You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
775 B
27 lines
775 B
/**
|
|
* Convert array of 16 byte values to UUID string format of the form:
|
|
* XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
|
|
*/
|
|
var byteToHex = [];
|
|
for (var i = 0; i < 256; ++i) {
|
|
byteToHex[i] = (i + 0x100).toString(16).substr(1);
|
|
}
|
|
|
|
function bytesToUuid(buf, offset) {
|
|
var i = offset || 0;
|
|
var bth = byteToHex;
|
|
// join used to fix memory issue caused by concatenation: https://bugs.chromium.org/p/v8/issues/detail?id=3175#c4
|
|
return ([
|
|
bth[buf[i++]], bth[buf[i++]],
|
|
bth[buf[i++]], bth[buf[i++]], '-',
|
|
bth[buf[i++]], bth[buf[i++]], '-',
|
|
bth[buf[i++]], bth[buf[i++]], '-',
|
|
bth[buf[i++]], bth[buf[i++]], '-',
|
|
bth[buf[i++]], bth[buf[i++]],
|
|
bth[buf[i++]], bth[buf[i++]],
|
|
bth[buf[i++]], bth[buf[i++]]
|
|
]).join('');
|
|
}
|
|
|
|
module.exports = bytesToUuid;
|