int
vswscanf(const wchar_t* s, const wchar_t* fmt, va_list args)
{
Sfio_t f;
if (!s)
return -1;
/*
* make a fake stream
*/
SFCLEAR(&f, NiL);
f.flags = SF_STRING|SF_READ;
f.bits = SF_PRIVATE;
f.mode = SF_READ;
f.size = wcslen(s) * sizeof(wchar_t);
f.data = f.next = f.endw = (uchar*)s;
f.endb = f.endr = f.data + f.size;
/*
* sfio does the rest
*/
return vfwscanf(&f, fmt, args);
}
int
vswprintf(wchar_t* s, size_t n, const wchar_t* fmt, va_list args)
{
Sfio_t f;
int v;
if (!s)
return -1;
/*
* make a fake stream
*/
SFCLEAR(&f, NiL);
f.flags = SF_STRING|SF_WRITE;
f.bits = SF_PRIVATE;
f.mode = SF_WRITE;
f.size = n - 1;
f.data = f.next = f.endr = (uchar*)s;
f.endb = f.endw = f.data + f.size;
/*
* call and adjust
*/
v = vfwprintf(&f, fmt, args);
*f.next = 0;
_Sfi = f.next - f.data;
return v;
}
int sfvsscanf(const char *s, const char *form, va_list args) {
Sfio_t f;
if (!s || !form) return -1;
/* make a fake stream */
SFCLEAR(&f, NULL);
f.flags = SF_STRING | SF_READ;
f.bits = SF_PRIVATE;
f.mode = SF_READ;
f.size = strlen((char *)s);
f.data = f.next = f.endw = (uchar *)s;
f.endb = f.endr = f.data + f.size;
return sfvscanf(&f, form, args);
}
