Index: vfwscanf.c
===================================================================
--- vfwscanf.c (revision 55443)
+++ vfwscanf.c (working copy)
@@ -38,6 +38,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/stdio/vfwscanf.c,v 1.17 2009/01/19 06:19:51 das Exp $");
+#include "xlocale_private.h"
+
#include "namespace.h"
#include <ctype.h>
#include <inttypes.h>
@@ -96,7 +98,7 @@
#define CT_FLOAT 4 /* %[efgEFG] conversion */
#ifndef NO_FLOATING_POINT
-static int parsefloat(FILE *, wchar_t *, wchar_t *);
+static int parsefloat(FILE *, wchar_t **, size_t, locale_t loc);
#endif
#define INCCL(_c) \
@@ -115,16 +117,31 @@
FLOCKFILE(fp);
ORIENT(fp, 1);
- ret = __vfwscanf(fp, fmt, ap);
+ ret = __vfwscanf(fp, __current_locale(), fmt, ap);
FUNLOCKFILE(fp);
return (ret);
}
+int
+vfwscanf_l(FILE * __restrict fp, locale_t loc, const wchar_t * __restrict fmt,
+ va_list ap)
+{
+ int ret;
+
+ NORMALIZE_LOCALE(loc);
+ FLOCKFILE(fp);
+ ORIENT(fp, 1);
+ ret = __vfwscanf(fp, loc, fmt, ap);
+ FUNLOCKFILE(fp);
+ return (ret);
+}
+
/*
* Non-MT-safe version.
*/
-int
-__vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, va_list ap)
+__private_extern__ int
+__vfwscanf(FILE * __restrict fp, locale_t loc, const wchar_t * __restrict fmt,
+ va_list ap)
{
wint_t c; /* character from format, or conversion */
size_t width; /* field width, or 0 */
@@ -133,7 +150,6 @@
int flags; /* flags as defined above */
wchar_t *p0; /* saves original value of p when necessary */
int nassigned; /* number of fields assigned */
- int nconversions; /* number of conversions */
int nread; /* number of characters consumed from fp */
int base; /* base argument to conversion function */
wchar_t buf[BUF]; /* buffer for numeric conversions */
@@ -144,30 +160,36 @@
char *mbp; /* multibyte string pointer for %c %s %[ */
size_t nconv; /* number of bytes in mb. conversion */
char mbbuf[MB_LEN_MAX]; /* temporary mb. character buffer */
+ int index; /* for %index$ */
+ va_list ap_orig; /* to reset ap to first argument */
mbstate_t mbs;
+ int mb_cur_max = MB_CUR_MAX_L(loc);
/* `basefix' is used to avoid `if' tests in the integer scanner */
static short basefix[17] =
{ 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
nassigned = 0;
- nconversions = 0;
nread = 0;
ccls = ccle = NULL;
+ va_copy(ap_orig, ap);
for (;;) {
c = *fmt++;
if (c == 0)
return (nassigned);
- if (iswspace(c)) {
- while ((c = __fgetwc(fp)) != WEOF &&
- iswspace(c))
+ if (iswspace_l(c, loc)) {
+ while ((c = __fgetwc(fp, loc)) != WEOF &&
+ iswspace_l(c, loc))
;
if (c != WEOF)
- __ungetwc(c, fp);
+ __ungetwc(c, fp, loc);
continue;
}
- if (c != '%')
+ if (c != '%') {
+ if ((wi = __fgetwc(fp, loc)) == WEOF)
+ goto input_failure;
goto literal;
+ }
width = 0;
flags = 0;
/*
@@ -177,16 +199,34 @@
again: c = *fmt++;
switch (c) {
case '%':
+ /* Consume leading white space */
+ for(;;) {
+ if ((wi = __fgetwc(fp, loc)) == WEOF)
+ goto input_failure;
+ if (!iswspace_l(wi, loc))
+ break;
+ nread++;
+ }
literal:
- if ((wi = __fgetwc(fp)) == WEOF)
- goto input_failure;
if (wi != c) {
- __ungetwc(wi, fp);
- goto input_failure;
+ __ungetwc(wi, fp, loc);
+ goto match_failure;
}
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;
@@ -305,27 +345,28 @@
break;
case 'n':
- nconversions++;
- if (flags & SUPPRESS) /* ??? */
+ {
+ void *ptr = va_arg(ap, void *);
+ if ((ptr == NULL) || (flags & SUPPRESS)) /* ??? */
continue;
- if (flags & SHORTSHORT)
- *va_arg(ap, char *) = nread;
+ 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;
@@ -341,11 +382,11 @@
* that suppress this.
*/
if ((flags & NOSKIP) == 0) {
- while ((wi = __fgetwc(fp)) != WEOF && iswspace(wi))
+ while ((wi = __fgetwc(fp, loc)) != WEOF && iswspace_l(wi, loc))
nread++;
if (wi == WEOF)
goto input_failure;
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
}
/*
@@ -362,7 +403,7 @@
p = va_arg(ap, wchar_t *);
n = 0;
while (width-- != 0 &&
- (wi = __fgetwc(fp)) != WEOF) {
+ (wi = __fgetwc(fp, loc)) != WEOF) {
if (!(flags & SUPPRESS))
*p++ = (wchar_t)wi;
n++;
@@ -378,19 +419,19 @@
n = 0;
mbs = initial_mbs;
while (width != 0 &&
- (wi = __fgetwc(fp)) != WEOF) {
- if (width >= MB_CUR_MAX &&
+ (wi = __fgetwc(fp, loc)) != WEOF) {
+ if (width >= mb_cur_max &&
!(flags & SUPPRESS)) {
- nconv = wcrtomb(mbp, wi, &mbs);
+ nconv = wcrtomb_l(mbp, wi, &mbs, loc);
if (nconv == (size_t)-1)
goto input_failure;
} else {
- nconv = wcrtomb(mbbuf, wi,
- &mbs);
+ nconv = wcrtomb_l(mbbuf, wi,
+ &mbs, loc);
if (nconv == (size_t)-1)
goto input_failure;
if (nconv > width) {
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
break;
}
if (!(flags & SUPPRESS))
@@ -408,7 +449,6 @@
if (!(flags & SUPPRESS))
nassigned++;
}
- nconversions++;
break;
case CT_CCL:
@@ -418,20 +458,20 @@
/* take only those things in the class */
if ((flags & SUPPRESS) && (flags & LONG)) {
n = 0;
- while ((wi = __fgetwc(fp)) != WEOF &&
+ while ((wi = __fgetwc(fp, loc)) != WEOF &&
width-- != 0 && INCCL(wi))
n++;
if (wi != WEOF)
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
if (n == 0)
goto match_failure;
} else if (flags & LONG) {
p0 = p = va_arg(ap, wchar_t *);
- while ((wi = __fgetwc(fp)) != WEOF &&
+ while ((wi = __fgetwc(fp, loc)) != WEOF &&
width-- != 0 && INCCL(wi))
*p++ = (wchar_t)wi;
if (wi != WEOF)
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
n = p - p0;
if (n == 0)
goto match_failure;
@@ -442,16 +482,16 @@
mbp = va_arg(ap, char *);
n = 0;
mbs = initial_mbs;
- while ((wi = __fgetwc(fp)) != WEOF &&
+ while ((wi = __fgetwc(fp, loc)) != WEOF &&
width != 0 && INCCL(wi)) {
- if (width >= MB_CUR_MAX &&
+ if (width >= mb_cur_max &&
!(flags & SUPPRESS)) {
- nconv = wcrtomb(mbp, wi, &mbs);
+ nconv = wcrtomb_l(mbp, wi, &mbs, loc);
if (nconv == (size_t)-1)
goto input_failure;
} else {
- nconv = wcrtomb(mbbuf, wi,
- &mbs);
+ nconv = wcrtomb_l(mbbuf, wi,
+ &mbs, loc);
if (nconv == (size_t)-1)
goto input_failure;
if (nconv > width)
@@ -466,14 +506,15 @@
n++;
}
if (wi != WEOF)
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
+ if (n == 0)
+ goto match_failure;
if (!(flags & SUPPRESS)) {
*mbp = 0;
nassigned++;
}
}
nread += n;
- nconversions++;
break;
case CT_STRING:
@@ -481,39 +522,39 @@
if (width == 0)
width = (size_t)~0;
if ((flags & SUPPRESS) && (flags & LONG)) {
- while ((wi = __fgetwc(fp)) != WEOF &&
+ while ((wi = __fgetwc(fp, loc)) != WEOF &&
width-- != 0 &&
- !iswspace(wi))
+ !iswspace_l(wi, loc))
nread++;
if (wi != WEOF)
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
} else if (flags & LONG) {
p0 = p = va_arg(ap, wchar_t *);
- while ((wi = __fgetwc(fp)) != WEOF &&
+ while ((wi = __fgetwc(fp, loc)) != WEOF &&
width-- != 0 &&
- !iswspace(wi)) {
+ !iswspace_l(wi, loc)) {
*p++ = (wchar_t)wi;
nread++;
}
if (wi != WEOF)
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
*p = '\0';
nassigned++;
} else {
if (!(flags & SUPPRESS))
mbp = va_arg(ap, char *);
mbs = initial_mbs;
- while ((wi = __fgetwc(fp)) != WEOF &&
+ while ((wi = __fgetwc(fp, loc)) != WEOF &&
width != 0 &&
- !iswspace(wi)) {
- if (width >= MB_CUR_MAX &&
+ !iswspace_l(wi, loc)) {
+ if (width >= mb_cur_max &&
!(flags & SUPPRESS)) {
- nconv = wcrtomb(mbp, wi, &mbs);
+ nconv = wcrtomb_l(mbp, wi, &mbs, loc);
if (nconv == (size_t)-1)
goto input_failure;
} else {
- nconv = wcrtomb(mbbuf, wi,
- &mbs);
+ nconv = wcrtomb_l(mbbuf, wi,
+ &mbs, loc);
if (nconv == (size_t)-1)
goto input_failure;
if (nconv > width)
@@ -528,13 +569,12 @@
nread++;
}
if (wi != WEOF)
- __ungetwc(wi, fp);
+ __ungetwc(wi, fp, loc);
if (!(flags & SUPPRESS)) {
*mbp = 0;
nassigned++;
}
}
- nconversions++;
continue;
case CT_INT:
@@ -544,7 +584,7 @@
width = sizeof(buf) / sizeof(*buf) - 1;
flags |= SIGNOK | NDIGITS | NZDIGITS;
for (p = buf; width; width--) {
- c = __fgetwc(fp);
+ c = __fgetwc(fp, loc);
/*
* Switch on the character; `goto ok'
* if we accept it as a part of number.
@@ -628,7 +668,7 @@
* for a number. Stop accumulating digits.
*/
if (c != WEOF)
- __ungetwc(c, fp);
+ __ungetwc(c, fp, loc);
break;
ok:
/*
@@ -644,22 +684,22 @@
*/
if (flags & NDIGITS) {
if (p > buf)
- __ungetwc(*--p, fp);
+ __ungetwc(*--p, fp, loc);
goto match_failure;
}
c = p[-1];
if (c == 'x' || c == 'X') {
--p;
- __ungetwc(c, fp);
+ __ungetwc(c, fp, loc);
}
if ((flags & SUPPRESS) == 0) {
uintmax_t res;
*p = 0;
if ((flags & UNSIGNED) == 0)
- res = wcstoimax(buf, NULL, base);
+ res = wcstoimax_l(buf, NULL, base, loc);
else
- res = wcstoumax(buf, NULL, base);
+ res = wcstoumax_l(buf, NULL, base, loc);
if (flags & POINTER)
*va_arg(ap, void **) =
(void *)(uintptr_t)res;
@@ -682,45 +722,45 @@
nassigned++;
}
nread += p - buf;
- nconversions++;
break;
#ifndef NO_FLOATING_POINT
case CT_FLOAT:
+ {
+ wchar_t *pbuf;
/* scan a floating point number as if by strtod */
- if (width == 0 || width > sizeof(buf) /
- sizeof(*buf) - 1)
- width = sizeof(buf) / 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 = wcstold(buf, &p);
+ long double res = wcstold_l(pbuf, &p, loc);
*va_arg(ap, long double *) = res;
} else if (flags & LONG) {
- double res = wcstod(buf, &p);
+ double res = wcstod_l(pbuf, &p, loc);
*va_arg(ap, double *) = res;
} else {
- float res = wcstof(buf, &p);
+ float res = wcstof_l(pbuf, &p, loc);
*va_arg(ap, float *) = res;
}
nassigned++;
}
nread += width;
- nconversions++;
break;
+ }
#endif /* !NO_FLOATING_POINT */
}
}
input_failure:
- return (nconversions != 0 ? nassigned : EOF);
+ return (nassigned ? nassigned : EOF);
match_failure:
return (nassigned);
}
#ifndef NO_FLOATING_POINT
+extern char *__parsefloat_buf(size_t s); /* see vfscanf-fbsd.c */
+
static int
-parsefloat(FILE *fp, wchar_t *buf, wchar_t *end)
+parsefloat(FILE *fp, wchar_t **buf, size_t width, locale_t loc)
{
mbstate_t mbs;
size_t nconv;
@@ -733,12 +773,22 @@
wchar_t c;
wchar_t decpt;
_Bool gotmantdig = 0, ishex = 0;
+ wchar_t *b;
+ wchar_t *e;
+ size_t s;
mbs = initial_mbs;
- nconv = mbrtowc(&decpt, localeconv()->decimal_point, MB_CUR_MAX, &mbs);
+
+ nconv = mbrtowc_l(&decpt, localeconv()->decimal_point, MB_CUR_MAX_L(loc), &mbs, loc);
if (nconv == (size_t)-1 || nconv == (size_t)-2)
- decpt = '.'; /* failsafe */
+ decpt = '.'; /* failsafe */
+ s = (width == 0 ? BUF : (width + 1));
+ if ((b = (wchar_t *)__parsefloat_buf(s * sizeof(wchar_t))) == 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
@@ -748,10 +798,10 @@
* always necessary to read at least one character that doesn't
* match; thus, we can't short-circuit "infinity" or "nan(...)".
*/
- commit = buf - 1;
+ commit = b - 1;
c = WEOF;
- for (p = buf; p < end; ) {
- if ((c = __fgetwc(fp)) == WEOF)
+ for (p = b; width == 0 || p < e; ) {
+ if ((c = __fgetwc(fp, loc)) == WEOF)
break;
reswitch:
switch (state) {
@@ -809,7 +859,7 @@
if (c == ')') {
commit = p;
state = S_DONE;
- } else if (!iswalnum(c) && c != '_')
+ } else if (!iswalnum_l(c, loc) && c != '_')
goto parsedone;
break;
}
@@ -827,7 +877,7 @@
goto reswitch;
}
case S_DIGITS:
- if ((ishex && iswxdigit(c)) || iswdigit(c))
+ if ((ishex && iswxdigit_l(c, loc)) || iswdigit_l(c, loc))
gotmantdig = 1;
else {
state = S_FRAC;
@@ -844,7 +894,7 @@
goto parsedone;
else
state = S_EXP;
- } else if ((ishex && iswxdigit(c)) || iswdigit(c)) {
+ } else if ((ishex && iswxdigit_l(c, loc)) || iswdigit_l(c, loc)) {
commit = p;
gotmantdig = 1;
} else
@@ -857,24 +907,38 @@
else
goto reswitch;
case S_EXPDIGITS:
- if (iswdigit(c))
+ if (iswdigit_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 = (wchar_t *)__parsefloat_buf(s * sizeof(wchar_t));
+ if (b == NULL) {
+ *buf = NULL;
+ return 0;
+ }
+ e = b + (s - 1);
+ p = b + diff;
+ commit = b + com;
+ }
*p++ = c;
c = WEOF;
}
parsedone:
if (c != WEOF)
- __ungetwc(c, fp);
+ __ungetwc(c, fp, loc);
while (commit < --p)
- __ungetwc(*p, fp);
+ __ungetwc(*p, fp, loc);
*++commit = '\0';
- return (commit - buf);
+ *buf = b;
+ return (commit - b);
}
#endif