| module.exports = function () { |
| var s = [], itoh = '0123456789ABCDEF'; |
| |
| // Make array of random hex digits. The UUID only has 32 digits in it, but we |
| // allocate an extra items to make room for the '-'s we'll be inserting. |
| for (var i = 0; i <36; i++) s[i] = Math.floor(Math.random()*0x10); |
| |
| // Conform to RFC-4122, section 4.4 |
| s[14] = 4; // Set 4 high bits of time_high field to version |
| s[19] = (s[19] & 0x3) | 0x8; // Specify 2 high bits of clock sequence |
| |
| // Convert to hex chars |
| for (var i = 0; i <36; i++) s[i] = itoh[s[i]]; |
| |
| // Insert '-'s |
| s[8] = s[13] = s[18] = s[23] = '-'; |
| |
| return s.join(''); |
| } |
