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