#include "stdio_impl.h"
-#include "libc.h"
+#include <string.h>
-static size_t do_read(FILE *f, unsigned char *buf, size_t len)
+static size_t string_read(FILE *f, unsigned char *buf, size_t len)
{
- return __string_read(f, buf, len);
+ 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 *restrict s, const char *restrict fmt, va_list ap)
{
FILE f = {
.buf = (void *)s, .cookie = (void *)s,
- .read = do_read, .lock = -1
+ .read = string_read, .lock = -1
};
return vfscanf(&f, fmt, ap);
}