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272 lines
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<title>utils.js - Documentation</title>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Bowser.html">Bowser</a><ul class='methods'><li data-type='method'><a href="Bowser.html#.getParser">getParser</a></li><li data-type='method'><a href="Bowser.html#.parse">parse</a></li></ul></li><li><a href="Parser.html">Parser</a><ul class='methods'><li data-type='method'><a href="Parser.html#getBrowser">getBrowser</a></li><li data-type='method'><a href="Parser.html#getBrowserName">getBrowserName</a></li><li data-type='method'><a href="Parser.html#getBrowserVersion">getBrowserVersion</a></li><li data-type='method'><a href="Parser.html#getEngine">getEngine</a></li><li data-type='method'><a href="Parser.html#getEngineName">getEngineName</a></li><li data-type='method'><a href="Parser.html#getOS">getOS</a></li><li data-type='method'><a href="Parser.html#getOSName">getOSName</a></li><li data-type='method'><a href="Parser.html#getOSVersion">getOSVersion</a></li><li data-type='method'><a href="Parser.html#getPlatform">getPlatform</a></li><li data-type='method'><a href="Parser.html#getPlatformType">getPlatformType</a></li><li data-type='method'><a href="Parser.html#getResult">getResult</a></li><li data-type='method'><a href="Parser.html#getUA">getUA</a></li><li data-type='method'><a href="Parser.html#is">is</a></li><li data-type='method'><a href="Parser.html#isBrowser">isBrowser</a></li><li data-type='method'><a href="Parser.html#parse">parse</a></li><li data-type='method'><a href="Parser.html#parseBrowser">parseBrowser</a></li><li data-type='method'><a href="Parser.html#parseEngine">parseEngine</a></li><li data-type='method'><a href="Parser.html#parseOS">parseOS</a></li><li data-type='method'><a href="Parser.html#parsePlatform">parsePlatform</a></li><li data-type='method'><a href="Parser.html#satisfies">satisfies</a></li><li data-type='method'><a href="Parser.html#some">some</a></li><li data-type='method'><a href="Parser.html#test">test</a></li></ul></li></ul><h3>Global</h3><ul><li><a href="global.html#getAndroidVersionName">getAndroidVersionName</a></li><li><a href="global.html#getBrowserAlias">getBrowserAlias</a></li><li><a href="global.html#getFirstMatch">getFirstMatch</a></li><li><a href="global.html#getSecondMatch">getSecondMatch</a></li><li><a href="global.html#getVersionPrecision">getVersionPrecision</a></li><li><a href="global.html#map">map</a></li><li><a href="global.html#matchAndReturnConst">matchAndReturnConst</a></li></ul>
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<div id="main">
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<h1 class="page-title">utils.js</h1>
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<section>
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<article>
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<pre class="prettyprint source linenums"><code>import { BROWSER_ALIASES_MAP } from './constants.js';
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export default class Utils {
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/**
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* Get first matched item for a string
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* @param {RegExp} regexp
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* @param {String} ua
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* @return {Array|{index: number, input: string}|*|boolean|string}
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*/
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static getFirstMatch(regexp, ua) {
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const match = ua.match(regexp);
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return (match && match.length > 0 && match[1]) || '';
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}
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/**
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* Get second matched item for a string
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* @param regexp
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* @param {String} ua
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* @return {Array|{index: number, input: string}|*|boolean|string}
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*/
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static getSecondMatch(regexp, ua) {
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const match = ua.match(regexp);
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return (match && match.length > 1 && match[2]) || '';
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}
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/**
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* Match a regexp and return a constant or undefined
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* @param {RegExp} regexp
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* @param {String} ua
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* @param {*} _const Any const that will be returned if regexp matches the string
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* @return {*}
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*/
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static matchAndReturnConst(regexp, ua, _const) {
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if (regexp.test(ua)) {
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return _const;
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}
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return void (0);
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}
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static getWindowsVersionName(version) {
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switch (version) {
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case 'NT': return 'NT';
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case 'XP': return 'XP';
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case 'NT 5.0': return '2000';
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case 'NT 5.1': return 'XP';
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case 'NT 5.2': return '2003';
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case 'NT 6.0': return 'Vista';
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case 'NT 6.1': return '7';
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case 'NT 6.2': return '8';
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case 'NT 6.3': return '8.1';
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case 'NT 10.0': return '10';
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default: return undefined;
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}
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}
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/**
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* Get Android version name
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* 1.5 - Cupcake
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* 1.6 - Donut
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* 2.0 - Eclair
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* 2.1 - Eclair
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* 2.2 - Froyo
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* 2.x - Gingerbread
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* 3.x - Honeycomb
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* 4.0 - Ice Cream Sandwich
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* 4.1 - Jelly Bean
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* 4.4 - KitKat
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* 5.x - Lollipop
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* 6.x - Marshmallow
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* 7.x - Nougat
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* 8.x - Oreo
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* 9.x - ?
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*
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* @example
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* getAndroidVersionName("7.0") // 'Nougat'
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*
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* @param {string} version
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* @return {string} versionName
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*/
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static getAndroidVersionName(version) {
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const v = version.split('.').splice(0, 2).map(s => parseInt(s, 10) || 0);
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v.push(0);
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if (v[0] === 1 && v[1] < 5) return undefined;
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if (v[0] === 1 && v[1] < 6) return 'Cupcake';
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if (v[0] === 1 && v[1] >= 6) return 'Donut';
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if (v[0] === 2 && v[1] < 2) return 'Eclair';
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if (v[0] === 2 && v[1] === 2) return 'Froyo';
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if (v[0] === 2 && v[1] > 2) return 'Gingerbread';
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if (v[0] === 3) return 'Honeycomb';
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if (v[0] === 4 && v[1] < 1) return 'Ice Cream Sandwich';
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if (v[0] === 4 && v[1] < 4) return 'Jelly Bean';
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if (v[0] === 4 && v[1] >= 4) return 'KitKat';
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if (v[0] === 5) return 'Lollipop';
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if (v[0] === 6) return 'Marshmallow';
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if (v[0] === 7) return 'Nougat';
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if (v[0] === 8) return 'Oreo';
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return undefined;
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}
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/**
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* Get version precisions count
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*
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* @example
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* getVersionPrecision("1.10.3") // 3
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*
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* @param {string} version
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* @return {number}
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*/
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static getVersionPrecision(version) {
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return version.split('.').length;
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}
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/**
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* Calculate browser version weight
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*
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* @example
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* compareVersions('1.10.2.1', '1.8.2.1.90') // 1
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* compareVersions('1.010.2.1', '1.09.2.1.90'); // 1
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* compareVersions('1.10.2.1', '1.10.2.1'); // 0
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* compareVersions('1.10.2.1', '1.0800.2'); // -1
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* compareVersions('1.10.2.1', '1.10', true); // 0
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*
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* @param {String} versionA versions versions to compare
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* @param {String} versionB versions versions to compare
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* @param {boolean} [isLoose] enable loose comparison
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* @return {Number} comparison result: -1 when versionA is lower,
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* 1 when versionA is bigger, 0 when both equal
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*/
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/* eslint consistent-return: 1 */
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static compareVersions(versionA, versionB, isLoose = false) {
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// 1) get common precision for both versions, for example for "10.0" and "9" it should be 2
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const versionAPrecision = Utils.getVersionPrecision(versionA);
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const versionBPrecision = Utils.getVersionPrecision(versionB);
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let precision = Math.max(versionAPrecision, versionBPrecision);
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let lastPrecision = 0;
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const chunks = Utils.map([versionA, versionB], (version) => {
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const delta = precision - Utils.getVersionPrecision(version);
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// 2) "9" -> "9.0" (for precision = 2)
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const _version = version + new Array(delta + 1).join('.0');
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// 3) "9.0" -> ["000000000"", "000000009"]
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return Utils.map(_version.split('.'), chunk => new Array(20 - chunk.length).join('0') + chunk).reverse();
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});
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// adjust precision for loose comparison
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if (isLoose) {
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lastPrecision = precision - Math.min(versionAPrecision, versionBPrecision);
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}
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// iterate in reverse order by reversed chunks array
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precision -= 1;
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while (precision >= lastPrecision) {
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// 4) compare: "000000009" > "000000010" = false (but "9" > "10" = true)
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if (chunks[0][precision] > chunks[1][precision]) {
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return 1;
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}
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if (chunks[0][precision] === chunks[1][precision]) {
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if (precision === lastPrecision) {
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// all version chunks are same
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return 0;
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}
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precision -= 1;
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} else if (chunks[0][precision] < chunks[1][precision]) {
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return -1;
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}
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}
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}
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/**
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* Array::map polyfill
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*
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* @param {Array} arr
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* @param {Function} iterator
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* @return {Array}
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*/
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static map(arr, iterator) {
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const result = [];
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let i;
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if (Array.prototype.map) {
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return Array.prototype.map.call(arr, iterator);
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}
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for (i = 0; i < arr.length; i += 1) {
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result.push(iterator(arr[i]));
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}
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return result;
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}
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/**
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* Get short version/alias for a browser name
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*
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* @example
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* getBrowserAlias('Microsoft Edge') // edge
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*
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* @param {string} browserName
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* @return {string}
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*/
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static getBrowserAlias(browserName) {
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return BROWSER_ALIASES_MAP[browserName];
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}
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}
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</code></pre>
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</article>
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</section>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sun Apr 14 2019 13:45:42 GMT+0300 (EEST) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme.
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