wind_utf8ucs4
ret = wind_utf8ucs4(ds->u.utf8String, name, &len);
ret = wind_utf8ucs4(name, u, &u_len);
ret = wind_utf8ucs4(*s, u, &len);
ret = wind_utf8ucs4(t->utf8_str, u, &len);
return wind_utf8ucs4(in, NULL, out_len);
int wind_utf8ucs4(const char *, uint32_t *, size_t *);