#include "shgetc.h"
#include "intscan.h"
#include "floatscan.h"
+#include "libc.h"
#define SIZE_hh -2
#define SIZE_h -1
((f)->rend && (c)<128U ? *--(f)->rpos : ungetwc((c),(f)))
#endif
-int vfwscanf(FILE *f, const wchar_t *fmt, va_list ap)
+int vfwscanf(FILE *restrict f, const wchar_t *restrict fmt, va_list ap)
{
int width;
int size;
off_t pos = 0, cnt;
static const char size_pfx[][3] = { "hh", "h", "", "l", "L", "ll" };
char tmp[3*sizeof(int)+10];
+ const wchar_t *set;
+ size_t i, k;
FLOCK(f);
for (p=fmt; *p; p++) {
+ alloc = 0;
+
if (iswspace(*p)) {
while (iswspace(p[1])) p++;
while (iswspace((c=getwc(f)))) pos++;
}
if (*p=='m') {
- alloc = 1;
+ alloc = !!dest;
p++;
} else {
alloc = 0;
t = *p;
- /* Transform ls,lc -> S,C */
- if (size==SIZE_l && (t&15)==3) t&=~32;
+ /* Transform S,C -> ls,lc */
+ if ((t&0x2f)==3) {
+ size = SIZE_l;
+ t |= 32;
+ }
if (t != 'n') {
if (t != '[' && (t|32) != 'c')
/* do not increment match count, etc! */
continue;
- case 'c':
- if (width < 1) width = 1;
- s = dest;
- for (; width && (c=getwc(f)) >= 0; width--) {
- int l = wctomb(s?s:tmp, c);
- if (l<0) goto input_fail;
- if (s) s+=l;
- pos++;
- }
- if (width) goto match_fail;
- break;
-
- case 'C':
- if (width < 1) width = 1;
- wcs = dest;
- for (; width && (c=getwc(f)) >= 0; width--)
- pos++, wcs && (*wcs++ = c);
- if (width) goto match_fail;
- break;
-
case 's':
- if (width < 1) width = -1;
- s = dest;
- while (width && !iswspace(c=getwc(f)) && c!=EOF) {
- int l = wctomb(s?s:tmp, c);
- if (l<0) goto input_fail;
- if (s) s+=l;
- pos++;
- width-=(width>0);
+ case 'c':
+ case '[':
+ if (t == 'c') {
+ if (width<1) width = 1;
+ invert = 1;
+ set = L"";
+ } else if (t == 's') {
+ invert = 1;
+ set = (const wchar_t[]){
+ ' ', '\t', '\n', '\r', 11, 12, 0x0085,
+ 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005,
+ 0x2006, 0x2008, 0x2009, 0x200a,
+ 0x2028, 0x2029, 0x205f, 0x3000, 0 };
+ } else {
+ if (*++p == '^') p++, invert = 1;
+ else invert = 0;
+ set = p;
+ if (*p==']') p++;
+ while (*p!=']') {
+ if (!*p) goto fmt_fail;
+ p++;
+ }
}
- if (width) ungetwc(c, f);
- if (s) *s = 0;
- break;
- case 'S':
- wcs = dest;
- if (width < 1) width = -1;
- while (width && !iswspace(c=getwc(f)) && c!=EOF)
- width-=(width>0), pos++, *wcs++ = c;
- if (width) ungetwc(c, f);
- if (wcs) *wcs = 0;
- break;
-
- case '[':
s = (size == SIZE_def) ? dest : 0;
wcs = (size == SIZE_l) ? dest : 0;
- if (*++p == '^') p++, invert = 1;
- else invert = 0;
-
int gotmatch = 0;
if (width < 1) width = -1;
+ i = 0;
+ if (alloc) {
+ k = t=='c' ? width+1U : 31;
+ if (size == SIZE_l) {
+ wcs = malloc(k*sizeof(wchar_t));
+ if (!wcs) goto alloc_fail;
+ } else {
+ s = malloc(k);
+ if (!s) goto alloc_fail;
+ }
+ }
while (width) {
if ((c=getwc(f))<0) break;
- if (in_set(p, c) == invert)
+ if (in_set(set, c) == invert)
break;
if (wcs) {
- *wcs++ = c;
+ wcs[i++] = c;
+ if (alloc && i==k) {
+ k += k+1;
+ wchar_t *tmp = realloc(wcs, k*sizeof(wchar_t));
+ if (!tmp) goto alloc_fail;
+ wcs = tmp;
+ }
} else if (size != SIZE_l) {
- int l = wctomb(s?s:tmp, c);
+ int l = wctomb(s?s+i:tmp, c);
if (l<0) goto input_fail;
- if (s) s+=l;
+ i += l;
+ if (alloc && i > k-4) {
+ k += k+1;
+ char *tmp = realloc(s, k);
+ if (!tmp) goto alloc_fail;
+ s = tmp;
+ }
}
pos++;
width-=(width>0);
gotmatch=1;
}
- if (width) ungetwc(c, f);
-
- if (!gotmatch) goto match_fail;
-
- if (*p==']') p++;
- while (*p!=']') {
- if (!*p) goto fmt_fail;
- p++;
+ if (width) {
+ ungetwc(c, f);
+ if (t == 'c' || !gotmatch) goto match_fail;
}
- if (wcs) *wcs++ = 0;
- if (s) *s++ = 0;
+ if (alloc) {
+ if (size == SIZE_l) *(wchar_t **)dest = wcs;
+ else *(char **)dest = s;
+ }
+ if (t != 'c') {
+ if (wcs) wcs[i] = 0;
+ if (s) s[i] = 0;
+ }
break;
case 'd': case 'i': case 'o': case 'u': case 'x':
}
if (0) {
fmt_fail:
+alloc_fail:
input_fail:
if (!matches) matches--;
- }
match_fail:
+ if (alloc) {
+ free(s);
+ free(wcs);
+ }
+ }
FUNLOCK(f);
return matches;
}
+
+weak_alias(vfwscanf,__isoc99_vfwscanf);
projects / musl / blobdiff