-#include <stdio.h>
+#include "stdio_impl.h"
#include <string.h>
-#include <ctype.h>
-#include "__scanf.h"
-
-static void s_read(rctx_t *r)
+static size_t string_read(FILE *f, unsigned char *buf, size_t len)
{
- unsigned char *s = r->opaque;
- if (!s[r->l]) r->c = -1;
- else r->c = s[r->l++];
+ char *src = f->cookie;
+ size_t k = len+256;
+ char *end = memchr(src, 0, k);
+ if (end) k = end-src;
+ if (k < len) len = k;
+ memcpy(buf, src, len);
+ f->rpos = (void *)(src+len);
+ f->rend = (void *)(src+k);
+ f->cookie = src+k;
+ return len;
}
-int vsscanf(const char *s, const char *fmt, va_list ap)
+int vsscanf(const char *restrict s, const char *restrict fmt, va_list ap)
{
- size_t l = strlen(fmt), i;
- wchar_t fmt2[l+1];
- rctx_t r = { s_read, (void *)s, 0, isspace };
- for (i=0; i<=l; i++) fmt2[i] = (unsigned char)fmt[i];
- return __scanf(&r, fmt2, ap);
+ FILE f = {
+ .buf = (void *)s, .cookie = (void *)s,
+ .read = string_read, .lock = -1
+ };
+ return vfscanf(&f, fmt, ap);
}
+
+weak_alias(vsscanf,__isoc99_vsscanf);