28 lines
593 B
C
28 lines
593 B
C
#include "stdio_impl.h"
|
|
#include <string.h>
|
|
|
|
static size_t string_read(FILE *f, unsigned char *buf, size_t 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 = string_read, .lock = -1
|
|
};
|
|
return vfscanf(&f, fmt, ap);
|
|
}
|
|
|
|
weak_alias(vsscanf,__isoc99_vsscanf);
|