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--- Libc/Libc-1725.40.4/stdio/FreeBSD/vfscanf.c
+++ /dev/null
@@ -1,1217 +0,0 @@
-/*-
- * Copyright (c) 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wcomma"
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)vfscanf.c 8.1 (Berkeley) 6/4/93";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdio/vfscanf.c,v 1.43 2009/01/19 06:19:51 das Exp $");
-
-#include "xlocale_private.h"
-
-#include "namespace.h"
-#include <ctype.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <stdarg.h>
-#include <string.h>
-#include <wchar.h>
-#include <wctype.h>
-#include <pthread.h>
-#include "un-namespace.h"
-
-#include "collate.h"
-#include "libc_private.h"
-#include "local.h"
-#include "libc_hooks_impl.h"
-
-#ifndef NO_FLOATING_POINT
-#include <locale.h>
-#endif
-
-#define BUF 513 /* Maximum length of numeric string. */
-
-/*
- * Flags used during conversion.
- */
-#define LONG 0x01 /* l: long or double */
-#define LONGDBL 0x02 /* L: long double */
-#define SHORT 0x04 /* h: short */
-#define SUPPRESS 0x08 /* *: suppress assignment */
-#define POINTER 0x10 /* p: void * (as hex) */
-#define NOSKIP 0x20 /* [ or c: do not skip blanks */
-#define LONGLONG 0x400 /* ll: long long (+ deprecated q: quad) */
-#define INTMAXT 0x800 /* j: intmax_t */
-#define PTRDIFFT 0x1000 /* t: ptrdiff_t */
-#define SIZET 0x2000 /* z: size_t */
-#define SHORTSHORT 0x4000 /* hh: char */
-#define UNSIGNED 0x8000 /* %[oupxX] conversions */
-
-/*
- * The following are used in integral conversions only:
- * SIGNOK, NDIGITS, PFXOK, and NZDIGITS
- */
-#define SIGNOK 0x40 /* +/- is (still) legal */
-#define NDIGITS 0x80 /* no digits detected */
-#define PFXOK 0x100 /* 0x prefix is (still) legal */
-#define NZDIGITS 0x200 /* no zero digits detected */
-#define HAVESIGN 0x10000 /* sign detected */
-
-/*
- * Conversion types.
- */
-#define CT_CHAR 0 /* %c conversion */
-#define CT_CCL 1 /* %[...] conversion */
-#define CT_STRING 2 /* %s conversion */
-#define CT_INT 3 /* %[dioupxX] conversion */
-#define CT_FLOAT 4 /* %[efgEFG] conversion */
-
-static const u_char *__sccl(char *, const u_char *, locale_t);
-#ifndef NO_FLOATING_POINT
-static int parsefloat(FILE *, char **, size_t, locale_t);
-#endif
-
-__weak_reference(__vfscanf, vfscanf);
-
-/*
- * __vfscanf - MT-safe version
- */
-int
-__vfscanf(FILE * __restrict fp, char const * __restrict fmt0, va_list ap)
-{
- int ret;
-
- libc_hooks_will_write(fp, sizeof(*fp));
-
- FLOCKFILE(fp);
- ret = __svfscanf_l(fp, __current_locale(), fmt0, ap);
- FUNLOCKFILE(fp);
- return (ret);
-}
-
-int
-vfscanf_l(FILE * __restrict fp, locale_t loc, char const * __restrict fmt0, va_list ap)
-{
- int ret;
-
- libc_hooks_will_write(fp, sizeof(*fp));
-
- NORMALIZE_LOCALE(loc);
- FLOCKFILE(fp);
- ret = __svfscanf_l(fp, loc, fmt0, ap);
- FUNLOCKFILE(fp);
- return (ret);
-}
-
-/*
- * __svfscanf - non-MT-safe version of __vfscanf
- */
-__private_extern__ int
-__svfscanf_l(FILE * __restrict fp, locale_t loc, const char * __restrict fmt0, va_list ap)
-{
- const u_char *fmt = (const u_char *)fmt0;
- int c; /* character from format, or conversion */
- size_t width; /* field width, or 0 */
- char *p; /* points into all kinds of strings */
- int n; /* handy integer */
- int flags; /* flags as defined above */
- char *p0; /* saves original value of p when necessary */
- int nassigned; /* number of fields assigned */
- int nread; /* number of characters consumed from fp */
- int base; /* base argument to conversion function */
- char ccltab[256]; /* character class table for %[...] */
- char buf[BUF]; /* buffer for numeric and mb conversions */
- wchar_t *wcp; /* handy wide character pointer */
- size_t nconv; /* length of multibyte sequence converted */
- int index; /* %index$, zero if unset */
- va_list ap_orig; /* to reset ap to first argument */
- static const mbstate_t initial;
- mbstate_t mbs;
- int mb_cur_max;
-
- /* `basefix' is used to avoid `if' tests in the integer scanner */
- static const short basefix[17] =
- { 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
-
- libc_hooks_will_write(loc, sizeof(*loc));
- libc_hooks_will_read_cstring(fmt0);
-
- NORMALIZE_LOCALE(loc);
- mb_cur_max = MB_CUR_MAX_L(loc);
- ORIENT(fp, -1);
-
- nassigned = 0;
- nread = 0;
- va_copy(ap_orig, ap);
- for (;;) {
- c = *fmt++;
- if (c == 0)
- return (nassigned);
- if (isspace_l(c, loc)) {
- while ((fp->_r > 0 || __srefill(fp) == 0) && isspace_l(*fp->_p, loc))
- nread++, fp->_r--, fp->_p++;
- continue;
- }
- if (c != '%') {
- if (fp->_r <= 0 && __srefill(fp))
- goto input_failure;
- goto literal;
- }
- width = 0;
- flags = 0;
- /*
- * switch on the format. continue if done;
- * break once format type is derived.
- */
-again: c = *fmt++;
- switch (c) {
- case '%':
- /* Consume leading white space */
- for(;;) {
- if (fp->_r <= 0 && __srefill(fp))
- goto input_failure;
- if (!isspace_l(*fp->_p, loc))
- break;
- nread++;
- fp->_r--;
- fp->_p++;
- }
-literal:
- if (*fp->_p != c)
- goto match_failure;
- fp->_r--, fp->_p++;
- nread++;
- continue;
-
- case '$':
- index = width;
- if (index < 1 || index > NL_ARGMAX || fmt[-3] != '%') {
- goto input_failure;
- }
- width = 0;
- va_end(ap);
- va_copy(ap, ap_orig); /* reset to %1$ */
- for (; index > 1; index--) {
- va_arg(ap, void*);
- }
- goto again;
- case '*':
- flags |= SUPPRESS;
- goto again;
- case 'j':
- flags |= INTMAXT;
- goto again;
- case 'l':
- if (flags & LONG) {
- flags &= ~LONG;
- flags |= LONGLONG;
- } else
- flags |= LONG;
- goto again;
- case 'q':
- flags |= LONGLONG; /* not quite */
- goto again;
- case 't':
- flags |= PTRDIFFT;
- goto again;
- case 'z':
- flags |= SIZET;
- goto again;
- case 'L':
- flags |= LONGDBL;
- goto again;
- case 'h':
- if (flags & SHORT) {
- flags &= ~SHORT;
- flags |= SHORTSHORT;
- } else
- flags |= SHORT;
- goto again;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- width = width * 10 + c - '0';
- goto again;
-
- /*
- * Conversions.
- */
- case 'd':
- c = CT_INT;
- base = 10;
- break;
-
- case 'i':
- c = CT_INT;
- base = 0;
- break;
-
- case 'o':
- c = CT_INT;
- flags |= UNSIGNED;
- base = 8;
- break;
-
- case 'u':
- c = CT_INT;
- flags |= UNSIGNED;
- base = 10;
- break;
-
- case 'X':
- case 'x':
- flags |= PFXOK; /* enable 0x prefixing */
- c = CT_INT;
- flags |= UNSIGNED;
- base = 16;
- break;
-
-#ifndef NO_FLOATING_POINT
- case 'A': case 'E': case 'F': case 'G':
- case 'a': case 'e': case 'f': case 'g':
- c = CT_FLOAT;
- break;
-#endif
-
- case 'S':
- flags |= LONG;
- /* FALLTHROUGH */
- case 's':
- c = CT_STRING;
- break;
-
- case '[':
- fmt = __sccl(ccltab, fmt, loc);
- flags |= NOSKIP;
- c = CT_CCL;
- break;
-
- case 'C':
- flags |= LONG;
- /* FALLTHROUGH */
- case 'c':
- flags |= NOSKIP;
- c = CT_CHAR;
- break;
-
- case 'p': /* pointer format is like hex */
- flags |= POINTER | PFXOK;
- c = CT_INT; /* assumes sizeof(uintmax_t) */
- flags |= UNSIGNED; /* >= sizeof(uintptr_t) */
- base = 16;
- break;
-
- case 'n':
- {
- if (flags & SUPPRESS) /* ??? */
- continue;
- void *ptr = va_arg(ap, void *);
- if (ptr == NULL) {
- continue;
- } else if (flags & SHORTSHORT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, char, nread);
- } else if (flags & SHORT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, short, nread);
- } else if (flags & LONG) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, long, nread);
- } else if (flags & LONGLONG) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, long long, nread);
- } else if (flags & INTMAXT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, intmax_t, nread);
- } else if (flags & SIZET) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, size_t, nread);
- } else if (flags & PTRDIFFT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, ptrdiff_t, nread);
- } else {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, int, nread);
- }
- continue;
- }
- default:
- goto match_failure;
-
- /*
- * Disgusting backwards compatibility hack. XXX
- */
- case '\0': /* compat */
- return (EOF);
- }
-
- /*
- * We have a conversion that requires input.
- */
- if (fp->_r <= 0 && __srefill(fp))
- goto input_failure;
-
- /*
- * Consume leading white space, except for formats
- * that suppress this.
- */
- if ((flags & NOSKIP) == 0) {
- while (isspace_l(*fp->_p, loc)) {
- nread++;
- if (--fp->_r > 0)
- fp->_p++;
- else if (__srefill(fp))
- goto input_failure;
- }
- /*
- * Note that there is at least one character in
- * the buffer, so conversions that do not set NOSKIP
- * ca no longer result in an input failure.
- */
- }
-
- /*
- * Do the conversion.
- */
- switch (c) {
-
- case CT_CHAR:
- /* scan arbitrary characters (sets NOSKIP) */
- if (width == 0)
- width = 1;
- // libc_hooks: TBD checking of wchar_t
- if (flags & LONG) {
- if ((flags & SUPPRESS) == 0)
- wcp = va_arg(ap, wchar_t *);
- else
- wcp = NULL;
- n = 0;
- while (width != 0) {
- if (n == mb_cur_max) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- buf[n++] = *fp->_p;
- fp->_p++;
- fp->_r--;
- mbs = initial;
- nconv = mbrtowc_l(wcp, buf, n, &mbs, loc);
- if (nconv == (size_t)-1) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- if (nconv == 0 && !(flags & SUPPRESS))
- *wcp = L'\0';
- if (nconv != (size_t)-2) {
- nread += n;
- width--;
- if (!(flags & SUPPRESS))
- wcp++;
- n = 0;
- }
- if (fp->_r <= 0 && __srefill(fp)) {
- if (n != 0) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- break;
- }
- }
- if (!(flags & SUPPRESS))
- nassigned++;
- } else if (flags & SUPPRESS) {
- size_t sum = 0;
- for (;;) {
- if ((n = fp->_r) < width) {
- sum += n;
- width -= n;
- fp->_p += n;
- if (__srefill(fp)) {
- if (sum == 0)
- goto input_failure;
- break;
- }
- } else {
- sum += width;
- fp->_r -= width;
- fp->_p += width;
- break;
- }
- }
- nread += sum;
- } else {
- // libc_hooks: __fread() will validate
- size_t r = __fread((void *)va_arg(ap, char *), 1,
- width, fp);
-
- if (r == 0)
- goto input_failure;
- nread += r;
- nassigned++;
- }
- break;
-
- case CT_CCL:
- /* scan a (nonempty) character class (sets NOSKIP) */
- if (width == 0)
- width = (size_t)~0; /* `infinity' */
- /* take only those things in the class */
- // libsanitiers: TBD checking of wchar_t
- if (flags & LONG) {
- wchar_t twc;
- int nchars;
-
- if ((flags & SUPPRESS) == 0)
- wcp = va_arg(ap, wchar_t *);
- else
- wcp = &twc;
- n = 0;
- nchars = 0;
- while (width != 0) {
- if (n == mb_cur_max) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- buf[n++] = *fp->_p;
- fp->_p++;
- fp->_r--;
- mbs = initial;
- /*
- * Copy the character to destination only
- * after all the checks are completed
- */
- nconv = mbrtowc_l(&twc, buf, n, &mbs, loc);
- if (nconv == (size_t)-1) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- if (nconv == 0)
- twc = L'\0';
- if (nconv != (size_t)-2) {
- if (wctob_l(twc, loc) != EOF &&
- !ccltab[wctob_l(twc, loc)]) {
- while (n != 0) {
- n--;
- __ungetc(buf[n],
- fp);
- }
- break;
- }
- nread += n;
- width--;
- if (!(flags & SUPPRESS)) {
- *wcp = twc;
- wcp++;
- }
- nchars++;
- n = 0;
- }
- if (fp->_r <= 0 && __srefill(fp)) {
- if (n != 0) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- break;
- }
- }
- if (n != 0) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- n = nchars;
- if (n == 0)
- goto match_failure;
- if (!(flags & SUPPRESS)) {
- *wcp = L'\0';
- nassigned++;
- }
- } else if (flags & SUPPRESS) {
- n = 0;
- while (ccltab[*fp->_p]) {
- n++, fp->_r--, fp->_p++;
- if (--width == 0)
- break;
- if (fp->_r <= 0 && __srefill(fp)) {
- if (n == 0)
- goto input_failure;
- break;
- }
- }
- if (n == 0)
- goto match_failure;
- } else {
- p0 = p = va_arg(ap, char *);
- while (ccltab[*fp->_p]) {
- fp->_r--;
- *p++ = *fp->_p++;
- if (--width == 0)
- break;
- if (fp->_r <= 0 && __srefill(fp)) {
- if (p == p0)
- goto input_failure;
- break;
- }
- }
- n = p - p0;
- if (n == 0)
- goto match_failure;
- *p = 0;
- nassigned++;
- // libc_hooks: Doing a post-check for efficiency
- libc_hooks_will_read_cstring(p0);
- }
- nread += n;
- break;
-
- case CT_STRING:
- /* like CCL, but zero-length string OK, & no NOSKIP */
- if (width == 0)
- width = (size_t)~0;
- // libsanitiers: TBD checking of wchar_t
- if (flags & LONG) {
- wchar_t twc;
-
- if ((flags & SUPPRESS) == 0)
- wcp = va_arg(ap, wchar_t *);
- else
- wcp = &twc;
- n = 0;
- while (width != 0) {
- if (n == mb_cur_max) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- buf[n++] = *fp->_p;
- fp->_p++;
- fp->_r--;
- mbs = initial;
- nconv = mbrtowc_l(wcp, buf, n, &mbs, loc);
- if (nconv == (size_t)-1) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- if (nconv == 0)
- *wcp = L'\0';
- if (nconv != (size_t)-2) {
- if (iswspace_l(*wcp, loc)) {
- while (n != 0) {
- n--;
- __ungetc(buf[n],
- fp);
- }
- break;
- }
- nread += n;
- width--;
- if (!(flags & SUPPRESS))
- wcp++;
- n = 0;
- }
- if (fp->_r <= 0 && __srefill(fp)) {
- if (n != 0) {
- fp->_flags |= __SERR;
- goto input_failure;
- }
- break;
- }
- }
- if (!(flags & SUPPRESS)) {
- *wcp = L'\0';
- nassigned++;
- }
- } else if (flags & SUPPRESS) {
- n = 0;
- while (!isspace_l(*fp->_p, loc)) {
- n++, fp->_r--, fp->_p++;
- if (--width == 0)
- break;
- if (fp->_r <= 0 && __srefill(fp))
- break;
- }
- nread += n;
- } else {
- p0 = p = va_arg(ap, char *);
- while (!isspace_l(*fp->_p, loc)) {
- fp->_r--;
- *p++ = *fp->_p++;
- if (--width == 0)
- break;
- if (fp->_r <= 0 && __srefill(fp))
- break;
- }
- *p = 0;
- nread += p - p0;
- nassigned++;
- // libc_hooks: Doing a post-check for efficiency
- libc_hooks_will_read_cstring(p0);
- }
- continue;
-
- case CT_INT:
- /* scan an integer as if by the conversion function */
-#ifdef hardway
- if (width == 0 || width > sizeof(buf) - 1)
- width = sizeof(buf) - 1;
-#else
- /* size_t is unsigned, hence this optimisation */
- if (--width > sizeof(buf) - 2)
- width = sizeof(buf) - 2;
- width++;
-#endif
- flags |= SIGNOK | NDIGITS | NZDIGITS;
- for (p = buf; width; width--) {
- c = *fp->_p;
- /*
- * Switch on the character; `goto ok'
- * if we accept it as a part of number.
- */
- switch (c) {
-
- /*
- * The digit 0 is always legal, but is
- * special. For %i conversions, if no
- * digits (zero or nonzero) have been
- * scanned (only signs), we will have
- * base==0. In that case, we should set
- * it to 8 and enable 0x prefixing.
- * Also, if we have not scanned zero digits
- * before this, do not turn off prefixing
- * (someone else will turn it off if we
- * have scanned any nonzero digits).
- */
- case '0':
- if (base == 0) {
- base = 8;
- flags |= PFXOK;
- }
- if (flags & NZDIGITS)
- flags &= ~(SIGNOK|NZDIGITS|NDIGITS);
- else
- flags &= ~(SIGNOK|PFXOK|NDIGITS);
- goto ok;
-
- /* 1 through 7 always legal */
- case '1': case '2': case '3':
- case '4': case '5': case '6': case '7':
- base = basefix[base];
- flags &= ~(SIGNOK | PFXOK | NDIGITS);
- goto ok;
-
- /* digits 8 and 9 ok iff decimal or hex */
- case '8': case '9':
- base = basefix[base];
- if (base <= 8)
- break; /* not legal here */
- flags &= ~(SIGNOK | PFXOK | NDIGITS);
- goto ok;
-
- /* letters ok iff hex */
- case 'A': case 'B': case 'C':
- case 'D': case 'E': case 'F':
- case 'a': case 'b': case 'c':
- case 'd': case 'e': case 'f':
- /* no need to fix base here */
- if (base <= 10)
- break; /* not legal here */
- flags &= ~(SIGNOK | PFXOK | NDIGITS);
- goto ok;
-
- /* sign ok only as first character */
- case '+': case '-':
- if (flags & SIGNOK) {
- flags &= ~SIGNOK;
- flags |= HAVESIGN;
- goto ok;
- }
- break;
-
- /*
- * x ok iff flag still set & 2nd char (or
- * 3rd char if we have a sign).
- */
- case 'x': case 'X':
- if (flags & PFXOK && p ==
- buf + 1 + !!(flags & HAVESIGN)) {
- base = 16; /* if %i */
- flags &= ~PFXOK;
- goto ok;
- }
- break;
- }
-
- /*
- * If we got here, c is not a legal character
- * for a number. Stop accumulating digits.
- */
- break;
- ok:
- /*
- * c is legal: store it and look at the next.
- */
- *p++ = c;
- if (--fp->_r > 0)
- fp->_p++;
- else if (__srefill(fp))
- break; /* EOF */
- }
- /*
- * If we had only a sign, it is no good; push
- * back the sign. If the number ends in `x',
- * it was [sign] '0' 'x', so push back the x
- * and treat it as [sign] '0'.
- */
- if (flags & NDIGITS) {
- if (p > buf)
- (void) __ungetc(*(u_char *)--p, fp);
- goto match_failure;
- }
- c = ((u_char *)p)[-1];
- if (c == 'x' || c == 'X') {
- --p;
- (void) __ungetc(c, fp);
- }
- if ((flags & SUPPRESS) == 0) {
- uintmax_t res;
-
- *p = 0;
- if ((flags & UNSIGNED) == 0)
- res = strtoimax_l(buf, (char **)NULL, base, loc);
- else
- res = strtoumax_l(buf, (char **)NULL, base, loc);
- void *ptr = va_arg(ap, void *);
- if (flags & POINTER) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, uintptr_t, res);
- } else if (flags & SHORTSHORT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, char, res);
- } else if (flags & SHORT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, short, res);
- } else if (flags & LONG) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, long, res);
- } else if (flags & LONGLONG) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, long long, res);
- } else if (flags & INTMAXT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, intmax_t, res);
- } else if (flags & PTRDIFFT) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, ptrdiff_t, res);
- } else if (flags & SIZET) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, size_t, res);
- } else {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, int, res);
- }
- nassigned++;
- }
- nread += p - buf;
- break;
-
-#ifndef NO_FLOATING_POINT
- case CT_FLOAT:
- {
- char *pbuf;
- /* scan a floating point number as if by strtod */
- if ((width = parsefloat(fp, &pbuf, width, loc)) == 0)
- goto match_failure;
- if ((flags & SUPPRESS) == 0) {
- void *ptr = va_arg(ap, void *);
- if (flags & LONGDBL) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, long double, strtold_l(pbuf, &p, loc));
- } else if (flags & LONG) {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, double, strtod_l(pbuf, &p, loc));
- } else {
- LIBC_HOOKS_WRITE_SIMPLE_TYPE(ptr, float, strtof_l(pbuf, &p, loc));
- }
- nassigned++;
- }
- nread += width;
- break;
- }
-#endif /* !NO_FLOATING_POINT */
- }
- }
-input_failure:
- return (nassigned ? nassigned : EOF);
-match_failure:
- return (nassigned);
-}
-
-int
-__svfscanf(FILE * __restrict fp, const char * __restrict fmt0, va_list ap)
-{
- return __svfscanf_l(fp, __current_locale(), fmt0, ap);
-}
-
-/*
- * Fill in the given table from the scanset at the given format
- * (just after `['). Return a pointer to the character past the
- * closing `]'. The table has a 1 wherever characters should be
- * considered part of the scanset.
- */
-static const u_char *
-__sccl(char *tab, const u_char *fmt, locale_t loc)
-{
- int c, n, v, i;
-
- /* first `clear' the whole table */
- c = *fmt++; /* first char hat => negated scanset */
- if (c == '^') {
- v = 1; /* default => accept */
- c = *fmt++; /* get new first char */
- } else
- v = 0; /* default => reject */
-
- /* XXX: Will not work if sizeof(tab*) > sizeof(char) */
- (void) memset(tab, v, 256);
-
- if (c == 0)
- return (fmt - 1);/* format ended before closing ] */
-
- /*
- * Now set the entries corresponding to the actual scanset
- * to the opposite of the above.
- *
- * The first character may be ']' (or '-') without being special;
- * the last character may be '-'.
- */
- v = 1 - v;
- for (;;) {
- tab[c] = v; /* take character c */
-doswitch:
- n = *fmt++; /* and examine the next */
- switch (n) {
-
- case 0: /* format ended too soon */
- return (fmt - 1);
-
- case '-':
- {
- /*
- * A scanset of the form
- * [01+-]
- * is defined as `the digit 0, the digit 1,
- * the character +, the character -', but
- * the effect of a scanset such as
- * [a-zA-Z0-9]
- * is implementation defined. The V7 Unix
- * scanf treats `a-z' as `the letters a through
- * z', but treats `a-a' as `the letter a, the
- * character -, and the letter a'.
- *
- * For compatibility, the `-' is not considerd
- * to define a range if the character following
- * it is either a close bracket (required by ANSI)
- * or is not numerically greater than the character
- * we just stored in the table (c).
- */
- n = *fmt;
- if (n == ']'
- || (XLOCALE_COLLATE(loc)->__collate_load_error ?
- n < c : __collate_range_cmp (n, c, loc) < 0)) {
- c = '-';
- break; /* resume the for(;;) */
- }
- fmt++;
- /* fill in the range */
- if (XLOCALE_COLLATE(loc)->__collate_load_error) {
- do {
- tab[++c] = v;
- } while (c < n);
- } else {
- for (i = 0; i < 256; i ++)
- if ( __collate_range_cmp (c, i, loc) < 0
- && __collate_range_cmp (i, n, loc) <= 0
- )
- tab[i] = v;
- }
-#if 1 /* XXX another disgusting compatibility hack */
- c = n;
- /*
- * Alas, the V7 Unix scanf also treats formats
- * such as [a-c-e] as `the letters a through e'.
- * This too is permitted by the standard....
- */
- goto doswitch;
-#else
- c = *fmt++;
- if (c == 0)
- return (fmt - 1);
- if (c == ']')
- return (fmt);
-#endif
- break;
- }
- case ']': /* end of scanset */
- return (fmt);
-
- default: /* just another character */
- c = n;
- break;
- }
- }
- /* NOTREACHED */
-}
-
-#ifndef NO_FLOATING_POINT
-/*
- * Maintain a per-thread parsefloat buffer, shared by __svfscanf_l and
- * __vfwscanf.
- */
-#ifdef BUILDING_VARIANT
-extern char *__parsefloat_buf(size_t s);
-#else /* !BUILDING_VARIANT */
-__private_extern__ char *
-__parsefloat_buf(size_t s)
-{
- char *b;
- static pthread_key_t parsefloat_tsd_key = (pthread_key_t)-1;
- static pthread_mutex_t parsefloat_tsd_lock = PTHREAD_MUTEX_INITIALIZER;
- static size_t bsiz = 0;
-
- if (parsefloat_tsd_key == (pthread_key_t)-1) {
- pthread_mutex_lock(&parsefloat_tsd_lock);
- if (parsefloat_tsd_key == (pthread_key_t)-1) {
- parsefloat_tsd_key = __LIBC_PTHREAD_KEY_PARSEFLOAT;
- pthread_key_init_np(parsefloat_tsd_key, free);
- }
- pthread_mutex_unlock(&parsefloat_tsd_lock);
- }
- if ((b = (char *)pthread_getspecific(parsefloat_tsd_key)) == NULL) {
- bsiz = s > BUF ? s : BUF;
- b = (char *)malloc(bsiz);
- if (b == NULL) {
- bsiz = 0;
- return NULL;
- }
- pthread_setspecific(parsefloat_tsd_key, b);
- return b;
- }
- if (s > bsiz) {
- b = (char *)reallocf(b, s);
- pthread_setspecific(parsefloat_tsd_key, b);
- if (b == NULL) {
- bsiz = 0;
- return NULL;
- }
- bsiz = s;
- }
- return b;
-}
-#endif /* BUILDING_VARIANT */
-
-static int
-parsefloat(FILE *fp, char **buf, size_t width, locale_t loc)
-{
- char *commit, *p;
- int infnanpos = 0, decptpos = 0;
- enum {
- S_START, S_GOTSIGN, S_INF, S_NAN, S_DONE, S_MAYBEHEX,
- S_DIGITS, S_DECPT, S_FRAC, S_EXP, S_EXPDIGITS
- } state = S_START;
- unsigned char c;
- const char *decpt = localeconv_l(loc)->decimal_point;
- _Bool gotmantdig = 0, ishex = 0;
- char *b;
- char *e;
- size_t s;
-
- s = (width == 0 ? BUF : (width + 1));
- if ((b = __parsefloat_buf(s)) == NULL) {
- *buf = NULL;
- return 0;
- }
- e = b + (s - 1);
- /*
- * We set commit = p whenever the string we have read so far
- * constitutes a valid representation of a floating point
- * number by itself. At some point, the parse will complete
- * or fail, and we will ungetc() back to the last commit point.
- * To ensure that the file offset gets updated properly, it is
- * always necessary to read at least one character that doesn't
- * match; thus, we can't short-circuit "infinity" or "nan(...)".
- */
- commit = b - 1;
- for (p = b; width == 0 || p < e; ) {
- c = *fp->_p;
-reswitch:
- switch (state) {
- case S_START:
- state = S_GOTSIGN;
- if (c == '-' || c == '+')
- break;
- else
- goto reswitch;
- case S_GOTSIGN:
- switch (c) {
- case '0':
- state = S_MAYBEHEX;
- commit = p;
- break;
- case 'I':
- case 'i':
- state = S_INF;
- break;
- case 'N':
- case 'n':
- state = S_NAN;
- break;
- default:
- state = S_DIGITS;
- goto reswitch;
- }
- break;
- case S_INF:
- if (infnanpos > 6 ||
- (c != "nfinity"[infnanpos] &&
- c != "NFINITY"[infnanpos]))
- goto parsedone;
- if (infnanpos == 1 || infnanpos == 6)
- commit = p; /* inf or infinity */
- infnanpos++;
- break;
- case S_NAN:
- switch (infnanpos) {
- case 0:
- if (c != 'A' && c != 'a')
- goto parsedone;
- break;
- case 1:
- if (c != 'N' && c != 'n')
- goto parsedone;
- else
- commit = p;
- break;
- case 2:
- if (c != '(')
- goto parsedone;
- break;
- default:
- if (c == ')') {
- commit = p;
- state = S_DONE;
- } else if (!isalnum_l(c, loc) && c != '_')
- goto parsedone;
- break;
- }
- infnanpos++;
- break;
- case S_DONE:
- goto parsedone;
- case S_MAYBEHEX:
- state = S_DIGITS;
- if (c == 'X' || c == 'x') {
- ishex = 1;
- break;
- } else { /* we saw a '0', but no 'x' */
- gotmantdig = 1;
- goto reswitch;
- }
- case S_DIGITS:
- if ((ishex && isxdigit_l(c, loc)) || isdigit_l(c, loc)) {
- gotmantdig = 1;
- commit = p;
- break;
- } else {
- state = S_DECPT;
- goto reswitch;
- }
- case S_DECPT:
- if (c == decpt[decptpos]) {
- if (decpt[++decptpos] == '\0') {
- /* We read the complete decpt seq. */
- state = S_FRAC;
- if (gotmantdig)
- commit = p;
- }
- break;
- } else if (!decptpos) {
- /* We didn't read any decpt characters. */
- state = S_FRAC;
- goto reswitch;
- } else {
- /*
- * We read part of a multibyte decimal point,
- * but the rest is invalid, so bail.
- */
- goto parsedone;
- }
- case S_FRAC:
- if (((c == 'E' || c == 'e') && !ishex) ||
- ((c == 'P' || c == 'p') && ishex)) {
- if (!gotmantdig)
- goto parsedone;
- else
- state = S_EXP;
- } else if ((ishex && isxdigit_l(c, loc)) || isdigit_l(c, loc)) {
- commit = p;
- gotmantdig = 1;
- } else
- goto parsedone;
- break;
- case S_EXP:
- state = S_EXPDIGITS;
- if (c == '-' || c == '+')
- break;
- else
- goto reswitch;
- case S_EXPDIGITS:
- if (isdigit_l(c, loc))
- commit = p;
- else
- goto parsedone;
- break;
- default:
- LIBC_ABORT("unknown state %d", state);
- }
- if (p >= e) {
- ssize_t diff = (p - b);
- ssize_t com = (commit - b);
- s += BUF;
- b = __parsefloat_buf(s);
- if (b == NULL) {
- *buf = NULL;
- return 0;
- }
- e = b + (s - 1);
- p = b + diff;
- commit = b + com;
- }
- *p++ = c;
- if (--fp->_r > 0)
- fp->_p++;
- else if (__srefill(fp))
- break; /* EOF */
- }
-
-parsedone:
- while (commit < --p)
- __ungetc(*(u_char *)p, fp);
- *++commit = '\0';
- *buf = b;
- return (commit - b);
-}
-#endif
-#pragma clang diagnostic push