ReactOS  0.4.14-dev-599-g2d4d3f5
scanf.h
Go to the documentation of this file.
1 /*
2  * general implementation of scanf used by scanf, sscanf, fscanf,
3  * _cscanf, wscanf, swscanf and fwscanf
4  *
5  * Copyright 1996,1998 Marcus Meissner
6  * Copyright 1996 Jukka Iivonen
7  * Copyright 1997,2000, 2003 Uwe Bonnes
8  * Copyright 2000 Jon Griffiths
9  * Copyright 2002 Daniel Gudbjartsson
10  *
11  * This library is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * This library is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with this library; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24  */
25 
26 #ifdef WIDE_SCANF
27 #define _CHAR_ wchar_t
28 #define _EOF_ WEOF
29 #define _EOF_RET (short)WEOF
30 #define _ISSPACE_(c) iswspace(c)
31 #define _ISDIGIT_(c) iswdigit(c)
32 #define _WIDE2SUPPORTED_(c) c /* No conversion needed (wide to wide) */
33 #define _CHAR2SUPPORTED_(c) c /* FIXME: convert char to wide char */
34 #define _CHAR2DIGIT_(c, base) wchar2digit((c), (base))
35 #define _BITMAPSIZE_ 256*256
36 #else /* WIDE_SCANF */
37 #define _CHAR_ char
38 #define _EOF_ EOF
39 #define _EOF_RET EOF
40 #define _ISSPACE_(c) isspace(c)
41 #define _ISDIGIT_(c) isdigit(c)
42 #define _WIDE2SUPPORTED_(c) c /* FIXME: convert wide char to char */
43 #define _CHAR2SUPPORTED_(c) c /* No conversion needed (char to char) */
44 #define _CHAR2DIGIT_(c, base) char2digit((c), (base))
45 #define _BITMAPSIZE_ 256
46 #endif /* WIDE_SCANF */
47 
48 #ifdef CONSOLE
49 #define _GETC_(file) (consumed++, _getch())
50 #define _UNGETC_(nch, file) do { _ungetch(nch); consumed--; } while(0)
51 #define _LOCK_FILE_(file) _lock_file(stdin)
52 #define _UNLOCK_FILE_(file) _unlock_file(stdin)
53 #ifdef WIDE_SCANF
54 #ifdef SECURE
55 #define _FUNCTION_ static int vcwscanf_s_l(const char *format, _locale_t locale, __ms_va_list ap)
56 #else /* SECURE */
57 #define _FUNCTION_ static int vcwscanf_l(const char *format, _locale_t locale, __ms_va_list ap)
58 #endif /* SECURE */
59 #else /* WIDE_SCANF */
60 #ifdef SECURE
61 #define _FUNCTION_ static int vcscanf_s_l(const char *format, _locale_t locale, __ms_va_list ap)
62 #else /* SECURE */
63 #define _FUNCTION_ static int vcscanf_l(const char *format, _locale_t locale, __ms_va_list ap)
64 #endif /* SECURE */
65 #endif /* WIDE_SCANF */
66 #else
67 #ifdef STRING
68 #undef _EOF_
69 #define _EOF_ 0
70 #ifdef STRING_LEN
71 #define _GETC_(file) (consumed==length ? '\0' : (consumed++, *file++))
72 #define _UNGETC_(nch, file) do { file--; consumed--; } while(0)
73 #define _LOCK_FILE_(file) do {} while(0)
74 #define _UNLOCK_FILE_(file) do {} while(0)
75 #ifdef WIDE_SCANF
76 #ifdef SECURE
77 #define _FUNCTION_ static int vsnwscanf_s_l(const wchar_t *file, size_t length, const wchar_t *format, _locale_t locale, __ms_va_list ap)
78 #else /* SECURE */
79 #define _FUNCTION_ static int vsnwscanf_l(const wchar_t *file, size_t length, const wchar_t *format, _locale_t locale, __ms_va_list ap)
80 #endif /* SECURE */
81 #else /* WIDE_SCANF */
82 #ifdef SECURE
83 #define _FUNCTION_ static int vsnscanf_s_l(const char *file, size_t length, const char *format, _locale_t locale, __ms_va_list ap)
84 #else /* SECURE */
85 #define _FUNCTION_ static int vsnscanf_l(const char *file, size_t length, const char *format, _locale_t locale, __ms_va_list ap)
86 #endif /* SECURE */
87 #endif /* WIDE_SCANF */
88 #else /* STRING_LEN */
89 #define _GETC_(file) (consumed++, *file++)
90 #define _UNGETC_(nch, file) do { file--; consumed--; } while(0)
91 #define _LOCK_FILE_(file) do {} while(0)
92 #define _UNLOCK_FILE_(file) do {} while(0)
93 #ifdef WIDE_SCANF
94 #ifdef SECURE
95 #define _FUNCTION_ static int vswscanf_s_l(const wchar_t *file, const wchar_t *format, _locale_t locale, __ms_va_list ap)
96 #else /* SECURE */
97 #define _FUNCTION_ static int vswscanf_l(const wchar_t *file, const wchar_t *format, _locale_t locale, __ms_va_list ap)
98 #endif /* SECURE */
99 #else /* WIDE_SCANF */
100 #ifdef SECURE
101 #define _FUNCTION_ static int vsscanf_s_l(const char *file, const char *format, _locale_t locale, __ms_va_list ap)
102 #else /* SECURE */
103 #define _FUNCTION_ static int vsscanf_l(const char *file, const char *format, _locale_t locale, __ms_va_list ap)
104 #endif /* SECURE */
105 #endif /* WIDE_SCANF */
106 #endif /* STRING_LEN */
107 #else /* STRING */
108 #ifdef WIDE_SCANF
109 #define _GETC_(file) (consumed++, fgetwc(file))
110 #define _UNGETC_(nch, file) do { ungetwc(nch, file); consumed--; } while(0)
111 #define _LOCK_FILE_(file) _lock_file(file)
112 #define _UNLOCK_FILE_(file) _unlock_file(file)
113 #ifdef SECURE
114 #define _FUNCTION_ static int vfwscanf_s_l(FILE* file, const wchar_t *format, _locale_t locale, __ms_va_list ap)
115 #else /* SECURE */
116 #define _FUNCTION_ static int vfwscanf_l(FILE* file, const wchar_t *format, _locale_t locale, __ms_va_list ap)
117 #endif /* SECURE */
118 #else /* WIDE_SCANF */
119 #define _GETC_(file) (consumed++, fgetc(file))
120 #define _UNGETC_(nch, file) do { ungetc(nch, file); consumed--; } while(0)
121 #define _LOCK_FILE_(file) _lock_file(file)
122 #define _UNLOCK_FILE_(file) _unlock_file(file)
123 #ifdef SECURE
124 #define _FUNCTION_ static int vfscanf_s_l(FILE* file, const char *format, _locale_t locale, __ms_va_list ap)
125 #else /* SECURE */
126 #define _FUNCTION_ static int vfscanf_l(FILE* file, const char *format, _locale_t locale, __ms_va_list ap)
127 #endif /* SECURE */
128 #endif /* WIDE_SCANF */
129 #endif /* STRING */
130 #endif /* CONSOLE */
131 
134  int rd = 0, consumed = 0;
135  int nch;
136  if (!*format) return 0;
137 #ifndef WIDE_SCANF
138 #ifdef CONSOLE
139  TRACE("(%s):\n", debugstr_a(format));
140 #else /* CONSOLE */
141 #ifdef STRING
142  TRACE("%s (%s)\n", debugstr_a(file), debugstr_a(format));
143 #else /* STRING */
144  TRACE("%p (%s)\n", file, debugstr_a(format));
145 #endif /* STRING */
146 #endif /* CONSOLE */
147 #endif /* WIDE_SCANF */
148  _LOCK_FILE_(file);
149 
150  nch = _GETC_(file);
151  if (nch == _EOF_) {
153  return _EOF_RET;
154  }
155 
156  if(!locale)
157  locinfo = get_locinfo();
158  else
159  locinfo = locale->locinfo;
160 
161  while (*format) {
162  /* a whitespace character in the format string causes scanf to read,
163  * but not store, all consecutive white-space characters in the input
164  * up to the next non-white-space character. One white space character
165  * in the input matches any number (including zero) and combination of
166  * white-space characters in the input. */
167  if (_ISSPACE_(*format)) {
168  /* skip whitespace */
169  while ((nch!=_EOF_) && _ISSPACE_(nch))
170  nch = _GETC_(file);
171  }
172  /* a format specification causes scanf to read and convert characters
173  * in the input into values of a specified type. The value is assigned
174  * to an argument in the argument list. Format specifications have
175  * the form %[*][width][{h | l | I64 | L}]type */
176  else if (*format == '%') {
177  int st = 0; int suppress = 0; int width = 0;
178  int base;
179  int h_prefix = 0;
180  int l_prefix = 0;
181  int L_prefix = 0;
182  int w_prefix = 0;
183  int prefix_finished = 0;
184  int I64_prefix = 0;
185  format++;
186  /* look for leading asterisk, which means 'suppress assignment of
187  * this field'. */
188  if (*format=='*') {
189  format++;
190  suppress=1;
191  }
192  /* look for width specification */
193  while (_ISDIGIT_(*format)) {
194  width*=10;
195  width+=*format++ - '0';
196  }
197  if (width==0) width=-1; /* no width spec seen */
198  /* read prefix (if any) */
199  while (!prefix_finished) {
200  switch(*format) {
201  case 'h': h_prefix++; break;
202  case 'l':
203  if(*(format+1) == 'l') {
204  I64_prefix = 1;
205  format++;
206  }
207  l_prefix = 1;
208  break;
209  case 'w': w_prefix = 1; break;
210  case 'L': L_prefix = 1; break;
211  case 'I':
212  if (*(format + 1) == '6' &&
213  *(format + 2) == '4') {
214  I64_prefix = 1;
215  format += 2;
216  }
217  break;
218  default:
219  prefix_finished = 1;
220  }
221  if (!prefix_finished) format++;
222  }
223  /* read type */
224  switch(*format) {
225  case 'p':
226  case 'P': /* pointer. */
227  if (sizeof(void *) == sizeof(LONGLONG)) I64_prefix = 1;
228  /* fall through */
229  case 'x':
230  case 'X': /* hexadecimal integer. */
231  base = 16;
232  goto number;
233  case 'o': /* octal integer */
234  base = 8;
235  goto number;
236  case 'u': /* unsigned decimal integer */
237  base = 10;
238  goto number;
239  case 'd': /* signed decimal integer */
240  base = 10;
241  goto number;
242  case 'i': /* generic integer */
243  base = 0;
244  number: {
245  /* read an integer */
246  ULONGLONG cur = 0;
247  int negative = 0;
248  int seendigit=0;
249  /* skip initial whitespace */
250  while ((nch!=_EOF_) && _ISSPACE_(nch))
251  nch = _GETC_(file);
252  /* get sign */
253  if (nch == '-' || nch == '+') {
254  negative = (nch=='-');
255  nch = _GETC_(file);
256  if (width>0) width--;
257  }
258  /* look for leading indication of base */
259  if (width!=0 && nch == '0' && *format != 'p' && *format != 'P') {
260  nch = _GETC_(file);
261  if (width>0) width--;
262  seendigit=1;
263  if (width!=0 && (nch=='x' || nch=='X')) {
264  if (base==0)
265  base=16;
266  if (base==16) {
267  nch = _GETC_(file);
268  if (width>0) width--;
269  seendigit=0;
270  }
271  } else if (base==0)
272  base = 8;
273  }
274  /* format %i without indication of base */
275  if (base==0)
276  base = 10;
277  /* throw away leading zeros */
278  while (width!=0 && nch=='0') {
279  nch = _GETC_(file);
280  if (width>0) width--;
281  seendigit=1;
282  }
283  if (width!=0 && _CHAR2DIGIT_(nch, base)!=-1) {
284  cur = _CHAR2DIGIT_(nch, base);
285  nch = _GETC_(file);
286  if (width>0) width--;
287  seendigit=1;
288  }
289  /* read until no more digits */
290  while (width!=0 && (nch!=_EOF_) && _CHAR2DIGIT_(nch, base)!=-1) {
291  cur = cur*base + _CHAR2DIGIT_(nch, base);
292  nch = _GETC_(file);
293  if (width>0) width--;
294  seendigit=1;
295  }
296  /* okay, done! */
297  if (!seendigit) break; /* not a valid number */
298  st = 1;
299  if (!suppress) {
300 #define _SET_NUMBER_(type) *va_arg(ap, type*) = negative ? -(LONGLONG)cur : cur
301  if (I64_prefix) _SET_NUMBER_(LONGLONG);
302  else if (l_prefix) _SET_NUMBER_(LONG);
303  else if (h_prefix == 1) _SET_NUMBER_(short int);
304  else _SET_NUMBER_(int);
305  }
306  }
307  break;
308  case 'e':
309  case 'E':
310  case 'f':
311  case 'g':
312  case 'G': { /* read a float */
313  //long double cur = 1, expcnt = 10;
314  ULONGLONG d, hlp;
315  int exp = 0, negative = 0;
316  //unsigned fpcontrol;
317  //BOOL negexp;
318 
319  /* skip initial whitespace */
320  while ((nch!=_EOF_) && _ISSPACE_(nch))
321  nch = _GETC_(file);
322 
323  /* get sign. */
324  if (nch == '-' || nch == '+') {
325  negative = (nch=='-');
326  if (width>0) width--;
327  if (width==0) break;
328  nch = _GETC_(file);
329  }
330 
331  /* get first digit. */
332  if (*locinfo->lconv->decimal_point != nch) {
333  if (!_ISDIGIT_(nch)) break;
334  d = nch - '0';
335  nch = _GETC_(file);
336  if (width>0) width--;
337  /* read until no more digits */
338  while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
339  hlp = d*10 + nch - '0';
340  nch = _GETC_(file);
341  if (width>0) width--;
342  if(d > (ULONGLONG)-1/10 || hlp<d) {
343  exp++;
344  break;
345  }
346  else
347  d = hlp;
348  }
349  while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
350  exp++;
351  nch = _GETC_(file);
352  if (width>0) width--;
353  }
354  } else {
355  d = 0; /* Fix: .8 -> 0.8 */
356  }
357 
358  /* handle decimals */
359  if (width!=0 && nch == *locinfo->lconv->decimal_point) {
360  nch = _GETC_(file);
361  if (width>0) width--;
362 
363  while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
364  hlp = d*10 + nch - '0';
365  nch = _GETC_(file);
366  if (width>0) width--;
367  if(d > (ULONGLONG)-1/10 || hlp<d)
368  break;
369 
370  d = hlp;
371  exp--;
372  }
373  while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
374  nch = _GETC_(file);
375  if (width>0) width--;
376  }
377  }
378 
379  /* handle exponent */
380  if (width!=0 && (nch == 'e' || nch == 'E')) {
381  int sign = 1, e = 0;
382 
383  nch = _GETC_(file);
384  if (width>0) width--;
385  if (width!=0 && (nch=='+' || nch=='-')) {
386  if(nch == '-')
387  sign = -1;
388  nch = _GETC_(file);
389  if (width>0) width--;
390  }
391 
392  /* exponent digits */
393  while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
394  if(e > INT_MAX/10 || (e = e*10 + nch - '0')<0)
395  e = INT_MAX;
396  nch = _GETC_(file);
397  if (width>0) width--;
398  }
399  e *= sign;
400 
401  if(exp<0 && e<0 && e+exp>0) exp = INT_MIN;
402  else if(exp>0 && e>0 && e+exp<0) exp = INT_MAX;
403  else exp += e;
404  }
405 
406 #ifdef __REACTOS__
407  /* ReactOS: don't inline float processing (kernel/freeldr don't like that! */
408  _internal_handle_float(negative, exp, suppress, d, l_prefix || L_prefix, &ap);
409  st = 1;
410 #else
411 #ifdef _M_ARM
412  DbgBreakPoint();
413 #else
414  fpcontrol = _control87(0, 0);
417 #endif
418  negexp = (exp < 0);
419  if(negexp)
420  exp = -exp;
421  /* update 'cur' with this exponent. */
422  while(exp) {
423  if(exp & 1)
424  cur *= expcnt;
425  exp /= 2;
426  expcnt = expcnt*expcnt;
427  }
428  cur = (negexp ? d/cur : d*cur);
429 #ifdef _M_ARM
430  DbgBreakPoint();
431 #else
432  _control87(fpcontrol, 0xffffffff);
433 #endif
434  st = 1;
435  if (!suppress) {
436  if (L_prefix) _SET_NUMBER_(double);
437  else if (l_prefix) _SET_NUMBER_(double);
438  else _SET_NUMBER_(float);
439  }
440 #endif /* __REACTOS__ */
441  }
442  break;
443  /* According to msdn,
444  * 's' reads a character string in a call to fscanf
445  * and 'S' a wide character string and vice versa in a
446  * call to fwscanf. The 'h', 'w' and 'l' prefixes override
447  * this behaviour. 'h' forces reading char * but 'l' and 'w'
448  * force reading WCHAR. */
449  case 's':
450  if (w_prefix || l_prefix) goto widecharstring;
451  else if (h_prefix) goto charstring;
452 #ifdef WIDE_SCANF
453  else goto widecharstring;
454 #else /* WIDE_SCANF */
455  else goto charstring;
456 #endif /* WIDE_SCANF */
457  case 'S':
458  if (w_prefix || l_prefix) goto widecharstring;
459  else if (h_prefix) goto charstring;
460 #ifdef WIDE_SCANF
461  else goto charstring;
462 #else /* WIDE_SCANF */
463  else goto widecharstring;
464 #endif /* WIDE_SCANF */
465  charstring: { /* read a word into a char */
466  char *sptr = suppress ? NULL : va_arg(ap, char*);
467  char *sptr_beg = sptr;
468 #ifdef SECURE
469  unsigned size = suppress ? UINT_MAX : va_arg(ap, unsigned);
470 #else
471  unsigned size = UINT_MAX;
472 #endif
473  /* skip initial whitespace */
474  while ((nch!=_EOF_) && _ISSPACE_(nch))
475  nch = _GETC_(file);
476  /* read until whitespace */
477  while (width!=0 && (nch!=_EOF_) && !_ISSPACE_(nch)) {
478  if (!suppress) {
479  *sptr++ = _CHAR2SUPPORTED_(nch);
480  if(size>1) size--;
481  else {
483  *sptr_beg = 0;
484  return rd;
485  }
486  }
487  st++;
488  nch = _GETC_(file);
489  if (width>0) width--;
490  }
491  /* terminate */
492  if (st && !suppress) *sptr = 0;
493  }
494  break;
495  widecharstring: { /* read a word into a wchar_t* */
496  wchar_t *sptr = suppress ? NULL : va_arg(ap, wchar_t*);
497  wchar_t *sptr_beg = sptr;
498 #ifdef SECURE
499  unsigned size = suppress ? UINT_MAX : va_arg(ap, unsigned);
500 #else
501  unsigned size = UINT_MAX;
502 #endif
503  /* skip initial whitespace */
504  while ((nch!=_EOF_) && _ISSPACE_(nch))
505  nch = _GETC_(file);
506  /* read until whitespace */
507  while (width!=0 && (nch!=_EOF_) && !_ISSPACE_(nch)) {
508  if (!suppress) {
509  *sptr++ = _WIDE2SUPPORTED_(nch);
510  if(size>1) size--;
511  else {
513  *sptr_beg = 0;
514  return rd;
515  }
516  }
517  st++;
518  nch = _GETC_(file);
519  if (width>0) width--;
520  }
521  /* terminate */
522  if (st && !suppress) *sptr = 0;
523  }
524  break;
525  /* 'c' and 'C work analogously to 's' and 'S' as described
526  * above */
527  case 'c':
528  if (w_prefix || l_prefix) goto widecharacter;
529  else if (h_prefix) goto character;
530 #ifdef WIDE_SCANF
531  else goto widecharacter;
532 #else /* WIDE_SCANF */
533  else goto character;
534 #endif /* WIDE_SCANF */
535  case 'C':
536  if (w_prefix || l_prefix) goto widecharacter;
537  else if (h_prefix) goto character;
538 #ifdef WIDE_SCANF
539  else goto character;
540 #else /* WIDE_SCANF */
541  else goto widecharacter;
542 #endif /* WIDE_SCANF */
543  character: { /* read single character into char */
544  char *str = suppress ? NULL : va_arg(ap, char*);
545  char *pstr = str;
546 #ifdef SECURE
547  unsigned size = suppress ? UINT_MAX : va_arg(ap, unsigned)/sizeof(char);
548 #else
549  unsigned size = UINT_MAX;
550 #endif
551  if (width == -1) width = 1;
552  while (width && (nch != _EOF_))
553  {
554  if (!suppress) {
555  *str++ = _CHAR2SUPPORTED_(nch);
556  if(size) size--;
557  else {
559  *pstr = 0;
560  return rd;
561  }
562  }
563  st++;
564  width--;
565  nch = _GETC_(file);
566  }
567  }
568  break;
569  widecharacter: { /* read single character into a wchar_t */
570  wchar_t *str = suppress ? NULL : va_arg(ap, wchar_t*);
571  wchar_t *pstr = str;
572 #ifdef SECURE
573  unsigned size = suppress ? UINT_MAX : va_arg(ap, unsigned)/sizeof(wchar_t);
574 #else
575  unsigned size = UINT_MAX;
576 #endif
577  if (width == -1) width = 1;
578  while (width && (nch != _EOF_))
579  {
580  if (!suppress) {
581  *str++ = _WIDE2SUPPORTED_(nch);
582  if(size) size--;
583  else {
585  *pstr = 0;
586  return rd;
587  }
588  }
589  st++;
590  width--;
591  nch = _GETC_(file);
592  }
593  }
594  break;
595  case 'n': {
596  if (!suppress) {
597  int*n = va_arg(ap, int*);
598  *n = consumed - 1;
599  }
600  /* This is an odd one: according to the standard,
601  * "Execution of a %n directive does not increment the
602  * assignment count returned at the completion of
603  * execution" even if it wasn't suppressed with the
604  * '*' flag. The Corrigendum to the standard seems
605  * to contradict this (comment out the assignment to
606  * suppress below if you want to implement these
607  * alternate semantics) but the windows program I'm
608  * looking at expects the behavior I've coded here
609  * (which happens to be what glibc does as well).
610  */
611  suppress = 1;
612  st = 1;
613  }
614  break;
615  case '[': {
616  _CHAR_ *str = suppress ? NULL : va_arg(ap, _CHAR_*);
617  _CHAR_ *sptr = str;
618  RTL_BITMAP bitMask;
619  ULONG *Mask;
620  int invert = 0; /* Set if we are NOT to find the chars */
621 #ifdef SECURE
622  unsigned size = suppress ? UINT_MAX : va_arg(ap, unsigned)/sizeof(_CHAR_);
623 #else
624  unsigned size = UINT_MAX;
625 #endif
626 
627  /* Init our bitmap */
629  RtlInitializeBitMap(&bitMask, Mask, _BITMAPSIZE_);
630 
631  /* Read the format */
632  format++;
633  if(*format == '^') {
634  invert = 1;
635  format++;
636  }
637  if(*format == ']') {
638  RtlSetBits(&bitMask, ']', 1);
639  format++;
640  }
641  while(*format && (*format != ']')) {
642  /* According to msdn:
643  * "Note that %[a-z] and %[z-a] are interpreted as equivalent to %[abcde...z]." */
644  if((*format == '-') && (*(format + 1) != ']')) {
645  if ((*(format - 1)) < *(format + 1))
646  RtlSetBits(&bitMask, *(format - 1) +1 , *(format + 1) - *(format - 1));
647  else
648  RtlSetBits(&bitMask, *(format + 1) , *(format - 1) - *(format + 1));
649  format++;
650  } else
651  RtlSetBits(&bitMask, *format, 1);
652  format++;
653  }
654  /* read until char is not suitable */
655  while ((width != 0) && (nch != _EOF_)) {
656  if(!invert) {
657  if(RtlAreBitsSet(&bitMask, nch, 1)) {
658  if (!suppress) *sptr++ = _CHAR2SUPPORTED_(nch);
659  } else
660  break;
661  } else {
662  if(RtlAreBitsClear(&bitMask, nch, 1)) {
663  if (!suppress) *sptr++ = _CHAR2SUPPORTED_(nch);
664  } else
665  break;
666  }
667  st++;
668  nch = _GETC_(file);
669  if (width>0) width--;
670  if(size>1) size--;
671  else {
673  *str = 0;
674  return rd;
675  }
676  }
677  /* terminate */
678  if (!suppress) *sptr = 0;
679  HeapFree(GetProcessHeap(), 0, Mask);
680  }
681  break;
682  default:
683  /* From spec: "if a percent sign is followed by a character
684  * that has no meaning as a format-control character, that
685  * character and the following characters are treated as
686  * an ordinary sequence of characters, that is, a sequence
687  * of characters that must match the input. For example,
688  * to specify that a percent-sign character is to be input,
689  * use %%." */
690  while ((nch!=_EOF_) && _ISSPACE_(nch))
691  nch = _GETC_(file);
692  if (nch==*format) {
693  suppress = 1; /* whoops no field to be read */
694  st = 1; /* but we got what we expected */
695  nch = _GETC_(file);
696  }
697  break;
698  }
699  if (st && !suppress) rd++;
700  else if (!st) break;
701  }
702  /* a non-white-space character causes scanf to read, but not store,
703  * a matching non-white-space character. */
704  else {
705  /* check for character match */
706  if (nch == *format) {
707  nch = _GETC_(file);
708  } else break;
709  }
710  format++;
711  }
712  if (nch!=_EOF_) {
713  _UNGETC_(nch, file);
714  }
715 
716  TRACE("returning %d\n", rd);
718  return rd;
719 }
720 
721 #undef _CHAR_
722 #undef _EOF_
723 #undef _EOF_RET
724 #undef _ISSPACE_
725 #undef _ISDIGIT_
726 #undef _CHAR2SUPPORTED_
727 #undef _WIDE2SUPPORTED_
728 #undef _CHAR2DIGIT_
729 #undef _GETC_
730 #undef _UNGETC_
731 #undef _LOCK_FILE_
732 #undef _UNLOCK_FILE_
733 #undef _FUNCTION_
734 #undef _BITMAPSIZE_
static size_t double int int int * sign
Definition: printf.c:69
int rd
Definition: scanf.h:134
#define _SET_NUMBER_(type)
GLint GLint GLsizei width
Definition: gl.h:1546
boolean suppress
Definition: jpeglib.h:1005
NTSYSAPI void WINAPI RtlInitializeBitMap(PRTL_BITMAP, PULONG, ULONG)
#define INT_MAX
Definition: limits.h:40
#define _LOCK_FILE_(file)
Definition: scanf.h:121
NTSYSAPI BOOLEAN WINAPI RtlAreBitsClear(PCRTL_BITMAP, ULONG, ULONG)
#define _CHAR2SUPPORTED_(c)
Definition: scanf.h:43
GLdouble n
Definition: glext.h:7729
#define _UNLOCK_FILE_(file)
Definition: scanf.h:122
#define MSVCRT__EM_INEXACT
Definition: msvcrt.h:769
unsigned int __cdecl _control87(unsigned int, unsigned int)
Definition: cntrlfp.c:43
void DbgBreakPoint()
Definition: mach.c:553
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
#define _FUNCTION_
Definition: scanf.h:126
GLboolean invert
Definition: gl.h:1949
Definition: _locale.h:75
GLuint base
Definition: 3dtext.c:35
long LONG
Definition: pedump.c:60
#define e
Definition: ke_i.h:82
static size_t double number
Definition: printf.c:69
const WCHAR * str
smooth NULL
Definition: ftsmooth.c:416
unsigned char
Definition: typeof.h:29
TRACE("%p (%s)\n", file, debugstr_a(format))
#define get_locinfo()
Definition: winesup.h:25
#define _ISSPACE_(c)
Definition: scanf.h:40
int64_t LONGLONG
Definition: typedefs.h:66
#define _CHAR2DIGIT_(c, base)
Definition: scanf.h:44
GLsizeiptr size
Definition: glext.h:5919
#define _EOF_
Definition: scanf.h:38
#define GetProcessHeap()
Definition: compat.h:403
PVOID WINAPI HeapAlloc(HANDLE, DWORD, SIZE_T)
#define d
Definition: ke_i.h:81
#define debugstr_a
Definition: kernel32.h:31
uint64_t ULONGLONG
Definition: typedefs.h:65
#define MSVCRT__EM_OVERFLOW
Definition: msvcrt.h:767
else locinfo
Definition: scanf.h:159
#define MSVCRT__EM_ZERODIVIDE
Definition: msvcrt.h:766
#define _WIDE2SUPPORTED_(c)
Definition: scanf.h:42
#define _BITMAPSIZE_
Definition: scanf.h:45
#define INT_MIN
Definition: limits.h:39
#define UINT_MAX
Definition: limits.h:41
#define va_arg(ap, T)
Definition: acmsvcex.h:89
NTSYSAPI BOOLEAN WINAPI RtlAreBitsSet(PCRTL_BITMAP, ULONG, ULONG)
#define MSVCRT__EM_DENORMAL
Definition: msvcrt.h:765
int consumed
Definition: scanf.h:134
#define _GETC_(file)
Definition: scanf.h:119
#define _ISDIGIT_(c)
Definition: scanf.h:41
DWORD exp
Definition: msg.c:16038
#define HEAP_ZERO_MEMORY
Definition: compat.h:123
#define _CHAR_
Definition: scanf.h:37
int nch
Definition: scanf.h:135
void int int ULONGLONG int va_list * ap
Definition: winesup.h:32
#define MSVCRT__EM_UNDERFLOW
Definition: msvcrt.h:768
unsigned int ULONG
Definition: retypes.h:1
#define wchar_t
Definition: wchar.h:102
NTSYSAPI void WINAPI RtlSetBits(PRTL_BITMAP, ULONG, ULONG)
#define _EOF_RET
Definition: scanf.h:39
#define HeapFree(x, y, z)
Definition: compat.h:402
#define _UNGETC_(nch, file)
Definition: scanf.h:120
#define MSVCRT__EM_INVALID
Definition: msvcrt.h:764
Definition: fci.c:126