]>
Commit | Line | Data |
---|---|---|
349718d4 | 1 | /* Internal functions for the *scanf* implementation. |
6d7e8eda | 2 | Copyright (C) 1991-2023 Free Software Foundation, Inc. |
349718d4 ZW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
349718d4 ZW |
18 | |
19 | #include <assert.h> | |
20 | #include <errno.h> | |
21 | #include <limits.h> | |
22 | #include <ctype.h> | |
23 | #include <stdarg.h> | |
24 | #include <stdbool.h> | |
25 | #include <stdio.h> | |
26 | #include <stdint.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <wchar.h> | |
30 | #include <wctype.h> | |
31 | #include <libc-diag.h> | |
32 | #include <libc-lock.h> | |
33 | #include <locale/localeinfo.h> | |
34 | #include <scratch_buffer.h> | |
35 | ||
36 | #ifdef __GNUC__ | |
37 | # define HAVE_LONGLONG | |
38 | # define LONGLONG long long | |
39 | #else | |
40 | # define LONGLONG long | |
41 | #endif | |
42 | ||
43 | /* Determine whether we have to handle `long long' at all. */ | |
44 | #if LONG_MAX == LONG_LONG_MAX | |
45 | # define need_longlong 0 | |
46 | #else | |
47 | # define need_longlong 1 | |
48 | #endif | |
49 | ||
50 | /* Determine whether we have to handle `long'. */ | |
51 | #if INT_MAX == LONG_MAX | |
52 | # define need_long 0 | |
53 | #else | |
54 | # define need_long 1 | |
55 | #endif | |
56 | ||
57 | /* Those are flags in the conversion format. */ | |
58 | #define LONG 0x0001 /* l: long or double */ | |
59 | #define LONGDBL 0x0002 /* L: long long or long double */ | |
60 | #define SHORT 0x0004 /* h: short */ | |
61 | #define SUPPRESS 0x0008 /* *: suppress assignment */ | |
62 | #define POINTER 0x0010 /* weird %p pointer (`fake hex') */ | |
63 | #define NOSKIP 0x0020 /* do not skip blanks */ | |
64 | #define NUMBER_SIGNED 0x0040 /* signed integer */ | |
65 | #define GROUP 0x0080 /* ': group numbers */ | |
66 | #define GNU_MALLOC 0x0100 /* a: malloc strings */ | |
67 | #define CHAR 0x0200 /* hh: char */ | |
68 | #define I18N 0x0400 /* I: use locale's digits */ | |
69 | #define HEXA_FLOAT 0x0800 /* hexadecimal float */ | |
70 | #define READ_POINTER 0x1000 /* this is a pointer value */ | |
71 | #define POSIX_MALLOC 0x2000 /* m: malloc strings */ | |
72 | #define MALLOC (GNU_MALLOC | POSIX_MALLOC) | |
73 | ||
74 | #include <locale/localeinfo.h> | |
75 | #include <libioP.h> | |
76 | ||
77 | #ifdef COMPILE_WSCANF | |
78 | # define ungetc(c, s) ((void) (c == WEOF \ | |
79 | || (--read_in, \ | |
80 | _IO_sputbackwc (s, c)))) | |
81 | # define ungetc_not_eof(c, s) ((void) (--read_in, \ | |
82 | _IO_sputbackwc (s, c))) | |
83 | # define inchar() (c == WEOF ? ((errno = inchar_errno), WEOF) \ | |
84 | : ((c = _IO_getwc_unlocked (s)), \ | |
85 | (void) (c != WEOF \ | |
86 | ? ++read_in \ | |
87 | : (size_t) (inchar_errno = errno)), c)) | |
88 | ||
89 | # define ISSPACE(Ch) iswspace (Ch) | |
90 | # define ISDIGIT(Ch) iswdigit (Ch) | |
91 | # define ISXDIGIT(Ch) iswxdigit (Ch) | |
92 | # define TOLOWER(Ch) towlower (Ch) | |
93 | # define ORIENT if (_IO_fwide (s, 1) != 1) return WEOF | |
94 | # define __strtoll_internal __wcstoll_internal | |
95 | # define __strtoull_internal __wcstoull_internal | |
96 | # define __strtol_internal __wcstol_internal | |
97 | # define __strtoul_internal __wcstoul_internal | |
98 | # define __strtold_internal __wcstold_internal | |
99 | # define __strtod_internal __wcstod_internal | |
100 | # define __strtof_internal __wcstof_internal | |
10446f5d GG |
101 | # if __HAVE_FLOAT128_UNLIKE_LDBL |
102 | # define __strtof128_internal __wcstof128_internal | |
103 | # endif | |
349718d4 ZW |
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 | #include "printf-parse.h" /* Use read_int. */ | |
137 | ||
138 | #define encode_error() do { \ | |
139 | __set_errno (EILSEQ); \ | |
140 | goto errout; \ | |
141 | } while (0) | |
142 | #define conv_error() do { \ | |
143 | goto errout; \ | |
144 | } while (0) | |
145 | #define input_error() do { \ | |
146 | if (done == 0) done = EOF; \ | |
147 | goto errout; \ | |
148 | } while (0) | |
149 | #define add_ptr_to_free(ptr) \ | |
150 | do \ | |
151 | { \ | |
152 | if (ptrs_to_free == NULL \ | |
153 | || ptrs_to_free->count == (sizeof (ptrs_to_free->ptrs) \ | |
154 | / sizeof (ptrs_to_free->ptrs[0]))) \ | |
155 | { \ | |
156 | struct ptrs_to_free *new_ptrs = alloca (sizeof (*ptrs_to_free)); \ | |
157 | new_ptrs->count = 0; \ | |
158 | new_ptrs->next = ptrs_to_free; \ | |
159 | ptrs_to_free = new_ptrs; \ | |
160 | } \ | |
161 | ptrs_to_free->ptrs[ptrs_to_free->count++] = (ptr); \ | |
162 | } \ | |
163 | while (0) | |
164 | #define ARGCHECK(s, format) \ | |
165 | do \ | |
166 | { \ | |
167 | /* Check file argument for consistence. */ \ | |
168 | CHECK_FILE (s, EOF); \ | |
169 | if (s->_flags & _IO_NO_READS) \ | |
170 | { \ | |
171 | __set_errno (EBADF); \ | |
172 | return EOF; \ | |
173 | } \ | |
174 | else if (format == NULL) \ | |
175 | { \ | |
176 | __set_errno (EINVAL); \ | |
177 | return EOF; \ | |
178 | } \ | |
179 | } while (0) | |
180 | #define LOCK_STREAM(S) \ | |
181 | __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, (S)); \ | |
182 | _IO_flockfile (S) | |
183 | #define UNLOCK_STREAM(S) \ | |
184 | _IO_funlockfile (S); \ | |
185 | __libc_cleanup_region_end (0) | |
186 | ||
187 | struct ptrs_to_free | |
188 | { | |
189 | size_t count; | |
190 | struct ptrs_to_free *next; | |
191 | char **ptrs[32]; | |
192 | }; | |
193 | ||
194 | struct char_buffer { | |
195 | CHAR_T *current; | |
196 | CHAR_T *end; | |
197 | struct scratch_buffer scratch; | |
198 | }; | |
199 | ||
200 | /* Returns a pointer to the first CHAR_T object in the buffer. Only | |
201 | valid if char_buffer_add (BUFFER, CH) has been called and | |
202 | char_buffer_error (BUFFER) is false. */ | |
203 | static inline CHAR_T * | |
204 | char_buffer_start (const struct char_buffer *buffer) | |
205 | { | |
206 | return (CHAR_T *) buffer->scratch.data; | |
207 | } | |
208 | ||
209 | /* Returns the number of CHAR_T objects in the buffer. Only valid if | |
210 | char_buffer_error (BUFFER) is false. */ | |
211 | static inline size_t | |
212 | char_buffer_size (const struct char_buffer *buffer) | |
213 | { | |
214 | return buffer->current - char_buffer_start (buffer); | |
215 | } | |
216 | ||
217 | /* Reinitializes BUFFER->current and BUFFER->end to cover the entire | |
218 | scratch buffer. */ | |
219 | static inline void | |
220 | char_buffer_rewind (struct char_buffer *buffer) | |
221 | { | |
222 | buffer->current = char_buffer_start (buffer); | |
223 | buffer->end = buffer->current + buffer->scratch.length / sizeof (CHAR_T); | |
224 | } | |
225 | ||
226 | /* Returns true if a previous call to char_buffer_add (BUFFER, CH) | |
227 | failed. */ | |
228 | static inline bool | |
229 | char_buffer_error (const struct char_buffer *buffer) | |
230 | { | |
231 | return __glibc_unlikely (buffer->current == NULL); | |
232 | } | |
233 | ||
234 | /* Slow path for char_buffer_add. */ | |
235 | static void | |
236 | char_buffer_add_slow (struct char_buffer *buffer, CHAR_T ch) | |
237 | { | |
238 | if (char_buffer_error (buffer)) | |
239 | return; | |
240 | size_t offset = buffer->end - (CHAR_T *) buffer->scratch.data; | |
241 | if (!scratch_buffer_grow_preserve (&buffer->scratch)) | |
242 | { | |
243 | buffer->current = NULL; | |
244 | buffer->end = NULL; | |
245 | return; | |
246 | } | |
247 | char_buffer_rewind (buffer); | |
248 | buffer->current += offset; | |
249 | *buffer->current++ = ch; | |
250 | } | |
251 | ||
252 | /* Adds CH to BUFFER. This function does not report any errors, check | |
253 | for them with char_buffer_error. */ | |
254 | static inline void | |
255 | char_buffer_add (struct char_buffer *buffer, CHAR_T ch) | |
256 | __attribute__ ((always_inline)); | |
257 | static inline void | |
258 | char_buffer_add (struct char_buffer *buffer, CHAR_T ch) | |
259 | { | |
260 | if (__glibc_unlikely (buffer->current == buffer->end)) | |
261 | char_buffer_add_slow (buffer, ch); | |
262 | else | |
263 | *buffer->current++ = ch; | |
264 | } | |
265 | ||
266 | /* Read formatted input from S according to the format string | |
267 | FORMAT, using the argument list in ARG. | |
268 | Return the number of assignments made, or -1 for an input error. */ | |
269 | #ifdef COMPILE_WSCANF | |
270 | int | |
271 | __vfwscanf_internal (FILE *s, const wchar_t *format, va_list argptr, | |
272 | unsigned int mode_flags) | |
273 | #else | |
274 | int | |
275 | __vfscanf_internal (FILE *s, const char *format, va_list argptr, | |
276 | unsigned int mode_flags) | |
277 | #endif | |
278 | { | |
279 | va_list arg; | |
c0e9ddf5 | 280 | const UCHAR_T *f = (const UCHAR_T *) format; |
349718d4 ZW |
281 | UCHAR_T fc; /* Current character of the format. */ |
282 | WINT_T done = 0; /* Assignments done. */ | |
283 | size_t read_in = 0; /* Chars read in. */ | |
284 | WINT_T c = 0; /* Last char read. */ | |
285 | int width; /* Maximum field width. */ | |
286 | int flags; /* Modifiers for current format element. */ | |
287 | #ifndef COMPILE_WSCANF | |
288 | locale_t loc = _NL_CURRENT_LOCALE; | |
289 | struct __locale_data *const curctype = loc->__locales[LC_CTYPE]; | |
290 | #endif | |
291 | ||
292 | /* Errno of last failed inchar call. */ | |
293 | int inchar_errno = 0; | |
294 | /* Status for reading F-P nums. */ | |
295 | char got_digit, got_dot, got_e, got_sign; | |
296 | /* If a [...] is a [^...]. */ | |
297 | CHAR_T not_in; | |
298 | #define exp_char not_in | |
299 | /* Base for integral numbers. */ | |
300 | int base; | |
301 | /* Decimal point character. */ | |
302 | #ifdef COMPILE_WSCANF | |
303 | wint_t decimal; | |
304 | #else | |
305 | const char *decimal; | |
306 | #endif | |
307 | /* The thousands character of the current locale. */ | |
308 | #ifdef COMPILE_WSCANF | |
309 | wint_t thousands; | |
310 | #else | |
311 | const char *thousands; | |
312 | #endif | |
313 | struct ptrs_to_free *ptrs_to_free = NULL; | |
314 | /* State for the conversions. */ | |
315 | mbstate_t state; | |
316 | /* Integral holding variables. */ | |
317 | union | |
318 | { | |
319 | long long int q; | |
320 | unsigned long long int uq; | |
321 | long int l; | |
322 | unsigned long int ul; | |
323 | } num; | |
324 | /* Character-buffer pointer. */ | |
325 | char *str = NULL; | |
326 | wchar_t *wstr = NULL; | |
327 | char **strptr = NULL; | |
328 | ssize_t strsize = 0; | |
329 | /* We must not react on white spaces immediately because they can | |
330 | possibly be matched even if in the input stream no character is | |
331 | available anymore. */ | |
332 | int skip_space = 0; | |
333 | /* Workspace. */ | |
334 | CHAR_T *tw; /* Temporary pointer. */ | |
335 | struct char_buffer charbuf; | |
336 | scratch_buffer_init (&charbuf.scratch); | |
337 | ||
349718d4 ZW |
338 | #ifdef __va_copy |
339 | __va_copy (arg, argptr); | |
340 | #else | |
341 | arg = (va_list) argptr; | |
342 | #endif | |
343 | ||
344 | #ifdef ORIENT | |
345 | ORIENT; | |
346 | #endif | |
347 | ||
348 | ARGCHECK (s, format); | |
349 | ||
350 | { | |
351 | #ifndef COMPILE_WSCANF | |
352 | struct __locale_data *const curnumeric = loc->__locales[LC_NUMERIC]; | |
353 | #endif | |
354 | ||
355 | /* Figure out the decimal point character. */ | |
356 | #ifdef COMPILE_WSCANF | |
357 | decimal = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_DECIMAL_POINT_WC); | |
358 | #else | |
359 | decimal = curnumeric->values[_NL_ITEM_INDEX (DECIMAL_POINT)].string; | |
360 | #endif | |
361 | /* Figure out the thousands separator character. */ | |
362 | #ifdef COMPILE_WSCANF | |
363 | thousands = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_THOUSANDS_SEP_WC); | |
364 | #else | |
365 | thousands = curnumeric->values[_NL_ITEM_INDEX (THOUSANDS_SEP)].string; | |
366 | if (*thousands == '\0') | |
367 | thousands = NULL; | |
368 | #endif | |
369 | } | |
370 | ||
371 | /* Lock the stream. */ | |
372 | LOCK_STREAM (s); | |
373 | ||
374 | ||
375 | #ifndef COMPILE_WSCANF | |
376 | /* From now on we use `state' to convert the format string. */ | |
377 | memset (&state, '\0', sizeof (state)); | |
378 | #endif | |
379 | ||
380 | /* Run through the format string. */ | |
381 | while (*f != '\0') | |
382 | { | |
383 | unsigned int argpos; | |
384 | /* Extract the next argument, which is of type TYPE. | |
385 | For a %N$... spec, this is the Nth argument from the beginning; | |
386 | otherwise it is the next argument after the state now in ARG. */ | |
387 | #ifdef __va_copy | |
c5f65462 JM |
388 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) \ |
389 | : ({ unsigned int pos = argpos; \ | |
390 | va_list arg; \ | |
391 | __va_copy (arg, argptr); \ | |
392 | while (--pos > 0) \ | |
393 | (void) va_arg (arg, void *); \ | |
394 | va_arg (arg, type); \ | |
395 | })) | |
349718d4 ZW |
396 | #else |
397 | # if 0 | |
398 | /* XXX Possible optimization. */ | |
c5f65462 JM |
399 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) \ |
400 | : ({ va_list arg = (va_list) argptr; \ | |
401 | arg = (va_list) ((char *) arg \ | |
402 | + (argpos - 1) \ | |
403 | * __va_rounded_size (void *)); \ | |
404 | va_arg (arg, type); \ | |
405 | })) | |
349718d4 | 406 | # else |
c5f65462 JM |
407 | # define ARG(type) (argpos == 0 ? va_arg (arg, type) \ |
408 | : ({ unsigned int pos = argpos; \ | |
409 | va_list arg = (va_list) argptr; \ | |
410 | while (--pos > 0) \ | |
411 | (void) va_arg (arg, void *); \ | |
412 | va_arg (arg, type); \ | |
413 | })) | |
349718d4 ZW |
414 | # endif |
415 | #endif | |
416 | ||
417 | #ifndef COMPILE_WSCANF | |
c0e9ddf5 | 418 | if (!isascii (*f)) |
349718d4 ZW |
419 | { |
420 | /* Non-ASCII, may be a multibyte. */ | |
c0e9ddf5 AS |
421 | int len = __mbrlen ((const char *) f, strlen ((const char *) f), |
422 | &state); | |
349718d4 ZW |
423 | if (len > 0) |
424 | { | |
425 | do | |
426 | { | |
427 | c = inchar (); | |
428 | if (__glibc_unlikely (c == EOF)) | |
429 | input_error (); | |
c0e9ddf5 | 430 | else if (c != *f++) |
349718d4 ZW |
431 | { |
432 | ungetc_not_eof (c, s); | |
433 | conv_error (); | |
434 | } | |
435 | } | |
436 | while (--len > 0); | |
437 | continue; | |
438 | } | |
439 | } | |
440 | #endif | |
441 | ||
442 | fc = *f++; | |
443 | if (fc != '%') | |
444 | { | |
445 | /* Remember to skip spaces. */ | |
446 | if (ISSPACE (fc)) | |
447 | { | |
448 | skip_space = 1; | |
449 | continue; | |
450 | } | |
451 | ||
452 | /* Read a character. */ | |
453 | c = inchar (); | |
454 | ||
455 | /* Characters other than format specs must just match. */ | |
456 | if (__glibc_unlikely (c == EOF)) | |
457 | input_error (); | |
458 | ||
459 | /* We saw white space char as the last character in the format | |
460 | string. Now it's time to skip all leading white space. */ | |
461 | if (skip_space) | |
462 | { | |
463 | while (ISSPACE (c)) | |
464 | if (__glibc_unlikely (inchar () == EOF)) | |
465 | input_error (); | |
466 | skip_space = 0; | |
467 | } | |
468 | ||
469 | if (__glibc_unlikely (c != fc)) | |
470 | { | |
471 | ungetc (c, s); | |
472 | conv_error (); | |
473 | } | |
474 | ||
475 | continue; | |
476 | } | |
477 | ||
478 | /* This is the start of the conversion string. */ | |
479 | flags = 0; | |
480 | ||
481 | /* Initialize state of modifiers. */ | |
482 | argpos = 0; | |
483 | ||
484 | /* Prepare temporary buffer. */ | |
485 | char_buffer_rewind (&charbuf); | |
486 | ||
487 | /* Check for a positional parameter specification. */ | |
c0e9ddf5 | 488 | if (ISDIGIT (*f)) |
349718d4 | 489 | { |
c0e9ddf5 | 490 | argpos = read_int (&f); |
349718d4 ZW |
491 | if (*f == L_('$')) |
492 | ++f; | |
493 | else | |
494 | { | |
495 | /* Oops; that was actually the field width. */ | |
496 | width = argpos; | |
497 | argpos = 0; | |
498 | goto got_width; | |
499 | } | |
500 | } | |
501 | ||
502 | /* Check for the assignment-suppressing, the number grouping flag, | |
503 | and the signal to use the locale's digit representation. */ | |
504 | while (*f == L_('*') || *f == L_('\'') || *f == L_('I')) | |
505 | switch (*f++) | |
506 | { | |
507 | case L_('*'): | |
508 | flags |= SUPPRESS; | |
509 | break; | |
510 | case L_('\''): | |
511 | #ifdef COMPILE_WSCANF | |
512 | if (thousands != L'\0') | |
513 | #else | |
514 | if (thousands != NULL) | |
515 | #endif | |
516 | flags |= GROUP; | |
517 | break; | |
518 | case L_('I'): | |
519 | flags |= I18N; | |
520 | break; | |
521 | } | |
522 | ||
523 | /* Find the maximum field width. */ | |
524 | width = 0; | |
c0e9ddf5 AS |
525 | if (ISDIGIT (*f)) |
526 | width = read_int (&f); | |
349718d4 ZW |
527 | got_width: |
528 | if (width == 0) | |
529 | width = -1; | |
530 | ||
531 | /* Check for type modifiers. */ | |
532 | switch (*f++) | |
533 | { | |
534 | case L_('h'): | |
535 | /* ints are short ints or chars. */ | |
536 | if (*f == L_('h')) | |
537 | { | |
538 | ++f; | |
539 | flags |= CHAR; | |
540 | } | |
541 | else | |
542 | flags |= SHORT; | |
543 | break; | |
544 | case L_('l'): | |
545 | if (*f == L_('l')) | |
546 | { | |
547 | /* A double `l' is equivalent to an `L'. */ | |
548 | ++f; | |
549 | flags |= LONGDBL | LONG; | |
550 | } | |
551 | else | |
552 | /* ints are long ints. */ | |
553 | flags |= LONG; | |
554 | break; | |
555 | case L_('q'): | |
556 | case L_('L'): | |
557 | /* doubles are long doubles, and ints are long long ints. */ | |
558 | flags |= LONGDBL | LONG; | |
559 | break; | |
560 | case L_('a'): | |
561 | /* The `a' is used as a flag only if followed by `s', `S' or | |
562 | `['. */ | |
563 | if (*f != L_('s') && *f != L_('S') && *f != L_('[')) | |
564 | { | |
565 | --f; | |
566 | break; | |
567 | } | |
568 | /* In __isoc99_*scanf %as, %aS and %a[ extension is not | |
569 | supported at all. */ | |
570 | if (__glibc_likely ((mode_flags & SCANF_ISOC99_A) != 0)) | |
571 | { | |
572 | --f; | |
573 | break; | |
574 | } | |
575 | /* String conversions (%s, %[) take a `char **' | |
576 | arg and fill it in with a malloc'd pointer. */ | |
577 | flags |= GNU_MALLOC; | |
578 | break; | |
579 | case L_('m'): | |
580 | flags |= POSIX_MALLOC; | |
581 | if (*f == L_('l')) | |
582 | { | |
583 | ++f; | |
584 | flags |= LONG; | |
585 | } | |
586 | break; | |
587 | case L_('z'): | |
588 | if (need_longlong && sizeof (size_t) > sizeof (unsigned long int)) | |
589 | flags |= LONGDBL; | |
590 | else if (sizeof (size_t) > sizeof (unsigned int)) | |
591 | flags |= LONG; | |
592 | break; | |
593 | case L_('j'): | |
594 | if (need_longlong && sizeof (uintmax_t) > sizeof (unsigned long int)) | |
595 | flags |= LONGDBL; | |
596 | else if (sizeof (uintmax_t) > sizeof (unsigned int)) | |
597 | flags |= LONG; | |
598 | break; | |
599 | case L_('t'): | |
600 | if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int)) | |
601 | flags |= LONGDBL; | |
602 | else if (sizeof (ptrdiff_t) > sizeof (int)) | |
603 | flags |= LONG; | |
604 | break; | |
605 | default: | |
606 | /* Not a recognized modifier. Backup. */ | |
607 | --f; | |
608 | break; | |
609 | } | |
610 | ||
611 | /* End of the format string? */ | |
612 | if (__glibc_unlikely (*f == L_('\0'))) | |
613 | conv_error (); | |
614 | ||
615 | /* Find the conversion specifier. */ | |
616 | fc = *f++; | |
617 | if (skip_space || (fc != L_('[') && fc != L_('c') | |
618 | && fc != L_('C') && fc != L_('n'))) | |
619 | { | |
620 | /* Eat whitespace. */ | |
621 | int save_errno = errno; | |
622 | __set_errno (0); | |
623 | do | |
624 | /* We add the additional test for EOF here since otherwise | |
625 | inchar will restore the old errno value which might be | |
626 | EINTR but does not indicate an interrupt since nothing | |
627 | was read at this time. */ | |
628 | if (__builtin_expect ((c == EOF || inchar () == EOF) | |
629 | && errno == EINTR, 0)) | |
630 | input_error (); | |
631 | while (ISSPACE (c)); | |
632 | __set_errno (save_errno); | |
633 | ungetc (c, s); | |
634 | skip_space = 0; | |
635 | } | |
636 | ||
637 | switch (fc) | |
638 | { | |
639 | case L_('%'): /* Must match a literal '%'. */ | |
640 | c = inchar (); | |
641 | if (__glibc_unlikely (c == EOF)) | |
642 | input_error (); | |
643 | if (__glibc_unlikely (c != fc)) | |
644 | { | |
645 | ungetc_not_eof (c, s); | |
646 | conv_error (); | |
647 | } | |
648 | break; | |
649 | ||
650 | case L_('n'): /* Answer number of assignments done. */ | |
651 | /* Corrigendum 1 to ISO C 1990 describes the allowed flags | |
652 | with the 'n' conversion specifier. */ | |
653 | if (!(flags & SUPPRESS)) | |
654 | { | |
655 | /* Don't count the read-ahead. */ | |
656 | if (need_longlong && (flags & LONGDBL)) | |
657 | *ARG (long long int *) = read_in; | |
658 | else if (need_long && (flags & LONG)) | |
659 | *ARG (long int *) = read_in; | |
660 | else if (flags & SHORT) | |
661 | *ARG (short int *) = read_in; | |
662 | else if (!(flags & CHAR)) | |
663 | *ARG (int *) = read_in; | |
664 | else | |
665 | *ARG (char *) = read_in; | |
666 | ||
667 | #ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1 | |
668 | /* We have a severe problem here. The ISO C standard | |
669 | contradicts itself in explaining the effect of the %n | |
670 | format in `scanf'. While in ISO C:1990 and the ISO C | |
671 | Amendement 1:1995 the result is described as | |
672 | ||
673 | Execution of a %n directive does not effect the | |
674 | assignment count returned at the completion of | |
675 | execution of the f(w)scanf function. | |
676 | ||
677 | in ISO C Corrigendum 1:1994 the following was added: | |
678 | ||
679 | Subclause 7.9.6.2 | |
680 | Add the following fourth example: | |
681 | In: | |
682 | #include <stdio.h> | |
683 | int d1, d2, n1, n2, i; | |
684 | i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2); | |
685 | the value 123 is assigned to d1 and the value3 to n1. | |
686 | Because %n can never get an input failure the value | |
687 | of 3 is also assigned to n2. The value of d2 is not | |
688 | affected. The value 3 is assigned to i. | |
689 | ||
690 | We go for now with the historically correct code from ISO C, | |
691 | i.e., we don't count the %n assignments. When it ever | |
692 | should proof to be wrong just remove the #ifdef above. */ | |
693 | ++done; | |
694 | #endif | |
695 | } | |
696 | break; | |
697 | ||
698 | case L_('c'): /* Match characters. */ | |
699 | if ((flags & LONG) == 0) | |
700 | { | |
701 | if (width == -1) | |
702 | width = 1; | |
703 | ||
704 | #define STRING_ARG(Str, Type, Width) \ | |
705 | do if (!(flags & SUPPRESS)) \ | |
706 | { \ | |
707 | if (flags & MALLOC) \ | |
708 | { \ | |
709 | /* The string is to be stored in a malloc'd buffer. */ \ | |
710 | /* For %mS using char ** is actually wrong, but \ | |
711 | shouldn't make a difference on any arch glibc \ | |
712 | supports and would unnecessarily complicate \ | |
713 | things. */ \ | |
714 | strptr = ARG (char **); \ | |
715 | if (strptr == NULL) \ | |
716 | conv_error (); \ | |
717 | /* Allocate an initial buffer. */ \ | |
718 | strsize = Width; \ | |
719 | *strptr = (char *) malloc (strsize * sizeof (Type)); \ | |
720 | Str = (Type *) *strptr; \ | |
721 | if (Str != NULL) \ | |
722 | add_ptr_to_free (strptr); \ | |
723 | else if (flags & POSIX_MALLOC) \ | |
724 | { \ | |
725 | done = EOF; \ | |
726 | goto errout; \ | |
727 | } \ | |
728 | } \ | |
729 | else \ | |
730 | Str = ARG (Type *); \ | |
731 | if (Str == NULL) \ | |
732 | conv_error (); \ | |
733 | } while (0) | |
734 | #ifdef COMPILE_WSCANF | |
735 | STRING_ARG (str, char, 100); | |
736 | #else | |
737 | STRING_ARG (str, char, (width > 1024 ? 1024 : width)); | |
738 | #endif | |
739 | ||
740 | c = inchar (); | |
741 | if (__glibc_unlikely (c == EOF)) | |
742 | input_error (); | |
743 | ||
744 | #ifdef COMPILE_WSCANF | |
745 | /* We have to convert the wide character(s) into multibyte | |
746 | characters and store the result. */ | |
747 | memset (&state, '\0', sizeof (state)); | |
748 | ||
749 | do | |
750 | { | |
751 | size_t n; | |
752 | ||
753 | if (!(flags & SUPPRESS) && (flags & POSIX_MALLOC) | |
754 | && *strptr + strsize - str <= MB_LEN_MAX) | |
755 | { | |
756 | /* We have to enlarge the buffer if the `m' flag | |
757 | was given. */ | |
758 | size_t strleng = str - *strptr; | |
759 | char *newstr; | |
760 | ||
761 | newstr = (char *) realloc (*strptr, strsize * 2); | |
762 | if (newstr == NULL) | |
763 | { | |
764 | /* Can't allocate that much. Last-ditch effort. */ | |
765 | newstr = (char *) realloc (*strptr, | |
766 | strleng + MB_LEN_MAX); | |
767 | if (newstr == NULL) | |
768 | { | |
769 | /* c can't have `a' flag, only `m'. */ | |
770 | done = EOF; | |
771 | goto errout; | |
772 | } | |
773 | else | |
774 | { | |
775 | *strptr = newstr; | |
776 | str = newstr + strleng; | |
777 | strsize = strleng + MB_LEN_MAX; | |
778 | } | |
779 | } | |
780 | else | |
781 | { | |
782 | *strptr = newstr; | |
783 | str = newstr + strleng; | |
784 | strsize *= 2; | |
785 | } | |
786 | } | |
787 | ||
788 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); | |
789 | if (__glibc_unlikely (n == (size_t) -1)) | |
790 | /* No valid wide character. */ | |
791 | input_error (); | |
792 | ||
793 | /* Increment the output pointer. Even if we don't | |
794 | write anything. */ | |
795 | str += n; | |
796 | } | |
797 | while (--width > 0 && inchar () != EOF); | |
798 | #else | |
799 | if (!(flags & SUPPRESS)) | |
800 | { | |
801 | do | |
802 | { | |
803 | if ((flags & MALLOC) | |
804 | && (char *) str == *strptr + strsize) | |
805 | { | |
806 | /* Enlarge the buffer. */ | |
807 | size_t newsize | |
808 | = strsize | |
809 | + (strsize >= width ? width - 1 : strsize); | |
810 | ||
811 | str = (char *) realloc (*strptr, newsize); | |
812 | if (str == NULL) | |
813 | { | |
814 | /* Can't allocate that much. Last-ditch | |
815 | effort. */ | |
816 | str = (char *) realloc (*strptr, strsize + 1); | |
817 | if (str == NULL) | |
818 | { | |
819 | /* c can't have `a' flag, only `m'. */ | |
820 | done = EOF; | |
821 | goto errout; | |
822 | } | |
823 | else | |
824 | { | |
825 | *strptr = (char *) str; | |
826 | str += strsize; | |
827 | ++strsize; | |
828 | } | |
829 | } | |
830 | else | |
831 | { | |
832 | *strptr = (char *) str; | |
833 | str += strsize; | |
834 | strsize = newsize; | |
835 | } | |
836 | } | |
837 | *str++ = c; | |
838 | } | |
839 | while (--width > 0 && inchar () != EOF); | |
840 | } | |
841 | else | |
842 | while (--width > 0 && inchar () != EOF); | |
843 | #endif | |
844 | ||
845 | if (!(flags & SUPPRESS)) | |
846 | { | |
847 | if ((flags & MALLOC) && str - *strptr != strsize) | |
848 | { | |
849 | char *cp = (char *) realloc (*strptr, str - *strptr); | |
850 | if (cp != NULL) | |
851 | *strptr = cp; | |
852 | } | |
853 | strptr = NULL; | |
854 | ++done; | |
855 | } | |
856 | ||
857 | break; | |
858 | } | |
859 | /* FALLTHROUGH */ | |
860 | case L_('C'): | |
861 | if (width == -1) | |
862 | width = 1; | |
863 | ||
864 | STRING_ARG (wstr, wchar_t, (width > 1024 ? 1024 : width)); | |
865 | ||
866 | c = inchar (); | |
867 | if (__glibc_unlikely (c == EOF)) | |
868 | input_error (); | |
869 | ||
870 | #ifdef COMPILE_WSCANF | |
871 | /* Just store the incoming wide characters. */ | |
872 | if (!(flags & SUPPRESS)) | |
873 | { | |
874 | do | |
875 | { | |
876 | if ((flags & MALLOC) | |
877 | && wstr == (wchar_t *) *strptr + strsize) | |
878 | { | |
879 | size_t newsize | |
880 | = strsize + (strsize > width ? width - 1 : strsize); | |
881 | /* Enlarge the buffer. */ | |
882 | wstr = (wchar_t *) realloc (*strptr, | |
883 | newsize * sizeof (wchar_t)); | |
884 | if (wstr == NULL) | |
885 | { | |
886 | /* Can't allocate that much. Last-ditch effort. */ | |
887 | wstr = (wchar_t *) realloc (*strptr, | |
888 | (strsize + 1) | |
889 | * sizeof (wchar_t)); | |
890 | if (wstr == NULL) | |
891 | { | |
892 | /* C or lc can't have `a' flag, only `m' | |
893 | flag. */ | |
894 | done = EOF; | |
895 | goto errout; | |
896 | } | |
897 | else | |
898 | { | |
899 | *strptr = (char *) wstr; | |
900 | wstr += strsize; | |
901 | ++strsize; | |
902 | } | |
903 | } | |
904 | else | |
905 | { | |
906 | *strptr = (char *) wstr; | |
907 | wstr += strsize; | |
908 | strsize = newsize; | |
909 | } | |
910 | } | |
911 | *wstr++ = c; | |
912 | } | |
913 | while (--width > 0 && inchar () != EOF); | |
914 | } | |
915 | else | |
916 | while (--width > 0 && inchar () != EOF); | |
917 | #else | |
918 | { | |
919 | /* We have to convert the multibyte input sequence to wide | |
920 | characters. */ | |
921 | char buf[1]; | |
922 | mbstate_t cstate; | |
923 | ||
924 | memset (&cstate, '\0', sizeof (cstate)); | |
925 | ||
926 | do | |
927 | { | |
928 | /* This is what we present the mbrtowc function first. */ | |
929 | buf[0] = c; | |
930 | ||
931 | if (!(flags & SUPPRESS) && (flags & MALLOC) | |
932 | && wstr == (wchar_t *) *strptr + strsize) | |
933 | { | |
934 | size_t newsize | |
935 | = strsize + (strsize > width ? width - 1 : strsize); | |
936 | /* Enlarge the buffer. */ | |
937 | wstr = (wchar_t *) realloc (*strptr, | |
938 | newsize * sizeof (wchar_t)); | |
939 | if (wstr == NULL) | |
940 | { | |
941 | /* Can't allocate that much. Last-ditch effort. */ | |
942 | wstr = (wchar_t *) realloc (*strptr, | |
943 | ((strsize + 1) | |
944 | * sizeof (wchar_t))); | |
945 | if (wstr == NULL) | |
946 | { | |
947 | /* C or lc can't have `a' flag, only `m' flag. */ | |
948 | done = EOF; | |
949 | goto errout; | |
950 | } | |
951 | else | |
952 | { | |
953 | *strptr = (char *) wstr; | |
954 | wstr += strsize; | |
955 | ++strsize; | |
956 | } | |
957 | } | |
958 | else | |
959 | { | |
960 | *strptr = (char *) wstr; | |
961 | wstr += strsize; | |
962 | strsize = newsize; | |
963 | } | |
964 | } | |
965 | ||
966 | while (1) | |
967 | { | |
968 | size_t n; | |
969 | ||
970 | n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, | |
971 | buf, 1, &cstate); | |
972 | ||
973 | if (n == (size_t) -2) | |
974 | { | |
975 | /* Possibly correct character, just not enough | |
976 | input. */ | |
977 | if (__glibc_unlikely (inchar () == EOF)) | |
978 | encode_error (); | |
979 | ||
980 | buf[0] = c; | |
981 | continue; | |
982 | } | |
983 | ||
984 | if (__glibc_unlikely (n != 1)) | |
985 | encode_error (); | |
986 | ||
987 | /* We have a match. */ | |
988 | break; | |
989 | } | |
990 | ||
991 | /* Advance the result pointer. */ | |
992 | ++wstr; | |
993 | } | |
994 | while (--width > 0 && inchar () != EOF); | |
995 | } | |
996 | #endif | |
997 | ||
998 | if (!(flags & SUPPRESS)) | |
999 | { | |
1000 | if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) | |
1001 | { | |
1002 | wchar_t *cp = (wchar_t *) realloc (*strptr, | |
1003 | ((wstr | |
1004 | - (wchar_t *) *strptr) | |
1005 | * sizeof (wchar_t))); | |
1006 | if (cp != NULL) | |
1007 | *strptr = (char *) cp; | |
1008 | } | |
1009 | strptr = NULL; | |
1010 | ||
1011 | ++done; | |
1012 | } | |
1013 | ||
1014 | break; | |
1015 | ||
1016 | case L_('s'): /* Read a string. */ | |
1017 | if (!(flags & LONG)) | |
1018 | { | |
1019 | STRING_ARG (str, char, 100); | |
1020 | ||
1021 | c = inchar (); | |
1022 | if (__glibc_unlikely (c == EOF)) | |
1023 | input_error (); | |
1024 | ||
1025 | #ifdef COMPILE_WSCANF | |
1026 | memset (&state, '\0', sizeof (state)); | |
1027 | #endif | |
1028 | ||
1029 | do | |
1030 | { | |
1031 | if (ISSPACE (c)) | |
1032 | { | |
1033 | ungetc_not_eof (c, s); | |
1034 | break; | |
1035 | } | |
1036 | ||
1037 | #ifdef COMPILE_WSCANF | |
1038 | /* This is quite complicated. We have to convert the | |
1039 | wide characters into multibyte characters and then | |
1040 | store them. */ | |
1041 | { | |
1042 | size_t n; | |
1043 | ||
1044 | if (!(flags & SUPPRESS) && (flags & MALLOC) | |
1045 | && *strptr + strsize - str <= MB_LEN_MAX) | |
1046 | { | |
1047 | /* We have to enlarge the buffer if the `a' or `m' | |
1048 | flag was given. */ | |
1049 | size_t strleng = str - *strptr; | |
1050 | char *newstr; | |
1051 | ||
1052 | newstr = (char *) realloc (*strptr, strsize * 2); | |
1053 | if (newstr == NULL) | |
1054 | { | |
1055 | /* Can't allocate that much. Last-ditch | |
1056 | effort. */ | |
1057 | newstr = (char *) realloc (*strptr, | |
1058 | strleng + MB_LEN_MAX); | |
1059 | if (newstr == NULL) | |
1060 | { | |
1061 | if (flags & POSIX_MALLOC) | |
1062 | { | |
1063 | done = EOF; | |
1064 | goto errout; | |
1065 | } | |
1066 | /* We lose. Oh well. Terminate the | |
1067 | string and stop converting, | |
1068 | so at least we don't skip any input. */ | |
1069 | ((char *) (*strptr))[strleng] = '\0'; | |
1070 | strptr = NULL; | |
1071 | ++done; | |
1072 | conv_error (); | |
1073 | } | |
1074 | else | |
1075 | { | |
1076 | *strptr = newstr; | |
1077 | str = newstr + strleng; | |
1078 | strsize = strleng + MB_LEN_MAX; | |
1079 | } | |
1080 | } | |
1081 | else | |
1082 | { | |
1083 | *strptr = newstr; | |
1084 | str = newstr + strleng; | |
1085 | strsize *= 2; | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, | |
1090 | &state); | |
1091 | if (__glibc_unlikely (n == (size_t) -1)) | |
1092 | encode_error (); | |
1093 | ||
1094 | assert (n <= MB_LEN_MAX); | |
1095 | str += n; | |
1096 | } | |
1097 | #else | |
1098 | /* This is easy. */ | |
1099 | if (!(flags & SUPPRESS)) | |
1100 | { | |
1101 | *str++ = c; | |
1102 | if ((flags & MALLOC) | |
1103 | && (char *) str == *strptr + strsize) | |
1104 | { | |
1105 | /* Enlarge the buffer. */ | |
1106 | str = (char *) realloc (*strptr, 2 * strsize); | |
1107 | if (str == NULL) | |
1108 | { | |
1109 | /* Can't allocate that much. Last-ditch | |
1110 | effort. */ | |
1111 | str = (char *) realloc (*strptr, strsize + 1); | |
1112 | if (str == NULL) | |
1113 | { | |
1114 | if (flags & POSIX_MALLOC) | |
1115 | { | |
1116 | done = EOF; | |
1117 | goto errout; | |
1118 | } | |
1119 | /* We lose. Oh well. Terminate the | |
1120 | string and stop converting, | |
1121 | so at least we don't skip any input. */ | |
1122 | ((char *) (*strptr))[strsize - 1] = '\0'; | |
1123 | strptr = NULL; | |
1124 | ++done; | |
1125 | conv_error (); | |
1126 | } | |
1127 | else | |
1128 | { | |
1129 | *strptr = (char *) str; | |
1130 | str += strsize; | |
1131 | ++strsize; | |
1132 | } | |
1133 | } | |
1134 | else | |
1135 | { | |
1136 | *strptr = (char *) str; | |
1137 | str += strsize; | |
1138 | strsize *= 2; | |
1139 | } | |
1140 | } | |
1141 | } | |
1142 | #endif | |
1143 | } | |
1144 | while ((width <= 0 || --width > 0) && inchar () != EOF); | |
1145 | ||
1146 | if (!(flags & SUPPRESS)) | |
1147 | { | |
1148 | #ifdef COMPILE_WSCANF | |
1149 | /* We have to emit the code to get into the initial | |
1150 | state. */ | |
1151 | char buf[MB_LEN_MAX]; | |
1152 | size_t n = __wcrtomb (buf, L'\0', &state); | |
1153 | if (n > 0 && (flags & MALLOC) | |
1154 | && str + n >= *strptr + strsize) | |
1155 | { | |
1156 | /* Enlarge the buffer. */ | |
1157 | size_t strleng = str - *strptr; | |
1158 | char *newstr; | |
1159 | ||
1160 | newstr = (char *) realloc (*strptr, strleng + n + 1); | |
1161 | if (newstr == NULL) | |
1162 | { | |
1163 | if (flags & POSIX_MALLOC) | |
1164 | { | |
1165 | done = EOF; | |
1166 | goto errout; | |
1167 | } | |
1168 | /* We lose. Oh well. Terminate the string | |
1169 | and stop converting, so at least we don't | |
1170 | skip any input. */ | |
1171 | ((char *) (*strptr))[strleng] = '\0'; | |
1172 | strptr = NULL; | |
1173 | ++done; | |
1174 | conv_error (); | |
1175 | } | |
1176 | else | |
1177 | { | |
1178 | *strptr = newstr; | |
1179 | str = newstr + strleng; | |
1180 | strsize = strleng + n + 1; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | str = __mempcpy (str, buf, n); | |
1185 | #endif | |
1186 | *str++ = '\0'; | |
1187 | ||
1188 | if ((flags & MALLOC) && str - *strptr != strsize) | |
1189 | { | |
1190 | char *cp = (char *) realloc (*strptr, str - *strptr); | |
1191 | if (cp != NULL) | |
1192 | *strptr = cp; | |
1193 | } | |
1194 | strptr = NULL; | |
1195 | ||
1196 | ++done; | |
1197 | } | |
1198 | break; | |
1199 | } | |
1200 | /* FALLTHROUGH */ | |
1201 | ||
1202 | case L_('S'): | |
1203 | { | |
1204 | #ifndef COMPILE_WSCANF | |
1205 | mbstate_t cstate; | |
1206 | #endif | |
1207 | ||
1208 | /* Wide character string. */ | |
1209 | STRING_ARG (wstr, wchar_t, 100); | |
1210 | ||
1211 | c = inchar (); | |
1212 | if (__builtin_expect (c == EOF, 0)) | |
1213 | input_error (); | |
1214 | ||
1215 | #ifndef COMPILE_WSCANF | |
1216 | memset (&cstate, '\0', sizeof (cstate)); | |
1217 | #endif | |
1218 | ||
1219 | do | |
1220 | { | |
1221 | if (ISSPACE (c)) | |
1222 | { | |
1223 | ungetc_not_eof (c, s); | |
1224 | break; | |
1225 | } | |
1226 | ||
1227 | #ifdef COMPILE_WSCANF | |
1228 | /* This is easy. */ | |
1229 | if (!(flags & SUPPRESS)) | |
1230 | { | |
1231 | *wstr++ = c; | |
1232 | if ((flags & MALLOC) | |
1233 | && wstr == (wchar_t *) *strptr + strsize) | |
1234 | { | |
1235 | /* Enlarge the buffer. */ | |
1236 | wstr = (wchar_t *) realloc (*strptr, | |
1237 | (2 * strsize) | |
1238 | * sizeof (wchar_t)); | |
1239 | if (wstr == NULL) | |
1240 | { | |
1241 | /* Can't allocate that much. Last-ditch | |
1242 | effort. */ | |
1243 | wstr = (wchar_t *) realloc (*strptr, | |
1244 | (strsize + 1) | |
1245 | * sizeof (wchar_t)); | |
1246 | if (wstr == NULL) | |
1247 | { | |
1248 | if (flags & POSIX_MALLOC) | |
1249 | { | |
1250 | done = EOF; | |
1251 | goto errout; | |
1252 | } | |
1253 | /* We lose. Oh well. Terminate the string | |
1254 | and stop converting, so at least we don't | |
1255 | skip any input. */ | |
1256 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; | |
1257 | strptr = NULL; | |
1258 | ++done; | |
1259 | conv_error (); | |
1260 | } | |
1261 | else | |
1262 | { | |
1263 | *strptr = (char *) wstr; | |
1264 | wstr += strsize; | |
1265 | ++strsize; | |
1266 | } | |
1267 | } | |
1268 | else | |
1269 | { | |
1270 | *strptr = (char *) wstr; | |
1271 | wstr += strsize; | |
1272 | strsize *= 2; | |
1273 | } | |
1274 | } | |
1275 | } | |
1276 | #else | |
1277 | { | |
1278 | char buf[1]; | |
1279 | ||
1280 | buf[0] = c; | |
1281 | ||
1282 | while (1) | |
1283 | { | |
1284 | size_t n; | |
1285 | ||
1286 | n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, | |
1287 | buf, 1, &cstate); | |
1288 | ||
1289 | if (n == (size_t) -2) | |
1290 | { | |
1291 | /* Possibly correct character, just not enough | |
1292 | input. */ | |
1293 | if (__glibc_unlikely (inchar () == EOF)) | |
1294 | encode_error (); | |
1295 | ||
1296 | buf[0] = c; | |
1297 | continue; | |
1298 | } | |
1299 | ||
1300 | if (__glibc_unlikely (n != 1)) | |
1301 | encode_error (); | |
1302 | ||
1303 | /* We have a match. */ | |
1304 | ++wstr; | |
1305 | break; | |
1306 | } | |
1307 | ||
1308 | if (!(flags & SUPPRESS) && (flags & MALLOC) | |
1309 | && wstr == (wchar_t *) *strptr + strsize) | |
1310 | { | |
1311 | /* Enlarge the buffer. */ | |
1312 | wstr = (wchar_t *) realloc (*strptr, | |
1313 | (2 * strsize | |
1314 | * sizeof (wchar_t))); | |
1315 | if (wstr == NULL) | |
1316 | { | |
1317 | /* Can't allocate that much. Last-ditch effort. */ | |
1318 | wstr = (wchar_t *) realloc (*strptr, | |
1319 | ((strsize + 1) | |
1320 | * sizeof (wchar_t))); | |
1321 | if (wstr == NULL) | |
1322 | { | |
1323 | if (flags & POSIX_MALLOC) | |
1324 | { | |
1325 | done = EOF; | |
1326 | goto errout; | |
1327 | } | |
1328 | /* We lose. Oh well. Terminate the | |
1329 | string and stop converting, so at | |
1330 | least we don't skip any input. */ | |
1331 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; | |
1332 | strptr = NULL; | |
1333 | ++done; | |
1334 | conv_error (); | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | *strptr = (char *) wstr; | |
1339 | wstr += strsize; | |
1340 | ++strsize; | |
1341 | } | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | *strptr = (char *) wstr; | |
1346 | wstr += strsize; | |
1347 | strsize *= 2; | |
1348 | } | |
1349 | } | |
1350 | } | |
1351 | #endif | |
1352 | } | |
1353 | while ((width <= 0 || --width > 0) && inchar () != EOF); | |
1354 | ||
1355 | if (!(flags & SUPPRESS)) | |
1356 | { | |
1357 | *wstr++ = L'\0'; | |
1358 | ||
1359 | if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) | |
1360 | { | |
1361 | wchar_t *cp = (wchar_t *) realloc (*strptr, | |
1362 | ((wstr | |
1363 | - (wchar_t *) *strptr) | |
c4f50205 | 1364 | * sizeof (wchar_t))); |
349718d4 ZW |
1365 | if (cp != NULL) |
1366 | *strptr = (char *) cp; | |
1367 | } | |
1368 | strptr = NULL; | |
1369 | ||
1370 | ++done; | |
1371 | } | |
1372 | } | |
1373 | break; | |
1374 | ||
1375 | case L_('x'): /* Hexadecimal integer. */ | |
1376 | case L_('X'): /* Ditto. */ | |
1377 | base = 16; | |
1378 | goto number; | |
1379 | ||
1380 | case L_('o'): /* Octal integer. */ | |
1381 | base = 8; | |
1382 | goto number; | |
1383 | ||
1384 | case L_('u'): /* Unsigned decimal integer. */ | |
1385 | base = 10; | |
1386 | goto number; | |
1387 | ||
1388 | case L_('d'): /* Signed decimal integer. */ | |
1389 | base = 10; | |
1390 | flags |= NUMBER_SIGNED; | |
1391 | goto number; | |
1392 | ||
1393 | case L_('i'): /* Generic number. */ | |
1394 | base = 0; | |
1395 | flags |= NUMBER_SIGNED; | |
1396 | ||
1397 | number: | |
1398 | c = inchar (); | |
1399 | if (__glibc_unlikely (c == EOF)) | |
1400 | input_error (); | |
1401 | ||
1402 | /* Check for a sign. */ | |
1403 | if (c == L_('-') || c == L_('+')) | |
1404 | { | |
1405 | char_buffer_add (&charbuf, c); | |
1406 | if (width > 0) | |
1407 | --width; | |
1408 | c = inchar (); | |
1409 | } | |
1410 | ||
1411 | /* Look for a leading indication of base. */ | |
1412 | if (width != 0 && c == L_('0')) | |
1413 | { | |
1414 | if (width > 0) | |
1415 | --width; | |
1416 | ||
1417 | char_buffer_add (&charbuf, c); | |
1418 | c = inchar (); | |
1419 | ||
1420 | if (width != 0 && TOLOWER (c) == L_('x')) | |
1421 | { | |
1422 | if (base == 0) | |
1423 | base = 16; | |
1424 | if (base == 16) | |
1425 | { | |
1426 | if (width > 0) | |
1427 | --width; | |
1428 | c = inchar (); | |
1429 | } | |
1430 | } | |
dee2bea0 JM |
1431 | else if ((mode_flags & SCANF_ISOC23_BIN_CST) != 0 |
1432 | && base == 0 | |
1433 | && width != 0 | |
1434 | && TOLOWER (c) == L_('b')) | |
1435 | { | |
1436 | base = 2; | |
1437 | if (width > 0) | |
1438 | --width; | |
1439 | c = inchar (); | |
1440 | } | |
349718d4 ZW |
1441 | else if (base == 0) |
1442 | base = 8; | |
1443 | } | |
1444 | ||
1445 | if (base == 0) | |
1446 | base = 10; | |
1447 | ||
1448 | if (base == 10 && __builtin_expect ((flags & I18N) != 0, 0)) | |
1449 | { | |
1450 | int from_level; | |
1451 | int to_level; | |
1452 | int level; | |
1453 | #ifdef COMPILE_WSCANF | |
1454 | const wchar_t *wcdigits[10]; | |
1455 | const wchar_t *wcdigits_extended[10]; | |
1456 | #else | |
1457 | const char *mbdigits[10]; | |
1458 | const char *mbdigits_extended[10]; | |
1459 | #endif | |
1460 | /* "to_inpunct" is a map from ASCII digits to their | |
1461 | equivalent in locale. This is defined for locales | |
1462 | which use an extra digits set. */ | |
1463 | wctrans_t map = __wctrans ("to_inpunct"); | |
1464 | int n; | |
1465 | ||
1466 | from_level = 0; | |
1467 | #ifdef COMPILE_WSCANF | |
1468 | to_level = _NL_CURRENT_WORD (LC_CTYPE, | |
1469 | _NL_CTYPE_INDIGITS_WC_LEN) - 1; | |
1470 | #else | |
1471 | to_level = (uint32_t) curctype->values[_NL_ITEM_INDEX (_NL_CTYPE_INDIGITS_MB_LEN)].word - 1; | |
1472 | #endif | |
1473 | ||
1474 | /* Get the alternative digit forms if there are any. */ | |
1475 | if (__glibc_unlikely (map != NULL)) | |
1476 | { | |
1477 | /* Adding new level for extra digits set in locale file. */ | |
1478 | ++to_level; | |
1479 | ||
1480 | for (n = 0; n < 10; ++n) | |
1481 | { | |
1482 | #ifdef COMPILE_WSCANF | |
1483 | wcdigits[n] = (const wchar_t *) | |
1484 | _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); | |
1485 | ||
1486 | wchar_t *wc_extended = (wchar_t *) | |
1487 | alloca ((to_level + 2) * sizeof (wchar_t)); | |
1488 | __wmemcpy (wc_extended, wcdigits[n], to_level); | |
1489 | wc_extended[to_level] = __towctrans (L'0' + n, map); | |
1490 | wc_extended[to_level + 1] = '\0'; | |
1491 | wcdigits_extended[n] = wc_extended; | |
1492 | #else | |
1493 | mbdigits[n] | |
1494 | = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; | |
1495 | ||
1496 | /* Get the equivalent wide char in map. */ | |
1497 | wint_t extra_wcdigit = __towctrans (L'0' + n, map); | |
1498 | ||
1499 | /* Convert it to multibyte representation. */ | |
1500 | mbstate_t state; | |
1501 | memset (&state, '\0', sizeof (state)); | |
1502 | ||
1503 | char extra_mbdigit[MB_LEN_MAX]; | |
1504 | size_t mblen | |
1505 | = __wcrtomb (extra_mbdigit, extra_wcdigit, &state); | |
1506 | ||
1507 | if (mblen == (size_t) -1) | |
1508 | { | |
1509 | /* Ignore this new level. */ | |
1510 | map = NULL; | |
1511 | break; | |
1512 | } | |
1513 | ||
1514 | /* Calculate the length of mbdigits[n]. */ | |
1515 | const char *last_char = mbdigits[n]; | |
1516 | for (level = 0; level < to_level; ++level) | |
1517 | last_char = strchr (last_char, '\0') + 1; | |
1518 | ||
1519 | size_t mbdigits_len = last_char - mbdigits[n]; | |
1520 | ||
1521 | /* Allocate memory for extended multibyte digit. */ | |
1522 | char *mb_extended; | |
1523 | mb_extended = (char *) alloca (mbdigits_len + mblen + 1); | |
1524 | ||
1525 | /* And get the mbdigits + extra_digit string. */ | |
1526 | *(char *) __mempcpy (__mempcpy (mb_extended, mbdigits[n], | |
1527 | mbdigits_len), | |
1528 | extra_mbdigit, mblen) = '\0'; | |
1529 | mbdigits_extended[n] = mb_extended; | |
1530 | #endif | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | /* Read the number into workspace. */ | |
1535 | while (c != EOF && width != 0) | |
1536 | { | |
1537 | /* In this round we get the pointer to the digit strings | |
1538 | and also perform the first round of comparisons. */ | |
1539 | for (n = 0; n < 10; ++n) | |
1540 | { | |
1541 | /* Get the string for the digits with value N. */ | |
1542 | #ifdef COMPILE_WSCANF | |
1543 | ||
1544 | /* wcdigits_extended[] is fully set in the loop | |
1545 | above, but the test for "map != NULL" is done | |
1546 | inside the loop here and outside the loop there. */ | |
1547 | DIAG_PUSH_NEEDS_COMMENT; | |
1548 | DIAG_IGNORE_NEEDS_COMMENT (4.7, "-Wmaybe-uninitialized"); | |
1549 | ||
1550 | if (__glibc_unlikely (map != NULL)) | |
1551 | wcdigits[n] = wcdigits_extended[n]; | |
1552 | else | |
1553 | wcdigits[n] = (const wchar_t *) | |
1554 | _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); | |
1555 | wcdigits[n] += from_level; | |
1556 | ||
1557 | DIAG_POP_NEEDS_COMMENT; | |
1558 | ||
1559 | if (c == (wint_t) *wcdigits[n]) | |
1560 | { | |
1561 | to_level = from_level; | |
1562 | break; | |
1563 | } | |
1564 | ||
1565 | /* Advance the pointer to the next string. */ | |
1566 | ++wcdigits[n]; | |
1567 | #else | |
1568 | const char *cmpp; | |
1569 | int avail = width > 0 ? width : INT_MAX; | |
1570 | ||
1571 | if (__glibc_unlikely (map != NULL)) | |
1572 | mbdigits[n] = mbdigits_extended[n]; | |
1573 | else | |
1574 | mbdigits[n] | |
1575 | = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; | |
1576 | ||
1577 | for (level = 0; level < from_level; level++) | |
1578 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; | |
1579 | ||
1580 | cmpp = mbdigits[n]; | |
1581 | while ((unsigned char) *cmpp == c && avail >= 0) | |
1582 | { | |
1583 | if (*++cmpp == '\0') | |
1584 | break; | |
1585 | else | |
1586 | { | |
1587 | if (avail == 0 || inchar () == EOF) | |
1588 | break; | |
1589 | --avail; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | if (*cmpp == '\0') | |
1594 | { | |
1595 | if (width > 0) | |
1596 | width = avail; | |
1597 | to_level = from_level; | |
1598 | break; | |
1599 | } | |
1600 | ||
1601 | /* We are pushing all read characters back. */ | |
1602 | if (cmpp > mbdigits[n]) | |
1603 | { | |
1604 | ungetc (c, s); | |
1605 | while (--cmpp > mbdigits[n]) | |
1606 | ungetc_not_eof ((unsigned char) *cmpp, s); | |
1607 | c = (unsigned char) *cmpp; | |
1608 | } | |
1609 | ||
1610 | /* Advance the pointer to the next string. */ | |
1611 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; | |
1612 | #endif | |
1613 | } | |
1614 | ||
1615 | if (n == 10) | |
1616 | { | |
1617 | /* Have not yet found the digit. */ | |
1618 | for (level = from_level + 1; level <= to_level; ++level) | |
1619 | { | |
1620 | /* Search all ten digits of this level. */ | |
1621 | for (n = 0; n < 10; ++n) | |
1622 | { | |
1623 | #ifdef COMPILE_WSCANF | |
1624 | if (c == (wint_t) *wcdigits[n]) | |
1625 | break; | |
1626 | ||
1627 | /* Advance the pointer to the next string. */ | |
1628 | ++wcdigits[n]; | |
1629 | #else | |
1630 | const char *cmpp; | |
1631 | int avail = width > 0 ? width : INT_MAX; | |
1632 | ||
1633 | cmpp = mbdigits[n]; | |
1634 | while ((unsigned char) *cmpp == c && avail >= 0) | |
1635 | { | |
1636 | if (*++cmpp == '\0') | |
1637 | break; | |
1638 | else | |
1639 | { | |
1640 | if (avail == 0 || inchar () == EOF) | |
1641 | break; | |
1642 | --avail; | |
1643 | } | |
1644 | } | |
1645 | ||
1646 | if (*cmpp == '\0') | |
1647 | { | |
1648 | if (width > 0) | |
1649 | width = avail; | |
1650 | break; | |
1651 | } | |
1652 | ||
1653 | /* We are pushing all read characters back. */ | |
1654 | if (cmpp > mbdigits[n]) | |
1655 | { | |
1656 | ungetc (c, s); | |
1657 | while (--cmpp > mbdigits[n]) | |
1658 | ungetc_not_eof ((unsigned char) *cmpp, s); | |
1659 | c = (unsigned char) *cmpp; | |
1660 | } | |
1661 | ||
1662 | /* Advance the pointer to the next string. */ | |
1663 | mbdigits[n] = strchr (mbdigits[n], '\0') + 1; | |
1664 | #endif | |
1665 | } | |
1666 | ||
1667 | if (n < 10) | |
1668 | { | |
1669 | /* Found it. */ | |
1670 | from_level = level; | |
1671 | to_level = level; | |
1672 | break; | |
1673 | } | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | if (n < 10) | |
1678 | c = L_('0') + n; | |
1679 | else if (flags & GROUP) | |
1680 | { | |
1681 | /* Try matching against the thousands separator. */ | |
1682 | #ifdef COMPILE_WSCANF | |
1683 | if (c != thousands) | |
1684 | break; | |
1685 | #else | |
1686 | const char *cmpp = thousands; | |
1687 | int avail = width > 0 ? width : INT_MAX; | |
1688 | ||
1689 | while ((unsigned char) *cmpp == c && avail >= 0) | |
1690 | { | |
1691 | char_buffer_add (&charbuf, c); | |
1692 | if (*++cmpp == '\0') | |
1693 | break; | |
1694 | else | |
1695 | { | |
1696 | if (avail == 0 || inchar () == EOF) | |
1697 | break; | |
1698 | --avail; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | if (char_buffer_error (&charbuf)) | |
1703 | { | |
1704 | __set_errno (ENOMEM); | |
1705 | done = EOF; | |
1706 | goto errout; | |
1707 | } | |
1708 | ||
1709 | if (*cmpp != '\0') | |
1710 | { | |
1711 | /* We are pushing all read characters back. */ | |
1712 | if (cmpp > thousands) | |
1713 | { | |
1714 | charbuf.current -= cmpp - thousands; | |
1715 | ungetc (c, s); | |
1716 | while (--cmpp > thousands) | |
1717 | ungetc_not_eof ((unsigned char) *cmpp, s); | |
1718 | c = (unsigned char) *cmpp; | |
1719 | } | |
1720 | break; | |
1721 | } | |
1722 | ||
1723 | if (width > 0) | |
1724 | width = avail; | |
1725 | ||
1726 | /* The last thousands character will be added back by | |
1727 | the char_buffer_add below. */ | |
1728 | --charbuf.current; | |
1729 | #endif | |
1730 | } | |
1731 | else | |
1732 | break; | |
1733 | ||
1734 | char_buffer_add (&charbuf, c); | |
1735 | if (width > 0) | |
1736 | --width; | |
1737 | ||
1738 | c = inchar (); | |
1739 | } | |
1740 | } | |
1741 | else | |
1742 | /* Read the number into workspace. */ | |
1743 | while (c != EOF && width != 0) | |
1744 | { | |
1745 | if (base == 16) | |
1746 | { | |
1747 | if (!ISXDIGIT (c)) | |
1748 | break; | |
1749 | } | |
1750 | else if (!ISDIGIT (c) || (int) (c - L_('0')) >= base) | |
1751 | { | |
1752 | if (base == 10 && (flags & GROUP)) | |
1753 | { | |
1754 | /* Try matching against the thousands separator. */ | |
1755 | #ifdef COMPILE_WSCANF | |
1756 | if (c != thousands) | |
1757 | break; | |
1758 | #else | |
1759 | const char *cmpp = thousands; | |
1760 | int avail = width > 0 ? width : INT_MAX; | |
1761 | ||
1762 | while ((unsigned char) *cmpp == c && avail >= 0) | |
1763 | { | |
1764 | char_buffer_add (&charbuf, c); | |
1765 | if (*++cmpp == '\0') | |
1766 | break; | |
1767 | else | |
1768 | { | |
1769 | if (avail == 0 || inchar () == EOF) | |
1770 | break; | |
1771 | --avail; | |
1772 | } | |
1773 | } | |
1774 | ||
1775 | if (char_buffer_error (&charbuf)) | |
1776 | { | |
1777 | __set_errno (ENOMEM); | |
1778 | done = EOF; | |
1779 | goto errout; | |
1780 | } | |
1781 | ||
1782 | if (*cmpp != '\0') | |
1783 | { | |
1784 | /* We are pushing all read characters back. */ | |
1785 | if (cmpp > thousands) | |
1786 | { | |
1787 | charbuf.current -= cmpp - thousands; | |
1788 | ungetc (c, s); | |
1789 | while (--cmpp > thousands) | |
1790 | ungetc_not_eof ((unsigned char) *cmpp, s); | |
1791 | c = (unsigned char) *cmpp; | |
1792 | } | |
1793 | break; | |
1794 | } | |
1795 | ||
1796 | if (width > 0) | |
1797 | width = avail; | |
1798 | ||
1799 | /* The last thousands character will be added back by | |
1800 | the char_buffer_add below. */ | |
1801 | --charbuf.current; | |
1802 | #endif | |
1803 | } | |
1804 | else | |
1805 | break; | |
1806 | } | |
1807 | char_buffer_add (&charbuf, c); | |
1808 | if (width > 0) | |
1809 | --width; | |
1810 | ||
1811 | c = inchar (); | |
1812 | } | |
1813 | ||
1814 | if (char_buffer_error (&charbuf)) | |
1815 | { | |
1816 | __set_errno (ENOMEM); | |
1817 | done = EOF; | |
1818 | goto errout; | |
1819 | } | |
1820 | ||
1821 | if (char_buffer_size (&charbuf) == 0 | |
1822 | || (char_buffer_size (&charbuf) == 1 | |
1823 | && (char_buffer_start (&charbuf)[0] == L_('+') | |
1824 | || char_buffer_start (&charbuf)[0] == L_('-')))) | |
1825 | { | |
1826 | /* There was no number. If we are supposed to read a pointer | |
1827 | we must recognize "(nil)" as well. */ | |
1828 | if (__builtin_expect (char_buffer_size (&charbuf) == 0 | |
1829 | && (flags & READ_POINTER) | |
1830 | && (width < 0 || width >= 5) | |
1831 | && c == '(' | |
1832 | && TOLOWER (inchar ()) == L_('n') | |
1833 | && TOLOWER (inchar ()) == L_('i') | |
1834 | && TOLOWER (inchar ()) == L_('l') | |
1835 | && inchar () == L_(')'), 1)) | |
1836 | /* We must produce the value of a NULL pointer. A single | |
1837 | '0' digit is enough. */ | |
1838 | char_buffer_add (&charbuf, L_('0')); | |
1839 | else | |
1840 | { | |
1841 | /* The last read character is not part of the number | |
1842 | anymore. */ | |
1843 | ungetc (c, s); | |
1844 | ||
1845 | conv_error (); | |
1846 | } | |
1847 | } | |
1848 | else | |
1849 | /* The just read character is not part of the number anymore. */ | |
1850 | ungetc (c, s); | |
1851 | ||
1852 | /* Convert the number. */ | |
1853 | char_buffer_add (&charbuf, L_('\0')); | |
1854 | if (char_buffer_error (&charbuf)) | |
1855 | { | |
1856 | __set_errno (ENOMEM); | |
1857 | done = EOF; | |
1858 | goto errout; | |
1859 | } | |
1860 | if (need_longlong && (flags & LONGDBL)) | |
1861 | { | |
1862 | if (flags & NUMBER_SIGNED) | |
1863 | num.q = __strtoll_internal | |
1864 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); | |
1865 | else | |
1866 | num.uq = __strtoull_internal | |
1867 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); | |
1868 | } | |
1869 | else | |
1870 | { | |
1871 | if (flags & NUMBER_SIGNED) | |
1872 | num.l = __strtol_internal | |
1873 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); | |
1874 | else | |
1875 | num.ul = __strtoul_internal | |
1876 | (char_buffer_start (&charbuf), &tw, base, flags & GROUP); | |
1877 | } | |
1878 | if (__glibc_unlikely (char_buffer_start (&charbuf) == tw)) | |
1879 | conv_error (); | |
1880 | ||
1881 | if (!(flags & SUPPRESS)) | |
1882 | { | |
1883 | if (flags & NUMBER_SIGNED) | |
1884 | { | |
1885 | if (need_longlong && (flags & LONGDBL)) | |
1886 | *ARG (LONGLONG int *) = num.q; | |
1887 | else if (need_long && (flags & LONG)) | |
1888 | *ARG (long int *) = num.l; | |
1889 | else if (flags & SHORT) | |
1890 | *ARG (short int *) = (short int) num.l; | |
1891 | else if (!(flags & CHAR)) | |
1892 | *ARG (int *) = (int) num.l; | |
1893 | else | |
1894 | *ARG (signed char *) = (signed char) num.ul; | |
1895 | } | |
1896 | else | |
1897 | { | |
1898 | if (need_longlong && (flags & LONGDBL)) | |
1899 | *ARG (unsigned LONGLONG int *) = num.uq; | |
1900 | else if (need_long && (flags & LONG)) | |
1901 | *ARG (unsigned long int *) = num.ul; | |
1902 | else if (flags & SHORT) | |
1903 | *ARG (unsigned short int *) | |
1904 | = (unsigned short int) num.ul; | |
1905 | else if (!(flags & CHAR)) | |
1906 | *ARG (unsigned int *) = (unsigned int) num.ul; | |
1907 | else | |
1908 | *ARG (unsigned char *) = (unsigned char) num.ul; | |
1909 | } | |
1910 | ++done; | |
1911 | } | |
1912 | break; | |
1913 | ||
1914 | case L_('e'): /* Floating-point numbers. */ | |
1915 | case L_('E'): | |
1916 | case L_('f'): | |
1917 | case L_('F'): | |
1918 | case L_('g'): | |
1919 | case L_('G'): | |
1920 | case L_('a'): | |
1921 | case L_('A'): | |
1922 | c = inchar (); | |
1923 | if (width > 0) | |
1924 | --width; | |
1925 | if (__glibc_unlikely (c == EOF)) | |
1926 | input_error (); | |
1927 | ||
1928 | got_digit = got_dot = got_e = got_sign = 0; | |
1929 | ||
1930 | /* Check for a sign. */ | |
1931 | if (c == L_('-') || c == L_('+')) | |
1932 | { | |
1933 | got_sign = 1; | |
1934 | char_buffer_add (&charbuf, c); | |
1935 | if (__glibc_unlikely (width == 0 || inchar () == EOF)) | |
1936 | /* EOF is only an input error before we read any chars. */ | |
1937 | conv_error (); | |
1938 | if (width > 0) | |
1939 | --width; | |
1940 | } | |
1941 | ||
1942 | /* Take care for the special arguments "nan" and "inf". */ | |
1943 | if (TOLOWER (c) == L_('n')) | |
1944 | { | |
1945 | /* Maybe "nan". */ | |
1946 | char_buffer_add (&charbuf, c); | |
1947 | if (__builtin_expect (width == 0 | |
1948 | || inchar () == EOF | |
1949 | || TOLOWER (c) != L_('a'), 0)) | |
1950 | conv_error (); | |
1951 | if (width > 0) | |
1952 | --width; | |
1953 | char_buffer_add (&charbuf, c); | |
1954 | if (__builtin_expect (width == 0 | |
1955 | || inchar () == EOF | |
1956 | || TOLOWER (c) != L_('n'), 0)) | |
1957 | conv_error (); | |
1958 | if (width > 0) | |
1959 | --width; | |
1960 | char_buffer_add (&charbuf, c); | |
1961 | /* It is "nan". */ | |
1962 | goto scan_float; | |
1963 | } | |
1964 | else if (TOLOWER (c) == L_('i')) | |
1965 | { | |
1966 | /* Maybe "inf" or "infinity". */ | |
1967 | char_buffer_add (&charbuf, c); | |
1968 | if (__builtin_expect (width == 0 | |
1969 | || inchar () == EOF | |
1970 | || TOLOWER (c) != L_('n'), 0)) | |
1971 | conv_error (); | |
1972 | if (width > 0) | |
1973 | --width; | |
1974 | char_buffer_add (&charbuf, c); | |
1975 | if (__builtin_expect (width == 0 | |
1976 | || inchar () == EOF | |
1977 | || TOLOWER (c) != L_('f'), 0)) | |
1978 | conv_error (); | |
1979 | if (width > 0) | |
1980 | --width; | |
1981 | char_buffer_add (&charbuf, c); | |
1982 | /* It is as least "inf". */ | |
1983 | if (width != 0 && inchar () != EOF) | |
1984 | { | |
1985 | if (TOLOWER (c) == L_('i')) | |
1986 | { | |
1987 | if (width > 0) | |
1988 | --width; | |
1989 | /* Now we have to read the rest as well. */ | |
1990 | char_buffer_add (&charbuf, c); | |
1991 | if (__builtin_expect (width == 0 | |
1992 | || inchar () == EOF | |
1993 | || TOLOWER (c) != L_('n'), 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_('i'), 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_('t'), 0)) | |
2008 | conv_error (); | |
2009 | if (width > 0) | |
2010 | --width; | |
2011 | char_buffer_add (&charbuf, c); | |
2012 | if (__builtin_expect (width == 0 | |
2013 | || inchar () == EOF | |
2014 | || TOLOWER (c) != L_('y'), 0)) | |
2015 | conv_error (); | |
2016 | if (width > 0) | |
2017 | --width; | |
2018 | char_buffer_add (&charbuf, c); | |
2019 | } | |
2020 | else | |
2021 | /* Never mind. */ | |
2022 | ungetc (c, s); | |
2023 | } | |
2024 | goto scan_float; | |
2025 | } | |
2026 | ||
2027 | exp_char = L_('e'); | |
2028 | if (width != 0 && c == L_('0')) | |
2029 | { | |
2030 | char_buffer_add (&charbuf, c); | |
2031 | c = inchar (); | |
2032 | if (width > 0) | |
2033 | --width; | |
2034 | if (width != 0 && TOLOWER (c) == L_('x')) | |
2035 | { | |
2036 | /* It is a number in hexadecimal format. */ | |
2037 | char_buffer_add (&charbuf, c); | |
2038 | ||
2039 | flags |= HEXA_FLOAT; | |
2040 | exp_char = L_('p'); | |
2041 | ||
2042 | /* Grouping is not allowed. */ | |
2043 | flags &= ~GROUP; | |
2044 | c = inchar (); | |
2045 | if (width > 0) | |
2046 | --width; | |
2047 | } | |
2048 | else | |
2049 | got_digit = 1; | |
2050 | } | |
2051 | ||
2052 | while (1) | |
2053 | { | |
2054 | if (char_buffer_error (&charbuf)) | |
2055 | { | |
2056 | __set_errno (ENOMEM); | |
2057 | done = EOF; | |
2058 | goto errout; | |
2059 | } | |
2060 | if (ISDIGIT (c)) | |
2061 | { | |
2062 | char_buffer_add (&charbuf, c); | |
2063 | got_digit = 1; | |
2064 | } | |
2065 | else if (!got_e && (flags & HEXA_FLOAT) && ISXDIGIT (c)) | |
2066 | { | |
2067 | char_buffer_add (&charbuf, c); | |
2068 | got_digit = 1; | |
2069 | } | |
2070 | else if (got_e && charbuf.current[-1] == exp_char | |
2071 | && (c == L_('-') || c == L_('+'))) | |
2072 | char_buffer_add (&charbuf, c); | |
2073 | else if (got_digit && !got_e | |
2074 | && (CHAR_T) TOLOWER (c) == exp_char) | |
2075 | { | |
2076 | char_buffer_add (&charbuf, exp_char); | |
2077 | got_e = got_dot = 1; | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | #ifdef COMPILE_WSCANF | |
2082 | if (! got_dot && c == decimal) | |
2083 | { | |
2084 | char_buffer_add (&charbuf, c); | |
2085 | got_dot = 1; | |
2086 | } | |
2087 | else if ((flags & GROUP) != 0 && ! got_dot && c == thousands) | |
2088 | char_buffer_add (&charbuf, c); | |
2089 | else | |
2090 | { | |
2091 | /* The last read character is not part of the number | |
2092 | anymore. */ | |
2093 | ungetc (c, s); | |
2094 | break; | |
2095 | } | |
2096 | #else | |
2097 | const char *cmpp = decimal; | |
2098 | int avail = width > 0 ? width : INT_MAX; | |
2099 | ||
2100 | if (! got_dot) | |
2101 | { | |
2102 | while ((unsigned char) *cmpp == c && avail >= 0) | |
2103 | if (*++cmpp == '\0') | |
2104 | break; | |
2105 | else | |
2106 | { | |
2107 | if (avail == 0 || inchar () == EOF) | |
2108 | break; | |
2109 | --avail; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | if (*cmpp == '\0') | |
2114 | { | |
2115 | /* Add all the characters. */ | |
2116 | for (cmpp = decimal; *cmpp != '\0'; ++cmpp) | |
2117 | char_buffer_add (&charbuf, (unsigned char) *cmpp); | |
2118 | if (width > 0) | |
2119 | width = avail; | |
2120 | got_dot = 1; | |
2121 | } | |
2122 | else | |
2123 | { | |
2124 | /* Figure out whether it is a thousands separator. | |
2125 | There is one problem: we possibly read more than | |
2126 | one character. We cannot push them back but since | |
2127 | we know that parts of the `decimal' string matched, | |
2128 | we can compare against it. */ | |
2129 | const char *cmp2p = thousands; | |
2130 | ||
2131 | if ((flags & GROUP) != 0 && ! got_dot) | |
2132 | { | |
2133 | while (cmp2p - thousands < cmpp - decimal | |
2134 | && *cmp2p == decimal[cmp2p - thousands]) | |
2135 | ++cmp2p; | |
2136 | if (cmp2p - thousands == cmpp - decimal) | |
2137 | { | |
2138 | while ((unsigned char) *cmp2p == c && avail >= 0) | |
2139 | if (*++cmp2p == '\0') | |
2140 | break; | |
2141 | else | |
2142 | { | |
2143 | if (avail == 0 || inchar () == EOF) | |
2144 | break; | |
2145 | --avail; | |
2146 | } | |
2147 | } | |
2148 | } | |
2149 | ||
2150 | if (cmp2p != NULL && *cmp2p == '\0') | |
2151 | { | |
2152 | /* Add all the characters. */ | |
2153 | for (cmpp = thousands; *cmpp != '\0'; ++cmpp) | |
2154 | char_buffer_add (&charbuf, (unsigned char) *cmpp); | |
2155 | if (width > 0) | |
2156 | width = avail; | |
2157 | } | |
2158 | else | |
2159 | { | |
2160 | /* The last read character is not part of the number | |
2161 | anymore. */ | |
2162 | ungetc (c, s); | |
2163 | break; | |
2164 | } | |
2165 | } | |
2166 | #endif | |
2167 | } | |
2168 | ||
2169 | if (width == 0 || inchar () == EOF) | |
2170 | break; | |
2171 | ||
2172 | if (width > 0) | |
2173 | --width; | |
2174 | } | |
2175 | ||
2176 | if (char_buffer_error (&charbuf)) | |
2177 | { | |
2178 | __set_errno (ENOMEM); | |
2179 | done = EOF; | |
2180 | goto errout; | |
2181 | } | |
2182 | ||
2183 | wctrans_t map; | |
2184 | if (__builtin_expect ((flags & I18N) != 0, 0) | |
2185 | /* Hexadecimal floats make no sense, fixing localized | |
2186 | digits with ASCII letters. */ | |
2187 | && !(flags & HEXA_FLOAT) | |
2188 | /* Minimum requirement. */ | |
2189 | && (char_buffer_size (&charbuf) == got_sign || got_dot) | |
2190 | && (map = __wctrans ("to_inpunct")) != NULL) | |
2191 | { | |
2192 | /* Reget the first character. */ | |
2193 | inchar (); | |
2194 | ||
2195 | /* Localized digits, decimal points, and thousands | |
2196 | separator. */ | |
2197 | wint_t wcdigits[12]; | |
2198 | ||
2199 | /* First get decimal equivalent to check if we read it | |
2200 | or not. */ | |
2201 | wcdigits[11] = __towctrans (L'.', map); | |
2202 | ||
2203 | /* If we have not read any character or have just read | |
2204 | locale decimal point which matches the decimal point | |
2205 | for localized FP numbers, then we may have localized | |
2206 | digits. Note, we test GOT_DOT above. */ | |
2207 | #ifdef COMPILE_WSCANF | |
2208 | if (char_buffer_size (&charbuf) == got_sign | |
2209 | || (char_buffer_size (&charbuf) == got_sign + 1 | |
2210 | && wcdigits[11] == decimal)) | |
2211 | #else | |
2212 | char mbdigits[12][MB_LEN_MAX + 1]; | |
2213 | ||
2214 | mbstate_t state; | |
2215 | memset (&state, '\0', sizeof (state)); | |
2216 | ||
2217 | bool match_so_far = char_buffer_size (&charbuf) == got_sign; | |
2218 | size_t mblen = __wcrtomb (mbdigits[11], wcdigits[11], &state); | |
2219 | if (mblen != (size_t) -1) | |
2220 | { | |
2221 | mbdigits[11][mblen] = '\0'; | |
2222 | match_so_far |= | |
2223 | (char_buffer_size (&charbuf) == strlen (decimal) + got_sign | |
2224 | && strcmp (decimal, mbdigits[11]) == 0); | |
2225 | } | |
2226 | else | |
2227 | { | |
2228 | size_t decimal_len = strlen (decimal); | |
2229 | /* This should always be the case but the data comes | |
2230 | from a file. */ | |
2231 | if (decimal_len <= MB_LEN_MAX) | |
2232 | { | |
2233 | match_so_far |= (char_buffer_size (&charbuf) | |
2234 | == decimal_len + got_sign); | |
2235 | memcpy (mbdigits[11], decimal, decimal_len + 1); | |
2236 | } | |
2237 | else | |
2238 | match_so_far = false; | |
2239 | } | |
2240 | ||
2241 | if (match_so_far) | |
2242 | #endif | |
2243 | { | |
2244 | bool have_locthousands = (flags & GROUP) != 0; | |
2245 | ||
2246 | /* Now get the digits and the thousands-sep equivalents. */ | |
2247 | for (int n = 0; n < 11; ++n) | |
2248 | { | |
2249 | if (n < 10) | |
2250 | wcdigits[n] = __towctrans (L'0' + n, map); | |
2251 | else if (n == 10) | |
2252 | { | |
2253 | wcdigits[10] = __towctrans (L',', map); | |
2254 | have_locthousands &= wcdigits[10] != L'\0'; | |
2255 | } | |
2256 | ||
2257 | #ifndef COMPILE_WSCANF | |
2258 | memset (&state, '\0', sizeof (state)); | |
2259 | ||
2260 | size_t mblen = __wcrtomb (mbdigits[n], wcdigits[n], | |
2261 | &state); | |
2262 | if (mblen == (size_t) -1) | |
2263 | { | |
2264 | if (n == 10) | |
2265 | { | |
2266 | if (have_locthousands) | |
2267 | { | |
2268 | size_t thousands_len = strlen (thousands); | |
2269 | if (thousands_len <= MB_LEN_MAX) | |
2270 | memcpy (mbdigits[10], thousands, | |
2271 | thousands_len + 1); | |
2272 | else | |
2273 | have_locthousands = false; | |
2274 | } | |
2275 | } | |
2276 | else | |
2277 | /* Ignore checking against localized digits. */ | |
2278 | goto no_i18nflt; | |
2279 | } | |
2280 | else | |
2281 | mbdigits[n][mblen] = '\0'; | |
2282 | #endif | |
2283 | } | |
2284 | ||
2285 | /* Start checking against localized digits, if | |
2286 | conversion is done correctly. */ | |
2287 | while (1) | |
2288 | { | |
2289 | if (char_buffer_error (&charbuf)) | |
2290 | { | |
2291 | __set_errno (ENOMEM); | |
2292 | done = EOF; | |
2293 | goto errout; | |
2294 | } | |
2295 | if (got_e && charbuf.current[-1] == exp_char | |
2296 | && (c == L_('-') || c == L_('+'))) | |
2297 | char_buffer_add (&charbuf, c); | |
2298 | else if (char_buffer_size (&charbuf) > got_sign && !got_e | |
2299 | && (CHAR_T) TOLOWER (c) == exp_char) | |
2300 | { | |
2301 | char_buffer_add (&charbuf, exp_char); | |
2302 | got_e = got_dot = 1; | |
2303 | } | |
2304 | else | |
2305 | { | |
2306 | /* Check against localized digits, decimal point, | |
2307 | and thousands separator. */ | |
2308 | int n; | |
2309 | for (n = 0; n < 12; ++n) | |
2310 | { | |
2311 | #ifdef COMPILE_WSCANF | |
2312 | if (c == wcdigits[n]) | |
2313 | { | |
2314 | if (n < 10) | |
2315 | char_buffer_add (&charbuf, L_('0') + n); | |
2316 | else if (n == 11 && !got_dot) | |
2317 | { | |
2318 | char_buffer_add (&charbuf, decimal); | |
2319 | got_dot = 1; | |
2320 | } | |
2321 | else if (n == 10 && have_locthousands | |
2322 | && ! got_dot) | |
2323 | char_buffer_add (&charbuf, thousands); | |
2324 | else | |
2325 | /* The last read character is not part | |
2326 | of the number anymore. */ | |
2327 | n = 12; | |
2328 | ||
2329 | break; | |
2330 | } | |
2331 | #else | |
2332 | const char *cmpp = mbdigits[n]; | |
2333 | int avail = width > 0 ? width : INT_MAX; | |
2334 | ||
2335 | while ((unsigned char) *cmpp == c && avail >= 0) | |
2336 | if (*++cmpp == '\0') | |
2337 | break; | |
2338 | else | |
2339 | { | |
2340 | if (avail == 0 || inchar () == EOF) | |
2341 | break; | |
2342 | --avail; | |
2343 | } | |
2344 | if (*cmpp == '\0') | |
2345 | { | |
2346 | if (width > 0) | |
2347 | width = avail; | |
2348 | ||
2349 | if (n < 10) | |
2350 | char_buffer_add (&charbuf, L_('0') + n); | |
2351 | else if (n == 11 && !got_dot) | |
2352 | { | |
2353 | /* Add all the characters. */ | |
2354 | for (cmpp = decimal; *cmpp != '\0'; | |
2355 | ++cmpp) | |
2356 | char_buffer_add (&charbuf, | |
2357 | (unsigned char) *cmpp); | |
2358 | ||
2359 | got_dot = 1; | |
2360 | } | |
2361 | else if (n == 10 && (flags & GROUP) != 0 | |
2362 | && ! got_dot) | |
2363 | { | |
2364 | /* Add all the characters. */ | |
2365 | for (cmpp = thousands; *cmpp != '\0'; | |
2366 | ++cmpp) | |
2367 | char_buffer_add (&charbuf, | |
2368 | (unsigned char) *cmpp); | |
2369 | } | |
2370 | else | |
2371 | /* The last read character is not part | |
2372 | of the number anymore. */ | |
2373 | n = 12; | |
2374 | ||
2375 | break; | |
2376 | } | |
2377 | ||
2378 | /* We are pushing all read characters back. */ | |
2379 | if (cmpp > mbdigits[n]) | |
2380 | { | |
2381 | ungetc (c, s); | |
2382 | while (--cmpp > mbdigits[n]) | |
2383 | ungetc_not_eof ((unsigned char) *cmpp, s); | |
2384 | c = (unsigned char) *cmpp; | |
2385 | } | |
2386 | #endif | |
2387 | } | |
2388 | ||
2389 | if (n >= 12) | |
2390 | { | |
2391 | /* The last read character is not part | |
2392 | of the number anymore. */ | |
2393 | ungetc (c, s); | |
2394 | break; | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | if (width == 0 || inchar () == EOF) | |
2399 | break; | |
2400 | ||
2401 | if (width > 0) | |
2402 | --width; | |
2403 | } | |
2404 | } | |
2405 | ||
2406 | #ifndef COMPILE_WSCANF | |
2407 | no_i18nflt: | |
2408 | ; | |
2409 | #endif | |
2410 | } | |
2411 | ||
2412 | if (char_buffer_error (&charbuf)) | |
2413 | { | |
2414 | __set_errno (ENOMEM); | |
2415 | done = EOF; | |
2416 | goto errout; | |
2417 | } | |
2418 | ||
2419 | /* Have we read any character? If we try to read a number | |
2420 | in hexadecimal notation and we have read only the `0x' | |
2421 | prefix this is an error. */ | |
2422 | if (__glibc_unlikely (char_buffer_size (&charbuf) == got_sign | |
2423 | || ((flags & HEXA_FLOAT) | |
2424 | && (char_buffer_size (&charbuf) | |
2425 | == 2 + got_sign)))) | |
2426 | conv_error (); | |
2427 | ||
2428 | scan_float: | |
2429 | /* Convert the number. */ | |
2430 | char_buffer_add (&charbuf, L_('\0')); | |
2431 | if (char_buffer_error (&charbuf)) | |
2432 | { | |
2433 | __set_errno (ENOMEM); | |
2434 | done = EOF; | |
2435 | goto errout; | |
2436 | } | |
10446f5d GG |
2437 | #if __HAVE_FLOAT128_UNLIKE_LDBL |
2438 | if ((flags & LONGDBL) \ | |
2439 | && (mode_flags & SCANF_LDBL_USES_FLOAT128) != 0) | |
2440 | { | |
2441 | _Float128 d = __strtof128_internal | |
2442 | (char_buffer_start (&charbuf), &tw, flags & GROUP); | |
2443 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) | |
2444 | *ARG (_Float128 *) = d; | |
2445 | } | |
2446 | else | |
2447 | #endif | |
349718d4 ZW |
2448 | if ((flags & LONGDBL) \ |
2449 | && __glibc_likely ((mode_flags & SCANF_LDBL_IS_DBL) == 0)) | |
2450 | { | |
2451 | long double d = __strtold_internal | |
2452 | (char_buffer_start (&charbuf), &tw, flags & GROUP); | |
2453 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) | |
2454 | *ARG (long double *) = d; | |
2455 | } | |
2456 | else if (flags & (LONG | LONGDBL)) | |
2457 | { | |
2458 | double d = __strtod_internal | |
2459 | (char_buffer_start (&charbuf), &tw, flags & GROUP); | |
2460 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) | |
2461 | *ARG (double *) = d; | |
2462 | } | |
2463 | else | |
2464 | { | |
2465 | float d = __strtof_internal | |
2466 | (char_buffer_start (&charbuf), &tw, flags & GROUP); | |
2467 | if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) | |
2468 | *ARG (float *) = d; | |
2469 | } | |
2470 | ||
2471 | if (__glibc_unlikely (tw == char_buffer_start (&charbuf))) | |
2472 | conv_error (); | |
2473 | ||
2474 | if (!(flags & SUPPRESS)) | |
2475 | ++done; | |
2476 | break; | |
2477 | ||
2478 | case L_('['): /* Character class. */ | |
2479 | if (flags & LONG) | |
2480 | STRING_ARG (wstr, wchar_t, 100); | |
2481 | else | |
2482 | STRING_ARG (str, char, 100); | |
2483 | ||
2484 | if (*f == L_('^')) | |
2485 | { | |
2486 | ++f; | |
2487 | not_in = 1; | |
2488 | } | |
2489 | else | |
2490 | not_in = 0; | |
2491 | ||
349718d4 ZW |
2492 | |
2493 | #ifdef COMPILE_WSCANF | |
2494 | /* Find the beginning and the end of the scanlist. We are not | |
2495 | creating a lookup table since it would have to be too large. | |
2496 | Instead we search each time through the string. This is not | |
2497 | a constant lookup time but who uses this feature deserves to | |
2498 | be punished. */ | |
2499 | tw = (wchar_t *) f; /* Marks the beginning. */ | |
2500 | ||
2501 | if (*f == L']') | |
2502 | ++f; | |
2503 | ||
2504 | while ((fc = *f++) != L'\0' && fc != L']'); | |
2505 | ||
2506 | if (__glibc_unlikely (fc == L'\0')) | |
2507 | conv_error (); | |
2508 | wchar_t *twend = (wchar_t *) f - 1; | |
2509 | #else | |
2510 | /* Fill WP with byte flags indexed by character. | |
2511 | We will use this flag map for matching input characters. */ | |
2512 | if (!scratch_buffer_set_array_size | |
2513 | (&charbuf.scratch, UCHAR_MAX + 1, 1)) | |
2514 | { | |
2515 | done = EOF; | |
2516 | goto errout; | |
2517 | } | |
2518 | memset (charbuf.scratch.data, '\0', UCHAR_MAX + 1); | |
2519 | ||
2520 | fc = *f; | |
2521 | if (fc == ']' || fc == '-') | |
2522 | { | |
2523 | /* If ] or - appears before any char in the set, it is not | |
2524 | the terminator or separator, but the first char in the | |
2525 | set. */ | |
2526 | ((char *)charbuf.scratch.data)[fc] = 1; | |
2527 | ++f; | |
2528 | } | |
2529 | ||
2530 | while ((fc = *f++) != '\0' && fc != ']') | |
c0e9ddf5 | 2531 | if (fc == '-' && *f != '\0' && *f != ']' && f[-2] <= *f) |
349718d4 ZW |
2532 | { |
2533 | /* Add all characters from the one before the '-' | |
2534 | up to (but not including) the next format char. */ | |
c0e9ddf5 | 2535 | for (fc = f[-2]; fc < *f; ++fc) |
349718d4 ZW |
2536 | ((char *)charbuf.scratch.data)[fc] = 1; |
2537 | } | |
2538 | else | |
2539 | /* Add the character to the flag map. */ | |
2540 | ((char *)charbuf.scratch.data)[fc] = 1; | |
2541 | ||
2542 | if (__glibc_unlikely (fc == '\0')) | |
2543 | conv_error(); | |
2544 | #endif | |
2545 | ||
2546 | if (flags & LONG) | |
2547 | { | |
2548 | size_t now = read_in; | |
2549 | #ifdef COMPILE_WSCANF | |
2550 | if (__glibc_unlikely (inchar () == WEOF)) | |
2551 | input_error (); | |
2552 | ||
2553 | do | |
2554 | { | |
2555 | wchar_t *runp; | |
2556 | ||
2557 | /* Test whether it's in the scanlist. */ | |
2558 | runp = tw; | |
2559 | while (runp < twend) | |
2560 | { | |
2561 | if (runp[0] == L'-' && runp[1] != '\0' | |
2562 | && runp + 1 != twend | |
2563 | && runp != tw | |
2564 | && (unsigned int) runp[-1] <= (unsigned int) runp[1]) | |
2565 | { | |
2566 | /* Match against all characters in between the | |
2567 | first and last character of the sequence. */ | |
2568 | wchar_t wc; | |
2569 | ||
2570 | for (wc = runp[-1] + 1; wc <= runp[1]; ++wc) | |
2571 | if ((wint_t) wc == c) | |
2572 | break; | |
2573 | ||
2574 | if (wc <= runp[1] && !not_in) | |
2575 | break; | |
2576 | if (wc <= runp[1] && not_in) | |
2577 | { | |
2578 | /* The current character is not in the | |
2579 | scanset. */ | |
2580 | ungetc (c, s); | |
2581 | goto out; | |
2582 | } | |
2583 | ||
2584 | runp += 2; | |
2585 | } | |
2586 | else | |
2587 | { | |
2588 | if ((wint_t) *runp == c && !not_in) | |
2589 | break; | |
2590 | if ((wint_t) *runp == c && not_in) | |
2591 | { | |
2592 | ungetc (c, s); | |
2593 | goto out; | |
2594 | } | |
2595 | ||
2596 | ++runp; | |
2597 | } | |
2598 | } | |
2599 | ||
2600 | if (runp == twend && !not_in) | |
2601 | { | |
2602 | ungetc (c, s); | |
2603 | goto out; | |
2604 | } | |
2605 | ||
2606 | if (!(flags & SUPPRESS)) | |
2607 | { | |
2608 | *wstr++ = c; | |
2609 | ||
2610 | if ((flags & MALLOC) | |
2611 | && wstr == (wchar_t *) *strptr + strsize) | |
2612 | { | |
2613 | /* Enlarge the buffer. */ | |
2614 | wstr = (wchar_t *) realloc (*strptr, | |
2615 | (2 * strsize) | |
2616 | * sizeof (wchar_t)); | |
2617 | if (wstr == NULL) | |
2618 | { | |
2619 | /* Can't allocate that much. Last-ditch | |
2620 | effort. */ | |
2621 | wstr = (wchar_t *) | |
2622 | realloc (*strptr, (strsize + 1) | |
2623 | * sizeof (wchar_t)); | |
2624 | if (wstr == NULL) | |
2625 | { | |
2626 | if (flags & POSIX_MALLOC) | |
2627 | { | |
2628 | done = EOF; | |
2629 | goto errout; | |
2630 | } | |
2631 | /* We lose. Oh well. Terminate the string | |
2632 | and stop converting, so at least we don't | |
2633 | skip any input. */ | |
2634 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; | |
2635 | strptr = NULL; | |
2636 | ++done; | |
2637 | conv_error (); | |
2638 | } | |
2639 | else | |
2640 | { | |
2641 | *strptr = (char *) wstr; | |
2642 | wstr += strsize; | |
2643 | ++strsize; | |
2644 | } | |
2645 | } | |
2646 | else | |
2647 | { | |
2648 | *strptr = (char *) wstr; | |
2649 | wstr += strsize; | |
2650 | strsize *= 2; | |
2651 | } | |
2652 | } | |
2653 | } | |
2654 | } | |
b03e4d7b | 2655 | while ((width < 0 || --width > 0) && inchar () != WEOF); |
349718d4 ZW |
2656 | out: |
2657 | #else | |
2658 | char buf[MB_LEN_MAX]; | |
2659 | size_t cnt = 0; | |
2660 | mbstate_t cstate; | |
2661 | ||
2662 | if (__glibc_unlikely (inchar () == EOF)) | |
2663 | input_error (); | |
2664 | ||
2665 | memset (&cstate, '\0', sizeof (cstate)); | |
2666 | ||
2667 | do | |
2668 | { | |
2669 | if (((char *) charbuf.scratch.data)[c] == not_in) | |
2670 | { | |
2671 | ungetc_not_eof (c, s); | |
2672 | break; | |
2673 | } | |
2674 | ||
2675 | /* This is easy. */ | |
2676 | if (!(flags & SUPPRESS)) | |
2677 | { | |
2678 | size_t n; | |
2679 | ||
2680 | /* Convert it into a wide character. */ | |
2681 | buf[0] = c; | |
2682 | n = __mbrtowc (wstr, buf, 1, &cstate); | |
2683 | ||
2684 | if (n == (size_t) -2) | |
2685 | { | |
2686 | /* Possibly correct character, just not enough | |
2687 | input. */ | |
2688 | ++cnt; | |
2689 | assert (cnt < MB_LEN_MAX); | |
2690 | continue; | |
2691 | } | |
2692 | cnt = 0; | |
2693 | ||
2694 | ++wstr; | |
2695 | if ((flags & MALLOC) | |
2696 | && wstr == (wchar_t *) *strptr + strsize) | |
2697 | { | |
2698 | /* Enlarge the buffer. */ | |
2699 | wstr = (wchar_t *) realloc (*strptr, | |
2700 | (2 * strsize | |
2701 | * sizeof (wchar_t))); | |
2702 | if (wstr == NULL) | |
2703 | { | |
2704 | /* Can't allocate that much. Last-ditch | |
2705 | effort. */ | |
2706 | wstr = (wchar_t *) | |
2707 | realloc (*strptr, ((strsize + 1) | |
2708 | * sizeof (wchar_t))); | |
2709 | if (wstr == NULL) | |
2710 | { | |
2711 | if (flags & POSIX_MALLOC) | |
2712 | { | |
2713 | done = EOF; | |
2714 | goto errout; | |
2715 | } | |
2716 | /* We lose. Oh well. Terminate the | |
2717 | string and stop converting, | |
2718 | so at least we don't skip any input. */ | |
2719 | ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; | |
2720 | strptr = NULL; | |
2721 | ++done; | |
2722 | conv_error (); | |
2723 | } | |
2724 | else | |
2725 | { | |
2726 | *strptr = (char *) wstr; | |
2727 | wstr += strsize; | |
2728 | ++strsize; | |
2729 | } | |
2730 | } | |
2731 | else | |
2732 | { | |
2733 | *strptr = (char *) wstr; | |
2734 | wstr += strsize; | |
2735 | strsize *= 2; | |
2736 | } | |
2737 | } | |
2738 | } | |
2739 | ||
b03e4d7b | 2740 | if (width >= 0 && --width <= 0) |
349718d4 ZW |
2741 | break; |
2742 | } | |
2743 | while (inchar () != EOF); | |
2744 | ||
2745 | if (__glibc_unlikely (cnt != 0)) | |
2746 | /* We stopped in the middle of recognizing another | |
2747 | character. That's a problem. */ | |
2748 | encode_error (); | |
2749 | #endif | |
2750 | ||
2751 | if (__glibc_unlikely (now == read_in)) | |
2752 | /* We haven't succesfully read any character. */ | |
2753 | conv_error (); | |
2754 | ||
2755 | if (!(flags & SUPPRESS)) | |
2756 | { | |
2757 | *wstr++ = L'\0'; | |
2758 | ||
2759 | if ((flags & MALLOC) | |
2760 | && wstr - (wchar_t *) *strptr != strsize) | |
2761 | { | |
2762 | wchar_t *cp = (wchar_t *) | |
2763 | realloc (*strptr, ((wstr - (wchar_t *) *strptr) | |
c4f50205 | 2764 | * sizeof (wchar_t))); |
349718d4 ZW |
2765 | if (cp != NULL) |
2766 | *strptr = (char *) cp; | |
2767 | } | |
2768 | strptr = NULL; | |
2769 | ||
2770 | ++done; | |
2771 | } | |
2772 | } | |
2773 | else | |
2774 | { | |
2775 | size_t now = read_in; | |
2776 | ||
2777 | if (__glibc_unlikely (inchar () == EOF)) | |
2778 | input_error (); | |
2779 | ||
2780 | #ifdef COMPILE_WSCANF | |
2781 | ||
2782 | memset (&state, '\0', sizeof (state)); | |
2783 | ||
2784 | do | |
2785 | { | |
2786 | wchar_t *runp; | |
2787 | size_t n; | |
2788 | ||
2789 | /* Test whether it's in the scanlist. */ | |
2790 | runp = tw; | |
2791 | while (runp < twend) | |
2792 | { | |
2793 | if (runp[0] == L'-' && runp[1] != '\0' | |
2794 | && runp + 1 != twend | |
2795 | && runp != tw | |
2796 | && (unsigned int) runp[-1] <= (unsigned int) runp[1]) | |
2797 | { | |
2798 | /* Match against all characters in between the | |
2799 | first and last character of the sequence. */ | |
2800 | wchar_t wc; | |
2801 | ||
2802 | for (wc = runp[-1] + 1; wc <= runp[1]; ++wc) | |
2803 | if ((wint_t) wc == c) | |
2804 | break; | |
2805 | ||
2806 | if (wc <= runp[1] && !not_in) | |
2807 | break; | |
2808 | if (wc <= runp[1] && not_in) | |
2809 | { | |
2810 | /* The current character is not in the | |
2811 | scanset. */ | |
2812 | ungetc (c, s); | |
2813 | goto out2; | |
2814 | } | |
2815 | ||
2816 | runp += 2; | |
2817 | } | |
2818 | else | |
2819 | { | |
2820 | if ((wint_t) *runp == c && !not_in) | |
2821 | break; | |
2822 | if ((wint_t) *runp == c && not_in) | |
2823 | { | |
2824 | ungetc (c, s); | |
2825 | goto out2; | |
2826 | } | |
2827 | ||
2828 | ++runp; | |
2829 | } | |
2830 | } | |
2831 | ||
2832 | if (runp == twend && !not_in) | |
2833 | { | |
2834 | ungetc (c, s); | |
2835 | goto out2; | |
2836 | } | |
2837 | ||
2838 | if (!(flags & SUPPRESS)) | |
2839 | { | |
2840 | if ((flags & MALLOC) | |
2841 | && *strptr + strsize - str <= MB_LEN_MAX) | |
2842 | { | |
2843 | /* Enlarge the buffer. */ | |
2844 | size_t strleng = str - *strptr; | |
2845 | char *newstr; | |
2846 | ||
2847 | newstr = (char *) realloc (*strptr, 2 * strsize); | |
2848 | if (newstr == NULL) | |
2849 | { | |
2850 | /* Can't allocate that much. Last-ditch | |
2851 | effort. */ | |
2852 | newstr = (char *) realloc (*strptr, | |
2853 | strleng + MB_LEN_MAX); | |
2854 | if (newstr == NULL) | |
2855 | { | |
2856 | if (flags & POSIX_MALLOC) | |
2857 | { | |
2858 | done = EOF; | |
2859 | goto errout; | |
2860 | } | |
2861 | /* We lose. Oh well. Terminate the string | |
2862 | and stop converting, so at least we don't | |
2863 | skip any input. */ | |
2864 | ((char *) (*strptr))[strleng] = '\0'; | |
2865 | strptr = NULL; | |
2866 | ++done; | |
2867 | conv_error (); | |
2868 | } | |
2869 | else | |
2870 | { | |
2871 | *strptr = newstr; | |
2872 | str = newstr + strleng; | |
2873 | strsize = strleng + MB_LEN_MAX; | |
2874 | } | |
2875 | } | |
2876 | else | |
2877 | { | |
2878 | *strptr = newstr; | |
2879 | str = newstr + strleng; | |
2880 | strsize *= 2; | |
2881 | } | |
2882 | } | |
2883 | } | |
2884 | ||
2885 | n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); | |
2886 | if (__glibc_unlikely (n == (size_t) -1)) | |
2887 | encode_error (); | |
2888 | ||
2889 | assert (n <= MB_LEN_MAX); | |
2890 | str += n; | |
2891 | } | |
b03e4d7b | 2892 | while ((width < 0 || --width > 0) && inchar () != WEOF); |
349718d4 ZW |
2893 | out2: |
2894 | #else | |
2895 | do | |
2896 | { | |
2897 | if (((char *) charbuf.scratch.data)[c] == not_in) | |
2898 | { | |
2899 | ungetc_not_eof (c, s); | |
2900 | break; | |
2901 | } | |
2902 | ||
2903 | /* This is easy. */ | |
2904 | if (!(flags & SUPPRESS)) | |
2905 | { | |
2906 | *str++ = c; | |
2907 | if ((flags & MALLOC) | |
2908 | && (char *) str == *strptr + strsize) | |
2909 | { | |
2910 | /* Enlarge the buffer. */ | |
2911 | size_t newsize = 2 * strsize; | |
2912 | ||
2913 | allocagain: | |
2914 | str = (char *) realloc (*strptr, newsize); | |
2915 | if (str == NULL) | |
2916 | { | |
2917 | /* Can't allocate that much. Last-ditch | |
2918 | effort. */ | |
2919 | if (newsize > strsize + 1) | |
2920 | { | |
2921 | newsize = strsize + 1; | |
2922 | goto allocagain; | |
2923 | } | |
2924 | if (flags & POSIX_MALLOC) | |
2925 | { | |
2926 | done = EOF; | |
2927 | goto errout; | |
2928 | } | |
2929 | /* We lose. Oh well. Terminate the | |
2930 | string and stop converting, | |
2931 | so at least we don't skip any input. */ | |
2932 | ((char *) (*strptr))[strsize - 1] = '\0'; | |
2933 | strptr = NULL; | |
2934 | ++done; | |
2935 | conv_error (); | |
2936 | } | |
2937 | else | |
2938 | { | |
2939 | *strptr = (char *) str; | |
2940 | str += strsize; | |
2941 | strsize = newsize; | |
2942 | } | |
2943 | } | |
2944 | } | |
2945 | } | |
b03e4d7b | 2946 | while ((width < 0 || --width > 0) && inchar () != EOF); |
349718d4 ZW |
2947 | #endif |
2948 | ||
2949 | if (__glibc_unlikely (now == read_in)) | |
2950 | /* We haven't succesfully read any character. */ | |
2951 | conv_error (); | |
2952 | ||
2953 | if (!(flags & SUPPRESS)) | |
2954 | { | |
2955 | #ifdef COMPILE_WSCANF | |
2956 | /* We have to emit the code to get into the initial | |
2957 | state. */ | |
2958 | char buf[MB_LEN_MAX]; | |
2959 | size_t n = __wcrtomb (buf, L'\0', &state); | |
2960 | if (n > 0 && (flags & MALLOC) | |
2961 | && str + n >= *strptr + strsize) | |
2962 | { | |
2963 | /* Enlarge the buffer. */ | |
2964 | size_t strleng = str - *strptr; | |
2965 | char *newstr; | |
2966 | ||
2967 | newstr = (char *) realloc (*strptr, strleng + n + 1); | |
2968 | if (newstr == NULL) | |
2969 | { | |
2970 | if (flags & POSIX_MALLOC) | |
2971 | { | |
2972 | done = EOF; | |
2973 | goto errout; | |
2974 | } | |
2975 | /* We lose. Oh well. Terminate the string | |
2976 | and stop converting, so at least we don't | |
2977 | skip any input. */ | |
2978 | ((char *) (*strptr))[strleng] = '\0'; | |
2979 | strptr = NULL; | |
2980 | ++done; | |
2981 | conv_error (); | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | *strptr = newstr; | |
2986 | str = newstr + strleng; | |
2987 | strsize = strleng + n + 1; | |
2988 | } | |
2989 | } | |
2990 | ||
2991 | str = __mempcpy (str, buf, n); | |
2992 | #endif | |
2993 | *str++ = '\0'; | |
2994 | ||
2995 | if ((flags & MALLOC) && str - *strptr != strsize) | |
2996 | { | |
2997 | char *cp = (char *) realloc (*strptr, str - *strptr); | |
2998 | if (cp != NULL) | |
2999 | *strptr = cp; | |
3000 | } | |
3001 | strptr = NULL; | |
3002 | ||
3003 | ++done; | |
3004 | } | |
3005 | } | |
3006 | break; | |
3007 | ||
3008 | case L_('p'): /* Generic pointer. */ | |
3009 | base = 16; | |
3010 | /* A PTR must be the same size as a `long int'. */ | |
3011 | flags &= ~(SHORT|LONGDBL); | |
3012 | if (need_long) | |
3013 | flags |= LONG; | |
3014 | flags |= READ_POINTER; | |
3015 | goto number; | |
3016 | ||
3017 | default: | |
3018 | /* If this is an unknown format character punt. */ | |
3019 | conv_error (); | |
3020 | } | |
3021 | } | |
3022 | ||
3023 | /* The last thing we saw int the format string was a white space. | |
3024 | Consume the last white spaces. */ | |
3025 | if (skip_space) | |
3026 | { | |
3027 | do | |
3028 | c = inchar (); | |
3029 | while (ISSPACE (c)); | |
3030 | ungetc (c, s); | |
3031 | } | |
3032 | ||
3033 | errout: | |
3034 | /* Unlock stream. */ | |
3035 | UNLOCK_STREAM (s); | |
3036 | ||
3037 | scratch_buffer_free (&charbuf.scratch); | |
3038 | ||
3039 | if (__glibc_unlikely (done == EOF)) | |
3040 | { | |
3041 | if (__glibc_unlikely (ptrs_to_free != NULL)) | |
3042 | { | |
3043 | struct ptrs_to_free *p = ptrs_to_free; | |
3044 | while (p != NULL) | |
3045 | { | |
3046 | for (size_t cnt = 0; cnt < p->count; ++cnt) | |
3047 | { | |
3048 | free (*p->ptrs[cnt]); | |
3049 | *p->ptrs[cnt] = NULL; | |
3050 | } | |
3051 | p = p->next; | |
3052 | ptrs_to_free = p; | |
3053 | } | |
3054 | } | |
3055 | } | |
3056 | else if (__glibc_unlikely (strptr != NULL)) | |
3057 | { | |
3058 | free (*strptr); | |
3059 | *strptr = NULL; | |
3060 | } | |
3061 | return done; | |
3062 | } |