* 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
* 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.
* 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 1.32 2003/06/28 09:03:05 das Exp $");
+__FBSDID("$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 <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"
-#define FLOATING_POINT
-
-#ifdef FLOATING_POINT
+#ifndef NO_FLOATING_POINT
#include <locale.h>
#endif
#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_INT 3 /* %[dioupxX] conversion */
#define CT_FLOAT 4 /* %[efgEFG] conversion */
-static const u_char *__sccl(char *, const u_char *);
-static int parsefloat(FILE *, char *, char *);
-
-int __scanfdebug = 0;
+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 *fp, char const *fmt0, va_list ap)
+__vfscanf(FILE * __restrict fp, char const * __restrict fmt0, va_list ap)
{
int ret;
FLOCKFILE(fp);
- ret = __svfscanf(fp, fmt0, ap);
+ 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;
+
+ NORMALIZE_LOCALE(loc);
+ FLOCKFILE(fp);
+ ret = __svfscanf_l(fp, loc, fmt0, ap);
FUNLOCKFILE(fp);
return (ret);
}
/*
* __svfscanf - non-MT-safe version of __vfscanf
*/
-int
-__svfscanf(FILE *fp, const char *fmt0, va_list ap)
+__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 */
int flags; /* flags as defined above */
char *p0; /* saves original value of p when necessary */
int nassigned; /* number of fields assigned */
- int nconversions; /* number of conversions */
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 */
- wchar_t *wcp0; /* saves original value of wcp */
- mbstate_t mbs; /* multibyte conversion state */
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 short basefix[17] =
+ static const short basefix[17] =
{ 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
+ NORMALIZE_LOCALE(loc);
+ mb_cur_max = MB_CUR_MAX_L(loc);
ORIENT(fp, -1);
nassigned = 0;
- nconversions = 0;
nread = 0;
+ va_copy(ap_orig, ap);
for (;;) {
c = *fmt++;
if (c == 0)
return (nassigned);
- if (isspace(c)) {
- while ((fp->_r > 0 || __srefill(fp) == 0) && isspace(*fp->_p))
+ 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 (c != '%') {
+ if (fp->_r <= 0 && __srefill(fp))
+ goto input_failure;
goto literal;
+ }
width = 0;
flags = 0;
/*
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->_r <= 0 && __srefill(fp))
- goto input_failure;
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;
base = 16;
break;
-#ifdef FLOATING_POINT
+#ifndef NO_FLOATING_POINT
case 'A': case 'E': case 'F': case 'G':
case 'a': case 'e': case 'f': case 'g':
c = CT_FLOAT;
break;
case '[':
- fmt = __sccl(ccltab, fmt);
+ fmt = __sccl(ccltab, fmt, loc);
flags |= NOSKIP;
c = CT_CCL;
break;
break;
case 'n':
- nconversions++;
+ {
if (flags & SUPPRESS) /* ??? */
continue;
- if (flags & SHORTSHORT)
- *va_arg(ap, char *) = nread;
+ void *ptr = va_arg(ap, void *);
+ if (ptr == NULL)
+ continue;
+ else if (flags & SHORTSHORT)
+ *(char *)ptr = nread;
else if (flags & SHORT)
- *va_arg(ap, short *) = nread;
+ *(short *)ptr = nread;
else if (flags & LONG)
- *va_arg(ap, long *) = nread;
+ *(long *)ptr = nread;
else if (flags & LONGLONG)
- *va_arg(ap, long long *) = nread;
+ *(long long *)ptr = nread;
else if (flags & INTMAXT)
- *va_arg(ap, intmax_t *) = nread;
+ *(intmax_t *)ptr = nread;
else if (flags & SIZET)
- *va_arg(ap, size_t *) = nread;
+ *(size_t *)ptr = nread;
else if (flags & PTRDIFFT)
- *va_arg(ap, ptrdiff_t *) = nread;
+ *(ptrdiff_t *)ptr = nread;
else
- *va_arg(ap, int *) = nread;
+ *(int *)ptr = nread;
continue;
-
+ }
default:
goto match_failure;
* that suppress this.
*/
if ((flags & NOSKIP) == 0) {
- while (isspace(*fp->_p)) {
+ while (isspace_l(*fp->_p, loc)) {
nread++;
if (--fp->_r > 0)
fp->_p++;
wcp = NULL;
n = 0;
while (width != 0) {
- if (n == MB_CUR_MAX) {
+ if (n == mb_cur_max) {
fp->_flags |= __SERR;
goto input_failure;
}
buf[n++] = *fp->_p;
fp->_p++;
fp->_r--;
- memset(&mbs, 0, sizeof(mbs));
- nconv = mbrtowc(wcp, buf, n, &mbs);
+ mbs = initial;
+ nconv = mbrtowc_l(wcp, buf, n, &mbs, loc);
if (nconv == (size_t)-1) {
fp->_flags |= __SERR;
goto input_failure;
}
nread += sum;
} else {
- size_t r = fread((void *)va_arg(ap, char *), 1,
+ size_t r = __fread((void *)va_arg(ap, char *), 1,
width, fp);
if (r == 0)
nread += r;
nassigned++;
}
- nconversions++;
break;
case CT_CCL:
int nchars;
if ((flags & SUPPRESS) == 0)
- wcp = wcp0 = va_arg(ap, wchar_t *);
+ wcp = va_arg(ap, wchar_t *);
else
- wcp = wcp0 = &twc;
+ wcp = &twc;
n = 0;
nchars = 0;
while (width != 0) {
- if (n == MB_CUR_MAX) {
+ if (n == mb_cur_max) {
fp->_flags |= __SERR;
goto input_failure;
}
buf[n++] = *fp->_p;
fp->_p++;
fp->_r--;
- memset(&mbs, 0, sizeof(mbs));
- nconv = mbrtowc(wcp, buf, n, &mbs);
+ 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 (wctob(*wcp) != EOF &&
- !ccltab[wctob(*wcp)]) {
+ if (wctob_l(*wcp, loc) != EOF &&
+ !ccltab[wctob_l(*wcp, loc)]) {
while (n != 0) {
n--;
__ungetc(buf[n],
nassigned++;
}
nread += n;
- nconversions++;
break;
case CT_STRING:
else
wcp = &twc;
n = 0;
- while (!isspace(*fp->_p) && width != 0) {
- if (n == MB_CUR_MAX) {
+ while (width != 0) {
+ if (n == mb_cur_max) {
fp->_flags |= __SERR;
goto input_failure;
}
buf[n++] = *fp->_p;
fp->_p++;
fp->_r--;
- memset(&mbs, 0, sizeof(mbs));
- nconv = mbrtowc(wcp, buf, n, &mbs);
+ 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(*wcp)) {
+ if (iswspace_l(*wcp, loc)) {
while (n != 0) {
n--;
__ungetc(buf[n],
}
} else if (flags & SUPPRESS) {
n = 0;
- while (!isspace(*fp->_p)) {
+ while (!isspace_l(*fp->_p, loc)) {
n++, fp->_r--, fp->_p++;
if (--width == 0)
break;
nread += n;
} else {
p0 = p = va_arg(ap, char *);
- while (!isspace(*fp->_p)) {
+ while (!isspace_l(*fp->_p, loc)) {
fp->_r--;
*p++ = *fp->_p++;
if (--width == 0)
nread += p - p0;
nassigned++;
}
- nconversions++;
continue;
case CT_INT:
case '+': case '-':
if (flags & SIGNOK) {
flags &= ~SIGNOK;
+ flags |= HAVESIGN;
goto ok;
}
break;
-
- /* x ok iff flag still set & 2nd char */
+
+ /*
+ * 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) {
+ if (flags & PFXOK && p ==
+ buf + 1 + !!(flags & HAVESIGN)) {
base = 16; /* if %i */
flags &= ~PFXOK;
goto ok;
*p = 0;
if ((flags & UNSIGNED) == 0)
- res = strtoimax(buf, (char **)NULL, base);
+ res = strtoimax_l(buf, (char **)NULL, base, loc);
else
- res = strtoumax(buf, (char **)NULL, base);
+ res = strtoumax_l(buf, (char **)NULL, base, loc);
if (flags & POINTER)
*va_arg(ap, void **) =
(void *)(uintptr_t)res;
nassigned++;
}
nread += p - buf;
- nconversions++;
break;
-#ifdef FLOATING_POINT
+#ifndef NO_FLOATING_POINT
case CT_FLOAT:
+ {
+ char *pbuf;
/* scan a floating point number as if by strtod */
- if (width == 0 || width > sizeof(buf) - 1)
- width = sizeof(buf) - 1;
- if ((width = parsefloat(fp, buf, buf + width)) == 0)
+ if ((width = parsefloat(fp, &pbuf, width, loc)) == 0)
goto match_failure;
if ((flags & SUPPRESS) == 0) {
if (flags & LONGDBL) {
- long double res = strtold(buf, &p);
+ long double res = strtold_l(pbuf, &p, loc);
*va_arg(ap, long double *) = res;
} else if (flags & LONG) {
- double res = strtod(buf, &p);
+ double res = strtod_l(pbuf, &p, loc);
*va_arg(ap, double *) = res;
} else {
- float res = strtof(buf, &p);
+ float res = strtof_l(pbuf, &p, loc);
*va_arg(ap, float *) = res;
}
- if (__scanfdebug && p - buf != width)
- abort();
nassigned++;
}
nread += width;
- nconversions++;
break;
-#endif /* FLOATING_POINT */
+ }
+#endif /* !NO_FLOATING_POINT */
}
}
input_failure:
- return (nconversions != 0 ? nassigned : EOF);
+ 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
* considered part of the scanset.
*/
static const u_char *
-__sccl(tab, fmt)
+__sccl(tab, fmt, loc)
char *tab;
const u_char *fmt;
+ locale_t loc;
{
int c, n, v, i;
return (fmt - 1);
case '-':
+ {
/*
* A scanset of the form
* [01+-]
*/
n = *fmt;
if (n == ']'
- || (__collate_load_error ? n < c :
- __collate_range_cmp (n, c) < 0
+ || (loc->__collate_load_error ? n < c :
+ __collate_range_cmp (n, c, loc) < 0
)
) {
c = '-';
}
fmt++;
/* fill in the range */
- if (__collate_load_error) {
+ if (loc->__collate_load_error) {
do {
tab[++c] = v;
} while (c < n);
} else {
for (i = 0; i < 256; i ++)
- if ( __collate_range_cmp (c, i) < 0
- && __collate_range_cmp (i, n) <= 0
+ if ( __collate_range_cmp (c, i, loc) < 0
+ && __collate_range_cmp (i, n, loc) <= 0
)
tab[i] = v;
}
return (fmt);
#endif
break;
-
+ }
case ']': /* end of scanset */
return (fmt);
/* NOTREACHED */
}
-#ifdef FLOATING_POINT
+#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, char *end)
+parsefloat(FILE *fp, char **buf, size_t width, locale_t loc)
{
char *commit, *p;
- int infnanpos = 0;
+ int infnanpos = 0, decptpos = 0;
enum {
- S_START, S_GOTSIGN, S_INF, S_NAN, S_MAYBEHEX,
- S_DIGITS, S_FRAC, S_EXP, S_EXPDIGITS
+ 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;
- char decpt = *localeconv()->decimal_point;
+ 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
* always necessary to read at least one character that doesn't
* match; thus, we can't short-circuit "infinity" or "nan(...)".
*/
- commit = buf - 1;
- for (p = buf; p < end; ) {
+ commit = b - 1;
+ for (p = b; width == 0 || p < e; ) {
c = *fp->_p;
reswitch:
switch (state) {
break;
case S_NAN:
switch (infnanpos) {
- case -1: /* XXX kludge to deal with nan(...) */
- goto parsedone;
case 0:
if (c != 'A' && c != 'a')
goto parsedone;
default:
if (c == ')') {
commit = p;
- infnanpos = -2;
- } else if (!isalnum(c) && c != '_')
+ 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') {
goto reswitch;
}
case S_DIGITS:
- if (ishex && isxdigit(c) || isdigit(c))
+ if ((ishex && isxdigit_l(c, loc)) || isdigit_l(c, loc)) {
gotmantdig = 1;
- else {
+ 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;
- if (c != decpt)
- goto reswitch;
+ goto reswitch;
+ } else {
+ /*
+ * We read part of a multibyte decimal point,
+ * but the rest is invalid, so bail.
+ */
+ goto parsedone;
}
- if (gotmantdig)
- commit = p;
- break;
case S_FRAC:
- if ((c == 'E' || c == 'e') && !ishex ||
- (c == 'P' || c == 'p') && ishex) {
+ if (((c == 'E' || c == 'e') && !ishex) ||
+ ((c == 'P' || c == 'p') && ishex)) {
if (!gotmantdig)
goto parsedone;
else
state = S_EXP;
- } else if (ishex && isxdigit(c) || isdigit(c)) {
+ } else if ((ishex && isxdigit_l(c, loc)) || isdigit_l(c, loc)) {
commit = p;
gotmantdig = 1;
} else
else
goto reswitch;
case S_EXPDIGITS:
- if (isdigit(c))
+ if (isdigit_l(c, loc))
commit = p;
else
goto parsedone;
break;
default:
- abort();
+ 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)
while (commit < --p)
__ungetc(*(u_char *)p, fp);
*++commit = '\0';
- return (commit - buf);
+ *buf = b;
+ return (commit - b);
}
#endif
+#pragma clang diagnostic push
projects / apple / libc.git / blobdiff