1 | /* Copyright (C) 1991-2016 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-internal.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 | #include <libio.h> |
76 | |
77 | #undef va_list |
78 | #define va_list _IO_va_list |
79 | |
80 | #ifdef COMPILE_WSCANF |
81 | # define ungetc(c, s) ((void) (c == WEOF \ |
82 | || (--read_in, \ |
83 | _IO_sputbackwc (s, c)))) |
84 | # define ungetc_not_eof(c, s) ((void) (--read_in, \ |
85 | _IO_sputbackwc (s, c))) |
86 | # define inchar() (c == WEOF ? ((errno = inchar_errno), WEOF) \ |
87 | : ((c = _IO_getwc_unlocked (s)), \ |
88 | (void) (c != WEOF \ |
89 | ? ++read_in \ |
90 | : (size_t) (inchar_errno = errno)), c)) |
91 | |
92 | # define ISSPACE(Ch) iswspace (Ch) |
93 | # define ISDIGIT(Ch) iswdigit (Ch) |
94 | # define ISXDIGIT(Ch) iswxdigit (Ch) |
95 | # define TOLOWER(Ch) towlower (Ch) |
96 | # define ORIENT if (_IO_fwide (s, 1) != 1) return WEOF |
97 | # define __strtoll_internal __wcstoll_internal |
98 | # define __strtoull_internal __wcstoull_internal |
99 | # define __strtol_internal __wcstol_internal |
100 | # define __strtoul_internal __wcstoul_internal |
101 | # define __strtold_internal __wcstold_internal |
102 | # define __strtod_internal __wcstod_internal |
103 | # define __strtof_internal __wcstof_internal |
104 | |
105 | # define L_(Str) L##Str |
106 | # define CHAR_T wchar_t |
107 | # define UCHAR_T unsigned int |
108 | # define WINT_T wint_t |
109 | # undef EOF |
110 | # define EOF WEOF |
111 | #else |
112 | # define ungetc(c, s) ((void) ((int) c == EOF \ |
113 | || (--read_in, \ |
114 | _IO_sputbackc (s, (unsigned char) c)))) |
115 | # define ungetc_not_eof(c, s) ((void) (--read_in, \ |
116 | _IO_sputbackc (s, (unsigned char) c))) |
117 | # define inchar() (c == EOF ? ((errno = inchar_errno), EOF) \ |
118 | : ((c = _IO_getc_unlocked (s)), \ |
119 | (void) (c != EOF \ |
120 | ? ++read_in \ |
121 | : (size_t) (inchar_errno = errno)), c)) |
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 | struct char_buffer { |
196 | CHAR_T *current; |
197 | CHAR_T *end; |
198 | struct scratch_buffer scratch; |
199 | }; |
200 | |
201 | /* Returns a pointer to the first CHAR_T object in the buffer. Only |
202 | valid if char_buffer_add (BUFFER, CH) has been called and |
203 | char_buffer_error (BUFFER) is false. */ |
204 | static inline CHAR_T * |
205 | char_buffer_start (const struct char_buffer *buffer) |
206 | { |
207 | return (CHAR_T *) buffer->scratch.data; |
208 | } |
209 | |
210 | /* Returns the number of CHAR_T objects in the buffer. Only valid if |
211 | char_buffer_error (BUFFER) is false. */ |
212 | static inline size_t |
213 | char_buffer_size (const struct char_buffer *buffer) |
214 | { |
215 | return buffer->current - char_buffer_start (buffer); |
216 | } |
217 | |
218 | /* Reinitializes BUFFER->current and BUFFER->end to cover the entire |
219 | scratch buffer. */ |
220 | static inline void |
221 | char_buffer_rewind (struct char_buffer *buffer) |
222 | { |
223 | buffer->current = char_buffer_start (buffer); |
224 | buffer->end = buffer->current + buffer->scratch.length / sizeof (CHAR_T); |
225 | } |
226 | |
227 | /* Returns true if a previous call to char_buffer_add (BUFFER, CH) |
228 | failed. */ |
229 | static inline bool |
230 | char_buffer_error (const struct char_buffer *buffer) |
231 | { |
232 | return __glibc_unlikely (buffer->current == NULL); |
233 | } |
234 | |
235 | /* Slow path for char_buffer_add. */ |
236 | static void |
237 | char_buffer_add_slow (struct char_buffer *buffer, CHAR_T ch) |
238 | { |
239 | if (char_buffer_error (buffer)) |
240 | return; |
241 | size_t offset = buffer->end - (CHAR_T *) buffer->scratch.data; |
242 | if (!scratch_buffer_grow_preserve (&buffer->scratch)) |
243 | { |
244 | buffer->current = NULL; |
245 | buffer->end = NULL; |
246 | return; |
247 | } |
248 | char_buffer_rewind (buffer); |
249 | buffer->current += offset; |
250 | *buffer->current++ = ch; |
251 | } |
252 | |
253 | /* Adds CH to BUFFER. This function does not report any errors, check |
254 | for them with char_buffer_error. */ |
255 | static inline void |
256 | char_buffer_add (struct char_buffer *buffer, CHAR_T ch) |
257 | __attribute__ ((always_inline)); |
258 | static inline void |
259 | char_buffer_add (struct char_buffer *buffer, CHAR_T ch) |
260 | { |
261 | if (__glibc_unlikely (buffer->current == buffer->end)) |
262 | char_buffer_add_slow (buffer, ch); |
263 | else |
264 | *buffer->current++ = ch; |
265 | } |
266 | |
267 | /* Read formatted input from S according to the format string |
268 | FORMAT, using the argument list in ARG. |
269 | Return the number of assignments made, or -1 for an input error. */ |
270 | #ifdef COMPILE_WSCANF |
271 | int |
272 | _IO_vfwscanf (_IO_FILE *s, const wchar_t *format, _IO_va_list argptr, |
273 | int *errp) |
274 | #else |
275 | int |
276 | _IO_vfscanf_internal (_IO_FILE *s, const char *format, _IO_va_list argptr, |
277 | int *errp) |
278 | #endif |
279 | { |
280 | va_list arg; |
281 | const CHAR_T *f = format; |
282 | UCHAR_T fc; /* Current character of the format. */ |
283 | WINT_T done = 0; /* Assignments done. */ |
284 | size_t read_in = 0; /* Chars read in. */ |
285 | WINT_T c = 0; /* Last char read. */ |
286 | int width; /* Maximum field width. */ |
287 | int flags; /* Modifiers for current format element. */ |
288 | int errval = 0; |
289 | #ifndef COMPILE_WSCANF |
290 | __locale_t loc = _NL_CURRENT_LOCALE; |
291 | struct __locale_data *const curctype = loc->__locales[LC_CTYPE]; |
292 | #endif |
293 | |
294 | /* Errno of last failed inchar call. */ |
295 | int inchar_errno = 0; |
296 | /* Status for reading F-P nums. */ |
297 | char got_digit, got_dot, got_e, negative; |
298 | /* If a [...] is a [^...]. */ |
299 | CHAR_T not_in; |
300 | #define exp_char not_in |
301 | /* Base for integral numbers. */ |
302 | int base; |
303 | /* Decimal point character. */ |
304 | #ifdef COMPILE_WSCANF |
305 | wint_t decimal; |
306 | #else |
307 | const char *decimal; |
308 | #endif |
309 | /* The thousands character of the current locale. */ |
310 | #ifdef COMPILE_WSCANF |
311 | wint_t thousands; |
312 | #else |
313 | const char *thousands; |
314 | #endif |
315 | struct ptrs_to_free *ptrs_to_free = NULL; |
316 | /* State for the conversions. */ |
317 | mbstate_t state; |
318 | /* Integral holding variables. */ |
319 | union |
320 | { |
321 | long long int q; |
322 | unsigned long long int uq; |
323 | long int l; |
324 | unsigned long int ul; |
325 | } num; |
326 | /* Character-buffer pointer. */ |
327 | char *str = NULL; |
328 | wchar_t *wstr = NULL; |
329 | char **strptr = NULL; |
330 | ssize_t strsize = 0; |
331 | /* We must not react on white spaces immediately because they can |
332 | possibly be matched even if in the input stream no character is |
333 | available anymore. */ |
334 | int skip_space = 0; |
335 | /* Workspace. */ |
336 | CHAR_T *tw; /* Temporary pointer. */ |
337 | struct char_buffer charbuf; |
338 | scratch_buffer_init (&charbuf.scratch); |
339 | |
340 | #ifdef __va_copy |
341 | __va_copy (arg, argptr); |
342 | #else |
343 | arg = (va_list) argptr; |
344 | #endif |
345 | |
346 | #ifdef ORIENT |
347 | ORIENT; |
348 | #endif |
349 | |
350 | ARGCHECK (s, format); |
351 | |
352 | { |
353 | #ifndef COMPILE_WSCANF |
354 | struct __locale_data *const curnumeric = loc->__locales[LC_NUMERIC]; |
355 | #endif |
356 | |
357 | /* Figure out the decimal point character. */ |
358 | #ifdef COMPILE_WSCANF |
359 | decimal = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_DECIMAL_POINT_WC); |
360 | #else |
361 | decimal = curnumeric->values[_NL_ITEM_INDEX (DECIMAL_POINT)].string; |
362 | #endif |
363 | /* Figure out the thousands separator character. */ |
364 | #ifdef COMPILE_WSCANF |
365 | thousands = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_THOUSANDS_SEP_WC); |
366 | #else |
367 | thousands = curnumeric->values[_NL_ITEM_INDEX (THOUSANDS_SEP)].string; |
368 | if (*thousands == '\0') |
369 | thousands = NULL; |
370 | #endif |
371 | } |
372 | |
373 | /* Lock the stream. */ |
374 | LOCK_STREAM (s); |
375 | |
376 | |
377 | #ifndef COMPILE_WSCANF |
378 | /* From now on we use `state' to convert the format string. */ |
379 | memset (&state, '\0', sizeof (state)); |
380 | #endif |
381 | |
382 | /* Run through the format string. */ |
383 | while (*f != '\0') |
384 | { |
385 | unsigned int argpos; |
386 | /* Extract the next argument, which is of type TYPE. |
387 | For a %N$... spec, this is the Nth argument from the beginning; |
388 | otherwise it is the next argument after the state now in ARG. */ |
389 | #ifdef __va_copy |
390 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ |
391 | ({ unsigned int pos = argpos; \ |
392 | va_list arg; \ |
393 | __va_copy (arg, argptr); \ |
394 | while (--pos > 0) \ |
395 | (void) va_arg (arg, void *); \ |
396 | va_arg (arg, type); \ |
397 | })) |
398 | #else |
399 | # if 0 |
400 | /* XXX Possible optimization. */ |
401 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ |
402 | ({ va_list arg = (va_list) argptr; \ |
403 | arg = (va_list) ((char *) arg \ |
404 | + (argpos - 1) \ |
405 | * __va_rounded_size (void *)); \ |
406 | va_arg (arg, type); \ |
407 | })) |
408 | # else |
409 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ |
410 | ({ unsigned int pos = argpos; \ |
411 | va_list arg = (va_list) argptr; \ |
412 | while (--pos > 0) \ |
413 | (void) va_arg (arg, void *); \ |
414 | va_arg (arg, type); \ |
415 | })) |
416 | # endif |
417 | #endif |
418 | |
419 | #ifndef COMPILE_WSCANF |
420 | if (!isascii ((unsigned char) *f)) |
421 | { |
422 | /* Non-ASCII, may be a multibyte. */ |
423 | int len = __mbrlen (f, strlen (f), &state); |
424 | if (len > 0) |
425 | { |
426 | do |
427 | { |
428 | c = inchar (); |
429 | if (__glibc_unlikely (c == EOF)) |
430 | input_error (); |
431 | else if (c != (unsigned char) *f++) |
432 | { |
433 | ungetc_not_eof (c, s); |
434 | conv_error (); |
435 | } |
436 | } |
437 | while (--len > 0); |
438 | continue; |
439 | } |
440 | } |
441 | #endif |
442 | |
443 | fc = *f++; |
444 | if (fc != '%') |
445 | { |
446 | /* Remember to skip spaces. */ |
447 | if (ISSPACE (fc)) |
448 | { |
449 | skip_space = 1; |
450 | continue; |
451 | } |
452 | |
453 | /* Read a character. */ |
454 | c = inchar (); |
455 | |
456 | /* Characters other than format specs must just match. */ |
457 | if (__glibc_unlikely (c == EOF)) |
458 | input_error (); |
459 | |
460 | /* We saw white space char as the last character in the format |
461 | string. Now it's time to skip all leading white space. */ |
462 | if (skip_space) |
463 | { |
464 | while (ISSPACE (c)) |
465 | if (__glibc_unlikely (inchar () == EOF)) |
466 | input_error (); |
467 | skip_space = 0; |
468 | } |
469 | |
470 | if (__glibc_unlikely (c != fc)) |
471 | { |
472 | ungetc (c, s); |
473 | conv_error (); |
474 | } |
475 | |
476 | continue; |
477 | } |
478 | |
479 | /* This is the start of the conversion string. */ |
480 | flags = 0; |
481 | |
482 | /* Initialize state of modifiers. */ |
483 | argpos = 0; |
484 | |
485 | /* Prepare temporary buffer. */ |
486 | char_buffer_rewind (&charbuf); |
487 | |
488 | /* Check for a positional parameter specification. */ |
489 | if (ISDIGIT ((UCHAR_T) *f)) |
490 | { |
491 | argpos = (UCHAR_T) *f++ - L_('0'); |
492 | while (ISDIGIT ((UCHAR_T) *f)) |
493 | argpos = argpos * 10 + ((UCHAR_T) *f++ - L_('0')); |
494 | if (*f == L_('$')) |
495 | ++f; |
496 | else |
497 | { |
498 | /* Oops; that was actually the field width. */ |
499 | width = argpos; |
500 | argpos = 0; |
501 | goto got_width; |
502 | } |
503 | } |
504 | |
505 | /* Check for the assignment-suppressing, the number grouping flag, |
506 | and the signal to use the locale's digit representation. */ |
507 | while (*f == L_('*') || *f == L_('\'') || *f == L_('I')) |
508 | switch (*f++) |
509 | { |
510 | case L_('*'): |
511 | flags |= SUPPRESS; |
512 | break; |
513 | case L_('\''): |
514 | #ifdef COMPILE_WSCANF |
515 | if (thousands != L'\0') |
516 | #else |
517 | if (thousands != NULL) |
518 | #endif |
519 | flags |= GROUP; |
520 | break; |
521 | case L_('I'): |
522 | flags |= I18N; |
523 | break; |
524 | } |
525 | |
526 | /* Find the maximum field width. */ |
527 | width = 0; |
528 | while (ISDIGIT ((UCHAR_T) *f)) |
529 | { |
530 | width *= 10; |
531 | width += (UCHAR_T) *f++ - L_('0'); |
532 | } |
533 | got_width: |
534 | if (width == 0) |
535 | width = -1; |
536 | |
537 | /* Check for type modifiers. */ |
538 | switch (*f++) |
539 | { |
540 | case L_('h'): |
541 | /* ints are short ints or chars. */ |
542 | if (*f == L_('h')) |
543 | { |
544 | ++f; |
545 | flags |= CHAR; |
546 | } |
547 | else |
548 | flags |= SHORT; |
549 | break; |
550 | case L_('l'): |
551 | if (*f == L_('l')) |
552 | { |
553 | /* A double `l' is equivalent to an `L'. */ |
554 | ++f; |
555 | flags |= LONGDBL | LONG; |
556 | } |
557 | else |
558 | /* ints are long ints. */ |
559 | flags |= LONG; |
560 | break; |
561 | case L_('q'): |
562 | case L_('L'): |
563 | /* doubles are long doubles, and ints are long long ints. */ |
564 | flags |= LONGDBL | LONG; |
565 | break; |
566 | case L_('a'): |
567 | /* The `a' is used as a flag only if followed by `s', `S' or |
568 | `['. */ |
569 | if (*f != L_('s') && *f != L_('S') && *f != L_('[')) |
570 | { |
571 | --f; |
572 | break; |
573 | } |
574 | /* In __isoc99_*scanf %as, %aS and %a[ extension is not |
575 | supported at all. */ |
576 | if (s->_flags2 & _IO_FLAGS2_SCANF_STD) |
577 | { |
578 | --f; |
579 | break; |
580 | } |
581 | /* String conversions (%s, %[) take a `char **' |
582 | arg and fill it in with a malloc'd pointer. */ |
583 | flags |= GNU_MALLOC; |
584 | break; |
585 | case L_('m'): |
586 | flags |= POSIX_MALLOC; |
587 | if (*f == L_('l')) |
588 | { |
589 | ++f; |
590 | flags |= LONG; |
591 | } |
592 | break; |
593 | case L_('z'): |
594 | if (need_longlong && sizeof (size_t) > sizeof (unsigned long int)) |
595 | flags |= LONGDBL; |
596 | else if (sizeof (size_t) > sizeof (unsigned int)) |
597 | flags |= LONG; |
598 | break; |
599 | case L_('j'): |
600 | if (need_longlong && sizeof (uintmax_t) > sizeof (unsigned long int)) |
601 | flags |= LONGDBL; |
602 | else if (sizeof (uintmax_t) > sizeof (unsigned int)) |
603 | flags |= LONG; |
604 | break; |
605 | case L_('t'): |
606 | if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int)) |
607 | flags |= LONGDBL; |
608 | else if (sizeof (ptrdiff_t) > sizeof (int)) |
609 | flags |= LONG; |
610 | break; |
611 | default: |
612 | /* Not a recognized modifier. Backup. */ |
613 | --f; |
614 | break; |
615 | } |
616 | |
617 | /* End of the format string? */ |
618 | if (__glibc_unlikely (*f == L_('\0'))) |
619 | conv_error (); |
620 | |
621 | /* Find the conversion specifier. */ |
622 | fc = *f++; |
623 | if (skip_space || (fc != L_('[') && fc != L_('c') |
624 | && fc != L_('C') && fc != L_('n'))) |
625 | { |
626 | /* Eat whitespace. */ |
627 | int save_errno = errno; |
628 | __set_errno (0); |
629 | do |
630 | /* We add the additional test for EOF here since otherwise |
631 | inchar will restore the old errno value which might be |
632 | EINTR but does not indicate an interrupt since nothing |
633 | was read at this time. */ |
634 | if (__builtin_expect ((c == EOF || inchar () == EOF) |
635 | && errno == EINTR, 0)) |
636 | input_error (); |
637 | while (ISSPACE (c)); |
638 | __set_errno (save_errno); |
639 | ungetc (c, s); |
640 | skip_space = 0; |
641 | } |
642 | |
643 | switch (fc) |
644 | { |
645 | case L_('%'): /* Must match a literal '%'. */ |
646 | c = inchar (); |
647 | if (__glibc_unlikely (c == EOF)) |
648 | input_error (); |
649 | if (__glibc_unlikely (c != fc)) |
650 | { |
651 | ungetc_not_eof (c, s); |
652 | conv_error (); |
653 | } |
654 | break; |
655 | |
656 | case L_('n'): /* Answer number of assignments done. */ |
657 | /* Corrigendum 1 to ISO C 1990 describes the allowed flags |
658 | with the 'n' conversion specifier. */ |
659 | if (!(flags & SUPPRESS)) |
660 | { |
661 | /* Don't count the read-ahead. */ |
662 | if (need_longlong && (flags & LONGDBL)) |
663 | *ARG (long long int *) = read_in; |
664 | else if (need_long && (flags & LONG)) |
665 | *ARG (long int *) = read_in; |
666 | else if (flags & SHORT) |
667 | *ARG (short int *) = read_in; |
668 | else if (!(flags & CHAR)) |
669 | *ARG (int *) = read_in; |
670 | else |
671 | *ARG (char *) = read_in; |
672 | |
673 | #ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1 |
674 | /* We have a severe problem here. The ISO C standard |
675 | contradicts itself in explaining the effect of the %n |
676 | format in `scanf'. While in ISO C:1990 and the ISO C |
677 | Amendement 1:1995 the result is described as |
678 | |
679 | Execution of a %n directive does not effect the |
680 | assignment count returned at the completion of |
681 | execution of the f(w)scanf function. |
682 | |
683 | in ISO C Corrigendum 1:1994 the following was added: |
684 | |
685 | Subclause 7.9.6.2 |
686 | Add the following fourth example: |
687 | In: |
688 | #include <stdio.h> |
689 | int d1, d2, n1, n2, i; |
690 | i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2); |
691 | the value 123 is assigned to d1 and the value3 to n1. |
692 | Because %n can never get an input failure the value |
693 | of 3 is also assigned to n2. The value of d2 is not |
694 | affected. The value 3 is assigned to i. |
695 | |
696 | We go for now with the historically correct code from ISO C, |
697 | i.e., we don't count the %n assignments. When it ever |
698 | should proof to be wrong just remove the #ifdef above. */ |
699 | ++done; |
700 | #endif |
701 | } |
702 | break; |
703 | |
704 | case L_('c'): /* Match characters. */ |
705 | if ((flags & LONG) == 0) |
706 | { |
707 | if (width == -1) |
708 | width = 1; |
709 | |
710 | #define STRING_ARG(Str, Type, Width) \ |
711 | do if (!(flags & SUPPRESS)) \ |
712 | { \ |
713 | if (flags & MALLOC) \ |
714 | { \ |
715 | /* The string is to be stored in a malloc'd buffer. */ \ |
716 | /* For %mS using char ** is actually wrong, but \ |
717 | shouldn't make a difference on any arch glibc \ |
718 | supports and would unnecessarily complicate \ |
719 | things. */ \ |
720 | strptr = ARG (char **); \ |
721 | if (strptr == NULL) \ |
722 | conv_error (); \ |
723 | /* Allocate an initial buffer. */ \ |
724 | strsize = Width; \ |
725 | *strptr = (char *) malloc (strsize * sizeof (Type)); \ |
726 | Str = (Type *) *strptr; \ |
727 | if (Str != NULL) \ |
728 | add_ptr_to_free (strptr); \ |
729 | else if (flags & POSIX_MALLOC) \ |
730 | { \ |
731 | done = EOF; \ |
732 | goto errout; \ |
733 | } \ |
734 | } \ |
735 | else \ |
736 | Str = ARG (Type *); \ |
737 | if (Str == NULL) \ |
738 | conv_error (); \ |
739 | } while (0) |
740 | #ifdef COMPILE_WSCANF |
741 | STRING_ARG (str, char, 100); |
742 | #else |
743 | STRING_ARG (str, char, (width > 1024 ? 1024 : width)); |
744 | #endif |
745 | |
746 | c = inchar (); |
747 | if (__glibc_unlikely (c == EOF)) |
748 | input_error (); |
749 | |
750 | #ifdef COMPILE_WSCANF |
751 | /* We have to convert the wide character(s) into multibyte |
752 | characters and store the result. */ |
753 | memset (&state, '\0', sizeof (state)); |
754 | |
755 | do |
756 | { |
757 | size_t n; |
758 | |
759 | if (!(flags & SUPPRESS) && (flags & POSIX_MALLOC) |
760 | && str + MB_CUR_MAX >= *strptr + strsize) |
761 | { |
762 | /* We have to enlarge the buffer if the `m' flag |
763 | was given. */ |
764 | size_t strleng = str - *strptr; |
765 | char *newstr; |
766 | |
767 | newstr = (char *) realloc (*strptr, strsize * 2); |
768 | if (newstr == NULL) |
769 | { |
770 | /* Can't allocate that much. Last-ditch effort. */ |
771 | newstr = (char *) realloc (*strptr, |
772 | strleng + MB_CUR_MAX); |
773 | if (newstr == NULL) |
774 | { |
775 | /* c can't have `a' flag, only `m'. */ |
776 | done = EOF; |
777 | goto errout; |
778 | } |
779 | else |
780 | { |
781 | *strptr = newstr; |
782 | str = newstr + strleng; |
783 | strsize = strleng + MB_CUR_MAX; |
784 | } |
785 | } |
786 | else |
787 | { |
788 | *strptr = newstr; |
789 | str = newstr + strleng; |
790 | strsize *= 2; |
791 | } |
792 | } |
793 | |
794 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); |
795 | if (__glibc_unlikely (n == (size_t) -1)) |
796 | /* No valid wide character. */ |
797 | input_error (); |
798 | |
799 | /* Increment the output pointer. Even if we don't |
800 | write anything. */ |
801 | str += n; |
802 | } |
803 | while (--width > 0 && inchar () != EOF); |
804 | #else |
805 | if (!(flags & SUPPRESS)) |
806 | { |
807 | do |
808 | { |
809 | if ((flags & MALLOC) |
810 | && (char *) str == *strptr + strsize) |
811 | { |
812 | /* Enlarge the buffer. */ |
813 | size_t newsize |
814 | = strsize |
815 | + (strsize >= width ? width - 1 : strsize); |
816 | |
817 | str = (char *) realloc (*strptr, newsize); |
818 | if (str == NULL) |
819 | { |
820 | /* Can't allocate that much. Last-ditch |
821 | effort. */ |
822 | str = (char *) realloc (*strptr, strsize + 1); |
823 | if (str == NULL) |
824 | { |
825 | /* c can't have `a' flag, only `m'. */ |
826 | done = EOF; |
827 | goto errout; |
828 | } |
829 | else |
830 | { |
831 | *strptr = (char *) str; |
832 | str += strsize; |
833 | ++strsize; |
834 | } |
835 | } |
836 | else |
837 | { |
838 | *strptr = (char *) str; |
839 | str += strsize; |
840 | strsize = newsize; |
841 | } |
842 | } |
843 | *str++ = c; |
844 | } |
845 | while (--width > 0 && inchar () != EOF); |
846 | } |
847 | else |
848 | while (--width > 0 && inchar () != EOF); |
849 | #endif |
850 | |
851 | if (!(flags & SUPPRESS)) |
852 | { |
853 | if ((flags & MALLOC) && str - *strptr != strsize) |
854 | { |
855 | char *cp = (char *) realloc (*strptr, str - *strptr); |
856 | if (cp != NULL) |
857 | *strptr = cp; |
858 | } |
859 | strptr = NULL; |
860 | ++done; |
861 | } |
862 | |
863 | break; |
864 | } |
865 | /* FALLTHROUGH */ |
866 | case L_('C'): |
867 | if (width == -1) |
868 | width = 1; |
869 | |
870 | STRING_ARG (wstr, wchar_t, (width > 1024 ? 1024 : width)); |
871 | |
872 | c = inchar (); |
873 | if (__glibc_unlikely (c == EOF)) |
874 | input_error (); |
875 | |
876 | #ifdef COMPILE_WSCANF |
877 | /* Just store the incoming wide characters. */ |
878 | if (!(flags & SUPPRESS)) |
879 | { |
880 | do |
881 | { |
882 | if ((flags & MALLOC) |
883 | && wstr == (wchar_t *) *strptr + strsize) |
884 | { |
885 | size_t newsize |
886 | = strsize + (strsize > width ? width - 1 : strsize); |
887 | /* Enlarge the buffer. */ |
888 | wstr = (wchar_t *) realloc (*strptr, |
889 | newsize * sizeof (wchar_t)); |
890 | if (wstr == NULL) |
891 | { |
892 | /* Can't allocate that much. Last-ditch effort. */ |
893 | wstr = (wchar_t *) realloc (*strptr, |
894 | (strsize + 1) |
895 | * sizeof (wchar_t)); |
896 | if (wstr == NULL) |
897 | { |
898 | /* C or lc can't have `a' flag, only `m' |
899 | flag. */ |
900 | done = EOF; |
901 | goto errout; |
902 | } |
903 | else |
904 | { |
905 | *strptr = (char *) wstr; |
906 | wstr += strsize; |
907 | ++strsize; |
908 | } |
909 | } |
910 | else |
911 | { |
912 | *strptr = (char *) wstr; |
913 | wstr += strsize; |
914 | strsize = newsize; |
915 | } |
916 | } |
917 | *wstr++ = c; |
918 | } |
919 | while (--width > 0 && inchar () != EOF); |
920 | } |
921 | else |
922 | while (--width > 0 && inchar () != EOF); |
923 | #else |
924 | { |
925 | /* We have to convert the multibyte input sequence to wide |
926 | characters. */ |
927 | char buf[1]; |
928 | mbstate_t cstate; |
929 | |
930 | memset (&cstate, '\0', sizeof (cstate)); |
931 | |
932 | do |
933 | { |
934 | /* This is what we present the mbrtowc function first. */ |
935 | buf[0] = c; |
936 | |
937 | if (!(flags & SUPPRESS) && (flags & MALLOC) |
938 | && wstr == (wchar_t *) *strptr + strsize) |
939 | { |
940 | size_t newsize |
941 | = strsize + (strsize > width ? width - 1 : strsize); |
942 | /* Enlarge the buffer. */ |
943 | wstr = (wchar_t *) realloc (*strptr, |
944 | newsize * sizeof (wchar_t)); |
945 | if (wstr == NULL) |
946 | { |
947 | /* Can't allocate that much. Last-ditch effort. */ |
948 | wstr = (wchar_t *) realloc (*strptr, |
949 | ((strsize + 1) |
950 | * sizeof (wchar_t))); |
951 | if (wstr == NULL) |
952 | { |
953 | /* C or lc can't have `a' flag, only `m' flag. */ |
954 | done = EOF; |
955 | goto errout; |
956 | } |
957 | else |
958 | { |
959 | *strptr = (char *) wstr; |
960 | wstr += strsize; |
961 | ++strsize; |
962 | } |
963 | } |
964 | else |
965 | { |
966 | *strptr = (char *) wstr; |
967 | wstr += strsize; |
968 | strsize = newsize; |
969 | } |
970 | } |
971 | |
972 | while (1) |
973 | { |
974 | size_t n; |
975 | |
976 | n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, |
977 | buf, 1, &cstate); |
978 | |
979 | if (n == (size_t) -2) |
980 | { |
981 | /* Possibly correct character, just not enough |
982 | input. */ |
983 | if (__glibc_unlikely (inchar () == EOF)) |
984 | encode_error (); |
985 | |
986 | buf[0] = c; |
987 | continue; |
988 | } |
989 | |
990 | if (__glibc_unlikely (n != 1)) |
991 | encode_error (); |
992 | |
993 | /* We have a match. */ |
994 | break; |
995 | } |
996 | |
997 | /* Advance the result pointer. */ |
998 | ++wstr; |
999 | } |
1000 | while (--width > 0 && inchar () != EOF); |
1001 | } |
1002 | #endif |
1003 | |
1004 | if (!(flags & SUPPRESS)) |
1005 | { |
1006 | if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) |
1007 | { |
1008 | wchar_t *cp = (wchar_t *) realloc (*strptr, |
1009 | ((wstr |
1010 | - (wchar_t *) *strptr) |
1011 | * sizeof (wchar_t))); |
1012 | if (cp != NULL) |
1013 | *strptr = (char *) cp; |
1014 | } |
1015 | strptr = NULL; |
1016 | |
1017 | ++done; |
1018 | } |
1019 | |
1020 | break; |
1021 | |
1022 | case L_('s'): /* Read a string. */ |
1023 | if (!(flags & LONG)) |
1024 | { |
1025 | STRING_ARG (str, char, 100); |
1026 | |
1027 | c = inchar (); |
1028 | if (__glibc_unlikely (c == EOF)) |
1029 | input_error (); |
1030 | |
1031 | #ifdef COMPILE_WSCANF |
1032 | memset (&state, '\0', sizeof (state)); |
1033 | #endif |
1034 | |
1035 | do |
1036 | { |
1037 | if (ISSPACE (c)) |
1038 | { |
1039 | ungetc_not_eof (c, s); |
1040 | break; |
1041 | } |
1042 | |
1043 | #ifdef COMPILE_WSCANF |
1044 | /* This is quite complicated. We have to convert the |
1045 | wide characters into multibyte characters and then |
1046 | store them. */ |
1047 | { |
1048 | size_t n; |
1049 | |
1050 | if (!(flags & SUPPRESS) && (flags & MALLOC) |
1051 | && str + MB_CUR_MAX >= *strptr + strsize) |
1052 | { |
1053 | /* We have to enlarge the buffer if the `a' or `m' |
1054 | flag was given. */ |
1055 | size_t strleng = str - *strptr; |
1056 | char *newstr; |
1057 | |
1058 | newstr = (char *) realloc (*strptr, strsize * 2); |
1059 | if (newstr == NULL) |
1060 | { |
1061 | /* Can't allocate that much. Last-ditch |
1062 | effort. */ |
1063 | newstr = (char *) realloc (*strptr, |
1064 | strleng + MB_CUR_MAX); |
1065 | if (newstr == NULL) |
1066 | { |
1067 | if (flags & POSIX_MALLOC) |
1068 | { |
1069 | done = EOF; |
1070 | goto errout; |
1071 | } |
1072 | /* We lose. Oh well. Terminate the |
1073 | string and stop converting, |
1074 | so at least we don't skip any input. */ |
1075 | ((char *) (*strptr))[strleng] = '\0'; |
1076 | strptr = NULL; |
1077 | ++done; |
1078 | conv_error (); |
1079 | } |
1080 | else |
1081 | { |
1082 | *strptr = newstr; |
1083 | str = newstr + strleng; |
1084 | strsize = strleng + MB_CUR_MAX; |
1085 | } |
1086 | } |
1087 | else |
1088 | { |
1089 | *strptr = newstr; |
1090 | str = newstr + strleng; |
1091 | strsize *= 2; |
1092 | } |
1093 | } |
1094 | |
1095 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, |
1096 | &state); |
1097 | if (__glibc_unlikely (n == (size_t) -1)) |
1098 | encode_error (); |
1099 | |
1100 | assert (n <= MB_CUR_MAX); |
1101 | str += n; |
1102 | } |
1103 | #else |
1104 | /* This is easy. */ |
1105 | if (!(flags & SUPPRESS)) |
1106 | { |
1107 | *str++ = c; |
1108 | if ((flags & MALLOC) |
1109 | && (char *) str == *strptr + strsize) |
1110 | { |
1111 | /* Enlarge the buffer. */ |
1112 | str = (char *) realloc (*strptr, 2 * strsize); |
1113 | if (str == NULL) |
1114 | { |
1115 | /* Can't allocate that much. Last-ditch |
1116 | effort. */ |
1117 | str = (char *) realloc (*strptr, strsize + 1); |
1118 | if (str == NULL) |
1119 | { |
1120 | if (flags & POSIX_MALLOC) |
1121 | { |
1122 | done = EOF; |
1123 | goto errout; |
1124 | } |
1125 | /* We lose. Oh well. Terminate the |
1126 | string and stop converting, |
1127 | so at least we don't skip any input. */ |
1128 | ((char *) (*strptr))[strsize - 1] = '\0'; |
1129 | strptr = NULL; |
1130 | ++done; |
1131 | conv_error (); |
1132 | } |
1133 | else |
1134 | { |
1135 | *strptr = (char *) str; |
1136 | str += strsize; |
1137 | ++strsize; |
1138 | } |
1139 | } |
1140 | else |
1141 | { |
1142 | *strptr = (char *) str; |
1143 | str += strsize; |
1144 | strsize *= 2; |
1145 | } |
1146 | } |
1147 | } |
1148 | #endif |
1149 | } |
1150 | while ((width <= 0 || --width > 0) && inchar () != EOF); |
1151 | |
1152 | if (!(flags & SUPPRESS)) |
1153 | { |
1154 | #ifdef COMPILE_WSCANF |
1155 | /* We have to emit the code to get into the initial |
1156 | state. */ |
1157 | char buf[MB_LEN_MAX]; |
1158 | size_t n = __wcrtomb (buf, L'\0', &state); |
1159 | if (n > 0 && (flags & MALLOC) |
1160 | && str + n >= *strptr + strsize) |
1161 | { |
1162 | /* Enlarge the buffer. */ |
1163 | size_t strleng = str - *strptr; |
1164 | char *newstr; |
1165 | |
1166 | newstr = (char *) realloc (*strptr, strleng + n + 1); |
1167 | if (newstr == NULL) |
1168 | { |
1169 | if (flags & POSIX_MALLOC) |
1170 | { |
1171 | done = EOF; |
1172 | goto errout; |
1173 | } |
1174 | /* We lose. Oh well. Terminate the string |
1175 | and stop converting, so at least we don't |
1176 | skip any input. */ |
1177 | ((char *) (*strptr))[strleng] = '\0'; |
1178 | strptr = NULL; |
1179 | ++done; |
1180 | conv_error (); |
1181 | } |
1182 | else |
1183 | { |
1184 | *strptr = newstr; |
1185 | str = newstr + strleng; |
1186 | strsize = strleng + n + 1; |
1187 | } |
1188 | } |
1189 | |
1190 | str = __mempcpy (str, buf, n); |
1191 | #endif |
1192 | *str++ = '\0'; |
1193 | |
1194 | if ((flags & MALLOC) && str - *strptr != strsize) |
1195 | { |
1196 | char *cp = (char *) realloc (*strptr, str - *strptr); |
1197 | if (cp != NULL) |
1198 | *strptr = cp; |
1199 | } |
1200 | strptr = NULL; |
1201 | |
1202 | ++done; |
1203 | } |
1204 | break; |
1205 | } |
1206 | /* FALLTHROUGH */ |
1207 | |
1208 | case L_('S'): |
1209 | { |
1210 | #ifndef COMPILE_WSCANF |
1211 | mbstate_t cstate; |
1212 | #endif |
1213 | |
1214 | /* Wide character string. */ |
1215 | STRING_ARG (wstr, wchar_t, 100); |
1216 | |
1217 | c = inchar (); |
1218 | if (__builtin_expect (c == EOF, 0)) |
1219 | input_error (); |
1220 | |
1221 | #ifndef COMPILE_WSCANF |
1222 | memset (&cstate, '\0', sizeof (cstate)); |
1223 | #endif |
1224 | |
1225 | do |
1226 | { |
1227 | if (ISSPACE (c)) |
1228 | { |
1229 | ungetc_not_eof (c, s); |
1230 | break; |
1231 | } |
1232 | |
1233 | #ifdef COMPILE_WSCANF |
1234 | /* This is easy. */ |
1235 | if (!(flags & SUPPRESS)) |
1236 | { |
1237 | *wstr++ = c; |
1238 | if ((flags & MALLOC) |
1239 | && wstr == (wchar_t *) *strptr + strsize) |
1240 | { |
1241 | /* Enlarge the buffer. */ |
1242 | wstr = (wchar_t *) realloc (*strptr, |
1243 | (2 * strsize) |
1244 | * sizeof (wchar_t)); |
1245 | if (wstr == NULL) |
1246 | { |
1247 | /* Can't allocate that much. Last-ditch |
1248 | effort. */ |
1249 | wstr = (wchar_t *) realloc (*strptr, |
1250 | (strsize + 1) |
1251 | * sizeof (wchar_t)); |
1252 | if (wstr == NULL) |
1253 | { |
1254 | if (flags & POSIX_MALLOC) |
1255 | { |
1256 | done = EOF; |
1257 | goto errout; |
1258 | } |
1259 | /* We lose. Oh well. Terminate the string |
1260 | and stop converting, so at least we don't |
1261 | skip any input. */ |
1262 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
1263 | strptr = NULL; |
1264 | ++done; |
1265 | conv_error (); |
1266 | } |
1267 | else |
1268 | { |
1269 | *strptr = (char *) wstr; |
1270 | wstr += strsize; |
1271 | ++strsize; |
1272 | } |
1273 | } |
1274 | else |
1275 | { |
1276 | *strptr = (char *) wstr; |
1277 | wstr += strsize; |
1278 | strsize *= 2; |
1279 | } |
1280 | } |
1281 | } |
1282 | #else |
1283 | { |
1284 | char buf[1]; |
1285 | |
1286 | buf[0] = c; |
1287 | |
1288 | while (1) |
1289 | { |
1290 | size_t n; |
1291 | |
1292 | n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, |
1293 | buf, 1, &cstate); |
1294 | |
1295 | if (n == (size_t) -2) |
1296 | { |
1297 | /* Possibly correct character, just not enough |
1298 | input. */ |
1299 | if (__glibc_unlikely (inchar () == EOF)) |
1300 | encode_error (); |
1301 | |
1302 | buf[0] = c; |
1303 | continue; |
1304 | } |
1305 | |
1306 | if (__glibc_unlikely (n != 1)) |
1307 | encode_error (); |
1308 | |
1309 | /* We have a match. */ |
1310 | ++wstr; |
1311 | break; |
1312 | } |
1313 | |
1314 | if (!(flags & SUPPRESS) && (flags & MALLOC) |
1315 | && wstr == (wchar_t *) *strptr + strsize) |
1316 | { |
1317 | /* Enlarge the buffer. */ |
1318 | wstr = (wchar_t *) realloc (*strptr, |
1319 | (2 * strsize |
1320 | * sizeof (wchar_t))); |
1321 | if (wstr == NULL) |
1322 | { |
1323 | /* Can't allocate that much. Last-ditch effort. */ |
1324 | wstr = (wchar_t *) realloc (*strptr, |
1325 | ((strsize + 1) |
1326 | * sizeof (wchar_t))); |
1327 | if (wstr == NULL) |
1328 | { |
1329 | if (flags & POSIX_MALLOC) |
1330 | { |
1331 | done = EOF; |
1332 | goto errout; |
1333 | } |
1334 | /* We lose. Oh well. Terminate the |
1335 | string and stop converting, so at |
1336 | least we don't skip any input. */ |
1337 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
1338 | strptr = NULL; |
1339 | ++done; |
1340 | conv_error (); |
1341 | } |
1342 | else |
1343 | { |
1344 | *strptr = (char *) wstr; |
1345 | wstr += strsize; |
1346 | ++strsize; |
1347 | } |
1348 | } |
1349 | else |
1350 | { |
1351 | *strptr = (char *) wstr; |
1352 | wstr += strsize; |
1353 | strsize *= 2; |
1354 | } |
1355 | } |
1356 | } |
1357 | #endif |
1358 | } |
1359 | while ((width <= 0 || --width > 0) && inchar () != EOF); |
1360 | |
1361 | if (!(flags & SUPPRESS)) |
1362 | { |
1363 | *wstr++ = L'\0'; |
1364 | |
1365 | if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) |
1366 | { |
1367 | wchar_t *cp = (wchar_t *) realloc (*strptr, |
1368 | ((wstr |
1369 | - (wchar_t *) *strptr) |
1370 | * sizeof(wchar_t))); |
1371 | if (cp != NULL) |
1372 | *strptr = (char *) cp; |
1373 | } |
1374 | strptr = NULL; |
1375 | |
1376 | ++done; |
1377 | } |
1378 | } |
1379 | break; |
1380 | |
1381 | case L_('x'): /* Hexadecimal integer. */ |
1382 | case L_('X'): /* Ditto. */ |
1383 | base = 16; |
1384 | goto number; |
1385 | |
1386 | case L_('o'): /* Octal integer. */ |
1387 | base = 8; |
1388 | goto number; |
1389 | |
1390 | case L_('u'): /* Unsigned decimal integer. */ |
1391 | base = 10; |
1392 | goto number; |
1393 | |
1394 | case L_('d'): /* Signed decimal integer. */ |
1395 | base = 10; |
1396 | flags |= NUMBER_SIGNED; |
1397 | goto number; |
1398 | |
1399 | case L_('i'): /* Generic number. */ |
1400 | base = 0; |
1401 | flags |= NUMBER_SIGNED; |
1402 | |
1403 | number: |
1404 | c = inchar (); |
1405 | if (__glibc_unlikely (c == EOF)) |
1406 | input_error (); |
1407 | |
1408 | /* Check for a sign. */ |
1409 | if (c == L_('-') || c == L_('+')) |
1410 | { |
1411 | char_buffer_add (&charbuf, c); |
1412 | if (width > 0) |
1413 | --width; |
1414 | c = inchar (); |
1415 | } |
1416 | |
1417 | /* Look for a leading indication of base. */ |
1418 | if (width != 0 && c == L_('0')) |
1419 | { |
1420 | if (width > 0) |
1421 | --width; |
1422 | |
1423 | char_buffer_add (&charbuf, c); |
1424 | c = inchar (); |
1425 | |
1426 | if (width != 0 && TOLOWER (c) == L_('x')) |
1427 | { |
1428 | if (base == 0) |
1429 | base = 16; |
1430 | if (base == 16) |
1431 | { |
1432 | if (width > 0) |
1433 | --width; |
1434 | c = inchar (); |
1435 | } |
1436 | } |
1437 | else if (base == 0) |
1438 | base = 8; |
1439 | } |
1440 | |
1441 | if (base == 0) |
1442 | base = 10; |
1443 | |
1444 | if (base == 10 && __builtin_expect ((flags & I18N) != 0, 0)) |
1445 | { |
1446 | int from_level; |
1447 | int to_level; |
1448 | int level; |
1449 | #ifdef COMPILE_WSCANF |
1450 | const wchar_t *wcdigits[10]; |
1451 | const wchar_t *wcdigits_extended[10]; |
1452 | #else |
1453 | const char *mbdigits[10]; |
1454 | const char *mbdigits_extended[10]; |
1455 | #endif |
1456 | /* "to_inpunct" is a map from ASCII digits to their |
1457 | equivalent in locale. This is defined for locales |
1458 | which use an extra digits set. */ |
1459 | wctrans_t map = __wctrans ("to_inpunct" ); |
1460 | int n; |
1461 | |
1462 | from_level = 0; |
1463 | #ifdef COMPILE_WSCANF |
1464 | to_level = _NL_CURRENT_WORD (LC_CTYPE, |
1465 | _NL_CTYPE_INDIGITS_WC_LEN) - 1; |
1466 | #else |
1467 | to_level = (uint32_t) curctype->values[_NL_ITEM_INDEX (_NL_CTYPE_INDIGITS_MB_LEN)].word - 1; |
1468 | #endif |
1469 | |
1470 | /* Get the alternative digit forms if there are any. */ |
1471 | if (__glibc_unlikely (map != NULL)) |
1472 | { |
1473 | /* Adding new level for extra digits set in locale file. */ |
1474 | ++to_level; |
1475 | |
1476 | for (n = 0; n < 10; ++n) |
1477 | { |
1478 | #ifdef COMPILE_WSCANF |
1479 | wcdigits[n] = (const wchar_t *) |
1480 | _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); |
1481 | |
1482 | wchar_t *wc_extended = (wchar_t *) |
1483 | alloca ((to_level + 2) * sizeof (wchar_t)); |
1484 | __wmemcpy (wc_extended, wcdigits[n], to_level); |
1485 | wc_extended[to_level] = __towctrans (L'0' + n, map); |
1486 | wc_extended[to_level + 1] = '\0'; |
1487 | wcdigits_extended[n] = wc_extended; |
1488 | #else |
1489 | mbdigits[n] |
1490 | = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; |
1491 | |
1492 | /* Get the equivalent wide char in map. */ |
1493 | wint_t = __towctrans (L'0' + n, map); |
1494 | |
1495 | /* Convert it to multibyte representation. */ |
1496 | mbstate_t state; |
1497 | memset (&state, '\0', sizeof (state)); |
1498 | |
1499 | char [MB_LEN_MAX]; |
1500 | size_t mblen |
1501 | = __wcrtomb (extra_mbdigit, extra_wcdigit, &state); |
1502 | |
1503 | if (mblen == (size_t) -1) |
1504 | { |
1505 | /* Ignore this new level. */ |
1506 | map = NULL; |
1507 | break; |
1508 | } |
1509 | |
1510 | /* Calculate the length of mbdigits[n]. */ |
1511 | const char *last_char = mbdigits[n]; |
1512 | for (level = 0; level < to_level; ++level) |
1513 | last_char = strchr (last_char, '\0') + 1; |
1514 | |
1515 | size_t mbdigits_len = last_char - mbdigits[n]; |
1516 | |
1517 | /* Allocate memory for extended multibyte digit. */ |
1518 | char *mb_extended; |
1519 | mb_extended = (char *) alloca (mbdigits_len + mblen + 1); |
1520 | |
1521 | /* And get the mbdigits + extra_digit string. */ |
1522 | *(char *) __mempcpy (__mempcpy (mb_extended, mbdigits[n], |
1523 | mbdigits_len), |
1524 | extra_mbdigit, mblen) = '\0'; |
1525 | mbdigits_extended[n] = mb_extended; |
1526 | #endif |
1527 | } |
1528 | } |
1529 | |
1530 | /* Read the number into workspace. */ |
1531 | while (c != EOF && width != 0) |
1532 | { |
1533 | /* In this round we get the pointer to the digit strings |
1534 | and also perform the first round of comparisons. */ |
1535 | for (n = 0; n < 10; ++n) |
1536 | { |
1537 | /* Get the string for the digits with value N. */ |
1538 | #ifdef COMPILE_WSCANF |
1539 | |
1540 | /* wcdigits_extended[] is fully set in the loop |
1541 | above, but the test for "map != NULL" is done |
1542 | inside the loop here and outside the loop there. */ |
1543 | DIAG_PUSH_NEEDS_COMMENT; |
1544 | DIAG_IGNORE_NEEDS_COMMENT (4.7, "-Wmaybe-uninitialized" ); |
1545 | |
1546 | if (__glibc_unlikely (map != NULL)) |
1547 | wcdigits[n] = wcdigits_extended[n]; |
1548 | else |
1549 | wcdigits[n] = (const wchar_t *) |
1550 | _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); |
1551 | wcdigits[n] += from_level; |
1552 | |
1553 | DIAG_POP_NEEDS_COMMENT; |
1554 | |
1555 | if (c == (wint_t) *wcdigits[n]) |
1556 | { |
1557 | to_level = from_level; |
1558 | break; |
1559 | } |
1560 | |
1561 | /* Advance the pointer to the next string. */ |
1562 | ++wcdigits[n]; |
1563 | #else |
1564 | const char *cmpp; |
1565 | int avail = width > 0 ? width : INT_MAX; |
1566 | |
1567 | if (__glibc_unlikely (map != NULL)) |
1568 | mbdigits[n] = mbdigits_extended[n]; |
1569 | else |
1570 | mbdigits[n] |
1571 | = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; |
1572 | |
1573 | for (level = 0; level < from_level; level++) |
1574 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; |
1575 | |
1576 | cmpp = mbdigits[n]; |
1577 | while ((unsigned char) *cmpp == c && avail >= 0) |
1578 | { |
1579 | if (*++cmpp == '\0') |
1580 | break; |
1581 | else |
1582 | { |
1583 | if (avail == 0 || inchar () == EOF) |
1584 | break; |
1585 | --avail; |
1586 | } |
1587 | } |
1588 | |
1589 | if (*cmpp == '\0') |
1590 | { |
1591 | if (width > 0) |
1592 | width = avail; |
1593 | to_level = from_level; |
1594 | break; |
1595 | } |
1596 | |
1597 | /* We are pushing all read characters back. */ |
1598 | if (cmpp > mbdigits[n]) |
1599 | { |
1600 | ungetc (c, s); |
1601 | while (--cmpp > mbdigits[n]) |
1602 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1603 | c = (unsigned char) *cmpp; |
1604 | } |
1605 | |
1606 | /* Advance the pointer to the next string. */ |
1607 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; |
1608 | #endif |
1609 | } |
1610 | |
1611 | if (n == 10) |
1612 | { |
1613 | /* Have not yet found the digit. */ |
1614 | for (level = from_level + 1; level <= to_level; ++level) |
1615 | { |
1616 | /* Search all ten digits of this level. */ |
1617 | for (n = 0; n < 10; ++n) |
1618 | { |
1619 | #ifdef COMPILE_WSCANF |
1620 | if (c == (wint_t) *wcdigits[n]) |
1621 | break; |
1622 | |
1623 | /* Advance the pointer to the next string. */ |
1624 | ++wcdigits[n]; |
1625 | #else |
1626 | const char *cmpp; |
1627 | int avail = width > 0 ? width : INT_MAX; |
1628 | |
1629 | cmpp = mbdigits[n]; |
1630 | while ((unsigned char) *cmpp == c && avail >= 0) |
1631 | { |
1632 | if (*++cmpp == '\0') |
1633 | break; |
1634 | else |
1635 | { |
1636 | if (avail == 0 || inchar () == EOF) |
1637 | break; |
1638 | --avail; |
1639 | } |
1640 | } |
1641 | |
1642 | if (*cmpp == '\0') |
1643 | { |
1644 | if (width > 0) |
1645 | width = avail; |
1646 | break; |
1647 | } |
1648 | |
1649 | /* We are pushing all read characters back. */ |
1650 | if (cmpp > mbdigits[n]) |
1651 | { |
1652 | ungetc (c, s); |
1653 | while (--cmpp > mbdigits[n]) |
1654 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1655 | c = (unsigned char) *cmpp; |
1656 | } |
1657 | |
1658 | /* Advance the pointer to the next string. */ |
1659 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; |
1660 | #endif |
1661 | } |
1662 | |
1663 | if (n < 10) |
1664 | { |
1665 | /* Found it. */ |
1666 | from_level = level; |
1667 | to_level = level; |
1668 | break; |
1669 | } |
1670 | } |
1671 | } |
1672 | |
1673 | if (n < 10) |
1674 | c = L_('0') + n; |
1675 | else if (flags & GROUP) |
1676 | { |
1677 | /* Try matching against the thousands separator. */ |
1678 | #ifdef COMPILE_WSCANF |
1679 | if (c != thousands) |
1680 | break; |
1681 | #else |
1682 | const char *cmpp = thousands; |
1683 | int avail = width > 0 ? width : INT_MAX; |
1684 | |
1685 | while ((unsigned char) *cmpp == c && avail >= 0) |
1686 | { |
1687 | char_buffer_add (&charbuf, c); |
1688 | if (*++cmpp == '\0') |
1689 | break; |
1690 | else |
1691 | { |
1692 | if (avail == 0 || inchar () == EOF) |
1693 | break; |
1694 | --avail; |
1695 | } |
1696 | } |
1697 | |
1698 | if (char_buffer_error (&charbuf)) |
1699 | { |
1700 | __set_errno (ENOMEM); |
1701 | done = EOF; |
1702 | goto errout; |
1703 | } |
1704 | |
1705 | if (*cmpp != '\0') |
1706 | { |
1707 | /* We are pushing all read characters back. */ |
1708 | if (cmpp > thousands) |
1709 | { |
1710 | charbuf.current -= cmpp - thousands; |
1711 | ungetc (c, s); |
1712 | while (--cmpp > thousands) |
1713 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1714 | c = (unsigned char) *cmpp; |
1715 | } |
1716 | break; |
1717 | } |
1718 | |
1719 | if (width > 0) |
1720 | width = avail; |
1721 | |
1722 | /* The last thousands character will be added back by |
1723 | the char_buffer_add below. */ |
1724 | --charbuf.current; |
1725 | #endif |
1726 | } |
1727 | else |
1728 | break; |
1729 | |
1730 | char_buffer_add (&charbuf, c); |
1731 | if (width > 0) |
1732 | --width; |
1733 | |
1734 | c = inchar (); |
1735 | } |
1736 | } |
1737 | else |
1738 | /* Read the number into workspace. */ |
1739 | while (c != EOF && width != 0) |
1740 | { |
1741 | if (base == 16) |
1742 | { |
1743 | if (!ISXDIGIT (c)) |
1744 | break; |
1745 | } |
1746 | else if (!ISDIGIT (c) || (int) (c - L_('0')) >= base) |
1747 | { |
1748 | if (base == 10 && (flags & GROUP)) |
1749 | { |
1750 | /* Try matching against the thousands separator. */ |
1751 | #ifdef COMPILE_WSCANF |
1752 | if (c != thousands) |
1753 | break; |
1754 | #else |
1755 | const char *cmpp = thousands; |
1756 | int avail = width > 0 ? width : INT_MAX; |
1757 | |
1758 | while ((unsigned char) *cmpp == c && avail >= 0) |
1759 | { |
1760 | char_buffer_add (&charbuf, c); |
1761 | if (*++cmpp == '\0') |
1762 | break; |
1763 | else |
1764 | { |
1765 | if (avail == 0 || inchar () == EOF) |
1766 | break; |
1767 | --avail; |
1768 | } |
1769 | } |
1770 | |
1771 | if (char_buffer_error (&charbuf)) |
1772 | { |
1773 | __set_errno (ENOMEM); |
1774 | done = EOF; |
1775 | goto errout; |
1776 | } |
1777 | |
1778 | if (*cmpp != '\0') |
1779 | { |
1780 | /* We are pushing all read characters back. */ |
1781 | if (cmpp > thousands) |
1782 | { |
1783 | charbuf.current -= cmpp - thousands; |
1784 | ungetc (c, s); |
1785 | while (--cmpp > thousands) |
1786 | ungetc_not_eof ((unsigned char) *cmpp, s); |
1787 | c = (unsigned char) *cmpp; |
1788 | } |
1789 | break; |
1790 | } |
1791 | |
1792 | if (width > 0) |
1793 | width = avail; |
1794 | |
1795 | /* The last thousands character will be added back by |
1796 | the char_buffer_add below. */ |
1797 | --charbuf.current; |
1798 | #endif |
1799 | } |
1800 | else |
1801 | break; |
1802 | } |
1803 | char_buffer_add (&charbuf, c); |
1804 | if (width > 0) |
1805 | --width; |
1806 | |
1807 | c = inchar (); |
1808 | } |
1809 | |
1810 | if (char_buffer_error (&charbuf)) |
1811 | { |
1812 | __set_errno (ENOMEM); |
1813 | done = EOF; |
1814 | goto errout; |
1815 | } |
1816 | |
1817 | if (char_buffer_size (&charbuf) == 0 |
1818 | || (char_buffer_size (&charbuf) == 1 |
1819 | && (char_buffer_start (&charbuf)[0] == L_('+') |
1820 | || char_buffer_start (&charbuf)[0] == L_('-')))) |
1821 | { |
1822 | /* There was no number. If we are supposed to read a pointer |
1823 | we must recognize "(nil)" as well. */ |
1824 | if (__builtin_expect (char_buffer_size (&charbuf) == 0 |
1825 | && (flags & READ_POINTER) |
1826 | && (width < 0 || width >= 5) |
1827 | && c == '(' |
1828 | && TOLOWER (inchar ()) == L_('n') |
1829 | && TOLOWER (inchar ()) == L_('i') |
1830 | && TOLOWER (inchar ()) == L_('l') |
1831 | && inchar () == L_(')'), 1)) |
1832 | /* We must produce the value of a NULL pointer. A single |
1833 | '0' digit is enough. */ |
1834 | char_buffer_add (&charbuf, L_('0')); |
1835 | else |
1836 | { |
1837 | /* The last read character is not part of the number |
1838 | anymore. */ |
1839 | ungetc (c, s); |
1840 | |
1841 | conv_error (); |
1842 | } |
1843 | } |
1844 | else |
1845 | /* The just read character is not part of the number anymore. */ |
1846 | ungetc (c, s); |
1847 | |
1848 | /* Convert the number. */ |
1849 | char_buffer_add (&charbuf, L_('\0')); |
1850 | if (char_buffer_error (&charbuf)) |
1851 | { |
1852 | __set_errno (ENOMEM); |
1853 | done = EOF; |
1854 | goto errout; |
1855 | } |
1856 | if (need_longlong && (flags & LONGDBL)) |
1857 | { |
1858 | if (flags & NUMBER_SIGNED) |
1859 | num.q = __strtoll_internal |
1860 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1861 | else |
1862 | num.uq = __strtoull_internal |
1863 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1864 | } |
1865 | else |
1866 | { |
1867 | if (flags & NUMBER_SIGNED) |
1868 | num.l = __strtol_internal |
1869 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1870 | else |
1871 | num.ul = __strtoul_internal |
1872 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); |
1873 | } |
1874 | if (__glibc_unlikely (char_buffer_start (&charbuf) == tw)) |
1875 | conv_error (); |
1876 | |
1877 | if (!(flags & SUPPRESS)) |
1878 | { |
1879 | if (flags & NUMBER_SIGNED) |
1880 | { |
1881 | if (need_longlong && (flags & LONGDBL)) |
1882 | *ARG (LONGLONG int *) = num.q; |
1883 | else if (need_long && (flags & LONG)) |
1884 | *ARG (long int *) = num.l; |
1885 | else if (flags & SHORT) |
1886 | *ARG (short int *) = (short int) num.l; |
1887 | else if (!(flags & CHAR)) |
1888 | *ARG (int *) = (int) num.l; |
1889 | else |
1890 | *ARG (signed char *) = (signed char) num.ul; |
1891 | } |
1892 | else |
1893 | { |
1894 | if (need_longlong && (flags & LONGDBL)) |
1895 | *ARG (unsigned LONGLONG int *) = num.uq; |
1896 | else if (need_long && (flags & LONG)) |
1897 | *ARG (unsigned long int *) = num.ul; |
1898 | else if (flags & SHORT) |
1899 | *ARG (unsigned short int *) |
1900 | = (unsigned short int) num.ul; |
1901 | else if (!(flags & CHAR)) |
1902 | *ARG (unsigned int *) = (unsigned int) num.ul; |
1903 | else |
1904 | *ARG (unsigned char *) = (unsigned char) num.ul; |
1905 | } |
1906 | ++done; |
1907 | } |
1908 | break; |
1909 | |
1910 | case L_('e'): /* Floating-point numbers. */ |
1911 | case L_('E'): |
1912 | case L_('f'): |
1913 | case L_('F'): |
1914 | case L_('g'): |
1915 | case L_('G'): |
1916 | case L_('a'): |
1917 | case L_('A'): |
1918 | c = inchar (); |
1919 | if (width > 0) |
1920 | --width; |
1921 | if (__glibc_unlikely (c == EOF)) |
1922 | input_error (); |
1923 | |
1924 | got_digit = got_dot = got_e = 0; |
1925 | |
1926 | /* Check for a sign. */ |
1927 | if (c == L_('-') || c == L_('+')) |
1928 | { |
1929 | negative = c == L_('-'); |
1930 | if (__glibc_unlikely (width == 0 || inchar () == EOF)) |
1931 | /* EOF is only an input error before we read any chars. */ |
1932 | conv_error (); |
1933 | if (width > 0) |
1934 | --width; |
1935 | } |
1936 | else |
1937 | negative = 0; |
1938 | |
1939 | /* Take care for the special arguments "nan" and "inf". */ |
1940 | if (TOLOWER (c) == L_('n')) |
1941 | { |
1942 | /* Maybe "nan". */ |
1943 | char_buffer_add (&charbuf, c); |
1944 | if (__builtin_expect (width == 0 |
1945 | || inchar () == EOF |
1946 | || TOLOWER (c) != L_('a'), 0)) |
1947 | conv_error (); |
1948 | if (width > 0) |
1949 | --width; |
1950 | char_buffer_add (&charbuf, c); |
1951 | if (__builtin_expect (width == 0 |
1952 | || inchar () == EOF |
1953 | || TOLOWER (c) != L_('n'), 0)) |
1954 | conv_error (); |
1955 | if (width > 0) |
1956 | --width; |
1957 | char_buffer_add (&charbuf, c); |
1958 | /* It is "nan". */ |
1959 | goto scan_float; |
1960 | } |
1961 | else if (TOLOWER (c) == L_('i')) |
1962 | { |
1963 | /* Maybe "inf" or "infinity". */ |
1964 | char_buffer_add (&charbuf, c); |
1965 | if (__builtin_expect (width == 0 |
1966 | || inchar () == EOF |
1967 | || TOLOWER (c) != L_('n'), 0)) |
1968 | conv_error (); |
1969 | if (width > 0) |
1970 | --width; |
1971 | char_buffer_add (&charbuf, c); |
1972 | if (__builtin_expect (width == 0 |
1973 | || inchar () == EOF |
1974 | || TOLOWER (c) != L_('f'), 0)) |
1975 | conv_error (); |
1976 | if (width > 0) |
1977 | --width; |
1978 | char_buffer_add (&charbuf, c); |
1979 | /* It is as least "inf". */ |
1980 | if (width != 0 && inchar () != EOF) |
1981 | { |
1982 | if (TOLOWER (c) == L_('i')) |
1983 | { |
1984 | if (width > 0) |
1985 | --width; |
1986 | /* Now we have to read the rest as well. */ |
1987 | char_buffer_add (&charbuf, c); |
1988 | if (__builtin_expect (width == 0 |
1989 | || inchar () == EOF |
1990 | || TOLOWER (c) != L_('n'), 0)) |
1991 | conv_error (); |
1992 | if (width > 0) |
1993 | --width; |
1994 | char_buffer_add (&charbuf, c); |
1995 | if (__builtin_expect (width == 0 |
1996 | || inchar () == EOF |
1997 | || TOLOWER (c) != L_('i'), 0)) |
1998 | conv_error (); |
1999 | if (width > 0) |
2000 | --width; |
2001 | char_buffer_add (&charbuf, c); |
2002 | if (__builtin_expect (width == 0 |
2003 | || inchar () == EOF |
2004 | || TOLOWER (c) != L_('t'), 0)) |
2005 | conv_error (); |
2006 | if (width > 0) |
2007 | --width; |
2008 | char_buffer_add (&charbuf, c); |
2009 | if (__builtin_expect (width == 0 |
2010 | || inchar () == EOF |
2011 | || TOLOWER (c) != L_('y'), 0)) |
2012 | conv_error (); |
2013 | if (width > 0) |
2014 | --width; |
2015 | char_buffer_add (&charbuf, c); |
2016 | } |
2017 | else |
2018 | /* Never mind. */ |
2019 | ungetc (c, s); |
2020 | } |
2021 | goto scan_float; |
2022 | } |
2023 | |
2024 | exp_char = L_('e'); |
2025 | if (width != 0 && c == L_('0')) |
2026 | { |
2027 | char_buffer_add (&charbuf, c); |
2028 | c = inchar (); |
2029 | if (width > 0) |
2030 | --width; |
2031 | if (width != 0 && TOLOWER (c) == L_('x')) |
2032 | { |
2033 | /* It is a number in hexadecimal format. */ |
2034 | char_buffer_add (&charbuf, c); |
2035 | |
2036 | flags |= HEXA_FLOAT; |
2037 | exp_char = L_('p'); |
2038 | |
2039 | /* Grouping is not allowed. */ |
2040 | flags &= ~GROUP; |
2041 | c = inchar (); |
2042 | if (width > 0) |
2043 | --width; |
2044 | } |
2045 | else |
2046 | got_digit = 1; |
2047 | } |
2048 | |
2049 | while (1) |
2050 | { |
2051 | if (char_buffer_error (&charbuf)) |
2052 | { |
2053 | __set_errno (ENOMEM); |
2054 | done = EOF; |
2055 | goto errout; |
2056 | } |
2057 | if (ISDIGIT (c)) |
2058 | { |
2059 | char_buffer_add (&charbuf, c); |
2060 | got_digit = 1; |
2061 | } |
2062 | else if (!got_e && (flags & HEXA_FLOAT) && ISXDIGIT (c)) |
2063 | { |
2064 | char_buffer_add (&charbuf, c); |
2065 | got_digit = 1; |
2066 | } |
2067 | else if (got_e && charbuf.current[-1] == exp_char |
2068 | && (c == L_('-') || c == L_('+'))) |
2069 | char_buffer_add (&charbuf, c); |
2070 | else if (got_digit && !got_e |
2071 | && (CHAR_T) TOLOWER (c) == exp_char) |
2072 | { |
2073 | char_buffer_add (&charbuf, exp_char); |
2074 | got_e = got_dot = 1; |
2075 | } |
2076 | else |
2077 | { |
2078 | #ifdef COMPILE_WSCANF |
2079 | if (! got_dot && c == decimal) |
2080 | { |
2081 | char_buffer_add (&charbuf, c); |
2082 | got_dot = 1; |
2083 | } |
2084 | else if ((flags & GROUP) != 0 && ! got_dot && c == thousands) |
2085 | char_buffer_add (&charbuf, c); |
2086 | else |
2087 | { |
2088 | /* The last read character is not part of the number |
2089 | anymore. */ |
2090 | ungetc (c, s); |
2091 | break; |
2092 | } |
2093 | #else |
2094 | const char *cmpp = decimal; |
2095 | int avail = width > 0 ? width : INT_MAX; |
2096 | |
2097 | if (! got_dot) |
2098 | { |
2099 | while ((unsigned char) *cmpp == c && avail >= 0) |
2100 | if (*++cmpp == '\0') |
2101 | break; |
2102 | else |
2103 | { |
2104 | if (avail == 0 || inchar () == EOF) |
2105 | break; |
2106 | --avail; |
2107 | } |
2108 | } |
2109 | |
2110 | if (*cmpp == '\0') |
2111 | { |
2112 | /* Add all the characters. */ |
2113 | for (cmpp = decimal; *cmpp != '\0'; ++cmpp) |
2114 | char_buffer_add (&charbuf, (unsigned char) *cmpp); |
2115 | if (width > 0) |
2116 | width = avail; |
2117 | got_dot = 1; |
2118 | } |
2119 | else |
2120 | { |
2121 | /* Figure out whether it is a thousands separator. |
2122 | There is one problem: we possibly read more than |
2123 | one character. We cannot push them back but since |
2124 | we know that parts of the `decimal' string matched, |
2125 | we can compare against it. */ |
2126 | const char *cmp2p = thousands; |
2127 | |
2128 | if ((flags & GROUP) != 0 && ! got_dot) |
2129 | { |
2130 | while (cmp2p - thousands < cmpp - decimal |
2131 | && *cmp2p == decimal[cmp2p - thousands]) |
2132 | ++cmp2p; |
2133 | if (cmp2p - thousands == cmpp - decimal) |
2134 | { |
2135 | while ((unsigned char) *cmp2p == c && avail >= 0) |
2136 | if (*++cmp2p == '\0') |
2137 | break; |
2138 | else |
2139 | { |
2140 | if (avail == 0 || inchar () == EOF) |
2141 | break; |
2142 | --avail; |
2143 | } |
2144 | } |
2145 | } |
2146 | |
2147 | if (cmp2p != NULL && *cmp2p == '\0') |
2148 | { |
2149 | /* Add all the characters. */ |
2150 | for (cmpp = thousands; *cmpp != '\0'; ++cmpp) |
2151 | char_buffer_add (&charbuf, (unsigned char) *cmpp); |
2152 | if (width > 0) |
2153 | width = avail; |
2154 | } |
2155 | else |
2156 | { |
2157 | /* The last read character is not part of the number |
2158 | anymore. */ |
2159 | ungetc (c, s); |
2160 | break; |
2161 | } |
2162 | } |
2163 | #endif |
2164 | } |
2165 | |
2166 | if (width == 0 || inchar () == EOF) |
2167 | break; |
2168 | |
2169 | if (width > 0) |
2170 | --width; |
2171 | } |
2172 | |
2173 | if (char_buffer_error (&charbuf)) |
2174 | { |
2175 | __set_errno (ENOMEM); |
2176 | done = EOF; |
2177 | goto errout; |
2178 | } |
2179 | |
2180 | wctrans_t map; |
2181 | if (__builtin_expect ((flags & I18N) != 0, 0) |
2182 | /* Hexadecimal floats make no sense, fixing localized |
2183 | digits with ASCII letters. */ |
2184 | && !(flags & HEXA_FLOAT) |
2185 | /* Minimum requirement. */ |
2186 | && (char_buffer_size (&charbuf) == 0 || got_dot) |
2187 | && (map = __wctrans ("to_inpunct" )) != NULL) |
2188 | { |
2189 | /* Reget the first character. */ |
2190 | inchar (); |
2191 | |
2192 | /* Localized digits, decimal points, and thousands |
2193 | separator. */ |
2194 | wint_t wcdigits[12]; |
2195 | |
2196 | /* First get decimal equivalent to check if we read it |
2197 | or not. */ |
2198 | wcdigits[11] = __towctrans (L'.', map); |
2199 | |
2200 | /* If we have not read any character or have just read |
2201 | locale decimal point which matches the decimal point |
2202 | for localized FP numbers, then we may have localized |
2203 | digits. Note, we test GOT_DOT above. */ |
2204 | #ifdef COMPILE_WSCANF |
2205 | if (char_buffer_size (&charbuf) == 0 |
2206 | || (char_buffer_size (&charbuf) == 1 |
2207 | && wcdigits[11] == decimal)) |
2208 | #else |
2209 | char mbdigits[12][MB_LEN_MAX + 1]; |
2210 | |
2211 | mbstate_t state; |
2212 | memset (&state, '\0', sizeof (state)); |
2213 | |
2214 | bool match_so_far = char_buffer_size (&charbuf) == 0; |
2215 | size_t mblen = __wcrtomb (mbdigits[11], wcdigits[11], &state); |
2216 | if (mblen != (size_t) -1) |
2217 | { |
2218 | mbdigits[11][mblen] = '\0'; |
2219 | match_so_far |= |
2220 | (char_buffer_size (&charbuf) == strlen (decimal) |
2221 | && strcmp (decimal, mbdigits[11]) == 0); |
2222 | } |
2223 | else |
2224 | { |
2225 | size_t decimal_len = strlen (decimal); |
2226 | /* This should always be the case but the data comes |
2227 | from a file. */ |
2228 | if (decimal_len <= MB_LEN_MAX) |
2229 | { |
2230 | match_so_far |= char_buffer_size (&charbuf) == decimal_len; |
2231 | memcpy (mbdigits[11], decimal, decimal_len + 1); |
2232 | } |
2233 | else |
2234 | match_so_far = false; |
2235 | } |
2236 | |
2237 | if (match_so_far) |
2238 | #endif |
2239 | { |
2240 | bool have_locthousands = (flags & GROUP) != 0; |
2241 | |
2242 | /* Now get the digits and the thousands-sep equivalents. */ |
2243 | for (int n = 0; n < 11; ++n) |
2244 | { |
2245 | if (n < 10) |
2246 | wcdigits[n] = __towctrans (L'0' + n, map); |
2247 | else if (n == 10) |
2248 | { |
2249 | wcdigits[10] = __towctrans (L',', map); |
2250 | have_locthousands &= wcdigits[10] != L'\0'; |
2251 | } |
2252 | |
2253 | #ifndef COMPILE_WSCANF |
2254 | memset (&state, '\0', sizeof (state)); |
2255 | |
2256 | size_t mblen = __wcrtomb (mbdigits[n], wcdigits[n], |
2257 | &state); |
2258 | if (mblen == (size_t) -1) |
2259 | { |
2260 | if (n == 10) |
2261 | { |
2262 | if (have_locthousands) |
2263 | { |
2264 | size_t thousands_len = strlen (thousands); |
2265 | if (thousands_len <= MB_LEN_MAX) |
2266 | memcpy (mbdigits[10], thousands, |
2267 | thousands_len + 1); |
2268 | else |
2269 | have_locthousands = false; |
2270 | } |
2271 | } |
2272 | else |
2273 | /* Ignore checking against localized digits. */ |
2274 | goto no_i18nflt; |
2275 | } |
2276 | else |
2277 | mbdigits[n][mblen] = '\0'; |
2278 | #endif |
2279 | } |
2280 | |
2281 | /* Start checking against localized digits, if |
2282 | conversion is done correctly. */ |
2283 | while (1) |
2284 | { |
2285 | if (char_buffer_error (&charbuf)) |
2286 | { |
2287 | __set_errno (ENOMEM); |
2288 | done = EOF; |
2289 | goto errout; |
2290 | } |
2291 | if (got_e && charbuf.current[-1] == exp_char |
2292 | && (c == L_('-') || c == L_('+'))) |
2293 | char_buffer_add (&charbuf, c); |
2294 | else if (char_buffer_size (&charbuf) > 0 && !got_e |
2295 | && (CHAR_T) TOLOWER (c) == exp_char) |
2296 | { |
2297 | char_buffer_add (&charbuf, exp_char); |
2298 | got_e = got_dot = 1; |
2299 | } |
2300 | else |
2301 | { |
2302 | /* Check against localized digits, decimal point, |
2303 | and thousands separator. */ |
2304 | int n; |
2305 | for (n = 0; n < 12; ++n) |
2306 | { |
2307 | #ifdef COMPILE_WSCANF |
2308 | if (c == wcdigits[n]) |
2309 | { |
2310 | if (n < 10) |
2311 | char_buffer_add (&charbuf, L_('0') + n); |
2312 | else if (n == 11 && !got_dot) |
2313 | { |
2314 | char_buffer_add (&charbuf, decimal); |
2315 | got_dot = 1; |
2316 | } |
2317 | else if (n == 10 && have_locthousands |
2318 | && ! got_dot) |
2319 | char_buffer_add (&charbuf, thousands); |
2320 | else |
2321 | /* The last read character is not part |
2322 | of the number anymore. */ |
2323 | n = 12; |
2324 | |
2325 | break; |
2326 | } |
2327 | #else |
2328 | const char *cmpp = mbdigits[n]; |
2329 | int avail = width > 0 ? width : INT_MAX; |
2330 | |
2331 | while ((unsigned char) *cmpp == c && avail >= 0) |
2332 | if (*++cmpp == '\0') |
2333 | break; |
2334 | else |
2335 | { |
2336 | if (avail == 0 || inchar () == EOF) |
2337 | break; |
2338 | --avail; |
2339 | } |
2340 | if (*cmpp == '\0') |
2341 | { |
2342 | if (width > 0) |
2343 | width = avail; |
2344 | |
2345 | if (n < 10) |
2346 | char_buffer_add (&charbuf, L_('0') + n); |
2347 | else if (n == 11 && !got_dot) |
2348 | { |
2349 | /* Add all the characters. */ |
2350 | for (cmpp = decimal; *cmpp != '\0'; |
2351 | ++cmpp) |
2352 | char_buffer_add (&charbuf, |
2353 | (unsigned char) *cmpp); |
2354 | |
2355 | got_dot = 1; |
2356 | } |
2357 | else if (n == 10 && (flags & GROUP) != 0 |
2358 | && ! got_dot) |
2359 | { |
2360 | /* Add all the characters. */ |
2361 | for (cmpp = thousands; *cmpp != '\0'; |
2362 | ++cmpp) |
2363 | char_buffer_add (&charbuf, |
2364 | (unsigned char) *cmpp); |
2365 | } |
2366 | else |
2367 | /* The last read character is not part |
2368 | of the number anymore. */ |
2369 | n = 12; |
2370 | |
2371 | break; |
2372 | } |
2373 | |
2374 | /* We are pushing all read characters back. */ |
2375 | if (cmpp > mbdigits[n]) |
2376 | { |
2377 | ungetc (c, s); |
2378 | while (--cmpp > mbdigits[n]) |
2379 | ungetc_not_eof ((unsigned char) *cmpp, s); |
2380 | c = (unsigned char) *cmpp; |
2381 | } |
2382 | #endif |
2383 | } |
2384 | |
2385 | if (n >= 12) |
2386 | { |
2387 | /* The last read character is not part |
2388 | of the number anymore. */ |
2389 | ungetc (c, s); |
2390 | break; |
2391 | } |
2392 | } |
2393 | |
2394 | if (width == 0 || inchar () == EOF) |
2395 | break; |
2396 | |
2397 | if (width > 0) |
2398 | --width; |
2399 | } |
2400 | } |
2401 | |
2402 | #ifndef COMPILE_WSCANF |
2403 | no_i18nflt: |
2404 | ; |
2405 | #endif |
2406 | } |
2407 | |
2408 | if (char_buffer_error (&charbuf)) |
2409 | { |
2410 | __set_errno (ENOMEM); |
2411 | done = EOF; |
2412 | goto errout; |
2413 | } |
2414 | |
2415 | /* Have we read any character? If we try to read a number |
2416 | in hexadecimal notation and we have read only the `0x' |
2417 | prefix this is an error. */ |
2418 | if (__glibc_unlikely (char_buffer_size (&charbuf) == 0 |
2419 | || ((flags & HEXA_FLOAT) |
2420 | && char_buffer_size (&charbuf) == 2))) |
2421 | conv_error (); |
2422 | |
2423 | scan_float: |
2424 | /* Convert the number. */ |
2425 | char_buffer_add (&charbuf, L_('\0')); |
2426 | if (char_buffer_error (&charbuf)) |
2427 | { |
2428 | __set_errno (ENOMEM); |
2429 | done = EOF; |
2430 | goto errout; |
2431 | } |
2432 | if ((flags & LONGDBL) && !__ldbl_is_dbl) |
2433 | { |
2434 | long double d = __strtold_internal |
2435 | (char_buffer_start (&charbuf), &tw, flags & GROUP); |
2436 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) |
2437 | *ARG (long double *) = negative ? -d : d; |
2438 | } |
2439 | else if (flags & (LONG | LONGDBL)) |
2440 | { |
2441 | double d = __strtod_internal |
2442 | (char_buffer_start (&charbuf), &tw, flags & GROUP); |
2443 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) |
2444 | *ARG (double *) = negative ? -d : d; |
2445 | } |
2446 | else |
2447 | { |
2448 | float d = __strtof_internal |
2449 | (char_buffer_start (&charbuf), &tw, flags & GROUP); |
2450 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) |
2451 | *ARG (float *) = negative ? -d : d; |
2452 | } |
2453 | |
2454 | if (__glibc_unlikely (tw == char_buffer_start (&charbuf))) |
2455 | conv_error (); |
2456 | |
2457 | if (!(flags & SUPPRESS)) |
2458 | ++done; |
2459 | break; |
2460 | |
2461 | case L_('['): /* Character class. */ |
2462 | if (flags & LONG) |
2463 | STRING_ARG (wstr, wchar_t, 100); |
2464 | else |
2465 | STRING_ARG (str, char, 100); |
2466 | |
2467 | if (*f == L_('^')) |
2468 | { |
2469 | ++f; |
2470 | not_in = 1; |
2471 | } |
2472 | else |
2473 | not_in = 0; |
2474 | |
2475 | if (width < 0) |
2476 | /* There is no width given so there is also no limit on the |
2477 | number of characters we read. Therefore we set width to |
2478 | a very high value to make the algorithm easier. */ |
2479 | width = INT_MAX; |
2480 | |
2481 | #ifdef COMPILE_WSCANF |
2482 | /* Find the beginning and the end of the scanlist. We are not |
2483 | creating a lookup table since it would have to be too large. |
2484 | Instead we search each time through the string. This is not |
2485 | a constant lookup time but who uses this feature deserves to |
2486 | be punished. */ |
2487 | tw = (wchar_t *) f; /* Marks the beginning. */ |
2488 | |
2489 | if (*f == L']') |
2490 | ++f; |
2491 | |
2492 | while ((fc = *f++) != L'\0' && fc != L']'); |
2493 | |
2494 | if (__glibc_unlikely (fc == L'\0')) |
2495 | conv_error (); |
2496 | wchar_t *twend = (wchar_t *) f - 1; |
2497 | #else |
2498 | /* Fill WP with byte flags indexed by character. |
2499 | We will use this flag map for matching input characters. */ |
2500 | if (!scratch_buffer_set_array_size |
2501 | (&charbuf.scratch, UCHAR_MAX + 1, 1)) |
2502 | { |
2503 | done = EOF; |
2504 | goto errout; |
2505 | } |
2506 | memset (charbuf.scratch.data, '\0', UCHAR_MAX + 1); |
2507 | |
2508 | fc = *f; |
2509 | if (fc == ']' || fc == '-') |
2510 | { |
2511 | /* If ] or - appears before any char in the set, it is not |
2512 | the terminator or separator, but the first char in the |
2513 | set. */ |
2514 | ((char *)charbuf.scratch.data)[fc] = 1; |
2515 | ++f; |
2516 | } |
2517 | |
2518 | while ((fc = *f++) != '\0' && fc != ']') |
2519 | if (fc == '-' && *f != '\0' && *f != ']' |
2520 | && (unsigned char) f[-2] <= (unsigned char) *f) |
2521 | { |
2522 | /* Add all characters from the one before the '-' |
2523 | up to (but not including) the next format char. */ |
2524 | for (fc = (unsigned char) f[-2]; fc < (unsigned char) *f; ++fc) |
2525 | ((char *)charbuf.scratch.data)[fc] = 1; |
2526 | } |
2527 | else |
2528 | /* Add the character to the flag map. */ |
2529 | ((char *)charbuf.scratch.data)[fc] = 1; |
2530 | |
2531 | if (__glibc_unlikely (fc == '\0')) |
2532 | conv_error(); |
2533 | #endif |
2534 | |
2535 | if (flags & LONG) |
2536 | { |
2537 | size_t now = read_in; |
2538 | #ifdef COMPILE_WSCANF |
2539 | if (__glibc_unlikely (inchar () == WEOF)) |
2540 | input_error (); |
2541 | |
2542 | do |
2543 | { |
2544 | wchar_t *runp; |
2545 | |
2546 | /* Test whether it's in the scanlist. */ |
2547 | runp = tw; |
2548 | while (runp < twend) |
2549 | { |
2550 | if (runp[0] == L'-' && runp[1] != '\0' |
2551 | && runp + 1 != twend |
2552 | && runp != tw |
2553 | && (unsigned int) runp[-1] <= (unsigned int) runp[1]) |
2554 | { |
2555 | /* Match against all characters in between the |
2556 | first and last character of the sequence. */ |
2557 | wchar_t wc; |
2558 | |
2559 | for (wc = runp[-1] + 1; wc <= runp[1]; ++wc) |
2560 | if ((wint_t) wc == c) |
2561 | break; |
2562 | |
2563 | if (wc <= runp[1] && !not_in) |
2564 | break; |
2565 | if (wc <= runp[1] && not_in) |
2566 | { |
2567 | /* The current character is not in the |
2568 | scanset. */ |
2569 | ungetc (c, s); |
2570 | goto out; |
2571 | } |
2572 | |
2573 | runp += 2; |
2574 | } |
2575 | else |
2576 | { |
2577 | if ((wint_t) *runp == c && !not_in) |
2578 | break; |
2579 | if ((wint_t) *runp == c && not_in) |
2580 | { |
2581 | ungetc (c, s); |
2582 | goto out; |
2583 | } |
2584 | |
2585 | ++runp; |
2586 | } |
2587 | } |
2588 | |
2589 | if (runp == twend && !not_in) |
2590 | { |
2591 | ungetc (c, s); |
2592 | goto out; |
2593 | } |
2594 | |
2595 | if (!(flags & SUPPRESS)) |
2596 | { |
2597 | *wstr++ = c; |
2598 | |
2599 | if ((flags & MALLOC) |
2600 | && wstr == (wchar_t *) *strptr + strsize) |
2601 | { |
2602 | /* Enlarge the buffer. */ |
2603 | wstr = (wchar_t *) realloc (*strptr, |
2604 | (2 * strsize) |
2605 | * sizeof (wchar_t)); |
2606 | if (wstr == NULL) |
2607 | { |
2608 | /* Can't allocate that much. Last-ditch |
2609 | effort. */ |
2610 | wstr = (wchar_t *) |
2611 | realloc (*strptr, (strsize + 1) |
2612 | * sizeof (wchar_t)); |
2613 | if (wstr == NULL) |
2614 | { |
2615 | if (flags & POSIX_MALLOC) |
2616 | { |
2617 | done = EOF; |
2618 | goto errout; |
2619 | } |
2620 | /* We lose. Oh well. Terminate the string |
2621 | and stop converting, so at least we don't |
2622 | skip any input. */ |
2623 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
2624 | strptr = NULL; |
2625 | ++done; |
2626 | conv_error (); |
2627 | } |
2628 | else |
2629 | { |
2630 | *strptr = (char *) wstr; |
2631 | wstr += strsize; |
2632 | ++strsize; |
2633 | } |
2634 | } |
2635 | else |
2636 | { |
2637 | *strptr = (char *) wstr; |
2638 | wstr += strsize; |
2639 | strsize *= 2; |
2640 | } |
2641 | } |
2642 | } |
2643 | } |
2644 | while (--width > 0 && inchar () != WEOF); |
2645 | out: |
2646 | #else |
2647 | char buf[MB_LEN_MAX]; |
2648 | size_t cnt = 0; |
2649 | mbstate_t cstate; |
2650 | |
2651 | if (__glibc_unlikely (inchar () == EOF)) |
2652 | input_error (); |
2653 | |
2654 | memset (&cstate, '\0', sizeof (cstate)); |
2655 | |
2656 | do |
2657 | { |
2658 | if (((char *) charbuf.scratch.data)[c] == not_in) |
2659 | { |
2660 | ungetc_not_eof (c, s); |
2661 | break; |
2662 | } |
2663 | |
2664 | /* This is easy. */ |
2665 | if (!(flags & SUPPRESS)) |
2666 | { |
2667 | size_t n; |
2668 | |
2669 | /* Convert it into a wide character. */ |
2670 | buf[0] = c; |
2671 | n = __mbrtowc (wstr, buf, 1, &cstate); |
2672 | |
2673 | if (n == (size_t) -2) |
2674 | { |
2675 | /* Possibly correct character, just not enough |
2676 | input. */ |
2677 | ++cnt; |
2678 | assert (cnt < MB_CUR_MAX); |
2679 | continue; |
2680 | } |
2681 | cnt = 0; |
2682 | |
2683 | ++wstr; |
2684 | if ((flags & MALLOC) |
2685 | && wstr == (wchar_t *) *strptr + strsize) |
2686 | { |
2687 | /* Enlarge the buffer. */ |
2688 | wstr = (wchar_t *) realloc (*strptr, |
2689 | (2 * strsize |
2690 | * sizeof (wchar_t))); |
2691 | if (wstr == NULL) |
2692 | { |
2693 | /* Can't allocate that much. Last-ditch |
2694 | effort. */ |
2695 | wstr = (wchar_t *) |
2696 | realloc (*strptr, ((strsize + 1) |
2697 | * sizeof (wchar_t))); |
2698 | if (wstr == NULL) |
2699 | { |
2700 | if (flags & POSIX_MALLOC) |
2701 | { |
2702 | done = EOF; |
2703 | goto errout; |
2704 | } |
2705 | /* We lose. Oh well. Terminate the |
2706 | string and stop converting, |
2707 | so at least we don't skip any input. */ |
2708 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; |
2709 | strptr = NULL; |
2710 | ++done; |
2711 | conv_error (); |
2712 | } |
2713 | else |
2714 | { |
2715 | *strptr = (char *) wstr; |
2716 | wstr += strsize; |
2717 | ++strsize; |
2718 | } |
2719 | } |
2720 | else |
2721 | { |
2722 | *strptr = (char *) wstr; |
2723 | wstr += strsize; |
2724 | strsize *= 2; |
2725 | } |
2726 | } |
2727 | } |
2728 | |
2729 | if (--width <= 0) |
2730 | break; |
2731 | } |
2732 | while (inchar () != EOF); |
2733 | |
2734 | if (__glibc_unlikely (cnt != 0)) |
2735 | /* We stopped in the middle of recognizing another |
2736 | character. That's a problem. */ |
2737 | encode_error (); |
2738 | #endif |
2739 | |
2740 | if (__glibc_unlikely (now == read_in)) |
2741 | /* We haven't succesfully read any character. */ |
2742 | conv_error (); |
2743 | |
2744 | if (!(flags & SUPPRESS)) |
2745 | { |
2746 | *wstr++ = L'\0'; |
2747 | |
2748 | if ((flags & MALLOC) |
2749 | && wstr - (wchar_t *) *strptr != strsize) |
2750 | { |
2751 | wchar_t *cp = (wchar_t *) |
2752 | realloc (*strptr, ((wstr - (wchar_t *) *strptr) |
2753 | * sizeof(wchar_t))); |
2754 | if (cp != NULL) |
2755 | *strptr = (char *) cp; |
2756 | } |
2757 | strptr = NULL; |
2758 | |
2759 | ++done; |
2760 | } |
2761 | } |
2762 | else |
2763 | { |
2764 | size_t now = read_in; |
2765 | |
2766 | if (__glibc_unlikely (inchar () == EOF)) |
2767 | input_error (); |
2768 | |
2769 | #ifdef COMPILE_WSCANF |
2770 | |
2771 | memset (&state, '\0', sizeof (state)); |
2772 | |
2773 | do |
2774 | { |
2775 | wchar_t *runp; |
2776 | size_t n; |
2777 | |
2778 | /* Test whether it's in the scanlist. */ |
2779 | runp = tw; |
2780 | while (runp < twend) |
2781 | { |
2782 | if (runp[0] == L'-' && runp[1] != '\0' |
2783 | && runp + 1 != twend |
2784 | && runp != tw |
2785 | && (unsigned int) runp[-1] <= (unsigned int) runp[1]) |
2786 | { |
2787 | /* Match against all characters in between the |
2788 | first and last character of the sequence. */ |
2789 | wchar_t wc; |
2790 | |
2791 | for (wc = runp[-1] + 1; wc <= runp[1]; ++wc) |
2792 | if ((wint_t) wc == c) |
2793 | break; |
2794 | |
2795 | if (wc <= runp[1] && !not_in) |
2796 | break; |
2797 | if (wc <= runp[1] && not_in) |
2798 | { |
2799 | /* The current character is not in the |
2800 | scanset. */ |
2801 | ungetc (c, s); |
2802 | goto out2; |
2803 | } |
2804 | |
2805 | runp += 2; |
2806 | } |
2807 | else |
2808 | { |
2809 | if ((wint_t) *runp == c && !not_in) |
2810 | break; |
2811 | if ((wint_t) *runp == c && not_in) |
2812 | { |
2813 | ungetc (c, s); |
2814 | goto out2; |
2815 | } |
2816 | |
2817 | ++runp; |
2818 | } |
2819 | } |
2820 | |
2821 | if (runp == twend && !not_in) |
2822 | { |
2823 | ungetc (c, s); |
2824 | goto out2; |
2825 | } |
2826 | |
2827 | if (!(flags & SUPPRESS)) |
2828 | { |
2829 | if ((flags & MALLOC) |
2830 | && str + MB_CUR_MAX >= *strptr + strsize) |
2831 | { |
2832 | /* Enlarge the buffer. */ |
2833 | size_t strleng = str - *strptr; |
2834 | char *newstr; |
2835 | |
2836 | newstr = (char *) realloc (*strptr, 2 * strsize); |
2837 | if (newstr == NULL) |
2838 | { |
2839 | /* Can't allocate that much. Last-ditch |
2840 | effort. */ |
2841 | newstr = (char *) realloc (*strptr, |
2842 | strleng + MB_CUR_MAX); |
2843 | if (newstr == NULL) |
2844 | { |
2845 | if (flags & POSIX_MALLOC) |
2846 | { |
2847 | done = EOF; |
2848 | goto errout; |
2849 | } |
2850 | /* We lose. Oh well. Terminate the string |
2851 | and stop converting, so at least we don't |
2852 | skip any input. */ |
2853 | ((char *) (*strptr))[strleng] = '\0'; |
2854 | strptr = NULL; |
2855 | ++done; |
2856 | conv_error (); |
2857 | } |
2858 | else |
2859 | { |
2860 | *strptr = newstr; |
2861 | str = newstr + strleng; |
2862 | strsize = strleng + MB_CUR_MAX; |
2863 | } |
2864 | } |
2865 | else |
2866 | { |
2867 | *strptr = newstr; |
2868 | str = newstr + strleng; |
2869 | strsize *= 2; |
2870 | } |
2871 | } |
2872 | } |
2873 | |
2874 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); |
2875 | if (__glibc_unlikely (n == (size_t) -1)) |
2876 | encode_error (); |
2877 | |
2878 | assert (n <= MB_CUR_MAX); |
2879 | str += n; |
2880 | } |
2881 | while (--width > 0 && inchar () != WEOF); |
2882 | out2: |
2883 | #else |
2884 | do |
2885 | { |
2886 | if (((char *) charbuf.scratch.data)[c] == not_in) |
2887 | { |
2888 | ungetc_not_eof (c, s); |
2889 | break; |
2890 | } |
2891 | |
2892 | /* This is easy. */ |
2893 | if (!(flags & SUPPRESS)) |
2894 | { |
2895 | *str++ = c; |
2896 | if ((flags & MALLOC) |
2897 | && (char *) str == *strptr + strsize) |
2898 | { |
2899 | /* Enlarge the buffer. */ |
2900 | size_t newsize = 2 * strsize; |
2901 | |
2902 | allocagain: |
2903 | str = (char *) realloc (*strptr, newsize); |
2904 | if (str == NULL) |
2905 | { |
2906 | /* Can't allocate that much. Last-ditch |
2907 | effort. */ |
2908 | if (newsize > strsize + 1) |
2909 | { |
2910 | newsize = strsize + 1; |
2911 | goto allocagain; |
2912 | } |
2913 | if (flags & POSIX_MALLOC) |
2914 | { |
2915 | done = EOF; |
2916 | goto errout; |
2917 | } |
2918 | /* We lose. Oh well. Terminate the |
2919 | string and stop converting, |
2920 | so at least we don't skip any input. */ |
2921 | ((char *) (*strptr))[strsize - 1] = '\0'; |
2922 | strptr = NULL; |
2923 | ++done; |
2924 | conv_error (); |
2925 | } |
2926 | else |
2927 | { |
2928 | *strptr = (char *) str; |
2929 | str += strsize; |
2930 | strsize = newsize; |
2931 | } |
2932 | } |
2933 | } |
2934 | } |
2935 | while (--width > 0 && inchar () != EOF); |
2936 | #endif |
2937 | |
2938 | if (__glibc_unlikely (now == read_in)) |
2939 | /* We haven't succesfully read any character. */ |
2940 | conv_error (); |
2941 | |
2942 | if (!(flags & SUPPRESS)) |
2943 | { |
2944 | #ifdef COMPILE_WSCANF |
2945 | /* We have to emit the code to get into the initial |
2946 | state. */ |
2947 | char buf[MB_LEN_MAX]; |
2948 | size_t n = __wcrtomb (buf, L'\0', &state); |
2949 | if (n > 0 && (flags & MALLOC) |
2950 | && str + n >= *strptr + strsize) |
2951 | { |
2952 | /* Enlarge the buffer. */ |
2953 | size_t strleng = str - *strptr; |
2954 | char *newstr; |
2955 | |
2956 | newstr = (char *) realloc (*strptr, strleng + n + 1); |
2957 | if (newstr == NULL) |
2958 | { |
2959 | if (flags & POSIX_MALLOC) |
2960 | { |
2961 | done = EOF; |
2962 | goto errout; |
2963 | } |
2964 | /* We lose. Oh well. Terminate the string |
2965 | and stop converting, so at least we don't |
2966 | skip any input. */ |
2967 | ((char *) (*strptr))[strleng] = '\0'; |
2968 | strptr = NULL; |
2969 | ++done; |
2970 | conv_error (); |
2971 | } |
2972 | else |
2973 | { |
2974 | *strptr = newstr; |
2975 | str = newstr + strleng; |
2976 | strsize = strleng + n + 1; |
2977 | } |
2978 | } |
2979 | |
2980 | str = __mempcpy (str, buf, n); |
2981 | #endif |
2982 | *str++ = '\0'; |
2983 | |
2984 | if ((flags & MALLOC) && str - *strptr != strsize) |
2985 | { |
2986 | char *cp = (char *) realloc (*strptr, str - *strptr); |
2987 | if (cp != NULL) |
2988 | *strptr = cp; |
2989 | } |
2990 | strptr = NULL; |
2991 | |
2992 | ++done; |
2993 | } |
2994 | } |
2995 | break; |
2996 | |
2997 | case L_('p'): /* Generic pointer. */ |
2998 | base = 16; |
2999 | /* A PTR must be the same size as a `long int'. */ |
3000 | flags &= ~(SHORT|LONGDBL); |
3001 | if (need_long) |
3002 | flags |= LONG; |
3003 | flags |= READ_POINTER; |
3004 | goto number; |
3005 | |
3006 | default: |
3007 | /* If this is an unknown format character punt. */ |
3008 | conv_error (); |
3009 | } |
3010 | } |
3011 | |
3012 | /* The last thing we saw int the format string was a white space. |
3013 | Consume the last white spaces. */ |
3014 | if (skip_space) |
3015 | { |
3016 | do |
3017 | c = inchar (); |
3018 | while (ISSPACE (c)); |
3019 | ungetc (c, s); |
3020 | } |
3021 | |
3022 | errout: |
3023 | /* Unlock stream. */ |
3024 | UNLOCK_STREAM (s); |
3025 | |
3026 | scratch_buffer_free (&charbuf.scratch); |
3027 | if (errp != NULL) |
3028 | *errp |= errval; |
3029 | |
3030 | if (__glibc_unlikely (done == EOF)) |
3031 | { |
3032 | if (__glibc_unlikely (ptrs_to_free != NULL)) |
3033 | { |
3034 | struct ptrs_to_free *p = ptrs_to_free; |
3035 | while (p != NULL) |
3036 | { |
3037 | for (size_t cnt = 0; cnt < p->count; ++cnt) |
3038 | { |
3039 | free (*p->ptrs[cnt]); |
3040 | *p->ptrs[cnt] = NULL; |
3041 | } |
3042 | p = p->next; |
3043 | ptrs_to_free = p; |
3044 | } |
3045 | } |
3046 | } |
3047 | else if (__glibc_unlikely (strptr != NULL)) |
3048 | { |
3049 | free (*strptr); |
3050 | *strptr = NULL; |
3051 | } |
3052 | return done; |
3053 | } |
3054 | |
3055 | #ifdef COMPILE_WSCANF |
3056 | int |
3057 | __vfwscanf (FILE *s, const wchar_t *format, va_list argptr) |
3058 | { |
3059 | return _IO_vfwscanf (s, format, argptr, NULL); |
3060 | } |
3061 | ldbl_weak_alias (__vfwscanf, vfwscanf) |
3062 | #else |
3063 | int |
3064 | ___vfscanf (FILE *s, const char *format, va_list argptr) |
3065 | { |
3066 | return _IO_vfscanf_internal (s, format, argptr, NULL); |
3067 | } |
3068 | ldbl_strong_alias (_IO_vfscanf_internal, _IO_vfscanf) |
3069 | ldbl_hidden_def (_IO_vfscanf_internal, _IO_vfscanf) |
3070 | ldbl_strong_alias (___vfscanf, __vfscanf) |
3071 | ldbl_hidden_def (___vfscanf, __vfscanf) |
3072 | ldbl_weak_alias (___vfscanf, vfscanf) |
3073 | #endif |
3074 | |