cssua.js

/**
 * CssUserAgent (cssua.js) v2.1.31
 * http://cssuseragent.org
 * 
 * Copyright (c)2006-2015 Stephen M. McKamey.
 * Licensed under The MIT License.
 */
/*jshint smarttabs:true, regexp:false, browser:true */

/**
 * @type {Object}
 */
var cssua = (

/**
 * @param html {Object} root DOM element
 * @param userAgent {string} browser userAgent string
 * @return {Object}
 */
function(html, userAgent, sa) {
	'use strict';

	/**
	 * @const
	 * @type {string}
	 */
	var PREFIX = ' ua-';

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_Platform = /\s*([\-\w ]+)[\s\/\:]([\d_]+\b(?:[\-\._\/]\w+)*)/;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_Version = /([\w\-\.]+[\s\/][v]?[\d_]+\b(?:[\-\._\/]\w+)*)/g;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_BlackBerry = /\b(?:(blackberry\w*|bb10)|(rim tablet os))(?:\/(\d+\.\d+(?:\.\w+)*))?/;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_Silk = /\bsilk-accelerated=true\b/;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_FluidApp = /\bfluidapp\b/;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_desktop = /(\bwindows\b|\bmacintosh\b|\blinux\b|\bunix\b)/;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_mobile = /(\bandroid\b|\bipad\b|\bipod\b|\bwindows phone\b|\bwpdesktop\b|\bxblwp7\b|\bzunewp7\b|\bwindows ce\b|\bblackberry\w*|\bbb10\b|\brim tablet os\b|\bmeego|\bwebos\b|\bpalm|\bsymbian|\bj2me\b|\bdocomo\b|\bpda\b|\bchtml\b|\bmidp\b|\bcldc\b|\w*?mobile\w*?|\w*?phone\w*?)/;

	/**
	 * @const
	 * @type {RegExp}
	 */
	var R_game = /(\bxbox\b|\bplaystation\b|\bnintendo\s+\w+)/;

	/**
	 * The root CssUserAgent
	 * @type {Object}
	 */
	var cssua = {

		parse:
			/**
			 * @param uaStr {string}
			 * @return {Object}
			 */
			function(uaStr, sa) {

				/**
				 * @type {Object}
				 */
				var ua = {};
				if (sa) {
					ua.standalone = sa;
				}

				uaStr = (''+uaStr).toLowerCase();
				if (!uaStr) {
					return ua;
				}

				var i, count, raw = uaStr.split(/[()]/);
				for (var j=0, rawCount=raw.length; j<rawCount; j++) {
					if (j%2) {
						// inside parens covers platform identifiers
						var platforms = raw[j].split(';');
						for (i=0, count=platforms.length; i<count; i++) {
							if (R_Platform.exec(platforms[i])) {
								var key = RegExp.$1.split(' ').join('_'),
									val = RegExp.$2;

								// if duplicate entries favor highest version
								if ((!ua[key] || parseFloat(ua[key]) < parseFloat(val))) {
									ua[key] = val;
								}
							}
						}

					} else {
						// outside parens covers most version identifiers
						var uas = raw[j].match(R_Version);
						if (uas) {
							for (i=0, count=uas.length; i<count; i++) {
								var parts = uas[i].split(/[\/\s]+/);
								if (parts.length && parts[0] !== 'mozilla') {
									ua[parts[0].split(' ').join('_')] = parts.slice(1).join('-');
								}
							}
						}
					}
				}

				if (R_mobile.exec(uaStr)) {
					// mobile device indicators
					ua.mobile = RegExp.$1;
					if (R_BlackBerry.exec(uaStr)) {
						delete ua[ua.mobile];
						ua.blackberry = ua.version || RegExp.$3 || RegExp.$2 || RegExp.$1;
						if (RegExp.$1) {
							// standardize non-tablet blackberry
							ua.mobile = 'blackberry';
						} else if (ua.version === '0.0.1') {
							// fix playbook 1.0 quirk
							ua.blackberry = '7.1.0.0';
						}
					}

				} else if (R_game.exec(uaStr)) {
					// game console indicators
					ua.game = RegExp.$1;
					var game = ua.game.split(' ').join('_');

					if (ua.version && !ua[game]) {
						ua[game] = ua.version;
					}

				} else if (R_desktop.exec(uaStr)) {
					// desktop OS indicators
					ua.desktop = RegExp.$1;
				}

				// platform naming standardizations
				if (ua.intel_mac_os_x) {
					ua.mac_os_x = ua.intel_mac_os_x.split('_').join('.');
					delete ua.intel_mac_os_x;

				} else if (ua.cpu_iphone_os) {
					ua.ios = ua.cpu_iphone_os.split('_').join('.');
					delete ua.cpu_iphone_os;

				} else if (ua.cpu_os) {
					ua.ios = ua.cpu_os.split('_').join('.');
					delete ua.cpu_os;

				} else if (ua.mobile === 'iphone' && !ua.ios) {
					ua.ios = '1';
				}

				// UA naming standardizations
				if (ua.opera && ua.version) {
					ua.opera = ua.version;
					// version/XXX refers to opera
					delete ua.blackberry;

				} else if (R_Silk.exec(uaStr)) {
					ua.silk_accelerated = true;

				} else if (R_FluidApp.exec(uaStr)) {
					ua.fluidapp = ua.version;
				}

				if (ua.edge) {
					delete ua.applewebkit;
					delete ua.safari;
					delete ua.chrome;
					delete ua.android;
				}

				if (ua.applewebkit) {
					ua.webkit = ua.applewebkit;
					delete ua.applewebkit;

					if (ua.opr) {
						ua.opera = ua.opr;
						delete ua.opr;
						delete ua.chrome;
					}

					if (ua.safari) {
						if (ua.chrome || ua.crios || ua.fxios || ua.opera || ua.silk || ua.fluidapp || ua.phantomjs || (ua.mobile && !ua.ios)) {
							delete ua.safari;

							if (ua.vivaldi) {
								delete ua.chrome;
							}

						} else if (ua.version && !ua.rim_tablet_os) {
							ua.safari = ua.version;

						} else {
							ua.safari = ({
								'419': '2.0.4',
								'417': '2.0.3',
								'416': '2.0.2',
								'412': '2.0',
								'312': '1.3',
								'125': '1.2',
								'85': '1.0'
							})[parseInt(ua.safari, 10)] || ua.safari;
						}
					}

				} else if (ua.msie || ua.trident) {
					if (!ua.opera) {
						// standardize Internet Explorer
						ua.ie = ua.msie || ua.rv;
					}
					delete ua.msie;
					delete ua.android;

					if (ua.windows_phone_os) {
						// standardize window phone
						ua.windows_phone = ua.windows_phone_os;
						delete ua.windows_phone_os;

					} else if (ua.mobile === 'wpdesktop' || ua.mobile === 'xblwp7' || ua.mobile === 'zunewp7') {
						ua.mobile = 'windows desktop';
						ua.windows_phone = (+ua.ie < 9) ? '7.0' : (+ua.ie < 10) ? '7.5' : '8.0';
						delete ua.windows_nt;
					}

				} else if (ua.gecko || ua.firefox) {
					ua.gecko = ua.rv;
				}

				if (ua.rv) {
					delete ua.rv;
				}
				if (ua.version) {
					delete ua.version;
				}

				return ua;
			},

		format:
			/**
			 * @param ua {Object}
			 * @return {string}
			 */
			function (ua) {
				/**
				 * @param b {string} browser key
				 * @param v {string} browser value
				 * @return {string} formatted CSS classes
				 */
				function format(b, v) {
					b = b.split('.').join('-');

					/**
					 * @type {string}
					 */
					var css = PREFIX+b;
					if (typeof v === 'string') {
						v = v.split(' ').join('_').split('.').join('-');
						var i = v.indexOf('-');
						while (i > 0) {
							// loop through chopping last '-' to end off
							// concat result onto return string
							css += PREFIX+b+'-'+v.substring(0, i);
							i = v.indexOf('-', i+1);
						}
						css += PREFIX+b+'-'+v;
					}
					return css;
				}
	
				/**
				 * @type {string}
				 */
				var	uaCss = '';
				for (var b in ua) {
					if (b && ua.hasOwnProperty(b)) {
						uaCss += format(b, ua[b]);
					}
				}
	
				// user-agent classNames
				return uaCss;
			},

		encode:
			/**
			 * Encodes parsed userAgent object as a compact URI-Encoded key-value collection
			 * @param ua {Object}
			 * @return {string}
			 */
			function(ua) {
				var query = '';
				for (var b in ua) {
					if (b && ua.hasOwnProperty(b)) {
						if (query) {
							query += '&';
						}
						query += encodeURIComponent(b)+'='+encodeURIComponent(ua[b]);
					}
				}
				return query;
			}
	};

	/**
	 * @const
	 * @type {Object}
	 */
	cssua.userAgent = cssua.ua = cssua.parse(userAgent, sa);

	/**
	 * @const
	 * @type {string}
	 */
	var ua = cssua.format(cssua.ua)+' js';

	// append CSS classes to HTML node
	if (html.className) {
		html.className = html.className.replace(/\bno-js\b/g, '') + ua;
		
	} else {
		html.className = ua.substr(1);
	}

	return cssua;

})(document.documentElement, navigator.userAgent, navigator.standalone);