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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#assign" > assign< / a > < / li > < li > < a href = "global.html#find" > find< / a > < / li > < li > < a href = "global.html#getAndroidVersionName" > getAndroidVersionName< / a > < / li > < li > < a href = "global.html#getBrowserAlias" > getBrowserAlias< / a > < / li > < li > < a href = "global.html#getBrowserTypeByAlias" > getBrowserTypeByAlias< / a > < / li > < li > < a href = "global.html#getFirstMatch" > getFirstMatch< / a > < / li > < li > < a href = "global.html#getMacOSVersionName" > getMacOSVersionName< / 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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< pre class = "prettyprint source linenums" > < code > import browserParsersList from './parser-browsers.js';
import osParsersList from './parser-os.js';
import platformParsersList from './parser-platforms.js';
import enginesParsersList from './parser-engines.js';
import Utils from './utils.js';
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/**
* The main class that arranges the whole parsing process.
*/
class Parser {
/**
* Create instance of Parser
*
* @param {String} UA User-Agent string
* @param {Boolean} [skipParsing=false] parser can skip parsing in purpose of performance
* improvements if you need to make a more particular parsing
* like {@link Parser#parseBrowser} or {@link Parser#parsePlatform}
*
* @throw {Error} in case of empty UA String
*
* @constructor
*/
constructor(UA, skipParsing = false) {
if (UA === void (0) || UA === null || UA === '') {
throw new Error("UserAgent parameter can't be empty");
}
this._ua = UA;
/**
* @typedef ParsedResult
* @property {Object} browser
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* @property {String|undefined} [browser.name]
* Browser name, like `"Chrome"` or `"Internet Explorer"`
* @property {String|undefined} [browser.version] Browser version as a String `"12.01.45334.10"`
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* @property {Object} os
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* @property {String|undefined} [os.name] OS name, like `"Windows"` or `"macOS"`
* @property {String|undefined} [os.version] OS version, like `"NT 5.1"` or `"10.11.1"`
* @property {String|undefined} [os.versionName] OS name, like `"XP"` or `"High Sierra"`
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* @property {Object} platform
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* @property {String|undefined} [platform.type]
* platform type, can be either `"desktop"`, `"tablet"` or `"mobile"`
* @property {String|undefined} [platform.vendor] Vendor of the device,
* like `"Apple"` or `"Samsung"`
* @property {String|undefined} [platform.model] Device model,
* like `"iPhone"` or `"Kindle Fire HD 7"`
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* @property {Object} engine
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* @property {String|undefined} [engine.name]
* Can be any of this: `WebKit`, `Blink`, `Gecko`, `Trident`, `Presto`, `EdgeHTML`
* @property {String|undefined} [engine.version] String version of the engine
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*/
this.parsedResult = {};
if (skipParsing !== true) {
this.parse();
}
}
/**
* Get UserAgent string of current Parser instance
* @return {String} User-Agent String of the current < Parser> object
*
* @public
*/
getUA() {
return this._ua;
}
/**
* Test a UA string for a regexp
* @param {RegExp} regex
* @return {Boolean}
*/
test(regex) {
return regex.test(this._ua);
}
/**
* Get parsed browser object
* @return {Object}
*/
parseBrowser() {
this.parsedResult.browser = {};
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const browserDescriptor = Utils.find(browserParsersList, (_browser) => {
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if (typeof _browser.test === 'function') {
return _browser.test(this);
}
if (_browser.test instanceof Array) {
return _browser.test.some(condition => this.test(condition));
}
throw new Error("Browser's test function is not valid");
});
if (browserDescriptor) {
this.parsedResult.browser = browserDescriptor.describe(this.getUA());
}
return this.parsedResult.browser;
}
/**
* Get parsed browser object
* @return {Object}
*
* @public
*/
getBrowser() {
if (this.parsedResult.browser) {
return this.parsedResult.browser;
}
return this.parseBrowser();
}
/**
* Get browser's name
* @return {String} Browser's name or an empty string
*
* @public
*/
getBrowserName(toLowerCase) {
if (toLowerCase) {
return String(this.getBrowser().name).toLowerCase() || '';
}
return this.getBrowser().name || '';
}
/**
* Get browser's version
* @return {String} version of browser
*
* @public
*/
getBrowserVersion() {
return this.getBrowser().version;
}
/**
* Get OS
* @return {Object}
*
* @example
* this.getOS();
* {
* name: 'macOS',
* version: '10.11.12'
* }
*/
getOS() {
if (this.parsedResult.os) {
return this.parsedResult.os;
}
return this.parseOS();
}
/**
* Parse OS and save it to this.parsedResult.os
* @return {*|{}}
*/
parseOS() {
this.parsedResult.os = {};
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const os = Utils.find(osParsersList, (_os) => {
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if (typeof _os.test === 'function') {
return _os.test(this);
}
if (_os.test instanceof Array) {
return _os.test.some(condition => this.test(condition));
}
throw new Error("Browser's test function is not valid");
});
if (os) {
this.parsedResult.os = os.describe(this.getUA());
}
return this.parsedResult.os;
}
/**
* Get OS name
* @param {Boolean} [toLowerCase] return lower-cased value
* @return {String} name of the OS — macOS, Windows, Linux, etc.
*/
getOSName(toLowerCase) {
const { name } = this.getOS();
if (toLowerCase) {
return String(name).toLowerCase() || '';
}
return name || '';
}
/**
* Get OS version
* @return {String} full version with dots ('10.11.12', '5.6', etc)
*/
getOSVersion() {
return this.getOS().version;
}
/**
* Get parsed platform
* @return {{}}
*/
getPlatform() {
if (this.parsedResult.platform) {
return this.parsedResult.platform;
}
return this.parsePlatform();
}
/**
* Get platform name
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* @param {Boolean} [toLowerCase=false]
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* @return {*}
*/
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getPlatformType(toLowerCase = false) {
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const { type } = this.getPlatform();
if (toLowerCase) {
return String(type).toLowerCase() || '';
}
return type || '';
}
/**
* Get parsed platform
* @return {{}}
*/
parsePlatform() {
this.parsedResult.platform = {};
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const platform = Utils.find(platformParsersList, (_platform) => {
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if (typeof _platform.test === 'function') {
return _platform.test(this);
}
if (_platform.test instanceof Array) {
return _platform.test.some(condition => this.test(condition));
}
throw new Error("Browser's test function is not valid");
});
if (platform) {
this.parsedResult.platform = platform.describe(this.getUA());
}
return this.parsedResult.platform;
}
/**
* Get parsed engine
* @return {{}}
*/
getEngine() {
if (this.parsedResult.engine) {
return this.parsedResult.engine;
}
return this.parseEngine();
}
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/**
* Get engines's name
* @return {String} Engines's name or an empty string
*
* @public
*/
getEngineName(toLowerCase) {
if (toLowerCase) {
return String(this.getEngine().name).toLowerCase() || '';
}
return this.getEngine().name || '';
}
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/**
* Get parsed platform
* @return {{}}
*/
parseEngine() {
this.parsedResult.engine = {};
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const engine = Utils.find(enginesParsersList, (_engine) => {
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if (typeof _engine.test === 'function') {
return _engine.test(this);
}
if (_engine.test instanceof Array) {
return _engine.test.some(condition => this.test(condition));
}
throw new Error("Browser's test function is not valid");
});
if (engine) {
this.parsedResult.engine = engine.describe(this.getUA());
}
return this.parsedResult.engine;
}
/**
* Parse full information about the browser
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* @returns {Parser}
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*/
parse() {
this.parseBrowser();
this.parseOS();
this.parsePlatform();
this.parseEngine();
return this;
}
/**
* Get parsed result
* @return {ParsedResult}
*/
getResult() {
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return Utils.assign({}, this.parsedResult);
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}
/**
* Check if parsed browser matches certain conditions
*
* @param {Object} checkTree It's one or two layered object,
* which can include a platform or an OS on the first layer
* and should have browsers specs on the bottom-laying layer
*
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* @returns {Boolean|undefined} Whether the browser satisfies the set conditions or not.
* Returns `undefined` when the browser is no described in the checkTree object.
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*
* @example
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* const browser = Bowser.getParser(window.navigator.userAgent);
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* if (browser.satisfies({chrome: '>118.01.1322' }))
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* // or with os
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* if (browser.satisfies({windows: { chrome: '>118.01.1322' } }))
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* // or with platforms
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* if (browser.satisfies({desktop: { chrome: '>118.01.1322' } }))
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*/
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satisfies(checkTree) {
const platformsAndOSes = {};
let platformsAndOSCounter = 0;
const browsers = {};
let browsersCounter = 0;
const allDefinitions = Object.keys(checkTree);
allDefinitions.forEach((key) => {
const currentDefinition = checkTree[key];
if (typeof currentDefinition === 'string') {
browsers[key] = currentDefinition;
browsersCounter += 1;
} else if (typeof currentDefinition === 'object') {
platformsAndOSes[key] = currentDefinition;
platformsAndOSCounter += 1;
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}
});
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if (platformsAndOSCounter > 0) {
const platformsAndOSNames = Object.keys(platformsAndOSes);
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const OSMatchingDefinition = Utils.find(platformsAndOSNames, name => (this.isOS(name)));
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if (OSMatchingDefinition) {
const osResult = this.satisfies(platformsAndOSes[OSMatchingDefinition]);
if (osResult !== void 0) {
return osResult;
}
}
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const platformMatchingDefinition = Utils.find(
platformsAndOSNames,
name => (this.isPlatform(name)),
);
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if (platformMatchingDefinition) {
const platformResult = this.satisfies(platformsAndOSes[platformMatchingDefinition]);
if (platformResult !== void 0) {
return platformResult;
}
}
}
if (browsersCounter > 0) {
const browserNames = Object.keys(browsers);
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const matchingDefinition = Utils.find(browserNames, name => (this.isBrowser(name, true)));
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if (matchingDefinition !== void 0) {
return this.compareVersion(browsers[matchingDefinition]);
}
}
return undefined;
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}
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/**
* Check if the browser name equals the passed string
* @param browserName The string to compare with the browser name
* @param [includingAlias=false] The flag showing whether alias will be included into comparison
* @returns {boolean}
*/
isBrowser(browserName, includingAlias = false) {
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const defaultBrowserName = this.getBrowserName().toLowerCase();
let browserNameLower = browserName.toLowerCase();
const alias = Utils.getBrowserTypeByAlias(browserNameLower);
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if (includingAlias & & alias) {
browserNameLower = alias.toLowerCase();
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}
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return browserNameLower === defaultBrowserName;
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}
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compareVersion(version) {
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let expectedResults = [0];
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let comparableVersion = version;
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let isLoose = false;
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const currentBrowserVersion = this.getBrowserVersion();
if (typeof currentBrowserVersion !== 'string') {
return void 0;
}
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if (version[0] === '>' || version[0] === '< ') {
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comparableVersion = version.substr(1);
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if (version[1] === '=') {
isLoose = true;
comparableVersion = version.substr(2);
} else {
expectedResults = [];
}
if (version[0] === '>') {
expectedResults.push(1);
} else {
expectedResults.push(-1);
}
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} else if (version[0] === '=') {
comparableVersion = version.substr(1);
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} else if (version[0] === '~') {
isLoose = true;
comparableVersion = version.substr(1);
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}
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return expectedResults.indexOf(
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Utils.compareVersions(currentBrowserVersion, comparableVersion, isLoose),
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) > -1;
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}
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isOS(osName) {
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return this.getOSName(true) === String(osName).toLowerCase();
}
isPlatform(platformType) {
return this.getPlatformType(true) === String(platformType).toLowerCase();
}
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isEngine(engineName) {
return this.getEngineName(true) === String(engineName).toLowerCase();
}
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/**
* Is anything? Check if the browser is called "anything",
* the OS called "anything" or the platform called "anything"
* @param {String} anything
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* @param [includingAlias=false] The flag showing whether alias will be included into comparison
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* @returns {Boolean}
*/
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is(anything, includingAlias = false) {
return this.isBrowser(anything, includingAlias) || this.isOS(anything)
|| this.isPlatform(anything);
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}
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/**
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* Check if any of the given values satisfies this.is(anything)
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* @param {String[]} anythings
* @returns {Boolean}
*/
some(anythings = []) {
return anythings.some(anything => this.is(anything));
}
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}
export default Parser;
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