13 #include "stdio_impl.h"
16 #include "floatscan.h"
25 static void store_int(void *dest, int size, unsigned long long i)
42 *(long long *)dest = i;
47 static void *arg_n(va_list ap, unsigned int n)
53 for (i=n; i>1; i--) va_arg(ap2, void *);
54 p = va_arg(ap2, void *);
59 int vfscanf(FILE *restrict f, const char *restrict fmt, va_list ap)
65 const unsigned char *p;
76 unsigned char scanset[257];
82 for (p=(const unsigned char *)fmt; *p; p++) {
87 while (isspace(p[1])) p++;
89 while (isspace(shgetc(f)));
94 if (*p != '%' || p[1] == '%') {
100 if (c<0) goto input_fail;
110 } else if (isdigit(*p) && p[1]=='$') {
111 dest = arg_n(ap, *p-'0'); p+=2;
113 dest = va_arg(ap, void *);
116 for (width=0; isdigit(*p); p++) {
117 width = 10*width + *p - '0';
132 if (*p == 'h') p++, size = SIZE_hh;
136 if (*p == 'l') p++, size = SIZE_ll;
149 case 'd': case 'i': case 'o': case 'u': case 'x':
150 case 'a': case 'e': case 'f': case 'g':
151 case 'A': case 'E': case 'F': case 'G': case 'X':
152 case 's': case 'c': case '[':
171 if (width < 1) width = 1;
175 store_int(dest, size, pos);
176 /* do not increment match count, etc! */
180 while (isspace(shgetc(f)));
186 if (shgetc(f) < 0) goto input_fail;
193 if (t == 'c' || t == 's') {
194 memset(scanset, -1, sizeof scanset);
205 if (*++p == '^') p++, invert = 1;
207 memset(scanset, invert, sizeof scanset);
209 if (*p == '-') p++, scanset[1+'-'] = 1-invert;
210 else if (*p == ']') p++, scanset[1+']'] = 1-invert;
211 for (; *p != ']'; p++) {
212 if (!*p) goto fmt_fail;
213 if (*p=='-' && p[1] && p[1] != ']')
214 for (c=p++[-1]; c<*p; c++)
215 scanset[1+c] = 1-invert;
216 scanset[1+*p] = 1-invert;
222 k = t=='c' ? width+1U : 31;
223 if (size == SIZE_l) {
225 wcs = malloc(k*sizeof(wchar_t));
226 if (!wcs) goto alloc_fail;
231 while (scanset[(c=shgetc(f))+1]) {
232 switch (mbrtowc(&wc, &(char){c}, 1, &st)) {
238 if (wcs) wcs[i++] = wc;
241 wchar_t *tmp = realloc(wcs, k*sizeof(wchar_t));
242 if (!tmp) goto alloc_fail;
246 if (!mbsinit(&st)) goto input_fail;
249 if (!s) goto alloc_fail;
250 while (scanset[(c=shgetc(f))+1]) {
254 char *tmp = realloc(s, k);
255 if (!tmp) goto alloc_fail;
259 } else if ((s = dest)) {
260 while (scanset[(c=shgetc(f))+1])
263 while (scanset[(c=shgetc(f))+1]);
266 if (!shcnt(f)) goto match_fail;
267 if (t == 'c' && shcnt(f) != width) goto match_fail;
269 if (size == SIZE_l) *(wchar_t **)dest = wcs;
270 else *(char **)dest = s;
292 x = __intscan(f, base, 0, ULLONG_MAX);
293 if (!shcnt(f)) goto match_fail;
294 if (t=='p' && dest) *(void **)dest = (void *)(uintptr_t)x;
295 else store_int(dest, size, x);
301 y = __floatscan(f, size, 0);
302 if (!shcnt(f)) goto match_fail;
303 if (dest) switch (size) {
311 *(long double *)dest = y;
324 if (!matches) matches--;