import rng from './rng.js'; | |
import stringify from './stringify.js'; | |
function v4(options, buf, offset) { | |
options = options || {}; | |
var rnds = options.random || (options.rng || rng)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved` | |
rnds[6] = rnds[6] & 0x0f | 0x40; | |
rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided | |
if (buf) { | |
offset = offset || 0; | |
for (var i = 0; i < 16; ++i) { | |
buf[offset + i] = rnds[i]; | |
} | |
return buf; | |
} | |
return stringify(rnds); | |
} | |
export default v4; |