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486 lines
13 KiB
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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#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#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#test">test</a></li></ul></li></ul><h3><a href="global.html">Global</a></h3>
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<h1 class="page-title">parser.js</h1>
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<section>
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<article>
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<pre class="prettyprint source linenums"><code>import browserParsersList from './parser-browsers';
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import osParsersList from './parser-os';
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import platformParsersList from './parser-platforms';
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import enginesParsersList from './parser-engines';
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import { compareVersions } from './utils';
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/**
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* The main class that arranges the whole parsing process.
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*/
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class Parser {
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/**
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* Create instance of Parser
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*
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* @param {String} UA User-Agent string
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* @param {Boolean} [skipParsing=false] parser can skip parsing in purpose of performance
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* improvements if you need to make a more particular parsing
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* like {@link Parser#parseBrowser} or {@link Parser#parsePlatform}
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*
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* @throw {Error} in case of empty UA String
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*
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* @constructor
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*/
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constructor(UA, skipParsing = false) {
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if (UA === void (0) || UA === null || UA === '') {
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throw new Error("UserAgent parameter can't be empty");
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}
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this._ua = UA;
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/**
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* @typedef ParsedResult
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* @property {Object} browser
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* @property {String} [browser.name]
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* @property {String} [browser.version]
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* @property {Object} os
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* @property {String} [os.name]
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* @property {String} [os.version]
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* @property {String} [os.versionName]
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* @property {Object} platform
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* @property {String} [platform.type]
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* @property {String} [platform.vendor]
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* @property {String} [platform.model]
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* @property {Object} engine
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* @property {String} [engine.name]
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* @property {String} [engine.version]
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*/
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this.parsedResult = {};
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if (skipParsing !== true) {
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this.parse();
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}
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}
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/**
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* Get UserAgent string of current Parser instance
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* @return {String} User-Agent String of the current <Parser> object
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*
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* @public
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*/
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getUA() {
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return this._ua;
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}
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/**
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* Test a UA string for a regexp
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* @param {RegExp} regex
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* @return {Boolean}
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*/
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test(regex) {
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return regex.test(this._ua);
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}
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/**
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* Get parsed browser object
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* @return {Object}
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*/
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parseBrowser() {
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this.parsedResult.browser = {};
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const browserDescriptor = browserParsersList.find((_browser) => {
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if (typeof _browser.test === 'function') {
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return _browser.test(this);
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}
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if (_browser.test instanceof Array) {
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return _browser.test.some(condition => this.test(condition));
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}
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throw new Error("Browser's test function is not valid");
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});
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if (browserDescriptor) {
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this.parsedResult.browser = browserDescriptor.describe(this.getUA());
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}
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return this.parsedResult.browser;
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}
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/**
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* Get parsed browser object
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* @return {Object}
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*
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* @public
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*/
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getBrowser() {
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if (this.parsedResult.browser) {
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return this.parsedResult.browser;
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}
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return this.parseBrowser();
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}
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/**
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* Get browser's name
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* @return {String} Browser's name or an empty string
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*
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* @public
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*/
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getBrowserName(toLowerCase) {
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if (toLowerCase) {
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return String(this.getBrowser().name).toLowerCase() || '';
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}
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return this.getBrowser().name || '';
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}
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/**
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* Get browser's version
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* @return {String} version of browser
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*
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* @public
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*/
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getBrowserVersion() {
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return this.getBrowser().version;
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}
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/**
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* Get OS
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* @return {Object}
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*
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* @example
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* this.getOS();
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* {
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* name: 'macOS',
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* version: '10.11.12'
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* }
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*/
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getOS() {
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if (this.parsedResult.os) {
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return this.parsedResult.os;
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}
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return this.parseOS();
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}
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/**
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* Parse OS and save it to this.parsedResult.os
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* @return {*|{}}
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*/
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parseOS() {
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this.parsedResult.os = {};
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const os = osParsersList.find((_os) => {
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if (typeof _os.test === 'function') {
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return _os.test(this);
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}
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if (_os.test instanceof Array) {
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return _os.test.some(condition => this.test(condition));
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}
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throw new Error("Browser's test function is not valid");
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});
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if (os) {
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this.parsedResult.os = os.describe(this.getUA());
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}
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return this.parsedResult.os;
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}
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/**
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* Get OS name
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* @param {Boolean} [toLowerCase] return lower-cased value
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* @return {String} name of the OS — macOS, Windows, Linux, etc.
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*/
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getOSName(toLowerCase) {
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const { name } = this.getOS();
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if (toLowerCase) {
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return String(name).toLowerCase() || '';
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}
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return name || '';
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}
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/**
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* Get OS version
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* @return {String} full version with dots ('10.11.12', '5.6', etc)
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*/
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getOSVersion() {
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return this.getOS().version;
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}
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/**
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* Get parsed platform
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* @return {{}}
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*/
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getPlatform() {
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if (this.parsedResult.platform) {
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return this.parsedResult.platform;
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}
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return this.parsePlatform();
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}
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/**
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* Get platform name
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* @param {Boolean} [toLowerCase=false]
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* @return {*}
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*/
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getPlatformType(toLowerCase = false) {
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const { type } = this.getPlatform();
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if (toLowerCase) {
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return String(type).toLowerCase() || '';
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}
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return type || '';
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}
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/**
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* Get parsed platform
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* @return {{}}
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*/
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parsePlatform() {
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this.parsedResult.platform = {};
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const platform = platformParsersList.find((_platform) => {
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if (typeof _platform.test === 'function') {
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return _platform.test(this);
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}
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if (_platform.test instanceof Array) {
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return _platform.test.some(condition => this.test(condition));
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}
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throw new Error("Browser's test function is not valid");
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});
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if (platform) {
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this.parsedResult.platform = platform.describe(this.getUA());
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}
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return this.parsedResult.platform;
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}
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/**
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* Get parsed engine
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* @return {{}}
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*/
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getEngine() {
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if (this.parsedResult.engine) {
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return this.parsedResult.engine;
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}
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return this.parseEngine();
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}
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/**
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* Get parsed platform
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* @return {{}}
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*/
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parseEngine() {
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this.parsedResult.engine = {};
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const engine = enginesParsersList.find((_engine) => {
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if (typeof _engine.test === 'function') {
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return _engine.test(this);
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}
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if (_engine.test instanceof Array) {
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return _engine.test.some(condition => this.test(condition));
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}
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throw new Error("Browser's test function is not valid");
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});
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if (engine) {
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this.parsedResult.engine = engine.describe(this.getUA());
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}
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return this.parsedResult.engine;
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}
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/**
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* Parse full information about the browser
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*/
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parse() {
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this.parseBrowser();
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this.parseOS();
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this.parsePlatform();
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this.parseEngine();
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return this;
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}
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/**
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* Get parsed result
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* @return {ParsedResult}
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*/
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getResult() {
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/* TODO: Make this function pure, return a new object instead of the reference */
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return this.parsedResult;
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}
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/**
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* Check if parsed browser matches certain conditions
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*
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* @param {Object} checkTree It's one or two layered object,
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* which can include a platform or an OS on the first layer
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* and should have browsers specs on the bottom-laying layer
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*
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* @returns {Boolean|undefined} Whether the browser satisfies the set conditions or not.
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* Returns `undefined` when the browser is no described in the checkTree object.
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*
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* @example
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* const browser = new Bowser(UA);
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* if (browser.check({chrome: '>118.01.1322' }))
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* // or with os
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* if (browser.check({windows: { chrome: '>118.01.1322' } }))
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* // or with platforms
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* if (browser.check({desktop: { chrome: '>118.01.1322' } }))
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*/
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satisfies(checkTree) {
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const platformsAndOSes = {};
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let platformsAndOSCounter = 0;
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const browsers = {};
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let browsersCounter = 0;
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const allDefinitions = Object.keys(checkTree);
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allDefinitions.forEach((key) => {
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const currentDefinition = checkTree[key];
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if (typeof currentDefinition === 'string') {
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browsers[key] = currentDefinition;
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browsersCounter += 1;
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} else if (typeof currentDefinition === 'object') {
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platformsAndOSes[key] = currentDefinition;
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platformsAndOSCounter += 1;
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}
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});
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if (platformsAndOSCounter > 0) {
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const platformsAndOSNames = Object.keys(platformsAndOSes);
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const OSMatchingDefinition = platformsAndOSNames.find(name => (this.isOS(name)));
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if (OSMatchingDefinition) {
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const osResult = this.satisfies(platformsAndOSes[OSMatchingDefinition]);
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if (osResult !== void 0) {
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return osResult;
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}
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}
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const platformMatchingDefinition = platformsAndOSNames.find(name => (this.isPlatform(name)));
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if (platformMatchingDefinition) {
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const platformResult = this.satisfies(platformsAndOSes[platformMatchingDefinition]);
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if (platformResult !== void 0) {
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return platformResult;
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}
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}
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}
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if (browsersCounter > 0) {
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const browserNames = Object.keys(browsers);
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const matchingDefinition = browserNames.find(name => (this.isBrowser(name)));
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if (matchingDefinition !== void 0) {
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return this.compareVersion(browsers[matchingDefinition]);
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}
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}
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return undefined;
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}
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isBrowser(browserName) {
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return this.getBrowserName(true) === String(browserName).toLowerCase();
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}
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compareVersion(version) {
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let expectedResult = 0;
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let comparableVersion = version;
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if (version[0] === '>') {
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expectedResult = 1;
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comparableVersion = version.substr(1);
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} else if (version[0] === '<') {
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expectedResult = -1;
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comparableVersion = version.substr(1);
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} else if (version[0] === '=') {
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comparableVersion = version.substr(1);
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}
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return compareVersions(this.getBrowserVersion(), comparableVersion) === expectedResult;
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}
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isOS(osName) {
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return this.getOSName(true) === String(osName).toLowerCase();
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}
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isPlatform(platformType) {
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return this.getPlatformType(true) === String(platformType).toLowerCase();
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}
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/**
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* Is anything? Check if the browser is called "anything",
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* the OS called "anything" or the platform called "anything"
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* @param {String} anything
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* @returns {Boolean}
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*/
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is(anything) {
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return this.isBrowser(anything) || this.isOS(anything) || this.isPlatform(anything);
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}
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}
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export default Parser;
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</code></pre>
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</article>
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</section>
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<br class="clear">
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<footer>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sun Jul 08 2018 12:09:12 GMT+0300 (EEST) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme.
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