
351 unsigned int argpos;
352 /* Extract the next argument, which is of type TYPE.
353 For a %N$... spec, this is the Nth argument from the beginning;
354 otherwise it is the next argument after the state now in ARG. */
355 #ifdef __va_copy
356 # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \
357 ({ unsigned int pos = argpos; \
358 va_list arg; \
359 __va_copy (arg, argptr); \
360 while (--pos > 0) \
361 (void) va_arg (arg, void *); \
362 va_arg (arg, type); \
363 }))
364 #else
365 # if 0
366 /* XXX Possible optimization. */
367 # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \
368 ({ va_list arg = (va_list) argptr; \
369 arg = (va_list) ((char *) arg \
370 + (argpos - 1) \
371 * __va_rounded_size (void *)); \
372 va_arg (arg, type); \
373 }))
374 # else
375 # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \
376 ({ unsigned int pos = argpos; \
377 va_list arg = (va_list) argptr; \
378 while (--pos > 0) \
379 (void) va_arg (arg, void *); \
380 va_arg (arg, type); \
381 }))
382 # endif
383 #endif
384
385 #ifndef COMPILE_WSCANF
386 if (!isascii ((unsigned char) *f))
387 {
388 /* Non-ASCII, may be a multibyte. */
389 int len = __mbrlen (f, strlen (f), &state);
390 if (len > 0)
391 {
392 do
393 {
394 c = inchar ();
395 if (__builtin_expect (c == EOF, 0))
396 input_error ();
397 else if (c != (unsigned char) *f++)
398 {
399 ungetc_not_eof (c, s);
400 conv_error ();
401 }
402 }
403 while (--len > 0);
404 continue;
405 }
406 }
407 #endif
408
409 fc = *f++;
410 if (fc != '%')
411 {
412 /* Remember to skip spaces. */
413 if (ISSPACE (fc))
414 {
415 skip_space = 1;
416 continue;
417 }
418
419 /* Read a character. */
420 c = inchar ();
421
422 /* Characters other than format specs must just match. */
423 if (__builtin_expect (c == EOF, 0))
424 input_error ();
425
426 /* We saw white space char as the last character in the format
427 string. Now it's time to skip all leading white space. */
428 if (skip_space)
429 {
430 while (ISSPACE (c))
431 if (__builtin_expect (inchar () == EOF, 0))
432 input_error ();
433 skip_space = 0;
434 }
435
436 if (__builtin_expect (c != fc, 0))
437 {
438 ungetc (c, s);
439 conv_error ();
440 }
441
442 continue;
443 }
444
445 /* This is the start of the conversion string. */
446 flags = 0;
447
448 /* Initialize state of modifiers. */
449 argpos = 0;
450
451 /* Prepare temporary buffer. */
452 wpsize = 0;
453
454 /* Check for a positional parameter specification. */
455 if (ISDIGIT ((UCHAR_T) *f))
456 {
457 argpos = (UCHAR_T) *f++ - L_('0');
458 while (ISDIGIT ((UCHAR_T) *f))
459 argpos = argpos * 10 + ((UCHAR_T) *f++ - L_('0'));
460 if (*f == L_('$'))
461 ++f;
462 else
463 {
464 /* Oops; that was actually the field width. */
465 width = argpos;
466 argpos = 0;
467 goto got_width;
468 }
469 }
470
471 /* Check for the assignment-suppressing, the number grouping flag,
472 and the signal to use the locale's digit representation. */
473 while (*f == L_('*') || *f == L_('\'') || *f == L_('I'))
474 switch (*f++)
475 {
476 case L_('*'):
477 flags |= SUPPRESS;
478 break;
479 case L_('\''):
480 #ifdef COMPILE_WSCANF
481 if (thousands != L'\0')
482 #else
483 if (thousands != NULL)
484 #endif
485 flags |= GROUP;
486 break;
487 case L_('I'):
488 flags |= I18N;
489 break;
490 }
491
492 /* Find the maximum field width. */
493 width = 0;
494 while (ISDIGIT ((UCHAR_T) *f))
495 {
496 width *= 10;
497 width += (UCHAR_T) *f++ - L_('0');
498 }
499 got_width:
500 if (width == 0)
501 width = -1;
502
503 /* Check for type modifiers. */
504 switch (*f++)
505 {
506 case L_('h'):
507 /* ints are short ints or chars. */
508 if (*f == L_('h'))
509 {
510 ++f;
511 flags |= CHAR;
512 }
513 else
514 flags |= SHORT;
515 break;
516 case L_('l'):
517 if (*f == L_('l'))
518 {
519 /* A double `l' is equivalent to an `L'. */
520 ++f;
521 flags |= LONGDBL | LONG;
522 }
523 else
524 /* ints are long ints. */
525 flags |= LONG;
526 break;
527 case L_('q'):
528 case L_('L'):
529 /* doubles are long doubles, and ints are long long ints. */
530 flags |= LONGDBL | LONG;
531 break;
532 case L_('a'):
533 /* The `a' is used as a flag only if followed by `s', `S' or
534 `['. */
535 if (*f != L_('s') && *f != L_('S') && *f != L_('['))
536 {
537 --f;
538 break;
539 }
540 /* In __isoc99_*scanf %as, %aS and %a[ extension is not
541 supported at all. */
542 if (s->_flags2 & _IO_FLAGS2_SCANF_STD)
543 {
544 --f;
545 break;
546 }
547 /* String conversions (%s, %[) take a `char **'
548 arg and fill it in with a malloc'd pointer. */
549 flags |= GNU_MALLOC;
550 break;
551 case L_('m'):
552 flags |= POSIX_MALLOC;
553 if (*f == L_('l'))
554 {
555 ++f;
556 flags |= LONG;
557 }
558 break;
559 case L_('z'):
560 if (need_longlong && sizeof (size_t) > sizeof (unsigned long int))
561 flags |= LONGDBL;
562 else if (sizeof (size_t) > sizeof (unsigned int))
563 flags |= LONG;
564 break;
565 case L_('j'):
566 if (need_longlong && sizeof (uintmax_t) > sizeof (unsigned long int))
567 flags |= LONGDBL;
568 else if (sizeof (uintmax_t) > sizeof (unsigned int))
569 flags |= LONG;
570 break;
571 case L_('t'):
572 if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int))
573 flags |= LONGDBL;
574 else if (sizeof (ptrdiff_t) > sizeof (int))
575 flags |= LONG;
576 break;
577 default:
578 /* Not a recognized modifier. Backup. */
579 --f;
580 break;
581 }
582
583 /* End of the format string? */
584 if (__builtin_expect (*f == L_('\0'), 0))
585 conv_error ();
586
587 /* Find the conversion specifier. */
588 fc = *f++;
589 if (skip_space || (fc != L_('[') && fc != L_('c')
590 && fc != L_('C') && fc != L_('n')))
591 {
592 /* Eat whitespace. */
593 int save_errno = errno;
594 __set_errno (0);
595 do
596 /* We add the additional test for EOF here since otherwise
597 inchar will restore the old errno value which might be
598 EINTR but does not indicate an interrupt since nothing
599 was read at this time. */
600 if (__builtin_expect ((c == EOF || inchar () == EOF)
601 && errno == EINTR, 0))
602 input_error ();
603 while (ISSPACE (c));
604 __set_errno (save_errno);
605 ungetc (c, s);
606 skip_space = 0;
607 }
608
609 switch (fc)
610 {
611 case L_('%'): /* Must match a literal '%'. */
612 c = inchar ();
613 if (__builtin_expect (c == EOF, 0))
614 input_error ();
615 if (__builtin_expect (c != fc, 0))
616 {
617 ungetc_not_eof (c, s);
618 conv_error ();
619 }
620 break;
621
622 case L_('n'): /* Answer number of assignments done. */
623 /* Corrigendum 1 to ISO C 1990 describes the allowed flags
624 with the 'n' conversion specifier. */
625 if (!(flags & SUPPRESS))
626 {
627 /* Don't count the read-ahead. */
628 if (need_longlong && (flags & LONGDBL))
629 *ARG (long long int *) = read_in;
630 else if (need_long && (flags & LONG))
631 *ARG (long int *) = read_in;
632 else if (flags & SHORT)
633 *ARG (short int *) = read_in;
634 else if (!(flags & CHAR))
635 *ARG (int *) = read_in;
636 else
637 *ARG (char *) = read_in;
638
639 #ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1
640 /* We have a severe problem here. The ISO C standard
641 contradicts itself in explaining the effect of the %n
642 format in `scanf'. While in ISO C:1990 and the ISO C
643 Amendement 1:1995 the result is described as
644
645 Execution of a %n directive does not effect the
646 assignment count returned at the completion of
647 execution of the f(w)scanf function.
648
649 in ISO C Corrigendum 1:1994 the following was added:
650
651 Subclause 7.9.6.2
652 Add the following fourth example:
653 In:
654 #include <stdio.h>
655 int d1, d2, n1, n2, i;
656 i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2);
657 the value 123 is assigned to d1 and the value3 to n1.
658 Because %n can never get an input failure the value
659 of 3 is also assigned to n2. The value of d2 is not
660 affected. The value 3 is assigned to i.
661
662 We go for now with the historically correct code from ISO C,
663 i.e., we don't count the %n assignments. When it ever
664 should proof to be wrong just remove the #ifdef above. */
665 ++done;
666 #endif
667 }
668 break;
669
670 case L_('c'): /* Match characters. */
671 if ((flags & LONG) == 0)
672 {
673 if (width == -1)
674 width = 1;
675
676 #define STRING_ARG(Str, Type, Width) \
677 do if (!(flags & SUPPRESS)) \
678 { \
679 if (flags & MALLOC) \
680 { \
681 /* The string is to be stored in a malloc'd buffer. */ \
682 /* For %mS using char ** is actually wrong, but \
683 shouldn't make a difference on any arch glibc \
684 supports and would unnecessarily complicate \
685 things. */ \
686 strptr = ARG (char **); \
687 if (strptr == NULL) \
688 conv_error (); \
689 /* Allocate an initial buffer. */ \
690 strsize = Width; \
691 *strptr = (char *) malloc (strsize * sizeof (Type)); \
692 Str = (Type *) *strptr; \
693 if (Str != NULL) \
694 add_ptr_to_free (strptr); \
695 else if (flags & POSIX_MALLOC) \
696 { \
697 done = EOF; \
698 goto errout; \
699 } \
700 } \
701 else \
702 Str = ARG (Type *); \
703 if (Str == NULL) \
704 conv_error (); \
705 } while (0)
706 #ifdef COMPILE_WSCANF
707 STRING_ARG (str, char, 100);
708 #else
709 STRING_ARG (str, char, (width > 1024 ? 1024 : width));
710 #endif
711
712 c = inchar ();
713 if (__builtin_expect (c == EOF, 0))
714 input_error ();
715
716 #ifdef COMPILE_WSCANF
717 /* We have to convert the wide character(s) into multibyte
718 characters and store the result. */
719 memset (&state, '\0', sizeof (state));
720
721 do
722 {
723 size_t n;
724
725 if (!(flags & SUPPRESS) && (flags & POSIX_MALLOC)
726 && str + MB_CUR_MAX >= *strptr + strsize)
727 {
728 /* We have to enlarge the buffer if the `m' flag
729 was given. */
730 size_t strleng = str - *strptr;
731 char *newstr;
732
733 newstr = (char *) realloc (*strptr, strsize * 2);
734 if (newstr == NULL)
735 {
736 /* Can't allocate that much. Last-ditch effort. */
737 newstr = (char *) realloc (*strptr,
738 strleng + MB_CUR_MAX);
739 if (newstr == NULL)
740 {
741 /* c can't have `a' flag, only `m'. */
742 done = EOF;
743 goto errout;
744 }
745 else
746 {
747 *strptr = newstr;
748 str = newstr + strleng;
749 strsize = strleng + MB_CUR_MAX;
750 }
751 }
752 else
753 {
754 *strptr = newstr;
755 str = newstr + strleng;
756 strsize *= 2;
757 }
758 }
759
760 n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state);
761 if (__builtin_expect (n == (size_t) -1, 0))
762 /* No valid wide character. */
763 input_error ();
764
765 /* Increment the output pointer. Even if we don't
766 write anything. */
767 str += n;
768 }
769 while (--width > 0 && inchar () != EOF);
770 #else
771 if (!(flags & SUPPRESS))
772 {
773 do
774 {
775 if ((flags & MALLOC)
776 && (char *) str == *strptr + strsize)
777 {
778 /* Enlarge the buffer. */
779 size_t newsize
780 = strsize
781 + (strsize >= width ? width - 1 : strsize);
782
783 str = (char *) realloc (*strptr, newsize);
784 if (str == NULL)
785 {
786 /* Can't allocate that much. Last-ditch
787 effort. */
788 str = (char *) realloc (*strptr, strsize + 1);
789 if (str == NULL)
790 {
791 /* c can't have `a' flag, only `m'. */
792 done = EOF;
793 goto errout;
794 }
795 else
796 {
797 *strptr = (char *) str;
798 str += strsize;
799 ++strsize;
800 }
801 }
802 else
803 {
804 *strptr = (char *) str;
805 str += strsize;
806 strsize = newsize;
807 }
808 }
809 *str++ = c;
810 }
811 while (--width > 0 && inchar () != EOF);
812 }
813 else
814 while (--width > 0 && inchar () != EOF);
815 #endif
816
817 if (!(flags & SUPPRESS))
818 {
819 if ((flags & MALLOC) && str - *strptr != strsize)
820 {
821 char *cp = (char *) realloc (*strptr, str - *strptr);
822 if (cp != NULL)
823 *strptr = cp;
824 }
825 strptr = NULL;
826 ++done;
827 }
828
829 break;
830 }
831 /* FALLTHROUGH */
832 case L_('C'):
833 if (width == -1)
834 width = 1;
835
836 STRING_ARG (wstr, wchar_t, (width > 1024 ? 1024 : width));
837
838 c = inchar ();
839 if (__builtin_expect (c == EOF, 0))
840 input_error ();
841
842 #ifdef COMPILE_WSCANF
843 /* Just store the incoming wide characters. */
844 if (!(flags & SUPPRESS))
845 {
846 do
847 {
848 if ((flags & MALLOC)
849 && wstr == (wchar_t *) *strptr + strsize)
850 {
851 size_t newsize
852 = strsize + (strsize > width ? width - 1 : strsize);
853 /* Enlarge the buffer. */
854 wstr = (wchar_t *) realloc (*strptr,
855 newsize * sizeof (wchar_t));
856 if (wstr == NULL)
857 {
858 /* Can't allocate that much. Last-ditch effort. */
859 wstr = (wchar_t *) realloc (*strptr,
860 (strsize + 1)
861 * sizeof (wchar_t));
862 if (wstr == NULL)
863 {
864 /* C or lc can't have `a' flag, only `m'
865 flag. */
866 done = EOF;
867 goto errout;
868 }
869 else
870 {
871 *strptr = (char *) wstr;
872 wstr += strsize;
873 ++strsize;
874 }
875 }
876 else
877 {
878 *strptr = (char *) wstr;
879 wstr += strsize;
880 strsize = newsize;
881 }
882 }
883 *wstr++ = c;
884 }
885 while (--width > 0 && inchar () != EOF);
886 }
887 else
888 while (--width > 0 && inchar () != EOF);
889 #else
890 {
891 /* We have to convert the multibyte input sequence to wide
892 characters. */
893 char buf[1];
894 mbstate_t cstate;
895
896 memset (&cstate, '\0', sizeof (cstate));
897
898 do
899 {
900 /* This is what we present the mbrtowc function first. */
901 buf[0] = c;
902
903 if (!(flags & SUPPRESS) && (flags & MALLOC)
904 && wstr == (wchar_t *) *strptr + strsize)
905 {
906 size_t newsize
907 = strsize + (strsize > width ? width - 1 : strsize);
908 /* Enlarge the buffer. */
909 wstr = (wchar_t *) realloc (*strptr,
910 newsize * sizeof (wchar_t));
911 if (wstr == NULL)
912 {
913 /* Can't allocate that much. Last-ditch effort. */
914 wstr = (wchar_t *) realloc (*strptr,
915 ((strsize + 1)
916 * sizeof (wchar_t)));
917 if (wstr == NULL)
918 {
919 /* C or lc can't have `a' flag, only `m' flag. */
920 done = EOF;
921 goto errout;
922 }
923 else
924 {
925 *strptr = (char *) wstr;
926 wstr += strsize;
927 ++strsize;
928 }
929 }
930 else
931 {
932 *strptr = (char *) wstr;
933 wstr += strsize;
934 strsize = newsize;
935 }
936 }
937
938 while (1)
939 {
940 size_t n;
941
942 n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL,
943 buf, 1, &cstate);
944
945 if (n == (size_t) -2)
946 {
947 /* Possibly correct character, just not enough
948 input. */
949 if (__builtin_expect (inchar () == EOF, 0))
950 encode_error ();
951
952 buf[0] = c;
953 continue;
954 }
955
956 if (__builtin_expect (n != 1, 0))
957 encode_error ();
958
959 /* We have a match. */
960 break;
961 }
962
963 /* Advance the result pointer. */
964 ++wstr;
965 }
966 while (--width > 0 && inchar () != EOF);
967 }
968 #endif
969
970 if (!(flags & SUPPRESS))
971 {
972 if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize)
973 {
974 wchar_t *cp = (wchar_t *) realloc (*strptr,
975 ((wstr
976 - (wchar_t *) *strptr)
977 * sizeof (wchar_t)));
978 if (cp != NULL)
979 *strptr = (char *) cp;
980 }
981 strptr = NULL;
982
983 ++done;
984 }
985
986 break;
987
988 case L_('s'): /* Read a string. */
989 if (!(flags & LONG))
990 {
991 STRING_ARG (str, char, 100);
992
993 c = inchar ();
994 if (__builtin_expect (c == EOF, 0))
995 input_error ();
996
997 #ifdef COMPILE_WSCANF
998 memset (&state, '\0', sizeof (state));
999 #endif
1000
1001 do
1002 {
1003 if (ISSPACE (c))
1004 {
1005 ungetc_not_eof (c, s);
1006 break;
1007 }
1008
1009 #ifdef COMPILE_WSCANF
1010 /* This is quite complicated. We have to convert the
1011 wide characters into multibyte characters and then
1012 store them. */
1013 {
1014 size_t n;
1015
1016 if (!(flags & SUPPRESS) && (flags & MALLOC)
1017 && str + MB_CUR_MAX >= *strptr + strsize)
1018 {
1019 /* We have to enlarge the buffer if the `a' or `m'
1020 flag was given. */
1021 size_t strleng = str - *strptr;
1022 char *newstr;
1023
1024 newstr = (char *) realloc (*strptr, strsize * 2);
1025 if (newstr == NULL)
1026 {
1027 /* Can't allocate that much. Last-ditch
1028 effort. */
1029 newstr = (char *) realloc (*strptr,
1030 strleng + MB_CUR_MAX);
1031 if (newstr == NULL)
1032 {
1033 if (flags & POSIX_MALLOC)
1034 {
1035 done = EOF;
1036 goto errout;
1037 }
1038 /* We lose. Oh well. Terminate the
1039 string and stop converting,
1040 so at least we don't skip any input. */
1041 ((char *) (*strptr))[strleng] = '\0';
1042 strptr = NULL;
1043 ++done;
1044 conv_error ();
1045 }
1046 else
1047 {
1048 *strptr = newstr;
1049 str = newstr + strleng;
1050 strsize = strleng + MB_CUR_MAX;
1051 }
1052 }
1053 else
1054 {
1055 *strptr = newstr;
1056 str = newstr + strleng;
1057 strsize *= 2;
1058 }
1059 }
1060
1061 n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c,
1062 &state);
1063 if (__builtin_expect (n == (size_t) -1, 0))
1064 encode_error ();
1065
1066 assert (n <= MB_CUR_MAX);
1067 str += n;
1068 }
1069 #else
1070 /* This is easy. */
1071 if (!(flags & SUPPRESS))
1072 {
1073 *str++ = c;
1074 if ((flags & MALLOC)
1075 && (char *) str == *strptr + strsize)
1076 {
1077 /* Enlarge the buffer. */
1078 str = (char *) realloc (*strptr, 2 * strsize);
1079 if (str == NULL)
1080 {
1081 /* Can't allocate that much. Last-ditch
1082 effort. */
1083 str = (char *) realloc (*strptr, strsize + 1);
1084 if (str == NULL)
1085 {
1086 if (flags & POSIX_MALLOC)
1087 {
1088 done = EOF;
1089 goto errout;
1090 }
1091 /* We lose. Oh well. Terminate the
1092 string and stop converting,
1093 so at least we don't skip any input. */
1094 ((char *) (*strptr))[strsize - 1] = '\0';
1095 strptr = NULL;
1096 ++done;
1097 conv_error ();
1098 }
1099 else
1100 {
1101 *strptr = (char *) str;
1102 str += strsize;
1103 ++strsize;
1104 }
1105 }
1106 else
1107 {
1108 *strptr = (char *) str;
1109 str += strsize;
1110 strsize *= 2;
1111 }
1112 }
1113 }
1114 #endif
1115 }
1116 while ((width <= 0 || --width > 0) && inchar () != EOF);
1117
1118 if (!(flags & SUPPRESS))
1119 {
1120 #ifdef COMPILE_WSCANF
1121 /* We have to emit the code to get into the initial
1122 state. */
1123 char buf[MB_LEN_MAX];
1124 size_t n = __wcrtomb (buf, L'\0', &state);
1125 if (n > 0 && (flags & MALLOC)
1126 && str + n >= *strptr + strsize)
1127 {
1128 /* Enlarge the buffer. */
1129 size_t strleng = str - *strptr;
1130 char *newstr;
1131
1132 newstr = (char *) realloc (*strptr, strleng + n + 1);
1133 if (newstr == NULL)
1134 {
1135 if (flags & POSIX_MALLOC)
1136 {
1137 done = EOF;
1138 goto errout;
1139 }
1140 /* We lose. Oh well. Terminate the string
1141 and stop converting, so at least we don't
1142 skip any input. */
1143 ((char *) (*strptr))[strleng] = '\0';
1144 strptr = NULL;
1145 ++done;
1146 conv_error ();
1147 }
1148 else
1149 {
1150 *strptr = newstr;
1151 str = newstr + strleng;
1152 strsize = strleng + n + 1;
1153 }
1154 }
1155
1156 str = __mempcpy (str, buf, n);
1157 #endif
1158 *str++ = '\0';
1159
1160 if ((flags & MALLOC) && str - *strptr != strsize)
1161 {
1162 char *cp = (char *) realloc (*strptr, str - *strptr);
1163 if (cp != NULL)
1164 *strptr = cp;
1165 }
1166 strptr = NULL;
1167
1168 ++done;
1169 }
1170 break;
1171 }
1172 /* FALLTHROUGH */
1173
1174 case L_('S'):
1175 {
1176 #ifndef COMPILE_WSCANF
1177 mbstate_t cstate;
1178 #endif
1179
1180 /* Wide character string. */
1181 STRING_ARG (wstr, wchar_t, 100);
1182
1183 c = inchar ();
1184 if (__builtin_expect (c == EOF, 0))
1185 input_error ();
1186
1187 #ifndef COMPILE_WSCANF
1188 memset (&cstate, '\0', sizeof (cstate));
1189 #endif
1190
1191 do
1192 {
1193 if (ISSPACE (c))
1194 {
1195 ungetc_not_eof (c, s);
1196 break;
1197 }
1198
1199 #ifdef COMPILE_WSCANF
1200 /* This is easy. */
1201 if (!(flags & SUPPRESS))
1202 {
1203 *wstr++ = c;
1204 if ((flags & MALLOC)
1205 && wstr == (wchar_t *) *strptr + strsize)
1206 {
1207 /* Enlarge the buffer. */
1208 wstr = (wchar_t *) realloc (*strptr,
1209 (2 * strsize)
1210 * sizeof (wchar_t));
1211 if (wstr == NULL)
1212 {
1213 /* Can't allocate that much. Last-ditch
1214 effort. */
1215 wstr = (wchar_t *) realloc (*strptr,
1216 (strsize + 1)
1217 * sizeof (wchar_t));
1218 if (wstr == NULL)
1219 {
1220 if (flags & POSIX_MALLOC)
1221 {
1222 done = EOF;
1223 goto errout;
1224 }
1225 /* We lose. Oh well. Terminate the string
1226 and stop converting, so at least we don't
1227 skip any input. */
1228 ((wchar_t *) (*strptr))[strsize - 1] = L'\0';
1229 strptr = NULL;
1230 ++done;
1231 conv_error ();
1232 }
1233 else
1234 {
1235 *strptr = (char *) wstr;
1236 wstr += strsize;
1237 ++strsize;
1238 }
1239 }
1240 else
1241 {
1242 *strptr = (char *) wstr;
1243 wstr += strsize;
1244 strsize *= 2;
1245 }
1246 }
1247 }
1248 #else
1249 {
1250 char buf[1];
1251
1252 buf[0] = c;
1253
1254 while (1)
1255 {
1256 size_t n;
1257
1258 n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL,
1259 buf, 1, &cstate);
1260
1261 if (n == (size_t) -2)
1262 {
1263 /* Possibly correct character, just not enough
1264 input. */
1265 if (__builtin_expect (inchar () == EOF, 0))
1266 encode_error ();
1267
1268 buf[0] = c;
1269 continue;
1270 }
1271
1272 if (__builtin_expect (n != 1, 0))
1273 encode_error ();
1274
1275 /* We have a match. */
1276 ++wstr;
1277 break;
1278 }
1279
1280 if (!(flags & SUPPRESS) && (flags & MALLOC)
1281 && wstr == (wchar_t *) *strptr + strsize)
1282 {
1283 /* Enlarge the buffer. */
1284 wstr = (wchar_t *) realloc (*strptr,
1285 (2 * strsize
1286 * sizeof (wchar_t)));
1287 if (wstr == NULL)
1288 {
1289 /* Can't allocate that much. Last-ditch effort. */
1290 wstr = (wchar_t *) realloc (*strptr,
1291 ((strsize + 1)
1292 * sizeof (wchar_t)));
1293 if (wstr == NULL)
1294 {
1295 if (flags & POSIX_MALLOC)
1296 {
1297 done = EOF;
1298 goto errout;
1299 }
1300 /* We lose. Oh well. Terminate the
1301 string and stop converting, so at
1302 least we don't skip any input. */
1303 ((wchar_t *) (*strptr))[strsize - 1] = L'\0';
1304 strptr = NULL;
1305 ++done;
1306 conv_error ();
1307 }
1308 else
1309 {
1310 *strptr = (char *) wstr;
1311 wstr += strsize;
1312 ++strsize;
1313 }
1314 }
1315 else
1316 {
1317 *strptr = (char *) wstr;
1318 wstr += strsize;
1319 strsize *= 2;
1320 }
1321 }
1322 }
1323 #endif
1324 }
1325 while ((width <= 0 || --width > 0) && inchar () != EOF);
1326
1327 if (!(flags & SUPPRESS))
1328 {
1329 *wstr++ = L'\0';
1330
1331 if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize)
1332 {
1333 wchar_t *cp = (wchar_t *) realloc (*strptr,
1334 ((wstr
1335 - (wchar_t *) *strptr)
1336 * sizeof(wchar_t)));
1337 if (cp != NULL)
1338 *strptr = (char *) cp;
1339 }
1340 strptr = NULL;
1341
1342 ++done;
1343 }
1344 }
1345 break;
1346
1347 case L_('x'): /* Hexadecimal integer. */
1348 case L_('X'): /* Ditto. */
1349 base = 16;
1350 goto number;
1351
1352 case L_('o'): /* Octal integer. */
1353 base = 8;
1354 goto number;
1355
1356 case L_('u'): /* Unsigned decimal integer. */
1357 base = 10;
1358 goto number;
1359
1360 case L_('d'): /* Signed decimal integer. */
1361 base = 10;
1362 flags |= NUMBER_SIGNED;
1363 goto number;
1364
1365 case L_('i'): /* Generic number. */
1366 base = 0;
1367 flags |= NUMBER_SIGNED;
1368
1369 number:
1370 c = inchar ();
1371 if (__builtin_expect (c == EOF, 0))
1372 input_error ();
1373
1374 /* Check for a sign. */
1375 if (c == L_('-') || c == L_('+'))
1376 {
1377 ADDW (c);
1378 if (width > 0)
1379 --width;
1380 c = inchar ();
1381 }
1382
1383 /* Look for a leading indication of base. */
1384 if (width != 0 && c == L_('0'))
1385 {
1386 if (width > 0)
1387 --width;
1388
1389 ADDW (c);
1390 c = inchar ();
1391
1392 if (width != 0 && TOLOWER (c) == L_('x'))
1393 {
1394 if (base == 0)
1395 base = 16;
1396 if (base == 16)
1397 {
1398 if (width > 0)
1399 --width;
1400 c = inchar ();
1401 }
1402 }
1403 else if (base == 0)
1404 base = 8;
1405 }
1406
1407 if (base == 0)
1408 base = 10;
1409
1410 if (base == 10 && __builtin_expect ((flags & I18N) != 0, 0))
1411 {
1412 int from_level;
1413 int to_level;
1414 int level;
1415 #ifdef COMPILE_WSCANF
1416 const wchar_t *wcdigits[10];
1417 const wchar_t *wcdigits_extended[10];
1418 #else
1419 const char *mbdigits[10];
1420 const char *mbdigits_extended[10];
1421 #endif
1422 /* "to_inpunct" is a map from ASCII digits to their
1423 equivalent in locale. This is defined for locales
1424 which use an extra digits set. */
1425 wctrans_t map = __wctrans ("to_inpunct");
1426 int n;
1427
1428 from_level = 0;
1429 #ifdef COMPILE_WSCANF
1430 to_level = _NL_CURRENT_WORD (LC_CTYPE,
1431 _NL_CTYPE_INDIGITS_WC_LEN) - 1;
1432 #else
1433 to_level = (uint32_t) curctype->values[_NL_ITEM_INDEX (_NL_CTYPE_INDIGITS_MB_LEN)].word - 1;
1434 #endif
1435
1436 /* Get the alternative digit forms if there are any. */
1437 if (__builtin_expect (map != NULL, 0))
1438 {
1439 /* Adding new level for extra digits set in locale file. */
1440 ++to_level;
1441
1442 for (n = 0; n < 10; ++n)
1443 {
1444 #ifdef COMPILE_WSCANF
1445 wcdigits[n] = (const wchar_t *)
1446 _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n);
1447
1448 wchar_t *wc_extended = (wchar_t *)
1449 alloca ((to_level + 2) * sizeof (wchar_t));
1450 __wmemcpy (wc_extended, wcdigits[n], to_level);
1451 wc_extended[to_level] = __towctrans (L'0' + n, map);
1452 wc_extended[to_level + 1] = '\0';
1453 wcdigits_extended[n] = wc_extended;
1454 #else
1455 mbdigits[n]
1456 = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string;
1457
1458 /* Get the equivalent wide char in map. */
1459 wint_t extra_wcdigit = __towctrans (L'0' + n, map);
1460
1461 /* Convert it to multibyte representation. */
1462 mbstate_t state;
1463 memset (&state, '\0', sizeof (state));
1464
1465 char extra_mbdigit[MB_LEN_MAX];
1466 size_t mblen
1467 = __wcrtomb (extra_mbdigit, extra_wcdigit, &state);
1468
1469 if (mblen == (size_t) -1)
1470 {
1471 /* Ignore this new level. */
1472 map = NULL;
1473 break;
1474 }
1475
1476 /* Calculate the length of mbdigits[n]. */
1477 const char *last_char = mbdigits[n];
1478 for (level = 0; level < to_level; ++level)
1479 last_char = strchr (last_char, '\0') + 1;
1480
1481 size_t mbdigits_len = last_char - mbdigits[n];
1482
1483 /* Allocate memory for extended multibyte digit. */
1484 char *mb_extended;
1485 mb_extended = (char *) alloca (mbdigits_len + mblen + 1);
1486
1487 /* And get the mbdigits + extra_digit string. */
1488 *(char *) __mempcpy (__mempcpy (mb_extended, mbdigits[n],
1489 mbdigits_len),
1490 extra_mbdigit, mblen) = '\0';
1491 mbdigits_extended[n] = mb_extended;
1492 #endif
1493 }
1494 }
1495
1496 /* Read the number into workspace. */
1497 while (c != EOF && width != 0)
1498 {
1499 /* In this round we get the pointer to the digit strings
1500 and also perform the first round of comparisons. */
1501 for (n = 0; n < 10; ++n)
1502 {
1503 /* Get the string for the digits with value N. */
1504 #ifdef COMPILE_WSCANF
1505 if (__builtin_expect (map != NULL, 0))
1506 wcdigits[n] = wcdigits_extended[n];
1507 else
1508 wcdigits[n] = (const wchar_t *)
1509 _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n);
1510 wcdigits[n] += from_level;
1511
1512 if (c == (wint_t) *wcdigits[n])
1513 {
1514 to_level = from_level;
1515 break;
1516 }
1517
1518 /* Advance the pointer to the next string. */
1519 ++wcdigits[n];
1520 #else
1521 const char *cmpp;
1522 int avail = width > 0 ? width : INT_MAX;
1523
1524 if (__builtin_expect (map != NULL, 0))
1525 mbdigits[n] = mbdigits_extended[n];
1526 else
1527 mbdigits[n]
1528 = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string;
1529
1530 for (level = 0; level < from_level; level++)
1531 mbdigits[n] = strchr (mbdigits[n], '\0') + 1;
1532
1533 cmpp = mbdigits[n];
1534 while ((unsigned char) *cmpp == c && avail >= 0)
1535 {
1536 if (*++cmpp == '\0')
1537 break;
1538 else
1539 {
1540 if (avail == 0 || inchar () == EOF)
1541 break;
1542 --avail;
1543 }
1544 }
1545
1546 if (*cmpp == '\0')
1547 {
1548 if (width > 0)
1549 width = avail;
1550 to_level = from_level;
1551 break;
1552 }
1553
1554 /* We are pushing all read characters back. */
1555 if (cmpp > mbdigits[n])
1556 {
1557 ungetc (c, s);
1558 while (--cmpp > mbdigits[n])
1559 ungetc_not_eof ((unsigned char) *cmpp, s);
1560 c = (unsigned char) *cmpp;
1561 }
1562
1563 /* Advance the pointer to the next string. */
1564 mbdigits[n] = strchr (mbdigits[n], '\0') + 1;
1565 #endif
1566 }
1567
1568 if (n == 10)
1569 {
1570 /* Have not yet found the digit. */
1571 for (level = from_level + 1; level <= to_level; ++level)
1572 {
1573 /* Search all ten digits of this level. */
1574 for (n = 0; n < 10; ++n)
1575 {
1576 #ifdef COMPILE_WSCANF
1577 if (c == (wint_t) *wcdigits[n])
1578 break;
1579
1580 /* Advance the pointer to the next string. */
1581 ++wcdigits[n];
1582 #else
1583 const char *cmpp;
1584 int avail = width > 0 ? width : INT_MAX;
1585
1586 cmpp = mbdigits[n];
1587 while ((unsigned char) *cmpp == c && avail >= 0)
1588 {
1589 if (*++cmpp == '\0')
1590 break;
1591 else
1592 {
1593 if (avail == 0 || inchar () == EOF)
1594 break;
1595 --avail;
1596 }
1597 }
1598
1599 if (*cmpp == '\0')
1600 {
1601 if (width > 0)
1602 width = avail;
1603 break;
1604 }
1605
1606 /* We are pushing all read characters back. */
1607 if (cmpp > mbdigits[n])
1608 {
1609 ungetc (c, s);
1610 while (--cmpp > mbdigits[n])
1611 ungetc_not_eof ((unsigned char) *cmpp, s);
1612 c = (unsigned char) *cmpp;
1613 }
1614
1615 /* Advance the pointer to the next string. */
1616 mbdigits[n] = strchr (mbdigits[n], '\0') + 1;
1617 #endif
1618 }
1619
1620 if (n < 10)
1621 {
1622 /* Found it. */
1623 from_level = level;
1624 to_level = level;
1625 break;
1626 }
1627 }
1628 }
1629
1630 if (n < 10)
1631 c = L_('0') + n;
1632 else if (flags & GROUP)
1633 {
1634 /* Try matching against the thousands separator. */
1635 #ifdef COMPILE_WSCANF
1636 if (c != thousands)
1637 break;
1638 #else
1639 const char *cmpp = thousands;
1640 int avail = width > 0 ? width : INT_MAX;
1641
1642 while ((unsigned char) *cmpp == c && avail >= 0)
1643 {
1644 ADDW (c);
1645 if (*++cmpp == '\0')
1646 break;
1647 else
1648 {
1649 if (avail == 0 || inchar () == EOF)
1650 break;
1651 --avail;
1652 }
1653 }
1654
1655 if (*cmpp != '\0')
1656 {
1657 /* We are pushing all read characters back. */
1658 if (cmpp > thousands)
1659 {
1660 wpsize -= cmpp - thousands;
1661 ungetc (c, s);
1662 while (--cmpp > thousands)
1663 ungetc_not_eof ((unsigned char) *cmpp, s);
1664 c = (unsigned char) *cmpp;
1665 }
1666 break;
1667 }
1668
1669 if (width > 0)
1670 width = avail;
1671
1672 /* The last thousands character will be added back by
1673 the ADDW below. */
1674 --wpsize;
1675 #endif
1676 }
1677 else
1678 break;
1679
1680 ADDW (c);
1681 if (width > 0)
1682 --width;
1683
1684 c = inchar ();
1685 }
1686 }
1687 else
1688 /* Read the number into workspace. */
1689 while (c != EOF && width != 0)
1690 {
1691 if (base == 16)
1692 {
1693 if (!ISXDIGIT (c))
1694 break;
1695 }
1696 else if (!ISDIGIT (c) || (int) (c - L_('0')) >= base)
1697 {
1698 if (base == 10 && (flags & GROUP))
1699 {
1700 /* Try matching against the thousands separator. */
1701 #ifdef COMPILE_WSCANF
1702 if (c != thousands)
1703 break;
1704 #else
1705 const char *cmpp = thousands;
1706 int avail = width > 0 ? width : INT_MAX;
1707
1708 while ((unsigned char) *cmpp == c && avail >= 0)
1709 {
1710 ADDW (c);
1711 if (*++cmpp == '\0')
1712 break;
1713 else
1714 {
1715 if (avail == 0 || inchar () == EOF)
1716 break;
1717 --avail;
1718 }
1719 }
1720
1721 if (*cmpp != '\0')
1722 {
1723 /* We are pushing all read characters back. */
1724 if (cmpp > thousands)
1725 {
1726 wpsize -= cmpp - thousands;
1727 ungetc (c, s);
1728 while (--cmpp > thousands)
1729 ungetc_not_eof ((unsigned char) *cmpp, s);
1730 c = (unsigned char) *cmpp;
1731 }
1732 break;
1733 }
1734
1735 if (width > 0)
1736 width = avail;
1737
1738 /* The last thousands character will be added back by
1739 the ADDW below. */
1740 --wpsize;
1741 #endif
1742 }
1743 else
1744 break;
1745 }
1746 ADDW (c);
1747 if (width > 0)
1748 --width;
1749
1750 c = inchar ();
1751 }
1752
1753 if (wpsize == 0
1754 || (wpsize == 1 && (wp[0] == L_('+') || wp[0] == L_('-'))))
1755 {
1756 /* There was no number. If we are supposed to read a pointer
1757 we must recognize "(nil)" as well. */
1758 if (__builtin_expect (wpsize == 0
1759 && (flags & READ_POINTER)
1760 && (width < 0 || width >= 0)
1761 && c == '('
1762 && TOLOWER (inchar ()) == L_('n')
1763 && TOLOWER (inchar ()) == L_('i')
1764 && TOLOWER (inchar ()) == L_('l')
1765 && inchar () == L_(')'), 1))
1766 /* We must produce the value of a NULL pointer. A single
1767 '0' digit is enough. */
1768 ADDW (L_('0'));
1769 else
1770 {
1771 /* The last read character is not part of the number
1772 anymore. */
1773 ungetc (c, s);
1774
1775 conv_error ();
1776 }
1777 }
1778 else
1779 /* The just read character is not part of the number anymore. */
1780 ungetc (c, s);
1781
1782 /* Convert the number. */
1783 ADDW (L_('\0'));
1784 if (need_longlong && (flags & LONGDBL))
1785 {
1786 if (flags & NUMBER_SIGNED)
1787 num.q = __strtoll_internal (wp, &tw, base, flags & GROUP);
1788 else
1789 num.uq = __strtoull_internal (wp, &tw, base, flags & GROUP);
1790 }
1791 else
1792 {
1793 if (flags & NUMBER_SIGNED)
1794 num.l = __strtol_internal (wp, &tw, base, flags & GROUP);
1795 else
1796 num.ul = __strtoul_internal (wp, &tw, base, flags & GROUP);
1797 }
1798 if (__builtin_expect (wp == tw, 0))
1799 conv_error ();
1800
1801 if (!(flags & SUPPRESS))
1802 {
1803 if (flags & NUMBER_SIGNED)
1804 {
1805 if (need_longlong && (flags & LONGDBL))
1806 *ARG (LONGLONG int *) = num.q;
1807 else if (need_long && (flags & LONG))
1808 *ARG (long int *) = num.l;
1809 else if (flags & SHORT)
1810 *ARG (short int *) = (short int) num.l;
1811 else if (!(flags & CHAR))
1812 *ARG (int *) = (int) num.l;
1813 else
1814 *ARG (signed char *) = (signed char) num.ul;
1815 }
1816 else
1817 {
1818 if (need_longlong && (flags & LONGDBL))
1819 *ARG (unsigned LONGLONG int *) = num.uq;
1820 else if (need_long && (flags & LONG))
1821 *ARG (unsigned long int *) = num.ul;
1822 else if (flags & SHORT)
1823 *ARG (unsigned short int *)
1824 = (unsigned short int) num.ul;
1825 else if (!(flags & CHAR))
1826 *ARG (unsigned int *) = (unsigned int) num.ul;
1827 else
1828 *ARG (unsigned char *) = (unsigned char) num.ul;
1829 }
1830 ++done;
1831 }
1832 break;
1833
1834 case L_('e'): /* Floating-point numbers. */
1835 case L_('E'):
1836 case L_('f'):
1837 case L_('F'):
1838 case L_('g'):
1839 case L_('G'):
1840 case L_('a'):
1841 case L_('A'):
1842 c = inchar ();
1843 if (width > 0)
1844 --width;
1845 if (__builtin_expect (c == EOF, 0))
1846 input_error ();
1847
1848 got_dot = got_e = 0;
1849
1850 /* Check for a sign. */
1851 if (c == L_('-') || c == L_('+'))
1852 {
1853 negative = c == L_('-');
1854 if (__builtin_expect (width == 0 || inchar () == EOF, 0))
1855 /* EOF is only an input error before we read any chars. */
1856 conv_error ();
1857 if (width > 0)
1858 --width;
1859 }
1860 else
1861 negative = 0;
1862
1863 /* Take care for the special arguments "nan" and "inf". */
1864 if (TOLOWER (c) == L_('n'))
1865 {
1866 /* Maybe "nan". */
1867 ADDW (c);
1868 if (__builtin_expect (width == 0
1869 || inchar () == EOF
1870 || TOLOWER (c) != L_('a'), 0))
1871 conv_error ();
1872 if (width > 0)
1873 --width;
1874 ADDW (c);
1875 if (__builtin_expect (width == 0
1876 || inchar () == EOF
1877 || TOLOWER (c) != L_('n'), 0))
1878 conv_error ();
1879 if (width > 0)
1880 --width;
1881 ADDW (c);
1882 /* It is "nan". */
1883 goto scan_float;
1884 }
1885 else if (TOLOWER (c) == L_('i'))
1886 {
1887 /* Maybe "inf" or "infinity". */
1888 ADDW (c);
1889 if (__builtin_expect (width == 0
1890 || inchar () == EOF
1891 || TOLOWER (c) != L_('n'), 0))
1892 conv_error ();
1893 if (width > 0)
1894 --width;
1895 ADDW (c);
1896 if (__builtin_expect (width == 0
1897 || inchar () == EOF
1898 || TOLOWER (c) != L_('f'), 0))
1899 conv_error ();
1900 if (width > 0)
1901 --width;
1902 ADDW (c);
1903 /* It is as least "inf". */
1904 if (width != 0 && inchar () != EOF)
1905 {
1906 if (TOLOWER (c) == L_('i'))
1907 {
1908 if (width > 0)
1909 --width;
1910 /* Now we have to read the rest as well. */
1911 ADDW (c);
1912 if (__builtin_expect (width == 0
1913 || inchar () == EOF
1914 || TOLOWER (c) != L_('n'), 0))
1915 conv_error ();
1916 if (width > 0)
1917 --width;
1918 ADDW (c);
1919 if (__builtin_expect (width == 0
1920 || inchar () == EOF
1921 || TOLOWER (c) != L_('i'), 0))
1922 conv_error ();
1923 if (width > 0)
1924 --width;
1925 ADDW (c);
1926 if (__builtin_expect (width == 0
1927 || inchar () == EOF
1928 || TOLOWER (c) != L_('t'), 0))
1929 conv_error ();
1930 if (width > 0)
1931 --width;
1932 ADDW (c);
1933 if (__builtin_expect (width == 0
1934 || inchar () == EOF
1935 || TOLOWER (c) != L_('y'), 0))
1936 conv_error ();
1937 if (width > 0)
1938 --width;
1939 ADDW (c);
1940 }
1941 else
1942 /* Never mind. */
1943 ungetc (c, s);
1944 }
1945 goto scan_float;
1946 }
1947
1948 exp_char = L_('e');
1949 if (width != 0 && c == L_('0'))
1950 {
1951 ADDW (c);
1952 c = inchar ();
1953 if (width > 0)
1954 --width;
1955 if (width != 0 && TOLOWER (c) == L_('x'))
1956 {
1957 /* It is a number in hexadecimal format. */
1958 ADDW (c);
1959
1960 flags |= HEXA_FLOAT;
1961 exp_char = L_('p');
1962
1963 /* Grouping is not allowed. */
1964 flags &= ~GROUP;
1965 c = inchar ();
1966 if (width > 0)
1967 --width;
1968 }
1969 }
1970
1971 while (1)
1972 {
1973 if (ISDIGIT (c))
1974 ADDW (c);
1975 else if (!got_e && (flags & HEXA_FLOAT) && ISXDIGIT (c))
1976 ADDW (c);
1977 else if (got_e && wp[wpsize - 1] == exp_char
1978 && (c == L_('-') || c == L_('+')))
1979 ADDW (c);
1980 else if (wpsize > 0 && !got_e
1981 && (CHAR_T) TOLOWER (c) == exp_char)
1982 {
1983 ADDW (exp_char);
1984 got_e = got_dot = 1;
1985 }
1986 else
1987 {
1988 #ifdef COMPILE_WSCANF
1989 if (! got_dot && c == decimal)
1990 {
1991 ADDW (c);
1992 got_dot = 1;
1993 }
1994 else if ((flags & GROUP) != 0 && ! got_dot && c == thousands)
1995 ADDW (c);
1996 else
1997 {
1998 /* The last read character is not part of the number
1999 anymore. */
2000 ungetc (c, s);
2001 break;
2002 }
2003 #else
2004 const char *cmpp = decimal;
2005 int avail = width > 0 ? width : INT_MAX;
2006
2007 if (! got_dot)
2008 {
2009 while ((unsigned char) *cmpp == c && avail >= 0)
2010 if (*++cmpp == '\0')
2011 break;
2012 else
2013 {
2014 if (avail == 0 || inchar () == EOF)
2015 break;
2016 --avail;
2017 }
2018 }
2019
2020 if (*cmpp == '\0')
2021 {
2022 /* Add all the characters. */
2023 for (cmpp = decimal; *cmpp != '\0'; ++cmpp)
2024 ADDW ((unsigned char) *cmpp);
2025 if (width > 0)
2026 width = avail;
2027 got_dot = 1;
2028 }
2029 else
2030 {
2031 /* Figure out whether it is a thousands separator.
2032 There is one problem: we possibly read more than
2033 one character. We cannot push them back but since
2034 we know that parts of the `decimal' string matched,
2035 we can compare against it. */
2036 const char *cmp2p = thousands;
2037
2038 if ((flags & GROUP) != 0 && ! got_dot)
2039 {
2040 while (cmp2p - thousands < cmpp - decimal
2041 && *cmp2p == decimal[cmp2p - thousands])
2042 ++cmp2p;
2043 if (cmp2p - thousands == cmpp - decimal)
2044 {
2045 while ((unsigned char) *cmp2p == c && avail >= 0)
2046 if (*++cmp2p == '\0')
2047 break;
2048 else
2049 {
2050 if (avail == 0 || inchar () == EOF)
2051 break;
2052 --avail;
2053 }
2054 }
2055 }
2056
2057 if (cmp2p != NULL && *cmp2p == '\0')
2058 {
2059 /* Add all the characters. */
2060 for (cmpp = thousands; *cmpp != '\0'; ++cmpp)
2061 ADDW ((unsigned char) *cmpp);
2062 if (width > 0)
2063 width = avail;
2064 }
2065 else
2066 {
2067 /* The last read character is not part of the number
2068 anymore. */
2069 ungetc (c, s);
2070 break;
2071 }
2072 }
2073 #endif
2074 }
2075
2076 if (width == 0 || inchar () == EOF)
2077 break;
2078
2079 if (width > 0)
2080 --width;
2081 }
2082
2083 wctrans_t map;
2084 if (__builtin_expect ((flags & I18N) != 0, 0)
2085 /* Hexadecimal floats make no sense, fixing localized
2086 digits with ASCII letters. */
2087 && !(flags & HEXA_FLOAT)
2088 /* Minimum requirement. */
2089 && (wpsize == 0 || got_dot)
2090 && (map = __wctrans ("to_inpunct")) != NULL)
2091 {
2092 /* Reget the first character. */
2093 inchar ();
2094
2095 /* Localized digits, decimal points, and thousands
2096 separator. */
2097 wint_t wcdigits[12];
2098
2099 /* First get decimal equivalent to check if we read it
2100 or not. */
2101 wcdigits[11] = __towctrans (L'.', map);
2102
2103 /* If we have not read any character or have just read
2104 locale decimal point which matches the decimal point
2105 for localized FP numbers, then we may have localized
2106 digits. Note, we test GOT_DOT above. */
2107 #ifdef COMPILE_WSCANF
2108 if (wpsize == 0 || (wpsize == 1 && wcdigits[11] == decimal))
2109 #else
2110 char mbdigits[12][MB_LEN_MAX + 1];
2111
2112 mbstate_t state;
2113 memset (&state, '\0', sizeof (state));
2114
2115 bool match_so_far = wpsize == 0;
2116 size_t mblen = __wcrtomb (mbdigits[11], wcdigits[11], &state);
2117 if (mblen != (size_t) -1)
2118 {
2119 mbdigits[11][mblen] = '\0';
2120 match_so_far |= (wpsize == strlen (decimal)
2121 && strcmp (decimal, mbdigits[11]) == 0);
2122 }
2123 else
2124 {
2125 size_t decimal_len = strlen (decimal);
2126 /* This should always be the case but the data comes
2127 from a file. */
2128 if (decimal_len <= MB_LEN_MAX)
2129 {
2130 match_so_far |= wpsize == decimal_len;
2131 memcpy (mbdigits[11], decimal, decimal_len + 1);
2132 }
2133 else
2134 match_so_far = false;
2135 }
2136
2137 if (match_so_far)
2138 #endif
2139 {
2140 bool have_locthousands = (flags & GROUP) != 0;
2141
2142 /* Now get the digits and the thousands-sep equivalents. */
2143 for (int n = 0; n < 11; ++n)
2144 {
2145 if (n < 10)
2146 wcdigits[n] = __towctrans (L'0' + n, map);
2147 else if (n == 10)
2148 {
2149 wcdigits[10] = __towctrans (L',', map);
2150 have_locthousands &= wcdigits[10] != L'\0';
2151 }
2152
2153 #ifndef COMPILE_WSCANF
2154 memset (&state, '\0', sizeof (state));
2155
2156 size_t mblen = __wcrtomb (mbdigits[n], wcdigits[n],
2157 &state);
2158 if (mblen == (size_t) -1)
2159 {
2160 if (n == 10)
2161 {
2162 if (have_locthousands)
2163 {
2164 size_t thousands_len = strlen (thousands);
2165 if (thousands_len <= MB_LEN_MAX)
2166 memcpy (mbdigits[10], thousands,
2167 thousands_len + 1);
2168 else
2169 have_locthousands = false;
2170 }
2171 }
2172 else
2173 /* Ignore checking against localized digits. */
2174 goto no_i18nflt;
2175 }
2176 else
2177 mbdigits[n][mblen] = '\0';
2178 #endif
2179 }
2180
2181 /* Start checking against localized digits, if
2182 convertion is done correctly. */
2183 while (1)
2184 {
2185 if (got_e && wp[wpsize - 1] == exp_char
2186 && (c == L_('-') || c == L_('+')))
2187 ADDW (c);
2188 else if (wpsize > 0 && !got_e
2189 && (CHAR_T) TOLOWER (c) == exp_char)
2190 {
2191 ADDW (exp_char);
2192 got_e = got_dot = 1;
2193 }
2194 else
2195 {
2196 /* Check against localized digits, decimal point,
2197 and thousands separator. */
2198 int n;
2199 for (n = 0; n < 12; ++n)
2200 {
2201 #ifdef COMPILE_WSCANF
2202 if (c == wcdigits[n])
2203 {
2204 if (n < 10)
2205 ADDW (L_('0') + n);
2206 else if (n == 11 && !got_dot)
2207 {
2208 ADDW (decimal);
2209 got_dot = 1;
2210 }
2211 else if (n == 10 && have_locthousands
2212 && ! got_dot)
2213 ADDW (thousands);
2214 else
2215 /* The last read character is not part
2216 of the number anymore. */
2217 n = 12;
2218
2219 break;
2220 }
2221 #else
2222 const char *cmpp = mbdigits[n];
2223 int avail = width > 0 ? width : INT_MAX;
2224
2225 while ((unsigned char) *cmpp == c && avail >= 0)
2226 if (*++cmpp == '\0')
2227 break;
2228 else
2229 {
2230 if (avail == 0 || inchar () == EOF)
2231 break;
2232 --avail;
2233 }
2234 if (*cmpp == '\0')
2235 {
2236 if (width > 0)
2237 width = avail;
2238
2239 if (n < 10)
2240 ADDW (L_('0') + n);
2241 else if (n == 11 && !got_dot)
2242 {
2243 /* Add all the characters. */
2244 for (cmpp = decimal; *cmpp != '\0';
2245 ++cmpp)
2246 ADDW ((unsigned char) *cmpp);
2247
2248 got_dot = 1;
2249 }
2250 else if (n == 10 && (flags & GROUP) != 0
2251 && ! got_dot)
2252 {
2253 /* Add all the characters. */
2254 for (cmpp = thousands; *cmpp != '\0';
2255 ++cmpp)
2256 ADDW ((unsigned char) *cmpp);
2257 }
2258 else
2259 /* The last read character is not part
2260 of the number anymore. */
2261 n = 12;
2262
2263 break;
2264 }
2265
2266 /* We are pushing all read characters back. */
2267 if (cmpp > mbdigits[n])
2268 {
2269 ungetc (c, s);
2270 while (--cmpp > mbdigits[n])
2271 ungetc_not_eof ((unsigned char) *cmpp, s);
2272 c = (unsigned char) *cmpp;
2273 }
2274 #endif
2275 }
2276
2277 if (n >= 12)
2278 {
2279 /* The last read character is not part
2280 of the number anymore. */
2281 ungetc (c, s);
2282 break;
2283 }
2284 }
2285
2286 if (width == 0 || inchar () == EOF)
2287 break;
2288
2289 if (width > 0)
2290 --width;
2291 }
2292 }
2293
2294 #ifndef COMPILE_WSCANF
2295 no_i18nflt:
2296 ;
2297 #endif
2298 }
2299
2300 /* Have we read any character? If we try to read a number
2301 in hexadecimal notation and we have read only the `0x'
2302 prefix this is an error. */
2303 if (__builtin_expect (wpsize == 0
2304 || ((flags & HEXA_FLOAT) && wpsize == 2), 0))
2305 conv_error ();
2306
2307 scan_float:
2308 /* Convert the number. */
2309 ADDW (L_('\0'));
2310 if ((flags & LONGDBL) && !__ldbl_is_dbl)
2311 {
2312 long double d = __strtold_internal (wp, &tw, flags & GROUP);
2313 if (!(flags & SUPPRESS) && tw != wp)
2314 *ARG (long double *) = negative ? -d : d;
2315 }
2316 else if (flags & (LONG | LONGDBL))
2317 {
2318 double d = __strtod_internal (wp, &tw, flags & GROUP);
2319 if (!(flags & SUPPRESS) && tw != wp)
2320 *ARG (double *) = negative ? -d : d;
2321 }
2322 else
2323 {
2324 float d = __strtof_internal (wp, &tw, flags & GROUP);
2325 if (!(flags & SUPPRESS) && tw != wp)
2326 *ARG (float *) = negative ? -d : d;
2327 }
2328
2329 if (__builtin_expect (tw == wp, 0))
2330 conv_error ();
2331
2332 if (!(flags & SUPPRESS))
2333 ++done;
2334 break;
2335
2336 case L_('['): /* Character class. */
2337 if (flags & LONG)
2338 STRING_ARG (wstr, wchar_t, 100);
2339 else
2340 STRING_ARG (str, char, 100);
2341
2342 if (*f == L_('^'))
2343 {
2344 ++f;
2345 not_in = 1;
2346 }
2347 else
2348 not_in = 0;
2349
2350 if (width < 0)
2351 /* There is no width given so there is also no limit on the
2352 number of characters we read. Therefore we set width to
2353 a very high value to make the algorithm easier. */
2354 width = INT_MAX;
2355
2356 #ifdef COMPILE_WSCANF
2357 /* Find the beginning and the end of the scanlist. We are not
2358 creating a lookup table since it would have to be too large.
2359 Instead we search each time through the string. This is not
2360 a constant lookup time but who uses this feature deserves to
2361 be punished. */
2362 tw = (wchar_t *) f; /* Marks the beginning. */
2363
2364 if (*f == L']')
2365 ++f;
2366
2367 while ((fc = *f++) != L'\0' && fc != L']');
2368
2369 if (__builtin_expect (fc == L'\0', 0))
2370 conv_error ();
2371 wchar_t *twend = (wchar_t *) f - 1;
2372 #else
2373 /* Fill WP with byte flags indexed by character.
2374 We will use this flag map for matching input characters. */
2375 if (wpmax < UCHAR_MAX + 1)
2376 {
2377 wpmax = UCHAR_MAX + 1;
2378 wp = (char *) alloca (wpmax);
2379 }
2380 memset (wp, '\0', UCHAR_MAX + 1);
2381
2382 fc = *f;
2383 if (fc == ']' || fc == '-')
2384 {
2385 /* If ] or - appears before any char in the set, it is not
2386 the terminator or separator, but the first char in the
2387 set. */
2388 wp[fc] = 1;
2389 ++f;
2390 }
2391
2392 while ((fc = *f++) != '\0' && fc != ']')
2393 if (fc == '-' && *f != '\0' && *f != ']'
2394 && (unsigned char) f[-2] <= (unsigned char) *f)
2395 {
2396 /* Add all characters from the one before the '-'
2397 up to (but not including) the next format char. */
2398 for (fc = (unsigned char) f[-2]; fc < (unsigned char) *f; ++fc)
2399 wp[fc] = 1;
2400 }
2401 else
2402 /* Add the character to the flag map. */
2403 wp[fc] = 1;
2404
2405 if (__builtin_expect (fc == '\0', 0))
2406 conv_error();
2407 #endif
2408
2409 if (flags & LONG)
2410 {
2411 size_t now = read_in;
2412 #ifdef COMPILE_WSCANF
2413 if (__builtin_expect (inchar () == WEOF, 0))
2414 input_error ();
2415
2416 do
2417 {
2418 wchar_t *runp;
2419
2420 /* Test whether it's in the scanlist. */
2421 runp = tw;
2422 while (runp < twend)
2423 {
2424 if (runp[0] == L'-' && runp[1] != '\0'
2425 && runp + 1 != twend
2426 && runp != tw
2427 && (unsigned int) runp[-1] <= (unsigned int) runp[1])
2428 {
2429 /* Match against all characters in between the
2430 first and last character of the sequence. */
2431 wchar_t wc;
2432
2433 for (wc = runp[-1] + 1; wc <= runp[1]; ++wc)
2434 if ((wint_t) wc == c)
2435 break;
2436
2437 if (wc <= runp[1] && !not_in)
2438 break;
2439 if (wc <= runp[1] && not_in)
2440 {
2441 /* The current character is not in the
2442 scanset. */
2443 ungetc (c, s);
2444 goto out;
2445 }
2446
2447 runp += 2;
2448 }
2449 else
2450 {
2451 if ((wint_t) *runp == c && !not_in)
2452 break;
2453 if ((wint_t) *runp == c && not_in)
2454 {
2455 ungetc (c, s);
2456 goto out;
2457 }
2458
2459 ++runp;
2460 }
2461 }
2462
2463 if (runp == twend && !not_in)
2464 {
2465 ungetc (c, s);
2466 goto out;
2467 }
2468
2469 if (!(flags & SUPPRESS))
2470 {
2471 *wstr++ = c;
2472
2473 if ((flags & MALLOC)
2474 && wstr == (wchar_t *) *strptr + strsize)
2475 {
2476 /* Enlarge the buffer. */
2477 wstr = (wchar_t *) realloc (*strptr,
2478 (2 * strsize)
2479 * sizeof (wchar_t));
2480 if (wstr == NULL)
2481 {
2482 /* Can't allocate that much. Last-ditch
2483 effort. */
2484 wstr = (wchar_t *)
2485 realloc (*strptr, (strsize + 1)
2486 * sizeof (wchar_t));
2487 if (wstr == NULL)
2488 {
2489 if (flags & POSIX_MALLOC)
2490 {
2491 done = EOF;
2492 goto errout;
2493 }
2494 /* We lose. Oh well. Terminate the string
2495 and stop converting, so at least we don't
2496 skip any input. */
2497 ((wchar_t *) (*strptr))[strsize - 1] = L'\0';
2498 strptr = NULL;
2499 ++done;
2500 conv_error ();
2501 }
2502 else
2503 {
2504 *strptr = (char *) wstr;
2505 wstr += strsize;
2506 ++strsize;
2507 }
2508 }
2509 else
2510 {
2511 *strptr = (char *) wstr;
2512 wstr += strsize;
2513 strsize *= 2;
2514 }
2515 }
2516 }
2517 }
2518 while (--width > 0 && inchar () != WEOF);
2519 out:
2520 #else
2521 char buf[MB_LEN_MAX];
2522 size_t cnt = 0;
2523 mbstate_t cstate;
2524
2525 if (__builtin_expect (inchar () == EOF, 0))
2526 input_error ();
2527
2528 memset (&cstate, '\0', sizeof (cstate));
2529
2530 do
2531 {
2532 if (wp[c] == not_in)
2533 {
2534 ungetc_not_eof (c, s);
2535 break;
2536 }
2537
2538 /* This is easy. */
2539 if (!(flags & SUPPRESS))
2540 {
2541 size_t n;
2542
2543 /* Convert it into a wide character. */
2544 buf[0] = c;
2545 n = __mbrtowc (wstr, buf, 1, &cstate);
2546
2547 if (n == (size_t) -2)
2548 {
2549 /* Possibly correct character, just not enough
2550 input. */
2551 ++cnt;
2552 assert (cnt < MB_CUR_MAX);
2553 continue;
2554 }
2555 cnt = 0;
2556
2557 ++wstr;
2558 if ((flags & MALLOC)
2559 && wstr == (wchar_t *) *strptr + strsize)
2560 {
2561 /* Enlarge the buffer. */
2562 wstr = (wchar_t *) realloc (*strptr,
2563 (2 * strsize
2564 * sizeof (wchar_t)));
2565 if (wstr == NULL)
2566 {
2567 /* Can't allocate that much. Last-ditch
2568 effort. */
2569 wstr = (wchar_t *)
2570 realloc (*strptr, ((strsize + 1)
2571 * sizeof (wchar_t)));
2572 if (wstr == NULL)
2573 {
2574 if (flags & POSIX_MALLOC)
2575 {
2576 done = EOF;
2577 goto errout;
2578 }
2579 /* We lose. Oh well. Terminate the
2580 string and stop converting,
2581 so at least we don't skip any input. */
2582 ((wchar_t *) (*strptr))[strsize - 1] = L'\0';
2583 strptr = NULL;
2584 ++done;
2585 conv_error ();
2586 }
2587 else
2588 {
2589 *strptr = (char *) wstr;
2590 wstr += strsize;
2591 ++strsize;
2592 }
2593 }
2594 else
2595 {
2596 *strptr = (char *) wstr;
2597 wstr += strsize;
2598 strsize *= 2;
2599 }
2600 }
2601 }
2602
2603 if (--width <= 0)
2604 break;
2605 }
2606 while (inchar () != EOF);
2607
2608 if (__builtin_expect (cnt != 0, 0))
2609 /* We stopped in the middle of recognizing another
2610 character. That's a problem. */
2611 encode_error ();
2612 #endif
2613
2614 if (__builtin_expect (now == read_in, 0))
2615 /* We haven't succesfully read any character. */
2616 conv_error ();
2617
2618 if (!(flags & SUPPRESS))
2619 {
2620 *wstr++ = L'\0';
2621
2622 if ((flags & MALLOC)
2623 && wstr - (wchar_t *) *strptr != strsize)
2624 {
2625 wchar_t *cp = (wchar_t *)
2626 realloc (*strptr, ((wstr - (wchar_t *) *strptr)
2627 * sizeof(wchar_t)));
2628 if (cp != NULL)
2629 *strptr = (char *) cp;
2630 }
2631 strptr = NULL;
2632
2633 ++done;
2634 }
2635 }
2636 else
2637 {
2638 size_t now = read_in;
2639
2640 if (__builtin_expect (inchar () == EOF, 0))
2641 input_error ();
2642
2643 #ifdef COMPILE_WSCANF
2644
2645 memset (&state, '\0', sizeof (state));
2646
2647 do
2648 {
2649 wchar_t *runp;
2650 size_t n;
2651
2652 /* Test whether it's in the scanlist. */
2653 runp = tw;
2654 while (runp < twend)
2655 {
2656 if (runp[0] == L'-' && runp[1] != '\0'
2657 && runp + 1 != twend
2658 && runp != tw
2659 && (unsigned int) runp[-1] <= (unsigned int) runp[1])
2660 {
2661 /* Match against all characters in between the
2662 first and last character of the sequence. */
2663 wchar_t wc;
2664
2665 for (wc = runp[-1] + 1; wc <= runp[1]; ++wc)
2666 if ((wint_t) wc == c)
2667 break;
2668
2669 if (wc <= runp[1] && !not_in)
2670 break;
2671 if (wc <= runp[1] && not_in)
2672 {
2673 /* The current character is not in the
2674 scanset. */
2675 ungetc (c, s);
2676 goto out2;
2677 }
2678
2679 runp += 2;
2680 }
2681 else
2682 {
2683 if ((wint_t) *runp == c && !not_in)
2684 break;
2685 if ((wint_t) *runp == c && not_in)
2686 {
2687 ungetc (c, s);
2688 goto out2;
2689 }
2690
2691 ++runp;
2692 }
2693 }
2694
2695 if (runp == twend && !not_in)
2696 {
2697 ungetc (c, s);
2698 goto out2;
2699 }
2700
2701 if (!(flags & SUPPRESS))
2702 {
2703 if ((flags & MALLOC)
2704 && str + MB_CUR_MAX >= *strptr + strsize)
2705 {
2706 /* Enlarge the buffer. */
2707 size_t strleng = str - *strptr;
2708 char *newstr;
2709
2710 newstr = (char *) realloc (*strptr, 2 * strsize);
2711 if (newstr == NULL)
2712 {
2713 /* Can't allocate that much. Last-ditch
2714 effort. */
2715 newstr = (char *) realloc (*strptr,
2716 strleng + MB_CUR_MAX);
2717 if (newstr == NULL)
2718 {
2719 if (flags & POSIX_MALLOC)
2720 {
2721 done = EOF;
2722 goto errout;
2723 }
2724 /* We lose. Oh well. Terminate the string
2725 and stop converting, so at least we don't
2726 skip any input. */
2727 ((char *) (*strptr))[strleng] = '\0';
2728 strptr = NULL;
2729 ++done;
2730 conv_error ();
2731 }
2732 else
2733 {
2734 *strptr = newstr;
2735 str = newstr + strleng;
2736 strsize = strleng + MB_CUR_MAX;
2737 }
2738 }
2739 else
2740 {
2741 *strptr = newstr;
2742 str = newstr + strleng;
2743 strsize *= 2;
2744 }
2745 }
2746 }
2747
2748 n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state);
2749 if (__builtin_expect (n == (size_t) -1, 0))
2750 encode_error ();
2751
2752 assert (n <= MB_CUR_MAX);
2753 str += n;
2754 }
2755 while (--width > 0 && inchar () != WEOF);
2756 out2:
2757 #else
2758 do
2759 {
2760 if (wp[c] == not_in)
2761 {
2762 ungetc_not_eof (c, s);
2763 break;
2764 }
2765
2766 /* This is easy. */
2767 if (!(flags & SUPPRESS))
2768 {
2769 *str++ = c;
2770 if ((flags & MALLOC)
2771 && (char *) str == *strptr + strsize)
2772 {
2773 /* Enlarge the buffer. */
2774 size_t newsize = 2 * strsize;
2775
2776 allocagain:
2777 str = (char *) realloc (*strptr, newsize);
2778 if (str == NULL)
2779 {
2780 /* Can't allocate that much. Last-ditch
2781 effort. */
2782 if (newsize > strsize + 1)
2783 {
2784 newsize = strsize + 1;
2785 goto allocagain;
2786 }
2787 if (flags & POSIX_MALLOC)
2788 {
2789 done = EOF;
2790 goto errout;
2791 }
2792 /* We lose. Oh well. Terminate the
2793 string and stop converting,
2794 so at least we don't skip any input. */
2795 ((char *) (*strptr))[strsize - 1] = '\0';
2796 strptr = NULL;
2797 ++done;
2798 conv_error ();
2799 }
2800 else
2801 {
2802 *strptr = (char *) str;
2803 str += strsize;
2804 strsize = newsize;
2805 }
2806 }
2807 }
2808 }
2809 while (--width > 0 && inchar () != EOF);
2810 #endif
2811
2812 if (__builtin_expect (now == read_in, 0))
2813 /* We haven't succesfully read any character. */
2814 conv_error ();
2815
2816 if (!(flags & SUPPRESS))
2817 {
2818 #ifdef COMPILE_WSCANF
2819 /* We have to emit the code to get into the initial
2820 state. */
2821 char buf[MB_LEN_MAX];
2822 size_t n = __wcrtomb (buf, L'\0', &state);
2823 if (n > 0 && (flags & MALLOC)
2824 && str + n >= *strptr + strsize)
2825 {
2826 /* Enlarge the buffer. */
2827 size_t strleng = str - *strptr;
2828 char *newstr;
2829
2830 newstr = (char *) realloc (*strptr, strleng + n + 1);
2831 if (newstr == NULL)
2832 {
2833 if (flags & POSIX_MALLOC)
2834 {
2835 done = EOF;
2836 goto errout;
2837 }
2838 /* We lose. Oh well. Terminate the string
2839 and stop converting, so at least we don't
2840 skip any input. */
2841 ((char *) (*strptr))[strleng] = '\0';
2842 strptr = NULL;
2843 ++done;
2844 conv_error ();
2845 }
2846 else
2847 {
2848 *strptr = newstr;
2849 str = newstr + strleng;
2850 strsize = strleng + n + 1;
2851 }
2852 }
2853
2854 str = __mempcpy (str, buf, n);
2855 #endif
2856 *str++ = '\0';
2857
2858 if ((flags & MALLOC) && str - *strptr != strsize)
2859 {
2860 char *cp = (char *) realloc (*strptr, str - *strptr);
2861 if (cp != NULL)
2862 *strptr = cp;
2863 }
2864 strptr = NULL;
2865
2866 ++done;
2867 }
2868 }
2869 break;
2870
2871 case L_('p'): /* Generic pointer. */
2872 base = 16;
2873 /* A PTR must be the same size as a `long int'. */
2874 flags &= ~(SHORT|LONGDBL);
2875 if (need_long)
2876 flags |= LONG;
2877 flags |= READ_POINTER;
2878 goto number;
2879
2880 default:
2881 /* If this is an unknown format character punt. */
2882 conv_error ();
2883 }
2884 }
2885
2886 /* The last thing we saw int the format string was a white space.
2887 Consume the last white spaces. */
2888 if (skip_space)
2889 {
2890 do
2891 c = inchar ();
2892 while (ISSPACE (c));
2893 ungetc (c, s);
2894 }
2895
2896 errout:
2897 /* Unlock stream. */
2898 UNLOCK_STREAM (s);
2899
2900 if (use_malloc)
2901 free (wp);
2902
2903 if (errp != NULL)
2904 *errp |= errval;
2905
2906 if (__builtin_expect (done == EOF, 0))
2907 {
2908 if (__builtin_expect (ptrs_to_free != NULL, 0))
2909 {
2910 struct ptrs_to_free *p = ptrs_to_free;
2911 while (p != NULL)
2912 {
2913 for (size_t cnt = 0; cnt < p->count; ++cnt)
2914 {
2915 free (*p->ptrs[cnt]);
2916 *p->ptrs[cnt] = NULL;
2917 }
2918 p = p->next;
2919 ptrs_to_free = p;
2920 }
2921 }
2922 }
2923 else if (__builtin_expect (strptr != NULL, 0))
2924 {
2925 free (*strptr);
2926 *strptr = NULL;
2927 }
2928 return done;
2929 }
2930
2931 #ifdef COMPILE_WSCANF
2932 int
2933 __vfwscanf (FILE *s, const wchar_t *format, va_list argptr)
2934 {
2935 return _IO_vfwscanf (s, format, argptr, NULL);
2936 }
2937 ldbl_weak_alias (__vfwscanf, vfwscanf)
2938 #else
2939 int
2940 ___vfscanf (FILE *s, const char *format, va_list argptr)
2941 {
2942 return _IO_vfscanf_internal (s, format, argptr, NULL);
2943 }
2944 ldbl_strong_alias (_IO_vfscanf_internal, _IO_vfscanf)
2945 ldbl_hidden_def (_IO_vfscanf_internal, _IO_vfscanf)
2946 ldbl_strong_alias (___vfscanf, __vfscanf)
2947 ldbl_hidden_def (___vfscanf, __vfscanf)
2948 ldbl_weak_alias (___vfscanf, vfscanf)
2949 #endif
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