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#include <stdio.h> #include <string.h> #include <errno.h> #include <ctype.h> #include "stdio_impl.h" #include "__scanf.h" static void f_read(rctx_t *r) { FILE *f = r->opaque; if ((r->c = getc_unlocked(f)) >= 0) r->l++; } int vfscanf(FILE *f, const char *fmt, va_list ap) { size_t l = strlen(fmt), i, result; rctx_t r = { f_read, (void *)f, 0, isspace }; wchar_t fmt2[l+1]; if (l > 0x100000) { errno = ENOMEM; return -1; } for (i=0; i<=l; i++) fmt2[i] = (unsigned char)fmt[i]; FLOCK(f); result = __scanf(&r, fmt2, ap); if (r.u && r.c >= 0) ungetc(r.c, f); FUNLOCK(f); return result; } |