1 /* Copyright (C) 2002-2004 Manuel Novoa III
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Library General Public
5 * License as published by the Free Software Foundation; either
6 * version 2 of the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Library General Public License for more details.
13 * You should have received a copy of the GNU Library General Public
14 * License along with this library; if not, see
15 * <http://www.gnu.org/licenses/>.
19 * New *scanf implementation with lots of bug fixes and *wscanf support.
20 * Also now optionally supports hexadecimal float notation, positional
21 * args, and glibc locale-specific digit grouping. Should now be
22 * standards compliant.
25 * Bug fix: scanf %lc,%ls,%l[ would always set mb_fail on eof or error,
26 * even when just starting a new mb char.
27 * Bug fix: wscanf would incorrectly unget in certain situations.
30 * Bug fix: store flag wasn't respected if no positional args.
31 * Implement vs{n}scanf for the non-buffered stdio no-wchar case.
34 * Bug fix: Fix a problem reported by Atsushi Nemoto <anemo@mba.ocn.ne.jp>
35 * for environments where long and long long are the same.
38 * Ugh... EOF handling by scanf was completely broken. :-( Regretably,
39 * I got my mind fixed in one mode and didn't comply with the standards.
40 * Things should be fixed now, but comparision testing is difficult when
41 * glibc's scanf is broken and they stubbornly refuse to even acknowledge
42 * that it is... even when confronted by specific examples from the C99
43 * standards and from an official C standard defect report.
57 #ifdef __UCLIBC_HAS_WCHAR__
58 #include <bits/uClibc_uwchar.h>
61 #endif /* __UCLIBC_HAS_WCHAR__ */
69 #ifdef __UCLIBC_HAS_THREADS__
70 #include <stdio_ext.h>
72 #endif /* __UCLIBC_HAS_THREADS__ */
74 #ifdef __UCLIBC_HAS_FLOATS__
76 #include <bits/uClibc_fpmax.h>
77 #endif /* __UCLIBC_HAS_FLOATS__ */
79 #undef __STDIO_HAS_VSSCANF
80 #if defined(__STDIO_BUFFERS) || !defined(__UCLIBC_HAS_WCHAR__) || defined(__UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__)
81 #define __STDIO_HAS_VSSCANF 1
83 #if !defined(__STDIO_BUFFERS) && !defined(__UCLIBC_HAS_WCHAR__)
86 unsigned char *bufread; /* pointer to 1 past end of buffer */
87 unsigned char *bufpos;
93 #if defined(ULLONG_MAX) && (LLONG_MAX > LONG_MAX)
95 extern unsigned long long
96 _stdlib_strto_ll(register const char * __restrict str,
97 char ** __restrict endptr, int base, int sflag);
98 #if (ULLONG_MAX == UINTMAX_MAX)
99 #define STRTOUIM(s,e,b,sf) _stdlib_strto_ll(s,e,b,sf)
102 #else /* defined(ULLONG_MAX) && (LLONG_MAX > LONG_MAX) */
105 _stdlib_strto_l(register const char * __restrict str,
106 char ** __restrict endptr, int base, int sflag);
108 #if (ULONG_MAX == UINTMAX_MAX)
109 #define STRTOUIM(s,e,b,sf) _stdlib_strto_l(s,e,b,sf)
112 #endif /* defined(ULLONG_MAX) && (LLONG_MAX > LONG_MAX) */
115 #error STRTOUIM conversion function is undefined!
118 /**********************************************************************/
120 /* The standards require EOF < 0. */
122 #define __isdigit_char_or_EOF(C) __isdigit_char((C))
124 #define __isdigit_char_or_EOF(C) __isdigit_int((C))
127 /**********************************************************************/
130 int fscanf(FILE * __restrict stream, const char * __restrict format, ...)
135 va_start(arg, format);
136 rv = vfscanf(stream, format, arg);
141 libc_hidden_def(fscanf)
144 /**********************************************************************/
147 int scanf(const char * __restrict format, ...)
152 va_start(arg, format);
153 rv = vfscanf(stdin, format, arg);
160 /**********************************************************************/
163 #ifdef __STDIO_HAS_VSSCANF
165 int sscanf(const char * __restrict str, const char * __restrict format, ...)
170 va_start(arg, format);
171 rv = vsscanf(str, format, arg);
176 libc_hidden_def(sscanf)
178 #else /* __STDIO_HAS_VSSCANF */
179 #warning Skipping sscanf since no vsscanf!
180 #endif /* __STDIO_HAS_VSSCANF */
183 /**********************************************************************/
186 int vscanf(const char * __restrict format, va_list arg)
188 return vfscanf(stdin, format, arg);
192 /**********************************************************************/
195 #ifdef __UCLIBC_MJN3_ONLY__
196 #warning WISHLIST: Implement vsscanf for non-buf and no custom stream case.
197 #endif /* __UCLIBC_MJN3_ONLY__ */
199 #ifdef __STDIO_BUFFERS
201 int vsscanf(const char *sp, const char *fmt, va_list ap)
205 /* __STDIO_STREAM_RESET_GCS(&f); */
206 #ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
207 f.__cookie = &(f.__filedes);
209 f.__gcs.write = NULL;
211 f.__gcs.close = NULL;
214 f.__filedes = __STDIO_STREAM_FAKE_VSSCANF_FILEDES;
215 f.__modeflags = (__FLAG_NARROW|__FLAG_READONLY|__FLAG_READING);
217 #ifdef __UCLIBC_HAS_WCHAR__
218 f.__ungot_width[0] = 0;
220 #ifdef __STDIO_MBSTATE
221 __INIT_MBSTATE(&(f.__state));
224 #ifdef __UCLIBC_HAS_THREADS__
225 f.__user_locking = 1; /* Set user locking. */
226 STDIO_INIT_MUTEX(f.__lock);
230 /* Set these last since __bufgetc initialization depends on
231 * __user_locking and only gets set if user locking is on. */
233 f.__bufpos = (unsigned char *) ((void *) sp);
235 f.__bufend = f.__bufstart + strlen(sp);
236 __STDIO_STREAM_ENABLE_GETC(&f);
237 __STDIO_STREAM_DISABLE_PUTC(&f);
239 return vfscanf(&f, fmt, ap);
241 libc_hidden_def(vsscanf)
243 #elif !defined(__UCLIBC_HAS_WCHAR__)
245 int vsscanf(const char *sp, const char *fmt, va_list ap)
249 f.bufpos = (unsigned char *) ((void *) sp);
250 f.bufread = f.bufpos + strlen(sp);
252 /* __STDIO_STREAM_RESET_GCS(&f.f); */
253 #ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
254 f.f.__cookie = &(f.f.__filedes);
255 f.f.__gcs.read = NULL;
256 f.f.__gcs.write = NULL;
257 f.f.__gcs.seek = NULL;
258 f.f.__gcs.close = NULL;
261 f.f.__filedes = __STDIO_STREAM_FAKE_VSSCANF_FILEDES_NB;
262 f.f.__modeflags = (__FLAG_NARROW|__FLAG_READONLY|__FLAG_READING);
264 /* #ifdef __UCLIBC_HAS_WCHAR__ */
265 /* f.f.__ungot_width[0] = 0; */
267 #ifdef __STDIO_MBSTATE
268 #error __STDIO_MBSTATE is defined!
269 /* __INIT_MBSTATE(&(f.f.__state)); */
272 #ifdef __UCLIBC_HAS_THREADS__
273 f.f.__user_locking = 1; /* Set user locking. */
274 STDIO_INIT_MUTEX(f.f.__lock);
276 f.f.__nextopen = NULL;
278 return vfscanf(&f.f, fmt, ap);
280 libc_hidden_def(vsscanf)
282 #elif defined(__UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__)
284 int vsscanf(const char *sp, const char *fmt, va_list ap)
289 if ((f = fmemopen((char *)sp, strlen(sp), "r")) != NULL) {
290 rv = vfscanf(f, fmt, ap);
296 libc_hidden_def(vsscanf)
299 #warning Skipping vsscanf since no buffering, no custom streams, and wchar enabled!
300 #ifdef __STDIO_HAS_VSSCANF
301 #error WHOA! __STDIO_HAS_VSSCANF is defined!
306 /**********************************************************************/
309 int fwscanf(FILE * __restrict stream, const wchar_t * __restrict format, ...)
314 va_start(arg, format);
315 rv = vfwscanf(stream, format, arg);
322 /**********************************************************************/
325 int wscanf(const wchar_t * __restrict format, ...)
330 va_start(arg, format);
331 rv = vfwscanf(stdin, format, arg);
338 /**********************************************************************/
341 #ifdef __STDIO_BUFFERS
343 int swscanf(const wchar_t * __restrict str, const wchar_t * __restrict format,
349 va_start(arg, format);
350 rv = vswscanf(str, format, arg);
355 #else /* __STDIO_BUFFERS */
356 #warning Skipping swscanf since no buffering!
357 #endif /* __STDIO_BUFFERS */
360 /**********************************************************************/
363 int vwscanf(const wchar_t * __restrict format, va_list arg)
365 return vfwscanf(stdin, format, arg);
369 /**********************************************************************/
372 #ifdef __STDIO_BUFFERS
374 int vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict format,
380 f.__bufpos = (unsigned char *) str;
382 f.__bufend = (unsigned char *)(str + wcslen(str));
383 __STDIO_STREAM_DISABLE_GETC(&f);
384 __STDIO_STREAM_DISABLE_PUTC(&f);
386 /* __STDIO_STREAM_RESET_GCS(&f); */
387 #ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
388 f.__cookie = &(f.__filedes);
390 f.__gcs.write = NULL;
392 f.__gcs.close = NULL;
395 f.__filedes = __STDIO_STREAM_FAKE_VSWSCANF_FILEDES;
396 f.__modeflags = (__FLAG_WIDE|__FLAG_READONLY|__FLAG_READING);
398 #ifdef __UCLIBC_HAS_WCHAR__
399 f.__ungot_width[0] = 0;
400 #endif /* __UCLIBC_HAS_WCHAR__ */
401 #ifdef __STDIO_MBSTATE
402 __INIT_MBSTATE(&(f.__state));
403 #endif /* __STDIO_MBSTATE */
405 #ifdef __UCLIBC_HAS_THREADS__
406 f.__user_locking = 1; /* Set user locking. */
407 STDIO_INIT_MUTEX(f.__lock);
411 return vfwscanf(&f, format, arg);
413 libc_hidden_def(vswscanf)
414 #else /* __STDIO_BUFFERS */
415 #warning Skipping vswscanf since no buffering!
416 #endif /* __STDIO_BUFFERS */
419 /**********************************************************************/
420 /**********************************************************************/
424 /* float layout 0123456789012345678901 repeat n for "l[" */
425 #define SPEC_CHARS "npxXoudifFeEgGaACSnmcs["
426 /* npxXoudif eEgG CS cs[ */
427 /* NOTE: the 'm' flag must come before any convs that support it */
429 /* NOTE: Ordering is important! The CONV_{C,S,LEFTBRACKET} must map
430 simply to their lowercase equivalents. */
435 CONV_x, CONV_X, CONV_o, CONV_u, CONV_d, CONV_i,
436 CONV_f, CONV_F, CONV_e, CONV_E, CONV_g, CONV_G, CONV_a, CONV_A,
437 CONV_C, CONV_S, CONV_LEFTBRACKET, CONV_m, CONV_c, CONV_s, CONV_leftbracket,
438 CONV_percent, CONV_whitespace /* not in SPEC_* and no flags */
441 #ifdef __UCLIBC_HAS_FLOATS__
442 #ifdef __UCLIBC_HAS_HEXADECIMAL_FLOATS__
443 /* p x X o u d i f F e E g G a A */
444 #define SPEC_BASE { 16, 16, 16, 8, 10, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
446 /* p x X o u d i f F e E g G a A */
447 #define SPEC_BASE { 16, 16, 16, 8, 10, 10, 0, 10, 10, 10, 10, 10, 10, 10, 10 }
449 #else /* __UCLIBC_HAS_FLOATS__ */
450 /* p x X o u d i f F e E g G a A */
451 #define SPEC_BASE { 16, 16, 16, 8, 10, 10, 0 }
452 #endif /* __UCLIBC_HAS_FLOATS__ */
454 #ifdef __UCLIBC_MJN3_ONLY__
457 #warning CONSIDER: Add a '0' flag to eat 0 padding when grouping?
459 #endif /* __UCLIBC_MJN3_ONLY__ */
461 #define SPEC_FLAGS "*'I"
464 FLAG_SURPRESS = 0x10, /* MUST BE 1ST!! See DO_FLAGS. */
465 FLAG_THOUSANDS = 0x20,
466 FLAG_I18N = 0x40, /* only works for d, i, u */
467 FLAG_MALLOC = 0x80, /* only works for c, s, S, and [ (and l[)*/
471 #define SPEC_RANGES { CONV_n, CONV_p, CONV_i, CONV_A, \
472 CONV_C, CONV_LEFTBRACKET, \
473 CONV_c, CONV_leftbracket }
475 /* Note: We treat L and ll as synonymous... for ints and floats. */
477 #define SPEC_ALLOWED_FLAGS { \
478 /* n */ (0x0f|FLAG_SURPRESS), \
479 /* p */ ( 0|FLAG_SURPRESS), \
480 /* oxXudi */ (0x0f|FLAG_SURPRESS|FLAG_THOUSANDS|FLAG_I18N), \
481 /* fFeEgGaA */ (0x0c|FLAG_SURPRESS|FLAG_THOUSANDS|FLAG_I18N), \
482 /* C */ ( 0|FLAG_SURPRESS), \
483 /* S and l[ */ ( 0|FLAG_SURPRESS|FLAG_MALLOC), \
484 /* c */ (0x04|FLAG_SURPRESS|FLAG_MALLOC), \
485 /* s and [ */ (0x04|FLAG_SURPRESS|FLAG_MALLOC), \
489 /**********************************************************************/
491 * In order to ease translation to what arginfo and _print_info._flags expect,
492 * we map: 0:int 1:char 2:longlong 4:long 8:short
493 * and then _flags |= (((q << 7) + q) & 0x701) and argtype |= (_flags & 0x701)
496 /* TODO -- Fix the table below to take into account stdint.h. */
497 /* #ifndef LLONG_MAX */
498 /* #error fix QUAL_CHARS for no long long! Affects 'L', 'j', 'q', 'll'. */
500 /* #if LLONG_MAX != INTMAX_MAX */
501 /* #error fix QUAL_CHARS intmax_t entry 'j'! */
506 #error PDS already defined!
509 #error SS already defined!
512 #error IMS already defined!
515 #if PTRDIFF_MAX == INT_MAX
517 #elif PTRDIFF_MAX == LONG_MAX
519 #elif defined(LLONG_MAX) && (PTRDIFF_MAX == LLONG_MAX)
522 #error fix QUAL_CHARS ptrdiff_t entry 't'!
525 #if SIZE_MAX == UINT_MAX
527 #elif SIZE_MAX == ULONG_MAX
529 #elif defined(LLONG_MAX) && (SIZE_MAX == ULLONG_MAX)
532 #error fix QUAL_CHARS size_t entries 'z', 'Z'!
535 #if INTMAX_MAX == INT_MAX
537 #elif INTMAX_MAX == LONG_MAX
539 #elif defined(LLONG_MAX) && (INTMAX_MAX == LLONG_MAX)
542 #error fix QUAL_CHARS intmax_t entry 'j'!
545 #define QUAL_CHARS { \
546 /* j:(u)intmax_t z:(s)size_t t:ptrdiff_t \0:int q:long_long */ \
547 'h', 'l', 'L', 'j', 'z', 't', 'q', 0, \
548 2, 4, 8, IMS, SS, PDS, 8, 0, /* TODO -- fix!!! */ \
553 /**********************************************************************/
556 /* FIXME: "warning: the right operand of ">" changes sign when promoted" */
558 #error Unfortunately, we currently need wint_t to be able to store EOF. Sorry.
562 #define Wchar wchar_t
563 #define Wuchar __uwchar_t
564 #define ISSPACE(C) iswspace((C))
565 #define VFSCANF vfwscanf
566 #define GETC(SC) (SC)->sc_getc((SC))
568 typedef unsigned char __uchar_t;
572 #define Wuchar __uchar_t
573 #define ISSPACE(C) isspace((C))
574 #define VFSCANF vfscanf
575 #ifdef __UCLIBC_HAS_WCHAR__
576 #define GETC(SC) (SC)->sc_getc((SC))
577 #else /* __UCLIBC_HAS_WCHAR__ */
578 #define GETC(SC) getc_unlocked((SC)->fp)
579 #endif /* __UCLIBC_HAS_WCHAR__ */
589 #ifdef __UCLIBC_HAS_WCHAR__
590 wchar_t app_ungot; /* Match FILE struct member type. */
591 unsigned char ungot_wchar_width;
592 #else /* __UCLIBC_HAS_WCHAR__ */
593 unsigned char app_ungot; /* Match FILE struct member type. */
594 #endif /* __UCLIBC_HAS_WCHAR__ */
598 #ifdef __UCLIBC_HAS_WCHAR__
599 char ungot_wflag; /* vfwscanf */
600 char mb_fail; /* vfscanf */
601 mbstate_t mbstate; /* vfscanf */
603 wint_t ungot_wchar; /* to support __scan_getc */
604 int (*sc_getc)(struct scan_cookie *);
605 #endif /* __UCLIBC_HAS_WCHAR__ */
607 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
608 const char *grouping;
609 const unsigned char *thousands_sep;
611 #ifdef __UCLIBC_HAS_WCHAR__
612 wchar_t thousands_sep_wc;
613 #endif /* __UCLIBC_HAS_WCHAR__ */
614 #endif /* __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__ */
616 #ifdef __UCLIBC_HAS_FLOATS__
617 const unsigned char *decpt;
619 #ifdef __UCLIBC_HAS_WCHAR__
621 #endif /* __UCLIBC_HAS_WCHAR__ */
622 const unsigned char *fake_decpt;
623 #endif /* __UCLIBC_HAS_FLOATS__ */
628 #if defined(NL_ARGMAX) && (NL_ARGMAX > 0)
630 #warning NL_ARGMAX > 10, and space is allocated on the stack for positional args.
632 void *pos_args[NL_ARGMAX];
633 int num_pos_args; /* Must start at -1. */
635 #endif /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
637 const unsigned char *fmt;
638 int cnt, dataargtype, conv_num, max_width;
639 unsigned char store, flags;
640 } psfs_t; /* parse scanf format state */
643 /**********************************************************************/
644 /**********************************************************************/
646 extern void __init_scan_cookie(register struct scan_cookie *sc,
647 register FILE *fp) attribute_hidden;
648 extern int __scan_getc(register struct scan_cookie *sc) attribute_hidden;
649 extern void __scan_ungetc(register struct scan_cookie *sc) attribute_hidden;
651 #ifdef __UCLIBC_HAS_FLOATS__
652 extern int __scan_strtold(long double *ld, struct scan_cookie *sc);
653 #endif /* __UCLIBC_HAS_FLOATS__ */
655 extern int __psfs_parse_spec(psfs_t *psfs) attribute_hidden;
656 extern int __psfs_do_numeric(psfs_t *psfs, struct scan_cookie *sc) attribute_hidden;
658 /**********************************************************************/
659 #ifdef L___scan_cookie
661 #ifdef __UCLIBC_MJN3_ONLY__
662 #warning TODO: Remove dependence on decpt_str and fake_decpt in stub locale mode.
664 #ifndef __UCLIBC_HAS_LOCALE__
665 static const char decpt_str[] = ".";
668 void attribute_hidden __init_scan_cookie(register struct scan_cookie *sc,
674 sc->app_ungot = ((fp->__modeflags & __FLAG_UNGOT) ? fp->__ungot[1] : 0);
675 #ifdef __UCLIBC_HAS_WCHAR__
676 sc->ungot_wflag = 0; /* vfwscanf */
678 #endif /* __UCLIBC_HAS_WCHAR__ */
680 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
681 if (*(sc->grouping = __UCLIBC_CURLOCALE->grouping)) {
682 sc->thousands_sep = (const unsigned char *) __UCLIBC_CURLOCALE->thousands_sep;
683 sc->tslen = __UCLIBC_CURLOCALE->thousands_sep_len;
684 #ifdef __UCLIBC_HAS_WCHAR__
685 sc->thousands_sep_wc = __UCLIBC_CURLOCALE->thousands_sep_wc;
686 #endif /* __UCLIBC_HAS_WCHAR__ */
688 #endif /* __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__ */
690 #ifdef __UCLIBC_HAS_FLOATS__
691 #ifdef __UCLIBC_HAS_LOCALE__
692 sc->decpt = (const unsigned char *) __UCLIBC_CURLOCALE->decimal_point;
693 sc->decpt_len = __UCLIBC_CURLOCALE->decimal_point_len;
694 #else /* __UCLIBC_HAS_LOCALE__ */
695 sc->fake_decpt = sc->decpt = (unsigned char *) decpt_str;
697 #endif /* __UCLIBC_HAS_LOCALE__ */
698 #ifdef __UCLIBC_HAS_WCHAR__
699 #ifdef __UCLIBC_HAS_LOCALE__
700 sc->decpt_wc = __UCLIBC_CURLOCALE->decimal_point_wc;
704 #endif /* __UCLIBC_HAS_WCHAR__ */
705 #endif /* __UCLIBC_HAS_FLOATS__ */
709 int attribute_hidden __scan_getc(register struct scan_cookie *sc)
713 #ifdef __UCLIBC_HAS_WCHAR__
714 assert(!sc->mb_fail);
715 #endif /* __UCLIBC_HAS_WCHAR__ */
719 if (--sc->width < 0) {
724 if (sc->ungot_flag == 0) {
725 #if !defined(__STDIO_BUFFERS) && !defined(__UCLIBC_HAS_WCHAR__)
726 if (!__STDIO_STREAM_IS_FAKE_VSSCANF_NB(sc->fp)) {
729 __FILE_vsscanf *fv = (__FILE_vsscanf *)(sc->fp);
730 if (fv->bufpos < fv->bufread) {
734 sc->fp->__modeflags |= __FLAG_EOF;
742 if ((c = GETC(sc)) == EOF) {
749 assert(sc->ungot_flag == 1);
754 return sc->cc = sc->ungot_char;
757 void attribute_hidden __scan_ungetc(register struct scan_cookie *sc)
760 if (sc->ungot_flag == 2) { /* last was EOF */
762 sc->cc = sc->ungot_char;
763 } else if (sc->ungot_flag == 0) {
772 /**********************************************************************/
773 #ifdef L___psfs_parse_spec
776 static const unsigned char spec_flags[] = SPEC_FLAGS;
777 #endif /* SPEC_FLAGS */
778 static const unsigned char spec_chars[] = SPEC_CHARS;
779 static const unsigned char qual_chars[] = QUAL_CHARS;
780 static const unsigned char spec_ranges[] = SPEC_RANGES;
781 static const unsigned short spec_allowed[] = SPEC_ALLOWED_FLAGS;
783 int attribute_hidden __psfs_parse_spec(register psfs_t *psfs)
785 const unsigned char *p;
786 const unsigned char *fmt0 = psfs->fmt;
791 #if defined(NL_ARGMAX) && (NL_ARGMAX > 0)
792 unsigned char fail = 0;
794 i = 0; /* Do this here to avoid a warning. */
796 if (!__isdigit_char(*psfs->fmt)) { /* Not a positional arg. */
801 /* parse the positional arg (or width) value */
803 if (i <= ((INT_MAX - 9)/10)) {
804 i = (i * 10) + (*psfs->fmt++ - '0');
806 } while (__isdigit_char(*psfs->fmt));
808 if (*psfs->fmt != '$') { /* This is a max field width. */
809 if (psfs->num_pos_args >= 0) { /* Already saw a pos arg! */
813 psfs->num_pos_args = -2;
816 ++psfs->fmt; /* Advance past '$'. */
817 #endif /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
819 #if defined(SPEC_FLAGS) || (defined(NL_ARGMAX) && (NL_ARGMAX > 0))
821 #endif /* defined(SPEC_FLAGS) || (defined(NL_ARGMAX) && (NL_ARGMAX > 0)) */
826 if (*p == *psfs->fmt) {
834 if (psfs->flags & FLAG_SURPRESS) { /* Suppress assignment. */
838 #else /* SPEC_FLAGS */
839 if (*psfs->fmt == '*') { /* Suppress assignment. */
844 #endif /* SPEC_FLAGS */
847 #if defined(NL_ARGMAX) && (NL_ARGMAX > 0)
849 /* Must be a non-positional arg */
850 if (psfs->num_pos_args >= 0) { /* Already saw a pos arg! */
853 psfs->num_pos_args = -2;
855 if ((psfs->num_pos_args == -2) || (((unsigned int)(--i)) >= NL_ARGMAX)) {
856 /* Already saw a non-pos arg or (0-based) num too large. */
859 psfs->cur_pos_arg = i;
861 #endif /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
864 for (i = 0 ; __isdigit_char(*psfs->fmt) ; ) {
865 if (i <= ((INT_MAX - 9)/10)) {
866 i = (i * 10) + (*psfs->fmt++ - '0');
871 #if defined(NL_ARGMAX) && (NL_ARGMAX > 0)
873 #endif /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
876 if (*psfs->fmt == *p) {
881 if ((p - qual_chars < 2) && (*psfs->fmt == *p)) {
882 p += ((sizeof(qual_chars)-2) / 2);
885 psfs->dataargtype = ((int)(p[(sizeof(qual_chars)-2) / 2])) << 8;
887 #ifdef __UCLIBC_MJN3_ONLY__
888 #warning CONSIDER: Should we validate that psfs->max_width > 0 in __psfs_parse_spec()? It would avoid whitespace consumption...
889 #warning CONSIDER: Should INT_MAX be a valid width (%c/%C)? See __psfs_parse_spec().
890 #endif /* __UCLIBC_MJN3_ONLY__ */
894 if (*psfs->fmt == *p) {
895 int p_m_spec_chars = p - spec_chars;
898 (psfs->fmt[1] == '[' || psfs->fmt[1] == 'c' ||
899 /* Assumes ascii for 's' and 'S' test. */
900 (psfs->fmt[1] | 0x20) == 's'))
903 psfs->flags |= FLAG_MALLOC;
906 continue; /* The related conversions follow 'm'. */
909 for (p = spec_ranges; p_m_spec_chars > *p ; ++p) {}
910 if (((psfs->dataargtype >> 8) | psfs->flags)
911 & ~spec_allowed[(int)(p - spec_ranges)]
916 if (p_m_spec_chars == CONV_p) {
917 /* a pointer has the same size as 'long int' */
918 psfs->dataargtype = PA_FLAG_LONG;
919 } else if ((p_m_spec_chars >= CONV_c)
920 && (psfs->dataargtype & PA_FLAG_LONG)) {
921 p_m_spec_chars -= CONV_c - CONV_C; /* lc -> C, ls -> S, l[ -> ?? */
924 psfs->conv_num = p_m_spec_chars;
925 return psfs->fmt - fmt0;
938 /**********************************************************************/
939 #if defined(L_vfscanf) || defined(L_vfwscanf)
941 #ifdef __UCLIBC_HAS_WCHAR__
943 static int sc_getc(register struct scan_cookie *sc)
945 return (getc_unlocked)(sc->fp); /* Disable the macro. */
948 static int scan_getwc(register struct scan_cookie *sc)
955 if (--sc->width < 0) {
960 width = sc->width; /* Preserve width. */
961 sc->width = INT_MAX; /* MB_CUR_MAX can invoke a function. */
963 assert(!sc->mb_fail);
966 while (__scan_getc(sc) >= 0) {
969 r = mbrtowc(wc, b, 1, &sc->mbstate);
970 if (((ssize_t) r) >= 0) { /* Successful completion of a wc. */
973 } else if (r == ((size_t) -2)) {
974 /* Potentially valid but incomplete. */
980 if (r == ((size_t)(-3))) { /* EOF or ERROR on first read */
984 /* If we reach here, either r == ((size_t)-1) and
985 * mbrtowc set errno to EILSEQ, or r == ((size_t)-2)
986 * and stream is in an error state or at EOF with a
987 * partially complete wchar. */
988 __set_errno(EILSEQ); /* In case of incomplete conversion. */
993 sc->width = width; /* Restore width. */
995 return (int)((ssize_t) r);
998 #endif /* L_vfscanf */
1002 /* This gets called by __scan_getc. __scan_getc is called by vfwscanf
1003 * when the next wide char is expected to be valid ascii (digits).
1005 static int sc_getc(register struct scan_cookie *sc)
1009 if (__STDIO_STREAM_IS_FAKE_VSWSCANF(sc->fp)) {
1010 if (sc->fp->__bufpos < sc->fp->__bufend) {
1011 wc = *((wchar_t *)(sc->fp->__bufpos));
1012 sc->fp->__bufpos += sizeof(wchar_t);
1014 sc->fp->__modeflags |= __FLAG_EOF;
1017 } else if ((wc = fgetwc_unlocked(sc->fp)) == WEOF) {
1021 sc->ungot_wflag = 1;
1022 sc->ungot_wchar = wc;
1023 sc->ungot_wchar_width = sc->fp->__ungot_width[0];
1025 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
1026 if (wc == sc->thousands_sep_wc) {
1029 #endif /* __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__ */
1030 #ifdef __UCLIBC_HAS_FLOATS__
1031 if (wc == sc->decpt_wc) {
1034 #endif /* __UCLIBC_HAS_FLOATS__ */
1035 sc->wc = sc->ungot_char = wc;
1040 static int scan_getwc(register struct scan_cookie *sc)
1046 if (--sc->width < 0) {
1047 sc->ungot_flag |= 2;
1051 if (sc->ungot_flag == 0) {
1052 if (__STDIO_STREAM_IS_FAKE_VSWSCANF(sc->fp)) {
1053 if (sc->fp->__bufpos < sc->fp->__bufend) {
1054 wc = *((wchar_t *)(sc->fp->__bufpos));
1055 sc->fp->__bufpos += sizeof(wchar_t);
1057 sc->ungot_flag |= 2;
1060 } else if ((wc = fgetwc_unlocked(sc->fp)) == WEOF) {
1061 sc->ungot_flag |= 2;
1064 sc->ungot_wflag = 1;
1065 sc->ungot_char = wc;
1066 sc->ungot_wchar_width = sc->fp->__ungot_width[0];
1068 assert(sc->ungot_flag == 1);
1073 sc->wc = sc->ungot_char;
1079 #endif /* L_vfwscanf */
1080 #endif /* __UCLIBC_HAS_WCHAR__ */
1082 static __inline void kill_scan_cookie(register struct scan_cookie *sc)
1086 if (sc->ungot_flag & 1) {
1087 #if !defined(__STDIO_BUFFERS) && !defined(__UCLIBC_HAS_WCHAR__)
1088 if (!__STDIO_STREAM_IS_FAKE_VSSCANF_NB(sc->fp)) {
1089 ungetc(sc->ungot_char, sc->fp);
1092 ungetc(sc->ungot_char, sc->fp);
1094 /* Deal with distiction between user and scanf ungots. */
1095 if (sc->nread == 0) { /* Only one char was read... app ungot? */
1096 sc->fp->__ungot[1] = sc->app_ungot; /* restore ungot state. */
1098 sc->fp->__ungot[1] = 0;
1104 if ((sc->ungot_flag & 1) && (sc->ungot_wflag & 1)
1105 && !__STDIO_STREAM_IS_FAKE_VSWSCANF(sc->fp)
1106 && (sc->fp->__state.__mask == 0)
1108 ungetwc(sc->ungot_char, sc->fp);
1109 /* Deal with distiction between user and scanf ungots. */
1110 if (sc->nread == 0) { /* Only one char was read... app ungot? */
1111 sc->fp->__ungot[1] = sc->app_ungot; /* restore ungot state. */
1113 sc->fp->__ungot[1] = 0;
1115 sc->fp->__ungot_width[1] = sc->ungot_wchar_width;
1122 int VFSCANF (FILE *__restrict fp, const Wchar *__restrict format, va_list arg)
1130 #endif /* L_vfwscanf */
1132 #if defined(__UCLIBC_HAS_LOCALE__) && !defined(L_vfwscanf) || !defined(L_vfscanf)
1136 struct scan_cookie sc;
1140 #ifdef __UCLIBC_MJN3_ONLY__
1141 #warning TODO: Fix MAX_DIGITS. We do not do binary, so...!
1143 #define MAX_DIGITS 65 /* Allow one leading 0. */
1144 unsigned char buf[MAX_DIGITS+2];
1146 unsigned char scanset[UCHAR_MAX + 1];
1147 unsigned char invert; /* Careful! Meaning changes. */
1148 #endif /* L_vfscanf */
1150 unsigned char zero_conversions = 1;
1151 __STDIO_AUTO_THREADLOCK_VAR;
1153 #ifdef __UCLIBC_MJN3_ONLY__
1154 #warning TODO: Make checking of the format string in C locale an option.
1156 /* To support old programs, don't check mb validity if in C locale. */
1157 #if defined(__UCLIBC_HAS_LOCALE__) && !defined(L_vfwscanf)
1158 /* ANSI/ISO C99 requires format string to be a valid multibyte string
1159 * beginning and ending in its initial shift state. */
1160 if (__UCLIBC_CURLOCALE->encoding != __ctype_encoding_7_bit) {
1161 const char *p = format;
1162 mbstate.__mask = 0; /* Initialize the mbstate. */
1163 if (mbsrtowcs(NULL, &p, SIZE_MAX, &mbstate) == ((size_t)(-1))) {
1164 __set_errno(EINVAL); /* Format string is invalid. */
1168 #endif /* defined(__UCLIBC_HAS_LOCALE__) && !defined(L_vfwscanf) */
1170 #if defined(NL_ARGMAX) && (NL_ARGMAX > 0)
1171 psfs.num_pos_args = -1; /* Must start at -1. */
1172 /* Initialize positional arg ptrs to NULL. */
1173 memset(psfs.pos_args, 0, sizeof(psfs.pos_args));
1174 #endif /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
1176 __STDIO_AUTO_THREADLOCK(fp);
1178 __STDIO_STREAM_VALIDATE(fp);
1180 __init_scan_cookie(&sc,fp);
1181 #ifdef __UCLIBC_HAS_WCHAR__
1182 sc.sc_getc = sc_getc;
1183 sc.ungot_wchar_width = sc.fp->__ungot_width[1];
1187 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
1189 sc.thousands_sep = (const unsigned char *) ",";
1192 #endif /* __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__ */
1194 #ifdef __UCLIBC_HAS_FLOATS__
1195 sc.fake_decpt = (const unsigned char *) ".";
1196 #endif /* __UCLIBC_HAS_FLOATS__ */
1198 #else /* L_vfwscanf */
1200 #ifdef __UCLIBC_HAS_FLOATS__
1201 sc.fake_decpt = sc.decpt;
1202 #endif /* __UCLIBC_HAS_FLOATS__ */
1204 #endif /* L_vfwscanf */
1206 #endif /* __UCLIBC_HAS_WCHAR__ */
1209 /* Note: If we ever wanted to support non-nice codesets, we
1210 * would really need to do a mb->wc conversion here in the
1211 * vfscanf case. Related changes would have to be made in
1212 * the code that follows... basicly wherever fmt appears. */
1213 for (fmt = (const Wuchar *) format ; *fmt ; /* ++fmt */) {
1218 psfs.cur_ptr = NULL; /* Debugging aid. */
1222 sc.ungot_flag &= 1; /* Clear (possible fake) EOF. */
1223 sc.width = psfs.max_width = INT_MAX;
1225 /* Note: According to the standards, vfscanf does use isspace
1226 * here. So, if we did a mb->wc conversion, we would have to do
1228 * ((((__uwchar_t)wc) < UCHAR_MAX) && isspace(wc))
1229 * because wc might not be in the allowed domain. */
1230 if (ISSPACE(*fmt)) {
1233 } while (ISSPACE(*fmt));
1235 psfs.conv_num = CONV_whitespace;
1239 if (*fmt == '%') { /* Conversion specification. */
1240 if (*++fmt == '%') { /* Remember, '%' eats whitespace too. */
1241 /* Note: The standard says no conversion occurs.
1242 * So do not reset zero_conversions flag. */
1243 psfs.conv_num = CONV_percent;
1250 #else /* L_vfscanf */
1252 const __uwchar_t *wf = fmt;
1255 while (*wf && __isascii(*wf) && (b < buf + sizeof(buf) - 1)) {
1259 if (b == buf) { /* Bad conversion specifier! */
1263 #endif /* L_vfscanf */
1264 if ((i = __psfs_parse_spec(&psfs)) < 0) { /* Bad conversion specifier! */
1270 #if defined(NL_ARGMAX) && (NL_ARGMAX > 0)
1271 if (psfs.num_pos_args == -2) {
1272 psfs.cur_ptr = va_arg(arg, void *);
1274 while (psfs.cur_pos_arg > psfs.num_pos_args) {
1275 psfs.pos_args[++psfs.num_pos_args] = va_arg(arg, void *);
1277 psfs.cur_ptr = psfs.pos_args[psfs.cur_pos_arg];
1279 #else /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
1280 psfs.cur_ptr = va_arg(arg, void *);
1281 #endif /* defined(NL_ARGMAX) && (NL_ARGMAX > 0) */
1285 /* First, consume white-space if not n, c, [, C, or l[. */
1286 if ((((1L << CONV_n)|(1L << CONV_C)|(1L << CONV_c)
1287 |(1L << CONV_LEFTBRACKET)|(1L << CONV_leftbracket))
1288 & (1L << psfs.conv_num)) == 0
1291 while ((__scan_getc(&sc) >= 0)
1294 #else /* L_vfscanf */
1296 #endif /* L_vfscanf */
1299 if (psfs.conv_num == CONV_whitespace) {
1304 sc.width = psfs.max_width; /* Now limit the max width. */
1306 if (sc.width == 0) { /* 0 width is forbidden. */
1311 if (psfs.conv_num == CONV_percent) {
1315 if (psfs.conv_num == CONV_n) {
1316 #ifdef __UCLIBC_MJN3_ONLY__
1317 #warning CONSIDER: Should %n count as a conversion as far as EOF return value?
1319 /* zero_conversions = 0; */
1321 _store_inttype(psfs.cur_ptr, psfs.dataargtype,
1322 (uintmax_t) sc.nread);
1327 if (psfs.conv_num <= CONV_A) { /* pointer, integer, or float spec */
1328 int r = __psfs_do_numeric(&psfs, &sc);
1330 if (sc.ungot_wflag == 1) { /* fix up '?', '.', and ',' hacks */
1331 sc.cc = sc.ungot_char = sc.ungot_wchar;
1334 if (r != -1) { /* Either success or a matching failure. */
1335 zero_conversions = 0;
1343 /* Do string conversions here since they are not common code. */
1349 #ifdef __UCLIBC_HAS_WCHAR__
1350 (psfs.conv_num >= CONV_LEFTBRACKET)
1351 #else /* __UCLIBC_HAS_WCHAR__ */
1352 (psfs.conv_num >= CONV_c)
1353 #endif /* __UCLIBC_HAS_WCHAR__ */
1355 /* We might have to handle the allocation ourselves */
1357 unsigned char **ptr;
1359 b = (psfs.store ? ((unsigned char *) psfs.cur_ptr) : buf);
1360 /* With 'm', we actually got a pointer to a pointer */
1364 if (psfs.flags & FLAG_MALLOC) {
1372 if (psfs.conv_num == CONV_c) {
1373 if (sc.width == INT_MAX) {
1377 if (psfs.flags & FLAG_MALLOC)
1378 b = malloc(sc.width);
1380 while (__scan_getc(&sc) >= 0) {
1381 zero_conversions = 0;
1386 if (sc.width > 0) { /* Failed to read all required. */
1389 if (psfs.flags & FLAG_MALLOC)
1391 psfs.cnt += psfs.store;
1395 if (psfs.conv_num == CONV_s) {
1397 /* Yes, believe it or not, a %s conversion can store nuls. */
1398 while ((__scan_getc(&sc) >= 0) && !isspace(sc.cc)) {
1399 zero_conversions = 0;
1401 /* Pick a size that won't trigger a lot of
1402 * mallocs early on ... */
1404 b = realloc(b, len + 1);
1412 #ifdef __UCLIBC_HAS_WCHAR__
1413 assert((psfs.conv_num == CONV_LEFTBRACKET) || \
1414 (psfs.conv_num == CONV_leftbracket));
1415 #else /* __UCLIBC_HAS_WCHAR__ */
1416 assert((psfs.conv_num == CONV_leftbracket));
1417 #endif /* __UCLIBC_HAS_WCHAR__ */
1421 if (*++fmt == '^') {
1425 memset(scanset, invert, sizeof(scanset));
1429 scanset[(int)(']')] = invert;
1433 while (*fmt != ']') {
1434 if (!*fmt) { /* No closing ']'. */
1437 if ((*fmt == '-') && (fmt[1] != ']')
1438 && (fmt[-1] < fmt[1]) /* sorted? */
1442 /* Note: scanset[i] should already have been done
1443 * in the previous iteration. */
1445 scanset[++i] = invert;
1447 /* Safe to fall through, and a bit smaller. */
1450 scanset[(int) *fmt] = invert;
1454 #ifdef __UCLIBC_HAS_WCHAR__
1455 if (psfs.conv_num == CONV_LEFTBRACKET) {
1456 goto DO_LEFTBRACKET;
1458 #endif /* __UCLIBC_HAS_WCHAR__ */
1461 while (__scan_getc(&sc) >= 0) {
1462 zero_conversions = 0;
1463 if (!scanset[sc.cc]) {
1467 /* Pick a size that won't trigger a lot of
1468 * mallocs early on ... */
1470 b = realloc(b, len + 1);
1477 /* Common tail for processing of %s and %[. */
1480 if (fail) { /* nothing stored! */
1483 if (psfs.flags & FLAG_MALLOC)
1486 *b = 0; /* Nul-terminate string. */
1487 psfs.cnt += psfs.store;
1491 #ifdef __UCLIBC_HAS_WCHAR__
1492 DO_LEFTBRACKET: /* Need to do common wide init. */
1493 if (psfs.conv_num >= CONV_C) {
1497 sc.mbstate.__mask = 0;
1499 wb = (psfs.store ? ((wchar_t *) psfs.cur_ptr) : wbuf);
1502 if (psfs.conv_num == CONV_C) {
1503 if (sc.width == INT_MAX) {
1507 while (scan_getwc(&sc) >= 0) {
1508 zero_conversions = 0;
1509 assert(sc.width >= 0);
1515 if (sc.width > 0) { /* Failed to read all required. */
1518 psfs.cnt += psfs.store;
1523 if (psfs.conv_num == CONV_S) {
1524 /* Yes, believe it or not, a %s conversion can store nuls. */
1525 while (scan_getwc(&sc) >= 0) {
1526 zero_conversions = 0;
1527 if ((((__uwchar_t)(sc.wc)) <= UCHAR_MAX) && isspace(sc.wc)) {
1535 assert(psfs.conv_num == CONV_LEFTBRACKET);
1537 while (scan_getwc(&sc) >= 0) {
1538 zero_conversions = 0;
1539 if (((__uwchar_t) sc.wc) <= UCHAR_MAX) {
1540 if (!scanset[sc.wc]) {
1543 } else if (invert) {
1551 /* Common tail for processing of %ls and %l[. */
1554 if (fail || sc.mb_fail) { /* Nothing stored or mb error. */
1557 *wb = 0; /* Nul-terminate string. */
1558 psfs.cnt += psfs.store;
1563 #endif /* __UCLIBC_HAS_WCHAR__ */
1564 #else /* L_vfscanf */
1566 if (psfs.conv_num >= CONV_C) {
1569 if (psfs.conv_num >= CONV_c) {
1570 mbstate.__mask = 0; /* Initialize the mbstate. */
1572 b = (unsigned char *) psfs.cur_ptr;
1576 wb = (wchar_t *) psfs.cur_ptr;
1582 if ((psfs.conv_num == CONV_C) || (psfs.conv_num == CONV_c)) {
1583 if (sc.width == INT_MAX) {
1587 while (scan_getwc(&sc) >= 0) {
1588 zero_conversions = 0;
1589 if (psfs.conv_num == CONV_C) {
1593 i = wcrtomb((char*) b, sc.wc, &mbstate);
1594 if (i < 0) { /* Conversion failure. */
1603 if (sc.width > 0) { /* Failed to read all required. */
1606 psfs.cnt += psfs.store;
1610 if ((psfs.conv_num == CONV_S) || (psfs.conv_num == CONV_s)) {
1611 /* Yes, believe it or not, a %s conversion can store nuls. */
1612 while (scan_getwc(&sc) >= 0) {
1613 zero_conversions = 0;
1614 if (iswspace(sc.wc)) {
1617 if (psfs.conv_num == CONV_S) {
1621 i = wcrtomb((char*) b, sc.wc, &mbstate);
1622 if (i < 0) { /* Conversion failure. */
1634 unsigned char invert = 0;
1636 assert((psfs.conv_num == CONV_LEFTBRACKET)
1637 || (psfs.conv_num == CONV_leftbracket));
1639 if (*++fmt == '^') {
1643 sss = (const wchar_t *) fmt;
1647 while (*fmt != ']') {
1648 if (!*fmt) { /* No closing ']'. */
1651 if ((*fmt == '-') && (fmt[1] != ']')
1652 && (fmt[-1] < fmt[1]) /* sorted? */
1658 /* Ok... a valid scanset spec. */
1660 while (scan_getwc(&sc) >= 0) {
1661 zero_conversions = 0;
1663 do { /* We know sss < fmt. */
1664 if (*ssp == '-') { /* possible range... */
1665 /* Note: We accept a-c-e (ordered) as
1666 * equivalent to a-e. */
1668 if ((++ssp < (const wchar_t *) fmt)
1669 && (ssp[-2] < *ssp) /* sorted? */
1671 if ((sc.wc >= ssp[-2])
1672 && (sc.wc <= *ssp)) {
1675 continue; /* not in range */
1677 --ssp; /* oops... '-' at end, so back up */
1679 /* false alarm... a literal '-' */
1681 if (sc.wc == *ssp) { /* Matched literal char. */
1684 } while (++ssp < (const wchar_t *) fmt);
1686 if ((ssp == (const wchar_t *) fmt) ^ invert) {
1687 /* no match and not inverting
1688 * or match and inverting */
1691 if (psfs.conv_num == CONV_LEFTBRACKET) {
1695 i = wcrtomb((char*) b, sc.wc, &mbstate);
1696 if (i < 0) { /* Conversion failure. */
1706 /* Common tail for processing of %s and %[. */
1709 if (fail) { /* nothing stored! */
1712 *wb = 0; /* Nul-terminate string. */
1714 psfs.cnt += psfs.store;
1718 #endif /* L_vfscanf */
1722 } /* conversion specification */
1725 if (__scan_getc(&sc) != *fmt) {
1728 #endif /* L_vfwscanf */
1735 if (__FERROR_UNLOCKED(fp)) {
1741 if (__FERROR_UNLOCKED(fp) || (*fmt && zero_conversions && __FEOF_UNLOCKED(fp))) {
1742 psfs.cnt = EOF; /* Yes, vfwscanf also returns EOF. */
1745 kill_scan_cookie(&sc);
1747 __STDIO_STREAM_VALIDATE(fp);
1749 __STDIO_AUTO_THREADUNLOCK(fp);
1753 libc_hidden_def(VFSCANF)
1755 /**********************************************************************/
1756 #ifdef L___psfs_do_numeric
1758 static const unsigned char spec_base[] = SPEC_BASE;
1759 static const unsigned char nil_string[] = "(nil)";
1761 int attribute_hidden __psfs_do_numeric(psfs_t *psfs, struct scan_cookie *sc)
1764 const unsigned char *p;
1766 #ifdef __UCLIBC_HAS_FLOATS__
1769 #ifdef __UCLIBC_MJN3_ONLY__
1770 #warning TODO: Fix MAX_DIGITS. We do not do binary, so...!
1771 #warning TODO: Fix buf!
1773 #define MAX_DIGITS 65 /* Allow one leading 0. */
1774 unsigned char buf[MAX_DIGITS+2+ 100];
1775 unsigned char usflag, base;
1776 unsigned char nonzero = 0;
1777 unsigned char seendigit = 0;
1779 #ifdef __UCLIBC_MJN3_ONLY__
1780 #warning CONSIDER: What should be returned for an invalid conversion specifier?
1782 #ifndef __UCLIBC_HAS_FLOATS__
1783 if (psfs->conv_num > CONV_i) { /* floating point */
1788 base = spec_base[psfs->conv_num - CONV_p];
1789 usflag = (psfs->conv_num <= CONV_u); /* (1)0 if (un)signed */
1793 if (psfs->conv_num == CONV_p) { /* Pointer */
1796 if ((__scan_getc(sc) < 0) || (*p != sc->cc)) {
1798 if (p > nil_string) {
1799 /* We matched at least the '(' so even if we
1800 * are at eof, we can not match a pointer. */
1801 return -2; /* Matching failure */
1805 if (!*++p) { /* Matched (nil), so no unget necessary. */
1808 _store_inttype(psfs->cur_ptr, psfs->dataargtype,
1815 #ifdef __UCLIBC_MJN3_ONLY__
1816 #warning CONSIDER: Should we require a 0x prefix and disallow +/- for pointer %p?
1817 #endif /* __UCLIBC_MJN3_ONLY__ */
1822 return -1; /* Input failure (nothing read yet). */
1825 if ((sc->cc == '+') || (sc->cc == '-')) { /* Handle leading sign.*/
1830 if ((base & 0xef) == 0) { /* 0xef is ~16, so 16 or 0. */
1831 if (sc->cc == '0') { /* Possibly set base and handle prefix. */
1833 if ((sc->cc|0x20) == 'x') { /* Assumes ascii.. x or X. */
1834 if (__scan_getc(sc) < 0) {
1835 /* Either EOF or error (including wc outside char range).
1836 * If EOF or error, this is a matching failure (we read 0x).
1837 * If wc outside char range, this is also a matching failure.
1838 * Hence, we do an unget (although not really necessary here
1840 goto DONE_DO_UNGET; /* matching failure */
1842 base = 16; /* Base 16 for sure now. */
1843 #ifdef __UCLIBC_HAS_HEXADECIMAL_FLOATS__
1844 /* The prefix is required for hexadecimal floats. */
1847 #endif /* __UCLIBC_HAS_HEXADECIMAL_FLOATS__ */
1848 } else { /* oops... back up */
1850 sc->cc = '0'; /* NASTY HACK! */
1852 base = (base >> 1) + 8; /* 0->8, 16->16. no 'if' */
1853 #ifdef __UCLIBC_HAS_FLOATS__
1854 if (psfs->conv_num > CONV_i) { /* floating point */
1864 /***************** digit grouping **********************/
1865 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
1867 if ((psfs->flags & FLAG_THOUSANDS) && (base == 10)
1868 && *(p = (const unsigned char *) sc->grouping)
1871 int nblk1, nblk2, nbmax, lastblock, pass, i;
1874 #ifdef __UCLIBC_MJN3_ONLY__
1875 #warning CONSIDER: Should we initalize the grouping blocks in __init_scan_cookie()?
1876 #endif /* __UCLIBC_MJN3_ONLY__ */
1877 nbmax = nblk2 = nblk1 = *p;
1880 if (nbmax < nblk2) {
1886 /* Note: for printf, if 0 and \' flags appear then
1887 * grouping is done before 0-padding. Should we
1888 * strip leading 0's first? Or add a 0 flag? */
1890 /* For vfwscanf, sc_getc translates, so the value of sc->cc is
1891 * either EOF or a char. */
1893 if (!__isdigit_char_or_EOF(sc->cc)) { /* No starting digit! */
1894 #ifdef __UCLIBC_HAS_FLOATS__
1895 if (psfs->conv_num > CONV_i) { /* floating point */
1896 goto NO_STARTING_DIGIT;
1902 if (sc->cc == '0') {
1904 *b++ = '0'; /* Store the first 0. */
1905 #ifdef __UCLIBC_MJN3_ONLY__
1906 #warning CONSIDER: Should leading 0s be skipped before digit grouping? (printf 0 pad)
1907 #endif /* __UCLIBC_MJN3_ONLY__ */
1909 do { /* But ignore all subsequent 0s. */
1911 } while (sc->cc == '0');
1918 while (__isdigit_char_or_EOF(sc->cc)) {
1920 if (i == nbmax) { /* too many digits for a block */
1921 #ifdef __UCLIBC_HAS_SCANF_LENIENT_DIGIT_GROUPING__
1922 if (!pass) { /* treat as nongrouped */
1926 goto DO_TRIM_LEADING_ZEROS;
1929 if (nbmax > nblk1) {
1930 goto DONE_DO_UNGET; /* matching failure */
1932 goto DONE_GROUPING_DO_UNGET; /* nbmax == nblk1 */
1936 if (nonzero || (sc->cc != '0')) {
1937 if (b < buf + MAX_DIGITS) {
1940 #ifdef __UCLIBC_HAS_FLOATS__
1950 if (i) { /* we saw digits digits */
1951 if ((i == nblk2) || ((i < nblk2) && !pass)) {
1952 /* (possible) outer grp */
1953 p = sc->thousands_sep;
1954 if (*p == sc->cc) { /* first byte matches... */
1955 /* so check if grouping mb char */
1956 /* Since 1st matched, either match or fail now
1957 * unless EOF (yuk) */
1960 if (!*++p) { /* is a grouping mb char */
1969 /* bad grouping mb char! */
1971 if ((sc->cc >= 0) || (p > sc->thousands_sep + 1)) {
1972 #ifdef __UCLIBC_HAS_FLOATS__
1973 /* We failed to match a thousep mb char, and
1974 * we've read too much to recover. But if
1975 * this is a floating point conversion and
1976 * the initial portion of the decpt mb char
1977 * matches, then we may still be able to
1979 int k = p - sc->thousands_sep - 1;
1981 if ((psfs->conv_num > CONV_i) /* float conversion */
1982 && (!pass || (i == nblk1)) /* possible last */
1983 && !memcmp(sc->thousands_sep, sc->fake_decpt, k)
1984 /* and prefix matched, so could be decpt */
1987 p = sc->fake_decpt + k;
1990 strcpy((char*) b, (char*) sc->decpt);
2001 #endif /* __UCLIBC_HAS_FLOATS__ */
2004 /* was EOF and 1st, so recoverable. */
2007 if ((i == nblk1) || ((i < nblk1) && !pass)) {
2008 /* got an inner group */
2009 goto DONE_GROUPING_DO_UNGET;
2011 goto DONE_DO_UNGET; /* Matching failure. */
2019 assert(0); /* Should never get here. */
2022 #endif /***************** digit grouping **********************/
2024 /* Not grouping so first trim all but one leading 0. */
2025 #ifdef __UCLIBC_HAS_SCANF_LENIENT_DIGIT_GROUPING__
2026 DO_TRIM_LEADING_ZEROS:
2027 #endif /* __UCLIBC_HAS_SCANF_LENIENT_DIGIT_GROUPING__ */
2028 if (sc->cc == '0') {
2030 *b++ = '0'; /* Store the first 0. */
2031 do { /* But ignore all subsequent 0s. */
2033 } while (sc->cc == '0');
2036 #ifdef __UCLIBC_HAS_SCANF_LENIENT_DIGIT_GROUPING__
2038 #endif /* __UCLIBC_HAS_SCANF_LENIENT_DIGIT_GROUPING__ */
2039 /* At this point, we're ready to start reading digits. */
2041 #define valid_digit(cc,base) (isxdigit(cc) && ((base == 16) || (cc - '0' < base)))
2043 while (valid_digit(sc->cc,base)) { /* Now for significant digits.*/
2044 if (b - buf < MAX_DIGITS) {
2045 nonzero = seendigit = 1; /* Set nonzero too 0s trimmed above. */
2047 #ifdef __UCLIBC_HAS_FLOATS__
2055 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
2056 DONE_GROUPING_DO_UNGET:
2057 #endif /* __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__ */
2058 if (psfs->conv_num <= CONV_i) { /* integer conversion */
2060 *b = 0; /* null-terminate */
2062 goto DONE; /* No digits! */
2069 _store_inttype(psfs->cur_ptr, psfs->dataargtype,
2070 (uintmax_t) STRTOUIM((char *) buf, NULL, base, 1-usflag));
2075 #ifdef __UCLIBC_HAS_FLOATS__
2077 /* At this point, we have everything left of the decimal point or exponent. */
2078 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
2084 strcpy((char *) b, (char *) sc->decpt);
2089 if (p > sc->fake_decpt) {
2090 goto DONE_DO_UNGET; /* matching failure (read some of decpt) */
2092 goto DO_DIGIT_CHECK;
2098 #ifdef __UCLIBC_HAS_GLIBC_DIGIT_GROUPING__
2102 if (sc->cc == '0') {
2103 assert(exp_adjust == 0);
2110 } while (sc->cc == '0');
2114 while (valid_digit(sc->cc,base)) { /* Process fractional digits.*/
2115 if (b - buf < MAX_DIGITS) {
2123 /* Hmm... no decimal point. */
2125 static const unsigned char nan_inf_str[] = "an\0nfinity";
2127 if (base == 16) { /* We had a prefix, but no digits! */
2128 goto DONE_DO_UNGET; /* matching failure */
2131 /* Avoid tolower problems for INFINITY in the tr_TR locale. (yuk)*/
2133 #define TOLOWER(C) ((C)|0x20)
2135 switch (TOLOWER(sc->cc)) {
2137 p = nan_inf_str + 3;
2143 /* No digits and not inf or nan. */
2151 if (TOLOWER(sc->cc) == *p) {
2156 if (!*p || (p == nan_inf_str + 5)) { /* match nan/infinity or inf */
2159 /* Unrecoverable. Even if on 1st char, we had no digits. */
2164 /* If we get here, we had some digits. */
2167 #ifdef __UCLIBC_HAS_HEXADECIMAL_FLOATS__
2168 ((base == 16) && (((sc->cc)|0x20) == 'p')) ||
2170 (((sc->cc)|0x20) == 'e')
2171 ) { /* Process an exponent. */
2176 goto DONE_DO_UNGET; /* matching failure.. no exponent digits */
2179 if ((sc->cc == '+') || (sc->cc == '-')) { /* Signed exponent? */
2184 #ifdef __UCLIBC_MJN3_ONLY__
2185 #warning TODO: Fix MAX_EXP_DIGITS!
2187 #define MAX_EXP_DIGITS 20
2192 if (sc->cc == '0') {
2197 } while (sc->cc == '0');
2200 while (__isdigit_char_or_EOF(sc->cc)) { /* Exponent digits (base 10).*/
2201 if (seendigit < MAX_EXP_DIGITS) {
2208 if (!seendigit) { /* No digits. Unrecoverable. */
2219 x = __strtofpmax((char *) buf, &e, exp_adjust);
2222 if (psfs->dataargtype & PA_FLAG_LONG_LONG) {
2223 *((long double *)psfs->cur_ptr) = (long double) x;
2224 } else if (psfs->dataargtype & PA_FLAG_LONG) {
2225 *((double *)psfs->cur_ptr) = (double) x;
2227 *((float *)psfs->cur_ptr) = (float) x;
2234 #endif /* __UCLIBC_HAS_FLOATS__ */
2239 return -2; /* Matching failure. */
2243 /**********************************************************************/