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';
130 if (*p == 'h') p++, size = SIZE_hh;
134 if (*p == 'l') p++, size = SIZE_ll;
147 case 'd': case 'i': case 'o': case 'u': case 'x':
148 case 'a': case 'e': case 'f': case 'g':
149 case 'A': case 'E': case 'F': case 'G': case 'X':
150 case 's': case 'c': case '[':
169 if (width < 1) width = 1;
173 store_int(dest, size, pos);
174 /* do not increment match count, etc! */
178 while (isspace(shgetc(f)));
184 if (shgetc(f) < 0) goto input_fail;
191 if (t == 'c' || t == 's') {
192 memset(scanset, -1, sizeof scanset);
203 if (*++p == '^') p++, invert = 1;
205 memset(scanset, invert, sizeof scanset);
207 if (*p == '-') p++, scanset[1+'-'] = 1-invert;
208 else if (*p == ']') p++, scanset[1+']'] = 1-invert;
209 for (; *p != ']'; p++) {
210 if (!*p) goto fmt_fail;
211 if (*p=='-' && p[1] && p[1] != ']')
212 for (c=p++[-1]; c<*p; c++)
213 scanset[1+c] = 1-invert;
214 scanset[1+*p] = 1-invert;
220 k = t=='c' ? width+1U : 31;
221 if (size == SIZE_l) {
223 wcs = malloc(k*sizeof(wchar_t));
224 if (!wcs) goto alloc_fail;
229 while (scanset[(c=shgetc(f))+1]) {
230 switch (mbrtowc(&wc, &(char){c}, 1, &st)) {
236 if (wcs) wcs[i++] = wc;
239 wchar_t *tmp = realloc(wcs, k*sizeof(wchar_t));
240 if (!tmp) goto alloc_fail;
244 if (!mbsinit(&st)) goto input_fail;
247 if (!s) goto alloc_fail;
248 while (scanset[(c=shgetc(f))+1]) {
252 char *tmp = realloc(s, k);
253 if (!tmp) goto alloc_fail;
257 } else if ((s = dest)) {
258 while (scanset[(c=shgetc(f))+1])
261 while (scanset[(c=shgetc(f))+1]);
264 if (!shcnt(f)) goto match_fail;
265 if (t == 'c' && shcnt(f) != width) goto match_fail;
267 if (size == SIZE_l) *(wchar_t **)dest = wcs;
268 else *(char **)dest = s;
290 x = __intscan(f, base, 0, ULLONG_MAX);
291 if (!shcnt(f)) goto match_fail;
292 if (t=='p' && dest) *(void **)dest = (void *)(uintptr_t)x;
293 else store_int(dest, size, x);
299 y = __floatscan(f, size, 0);
300 if (!shcnt(f)) goto match_fail;
301 if (dest) switch (size) {
309 *(long double *)dest = y;
322 if (!matches) matches--;