40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
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/**
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* UUID operations.
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*
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* @namespace
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*/
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var UUID = {
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/**
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* Generate UUID operation.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run_generate_v4: function(input, args) {
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if (typeof(window.crypto) !== 'undefined' && typeof(window.crypto.getRandomValues) !== 'undefined') {
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var buf = new Uint32Array(4),
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i = 0;
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window.crypto.getRandomValues(buf);
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return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function(c) {
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var r = (buf[i >> 3] >> ((i % 8) * 4)) & 0xf,
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v = c === "x" ? r : (r & 0x3 | 0x8);
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i++;
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return v.toString(16);
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});
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} else {
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return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function(c) {
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var r = Math.random() * 16 | 0,
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v = c === "x" ? r : (r & 0x3 | 0x8);
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return v.toString(16);
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});
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}
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},
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};
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