1 | /* Copyright (C) 1991-2018 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 <libc-diag.h> |
31 | #include <libc-lock.h> |
32 | #include <locale/localeinfo.h> |
33 | #include <scratch_buffer.h> |
34 | |
35 | #ifdef __GNUC__ |
36 | # define HAVE_LONGLONG |
37 | # define LONGLONG long long |
38 | #else |
39 | # define LONGLONG long |
40 | #endif |
41 | |
42 | /* Determine whether we have to handle `long long' at all. */ |
43 | #if LONG_MAX == LONG_LONG_MAX |
44 | # define need_longlong 0 |
45 | #else |
46 | # define need_longlong 1 |
47 | #endif |
48 | |
49 | /* Determine whether we have to handle `long'. */ |
50 | #if INT_MAX == LONG_MAX |
51 | # define need_long 0 |
52 | #else |
53 | # define need_long 1 |
54 | #endif |
55 | |
56 | /* Those are flags in the conversion format. */ |
57 | #define LONG 0x0001 /* l: long or double */ |
58 | #define LONGDBL 0x0002 /* L: long long or long double */ |
59 | #define SHORT 0x0004 /* h: short */ |
60 | #define SUPPRESS 0x0008 /* *: suppress assignment */ |
61 | #define POINTER 0x0010 /* weird %p pointer (`fake hex') */ |
62 | #define NOSKIP 0x0020 /* do not skip blanks */ |
63 | #define NUMBER_SIGNED 0x0040 /* signed integer */ |
64 | #define GROUP 0x0080 /* ': group numbers */ |
65 | #define GNU_MALLOC 0x0100 /* a: malloc strings */ |
66 | #define CHAR 0x0200 /* hh: char */ |
67 | #define I18N 0x0400 /* I: use locale's digits */ |
68 | #define HEXA_FLOAT 0x0800 /* hexadecimal float */ |
69 | #define READ_POINTER 0x1000 /* this is a pointer value */ |
70 | #define POSIX_MALLOC 0x2000 /* m: malloc strings */ |
71 | #define MALLOC (GNU_MALLOC | POSIX_MALLOC) |
72 | |
73 | #include <locale/localeinfo.h> |
74 | #include <libioP.h> |
75 | |
76 | #undef va_list |
77 | #define va_list _IO_va_list |
78 | |
79 | #ifdef COMPILE_WSCANF |
80 | # define ungetc(c, s) ((void) (c == WEOF \ |
81 | || (--read_in, \ |
82 | _IO_sputbackwc (s, c)))) |
83 | # define ungetc_not_eof(c, s) ((void) (--read_in, \ |
84 | _IO_sputbackwc (s, c))) |
85 | # define inchar() (c == WEOF ? ((errno = inchar_errno), WEOF) \ |
86 | : ((c = _IO_getwc_unlocked (s)), \ |
87 | (void) (c != WEOF \ |
88 | ? ++read_in \ |
89 | : (size_t) (inchar_errno = errno)), c)) |
90 | |
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 ISSPACE(Ch) __isspace_l (Ch, loc) |
122 | # define ISDIGIT(Ch) __isdigit_l (Ch, loc) |
123 | # define ISXDIGIT(Ch) __isxdigit_l (Ch, loc) |
124 | # define TOLOWER(Ch) __tolower_l ((unsigned char) (Ch), loc) |
125 | # define ORIENT if (_IO_vtable_offset (s) == 0 \ |
126 | && _IO_fwide (s, -1) != -1) \ |
127 | return EOF |
128 | |
129 | # define L_(Str) Str |
130 | # define CHAR_T char |
131 | # define UCHAR_T unsigned char |
132 | # define WINT_T int |
133 | #endif |
134 | |
135 | #include "printf-parse.h" /* Use read_int. */ |
136 | |
137 | #define encode_error() do { \ |
138 | errval = 4; \ |
139 | __set_errno (EILSEQ); \ |
140 | goto errout; \ |
141 | } while (0) |
142 | #define conv_error() do { \ |
143 | errval = 2; \ |
144 | goto errout; \ |
145 | } while (0) |
146 | #define input_error() do { \ |
147 | errval = 1; \ |
148 | if (done == 0) done = EOF; \ |
149 | goto errout; \ |
150 | } while (0) |
151 | #define add_ptr_to_free(ptr) \ |
152 | do \ |
153 | { \ |
154 | if (ptrs_to_free == NULL \ |
155 | || ptrs_to_free->count == (sizeof (ptrs_to_free->ptrs) \ |
156 | / sizeof (ptrs_to_free->ptrs[0]))) \ |
157 | { \ |
158 | struct ptrs_to_free *new_ptrs = alloca (sizeof (*ptrs_to_free)); \ |
159 | new_ptrs->count = 0; \ |
160 | new_ptrs->next = ptrs_to_free; \ |
161 | ptrs_to_free = new_ptrs; \ |
162 | } \ |
163 | ptrs_to_free->ptrs[ptrs_to_free->count++] = (ptr); \ |
164 | } \ |
165 | while (0) |
166 | #define ARGCHECK(s, format) \ |
167 | do \ |
168 | { \ |
169 | /* Check file argument for consistence. */ \ |
170 | CHECK_FILE (s, EOF); \ |
171 | if (s->_flags & _IO_NO_READS) \ |
172 | { \ |
173 | __set_errno (EBADF); \ |
174 | return EOF; \ |
175 | } \ |
176 | else if (format == NULL) \ |
177 | { \ |
178 | MAYBE_SET_EINVAL; \ |
179 | return EOF; \ |
180 | } \ |
181 | } while (0) |
182 | #define LOCK_STREAM(S) \ |
183 | __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, (S)); \ |
184 | _IO_flockfile (S) |
185 | #define UNLOCK_STREAM(S) \ |
186 | _IO_funlockfile (S); \ |
187 | __libc_cleanup_region_end (0) |
188 | |
189 | struct ptrs_to_free |
190 | { |
191 | size_t count; |
192 | struct ptrs_to_free *next; |
193 | char **ptrs[32]; |
194 | }; |
195 | |
196 | struct char_buffer { |
197 | CHAR_T *current; |
198 | CHAR_T *end; |
199 | struct scratch_buffer scratch; |
200 | }; |
201 | |
202 | /* Returns a pointer to the first CHAR_T object in the buffer. Only |
203 | valid if char_buffer_add (BUFFER, CH) has been called and |
204 | char_buffer_error (BUFFER) is false. */ |
205 | static inline CHAR_T * |
206 | char_buffer_start (const struct char_buffer *buffer) |
207 | { |
208 | return (CHAR_T *) buffer->scratch.data; |
209 | } |
210 | |
211 | /* Returns the number of CHAR_T objects in the buffer. Only valid if |
212 | char_buffer_error (BUFFER) is false. */ |
213 | static inline size_t |
214 | char_buffer_size (const struct char_buffer *buffer) |
215 | { |
216 | return buffer->current - char_buffer_start (buffer); |
217 | } |
218 | |
219 | /* Reinitializes BUFFER->current and BUFFER->end to cover the entire |
220 | scratch buffer. */ |
221 | static inline void |
222 | char_buffer_rewind (struct char_buffer *buffer) |
223 | { |
224 | buffer->current = char_buffer_start (buffer); |
225 | buffer->end = buffer->current + buffer->scratch.length / sizeof (CHAR_T); |
226 | } |
227 | |
228 | /* Returns true if a previous call to char_buffer_add (BUFFER, CH) |
229 | failed. */ |
230 | static inline bool |
231 | char_buffer_error (const struct char_buffer *buffer) |
232 | { |
233 | return __glibc_unlikely (buffer->current == NULL); |
234 | } |
235 | |
236 | /* Slow path for char_buffer_add. */ |
237 | static void |
238 | char_buffer_add_slow (struct char_buffer *buffer, CHAR_T ch) |
239 | { |
240 | if (char_buffer_error (buffer)) |
241 | return; |
242 | size_t offset = buffer->end - (CHAR_T *) buffer->scratch.data; |
243 | if (!scratch_buffer_grow_preserve (&buffer->scratch)) |
244 | { |
245 | buffer->current = NULL; |
246 | buffer->end = NULL; |
247 | return; |
248 | } |
249 | char_buffer_rewind (buffer); |
250 | buffer->current += offset; |
251 | *buffer->current++ = ch; |
252 | } |
253 | |
254 | /* Adds CH to BUFFER. This function does not report any errors, check |
255 | for them with char_buffer_error. */ |
256 | static inline void |
257 | char_buffer_add (struct char_buffer *buffer, CHAR_T ch) |
258 | __attribute__ ((always_inline)); |
259 | static inline void |
260 | char_buffer_add (struct char_buffer *buffer, CHAR_T ch) |
261 | { |
262 | if (__glibc_unlikely (buffer->current == buffer->end)) |
263 | char_buffer_add_slow (buffer, ch); |
264 | else |
265 | *buffer->current++ = ch; |
266 | } |
267 | |
268 | /* Read formatted input from S according to the format string |
269 | FORMAT, using the argument list in ARG. |
270 | Return the number of assignments made, or -1 for an input error. */ |
271 | #ifdef COMPILE_WSCANF |
272 | int |
273 | _IO_vfwscanf (_IO_FILE *s, const wchar_t *format, _IO_va_list argptr, |
274 | int *errp) |
275 | #else |
276 | int |
277 | _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr, |
278 | int *errp) |
279 | #endif |
280 | { |
281 | va_list arg; |
282 | const CHAR_T *f = format; |
283 | UCHAR_T fc; /* Current character of the format. */ |
284 | WINT_T done = 0; /* Assignments done. */ |
285 | size_t read_in = 0; /* Chars read in. */ |
286 | WINT_T c = 0; /* Last char read. */ |
287 | int width; /* Maximum field width. */ |
288 | int flags; /* Modifiers for current format element. */ |
289 | int errval = 0; |
290 | #ifndef COMPILE_WSCANF |
291 | locale_t loc = _NL_CURRENT_LOCALE; |
292 | struct __locale_data *const curctype = loc->__locales[LC_CTYPE]; |
293 | #endif |
294 | |
295 | /* Errno of last failed inchar call. */ |
296 | int inchar_errno = 0; |
297 | /* Status for reading F-P nums. */ |
298 | char got_digit, got_dot, got_e, negative; |
299 | /* If a [...] is a [^...]. */ |
300 | CHAR_T not_in; |
301 | #define exp_char not_in |
302 | /* Base for integral numbers. */ |
303 | int base; |
304 | /* Decimal point character. */ |
305 | #ifdef COMPILE_WSCANF |
306 | wint_t decimal; |
307 | #else |
308 | const char *decimal; |
309 | #endif |
310 | /* The thousands character of the current locale. */ |
311 | #ifdef COMPILE_WSCANF |
312 | wint_t thousands; |
313 | #else |
314 | const char *thousands; |
315 | #endif |
316 | struct ptrs_to_free *ptrs_to_free = NULL; |
317 | /* State for the conversions. */ |
318 | mbstate_t state; |
319 | /* Integral holding variables. */ |
320 | union |
321 | { |
322 | long long int q; |
323 | unsigned long long int uq; |
324 | long int l; |
325 | unsigned long int ul; |
326 | } num; |
327 | /* Character-buffer pointer. */ |
328 | char *str = NULL; |
329 | wchar_t *wstr = NULL; |
330 | char **strptr = NULL; |
331 | ssize_t strsize = 0; |
332 | /* We must not react on white spaces immediately because they can |
333 | possibly be matched even if in the input stream no character is |
334 | available anymore. */ |
335 | int skip_space = 0; |
336 | /* Workspace. */ |
337 | CHAR_T *tw; /* Temporary pointer. */ |
338 | struct char_buffer charbuf; |
339 | scratch_buffer_init (&charbuf.scratch); |
340 | |
341 | #ifdef __va_copy |
342 | __va_copy (arg, argptr); |
343 | #else |
344 | arg = (va_list) argptr; |
345 | #endif |
346 | |
347 | #ifdef ORIENT |
348 | ORIENT; |
349 | #endif |
350 | |
351 | ARGCHECK (s, format); |
352 | |
353 | { |
354 | #ifndef COMPILE_WSCANF |
355 | struct __locale_data *const curnumeric = loc->__locales[LC_NUMERIC]; |
356 | #endif |
357 | |
358 | /* Figure out the decimal point character. */ |
359 | #ifdef COMPILE_WSCANF |
360 | decimal = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_DECIMAL_POINT_WC); |
361 | #else |
362 | decimal = curnumeric->values[_NL_ITEM_INDEX (DECIMAL_POINT)].string; |
363 | #endif |
364 | /* Figure out the thousands separator character. */ |
365 | #ifdef COMPILE_WSCANF |
366 | thousands = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_THOUSANDS_SEP_WC); |
367 | #else |
368 | thousands = curnumeric->values[_NL_ITEM_INDEX (THOUSANDS_SEP)].string; |
369 | if (*thousands == '\0') |
370 | thousands = NULL; |
371 | #endif |
372 | } |
373 | |
374 | /* Lock the stream. */ |
375 | LOCK_STREAM (s); |
376 | |
377 | |
378 | #ifndef COMPILE_WSCANF |
379 | /* From now on we use `state' to convert the format string. */ |
380 | memset (&state, '\0', sizeof (state)); |
381 | #endif |
382 | |
383 | /* Run through the format string. */ |
384 | while (*f != '\0') |
385 | { |
386 | unsigned int argpos; |
387 | /* Extract the next argument, which is of type TYPE. |
388 | For a %N$... spec, this is the Nth argument from the beginning; |
389 | otherwise it is the next argument after the state now in ARG. */ |
390 | #ifdef __va_copy |
391 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ |
392 | ({ unsigned int pos = argpos; \ |
393 | va_list arg; \ |
394 | __va_copy (arg, argptr); \ |
395 | while (--pos > 0) \ |
396 | (void) va_arg (arg, void *); \ |
397 | va_arg (arg, type); \ |
398 | })) |
399 | #else |
400 | # if 0 |
401 | /* XXX Possible optimization. */ |
402 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ |
403 | ({ va_list arg = (va_list) argptr; \ |
404 | arg = (va_list) ((char *) arg \ |
405 | + (argpos - 1) \ |
406 | * __va_rounded_size (void *)); \ |
407 | va_arg (arg, type); \ |
408 | })) |
409 | # else |
410 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ |
411 | ({ unsigned int pos = argpos; \ |
412 | va_list arg = (va_list) argptr; \ |
413 | while (--pos > 0) \ |
414 | (void) va_arg (arg, void *); \ |
415 | va_arg (arg, type); \ |
416 | })) |
417 | # endif |
418 | #endif |
419 | |
420 | #ifndef COMPILE_WSCANF |
421 | if (!isascii ((unsigned char) *f)) |
422 | { |
423 | /* Non-ASCII, may be a multibyte. */ |
424 | int len = __mbrlen (f, strlen (f), &state); |
425 | if (len > 0) |
426 | { |
427 | do |
428 | { |
429 | c = inchar (); |
430 | if (__glibc_unlikely (c == EOF)) |
431 | input_error (); |
432 | else if (c != (unsigned char) *f++) |
433 | { |
434 | ungetc_not_eof (c, s); |
435 | conv_error (); |
436 | } |
437 | } |
438 | while (--len > 0); |
439 | continue; |
440 | } |
441 | } |
442 | #endif |
443 | |
444 | fc = *f++; |
445 | if (fc != '%') |
446 | { |
447 | /* Remember to skip spaces. */ |
448 | if (ISSPACE (fc)) |
449 | { |
450 | skip_space = 1; |
451 | continue; |
452 | } |
453 | |
454 | /* Read a character. */ |
455 | c = inchar (); |
456 | |
457 | /* Characters other than format specs must just match. */ |
458 | if (__glibc_unlikely (c == EOF)) |
459 | input_error (); |
460 | |
461 | /* We saw white space char as the last character in the format |
462 | string. Now it's time to skip all leading white space. */ |
463 | if (skip_space) |
464 | { |
465 | while (ISSPACE (c)) |
466 | if (__glibc_unlikely (inchar () == EOF)) |
467 | input_error (); |
468 | skip_space = 0; |
469 | } |
470 | |
471 | if (__glibc_unlikely (c != fc)) |
472 | { |
473 | ungetc (c, s); |
474 | conv_error (); |
475 | } |
476 | |
477 | continue; |
478 | } |
479 | |
480 | /* This is the start of the conversion string. */ |
481 | flags = 0; |
482 | |
483 | /* Initialize state of modifiers. */ |
484 | argpos = 0; |
485 | |
486 | /* Prepare temporary buffer. */ |
487 | char_buffer_rewind (&charbuf); |
488 | |
489 | /* Check for a positional parameter specification. */ |
490 | if (ISDIGIT ((UCHAR_T) *f)) |
491 | { |
492 | argpos = read_int ((const UCHAR_T **) &f); |
493 | if (*f == L_('$')) |
494 | ++f; |
495 | else |
496 | { |
497 | /* Oops; that was actually the field width. */ |
498 | width = argpos; |
499 | argpos = 0; |
500 | goto got_width; |
501 | } |
502 | } |
503 | |
504 | /* Check for the assignment-suppressing, the number grouping flag, |
505 | and the signal to use the locale's digit representation. */ |
506 | while (*f == L_('*') || *f == L_('\'') || *f == L_('I')) |
507 | switch (*f++) |
508 | { |
509 | case L_('*'): |
510 | flags |= SUPPRESS; |
511 | break; |
512 | case L_('\''): |
513 | #ifdef COMPILE_WSCANF |
514 | if (thousands != L'\0') |
515 | #else |
516 | if (thousands != NULL) |
517 | #endif |
518 | flags |= GROUP; |
519 | break; |
520 | case L_('I'): |
521 | flags |= I18N; |
522 | break; |
523 | } |
524 | |
525 | /* Find the maximum field width. */ |
526 | width = 0; |
527 | if (ISDIGIT ((UCHAR_T) *f)) |
528 | width = read_int ((const UCHAR_T **) &f); |
529 | got_width: |
530 | if (width == 0) |
531 | width = -1; |
532 | |
533 | /* Check for type modifiers. */ |
534 | switch (*f++) |
535 | { |
536 | case L_('h'): |
537 | /* ints are short ints or chars. */ |
538 | if (*f == L_('h')) |
539 | { |
540 | ++f; |
541 | flags |= CHAR; |
542 | } |
543 | else |
544 | flags |= SHORT; |
545 | break; |
546 | case L_('l'): |
547 | if (*f == L_('l')) |
548 | { |
549 | /* A double `l' is equivalent to an `L'. */ |
550 | ++f; |
551 | flags |= LONGDBL | LONG; |
552 | } |
553 | else |
554 | /* ints are long ints. */ |
555 | flags |= LONG; |
556 | break; |
557 | case L_('q'): |
558 | case L_('L'): |
559 | /* doubles are long doubles, and ints are long long ints. */ |
560 | flags |= LONGDBL | LONG; |
561 | break; |
562 | case L_('a'): |
563 | /* The `a' is used as a flag only if followed by `s', `S' or |
564 | `['. */ |
565 | if (*f != L_('s') && *f != L_('S') && *f != L_('[')) |
566 | { |
567 | --f; |
568 | break; |
569 | } |
570 | /* In __isoc99_*scanf %as, %aS and %a[ extension is not |
571 | supported at all. */ |
572 | if (s->_flags2 & _IO_FLAGS2_SCANF_STD) |
573 | { |
574 | --f; |
575 | break; |
576 | } |
577 | /* String conversions (%s, %[) take a `char **' |
578 | arg and fill it in with a malloc'd pointer. */ |
579 | flags |= GNU_MALLOC; |
580 | break; |
581 | case L_('m'): |
582 | flags |= POSIX_MALLOC; |
583 | if (*f == L_('l')) |
584 | { |
585 | ++f; |
586 | flags |= LONG; |
587 | } |
588 | break; |
589 | case L_('z'): |
590 | if (need_longlong && sizeof (size_t) > sizeof (unsigned long int)) |
591 | flags |= LONGDBL; |
592 | else if (sizeof (size_t) > sizeof (unsigned int)) |
593 | flags |= LONG; |
594 | break; |
595 | case L_('j'): |
596 | if (need_longlong && sizeof (uintmax_t) > sizeof (unsigned long int)) |
597 | flags |= LONGDBL; |
598 | else if (sizeof (uintmax_t) > sizeof (unsigned int)) |
599 | flags |= LONG; |
600 | break; |
601 | case L_('t'): |
602 | if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int)) |
603 | flags |= LONGDBL; |
604 | else if (sizeof (ptrdiff_t) > sizeof (int)) |
605 | flags |= LONG; |
606 | break; |
607 | default: |
608 | /* Not a recognized modifier. Backup. */ |
609 | --f; |
610 | break; |
611 | } |
612 | |
613 | /* End of the format string? */ |
614 | if (__glibc_unlikely (*f == L_('\0'))) |
615 | conv_error (); |
616 | |
617 | /* Find the conversion specifier. */ |
618 | fc = *f++; |
619 | if (skip_space || (fc != L_('[') && fc != L_('c') |
620 | && fc != L_('C') && fc != L_('n'))) |
621 | { |
622 | /* Eat whitespace. */ |
623 | int save_errno = errno; |
624 | __set_errno (0); |
625 | do |
626 | /* We add the additional test for EOF here since otherwise |
627 | inchar will restore the old errno value which might be |
628 | EINTR but does not indicate an interrupt since nothing |
629 | was read at this time. */ |
630 | if (__builtin_expect ((c == EOF || inchar () == EOF) |
631 | && errno == EINTR, 0)) |
632 | input_error (); |
633 | while (ISSPACE (c)); |
634 | __set_errno (save_errno); |
635 | ungetc (c, s); |
636 | skip_space = 0; |
637 | } |
638 | |
639 | switch (fc) |
640 | { |
641 | case L_('%'): /* Must match a literal '%'. */ |
642 | c = inchar (); |
643 | if (__glibc_unlikely (c == EOF)) |
644 | input_error (); |
645 | if (__glibc_unlikely (c != fc)) |
646 | { |
647 | ungetc_not_eof (c, s); |
648 | conv_error (); |
649 | } |
650 | break; |
651 | |
652 | case L_('n'): /* Answer number of assignments done. */ |
653 | /* Corrigendum 1 to ISO C 1990 describes the allowed flags |
654 | with the 'n' conversion specifier. */ |
655 | if (!(flags & SUPPRESS)) |
656 | { |
657 | /* Don't count the read-ahead. */ |
658 | if (need_longlong && (flags & LONGDBL)) |
659 | *ARG (long long int *) = read_in; |
660 | else if (need_long && (flags & LONG)) |
661 | *ARG (long int *) = read_in; |
662 | else if (flags & SHORT) |
663 | *ARG (short int *) = read_in; |
664 | else if (!(flags & CHAR)) |
665 | *ARG (int *) = read_in; |
666 | else |
667 | *ARG (char *) = read_in; |
668 | |
669 | #ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1 |
670 | /* We have a severe problem here. The ISO C standard |
671 | contradicts itself in explaining the effect of the %n |
672 | format in `scanf'. While in ISO C:1990 and the ISO C |
673 | Amendement 1:1995 the result is described as |
674 | |
675 | Execution of a %n directive does not effect the |
676 | assignment count returned at the completion of |
677 | execution of the f(w)scanf function. |
678 | |
679 | in ISO C Corrigendum 1:1994 the following was added: |
680 | |
681 | Subclause 7.9.6.2 |
682 | Add the following fourth example: |
683 | In: |
684 | #include <stdio.h> |
685 | int d1, d2, n1, n2, i; |
686 | i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2); |
687 | the value 123 is assigned to d1 and the value3 to n1. |
688 | Because %n can never get an input failure the value |
689 | of 3 is also assigned to n2. The value of d2 is not |
690 | affected. The value 3 is assigned to i. |
691 | |
692 | We go for now with the historically correct code from ISO C, |
693 | i.e., we don't count the %n assignments. When it ever |
694 | should proof to be wrong just remove the #ifdef above. */ |
695 | ++done; |
696 | #endif |
697 | } |
698 | break; |
699 | |
700 | case L_('c'): /* Match characters. */ |
701 | if ((flags & LONG) == 0) |
702 | { |
703 | if (width == -1) |
704 | width = 1; |
705 | |
706 | #define STRING_ARG(Str, Type, Width) \ |
707 | do if (!(flags & SUPPRESS)) \ |
708 | { \ |
709 | if (flags & MALLOC) \ |
710 | { \ |
711 | /* The string is to be stored in a malloc'd buffer. */ \ |
712 | /* For %mS using char ** is actually wrong, but \ |
713 | shouldn't make a difference on any arch glibc \ |
714 | supports and would unnecessarily complicate \ |
715 | things. */ \ |
716 | strptr = ARG (char **); \ |
717 | if (strptr == NULL) \ |
718 | conv_error (); \ |
719 | /* Allocate an initial buffer. */ \ |
720 | strsize = Width; \ |
721 | *strptr = (char *) malloc (strsize * sizeof (Type)); \ |
722 | Str = (Type *) *strptr; \ |
723 | if (Str != NULL) \ |
724 | add_ptr_to_free (strptr); \ |
725 | else if (flags & POSIX_MALLOC) \ |
726 | { \ |
727 | done = EOF; \ |
728 | goto errout; \ |
729 | } \ |
730 | } \ |
731 | else \ |
732 | Str = ARG (Type *); \ |
733 | if (Str == NULL) \ |
734 | conv_error (); \ |
735 | } while (0) |
736 | #ifdef COMPILE_WSCANF |
737 | STRING_ARG (str, char, 100); |
738 | #else |
739 | STRING_ARG (str, char, (width > 1024 ? 1024 : width)); |
740 | #endif |
741 | |
742 | c = inchar (); |
743 | if (__glibc_unlikely (c == EOF)) |
744 | input_error (); |
745 | |
746 | #ifdef COMPILE_WSCANF |
747 | /* We have to convert the wide character(s) into multibyte |
748 | characters and store the result. */ |
749 | memset (&state, '\0', sizeof (state)); |
750 | |
751 | do |
752 | { |
753 | size_t n; |
754 | |
755 | if (!(flags & SUPPRESS) && (flags & POSIX_MALLOC) |
756 | && *strptr + strsize - str <= MB_LEN_MAX) |
757 | { |
758 | /* We have to enlarge the buffer if the `m' flag |
759 | was given. */ |
760 | size_t strleng = str - *strptr; |
761 | char *newstr; |
762 | |
763 | newstr = (char *) realloc (*strptr, strsize * 2); |
764 | if (newstr == NULL) |
765 | { |
766 | /* Can't allocate that much. Last-ditch effort. */ |
767 | newstr = (char *) realloc (*strptr, |
768 | strleng + MB_LEN_MAX); |
769 | if (newstr == NULL) |
770 | { |
771 | /* c can't have `a' flag, only `m'. */ |
772 | done = EOF; |
773 | goto errout; |
774 | } |
775 | else |
776 | { |
777 | *strptr = newstr; |
778 | str = newstr + strleng; |
779 | strsize = strleng + MB_LEN_MAX; |
780 | } |
781 | } |
782 | else |
783 | { |
784 | *strptr = newstr; |
785 | str = newstr + strleng; |
786 | strsize *= 2; |
787 | } |
788 | } |
789 | |
790 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); |
791 | if (__glibc_unlikely (n == (size_t) -1)) |
792 | /* No valid wide character. */ |
793 | input_error (); |
794 | |
795 | /* Increment the output pointer. Even if we don't |
796 | write anything. */ |
797 | str += n; |
798 | } |
799 | while (--width > 0 && inchar () != EOF); |
800 | #else |
801 | if (!(flags & SUPPRESS)) |
802 | { |
803 | do |
804 | { |
805 | if ((flags & MALLOC) |
806 | && (char *) str == *strptr + strsize) |
807 | { |
808 | /* Enlarge the buffer. */ |
809 | size_t newsize |
810 | = strsize |
811 | + (strsize >= width ? width - 1 : strsize); |
812 | |
813 | str = (char *) realloc (*strptr, newsize); |
814 | if (str == NULL) |
815 | { |
816 | /* Can't allocate that much. Last-ditch |
817 | effort. */ |
818 | str = (char *) realloc (*strptr, strsize + 1); |
819 | if (str == NULL) |
820 | { |
821 | /* c can't have `a' flag, only `m'. */ |
822 | done = EOF; |
823 | goto errout; |
824 | } |
825 | else |
826 | { |
827 | *strptr = (char *) str; |
828 | str += strsize; |
829 | ++strsize; |
830 | } |
831 | } |
832 | else |
833 | { |
834 | *strptr = (char *) str; |
835 | str += strsize; |
836 | strsize = newsize; |
837 | } |
838 | } |
839 | *str++ = c; |
840 | } |
841 | while (--width > 0 && inchar () != EOF); |
842 | } |
843 | else |
844 | while (--width > 0 && inchar () != EOF); |
845 | #endif |
846 | |
847 | if (!(flags & SUPPRESS)) |
848 | { |
849 | if ((flags & MALLOC) && str - *strptr != strsize) |
850 | { |
851 | char *cp = (char *) realloc (*strptr, str - *strptr); |
852 | if (cp != NULL) |
853 | *strptr = cp; |
854 | } |
855 | strptr = NULL; |
856 | ++done; |
857 | } |
858 | |
859 | break; |
860 | } |
861 | /* FALLTHROUGH */ |
862 | case L_('C'): |
863 | if (width == -1) |
864 | width = 1; |
865 | |
866 | STRING_ARG (wstr, wchar_t, (width > 1024 ? 1024 : width)); |
867 | |
868 | c = inchar (); |
869 | if (__glibc_unlikely (c == EOF)) |
870 | input_error (); |
871 | |
872 | #ifdef COMPILE_WSCANF |
873 | /* Just store the incoming wide characters. */ |
874 | if (!(flags & SUPPRESS)) |
875 | { |
876 | do |
877 | { |
878 | if ((flags & MALLOC) |
879 | && wstr == (wchar_t *) *strptr + strsize) |
880 | { |
881 | size_t newsize |
882 | = strsize + (strsize > width ? width - 1 : strsize); |
883 | /* Enlarge the buffer. */ |
884 | wstr = (wchar_t *) realloc (*strptr, |
885 | newsize * sizeof (wchar_t)); |
886 | if (wstr == NULL) |
887 | { |
888 | /* Can't allocate that much. Last-ditch effort. */ |
889 | wstr = (wchar_t *) realloc (*strptr, |
890 | (strsize + 1) |
891 | * sizeof (wchar_t)); |
892 | if (wstr == NULL) |
893 | { |
894 | /* C or lc can't have `a' flag, only `m' |
895 | flag. */ |
896 | done = EOF; |
897 | goto errout; |
898 | } |
899 | else |
900 | { |
901 | *strptr = (char *) wstr; |
902 | wstr += strsize; |
903 | ++strsize; |
904 | } |
905 | } |
906 | else |
907 | { |
908 | *strptr = (char *) wstr; |
909 | wstr += strsize; |
910 | strsize = newsize; |
911 | } |
912 | } |
913 | *wstr++ = c; |
914 | } |
915 | while (--width > 0 && inchar () != EOF); |
916 | } |
917 | else |
918 | while (--width > 0 && inchar () != EOF); |
919 | #else |
920 | { |
921 | /* We have to convert the multibyte input sequence to wide |
922 | characters. */ |
923 | char buf[1]; |
924 | mbstate_t cstate; |
925 | |
926 | memset (&cstate, '\0', sizeof (cstate)); |
927 | |
928 | do |
929 | { |
930 | /* This is what we present the mbrtowc function first. */ |
931 | buf[0] = c; |
932 | |
933 | if (!(flags & SUPPRESS) && (flags & MALLOC) |
934 | && wstr == (wchar_t *) *strptr + strsize) |
935 | { |
936 | size_t newsize |
937 | = strsize + (strsize > width ? width - 1 : strsize); |
938 | /* Enlarge the buffer. */ |
939 | wstr = (wchar_t *) realloc (*strptr, |
940 | newsize * sizeof (wchar_t)); |
941 | if (wstr == NULL) |
942 | { |
943 | /* Can't allocate that much. Last-ditch effort. */ |
944 | wstr = (wchar_t *) realloc (*strptr, |
945 | ((strsize + 1) |
946 | * sizeof (wchar_t))); |
947 | if (wstr == NULL) |
948 | { |
949 | /* C or lc can't have `a' flag, only `m' flag. */ |
950 | done = EOF; |
951 | goto errout; |
952 | } |
953 | else |
954 | { |
955 | *strptr = (char *) wstr; |
956 | wstr += strsize; |
957 | ++strsize; |
958 | } |
959 | } |
960 | else |
961 | { |
962 | *strptr = (char *) wstr; |
963 | wstr += strsize; |
964 | strsize = newsize; |
965 | } |
966 | } |
967 | |
968 | while (1) |
969 | { |
970 | size_t n; |
971 | |
972 | n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, |
973 | buf, 1, &cstate); |
974 | |
975 | if (n == (size_t) -2) |
976 | { |
977 | /* Possibly correct character, just not enough |
978 | input. */ |
979 | if (__glibc_unlikely (inchar () == EOF)) |
980 | encode_error (); |
981 | |
982 | buf[0] = c; |
983 | continue; |
984 | } |
985 | |
986 | if (__glibc_unlikely (n != 1)) |
987 | encode_error (); |
988 | |
989 | /* We have a match. */ |
990 | break; |
991 | } |
992 | |
993 | /* Advance the result pointer. */ |
994 | ++wstr; |
995 | } |
996 | while (--width > 0 && inchar () != EOF); |
997 | } |
998 | #endif |
999 | |
1000 | if (!(flags & SUPPRESS)) |
1001 | { |
1002 | if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) |
1003 | { |
1004 | wchar_t *cp = (wchar_t *) realloc (*strptr, |
1005 | ((wstr |
1006 | - (wchar_t *) *strptr) |
1007 | * sizeof (wchar_t))); |
1008 | if (cp != NULL) |
1009 | *strptr = (char *) cp; |
1010 | } |
1011 | strptr = NULL; |
1012 | |
1013 | ++done; |
1014 | } |
1015 | |
1016 | break; |
1017 | |
1018 | case L_('s'): /* Read a string. */ |
1019 | if (!(flags & LONG)) |
1020 | { |
1021 | STRING_ARG (str, char, 100); |
1022 | |
1023 | c = inchar (); |
1024 | if (__glibc_unlikely (c == EOF)) |
1025 | input_error (); |
1026 | |
1027 | #ifdef COMPILE_WSCANF |
1028 | memset (&state, '\0', sizeof (state)); |
1029 | #endif |
1030 | |
1031 | do |
1032 | { |
1033 | if (ISSPACE (c)) |
1034 | { |
1035 | ungetc_not_eof (c, s); |
1036 | break; |
1037 | } |
1038 | |
1039 | #ifdef COMPILE_WSCANF |
1040 | /* This is quite complicated. We have to convert the |
1041 | wide characters into multibyte characters and then |
1042 | store them. */ |
1043 | { |
1044 | size_t n; |
1045 | |
1046 | if (!(flags & SUPPRESS) && (flags & MALLOC) |
1047 | && *strptr + strsize - str <= MB_LEN_MAX) |
1048 | { |
1049 | /* We have to enlarge the buffer if the `a' or `m' |
1050 | flag was given. */ |
1051 | size_t strleng = str - *strptr; |
1052 | char *newstr; |
1053 | |
1054 | newstr = (char *) realloc (*strptr, strsize * 2); |
1055 | if (newstr == NULL) |
1056 | { |
1057 | /* Can't allocate that much. Last-ditch |
1058 | effort. */ |
1059 | newstr = (char *) realloc (*strptr, |
1060 | strleng + MB_LEN_MAX); |
1061 | if (newstr == NULL) |
1062 | { |
1063 | if (flags & POSIX_MALLOC) |
1064 | { |
1065 | done = EOF; |
1066 | goto errout; |
1067 | } |
1068 | /* We lose. Oh well. Terminate the |
1069 | string and stop converting, |
1070 | so at least we don't skip any input. */ |
1071 | ((char *) (*strptr))[strleng] = '\0'; |
1072 | strptr = NULL; |
1073 | ++done; |
1074 | conv_error (); |
1075 | } |
1076 | else |
1077 | { |
1078 | *strptr = newstr; |
1079 | str = newstr + strleng; |
1080 | strsize = strleng + MB_LEN_MAX; |
1081 | } |
1082 | } |
1083 | else |
1084 | { |
1085 | *strptr = newstr; |
1086 | str = newstr + strleng; |
1087 | strsize *= 2; |
1088 | } |
1089 | } |
1090 | |
1091 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, |
1092 | &state); |
1093 | if (__glibc_unlikely (n == (size_t) -1)) |
1094 | encode_error (); |
1095 | |
1096 | assert (n <= MB_LEN_MAX); |
1097 | str += n; |
1098 | } |
1099 | #else |
1100 | /* This is easy. */ |
1101 | if (!(flags & SUPPRESS)) |
1102 | { |
1103 | *str++ = c; |
1104 | if ((flags & MALLOC) |
1105 | && (char *) str == *strptr + strsize) |
1106 | { |
1107 | /* Enlarge the buffer. */ |
1108 | str = (char *) realloc (*strptr, 2 * strsize); |
1109 | if (str == NULL) |
1110 | { |
1111 | /* Can't allocate that much. Last-ditch |
1112 | effort. */ |
1113 | str = (char *) realloc (*strptr, strsize + 1); |
1114 | if (str == NULL) |
1115 | { |
1116 | if (flags & POSIX_MALLOC) |
1117 | { |
1118 | done = EOF; |
1119 | goto errout; |
1120 | } |
1121 | /* We lose. Oh well. Terminate the |
1122 | string and stop converting, |
1123 | so at least we don't skip any input. */ |
1124 | ((char *) (*strptr))[strsize - 1] = '\0'; |
1125 | strptr = NULL; |
1126 | ++done; |
1127 | conv_error (); |
1128 | } |
1129 | else |
1130 | { |
1131 | *strptr = (char *) str; |
1132 | str += strsize; |
1133 | ++strsize; |
1134 | } |
1135 | } |
1136 | else |
1137 | { |
1138 | *strptr = (char *) str; |
1139 | str += strsize; |
1140 | strsize *= 2; |
1141 | } |
1142 | } |
1143 | } |
1144 | #endif |
1145 | } |
1146 | while ((width <= 0 || --width > 0) && inchar () != EOF); |
1147 | |
1148 | if (!(flags & SUPPRESS)) |
1149 | { |
1150 | #ifdef COMPILE_WSCANF |
1151 | /* We have to emit the code to get into the initial |
1152 | state. */ |
1153 | char buf[MB_LEN_MAX]; |
1154 | size_t n = __wcrtomb (buf, L'\0', &state); |
1155 | if (n > 0 && (flags & MALLOC) |
1156 | && str + n >= *strptr + strsize) |
1157 | { |
1158 | /* Enlarge the buffer. */ |
1159 | size_t strleng = str - *strptr; |
1160 | char *newstr; |
1161 | |
1162 | newstr = (char *) realloc (*strptr, strleng + n + 1); |
1163 | if (newstr == NULL) |
1164 | { |
1165 | if (flags & POSIX_MALLOC) |
1166 | { |
1167 | done = EOF; |
1168 | goto errout; |
1169 | } |
1170 | /* We lose. Oh well. Terminate the string |
1171 | and stop converting, so at least we don't |
1172 | skip any input. */ |
1173 | ((char *) (*strptr))[strleng] = '\0'; |
1174 | strptr = NULL; |
1175 | ++done; |
1176 | conv_error (); |
1177 | } |
1178 | else |
1179 | { |
1180 | *strptr = newstr; |
1181 | str = newstr + strleng; |
1182 | strsize = strleng + n + 1; |
1183 | } |
1184 | } |
1185 | |
1186 | str = __mempcpy (str, buf, n); |
1187 | #endif |
1188 | *str++ = '\0'; |
1189 | |
1190 | if ((flags & MALLOC) && str - *strptr != strsize) |
1191 | { |
1192 | char *cp = (char *) realloc (*strptr, str - *strptr); |
1193 | if (cp != NULL) |
1194 | *strptr = cp; |
1195 | } |
1196 | strptr = NULL; |
1197 | |
1198 | ++done; |
1199 | } |
1200 | break; |
1201 | } |
1202 | /* FALLTHROUGH */ |
1203 | |
1204 | case L_('S'): |
1205 | { |
1206 | #ifndef COMPILE_WSCANF |
1207 | mbstate_t cstate; |
1208 | #endif |
1209 | |
1210 | /* Wide character string. */ |
1211 | STRING_ARG (wstr, wchar_t, 100); |
1212 | |
1213 | c = inchar (); |
1214 | if (__builtin_expect (c == EOF, 0)) |
1215 | input_error (); |
1216 | |
1217 | #ifndef COMPILE_WSCANF |
1218 | memset (&cstate, '\0', sizeof (cstate)); |
1219 | #endif |
1220 | |
1221 | do |
1222 | { |
1223 | if (ISSPACE (c)) |
1224 | { |
1225 | ungetc_not_eof (c, s); |
1226 | break; |
1227 | } |
1228 | |
1229 | #ifdef COMPILE_WSCANF |
1230 | /* This is easy. */ |
1231 | if (!(flags & SUPPRESS)) |
1232 | { |
1233 | *wstr++ = c; |
1234 | if ((flags & MALLOC) |
1235 | && wstr == (wchar_t *) *strptr + strsize) |
1236 | { |
1237 | /* Enlarge the buffer. */ |
1238 | wstr = (wchar_t *) realloc (*strptr, |
1239 | (2 * strsize) |
1240 | * sizeof (wchar_t)); |
1241 | if (wstr == NULL) |
1242 | { |
1243 | /* Can't allocate that much. Last-ditch |
1244 | effort. */ |
1245 | wstr = (wchar_t *) realloc (*strptr, |
1246 | (strsize + 1) |
1247 | * sizeof (wchar_t)); |
1248 | if (wstr == NULL) |
1249 | { |
1250 | if (flags & POSIX_MALLOC) |
1251 | { |
1252 | done = EOF; |
1253 | goto errout; |
1254 | } |
1255 | /* We lose. Oh well. Terminate the string |
1256 | and stop converting, so at least we don't |
1257 | skip any input. */ |
1258 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
1259 | strptr = NULL; |
1260 | ++done; |
1261 | conv_error (); |
1262 | } |
1263 | else |
1264 | { |
1265 | *strptr = (char *) wstr; |
1266 | wstr += strsize; |
1267 | ++strsize; |
1268 | } |
1269 | } |
1270 | else |
1271 | { |
1272 | *strptr = (char *) wstr; |
1273 | wstr += strsize; |
1274 | strsize *= 2; |
1275 | } |
1276 | } |
1277 | } |
1278 | #else |
1279 | { |
1280 | char buf[1]; |
1281 | |
1282 | buf[0] = c; |
1283 | |
1284 | while (1) |
1285 | { |
1286 | size_t n; |
1287 | |
1288 | n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, |
1289 | buf, 1, &cstate); |
1290 | |
1291 | if (n == (size_t) -2) |
1292 | { |
1293 | /* Possibly correct character, just not enough |
1294 | input. */ |
1295 | if (__glibc_unlikely (inchar () == EOF)) |
1296 | encode_error (); |
1297 | |
1298 | buf[0] = c; |
1299 | continue; |
1300 | } |
1301 | |
1302 | if (__glibc_unlikely (n != 1)) |
1303 | encode_error (); |
1304 | |
1305 | /* We have a match. */ |
1306 | ++wstr; |
1307 | break; |
1308 | } |
1309 | |
1310 | if (!(flags & SUPPRESS) && (flags & MALLOC) |
1311 | && wstr == (wchar_t *) *strptr + strsize) |
1312 | { |
1313 | /* Enlarge the buffer. */ |
1314 | wstr = (wchar_t *) realloc (*strptr, |
1315 | (2 * strsize |
1316 | * sizeof (wchar_t))); |
1317 | if (wstr == NULL) |
1318 | { |
1319 | /* Can't allocate that much. Last-ditch effort. */ |
1320 | wstr = (wchar_t *) realloc (*strptr, |
1321 | ((strsize + 1) |
1322 | * sizeof (wchar_t))); |
1323 | if (wstr == NULL) |
1324 | { |
1325 | if (flags & POSIX_MALLOC) |
1326 | { |
1327 | done = EOF; |
1328 | goto errout; |
1329 | } |
1330 | /* We lose. Oh well. Terminate the |
1331 | string and stop converting, so at |
1332 | least we don't skip any input. */ |
1333 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
1334 | strptr = NULL; |
1335 | ++done; |
1336 | conv_error (); |
1337 | } |
1338 | else |
1339 | { |
1340 | *strptr = (char *) wstr; |
1341 | wstr += strsize; |
1342 | ++strsize; |
1343 | } |
1344 | } |
1345 | else |
1346 | { |
1347 | *strptr = (char *) wstr; |
1348 | wstr += strsize; |
1349 | strsize *= 2; |
1350 | } |
1351 | } |
1352 | } |
1353 | #endif |
1354 | } |
1355 | while ((width <= 0 || --width > 0) && inchar () != EOF); |
1356 | |
1357 | if (!(flags & SUPPRESS)) |
1358 | { |
1359 | *wstr++ = L'\0'; |
1360 | |
1361 | if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) |
1362 | { |
1363 | wchar_t *cp = (wchar_t *) realloc (*strptr, |
1364 | ((wstr |
1365 | - (wchar_t *) *strptr) |
1366 | * sizeof(wchar_t))); |
1367 | if (cp != NULL) |
1368 | *strptr = (char *) cp; |
1369 | } |
1370 | strptr = NULL; |
1371 | |
1372 | ++done; |
1373 | } |
1374 | } |
1375 | break; |
1376 | |
1377 | case L_('x'): /* Hexadecimal integer. */ |
1378 | case L_('X'): /* Ditto. */ |
1379 | base = 16; |
1380 | goto number; |
1381 | |
1382 | case L_('o'): /* Octal integer. */ |
1383 | base = 8; |
1384 | goto number; |
1385 | |
1386 | case L_('u'): /* Unsigned decimal integer. */ |
1387 | base = 10; |
1388 | goto number; |
1389 | |
1390 | case L_('d'): /* Signed decimal integer. */ |
1391 | base = 10; |
1392 | flags |= NUMBER_SIGNED; |
1393 | goto number; |
1394 | |
1395 | case L_('i'): /* Generic number. */ |
1396 | base = 0; |
1397 | flags |= NUMBER_SIGNED; |
1398 | |
1399 | number: |
1400 | c = inchar (); |
1401 | if (__glibc_unlikely (c == EOF)) |
1402 | input_error (); |
1403 | |
1404 | /* Check for a sign. */ |
1405 | if (c == L_('-') || c == L_('+')) |
1406 | { |
1407 | char_buffer_add (&charbuf, c); |
1408 | if (width > 0) |
1409 | --width; |
1410 | c = inchar (); |
1411 | } |
1412 | |
1413 | /* Look for a leading indication of base. */ |
1414 | if (width != 0 && c == L_('0')) |
1415 | { |
1416 | if (width > 0) |
1417 | --width; |
1418 | |
1419 | char_buffer_add (&charbuf, c); |
1420 | c = inchar (); |
1421 | |
1422 | if (width != 0 && TOLOWER (c) == L_('x')) |
1423 | { |
1424 | if (base == 0) |
1425 | base = 16; |
1426 | if (base == 16) |
1427 | { |
1428 | if (width > 0) |
1429 | --width; |
1430 | c = inchar (); |
1431 | } |
1432 | } |
1433 | else if (base == 0) |
1434 | base = 8; |
1435 | } |
1436 | |
1437 | if (base == 0) |
1438 | base = 10; |
1439 | |
1440 | if (base == 10 && __builtin_expect ((flags & I18N) != 0, 0)) |
1441 | { |
1442 | int from_level; |
1443 | int to_level; |
1444 | int level; |
1445 | #ifdef COMPILE_WSCANF |
1446 | const wchar_t *wcdigits[10]; |
1447 | const wchar_t *wcdigits_extended[10]; |
1448 | #else |
1449 | const char *mbdigits[10]; |
1450 | const char *mbdigits_extended[10]; |
1451 | #endif |
1452 | /* "to_inpunct" is a map from ASCII digits to their |
1453 | equivalent in locale. This is defined for locales |
1454 | which use an extra digits set. */ |
1455 | wctrans_t map = __wctrans ("to_inpunct" ); |
1456 | int n; |
1457 | |
1458 | from_level = 0; |
1459 | #ifdef COMPILE_WSCANF |
1460 | to_level = _NL_CURRENT_WORD (LC_CTYPE, |
1461 | _NL_CTYPE_INDIGITS_WC_LEN) - 1; |
1462 | #else |
1463 | to_level = (uint32_t) curctype->values[_NL_ITEM_INDEX (_NL_CTYPE_INDIGITS_MB_LEN)].word - 1; |
1464 | #endif |
1465 | |
1466 | /* Get the alternative digit forms if there are any. */ |
1467 | if (__glibc_unlikely (map != NULL)) |
1468 | { |
1469 | /* Adding new level for extra digits set in locale file. */ |
1470 | ++to_level; |
1471 | |
1472 | for (n = 0; n < 10; ++n) |
1473 | { |
1474 | #ifdef COMPILE_WSCANF |
1475 | wcdigits[n] = (const wchar_t *) |
1476 | _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); |
1477 | |
1478 | wchar_t *wc_extended = (wchar_t *) |
1479 | alloca ((to_level + 2) * sizeof (wchar_t)); |
1480 | __wmemcpy (wc_extended, wcdigits[n], to_level); |
1481 | wc_extended[to_level] = __towctrans (L'0' + n, map); |
1482 | wc_extended[to_level + 1] = '\0'; |
1483 | wcdigits_extended[n] = wc_extended; |
1484 | #else |
1485 | mbdigits[n] |
1486 | = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; |
1487 | |
1488 | /* Get the equivalent wide char in map. */ |
1489 | wint_t = __towctrans (L'0' + n, map); |
1490 | |
1491 | /* Convert it to multibyte representation. */ |
1492 | mbstate_t state; |
1493 | memset (&state, '\0', sizeof (state)); |
1494 | |
1495 | char [MB_LEN_MAX]; |
1496 | size_t mblen |
1497 | = __wcrtomb (extra_mbdigit, extra_wcdigit, &state); |
1498 | |
1499 | if (mblen == (size_t) -1) |
1500 | { |
1501 | /* Ignore this new level. */ |
1502 | map = NULL; |
1503 | break; |
1504 | } |
1505 | |
1506 | /* Calculate the length of mbdigits[n]. */ |
1507 | const char *last_char = mbdigits[n]; |
1508 | for (level = 0; level < to_level; ++level) |
1509 | last_char = strchr (last_char, '\0') + 1; |
1510 | |
1511 | size_t mbdigits_len = last_char - mbdigits[n]; |
1512 | |
1513 | /* Allocate memory for extended multibyte digit. */ |
1514 | char *mb_extended; |
1515 | mb_extended = (char *) alloca (mbdigits_len + mblen + 1); |
1516 | |
1517 | /* And get the mbdigits + extra_digit string. */ |
1518 | *(char *) __mempcpy (__mempcpy (mb_extended, mbdigits[n], |
1519 | mbdigits_len), |
1520 | extra_mbdigit, mblen) = '\0'; |
1521 | mbdigits_extended[n] = mb_extended; |
1522 | #endif |
1523 | } |
1524 | } |
1525 | |
1526 | /* Read the number into workspace. */ |
1527 | while (c != EOF && width != 0) |
1528 | { |
1529 | /* In this round we get the pointer to the digit strings |
1530 | and also perform the first round of comparisons. */ |
1531 | for (n = 0; n < 10; ++n) |
1532 | { |
1533 | /* Get the string for the digits with value N. */ |
1534 | #ifdef COMPILE_WSCANF |
1535 | |
1536 | /* wcdigits_extended[] is fully set in the loop |
1537 | above, but the test for "map != NULL" is done |
1538 | inside the loop here and outside the loop there. */ |
1539 | DIAG_PUSH_NEEDS_COMMENT; |
1540 | DIAG_IGNORE_NEEDS_COMMENT (4.7, "-Wmaybe-uninitialized" ); |
1541 | |
1542 | if (__glibc_unlikely (map != NULL)) |
1543 | wcdigits[n] = wcdigits_extended[n]; |
1544 | else |
1545 | wcdigits[n] = (const wchar_t *) |
1546 | _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); |
1547 | wcdigits[n] += from_level; |
1548 | |
1549 | DIAG_POP_NEEDS_COMMENT; |
1550 | |
1551 | if (c == (wint_t) *wcdigits[n]) |
1552 | { |
1553 | to_level = from_level; |
1554 | break; |
1555 | } |
1556 | |
1557 | /* Advance the pointer to the next string. */ |
1558 | ++wcdigits[n]; |
1559 | #else |
1560 | const char *cmpp; |
1561 | int avail = width > 0 ? width : INT_MAX; |
1562 | |
1563 | if (__glibc_unlikely (map != NULL)) |
1564 | mbdigits[n] = mbdigits_extended[n]; |
1565 | else |
1566 | mbdigits[n] |
1567 | = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; |
1568 | |
1569 | for (level = 0; level < from_level; level++) |
1570 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; |
1571 | |
1572 | cmpp = mbdigits[n]; |
1573 | while ((unsigned char) *cmpp == c && avail >= 0) |
1574 | { |
1575 | if (*++cmpp == '\0') |
1576 | break; |
1577 | else |
1578 | { |
1579 | if (avail == 0 || inchar () == EOF) |
1580 | break; |
1581 | --avail; |
1582 | } |
1583 | } |
1584 | |
1585 | if (*cmpp == '\0') |
1586 | { |
1587 | if (width > 0) |
1588 | width = avail; |
1589 | to_level = from_level; |
1590 | break; |
1591 | } |
1592 | |
1593 | /* We are pushing all read characters back. */ |
1594 | if (cmpp > mbdigits[n]) |
1595 | { |
1596 | ungetc (c, s); |
1597 | while (--cmpp > mbdigits[n]) |
1598 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1599 | c = (unsigned char) *cmpp; |
1600 | } |
1601 | |
1602 | /* Advance the pointer to the next string. */ |
1603 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; |
1604 | #endif |
1605 | } |
1606 | |
1607 | if (n == 10) |
1608 | { |
1609 | /* Have not yet found the digit. */ |
1610 | for (level = from_level + 1; level <= to_level; ++level) |
1611 | { |
1612 | /* Search all ten digits of this level. */ |
1613 | for (n = 0; n < 10; ++n) |
1614 | { |
1615 | #ifdef COMPILE_WSCANF |
1616 | if (c == (wint_t) *wcdigits[n]) |
1617 | break; |
1618 | |
1619 | /* Advance the pointer to the next string. */ |
1620 | ++wcdigits[n]; |
1621 | #else |
1622 | const char *cmpp; |
1623 | int avail = width > 0 ? width : INT_MAX; |
1624 | |
1625 | cmpp = mbdigits[n]; |
1626 | while ((unsigned char) *cmpp == c && avail >= 0) |
1627 | { |
1628 | if (*++cmpp == '\0') |
1629 | break; |
1630 | else |
1631 | { |
1632 | if (avail == 0 || inchar () == EOF) |
1633 | break; |
1634 | --avail; |
1635 | } |
1636 | } |
1637 | |
1638 | if (*cmpp == '\0') |
1639 | { |
1640 | if (width > 0) |
1641 | width = avail; |
1642 | break; |
1643 | } |
1644 | |
1645 | /* We are pushing all read characters back. */ |
1646 | if (cmpp > mbdigits[n]) |
1647 | { |
1648 | ungetc (c, s); |
1649 | while (--cmpp > mbdigits[n]) |
1650 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1651 | c = (unsigned char) *cmpp; |
1652 | } |
1653 | |
1654 | /* Advance the pointer to the next string. */ |
1655 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; |
1656 | #endif |
1657 | } |
1658 | |
1659 | if (n < 10) |
1660 | { |
1661 | /* Found it. */ |
1662 | from_level = level; |
1663 | to_level = level; |
1664 | break; |
1665 | } |
1666 | } |
1667 | } |
1668 | |
1669 | if (n < 10) |
1670 | c = L_('0') + n; |
1671 | else if (flags & GROUP) |
1672 | { |
1673 | /* Try matching against the thousands separator. */ |
1674 | #ifdef COMPILE_WSCANF |
1675 | if (c != thousands) |
1676 | break; |
1677 | #else |
1678 | const char *cmpp = thousands; |
1679 | int avail = width > 0 ? width : INT_MAX; |
1680 | |
1681 | while ((unsigned char) *cmpp == c && avail >= 0) |
1682 | { |
1683 | char_buffer_add (&charbuf, c); |
1684 | if (*++cmpp == '\0') |
1685 | break; |
1686 | else |
1687 | { |
1688 | if (avail == 0 || inchar () == EOF) |
1689 | break; |
1690 | --avail; |
1691 | } |
1692 | } |
1693 | |
1694 | if (char_buffer_error (&charbuf)) |
1695 | { |
1696 | __set_errno (ENOMEM); |
1697 | done = EOF; |
1698 | goto errout; |
1699 | } |
1700 | |
1701 | if (*cmpp != '\0') |
1702 | { |
1703 | /* We are pushing all read characters back. */ |
1704 | if (cmpp > thousands) |
1705 | { |
1706 | charbuf.current -= cmpp - thousands; |
1707 | ungetc (c, s); |
1708 | while (--cmpp > thousands) |
1709 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1710 | c = (unsigned char) *cmpp; |
1711 | } |
1712 | break; |
1713 | } |
1714 | |
1715 | if (width > 0) |
1716 | width = avail; |
1717 | |
1718 | /* The last thousands character will be added back by |
1719 | the char_buffer_add below. */ |
1720 | --charbuf.current; |
1721 | #endif |
1722 | } |
1723 | else |
1724 | break; |
1725 | |
1726 | char_buffer_add (&charbuf, c); |
1727 | if (width > 0) |
1728 | --width; |
1729 | |
1730 | c = inchar (); |
1731 | } |
1732 | } |
1733 | else |
1734 | /* Read the number into workspace. */ |
1735 | while (c != EOF && width != 0) |
1736 | { |
1737 | if (base == 16) |
1738 | { |
1739 | if (!ISXDIGIT (c)) |
1740 | break; |
1741 | } |
1742 | else if (!ISDIGIT (c) || (int) (c - L_('0')) >= base) |
1743 | { |
1744 | if (base == 10 && (flags & GROUP)) |
1745 | { |
1746 | /* Try matching against the thousands separator. */ |
1747 | #ifdef COMPILE_WSCANF |
1748 | if (c != thousands) |
1749 | break; |
1750 | #else |
1751 | const char *cmpp = thousands; |
1752 | int avail = width > 0 ? width : INT_MAX; |
1753 | |
1754 | while ((unsigned char) *cmpp == c && avail >= 0) |
1755 | { |
1756 | char_buffer_add (&charbuf, c); |
1757 | if (*++cmpp == '\0') |
1758 | break; |
1759 | else |
1760 | { |
1761 | if (avail == 0 || inchar () == EOF) |
1762 | break; |
1763 | --avail; |
1764 | } |
1765 | } |
1766 | |
1767 | if (char_buffer_error (&charbuf)) |
1768 | { |
1769 | __set_errno (ENOMEM); |
1770 | done = EOF; |
1771 | goto errout; |
1772 | } |
1773 | |
1774 | if (*cmpp != '\0') |
1775 | { |
1776 | /* We are pushing all read characters back. */ |
1777 | if (cmpp > thousands) |
1778 | { |
1779 | charbuf.current -= cmpp - thousands; |
1780 | ungetc (c, s); |
1781 | while (--cmpp > thousands) |
1782 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1783 | c = (unsigned char) *cmpp; |
1784 | } |
1785 | break; |
1786 | } |
1787 | |
1788 | if (width > 0) |
1789 | width = avail; |
1790 | |
1791 | /* The last thousands character will be added back by |
1792 | the char_buffer_add below. */ |
1793 | --charbuf.current; |
1794 | #endif |
1795 | } |
1796 | else |
1797 | break; |
1798 | } |
1799 | char_buffer_add (&charbuf, c); |
1800 | if (width > 0) |
1801 | --width; |
1802 | |
1803 | c = inchar (); |
1804 | } |
1805 | |
1806 | if (char_buffer_error (&charbuf)) |
1807 | { |
1808 | __set_errno (ENOMEM); |
1809 | done = EOF; |
1810 | goto errout; |
1811 | } |
1812 | |
1813 | if (char_buffer_size (&charbuf) == 0 |
1814 | || (char_buffer_size (&charbuf) == 1 |
1815 | && (char_buffer_start (&charbuf)[0] == L_('+') |
1816 | || char_buffer_start (&charbuf)[0] == L_('-')))) |
1817 | { |
1818 | /* There was no number. If we are supposed to read a pointer |
1819 | we must recognize "(nil)" as well. */ |
1820 | if (__builtin_expect (char_buffer_size (&charbuf) == 0 |
1821 | && (flags & READ_POINTER) |
1822 | && (width < 0 || width >= 5) |
1823 | && c == '(' |
1824 | && TOLOWER (inchar ()) == L_('n') |
1825 | && TOLOWER (inchar ()) == L_('i') |
1826 | && TOLOWER (inchar ()) == L_('l') |
1827 | && inchar () == L_(')'), 1)) |
1828 | /* We must produce the value of a NULL pointer. A single |
1829 | '0' digit is enough. */ |
1830 | char_buffer_add (&charbuf, L_('0')); |
1831 | else |
1832 | { |
1833 | /* The last read character is not part of the number |
1834 | anymore. */ |
1835 | ungetc (c, s); |
1836 | |
1837 | conv_error (); |
1838 | } |
1839 | } |
1840 | else |
1841 | /* The just read character is not part of the number anymore. */ |
1842 | ungetc (c, s); |
1843 | |
1844 | /* Convert the number. */ |
1845 | char_buffer_add (&charbuf, L_('\0')); |
1846 | if (char_buffer_error (&charbuf)) |
1847 | { |
1848 | __set_errno (ENOMEM); |
1849 | done = EOF; |
1850 | goto errout; |
1851 | } |
1852 | if (need_longlong && (flags & LONGDBL)) |
1853 | { |
1854 | if (flags & NUMBER_SIGNED) |
1855 | num.q = __strtoll_internal |
1856 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1857 | else |
1858 | num.uq = __strtoull_internal |
1859 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1860 | } |
1861 | else |
1862 | { |
1863 | if (flags & NUMBER_SIGNED) |
1864 | num.l = __strtol_internal |
1865 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1866 | else |
1867 | num.ul = __strtoul_internal |
1868 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1869 | } |
1870 | if (__glibc_unlikely (char_buffer_start (&charbuf) == tw)) |
1871 | conv_error (); |
1872 | |
1873 | if (!(flags & SUPPRESS)) |
1874 | { |
1875 | if (flags & NUMBER_SIGNED) |
1876 | { |
1877 | if (need_longlong && (flags & LONGDBL)) |
1878 | *ARG (LONGLONG int *) = num.q; |
1879 | else if (need_long && (flags & LONG)) |
1880 | *ARG (long int *) = num.l; |
1881 | else if (flags & SHORT) |
1882 | *ARG (short int *) = (short int) num.l; |
1883 | else if (!(flags & CHAR)) |
1884 | *ARG (int *) = (int) num.l; |
1885 | else |
1886 | *ARG (signed char *) = (signed char) num.ul; |
1887 | } |
1888 | else |
1889 | { |
1890 | if (need_longlong && (flags & LONGDBL)) |
1891 | *ARG (unsigned LONGLONG int *) = num.uq; |
1892 | else if (need_long && (flags & LONG)) |
1893 | *ARG (unsigned long int *) = num.ul; |
1894 | else if (flags & SHORT) |
1895 | *ARG (unsigned short int *) |
1896 | = (unsigned short int) num.ul; |
1897 | else if (!(flags & CHAR)) |
1898 | *ARG (unsigned int *) = (unsigned int) num.ul; |
1899 | else |
1900 | *ARG (unsigned char *) = (unsigned char) num.ul; |
1901 | } |
1902 | ++done; |
1903 | } |
1904 | break; |
1905 | |
1906 | case L_('e'): /* Floating-point numbers. */ |
1907 | case L_('E'): |
1908 | case L_('f'): |
1909 | case L_('F'): |
1910 | case L_('g'): |
1911 | case L_('G'): |
1912 | case L_('a'): |
1913 | case L_('A'): |
1914 | c = inchar (); |
1915 | if (width > 0) |
1916 | --width; |
1917 | if (__glibc_unlikely (c == EOF)) |
1918 | input_error (); |
1919 | |
1920 | got_digit = got_dot = got_e = 0; |
1921 | |
1922 | /* Check for a sign. */ |
1923 | if (c == L_('-') || c == L_('+')) |
1924 | { |
1925 | negative = c == L_('-'); |
1926 | if (__glibc_unlikely (width == 0 || inchar () == EOF)) |
1927 | /* EOF is only an input error before we read any chars. */ |
1928 | conv_error (); |
1929 | if (width > 0) |
1930 | --width; |
1931 | } |
1932 | else |
1933 | negative = 0; |
1934 | |
1935 | /* Take care for the special arguments "nan" and "inf". */ |
1936 | if (TOLOWER (c) == L_('n')) |
1937 | { |
1938 | /* Maybe "nan". */ |
1939 | char_buffer_add (&charbuf, c); |
1940 | if (__builtin_expect (width == 0 |
1941 | || inchar () == EOF |
1942 | || TOLOWER (c) != L_('a'), 0)) |
1943 | conv_error (); |
1944 | if (width > 0) |
1945 | --width; |
1946 | char_buffer_add (&charbuf, c); |
1947 | if (__builtin_expect (width == 0 |
1948 | || inchar () == EOF |
1949 | || TOLOWER (c) != L_('n'), 0)) |
1950 | conv_error (); |
1951 | if (width > 0) |
1952 | --width; |
1953 | char_buffer_add (&charbuf, c); |
1954 | /* It is "nan". */ |
1955 | goto scan_float; |
1956 | } |
1957 | else if (TOLOWER (c) == L_('i')) |
1958 | { |
1959 | /* Maybe "inf" or "infinity". */ |
1960 | char_buffer_add (&charbuf, c); |
1961 | if (__builtin_expect (width == 0 |
1962 | || inchar () == EOF |
1963 | || TOLOWER (c) != L_('n'), 0)) |
1964 | conv_error (); |
1965 | if (width > 0) |
1966 | --width; |
1967 | char_buffer_add (&charbuf, c); |
1968 | if (__builtin_expect (width == 0 |
1969 | || inchar () == EOF |
1970 | || TOLOWER (c) != L_('f'), 0)) |
1971 | conv_error (); |
1972 | if (width > 0) |
1973 | --width; |
1974 | char_buffer_add (&charbuf, c); |
1975 | /* It is as least "inf". */ |
1976 | if (width != 0 && inchar () != EOF) |
1977 | { |
1978 | if (TOLOWER (c) == L_('i')) |
1979 | { |
1980 | if (width > 0) |
1981 | --width; |
1982 | /* Now we have to read the rest as well. */ |
1983 | char_buffer_add (&charbuf, c); |
1984 | if (__builtin_expect (width == 0 |
1985 | || inchar () == EOF |
1986 | || TOLOWER (c) != L_('n'), 0)) |
1987 | conv_error (); |
1988 | if (width > 0) |
1989 | --width; |
1990 | char_buffer_add (&charbuf, c); |
1991 | if (__builtin_expect (width == 0 |
1992 | || inchar () == EOF |
1993 | || TOLOWER (c) != L_('i'), 0)) |
1994 | conv_error (); |
1995 | if (width > 0) |
1996 | --width; |
1997 | char_buffer_add (&charbuf, c); |
1998 | if (__builtin_expect (width == 0 |
1999 | || inchar () == EOF |
2000 | || TOLOWER (c) != L_('t'), 0)) |
2001 | conv_error (); |
2002 | if (width > 0) |
2003 | --width; |
2004 | char_buffer_add (&charbuf, c); |
2005 | if (__builtin_expect (width == 0 |
2006 | || inchar () == EOF |
2007 | || TOLOWER (c) != L_('y'), 0)) |
2008 | conv_error (); |
2009 | if (width > 0) |
2010 | --width; |
2011 | char_buffer_add (&charbuf, c); |
2012 | } |
2013 | else |
2014 | /* Never mind. */ |
2015 | ungetc (c, s); |
2016 | } |
2017 | goto scan_float; |
2018 | } |
2019 | |
2020 | exp_char = L_('e'); |
2021 | if (width != 0 && c == L_('0')) |
2022 | { |
2023 | char_buffer_add (&charbuf, c); |
2024 | c = inchar (); |
2025 | if (width > 0) |
2026 | --width; |
2027 | if (width != 0 && TOLOWER (c) == L_('x')) |
2028 | { |
2029 | /* It is a number in hexadecimal format. */ |
2030 | char_buffer_add (&charbuf, c); |
2031 | |
2032 | flags |= HEXA_FLOAT; |
2033 | exp_char = L_('p'); |
2034 | |
2035 | /* Grouping is not allowed. */ |
2036 | flags &= ~GROUP; |
2037 | c = inchar (); |
2038 | if (width > 0) |
2039 | --width; |
2040 | } |
2041 | else |
2042 | got_digit = 1; |
2043 | } |
2044 | |
2045 | while (1) |
2046 | { |
2047 | if (char_buffer_error (&charbuf)) |
2048 | { |
2049 | __set_errno (ENOMEM); |
2050 | done = EOF; |
2051 | goto errout; |
2052 | } |
2053 | if (ISDIGIT (c)) |
2054 | { |
2055 | char_buffer_add (&charbuf, c); |
2056 | got_digit = 1; |
2057 | } |
2058 | else if (!got_e && (flags & HEXA_FLOAT) && ISXDIGIT (c)) |
2059 | { |
2060 | char_buffer_add (&charbuf, c); |
2061 | got_digit = 1; |
2062 | } |
2063 | else if (got_e && charbuf.current[-1] == exp_char |
2064 | && (c == L_('-') || c == L_('+'))) |
2065 | char_buffer_add (&charbuf, c); |
2066 | else if (got_digit && !got_e |
2067 | && (CHAR_T) TOLOWER (c) == exp_char) |
2068 | { |
2069 | char_buffer_add (&charbuf, exp_char); |
2070 | got_e = got_dot = 1; |
2071 | } |
2072 | else |
2073 | { |
2074 | #ifdef COMPILE_WSCANF |
2075 | if (! got_dot && c == decimal) |
2076 | { |
2077 | char_buffer_add (&charbuf, c); |
2078 | got_dot = 1; |
2079 | } |
2080 | else if ((flags & GROUP) != 0 && ! got_dot && c == thousands) |
2081 | char_buffer_add (&charbuf, c); |
2082 | else |
2083 | { |
2084 | /* The last read character is not part of the number |
2085 | anymore. */ |
2086 | ungetc (c, s); |
2087 | break; |
2088 | } |
2089 | #else |
2090 | const char *cmpp = decimal; |
2091 | int avail = width > 0 ? width : INT_MAX; |
2092 | |
2093 | if (! got_dot) |
2094 | { |
2095 | while ((unsigned char) *cmpp == c && avail >= 0) |
2096 | if (*++cmpp == '\0') |
2097 | break; |
2098 | else |
2099 | { |
2100 | if (avail == 0 || inchar () == EOF) |
2101 | break; |
2102 | --avail; |
2103 | } |
2104 | } |
2105 | |
2106 | if (*cmpp == '\0') |
2107 | { |
2108 | /* Add all the characters. */ |
2109 | for (cmpp = decimal; *cmpp != '\0'; ++cmpp) |
2110 | char_buffer_add (&charbuf, (unsigned char) *cmpp); |
2111 | if (width > 0) |
2112 | width = avail; |
2113 | got_dot = 1; |
2114 | } |
2115 | else |
2116 | { |
2117 | /* Figure out whether it is a thousands separator. |
2118 | There is one problem: we possibly read more than |
2119 | one character. We cannot push them back but since |
2120 | we know that parts of the `decimal' string matched, |
2121 | we can compare against it. */ |
2122 | const char *cmp2p = thousands; |
2123 | |
2124 | if ((flags & GROUP) != 0 && ! got_dot) |
2125 | { |
2126 | while (cmp2p - thousands < cmpp - decimal |
2127 | && *cmp2p == decimal[cmp2p - thousands]) |
2128 | ++cmp2p; |
2129 | if (cmp2p - thousands == cmpp - decimal) |
2130 | { |
2131 | while ((unsigned char) *cmp2p == c && avail >= 0) |
2132 | if (*++cmp2p == '\0') |
2133 | break; |
2134 | else |
2135 | { |
2136 | if (avail == 0 || inchar () == EOF) |
2137 | break; |
2138 | --avail; |
2139 | } |
2140 | } |
2141 | } |
2142 | |
2143 | if (cmp2p != NULL && *cmp2p == '\0') |
2144 | { |
2145 | /* Add all the characters. */ |
2146 | for (cmpp = thousands; *cmpp != '\0'; ++cmpp) |
2147 | char_buffer_add (&charbuf, (unsigned char) *cmpp); |
2148 | if (width > 0) |
2149 | width = avail; |
2150 | } |
2151 | else |
2152 | { |
2153 | /* The last read character is not part of the number |
2154 | anymore. */ |
2155 | ungetc (c, s); |
2156 | break; |
2157 | } |
2158 | } |
2159 | #endif |
2160 | } |
2161 | |
2162 | if (width == 0 || inchar () == EOF) |
2163 | break; |
2164 | |
2165 | if (width > 0) |
2166 | --width; |
2167 | } |
2168 | |
2169 | if (char_buffer_error (&charbuf)) |
2170 | { |
2171 | __set_errno (ENOMEM); |
2172 | done = EOF; |
2173 | goto errout; |
2174 | } |
2175 | |
2176 | wctrans_t map; |
2177 | if (__builtin_expect ((flags & I18N) != 0, 0) |
2178 | /* Hexadecimal floats make no sense, fixing localized |
2179 | digits with ASCII letters. */ |
2180 | && !(flags & HEXA_FLOAT) |
2181 | /* Minimum requirement. */ |
2182 | && (char_buffer_size (&charbuf) == 0 || got_dot) |
2183 | && (map = __wctrans ("to_inpunct" )) != NULL) |
2184 | { |
2185 | /* Reget the first character. */ |
2186 | inchar (); |
2187 | |
2188 | /* Localized digits, decimal points, and thousands |
2189 | separator. */ |
2190 | wint_t wcdigits[12]; |
2191 | |
2192 | /* First get decimal equivalent to check if we read it |
2193 | or not. */ |
2194 | wcdigits[11] = __towctrans (L'.', map); |
2195 | |
2196 | /* If we have not read any character or have just read |
2197 | locale decimal point which matches the decimal point |
2198 | for localized FP numbers, then we may have localized |
2199 | digits. Note, we test GOT_DOT above. */ |
2200 | #ifdef COMPILE_WSCANF |
2201 | if (char_buffer_size (&charbuf) == 0 |
2202 | || (char_buffer_size (&charbuf) == 1 |
2203 | && wcdigits[11] == decimal)) |
2204 | #else |
2205 | char mbdigits[12][MB_LEN_MAX + 1]; |
2206 | |
2207 | mbstate_t state; |
2208 | memset (&state, '\0', sizeof (state)); |
2209 | |
2210 | bool match_so_far = char_buffer_size (&charbuf) == 0; |
2211 | size_t mblen = __wcrtomb (mbdigits[11], wcdigits[11], &state); |
2212 | if (mblen != (size_t) -1) |
2213 | { |
2214 | mbdigits[11][mblen] = '\0'; |
2215 | match_so_far |= |
2216 | (char_buffer_size (&charbuf) == strlen (decimal) |
2217 | && strcmp (decimal, mbdigits[11]) == 0); |
2218 | } |
2219 | else |
2220 | { |
2221 | size_t decimal_len = strlen (decimal); |
2222 | /* This should always be the case but the data comes |
2223 | from a file. */ |
2224 | if (decimal_len <= MB_LEN_MAX) |
2225 | { |
2226 | match_so_far |= char_buffer_size (&charbuf) == decimal_len; |
2227 | memcpy (mbdigits[11], decimal, decimal_len + 1); |
2228 | } |
2229 | else |
2230 | match_so_far = false; |
2231 | } |
2232 | |
2233 | if (match_so_far) |
2234 | #endif |
2235 | { |
2236 | bool have_locthousands = (flags & GROUP) != 0; |
2237 | |
2238 | /* Now get the digits and the thousands-sep equivalents. */ |
2239 | for (int n = 0; n < 11; ++n) |
2240 | { |
2241 | if (n < 10) |
2242 | wcdigits[n] = __towctrans (L'0' + n, map); |
2243 | else if (n == 10) |
2244 | { |
2245 | wcdigits[10] = __towctrans (L',', map); |
2246 | have_locthousands &= wcdigits[10] != L'\0'; |
2247 | } |
2248 | |
2249 | #ifndef COMPILE_WSCANF |
2250 | memset (&state, '\0', sizeof (state)); |
2251 | |
2252 | size_t mblen = __wcrtomb (mbdigits[n], wcdigits[n], |
2253 | &state); |
2254 | if (mblen == (size_t) -1) |
2255 | { |
2256 | if (n == 10) |
2257 | { |
2258 | if (have_locthousands) |
2259 | { |
2260 | size_t thousands_len = strlen (thousands); |
2261 | if (thousands_len <= MB_LEN_MAX) |
2262 | memcpy (mbdigits[10], thousands, |
2263 | thousands_len + 1); |
2264 | else |
2265 | have_locthousands = false; |
2266 | } |
2267 | } |
2268 | else |
2269 | /* Ignore checking against localized digits. */ |
2270 | goto no_i18nflt; |
2271 | } |
2272 | else |
2273 | mbdigits[n][mblen] = '\0'; |
2274 | #endif |
2275 | } |
2276 | |
2277 | /* Start checking against localized digits, if |
2278 | conversion is done correctly. */ |
2279 | while (1) |
2280 | { |
2281 | if (char_buffer_error (&charbuf)) |
2282 | { |
2283 | __set_errno (ENOMEM); |
2284 | done = EOF; |
2285 | goto errout; |
2286 | } |
2287 | if (got_e && charbuf.current[-1] == exp_char |
2288 | && (c == L_('-') || c == L_('+'))) |
2289 | char_buffer_add (&charbuf, c); |
2290 | else if (char_buffer_size (&charbuf) > 0 && !got_e |
2291 | && (CHAR_T) TOLOWER (c) == exp_char) |
2292 | { |
2293 | char_buffer_add (&charbuf, exp_char); |
2294 | got_e = got_dot = 1; |
2295 | } |
2296 | else |
2297 | { |
2298 | /* Check against localized digits, decimal point, |
2299 | and thousands separator. */ |
2300 | int n; |
2301 | for (n = 0; n < 12; ++n) |
2302 | { |
2303 | #ifdef COMPILE_WSCANF |
2304 | if (c == wcdigits[n]) |
2305 | { |
2306 | if (n < 10) |
2307 | char_buffer_add (&charbuf, L_('0') + n); |
2308 | else if (n == 11 && !got_dot) |
2309 | { |
2310 | char_buffer_add (&charbuf, decimal); |
2311 | got_dot = 1; |
2312 | } |
2313 | else if (n == 10 && have_locthousands |
2314 | && ! got_dot) |
2315 | char_buffer_add (&charbuf, thousands); |
2316 | else |
2317 | /* The last read character is not part |
2318 | of the number anymore. */ |
2319 | n = 12; |
2320 | |
2321 | break; |
2322 | } |
2323 | #else |
2324 | const char *cmpp = mbdigits[n]; |
2325 | int avail = width > 0 ? width : INT_MAX; |
2326 | |
2327 | while ((unsigned char) *cmpp == c && avail >= 0) |
2328 | if (*++cmpp == '\0') |
2329 | break; |
2330 | else |
2331 | { |
2332 | if (avail == 0 || inchar () == EOF) |
2333 | break; |
2334 | --avail; |
2335 | } |
2336 | if (*cmpp == '\0') |
2337 | { |
2338 | if (width > 0) |
2339 | width = avail; |
2340 | |
2341 | if (n < 10) |
2342 | char_buffer_add (&charbuf, L_('0') + n); |
2343 | else if (n == 11 && !got_dot) |
2344 | { |
2345 | /* Add all the characters. */ |
2346 | for (cmpp = decimal; *cmpp != '\0'; |
2347 | ++cmpp) |
2348 | char_buffer_add (&charbuf, |
2349 | (unsigned char) *cmpp); |
2350 | |
2351 | got_dot = 1; |
2352 | } |
2353 | else if (n == 10 && (flags & GROUP) != 0 |
2354 | && ! got_dot) |
2355 | { |
2356 | /* Add all the characters. */ |
2357 | for (cmpp = thousands; *cmpp != '\0'; |
2358 | ++cmpp) |
2359 | char_buffer_add (&charbuf, |
2360 | (unsigned char) *cmpp); |
2361 | } |
2362 | else |
2363 | /* The last read character is not part |
2364 | of the number anymore. */ |
2365 | n = 12; |
2366 | |
2367 | break; |
2368 | } |
2369 | |
2370 | /* We are pushing all read characters back. */ |
2371 | if (cmpp > mbdigits[n]) |
2372 | { |
2373 | ungetc (c, s); |
2374 | while (--cmpp > mbdigits[n]) |
2375 | ungetc_not_eof ((unsigned char) *cmpp, s); |
2376 | c = (unsigned char) *cmpp; |
2377 | } |
2378 | #endif |
2379 | } |
2380 | |
2381 | if (n >= 12) |
2382 | { |
2383 | /* The last read character is not part |
2384 | of the number anymore. */ |
2385 | ungetc (c, s); |
2386 | break; |
2387 | } |
2388 | } |
2389 | |
2390 | if (width == 0 || inchar () == EOF) |
2391 | break; |
2392 | |
2393 | if (width > 0) |
2394 | --width; |
2395 | } |
2396 | } |
2397 | |
2398 | #ifndef COMPILE_WSCANF |
2399 | no_i18nflt: |
2400 | ; |
2401 | #endif |
2402 | } |
2403 | |
2404 | if (char_buffer_error (&charbuf)) |
2405 | { |
2406 | __set_errno (ENOMEM); |
2407 | done = EOF; |
2408 | goto errout; |
2409 | } |
2410 | |
2411 | /* Have we read any character? If we try to read a number |
2412 | in hexadecimal notation and we have read only the `0x' |
2413 | prefix this is an error. */ |
2414 | if (__glibc_unlikely (char_buffer_size (&charbuf) == 0 |
2415 | || ((flags & HEXA_FLOAT) |
2416 | && char_buffer_size (&charbuf) == 2))) |
2417 | conv_error (); |
2418 | |
2419 | scan_float: |
2420 | /* Convert the number. */ |
2421 | char_buffer_add (&charbuf, L_('\0')); |
2422 | if (char_buffer_error (&charbuf)) |
2423 | { |
2424 | __set_errno (ENOMEM); |
2425 | done = EOF; |
2426 | goto errout; |
2427 | } |
2428 | if ((flags & LONGDBL) && !__ldbl_is_dbl) |
2429 | { |
2430 | long double d = __strtold_internal |
2431 | (char_buffer_start (&charbuf), &tw, flags & GROUP); |
2432 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) |
2433 | *ARG (long double *) = negative ? -d : d; |
2434 | } |
2435 | else if (flags & (LONG | LONGDBL)) |
2436 | { |
2437 | double d = __strtod_internal |
2438 | (char_buffer_start (&charbuf), &tw, flags & GROUP); |
2439 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) |
2440 | *ARG (double *) = negative ? -d : d; |
2441 | } |
2442 | else |
2443 | { |
2444 | float d = __strtof_internal |
2445 | (char_buffer_start (&charbuf), &tw, flags & GROUP); |
2446 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) |
2447 | *ARG (float *) = negative ? -d : d; |
2448 | } |
2449 | |
2450 | if (__glibc_unlikely (tw == char_buffer_start (&charbuf))) |
2451 | conv_error (); |
2452 | |
2453 | if (!(flags & SUPPRESS)) |
2454 | ++done; |
2455 | break; |
2456 | |
2457 | case L_('['): /* Character class. */ |
2458 | if (flags & LONG) |
2459 | STRING_ARG (wstr, wchar_t, 100); |
2460 | else |
2461 | STRING_ARG (str, char, 100); |
2462 | |
2463 | if (*f == L_('^')) |
2464 | { |
2465 | ++f; |
2466 | not_in = 1; |
2467 | } |
2468 | else |
2469 | not_in = 0; |
2470 | |
2471 | if (width < 0) |
2472 | /* There is no width given so there is also no limit on the |
2473 | number of characters we read. Therefore we set width to |
2474 | a very high value to make the algorithm easier. */ |
2475 | width = INT_MAX; |
2476 | |
2477 | #ifdef COMPILE_WSCANF |
2478 | /* Find the beginning and the end of the scanlist. We are not |
2479 | creating a lookup table since it would have to be too large. |
2480 | Instead we search each time through the string. This is not |
2481 | a constant lookup time but who uses this feature deserves to |
2482 | be punished. */ |
2483 | tw = (wchar_t *) f; /* Marks the beginning. */ |
2484 | |
2485 | if (*f == L']') |
2486 | ++f; |
2487 | |
2488 | while ((fc = *f++) != L'\0' && fc != L']'); |
2489 | |
2490 | if (__glibc_unlikely (fc == L'\0')) |
2491 | conv_error (); |
2492 | wchar_t *twend = (wchar_t *) f - 1; |
2493 | #else |
2494 | /* Fill WP with byte flags indexed by character. |
2495 | We will use this flag map for matching input characters. */ |
2496 | if (!scratch_buffer_set_array_size |
2497 | (&charbuf.scratch, UCHAR_MAX + 1, 1)) |
2498 | { |
2499 | done = EOF; |
2500 | goto errout; |
2501 | } |
2502 | memset (charbuf.scratch.data, '\0', UCHAR_MAX + 1); |
2503 | |
2504 | fc = *f; |
2505 | if (fc == ']' || fc == '-') |
2506 | { |
2507 | /* If ] or - appears before any char in the set, it is not |
2508 | the terminator or separator, but the first char in the |
2509 | set. */ |
2510 | ((char *)charbuf.scratch.data)[fc] = 1; |
2511 | ++f; |
2512 | } |
2513 | |
2514 | while ((fc = *f++) != '\0' && fc != ']') |
2515 | if (fc == '-' && *f != '\0' && *f != ']' |
2516 | && (unsigned char) f[-2] <= (unsigned char) *f) |
2517 | { |
2518 | /* Add all characters from the one before the '-' |
2519 | up to (but not including) the next format char. */ |
2520 | for (fc = (unsigned char) f[-2]; fc < (unsigned char) *f; ++fc) |
2521 | ((char *)charbuf.scratch.data)[fc] = 1; |
2522 | } |
2523 | else |
2524 | /* Add the character to the flag map. */ |
2525 | ((char *)charbuf.scratch.data)[fc] = 1; |
2526 | |
2527 | if (__glibc_unlikely (fc == '\0')) |
2528 | conv_error(); |
2529 | #endif |
2530 | |
2531 | if (flags & LONG) |
2532 | { |
2533 | size_t now = read_in; |
2534 | #ifdef COMPILE_WSCANF |
2535 | if (__glibc_unlikely (inchar () == WEOF)) |
2536 | input_error (); |
2537 | |
2538 | do |
2539 | { |
2540 | wchar_t *runp; |
2541 | |
2542 | /* Test whether it's in the scanlist. */ |
2543 | runp = tw; |
2544 | while (runp < twend) |
2545 | { |
2546 | if (runp[0] == L'-' && runp[1] != '\0' |
2547 | && runp + 1 != twend |
2548 | && runp != tw |
2549 | && (unsigned int) runp[-1] <= (unsigned int) runp[1]) |
2550 | { |
2551 | /* Match against all characters in between the |
2552 | first and last character of the sequence. */ |
2553 | wchar_t wc; |
2554 | |
2555 | for (wc = runp[-1] + 1; wc <= runp[1]; ++wc) |
2556 | if ((wint_t) wc == c) |
2557 | break; |
2558 | |
2559 | if (wc <= runp[1] && !not_in) |
2560 | break; |
2561 | if (wc <= runp[1] && not_in) |
2562 | { |
2563 | /* The current character is not in the |
2564 | scanset. */ |
2565 | ungetc (c, s); |
2566 | goto out; |
2567 | } |
2568 | |
2569 | runp += 2; |
2570 | } |
2571 | else |
2572 | { |
2573 | if ((wint_t) *runp == c && !not_in) |
2574 | break; |
2575 | if ((wint_t) *runp == c && not_in) |
2576 | { |
2577 | ungetc (c, s); |
2578 | goto out; |
2579 | } |
2580 | |
2581 | ++runp; |
2582 | } |
2583 | } |
2584 | |
2585 | if (runp == twend && !not_in) |
2586 | { |
2587 | ungetc (c, s); |
2588 | goto out; |
2589 | } |
2590 | |
2591 | if (!(flags & SUPPRESS)) |
2592 | { |
2593 | *wstr++ = c; |
2594 | |
2595 | if ((flags & MALLOC) |
2596 | && wstr == (wchar_t *) *strptr + strsize) |
2597 | { |
2598 | /* Enlarge the buffer. */ |
2599 | wstr = (wchar_t *) realloc (*strptr, |
2600 | (2 * strsize) |
2601 | * sizeof (wchar_t)); |
2602 | if (wstr == NULL) |
2603 | { |
2604 | /* Can't allocate that much. Last-ditch |
2605 | effort. */ |
2606 | wstr = (wchar_t *) |
2607 | realloc (*strptr, (strsize + 1) |
2608 | * sizeof (wchar_t)); |
2609 | if (wstr == NULL) |
2610 | { |
2611 | if (flags & POSIX_MALLOC) |
2612 | { |
2613 | done = EOF; |
2614 | goto errout; |
2615 | } |
2616 | /* We lose. Oh well. Terminate the string |
2617 | and stop converting, so at least we don't |
2618 | skip any input. */ |
2619 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
2620 | strptr = NULL; |
2621 | ++done; |
2622 | conv_error (); |
2623 | } |
2624 | else |
2625 | { |
2626 | *strptr = (char *) wstr; |
2627 | wstr += strsize; |
2628 | ++strsize; |
2629 | } |
2630 | } |
2631 | else |
2632 | { |
2633 | *strptr = (char *) wstr; |
2634 | wstr += strsize; |
2635 | strsize *= 2; |
2636 | } |
2637 | } |
2638 | } |
2639 | } |
2640 | while (--width > 0 && inchar () != WEOF); |
2641 | out: |
2642 | #else |
2643 | char buf[MB_LEN_MAX]; |
2644 | size_t cnt = 0; |
2645 | mbstate_t cstate; |
2646 | |
2647 | if (__glibc_unlikely (inchar () == EOF)) |
2648 | input_error (); |
2649 | |
2650 | memset (&cstate, '\0', sizeof (cstate)); |
2651 | |
2652 | do |
2653 | { |
2654 | if (((char *) charbuf.scratch.data)[c] == not_in) |
2655 | { |
2656 | ungetc_not_eof (c, s); |
2657 | break; |
2658 | } |
2659 | |
2660 | /* This is easy. */ |
2661 | if (!(flags & SUPPRESS)) |
2662 | { |
2663 | size_t n; |
2664 | |
2665 | /* Convert it into a wide character. */ |
2666 | buf[0] = c; |
2667 | n = __mbrtowc (wstr, buf, 1, &cstate); |
2668 | |
2669 | if (n == (size_t) -2) |
2670 | { |
2671 | /* Possibly correct character, just not enough |
2672 | input. */ |
2673 | ++cnt; |
2674 | assert (cnt < MB_LEN_MAX); |
2675 | continue; |
2676 | } |
2677 | cnt = 0; |
2678 | |
2679 | ++wstr; |
2680 | if ((flags & MALLOC) |
2681 | && wstr == (wchar_t *) *strptr + strsize) |
2682 | { |
2683 | /* Enlarge the buffer. */ |
2684 | wstr = (wchar_t *) realloc (*strptr, |
2685 | (2 * strsize |
2686 | * sizeof (wchar_t))); |
2687 | if (wstr == NULL) |
2688 | { |
2689 | /* Can't allocate that much. Last-ditch |
2690 | effort. */ |
2691 | wstr = (wchar_t *) |
2692 | realloc (*strptr, ((strsize + 1) |
2693 | * sizeof (wchar_t))); |
2694 | if (wstr == NULL) |
2695 | { |
2696 | if (flags & POSIX_MALLOC) |
2697 | { |
2698 | done = EOF; |
2699 | goto errout; |
2700 | } |
2701 | /* We lose. Oh well. Terminate the |
2702 | string and stop converting, |
2703 | so at least we don't skip any input. */ |
2704 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
2705 | strptr = NULL; |
2706 | ++done; |
2707 | conv_error (); |
2708 | } |
2709 | else |
2710 | { |
2711 | *strptr = (char *) wstr; |
2712 | wstr += strsize; |
2713 | ++strsize; |
2714 | } |
2715 | } |
2716 | else |
2717 | { |
2718 | *strptr = (char *) wstr; |
2719 | wstr += strsize; |
2720 | strsize *= 2; |
2721 | } |
2722 | } |
2723 | } |
2724 | |
2725 | if (--width <= 0) |
2726 | break; |
2727 | } |
2728 | while (inchar () != EOF); |
2729 | |
2730 | if (__glibc_unlikely (cnt != 0)) |
2731 | /* We stopped in the middle of recognizing another |
2732 | character. That's a problem. */ |
2733 | encode_error (); |
2734 | #endif |
2735 | |
2736 | if (__glibc_unlikely (now == read_in)) |
2737 | /* We haven't succesfully read any character. */ |
2738 | conv_error (); |
2739 | |
2740 | if (!(flags & SUPPRESS)) |
2741 | { |
2742 | *wstr++ = L'\0'; |
2743 | |
2744 | if ((flags & MALLOC) |
2745 | && wstr - (wchar_t *) *strptr != strsize) |
2746 | { |
2747 | wchar_t *cp = (wchar_t *) |
2748 | realloc (*strptr, ((wstr - (wchar_t *) *strptr) |
2749 | * sizeof(wchar_t))); |
2750 | if (cp != NULL) |
2751 | *strptr = (char *) cp; |
2752 | } |
2753 | strptr = NULL; |
2754 | |
2755 | ++done; |
2756 | } |
2757 | } |
2758 | else |
2759 | { |
2760 | size_t now = read_in; |
2761 | |
2762 | if (__glibc_unlikely (inchar () == EOF)) |
2763 | input_error (); |
2764 | |
2765 | #ifdef COMPILE_WSCANF |
2766 | |
2767 | memset (&state, '\0', sizeof (state)); |
2768 | |
2769 | do |
2770 | { |
2771 | wchar_t *runp; |
2772 | size_t n; |
2773 | |
2774 | /* Test whether it's in the scanlist. */ |
2775 | runp = tw; |
2776 | while (runp < twend) |
2777 | { |
2778 | if (runp[0] == L'-' && runp[1] != '\0' |
2779 | && runp + 1 != twend |
2780 | && runp != tw |
2781 | && (unsigned int) runp[-1] <= (unsigned int) runp[1]) |
2782 | { |
2783 | /* Match against all characters in between the |
2784 | first and last character of the sequence. */ |
2785 | wchar_t wc; |
2786 | |
2787 | for (wc = runp[-1] + 1; wc <= runp[1]; ++wc) |
2788 | if ((wint_t) wc == c) |
2789 | break; |
2790 | |
2791 | if (wc <= runp[1] && !not_in) |
2792 | break; |
2793 | if (wc <= runp[1] && not_in) |
2794 | { |
2795 | /* The current character is not in the |
2796 | scanset. */ |
2797 | ungetc (c, s); |
2798 | goto out2; |
2799 | } |
2800 | |
2801 | runp += 2; |
2802 | } |
2803 | else |
2804 | { |
2805 | if ((wint_t) *runp == c && !not_in) |
2806 | break; |
2807 | if ((wint_t) *runp == c && not_in) |
2808 | { |
2809 | ungetc (c, s); |
2810 | goto out2; |
2811 | } |
2812 | |
2813 | ++runp; |
2814 | } |
2815 | } |
2816 | |
2817 | if (runp == twend && !not_in) |
2818 | { |
2819 | ungetc (c, s); |
2820 | goto out2; |
2821 | } |
2822 | |
2823 | if (!(flags & SUPPRESS)) |
2824 | { |
2825 | if ((flags & MALLOC) |
2826 | && *strptr + strsize - str <= MB_LEN_MAX) |
2827 | { |
2828 | /* Enlarge the buffer. */ |
2829 | size_t strleng = str - *strptr; |
2830 | char *newstr; |
2831 | |
2832 | newstr = (char *) realloc (*strptr, 2 * strsize); |
2833 | if (newstr == NULL) |
2834 | { |
2835 | /* Can't allocate that much. Last-ditch |
2836 | effort. */ |
2837 | newstr = (char *) realloc (*strptr, |
2838 | strleng + MB_LEN_MAX); |
2839 | if (newstr == NULL) |
2840 | { |
2841 | if (flags & POSIX_MALLOC) |
2842 | { |
2843 | done = EOF; |
2844 | goto errout; |
2845 | } |
2846 | /* We lose. Oh well. Terminate the string |
2847 | and stop converting, so at least we don't |
2848 | skip any input. */ |
2849 | ((char *) (*strptr))[strleng] = '\0'; |
2850 | strptr = NULL; |
2851 | ++done; |
2852 | conv_error (); |
2853 | } |
2854 | else |
2855 | { |
2856 | *strptr = newstr; |
2857 | str = newstr + strleng; |
2858 | strsize = strleng + MB_LEN_MAX; |
2859 | } |
2860 | } |
2861 | else |
2862 | { |
2863 | *strptr = newstr; |
2864 | str = newstr + strleng; |
2865 | strsize *= 2; |
2866 | } |
2867 | } |
2868 | } |
2869 | |
2870 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); |
2871 | if (__glibc_unlikely (n == (size_t) -1)) |
2872 | encode_error (); |
2873 | |
2874 | assert (n <= MB_LEN_MAX); |
2875 | str += n; |
2876 | } |
2877 | while (--width > 0 && inchar () != WEOF); |
2878 | out2: |
2879 | #else |
2880 | do |
2881 | { |
2882 | if (((char *) charbuf.scratch.data)[c] == not_in) |
2883 | { |
2884 | ungetc_not_eof (c, s); |
2885 | break; |
2886 | } |
2887 | |
2888 | /* This is easy. */ |
2889 | if (!(flags & SUPPRESS)) |
2890 | { |
2891 | *str++ = c; |
2892 | if ((flags & MALLOC) |
2893 | && (char *) str == *strptr + strsize) |
2894 | { |
2895 | /* Enlarge the buffer. */ |
2896 | size_t newsize = 2 * strsize; |
2897 | |
2898 | allocagain: |
2899 | str = (char *) realloc (*strptr, newsize); |
2900 | if (str == NULL) |
2901 | { |
2902 | /* Can't allocate that much. Last-ditch |
2903 | effort. */ |
2904 | if (newsize > strsize + 1) |
2905 | { |
2906 | newsize = strsize + 1; |
2907 | goto allocagain; |
2908 | } |
2909 | if (flags & POSIX_MALLOC) |
2910 | { |
2911 | done = EOF; |
2912 | goto errout; |
2913 | } |
2914 | /* We lose. Oh well. Terminate the |
2915 | string and stop converting, |
2916 | so at least we don't skip any input. */ |
2917 | ((char *) (*strptr))[strsize - 1] = '\0'; |
2918 | strptr = NULL; |
2919 | ++done; |
2920 | conv_error (); |
2921 | } |
2922 | else |
2923 | { |
2924 | *strptr = (char *) str; |
2925 | str += strsize; |
2926 | strsize = newsize; |
2927 | } |
2928 | } |
2929 | } |
2930 | } |
2931 | while (--width > 0 && inchar () != EOF); |
2932 | #endif |
2933 | |
2934 | if (__glibc_unlikely (now == read_in)) |
2935 | /* We haven't succesfully read any character. */ |
2936 | conv_error (); |
2937 | |
2938 | if (!(flags & SUPPRESS)) |
2939 | { |
2940 | #ifdef COMPILE_WSCANF |
2941 | /* We have to emit the code to get into the initial |
2942 | state. */ |
2943 | char buf[MB_LEN_MAX]; |
2944 | size_t n = __wcrtomb (buf, L'\0', &state); |
2945 | if (n > 0 && (flags & MALLOC) |
2946 | && str + n >= *strptr + strsize) |
2947 | { |
2948 | /* Enlarge the buffer. */ |
2949 | size_t strleng = str - *strptr; |
2950 | char *newstr; |
2951 | |
2952 | newstr = (char *) realloc (*strptr, strleng + n + 1); |
2953 | if (newstr == NULL) |
2954 | { |
2955 | if (flags & POSIX_MALLOC) |
2956 | { |
2957 | done = EOF; |
2958 | goto errout; |
2959 | } |
2960 | /* We lose. Oh well. Terminate the string |
2961 | and stop converting, so at least we don't |
2962 | skip any input. */ |
2963 | ((char *) (*strptr))[strleng] = '\0'; |
2964 | strptr = NULL; |
2965 | ++done; |
2966 | conv_error (); |
2967 | } |
2968 | else |
2969 | { |
2970 | *strptr = newstr; |
2971 | str = newstr + strleng; |
2972 | strsize = strleng + n + 1; |
2973 | } |
2974 | } |
2975 | |
2976 | str = __mempcpy (str, buf, n); |
2977 | #endif |
2978 | *str++ = '\0'; |
2979 | |
2980 | if ((flags & MALLOC) && str - *strptr != strsize) |
2981 | { |
2982 | char *cp = (char *) realloc (*strptr, str - *strptr); |
2983 | if (cp != NULL) |
2984 | *strptr = cp; |
2985 | } |
2986 | strptr = NULL; |
2987 | |
2988 | ++done; |
2989 | } |
2990 | } |
2991 | break; |
2992 | |
2993 | case L_('p'): /* Generic pointer. */ |
2994 | base = 16; |
2995 | /* A PTR must be the same size as a `long int'. */ |
2996 | flags &= ~(SHORT|LONGDBL); |
2997 | if (need_long) |
2998 | flags |= LONG; |
2999 | flags |= READ_POINTER; |
3000 | goto number; |
3001 | |
3002 | default: |
3003 | /* If this is an unknown format character punt. */ |
3004 | conv_error (); |
3005 | } |
3006 | } |
3007 | |
3008 | /* The last thing we saw int the format string was a white space. |
3009 | Consume the last white spaces. */ |
3010 | if (skip_space) |
3011 | { |
3012 | do |
3013 | c = inchar (); |
3014 | while (ISSPACE (c)); |
3015 | ungetc (c, s); |
3016 | } |
3017 | |
3018 | errout: |
3019 | /* Unlock stream. */ |
3020 | UNLOCK_STREAM (s); |
3021 | |
3022 | scratch_buffer_free (&charbuf.scratch); |
3023 | if (errp != NULL) |
3024 | *errp |= errval; |
3025 | |
3026 | if (__glibc_unlikely (done == EOF)) |
3027 | { |
3028 | if (__glibc_unlikely (ptrs_to_free != NULL)) |
3029 | { |
3030 | struct ptrs_to_free *p = ptrs_to_free; |
3031 | while (p != NULL) |
3032 | { |
3033 | for (size_t cnt = 0; cnt < p->count; ++cnt) |
3034 | { |
3035 | free (*p->ptrs[cnt]); |
3036 | *p->ptrs[cnt] = NULL; |
3037 | } |
3038 | p = p->next; |
3039 | ptrs_to_free = p; |
3040 | } |
3041 | } |
3042 | } |
3043 | else if (__glibc_unlikely (strptr != NULL)) |
3044 | { |
3045 | free (*strptr); |
3046 | *strptr = NULL; |
3047 | } |
3048 | return done; |
3049 | } |
3050 | |
3051 | #ifdef COMPILE_WSCANF |
3052 | int |
3053 | __vfwscanf (FILE *s, const wchar_t *format, va_list argptr) |
3054 | { |
3055 | return _IO_vfwscanf (s, format, argptr, NULL); |
3056 | } |
3057 | ldbl_weak_alias (__vfwscanf, vfwscanf) |
3058 | #else |
3059 | int |
3060 | ___vfscanf (FILE *s, const char *format, va_list argptr) |
3061 | { |
3062 | return _IO_vfscanf_internal (s, format, argptr, NULL); |
3063 | } |
3064 | ldbl_strong_alias (_IO_vfscanf_internal, _IO_vfscanf) |
3065 | ldbl_hidden_def (_IO_vfscanf_internal, _IO_vfscanf) |
3066 | ldbl_strong_alias (___vfscanf, __vfscanf) |
3067 | ldbl_hidden_def (___vfscanf, __vfscanf) |
3068 | ldbl_weak_alias (___vfscanf, vfscanf) |
3069 | #endif |
3070 | |