1 | /*- |
---|
2 | * Copyright (c) 1990 The Regents of the University of California. |
---|
3 | * All rights reserved. |
---|
4 | * |
---|
5 | * Redistribution and use in source and binary forms are permitted |
---|
6 | * provided that the above copyright notice and this paragraph are |
---|
7 | * duplicated in all such forms and that any documentation, |
---|
8 | * advertising materials, and other materials related to such |
---|
9 | * distribution and use acknowledge that the software was developed |
---|
10 | * by the University of California, Berkeley. The name of the |
---|
11 | * University may not be used to endorse or promote products derived |
---|
12 | * from this software without specific prior written permission. |
---|
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
---|
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
---|
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
---|
16 | */ |
---|
17 | |
---|
18 | /* |
---|
19 | FUNCTION |
---|
20 | <<vfwscanf>>, <<vwscanf>>, <<vswscanf>>---scan and format argument list from wide character input |
---|
21 | |
---|
22 | INDEX |
---|
23 | vfwscanf |
---|
24 | INDEX |
---|
25 | _vfwscanf |
---|
26 | INDEX |
---|
27 | vwscanf |
---|
28 | INDEX |
---|
29 | _vwscanf |
---|
30 | INDEX |
---|
31 | vswscanf |
---|
32 | INDEX |
---|
33 | _vswscanf |
---|
34 | |
---|
35 | SYNOPSIS |
---|
36 | #include <stdio.h> |
---|
37 | #include <stdarg.h> |
---|
38 | int vwscanf(const wchar_t *__restrict <[fmt]>, va_list <[list]>); |
---|
39 | int vfwscanf(FILE *__restrict <[fp]>, |
---|
40 | const wchar_t *__restrict <[fmt]>, va_list <[list]>); |
---|
41 | int vswscanf(const wchar_t *__restrict <[str]>, |
---|
42 | const wchar_t *__restrict <[fmt]>, va_list <[list]>); |
---|
43 | |
---|
44 | int _vwscanf(struct _reent *<[reent]>, const wchar_t *<[fmt]>, |
---|
45 | va_list <[list]>); |
---|
46 | int _vfwscanf(struct _reent *<[reent]>, FILE *<[fp]>, |
---|
47 | const wchar_t *<[fmt]>, va_list <[list]>); |
---|
48 | int _vswscanf(struct _reent *<[reent]>, const wchar_t *<[str]>, |
---|
49 | const wchar_t *<[fmt]>, va_list <[list]>); |
---|
50 | |
---|
51 | DESCRIPTION |
---|
52 | <<vwscanf>>, <<vfwscanf>>, and <<vswscanf>> are (respectively) variants |
---|
53 | of <<wscanf>>, <<fwscanf>>, and <<swscanf>>. They differ only in |
---|
54 | allowing their caller to pass the variable argument list as a |
---|
55 | <<va_list>> object (initialized by <<va_start>>) rather than |
---|
56 | directly accepting a variable number of arguments. |
---|
57 | |
---|
58 | RETURNS |
---|
59 | The return values are consistent with the corresponding functions: |
---|
60 | <<vwscanf>> returns the number of input fields successfully scanned, |
---|
61 | converted, and stored; the return value does not include scanned |
---|
62 | fields which were not stored. |
---|
63 | |
---|
64 | If <<vwscanf>> attempts to read at end-of-file, the return value |
---|
65 | is <<EOF>>. |
---|
66 | |
---|
67 | If no fields were stored, the return value is <<0>>. |
---|
68 | |
---|
69 | The routines <<_vwscanf>>, <<_vfwscanf>>, and <<_vswscanf>> are |
---|
70 | reentrant versions which take an additional first parameter which points |
---|
71 | to the reentrancy structure. |
---|
72 | |
---|
73 | PORTABILITY |
---|
74 | C99, POSIX-1.2008 |
---|
75 | */ |
---|
76 | |
---|
77 | #include <_ansi.h> |
---|
78 | #include <reent.h> |
---|
79 | #include <newlib.h> |
---|
80 | #include <ctype.h> |
---|
81 | #include <wctype.h> |
---|
82 | #include <stdio.h> |
---|
83 | #include <stdlib.h> |
---|
84 | #include <stdint.h> |
---|
85 | #include <limits.h> |
---|
86 | #include <wchar.h> |
---|
87 | #include <string.h> |
---|
88 | #include <stdarg.h> |
---|
89 | #include <errno.h> |
---|
90 | #include "local.h" |
---|
91 | |
---|
92 | #ifdef INTEGER_ONLY |
---|
93 | #define VFWSCANF vfiwscanf |
---|
94 | #define _VFWSCANF_R _vfiwscanf_r |
---|
95 | #define __SVFWSCANF __svfiwscanf |
---|
96 | #ifdef STRING_ONLY |
---|
97 | # define __SVFWSCANF_R __ssvfiwscanf_r |
---|
98 | #else |
---|
99 | # define __SVFWSCANF_R __svfiwscanf_r |
---|
100 | #endif |
---|
101 | #else |
---|
102 | #define VFWSCANF vfwscanf |
---|
103 | #define _VFWSCANF_R _vfwscanf_r |
---|
104 | #define __SVFWSCANF __svfwscanf |
---|
105 | #ifdef STRING_ONLY |
---|
106 | # define __SVFWSCANF_R __ssvfwscanf_r |
---|
107 | #else |
---|
108 | # define __SVFWSCANF_R __svfwscanf_r |
---|
109 | #endif |
---|
110 | #ifndef NO_FLOATING_POINT |
---|
111 | #define FLOATING_POINT |
---|
112 | #endif |
---|
113 | #endif |
---|
114 | |
---|
115 | #ifdef STRING_ONLY |
---|
116 | #undef _newlib_flockfile_start |
---|
117 | #undef _newlib_flockfile_exit |
---|
118 | #undef _newlib_flockfile_end |
---|
119 | #define _newlib_flockfile_start(x) {} |
---|
120 | #define _newlib_flockfile_exit(x) {} |
---|
121 | #define _newlib_flockfile_end(x) {} |
---|
122 | #define _ungetwc_r _sungetwc_r |
---|
123 | #define __srefill_r __ssrefill_r |
---|
124 | #define _fgetwc_r _sfgetwc_r |
---|
125 | #endif |
---|
126 | |
---|
127 | #ifdef FLOATING_POINT |
---|
128 | #include <math.h> |
---|
129 | #include <float.h> |
---|
130 | #include <locale.h> |
---|
131 | #ifdef __HAVE_LOCALE_INFO_EXTENDED__ |
---|
132 | #include "../locale/setlocale.h" |
---|
133 | #endif |
---|
134 | |
---|
135 | /* Currently a test is made to see if long double processing is warranted. |
---|
136 | This could be changed in the future should the _ldtoa_r code be |
---|
137 | preferred over _dtoa_r. */ |
---|
138 | #define _NO_LONGDBL |
---|
139 | #if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG) |
---|
140 | #undef _NO_LONGDBL |
---|
141 | extern _LONG_DOUBLE _wcstold_r (wchar_t *s, wchar_t **sptr); |
---|
142 | #endif |
---|
143 | |
---|
144 | #include "floatio.h" |
---|
145 | |
---|
146 | #if ((MAXEXP+MAXFRACT+3) > MB_LEN_MAX) |
---|
147 | # define BUF (MAXEXP+MAXFRACT+3) /* 3 = sign + decimal point + NUL */ |
---|
148 | #else |
---|
149 | # define BUF MB_LEN_MAX |
---|
150 | #endif |
---|
151 | |
---|
152 | /* An upper bound for how long a long prints in decimal. 4 / 13 approximates |
---|
153 | log (2). Add one char for roundoff compensation and one for the sign. */ |
---|
154 | #define MAX_LONG_LEN ((CHAR_BIT * sizeof (long) - 1) * 4 / 13 + 2) |
---|
155 | #else |
---|
156 | #define BUF 40 |
---|
157 | #endif |
---|
158 | |
---|
159 | #define _NO_LONGLONG |
---|
160 | #if defined _WANT_IO_LONG_LONG \ |
---|
161 | && (defined __GNUC__ || __STDC_VERSION__ >= 199901L) |
---|
162 | # undef _NO_LONGLONG |
---|
163 | #endif |
---|
164 | |
---|
165 | #define _NO_POS_ARGS |
---|
166 | #ifdef _WANT_IO_POS_ARGS |
---|
167 | # undef _NO_POS_ARGS |
---|
168 | # ifdef NL_ARGMAX |
---|
169 | # define MAX_POS_ARGS NL_ARGMAX |
---|
170 | # else |
---|
171 | # define MAX_POS_ARGS 32 |
---|
172 | # endif |
---|
173 | |
---|
174 | static void * get_arg (int, va_list *, int *, void **); |
---|
175 | #endif /* _WANT_IO_POS_ARGS */ |
---|
176 | |
---|
177 | /* |
---|
178 | * Flags used during conversion. |
---|
179 | */ |
---|
180 | |
---|
181 | #define LONG 0x01 /* l: long or double */ |
---|
182 | #define LONGDBL 0x02 /* L/ll: long double or long long */ |
---|
183 | #define SHORT 0x04 /* h: short */ |
---|
184 | #define CHAR 0x08 /* hh: 8 bit integer */ |
---|
185 | #define SUPPRESS 0x10 /* suppress assignment */ |
---|
186 | #define POINTER 0x20 /* weird %p pointer (`fake hex') */ |
---|
187 | #define NOSKIP 0x40 /* do not skip blanks */ |
---|
188 | #define MALLOC 0x80 /* handle 'm' modifier */ |
---|
189 | |
---|
190 | /* |
---|
191 | * The following are used in numeric conversions only: |
---|
192 | * SIGNOK, NDIGITS, DPTOK, and EXPOK are for floating point; |
---|
193 | * SIGNOK, NDIGITS, PFXOK, and NZDIGITS are for integral. |
---|
194 | */ |
---|
195 | |
---|
196 | #define SIGNOK 0x80 /* +/- is (still) legal */ |
---|
197 | #define NDIGITS 0x100 /* no digits detected */ |
---|
198 | |
---|
199 | #define DPTOK 0x200 /* (float) decimal point is still legal */ |
---|
200 | #define EXPOK 0x400 /* (float) exponent (e+3, etc) still legal */ |
---|
201 | |
---|
202 | #define PFXOK 0x200 /* 0x prefix is (still) legal */ |
---|
203 | #define NZDIGITS 0x400 /* no zero digits detected */ |
---|
204 | #define HAVESIGN 0x10000 /* sign detected */ |
---|
205 | |
---|
206 | /* |
---|
207 | * Conversion types. |
---|
208 | */ |
---|
209 | |
---|
210 | #define CT_CHAR 0 /* %c conversion */ |
---|
211 | #define CT_CCL 1 /* %[...] conversion */ |
---|
212 | #define CT_STRING 2 /* %s conversion */ |
---|
213 | #define CT_INT 3 /* integer, i.e., wcstol or wcstoul */ |
---|
214 | #define CT_FLOAT 4 /* floating, i.e., wcstod */ |
---|
215 | |
---|
216 | #define INCCL(_c) \ |
---|
217 | (cclcompl ? (wmemchr(ccls, (_c), ccle - ccls) == NULL) : \ |
---|
218 | (wmemchr(ccls, (_c), ccle - ccls) != NULL)) |
---|
219 | |
---|
220 | /* |
---|
221 | * vfwscanf |
---|
222 | */ |
---|
223 | |
---|
224 | #ifndef STRING_ONLY |
---|
225 | |
---|
226 | #ifndef _REENT_ONLY |
---|
227 | |
---|
228 | int |
---|
229 | VFWSCANF (register FILE *__restrict fp, |
---|
230 | const wchar_t *__restrict fmt, |
---|
231 | va_list ap) |
---|
232 | { |
---|
233 | struct _reent *reent = _REENT; |
---|
234 | |
---|
235 | CHECK_INIT(reent, fp); |
---|
236 | return __SVFWSCANF_R (reent, fp, fmt, ap); |
---|
237 | } |
---|
238 | |
---|
239 | int |
---|
240 | __SVFWSCANF (register FILE *fp, |
---|
241 | wchar_t const *fmt0, |
---|
242 | va_list ap) |
---|
243 | { |
---|
244 | return __SVFWSCANF_R (_REENT, fp, fmt0, ap); |
---|
245 | } |
---|
246 | |
---|
247 | #endif /* !_REENT_ONLY */ |
---|
248 | |
---|
249 | int |
---|
250 | _VFWSCANF_R (struct _reent *data, |
---|
251 | register FILE *fp, |
---|
252 | const wchar_t *fmt, |
---|
253 | va_list ap) |
---|
254 | { |
---|
255 | CHECK_INIT(data, fp); |
---|
256 | return __SVFWSCANF_R (data, fp, fmt, ap); |
---|
257 | } |
---|
258 | #endif /* !STRING_ONLY */ |
---|
259 | |
---|
260 | #ifdef STRING_ONLY |
---|
261 | /* When dealing with the swscanf family, we don't want to use the |
---|
262 | * regular ungetwc which will drag in file I/O items we don't need. |
---|
263 | * So, we create our own trimmed-down version. */ |
---|
264 | static wint_t |
---|
265 | _sungetwc_r (struct _reent *data, |
---|
266 | wint_t wc, |
---|
267 | register FILE *fp) |
---|
268 | { |
---|
269 | if (wc == WEOF) |
---|
270 | return (WEOF); |
---|
271 | |
---|
272 | /* After ungetc, we won't be at eof anymore */ |
---|
273 | fp->_flags &= ~__SEOF; |
---|
274 | |
---|
275 | /* |
---|
276 | * If we are in the middle of ungetwc'ing, just continue. |
---|
277 | * This may require expanding the current ungetc buffer. |
---|
278 | */ |
---|
279 | |
---|
280 | if (HASUB (fp)) |
---|
281 | { |
---|
282 | if (fp->_r >= fp->_ub._size && __submore (data, fp)) |
---|
283 | { |
---|
284 | return EOF; |
---|
285 | } |
---|
286 | fp->_p -= sizeof (wchar_t); |
---|
287 | *fp->_p = (wchar_t) wc; |
---|
288 | fp->_r += sizeof (wchar_t); |
---|
289 | return wc; |
---|
290 | } |
---|
291 | |
---|
292 | /* |
---|
293 | * If we can handle this by simply backing up, do so, |
---|
294 | * but never replace the original character. |
---|
295 | * (This makes swscanf() work when scanning `const' data.) |
---|
296 | */ |
---|
297 | |
---|
298 | if (fp->_bf._base != NULL && fp->_p > fp->_bf._base |
---|
299 | && ((wchar_t *)fp->_p)[-1] == wc) |
---|
300 | { |
---|
301 | fp->_p -= sizeof (wchar_t); |
---|
302 | fp->_r += sizeof (wchar_t); |
---|
303 | return wc; |
---|
304 | } |
---|
305 | |
---|
306 | /* |
---|
307 | * Create an ungetc buffer. |
---|
308 | * Initially, we will use the `reserve' buffer. |
---|
309 | */ |
---|
310 | |
---|
311 | fp->_ur = fp->_r; |
---|
312 | fp->_up = fp->_p; |
---|
313 | fp->_ub._base = fp->_ubuf; |
---|
314 | fp->_ub._size = sizeof (fp->_ubuf); |
---|
315 | fp->_p = &fp->_ubuf[sizeof (fp->_ubuf) - sizeof (wchar_t)]; |
---|
316 | *(wchar_t *) fp->_p = wc; |
---|
317 | fp->_r = 2; |
---|
318 | return wc; |
---|
319 | } |
---|
320 | |
---|
321 | extern int __ssrefill_r (struct _reent *ptr, register FILE * fp); |
---|
322 | |
---|
323 | static size_t |
---|
324 | _sfgetwc_r (struct _reent * ptr, |
---|
325 | FILE * fp) |
---|
326 | { |
---|
327 | wchar_t wc; |
---|
328 | |
---|
329 | if (fp->_r <= 0 && __ssrefill_r (ptr, fp)) |
---|
330 | return (WEOF); |
---|
331 | wc = *(wchar_t *) fp->_p; |
---|
332 | fp->_p += sizeof (wchar_t); |
---|
333 | fp->_r -= sizeof (wchar_t); |
---|
334 | return (wc); |
---|
335 | } |
---|
336 | #endif /* STRING_ONLY */ |
---|
337 | |
---|
338 | int |
---|
339 | __SVFWSCANF_R (struct _reent *rptr, |
---|
340 | register FILE *fp, |
---|
341 | wchar_t const *fmt0, |
---|
342 | va_list ap) |
---|
343 | { |
---|
344 | register wchar_t *fmt = (wchar_t *) fmt0; |
---|
345 | register wint_t c; /* character from format, or conversion */ |
---|
346 | register size_t width; /* field width, or 0 */ |
---|
347 | register wchar_t *p = NULL; /* points into all kinds of strings */ |
---|
348 | register int n; /* handy integer */ |
---|
349 | register int flags; /* flags as defined above */ |
---|
350 | register wchar_t *p0; /* saves original value of p when necessary */ |
---|
351 | int nassigned; /* number of fields assigned */ |
---|
352 | int nread; /* number of characters consumed from fp */ |
---|
353 | #ifndef _NO_POS_ARGS |
---|
354 | int N; /* arg number */ |
---|
355 | int arg_index = 0; /* index into args processed directly */ |
---|
356 | int numargs = 0; /* number of varargs read */ |
---|
357 | void *args[MAX_POS_ARGS]; /* positional args read */ |
---|
358 | int is_pos_arg; /* is current format positional? */ |
---|
359 | #endif |
---|
360 | int base = 0; /* base argument to wcstol/wcstoul */ |
---|
361 | |
---|
362 | mbstate_t mbs; /* value to keep track of multibyte state */ |
---|
363 | |
---|
364 | #define CCFN_PARAMS (struct _reent *, const wchar_t *, wchar_t **, int) |
---|
365 | unsigned long (*ccfn)CCFN_PARAMS=0; /* conversion function (wcstol/wcstoul) */ |
---|
366 | wchar_t buf[BUF]; /* buffer for numeric conversions */ |
---|
367 | const wchar_t *ccls; /* character class start */ |
---|
368 | const wchar_t *ccle; /* character class end */ |
---|
369 | int cclcompl = 0; /* ccl is complemented? */ |
---|
370 | wint_t wi; /* handy wint_t */ |
---|
371 | char *mbp = NULL; /* multibyte string pointer for %c %s %[ */ |
---|
372 | size_t nconv; /* number of bytes in mb. conversion */ |
---|
373 | char mbbuf[MB_LEN_MAX]; /* temporary mb. character buffer */ |
---|
374 | |
---|
375 | char *cp; |
---|
376 | short *sp; |
---|
377 | int *ip; |
---|
378 | #ifdef FLOATING_POINT |
---|
379 | float *flp; |
---|
380 | _LONG_DOUBLE *ldp; |
---|
381 | double *dp; |
---|
382 | wchar_t decpt; |
---|
383 | #endif |
---|
384 | long *lp; |
---|
385 | #ifndef _NO_LONGLONG |
---|
386 | long long *llp; |
---|
387 | #endif |
---|
388 | #ifdef _WANT_IO_C99_FORMATS |
---|
389 | #define _WANT_IO_POSIX_EXTENSIONS |
---|
390 | #endif |
---|
391 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
392 | /* POSIX requires that fwscanf frees all allocated strings from 'm' |
---|
393 | conversions in case it returns EOF. m_ptr is used to keep track. |
---|
394 | It will be allocated on the stack the first time an 'm' conversion |
---|
395 | takes place, and it will be free'd on return from the function. |
---|
396 | This implementation tries to save space by only allocating 8 |
---|
397 | pointer slots at a time. Most scenarios should never have to call |
---|
398 | realloc again. This implementation allows only up to 65528 'm' |
---|
399 | conversions per fwscanf invocation for now. That should be enough |
---|
400 | for almost all scenarios, right? */ |
---|
401 | struct m_ptrs { |
---|
402 | void ***m_arr; /* Array of pointer args to 'm' conversion */ |
---|
403 | uint16_t m_siz; /* Number of slots in m_arr */ |
---|
404 | uint16_t m_cnt; /* Number of valid entries in m_arr */ |
---|
405 | } *m_ptr = NULL; |
---|
406 | #define init_m_ptr() \ |
---|
407 | do \ |
---|
408 | { \ |
---|
409 | if (!m_ptr) \ |
---|
410 | { \ |
---|
411 | m_ptr = (struct m_ptrs *) alloca (sizeof *m_ptr); \ |
---|
412 | m_ptr->m_arr = NULL; \ |
---|
413 | m_ptr->m_siz = 0; \ |
---|
414 | m_ptr->m_cnt = 0; \ |
---|
415 | } \ |
---|
416 | } \ |
---|
417 | while (0) |
---|
418 | #define push_m_ptr(arg) \ |
---|
419 | do \ |
---|
420 | { \ |
---|
421 | if (m_ptr->m_cnt >= m_ptr->m_siz) \ |
---|
422 | { \ |
---|
423 | void ***n = NULL; \ |
---|
424 | \ |
---|
425 | if (m_ptr->m_siz + 8 > 0 && m_ptr->m_siz + 8 < UINT16_MAX) \ |
---|
426 | n = (void ***) realloc (m_ptr->m_arr, \ |
---|
427 | (m_ptr->m_siz + 8) * \ |
---|
428 | sizeof (void **)); \ |
---|
429 | if (!n) \ |
---|
430 | { \ |
---|
431 | nassigned = EOF; \ |
---|
432 | goto match_failure; \ |
---|
433 | } \ |
---|
434 | m_ptr->m_arr = n; \ |
---|
435 | m_ptr->m_siz += 8; \ |
---|
436 | } \ |
---|
437 | m_ptr->m_arr[m_ptr->m_cnt++] = (void **) (arg); \ |
---|
438 | } \ |
---|
439 | while (0) |
---|
440 | #define alloc_m_ptr(_type, _p, _p0, _p_p, _w) \ |
---|
441 | ({ \ |
---|
442 | _p_p = GET_ARG (N, ap, _type **); \ |
---|
443 | if (!_p_p) \ |
---|
444 | goto match_failure; \ |
---|
445 | _p0 = (_type *) malloc ((_w) * sizeof (_type)); \ |
---|
446 | if (!_p0) \ |
---|
447 | { \ |
---|
448 | nassigned = EOF; \ |
---|
449 | goto match_failure; \ |
---|
450 | } \ |
---|
451 | *_p_p = _p0; \ |
---|
452 | push_m_ptr (_p_p); \ |
---|
453 | _p = _p0; \ |
---|
454 | _w; \ |
---|
455 | }) |
---|
456 | /* For char output, check if there's room for at least MB_CUR_MAX |
---|
457 | characters. */ |
---|
458 | #define realloc_m_ptr(_type, _p, _p0, _p_p, _w) \ |
---|
459 | ({ \ |
---|
460 | size_t _nw = (_w); \ |
---|
461 | ptrdiff_t _dif = _p - _p0; \ |
---|
462 | if (_p_p && \ |
---|
463 | ((sizeof (_type) == 1 && _dif >= _nw - MB_CUR_MAX) \ |
---|
464 | || _dif >= _nw)) \ |
---|
465 | { \ |
---|
466 | _p0 = (_type *) realloc (_p0, (_nw << 1) * sizeof (_type)); \ |
---|
467 | if (!_p0) \ |
---|
468 | { \ |
---|
469 | nassigned = EOF; \ |
---|
470 | goto match_failure; \ |
---|
471 | } \ |
---|
472 | _p = _p0 + _dif; \ |
---|
473 | *_p_p = _p0; \ |
---|
474 | _nw <<= 1; \ |
---|
475 | } \ |
---|
476 | _nw; \ |
---|
477 | }) |
---|
478 | #define shrink_m_ptr(_type, _p_p, _w, _cw) \ |
---|
479 | ({ \ |
---|
480 | size_t _nw = (_w); \ |
---|
481 | if (_p_p && _nw < _cw) \ |
---|
482 | { \ |
---|
483 | _type *_np_p = (_type *) \ |
---|
484 | realloc (*_p_p, _nw * sizeof (_type)); \ |
---|
485 | if (_np_p) \ |
---|
486 | *_p_p = _np_p; \ |
---|
487 | } \ |
---|
488 | }) |
---|
489 | #define free_m_ptr() \ |
---|
490 | do \ |
---|
491 | { \ |
---|
492 | if (m_ptr) \ |
---|
493 | { \ |
---|
494 | if (nassigned == EOF) \ |
---|
495 | { \ |
---|
496 | int i; \ |
---|
497 | for (i = 0; i < m_ptr->m_cnt; ++i) \ |
---|
498 | { \ |
---|
499 | free (*m_ptr->m_arr[i]); \ |
---|
500 | *m_ptr->m_arr[i] = NULL; \ |
---|
501 | } \ |
---|
502 | } \ |
---|
503 | if (m_ptr->m_arr) \ |
---|
504 | free (m_ptr->m_arr); \ |
---|
505 | } \ |
---|
506 | } \ |
---|
507 | while (0) |
---|
508 | #endif |
---|
509 | |
---|
510 | /* `basefix' is used to avoid `if' tests in the integer scanner */ |
---|
511 | static const short basefix[17] = |
---|
512 | {10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}; |
---|
513 | |
---|
514 | /* Macro to support positional arguments */ |
---|
515 | #ifndef _NO_POS_ARGS |
---|
516 | # define GET_ARG(n, ap, type) \ |
---|
517 | ((type) (is_pos_arg \ |
---|
518 | ? (n < numargs \ |
---|
519 | ? args[n] \ |
---|
520 | : get_arg (n, &ap, &numargs, args)) \ |
---|
521 | : (arg_index++ < numargs \ |
---|
522 | ? args[n] \ |
---|
523 | : (numargs < MAX_POS_ARGS \ |
---|
524 | ? args[numargs++] = va_arg (ap, void *) \ |
---|
525 | : va_arg (ap, void *))))) |
---|
526 | #else |
---|
527 | # define GET_ARG(n, ap, type) (va_arg (ap, type)) |
---|
528 | #endif |
---|
529 | |
---|
530 | #ifdef FLOATING_POINT |
---|
531 | #ifdef _MB_CAPABLE |
---|
532 | #ifdef __HAVE_LOCALE_INFO_EXTENDED__ |
---|
533 | decpt = *__get_current_numeric_locale ()->wdecimal_point; |
---|
534 | #else |
---|
535 | { |
---|
536 | size_t nconv; |
---|
537 | |
---|
538 | memset (&mbs, '\0', sizeof (mbs)); |
---|
539 | nconv = _mbrtowc_r (rptr, &decpt, |
---|
540 | _localeconv_r (rptr)->decimal_point, |
---|
541 | MB_CUR_MAX, &mbs); |
---|
542 | if (nconv == (size_t) -1 || nconv == (size_t) -2) |
---|
543 | decpt = L'.'; |
---|
544 | } |
---|
545 | #endif /* !__HAVE_LOCALE_INFO_EXTENDED__ */ |
---|
546 | #else |
---|
547 | decpt = (wchar_t) *_localeconv_r (rptr)->decimal_point; |
---|
548 | #endif /* !_MB_CAPABLE */ |
---|
549 | #endif /* FLOATING_POINT */ |
---|
550 | |
---|
551 | _newlib_flockfile_start (fp); |
---|
552 | |
---|
553 | ORIENT (fp, 1); |
---|
554 | |
---|
555 | nassigned = 0; |
---|
556 | nread = 0; |
---|
557 | ccls = ccle = NULL; |
---|
558 | for (;;) |
---|
559 | { |
---|
560 | c = *fmt++; |
---|
561 | if (c == L'\0') |
---|
562 | goto all_done; |
---|
563 | if (iswspace (c)) |
---|
564 | { |
---|
565 | while ((c = _fgetwc_r (rptr, fp)) != WEOF && iswspace(c)) |
---|
566 | ; |
---|
567 | if (c != WEOF) |
---|
568 | _ungetwc_r (rptr, c, fp); |
---|
569 | continue; |
---|
570 | } |
---|
571 | if (c != L'%') |
---|
572 | goto literal; |
---|
573 | width = 0; |
---|
574 | flags = 0; |
---|
575 | #ifndef _NO_POS_ARGS |
---|
576 | N = arg_index; |
---|
577 | is_pos_arg = 0; |
---|
578 | #endif |
---|
579 | |
---|
580 | /* |
---|
581 | * switch on the format. continue if done; break once format |
---|
582 | * type is derived. |
---|
583 | */ |
---|
584 | |
---|
585 | again: |
---|
586 | c = *fmt++; |
---|
587 | |
---|
588 | switch (c) |
---|
589 | { |
---|
590 | case L'%': |
---|
591 | literal: |
---|
592 | if ((wi = _fgetwc_r (rptr, fp)) == WEOF) |
---|
593 | goto input_failure; |
---|
594 | if (wi != c) |
---|
595 | { |
---|
596 | _ungetwc_r (rptr, wi, fp); |
---|
597 | goto input_failure; |
---|
598 | } |
---|
599 | nread++; |
---|
600 | continue; |
---|
601 | |
---|
602 | case L'*': |
---|
603 | if ((flags & (CHAR | SHORT | LONG | LONGDBL | SUPPRESS | MALLOC)) |
---|
604 | || width) |
---|
605 | flags |= SUPPRESS; |
---|
606 | goto again; |
---|
607 | case L'l': |
---|
608 | if (flags & (CHAR | SHORT | LONG | LONGDBL)) |
---|
609 | goto match_failure; |
---|
610 | #if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG |
---|
611 | if (*fmt == L'l') /* Check for 'll' = long long (SUSv3) */ |
---|
612 | { |
---|
613 | ++fmt; |
---|
614 | flags |= LONGDBL; |
---|
615 | } |
---|
616 | else |
---|
617 | #endif |
---|
618 | flags |= LONG; |
---|
619 | goto again; |
---|
620 | case L'L': |
---|
621 | if (flags & (CHAR | SHORT | LONG | LONGDBL)) |
---|
622 | goto match_failure; |
---|
623 | flags |= LONGDBL; |
---|
624 | goto again; |
---|
625 | case L'h': |
---|
626 | #ifdef _WANT_IO_C99_FORMATS |
---|
627 | if (flags & (CHAR | SHORT | LONG | LONGDBL)) |
---|
628 | goto match_failure; |
---|
629 | if (*fmt == 'h') /* Check for 'hh' = char int (SUSv3) */ |
---|
630 | { |
---|
631 | ++fmt; |
---|
632 | flags |= CHAR; |
---|
633 | } |
---|
634 | else |
---|
635 | #endif |
---|
636 | flags |= SHORT; |
---|
637 | goto again; |
---|
638 | #ifdef _WANT_IO_C99_FORMATS |
---|
639 | case L'j': /* intmax_t */ |
---|
640 | if (flags & (CHAR | SHORT | LONG | LONGDBL)) |
---|
641 | goto match_failure; |
---|
642 | if (sizeof (intmax_t) == sizeof (long)) |
---|
643 | flags |= LONG; |
---|
644 | else |
---|
645 | flags |= LONGDBL; |
---|
646 | goto again; |
---|
647 | case L't': /* ptrdiff_t */ |
---|
648 | if (flags & (CHAR | SHORT | LONG | LONGDBL)) |
---|
649 | goto match_failure; |
---|
650 | if (sizeof (ptrdiff_t) < sizeof (int)) |
---|
651 | /* POSIX states ptrdiff_t is 16 or more bits, as |
---|
652 | is short. */ |
---|
653 | flags |= SHORT; |
---|
654 | else if (sizeof (ptrdiff_t) == sizeof (int)) |
---|
655 | /* no flag needed */; |
---|
656 | else if (sizeof (ptrdiff_t) <= sizeof (long)) |
---|
657 | flags |= LONG; |
---|
658 | else |
---|
659 | /* POSIX states that at least one programming |
---|
660 | environment must support ptrdiff_t no wider than |
---|
661 | long, but that means other environments can |
---|
662 | have ptrdiff_t as wide as long long. */ |
---|
663 | flags |= LONGDBL; |
---|
664 | goto again; |
---|
665 | case L'z': /* size_t */ |
---|
666 | if (flags & (CHAR | SHORT | LONG | LONGDBL)) |
---|
667 | goto match_failure; |
---|
668 | if (sizeof (size_t) < sizeof (int)) |
---|
669 | /* POSIX states size_t is 16 or more bits, as is short. */ |
---|
670 | flags |= SHORT; |
---|
671 | else if (sizeof (size_t) == sizeof (int)) |
---|
672 | /* no flag needed */; |
---|
673 | else if (sizeof (size_t) <= sizeof (long)) |
---|
674 | flags |= LONG; |
---|
675 | else |
---|
676 | /* POSIX states that at least one programming |
---|
677 | environment must support size_t no wider than |
---|
678 | long, but that means other environments can |
---|
679 | have size_t as wide as long long. */ |
---|
680 | flags |= LONGDBL; |
---|
681 | goto again; |
---|
682 | #endif /* _WANT_IO_C99_FORMATS */ |
---|
683 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
684 | case 'm': |
---|
685 | if (flags & (CHAR | SHORT | LONG | LONGDBL | MALLOC)) |
---|
686 | goto match_failure; |
---|
687 | init_m_ptr (); |
---|
688 | flags |= MALLOC; |
---|
689 | goto again; |
---|
690 | #endif |
---|
691 | |
---|
692 | case L'0': |
---|
693 | case L'1': |
---|
694 | case L'2': |
---|
695 | case L'3': |
---|
696 | case L'4': |
---|
697 | case L'5': |
---|
698 | case L'6': |
---|
699 | case L'7': |
---|
700 | case L'8': |
---|
701 | case L'9': |
---|
702 | if (flags & (CHAR | SHORT | LONG | LONGDBL | MALLOC)) |
---|
703 | goto match_failure; |
---|
704 | width = width * 10 + c - L'0'; |
---|
705 | goto again; |
---|
706 | |
---|
707 | #ifndef _NO_POS_ARGS |
---|
708 | case L'$': |
---|
709 | if (flags & (CHAR | SHORT | LONG | LONGDBL | SUPPRESS | MALLOC)) |
---|
710 | goto match_failure; |
---|
711 | if (width <= MAX_POS_ARGS) |
---|
712 | { |
---|
713 | N = width - 1; |
---|
714 | is_pos_arg = 1; |
---|
715 | width = 0; |
---|
716 | goto again; |
---|
717 | } |
---|
718 | rptr->_errno = EINVAL; |
---|
719 | goto input_failure; |
---|
720 | #endif /* !_NO_POS_ARGS */ |
---|
721 | |
---|
722 | case L'd': |
---|
723 | c = CT_INT; |
---|
724 | ccfn = (unsigned long (*)CCFN_PARAMS)_wcstol_r; |
---|
725 | base = 10; |
---|
726 | break; |
---|
727 | |
---|
728 | case L'i': |
---|
729 | c = CT_INT; |
---|
730 | ccfn = (unsigned long (*)CCFN_PARAMS)_wcstol_r; |
---|
731 | base = 0; |
---|
732 | break; |
---|
733 | |
---|
734 | case L'o': |
---|
735 | c = CT_INT; |
---|
736 | ccfn = _wcstoul_r; |
---|
737 | base = 8; |
---|
738 | break; |
---|
739 | |
---|
740 | case L'u': |
---|
741 | c = CT_INT; |
---|
742 | ccfn = _wcstoul_r; |
---|
743 | base = 10; |
---|
744 | break; |
---|
745 | |
---|
746 | case L'X': |
---|
747 | case L'x': |
---|
748 | flags |= PFXOK; /* enable 0x prefixing */ |
---|
749 | c = CT_INT; |
---|
750 | ccfn = _wcstoul_r; |
---|
751 | base = 16; |
---|
752 | break; |
---|
753 | |
---|
754 | #ifdef FLOATING_POINT |
---|
755 | # ifdef _WANT_IO_C99_FORMATS |
---|
756 | case L'A': |
---|
757 | case L'a': |
---|
758 | case L'F': |
---|
759 | # endif |
---|
760 | case L'E': |
---|
761 | case L'G': |
---|
762 | case L'e': |
---|
763 | case L'f': |
---|
764 | case L'g': |
---|
765 | c = CT_FLOAT; |
---|
766 | break; |
---|
767 | #endif |
---|
768 | |
---|
769 | #ifdef _WANT_IO_C99_FORMATS |
---|
770 | case L'S': |
---|
771 | flags |= LONG; |
---|
772 | /* FALLTHROUGH */ |
---|
773 | #endif |
---|
774 | |
---|
775 | case L's': |
---|
776 | c = CT_STRING; |
---|
777 | break; |
---|
778 | |
---|
779 | case L'[': |
---|
780 | if (*fmt == '^') |
---|
781 | { |
---|
782 | cclcompl = 1; |
---|
783 | ++fmt; |
---|
784 | } |
---|
785 | else |
---|
786 | cclcompl = 0; |
---|
787 | ccls = fmt; |
---|
788 | if (*fmt == ']') |
---|
789 | fmt++; |
---|
790 | while (*fmt != '\0' && *fmt != ']') |
---|
791 | fmt++; |
---|
792 | ccle = fmt; |
---|
793 | fmt++; |
---|
794 | flags |= NOSKIP; |
---|
795 | c = CT_CCL; |
---|
796 | break; |
---|
797 | |
---|
798 | #ifdef _WANT_IO_C99_FORMATS |
---|
799 | case 'C': |
---|
800 | flags |= LONG; |
---|
801 | /* FALLTHROUGH */ |
---|
802 | #endif |
---|
803 | |
---|
804 | case 'c': |
---|
805 | flags |= NOSKIP; |
---|
806 | c = CT_CHAR; |
---|
807 | break; |
---|
808 | |
---|
809 | case 'p': /* pointer format is like hex */ |
---|
810 | flags |= POINTER | PFXOK; |
---|
811 | c = CT_INT; |
---|
812 | ccfn = _wcstoul_r; |
---|
813 | base = 16; |
---|
814 | break; |
---|
815 | |
---|
816 | case 'n': |
---|
817 | if (flags & SUPPRESS) /* ??? */ |
---|
818 | continue; |
---|
819 | #ifdef _WANT_IO_C99_FORMATS |
---|
820 | if (flags & CHAR) |
---|
821 | { |
---|
822 | cp = GET_ARG (N, ap, char *); |
---|
823 | *cp = nread; |
---|
824 | } |
---|
825 | else |
---|
826 | #endif |
---|
827 | if (flags & SHORT) |
---|
828 | { |
---|
829 | sp = GET_ARG (N, ap, short *); |
---|
830 | *sp = nread; |
---|
831 | } |
---|
832 | else if (flags & LONG) |
---|
833 | { |
---|
834 | lp = GET_ARG (N, ap, long *); |
---|
835 | *lp = nread; |
---|
836 | } |
---|
837 | #ifndef _NO_LONGLONG |
---|
838 | else if (flags & LONGDBL) |
---|
839 | { |
---|
840 | llp = GET_ARG (N, ap, long long*); |
---|
841 | *llp = nread; |
---|
842 | } |
---|
843 | #endif |
---|
844 | else |
---|
845 | { |
---|
846 | ip = GET_ARG (N, ap, int *); |
---|
847 | *ip = nread; |
---|
848 | } |
---|
849 | continue; |
---|
850 | |
---|
851 | default: |
---|
852 | goto match_failure; |
---|
853 | } |
---|
854 | |
---|
855 | /* |
---|
856 | * Consume leading white space, except for formats that |
---|
857 | * suppress this. |
---|
858 | */ |
---|
859 | if ((flags & NOSKIP) == 0) |
---|
860 | { |
---|
861 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF && iswspace (wi)) |
---|
862 | nread++; |
---|
863 | if (wi == WEOF) |
---|
864 | goto input_failure; |
---|
865 | _ungetwc_r (rptr, wi, fp); |
---|
866 | } |
---|
867 | |
---|
868 | /* |
---|
869 | * Do the conversion. |
---|
870 | */ |
---|
871 | switch (c) |
---|
872 | { |
---|
873 | |
---|
874 | case CT_CHAR: |
---|
875 | /* scan arbitrary characters (sets NOSKIP) */ |
---|
876 | if (width == 0) |
---|
877 | width = 1; |
---|
878 | if (flags & LONG) |
---|
879 | { |
---|
880 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
881 | wchar_t **p_p = NULL; |
---|
882 | wchar_t *p0 = NULL; |
---|
883 | size_t p_siz = 0; |
---|
884 | #endif |
---|
885 | |
---|
886 | if (flags & SUPPRESS) |
---|
887 | ; |
---|
888 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
889 | else if (flags & MALLOC) |
---|
890 | p_siz = alloc_m_ptr (wchar_t, p, p0, p_p, 32); |
---|
891 | #endif |
---|
892 | else |
---|
893 | p = GET_ARG(N, ap, wchar_t *); |
---|
894 | n = 0; |
---|
895 | while (width-- != 0 && (wi = _fgetwc_r (rptr, fp)) != WEOF) |
---|
896 | { |
---|
897 | if (!(flags & SUPPRESS)) |
---|
898 | { |
---|
899 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
900 | /* Check before ++ because we never add a \0 */ |
---|
901 | p_siz = realloc_m_ptr (wchar_t, p, p0, p_p, p_siz); |
---|
902 | #endif |
---|
903 | *p++ = (wchar_t) wi; |
---|
904 | } |
---|
905 | n++; |
---|
906 | } |
---|
907 | if (n == 0) |
---|
908 | goto input_failure; |
---|
909 | nread += n; |
---|
910 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
911 | shrink_m_ptr (wchar_t, p_p, p - p0, p_siz); |
---|
912 | #endif |
---|
913 | if (!(flags & SUPPRESS)) |
---|
914 | nassigned++; |
---|
915 | } |
---|
916 | else |
---|
917 | { |
---|
918 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
919 | char **mbp_p = NULL; |
---|
920 | char *mbp0 = NULL; |
---|
921 | size_t mbp_siz = 0; |
---|
922 | #endif |
---|
923 | |
---|
924 | if (flags & SUPPRESS) |
---|
925 | mbp = mbbuf; |
---|
926 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
927 | else if (flags & MALLOC) |
---|
928 | mbp_siz = alloc_m_ptr (char, mbp, mbp0, mbp_p, 32); |
---|
929 | #endif |
---|
930 | else |
---|
931 | mbp = GET_ARG(N, ap, char *); |
---|
932 | n = 0; |
---|
933 | memset ((void *)&mbs, '\0', sizeof (mbstate_t)); |
---|
934 | while (width != 0 && (wi = _fgetwc_r (rptr, fp)) != WEOF) |
---|
935 | { |
---|
936 | nconv = _wcrtomb_r (rptr, mbp, wi, &mbs); |
---|
937 | if (nconv == (size_t) -1) |
---|
938 | goto input_failure; |
---|
939 | /* Ignore high surrogate in width counting */ |
---|
940 | if (nconv != 0 || mbs.__count != -4) |
---|
941 | width--; |
---|
942 | if (!(flags & SUPPRESS)) |
---|
943 | { |
---|
944 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
945 | mbp_siz = realloc_m_ptr (char, mbp, mbp0, mbp_p, mbp_siz); |
---|
946 | #endif |
---|
947 | mbp += nconv; |
---|
948 | } |
---|
949 | n++; |
---|
950 | } |
---|
951 | if (n == 0) |
---|
952 | goto input_failure; |
---|
953 | nread += n; |
---|
954 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
955 | shrink_m_ptr (char, mbp_p, mbp - mbp0, mbp_siz); |
---|
956 | #endif |
---|
957 | if (!(flags & SUPPRESS)) |
---|
958 | nassigned++; |
---|
959 | } |
---|
960 | break; |
---|
961 | |
---|
962 | case CT_CCL: |
---|
963 | /* scan a (nonempty) character class (sets NOSKIP) */ |
---|
964 | if (width == 0) |
---|
965 | width = SIZE_MAX; /* `infinity' */ |
---|
966 | /* take only those things in the class */ |
---|
967 | if ((flags & SUPPRESS) && (flags & LONG)) |
---|
968 | { |
---|
969 | n = 0; |
---|
970 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF |
---|
971 | && width-- != 0 && INCCL (wi)) |
---|
972 | n++; |
---|
973 | if (wi != WEOF) |
---|
974 | _ungetwc_r (rptr, wi, fp); |
---|
975 | if (n == 0) |
---|
976 | goto match_failure; |
---|
977 | } |
---|
978 | else if (flags & LONG) |
---|
979 | { |
---|
980 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
981 | wchar_t **p_p = NULL; |
---|
982 | size_t p_siz = 0; |
---|
983 | |
---|
984 | if (flags & MALLOC) |
---|
985 | p_siz = alloc_m_ptr (wchar_t, p, p0, p_p, 32); |
---|
986 | else |
---|
987 | #endif |
---|
988 | p0 = p = GET_ARG(N, ap, wchar_t *); |
---|
989 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF |
---|
990 | && width-- != 0 && INCCL (wi)) |
---|
991 | { |
---|
992 | *p++ = (wchar_t) wi; |
---|
993 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
994 | p_siz = realloc_m_ptr (wchar_t, p, p0, p_p, p_siz); |
---|
995 | #endif |
---|
996 | } |
---|
997 | if (wi != WEOF) |
---|
998 | _ungetwc_r (rptr, wi, fp); |
---|
999 | n = p - p0; |
---|
1000 | if (n == 0) |
---|
1001 | goto match_failure; |
---|
1002 | *p = L'\0'; |
---|
1003 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1004 | shrink_m_ptr (wchar_t, p_p, n + 1, p_siz); |
---|
1005 | #endif |
---|
1006 | nassigned++; |
---|
1007 | } |
---|
1008 | else |
---|
1009 | { |
---|
1010 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1011 | char **mbp_p = NULL; |
---|
1012 | char *mbp0 = NULL; |
---|
1013 | size_t mbp_siz = 0; |
---|
1014 | #endif |
---|
1015 | |
---|
1016 | if (flags & SUPPRESS) |
---|
1017 | mbp = mbbuf; |
---|
1018 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1019 | else if (flags & MALLOC) |
---|
1020 | mbp_siz = alloc_m_ptr (char, mbp, mbp0, mbp_p, 32); |
---|
1021 | #endif |
---|
1022 | else |
---|
1023 | mbp = GET_ARG(N, ap, char *); |
---|
1024 | n = 0; |
---|
1025 | memset ((void *) &mbs, '\0', sizeof (mbstate_t)); |
---|
1026 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF |
---|
1027 | && width != 0 && INCCL (wi)) |
---|
1028 | { |
---|
1029 | nconv = _wcrtomb_r (rptr, mbp, wi, &mbs); |
---|
1030 | if (nconv == (size_t) -1) |
---|
1031 | goto input_failure; |
---|
1032 | /* Ignore high surrogate in width counting */ |
---|
1033 | if (nconv != 0 || mbs.__count != -4) |
---|
1034 | width--; |
---|
1035 | if (!(flags & SUPPRESS)) |
---|
1036 | { |
---|
1037 | mbp += nconv; |
---|
1038 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1039 | mbp_siz = realloc_m_ptr (char, mbp, mbp0, mbp_p, mbp_siz); |
---|
1040 | #endif |
---|
1041 | } |
---|
1042 | n++; |
---|
1043 | } |
---|
1044 | if (wi != WEOF) |
---|
1045 | _ungetwc_r (rptr, wi, fp); |
---|
1046 | if (!(flags & SUPPRESS)) |
---|
1047 | { |
---|
1048 | *mbp = 0; |
---|
1049 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1050 | shrink_m_ptr (char, mbp_p, mbp - mbp0 + 1, mbp_siz); |
---|
1051 | #endif |
---|
1052 | nassigned++; |
---|
1053 | } |
---|
1054 | } |
---|
1055 | nread += n; |
---|
1056 | break; |
---|
1057 | |
---|
1058 | case CT_STRING: |
---|
1059 | /* like CCL, but zero-length string OK, & no NOSKIP */ |
---|
1060 | if (width == 0) |
---|
1061 | width = SIZE_MAX; |
---|
1062 | if ((flags & SUPPRESS) && (flags & LONG)) |
---|
1063 | { |
---|
1064 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF |
---|
1065 | && width-- != 0 && !iswspace (wi)) |
---|
1066 | nread++; |
---|
1067 | if (wi != WEOF) |
---|
1068 | _ungetwc_r (rptr, wi, fp); |
---|
1069 | } |
---|
1070 | else if (flags & LONG) |
---|
1071 | { |
---|
1072 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1073 | wchar_t **p_p = NULL; |
---|
1074 | size_t p_siz = 0; |
---|
1075 | |
---|
1076 | if (flags & MALLOC) |
---|
1077 | p_siz = alloc_m_ptr (wchar_t, p, p0, p_p, 32); |
---|
1078 | else |
---|
1079 | #endif |
---|
1080 | p0 = p = GET_ARG(N, ap, wchar_t *); |
---|
1081 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF |
---|
1082 | && width-- != 0 && !iswspace (wi)) |
---|
1083 | { |
---|
1084 | *p++ = (wchar_t) wi; |
---|
1085 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1086 | p_siz = realloc_m_ptr (wchar_t, p, p0, p_p, p_siz); |
---|
1087 | #endif |
---|
1088 | nread++; |
---|
1089 | } |
---|
1090 | if (wi != WEOF) |
---|
1091 | _ungetwc_r (rptr, wi, fp); |
---|
1092 | *p = L'\0'; |
---|
1093 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1094 | shrink_m_ptr (wchar_t, p_p, p - p0 + 1, p_siz); |
---|
1095 | #endif |
---|
1096 | nassigned++; |
---|
1097 | } |
---|
1098 | else |
---|
1099 | { |
---|
1100 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1101 | char **mbp_p = NULL; |
---|
1102 | char *mbp0 = NULL; |
---|
1103 | size_t mbp_siz = 0; |
---|
1104 | #endif |
---|
1105 | |
---|
1106 | if (flags & SUPPRESS) |
---|
1107 | mbp = mbbuf; |
---|
1108 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1109 | else if (flags & MALLOC) |
---|
1110 | mbp_siz = alloc_m_ptr (char, mbp, mbp0, mbp_p, 32); |
---|
1111 | #endif |
---|
1112 | else |
---|
1113 | mbp = GET_ARG(N, ap, char *); |
---|
1114 | memset ((void *) &mbs, '\0', sizeof (mbstate_t)); |
---|
1115 | while ((wi = _fgetwc_r (rptr, fp)) != WEOF |
---|
1116 | && width != 0 && !iswspace (wi)) |
---|
1117 | { |
---|
1118 | nconv = wcrtomb(mbp, wi, &mbs); |
---|
1119 | if (nconv == (size_t)-1) |
---|
1120 | goto input_failure; |
---|
1121 | /* Ignore high surrogate in width counting */ |
---|
1122 | if (nconv != 0 || mbs.__count != -4) |
---|
1123 | width--; |
---|
1124 | if (!(flags & SUPPRESS)) |
---|
1125 | { |
---|
1126 | mbp += nconv; |
---|
1127 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1128 | mbp_siz = realloc_m_ptr (char, mbp, mbp0, mbp_p, mbp_siz); |
---|
1129 | #endif |
---|
1130 | } |
---|
1131 | nread++; |
---|
1132 | } |
---|
1133 | if (wi != WEOF) |
---|
1134 | _ungetwc_r (rptr, wi, fp); |
---|
1135 | if (!(flags & SUPPRESS)) |
---|
1136 | { |
---|
1137 | *mbp = 0; |
---|
1138 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1139 | shrink_m_ptr (char, mbp_p, mbp - mbp0 + 1, mbp_siz); |
---|
1140 | #endif |
---|
1141 | nassigned++; |
---|
1142 | } |
---|
1143 | } |
---|
1144 | continue; |
---|
1145 | |
---|
1146 | case CT_INT: |
---|
1147 | { |
---|
1148 | /* scan an integer as if by wcstol/wcstoul */ |
---|
1149 | if (width == 0 || width > sizeof (buf) / sizeof (*buf) - 1) |
---|
1150 | width = sizeof(buf) / sizeof (*buf) - 1; |
---|
1151 | flags |= SIGNOK | NDIGITS | NZDIGITS; |
---|
1152 | for (p = buf; width; width--) |
---|
1153 | { |
---|
1154 | c = _fgetwc_r (rptr, fp); |
---|
1155 | /* |
---|
1156 | * Switch on the character; `goto ok' if we |
---|
1157 | * accept it as a part of number. |
---|
1158 | */ |
---|
1159 | switch (c) |
---|
1160 | { |
---|
1161 | /* |
---|
1162 | * The digit 0 is always legal, but is special. |
---|
1163 | * For %i conversions, if no digits (zero or nonzero) |
---|
1164 | * have been scanned (only signs), we will have base==0. |
---|
1165 | * In that case, we should set it to 8 and enable 0x |
---|
1166 | * prefixing. Also, if we have not scanned zero digits |
---|
1167 | * before this, do not turn off prefixing (someone else |
---|
1168 | * will turn it off if we have scanned any nonzero digits). |
---|
1169 | */ |
---|
1170 | case L'0': |
---|
1171 | if (base == 0) |
---|
1172 | { |
---|
1173 | base = 8; |
---|
1174 | flags |= PFXOK; |
---|
1175 | } |
---|
1176 | if (flags & NZDIGITS) |
---|
1177 | flags &= ~(SIGNOK | NZDIGITS | NDIGITS); |
---|
1178 | else |
---|
1179 | flags &= ~(SIGNOK | PFXOK | NDIGITS); |
---|
1180 | goto ok; |
---|
1181 | |
---|
1182 | /* 1 through 7 always legal */ |
---|
1183 | case L'1': |
---|
1184 | case L'2': |
---|
1185 | case L'3': |
---|
1186 | case L'4': |
---|
1187 | case L'5': |
---|
1188 | case L'6': |
---|
1189 | case L'7': |
---|
1190 | base = basefix[base]; |
---|
1191 | flags &= ~(SIGNOK | PFXOK | NDIGITS); |
---|
1192 | goto ok; |
---|
1193 | |
---|
1194 | /* digits 8 and 9 ok iff decimal or hex */ |
---|
1195 | case L'8': |
---|
1196 | case L'9': |
---|
1197 | base = basefix[base]; |
---|
1198 | if (base <= 8) |
---|
1199 | break; /* not legal here */ |
---|
1200 | flags &= ~(SIGNOK | PFXOK | NDIGITS); |
---|
1201 | goto ok; |
---|
1202 | |
---|
1203 | /* letters ok iff hex */ |
---|
1204 | case L'A': |
---|
1205 | case L'B': |
---|
1206 | case L'C': |
---|
1207 | case L'D': |
---|
1208 | case L'E': |
---|
1209 | case L'F': |
---|
1210 | case L'a': |
---|
1211 | case L'b': |
---|
1212 | case L'c': |
---|
1213 | case L'd': |
---|
1214 | case L'e': |
---|
1215 | case L'f': |
---|
1216 | /* no need to fix base here */ |
---|
1217 | if (base <= 10) |
---|
1218 | break; /* not legal here */ |
---|
1219 | flags &= ~(SIGNOK | PFXOK | NDIGITS); |
---|
1220 | goto ok; |
---|
1221 | |
---|
1222 | /* sign ok only as first character */ |
---|
1223 | case L'+': |
---|
1224 | case L'-': |
---|
1225 | if (flags & SIGNOK) |
---|
1226 | { |
---|
1227 | flags &= ~SIGNOK; |
---|
1228 | flags |= HAVESIGN; |
---|
1229 | goto ok; |
---|
1230 | } |
---|
1231 | break; |
---|
1232 | |
---|
1233 | /* x ok iff flag still set & single 0 seen */ |
---|
1234 | case L'x': |
---|
1235 | case L'X': |
---|
1236 | if ((flags & PFXOK) && p == buf + 1 + !!(flags & HAVESIGN)) |
---|
1237 | { |
---|
1238 | base = 16;/* if %i */ |
---|
1239 | flags &= ~PFXOK; |
---|
1240 | goto ok; |
---|
1241 | } |
---|
1242 | break; |
---|
1243 | } |
---|
1244 | |
---|
1245 | /* |
---|
1246 | * If we got here, c is not a legal character |
---|
1247 | * for a number. Stop accumulating digits. |
---|
1248 | */ |
---|
1249 | if (c != WEOF) |
---|
1250 | _ungetwc_r (rptr, c, fp); |
---|
1251 | break; |
---|
1252 | ok: |
---|
1253 | /* |
---|
1254 | * c is legal: store it and look at the next. |
---|
1255 | */ |
---|
1256 | *p++ = (wchar_t) c; |
---|
1257 | } |
---|
1258 | /* |
---|
1259 | * If we had only a sign, it is no good; push back the sign. |
---|
1260 | * If the number ends in `x', it was [sign] '0' 'x', so push back |
---|
1261 | * the x and treat it as [sign] '0'. |
---|
1262 | * Use of ungetc here and below assumes ASCII encoding; we are only |
---|
1263 | * pushing back 7-bit characters, so casting to unsigned char is |
---|
1264 | * not necessary. |
---|
1265 | */ |
---|
1266 | if (flags & NDIGITS) |
---|
1267 | { |
---|
1268 | if (p > buf) |
---|
1269 | _ungetwc_r (rptr, *--p, fp); /* [-+xX] */ |
---|
1270 | goto match_failure; |
---|
1271 | } |
---|
1272 | c = p[-1]; |
---|
1273 | if (c == L'x' || c == L'X') |
---|
1274 | { |
---|
1275 | --p; |
---|
1276 | _ungetwc_r (rptr, c, fp); |
---|
1277 | } |
---|
1278 | if ((flags & SUPPRESS) == 0) |
---|
1279 | { |
---|
1280 | unsigned long res; |
---|
1281 | |
---|
1282 | *p = 0; |
---|
1283 | res = (*ccfn) (rptr, buf, (wchar_t **) NULL, base); |
---|
1284 | if (flags & POINTER) |
---|
1285 | { |
---|
1286 | void **vp = GET_ARG (N, ap, void **); |
---|
1287 | #ifndef _NO_LONGLONG |
---|
1288 | if (sizeof (uintptr_t) > sizeof (unsigned long)) |
---|
1289 | { |
---|
1290 | unsigned long long resll; |
---|
1291 | resll = _wcstoull_r (rptr, buf, (wchar_t **) NULL, base); |
---|
1292 | *vp = (void *) (uintptr_t) resll; |
---|
1293 | } |
---|
1294 | else |
---|
1295 | #endif /* !_NO_LONGLONG */ |
---|
1296 | *vp = (void *) (uintptr_t) res; |
---|
1297 | } |
---|
1298 | #ifdef _WANT_IO_C99_FORMATS |
---|
1299 | else if (flags & CHAR) |
---|
1300 | { |
---|
1301 | cp = GET_ARG (N, ap, char *); |
---|
1302 | *cp = res; |
---|
1303 | } |
---|
1304 | #endif |
---|
1305 | else if (flags & SHORT) |
---|
1306 | { |
---|
1307 | sp = GET_ARG (N, ap, short *); |
---|
1308 | *sp = res; |
---|
1309 | } |
---|
1310 | else if (flags & LONG) |
---|
1311 | { |
---|
1312 | lp = GET_ARG (N, ap, long *); |
---|
1313 | *lp = res; |
---|
1314 | } |
---|
1315 | #ifndef _NO_LONGLONG |
---|
1316 | else if (flags & LONGDBL) |
---|
1317 | { |
---|
1318 | unsigned long long resll; |
---|
1319 | if (ccfn == _wcstoul_r) |
---|
1320 | resll = _wcstoull_r (rptr, buf, (wchar_t **) NULL, base); |
---|
1321 | else |
---|
1322 | resll = _wcstoll_r (rptr, buf, (wchar_t **) NULL, base); |
---|
1323 | llp = GET_ARG (N, ap, long long*); |
---|
1324 | *llp = resll; |
---|
1325 | } |
---|
1326 | #endif |
---|
1327 | else |
---|
1328 | { |
---|
1329 | ip = GET_ARG (N, ap, int *); |
---|
1330 | *ip = res; |
---|
1331 | } |
---|
1332 | nassigned++; |
---|
1333 | } |
---|
1334 | nread += p - buf; |
---|
1335 | break; |
---|
1336 | } |
---|
1337 | #ifdef FLOATING_POINT |
---|
1338 | case CT_FLOAT: |
---|
1339 | { |
---|
1340 | /* scan a floating point number as if by wcstod */ |
---|
1341 | /* This code used to assume that the number of digits is reasonable. |
---|
1342 | However, ANSI / ISO C makes no such stipulation; we have to get |
---|
1343 | exact results even when there is an unreasonable amount of |
---|
1344 | leading zeroes. */ |
---|
1345 | long leading_zeroes = 0; |
---|
1346 | long zeroes, exp_adjust; |
---|
1347 | wchar_t *exp_start = NULL; |
---|
1348 | unsigned width_left = 0; |
---|
1349 | char nancount = 0; |
---|
1350 | char infcount = 0; |
---|
1351 | #ifdef hardway |
---|
1352 | if (width == 0 || width > sizeof (buf) / sizeof (*buf) - 1) |
---|
1353 | #else |
---|
1354 | /* size_t is unsigned, hence this optimisation */ |
---|
1355 | if (width - 1 > sizeof (buf) / sizeof (*buf) - 2) |
---|
1356 | #endif |
---|
1357 | { |
---|
1358 | width_left = width - (sizeof (buf) / sizeof (*buf) - 1); |
---|
1359 | width = sizeof (buf) / sizeof (*buf) - 1; |
---|
1360 | } |
---|
1361 | flags |= SIGNOK | NDIGITS | DPTOK | EXPOK; |
---|
1362 | zeroes = 0; |
---|
1363 | exp_adjust = 0; |
---|
1364 | for (p = buf; width; ) |
---|
1365 | { |
---|
1366 | c = _fgetwc_r (rptr, fp); |
---|
1367 | /* |
---|
1368 | * This code mimicks the integer conversion |
---|
1369 | * code, but is much simpler. |
---|
1370 | */ |
---|
1371 | switch (c) |
---|
1372 | { |
---|
1373 | case L'0': |
---|
1374 | if (flags & NDIGITS) |
---|
1375 | { |
---|
1376 | flags &= ~SIGNOK; |
---|
1377 | zeroes++; |
---|
1378 | if (width_left) |
---|
1379 | { |
---|
1380 | width_left--; |
---|
1381 | width++; |
---|
1382 | } |
---|
1383 | goto fskip; |
---|
1384 | } |
---|
1385 | /* Fall through. */ |
---|
1386 | case L'1': |
---|
1387 | case L'2': |
---|
1388 | case L'3': |
---|
1389 | case L'4': |
---|
1390 | case L'5': |
---|
1391 | case L'6': |
---|
1392 | case L'7': |
---|
1393 | case L'8': |
---|
1394 | case L'9': |
---|
1395 | if (nancount + infcount == 0) |
---|
1396 | { |
---|
1397 | flags &= ~(SIGNOK | NDIGITS); |
---|
1398 | goto fok; |
---|
1399 | } |
---|
1400 | break; |
---|
1401 | |
---|
1402 | case L'+': |
---|
1403 | case L'-': |
---|
1404 | if (flags & SIGNOK) |
---|
1405 | { |
---|
1406 | flags &= ~SIGNOK; |
---|
1407 | goto fok; |
---|
1408 | } |
---|
1409 | break; |
---|
1410 | case L'n': |
---|
1411 | case L'N': |
---|
1412 | if (nancount == 0 && zeroes == 0 |
---|
1413 | && (flags & (NDIGITS | DPTOK | EXPOK)) == |
---|
1414 | (NDIGITS | DPTOK | EXPOK)) |
---|
1415 | { |
---|
1416 | flags &= ~(SIGNOK | DPTOK | EXPOK | NDIGITS); |
---|
1417 | nancount = 1; |
---|
1418 | goto fok; |
---|
1419 | } |
---|
1420 | if (nancount == 2) |
---|
1421 | { |
---|
1422 | nancount = 3; |
---|
1423 | goto fok; |
---|
1424 | } |
---|
1425 | if (infcount == 1 || infcount == 4) |
---|
1426 | { |
---|
1427 | infcount++; |
---|
1428 | goto fok; |
---|
1429 | } |
---|
1430 | break; |
---|
1431 | case L'a': |
---|
1432 | case L'A': |
---|
1433 | if (nancount == 1) |
---|
1434 | { |
---|
1435 | nancount = 2; |
---|
1436 | goto fok; |
---|
1437 | } |
---|
1438 | break; |
---|
1439 | case L'i': |
---|
1440 | if (infcount == 0 && zeroes == 0 |
---|
1441 | && (flags & (NDIGITS | DPTOK | EXPOK)) == |
---|
1442 | (NDIGITS | DPTOK | EXPOK)) |
---|
1443 | { |
---|
1444 | flags &= ~(SIGNOK | DPTOK | EXPOK | NDIGITS); |
---|
1445 | infcount = 1; |
---|
1446 | goto fok; |
---|
1447 | } |
---|
1448 | if (infcount == 3 || infcount == 5) |
---|
1449 | { |
---|
1450 | infcount++; |
---|
1451 | goto fok; |
---|
1452 | } |
---|
1453 | break; |
---|
1454 | case L'f': |
---|
1455 | case L'F': |
---|
1456 | if (infcount == 2) |
---|
1457 | { |
---|
1458 | infcount = 3; |
---|
1459 | goto fok; |
---|
1460 | } |
---|
1461 | break; |
---|
1462 | case L't': |
---|
1463 | case L'T': |
---|
1464 | if (infcount == 6) |
---|
1465 | { |
---|
1466 | infcount = 7; |
---|
1467 | goto fok; |
---|
1468 | } |
---|
1469 | break; |
---|
1470 | case L'y': |
---|
1471 | case L'Y': |
---|
1472 | if (infcount == 7) |
---|
1473 | { |
---|
1474 | infcount = 8; |
---|
1475 | goto fok; |
---|
1476 | } |
---|
1477 | break; |
---|
1478 | case L'e': |
---|
1479 | case L'E': |
---|
1480 | /* no exponent without some digits */ |
---|
1481 | if ((flags & (NDIGITS | EXPOK)) == EXPOK |
---|
1482 | || ((flags & EXPOK) && zeroes)) |
---|
1483 | { |
---|
1484 | if (! (flags & DPTOK)) |
---|
1485 | { |
---|
1486 | exp_adjust = zeroes - leading_zeroes; |
---|
1487 | exp_start = p; |
---|
1488 | } |
---|
1489 | flags = |
---|
1490 | (flags & ~(EXPOK | DPTOK)) | |
---|
1491 | SIGNOK | NDIGITS; |
---|
1492 | zeroes = 0; |
---|
1493 | goto fok; |
---|
1494 | } |
---|
1495 | break; |
---|
1496 | default: |
---|
1497 | if ((wchar_t) c == decpt && (flags & DPTOK)) |
---|
1498 | { |
---|
1499 | flags &= ~(SIGNOK | DPTOK); |
---|
1500 | leading_zeroes = zeroes; |
---|
1501 | goto fok; |
---|
1502 | } |
---|
1503 | break; |
---|
1504 | } |
---|
1505 | if (c != WEOF) |
---|
1506 | _ungetwc_r (rptr, c, fp); |
---|
1507 | break; |
---|
1508 | fok: |
---|
1509 | *p++ = c; |
---|
1510 | fskip: |
---|
1511 | width--; |
---|
1512 | ++nread; |
---|
1513 | } |
---|
1514 | if (zeroes) |
---|
1515 | flags &= ~NDIGITS; |
---|
1516 | /* We may have a 'N' or possibly even [sign] 'N' 'a' as the |
---|
1517 | start of 'NaN', only to run out of chars before it was |
---|
1518 | complete (or having encountered a non-matching char). So |
---|
1519 | check here if we have an outstanding nancount, and if so |
---|
1520 | put back the chars we did swallow and treat as a failed |
---|
1521 | match. |
---|
1522 | |
---|
1523 | FIXME - we still don't handle NAN([0xdigits]). */ |
---|
1524 | if (nancount - 1U < 2U) /* nancount && nancount < 3 */ |
---|
1525 | { |
---|
1526 | /* Newlib's ungetc works even if we called __srefill in |
---|
1527 | the middle of a partial parse, but POSIX does not |
---|
1528 | guarantee that in all implementations of ungetc. */ |
---|
1529 | while (p > buf) |
---|
1530 | { |
---|
1531 | _ungetwc_r (rptr, *--p, fp); /* [-+nNaA] */ |
---|
1532 | --nread; |
---|
1533 | } |
---|
1534 | goto match_failure; |
---|
1535 | } |
---|
1536 | /* Likewise for 'inf' and 'infinity'. But be careful that |
---|
1537 | 'infinite' consumes only 3 characters, leaving the stream |
---|
1538 | at the second 'i'. */ |
---|
1539 | if (infcount - 1U < 7U) /* infcount && infcount < 8 */ |
---|
1540 | { |
---|
1541 | if (infcount >= 3) /* valid 'inf', but short of 'infinity' */ |
---|
1542 | while (infcount-- > 3) |
---|
1543 | { |
---|
1544 | _ungetwc_r (rptr, *--p, fp); /* [iInNtT] */ |
---|
1545 | --nread; |
---|
1546 | } |
---|
1547 | else |
---|
1548 | { |
---|
1549 | while (p > buf) |
---|
1550 | { |
---|
1551 | _ungetwc_r (rptr, *--p, fp); /* [-+iInN] */ |
---|
1552 | --nread; |
---|
1553 | } |
---|
1554 | goto match_failure; |
---|
1555 | } |
---|
1556 | } |
---|
1557 | /* |
---|
1558 | * If no digits, might be missing exponent digits |
---|
1559 | * (just give back the exponent) or might be missing |
---|
1560 | * regular digits, but had sign and/or decimal point. |
---|
1561 | */ |
---|
1562 | if (flags & NDIGITS) |
---|
1563 | { |
---|
1564 | if (flags & EXPOK) |
---|
1565 | { |
---|
1566 | /* no digits at all */ |
---|
1567 | while (p > buf) |
---|
1568 | { |
---|
1569 | _ungetwc_r (rptr, *--p, fp); /* [-+.] */ |
---|
1570 | --nread; |
---|
1571 | } |
---|
1572 | goto match_failure; |
---|
1573 | } |
---|
1574 | /* just a bad exponent (e and maybe sign) */ |
---|
1575 | c = *--p; |
---|
1576 | --nread; |
---|
1577 | if (c != L'e' && c != L'E') |
---|
1578 | { |
---|
1579 | _ungetwc_r (rptr, c, fp); /* [-+] */ |
---|
1580 | c = *--p; |
---|
1581 | --nread; |
---|
1582 | } |
---|
1583 | _ungetwc_r (rptr, c, fp); /* [eE] */ |
---|
1584 | } |
---|
1585 | if ((flags & SUPPRESS) == 0) |
---|
1586 | { |
---|
1587 | double res = 0; |
---|
1588 | #ifdef _NO_LONGDBL |
---|
1589 | #define QUAD_RES res; |
---|
1590 | #else /* !_NO_LONG_DBL */ |
---|
1591 | long double qres = 0; |
---|
1592 | #define QUAD_RES qres; |
---|
1593 | #endif /* !_NO_LONG_DBL */ |
---|
1594 | long new_exp = 0; |
---|
1595 | |
---|
1596 | *p = 0; |
---|
1597 | if ((flags & (DPTOK | EXPOK)) == EXPOK) |
---|
1598 | { |
---|
1599 | exp_adjust = zeroes - leading_zeroes; |
---|
1600 | new_exp = -exp_adjust; |
---|
1601 | exp_start = p; |
---|
1602 | } |
---|
1603 | else if (exp_adjust) |
---|
1604 | new_exp = _wcstol_r (rptr, (exp_start + 1), NULL, 10) - exp_adjust; |
---|
1605 | if (exp_adjust) |
---|
1606 | { |
---|
1607 | |
---|
1608 | /* If there might not be enough space for the new exponent, |
---|
1609 | truncate some trailing digits to make room. */ |
---|
1610 | if (exp_start >= buf + sizeof (buf) / sizeof (*buf) |
---|
1611 | - MAX_LONG_LEN) |
---|
1612 | exp_start = buf + sizeof (buf) / sizeof (*buf) |
---|
1613 | - MAX_LONG_LEN - 1; |
---|
1614 | swprintf (exp_start, MAX_LONG_LEN, L"e%ld", new_exp); |
---|
1615 | } |
---|
1616 | |
---|
1617 | /* FIXME: We don't have wcstold yet. */ |
---|
1618 | #if 0//ndef _NO_LONGDBL /* !_NO_LONGDBL */ |
---|
1619 | if (flags & LONGDBL) |
---|
1620 | qres = _wcstold_r (rptr, buf, NULL); |
---|
1621 | else |
---|
1622 | #endif |
---|
1623 | res = _wcstod_r (rptr, buf, NULL); |
---|
1624 | |
---|
1625 | if (flags & LONG) |
---|
1626 | { |
---|
1627 | dp = GET_ARG (N, ap, double *); |
---|
1628 | *dp = res; |
---|
1629 | } |
---|
1630 | else if (flags & LONGDBL) |
---|
1631 | { |
---|
1632 | ldp = GET_ARG (N, ap, _LONG_DOUBLE *); |
---|
1633 | *ldp = QUAD_RES; |
---|
1634 | } |
---|
1635 | else |
---|
1636 | { |
---|
1637 | flp = GET_ARG (N, ap, float *); |
---|
1638 | if (isnan (res)) |
---|
1639 | *flp = nanf (NULL); |
---|
1640 | else |
---|
1641 | *flp = res; |
---|
1642 | } |
---|
1643 | nassigned++; |
---|
1644 | } |
---|
1645 | break; |
---|
1646 | } |
---|
1647 | #endif /* FLOATING_POINT */ |
---|
1648 | } |
---|
1649 | } |
---|
1650 | input_failure: |
---|
1651 | /* On read failure, return EOF failure regardless of matches; errno |
---|
1652 | should have been set prior to here. On EOF failure (including |
---|
1653 | invalid format string), return EOF if no matches yet, else number |
---|
1654 | of matches made prior to failure. */ |
---|
1655 | nassigned = nassigned && !(fp->_flags & __SERR) ? nassigned : EOF; |
---|
1656 | match_failure: |
---|
1657 | all_done: |
---|
1658 | /* Return number of matches, which can be 0 on match failure. */ |
---|
1659 | _newlib_flockfile_end (fp); |
---|
1660 | #ifdef _WANT_IO_POSIX_EXTENSIONS |
---|
1661 | free_m_ptr (); |
---|
1662 | #endif |
---|
1663 | return nassigned; |
---|
1664 | } |
---|
1665 | |
---|
1666 | #ifndef _NO_POS_ARGS |
---|
1667 | /* Process all intermediate arguments. Fortunately, with wscanf, all |
---|
1668 | intermediate arguments are sizeof(void*), so we don't need to scan |
---|
1669 | ahead in the format string. */ |
---|
1670 | static void * |
---|
1671 | get_arg (int n, va_list *ap, int *numargs_p, void **args) |
---|
1672 | { |
---|
1673 | int numargs = *numargs_p; |
---|
1674 | while (n >= numargs) |
---|
1675 | args[numargs++] = va_arg (*ap, void *); |
---|
1676 | *numargs_p = numargs; |
---|
1677 | return args[n]; |
---|
1678 | } |
---|
1679 | #endif /* !_NO_POS_ARGS */ |
---|