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+/**
+ * User-agent detection
+ *
+ * @class jQuery.client
+ * @singleton
+ */
+( function ( $ ) {
+
+ /**
+ * @private
+ * @property {Object} profileCache Keyed by userAgent string,
+ * value is the parsed $.client.profile object for that user agent.
+ */
+ var profileCache = {};
+
+ $.client = {
+
+ /**
+ * Get an object containing information about the client.
+ *
+ * @param {Object} [nav] An object with a 'userAgent' and 'platform' property.
+ * Defaults to the global `navigator` object.
+ * @return {Object} The resulting client object will be in the following format:
+ *
+ * {
+ * 'name': 'firefox',
+ * 'layout': 'gecko',
+ * 'layoutVersion': 20101026,
+ * 'platform': 'linux'
+ * 'version': '3.5.1',
+ * 'versionBase': '3',
+ * 'versionNumber': 3.5,
+ * }
+ */
+ profile: function ( nav ) {
+ /*jshint boss: true */
+
+ if ( nav === undefined ) {
+ nav = window.navigator;
+ }
+
+ // Use the cached version if possible
+ if ( profileCache[ nav.userAgent + '|' + nav.platform ] !== undefined ) {
+ return profileCache[ nav.userAgent + '|' + nav.platform ];
+ }
+
+ var
+ versionNumber,
+ key = nav.userAgent + '|' + nav.platform,
+
+ // Configuration
+
+ // Name of browsers or layout engines we don't recognize
+ uk = 'unknown',
+ // Generic version digit
+ x = 'x',
+ // Strings found in user agent strings that need to be conformed
+ wildUserAgents = ['Opera', 'Navigator', 'Minefield', 'KHTML', 'Chrome', 'PLAYSTATION 3', 'Iceweasel'],
+ // Translations for conforming user agent strings
+ userAgentTranslations = [
+ // Tons of browsers lie about being something they are not
+ [/(Firefox|MSIE|KHTML,?\slike\sGecko|Konqueror)/, ''],
+ // Chrome lives in the shadow of Safari still
+ ['Chrome Safari', 'Chrome'],
+ // KHTML is the layout engine not the browser - LIES!
+ ['KHTML', 'Konqueror'],
+ // Firefox nightly builds
+ ['Minefield', 'Firefox'],
+ // This helps keep different versions consistent
+ ['Navigator', 'Netscape'],
+ // This prevents version extraction issues, otherwise translation would happen later
+ ['PLAYSTATION 3', 'PS3']
+ ],
+ // Strings which precede a version number in a user agent string - combined and used as
+ // match 1 in version detection
+ versionPrefixes = [
+ 'camino', 'chrome', 'firefox', 'iceweasel', 'netscape', 'netscape6', 'opera', 'version', 'konqueror',
+ 'lynx', 'msie', 'safari', 'ps3', 'android'
+ ],
+ // Used as matches 2, 3 and 4 in version extraction - 3 is used as actual version number
+ versionSuffix = '(\\/|\\;?\\s|)([a-z0-9\\.\\+]*?)(\\;|dev|rel|\\)|\\s|$)',
+ // Names of known browsers
+ names = [
+ 'camino', 'chrome', 'firefox', 'iceweasel', 'netscape', 'konqueror', 'lynx', 'msie', 'opera',
+ 'safari', 'ipod', 'iphone', 'blackberry', 'ps3', 'rekonq', 'android'
+ ],
+ // Tanslations for conforming browser names
+ nameTranslations = [],
+ // Names of known layout engines
+ layouts = ['gecko', 'konqueror', 'msie', 'trident', 'opera', 'webkit'],
+ // Translations for conforming layout names
+ layoutTranslations = [ ['konqueror', 'khtml'], ['msie', 'trident'], ['opera', 'presto'] ],
+ // Names of supported layout engines for version number
+ layoutVersions = ['applewebkit', 'gecko', 'trident'],
+ // Names of known operating systems
+ platforms = ['win', 'wow64', 'mac', 'linux', 'sunos', 'solaris', 'iphone'],
+ // Translations for conforming operating system names
+ platformTranslations = [ ['sunos', 'solaris'], ['wow64', 'win'] ],
+
+ /**
+ * Performs multiple replacements on a string
+ * @ignore
+ */
+ translate = function ( source, translations ) {
+ var i;
+ for ( i = 0; i < translations.length; i++ ) {
+ source = source.replace( translations[i][0], translations[i][1] );
+ }
+ return source;
+ },
+
+ // Pre-processing
+
+ ua = nav.userAgent,
+ match,
+ name = uk,
+ layout = uk,
+ layoutversion = uk,
+ platform = uk,
+ version = x;
+
+ if ( match = new RegExp( '(' + wildUserAgents.join( '|' ) + ')' ).exec( ua ) ) {
+ // Takes a userAgent string and translates given text into something we can more easily work with
+ ua = translate( ua, userAgentTranslations );
+ }
+ // Everything will be in lowercase from now on
+ ua = ua.toLowerCase();
+
+ // Extraction
+
+ if ( match = new RegExp( '(' + names.join( '|' ) + ')' ).exec( ua ) ) {
+ name = translate( match[1], nameTranslations );
+ }
+ if ( match = new RegExp( '(' + layouts.join( '|' ) + ')' ).exec( ua ) ) {
+ layout = translate( match[1], layoutTranslations );
+ }
+ if ( match = new RegExp( '(' + layoutVersions.join( '|' ) + ')\\\/(\\d+)').exec( ua ) ) {
+ layoutversion = parseInt( match[2], 10 );
+ }
+ if ( match = new RegExp( '(' + platforms.join( '|' ) + ')' ).exec( nav.platform.toLowerCase() ) ) {
+ platform = translate( match[1], platformTranslations );
+ }
+ if ( match = new RegExp( '(' + versionPrefixes.join( '|' ) + ')' + versionSuffix ).exec( ua ) ) {
+ version = match[3];
+ }
+
+ // Edge Cases -- did I mention about how user agent string lie?
+
+ // Decode Safari's crazy 400+ version numbers
+ if ( name === 'safari' && version > 400 ) {
+ version = '2.0';
+ }
+ // Expose Opera 10's lies about being Opera 9.8
+ if ( name === 'opera' && version >= 9.8 ) {
+ match = ua.match( /\bversion\/([0-9\.]*)/ );
+ if ( match && match[1] ) {
+ version = match[1];
+ } else {
+ version = '10';
+ }
+ }
+ // And Opera 15's lies about being Chrome
+ if ( name === 'chrome' && ( match = ua.match( /\bopr\/([0-9\.]*)/ ) ) ) {
+ if ( match[1] ) {
+ name = 'opera';
+ version = match[1];
+ }
+ }
+ // And IE 11's lies about being not being IE
+ if ( layout === 'trident' && layoutversion >= 7 && ( match = ua.match( /\brv[ :\/]([0-9\.]*)/ ) ) ) {
+ if ( match[1] ) {
+ name = 'msie';
+ version = match[1];
+ }
+ }
+ // And Amazon Silk's lies about being Android on mobile or Safari on desktop
+ if ( match = ua.match( /\bsilk\/([0-9.\-_]*)/ ) ) {
+ if ( match[1] ) {
+ name = 'silk';
+ version = match[1];
+ }
+ }
+
+ versionNumber = parseFloat( version, 10 ) || 0.0;
+
+ // Caching
+
+ return profileCache[ key ] = {
+ name: name,
+ layout: layout,
+ layoutVersion: layoutversion,
+ platform: platform,
+ version: version,
+ versionBase: ( version !== x ? Math.floor( versionNumber ).toString() : x ),
+ versionNumber: versionNumber
+ };
+ },
+
+ /**
+ * Checks the current browser against a support map object.
+ *
+ * Version numbers passed as numeric values will be compared like numbers (1.2 > 1.11).
+ * Version numbers passed as string values will be compared using a simple component-wise
+ * algorithm, similar to PHP's version_compare ('1.2' < '1.11').
+ *
+ * A browser map is in the following format:
+ *
+ * {
+ * // Multiple rules with configurable operators
+ * 'msie': [['>=', 7], ['!=', 9]],
+ * // Match no versions
+ * 'iphone': false,
+ * // Match any version
+ * 'android': null
+ * }
+ *
+ * It can optionally be split into ltr/rtl sections:
+ *
+ * {
+ * 'ltr': {
+ * 'android': null,
+ * 'iphone': false
+ * },
+ * 'rtl': {
+ * 'android': false,
+ * // rules are not inherited from ltr
+ * 'iphone': false
+ * }
+ * }
+ *
+ * @param {Object} map Browser support map
+ * @param {Object} [profile] A client-profile object
+ * @param {boolean} [exactMatchOnly=false] Only return true if the browser is matched, otherwise
+ * returns true if the browser is not found.
+ *
+ * @return {boolean} The current browser is in the support map
+ */
+ test: function ( map, profile, exactMatchOnly ) {
+ /*jshint evil: true */
+
+ var conditions, dir, i, op, val, j, pieceVersion, pieceVal, compare;
+ profile = $.isPlainObject( profile ) ? profile : $.client.profile();
+ if ( map.ltr && map.rtl ) {
+ dir = $( 'body' ).is( '.rtl' ) ? 'rtl' : 'ltr';
+ map = map[dir];
+ }
+ // Check over each browser condition to determine if we are running in a compatible client
+ if ( typeof map !== 'object' || map[profile.name] === undefined ) {
+ // Not found, return true if exactMatchOnly not set, false otherwise
+ return !exactMatchOnly;
+ }
+ conditions = map[profile.name];
+ if ( conditions === false ) {
+ // Match no versions
+ return false;
+ }
+ if ( conditions === null ) {
+ // Match all versions
+ return true;
+ }
+ for ( i = 0; i < conditions.length; i++ ) {
+ op = conditions[i][0];
+ val = conditions[i][1];
+ if ( typeof val === 'string' ) {
+ // Perform a component-wise comparison of versions, similar to PHP's version_compare
+ // but simpler. '1.11' is larger than '1.2'.
+ pieceVersion = profile.version.toString().split( '.' );
+ pieceVal = val.split( '.' );
+ // Extend with zeroes to equal length
+ while ( pieceVersion.length < pieceVal.length ) {
+ pieceVersion.push( '0' );
+ }
+ while ( pieceVal.length < pieceVersion.length ) {
+ pieceVal.push( '0' );
+ }
+ // Compare components
+ compare = 0;
+ for ( j = 0; j < pieceVersion.length; j++ ) {
+ if ( Number( pieceVersion[j] ) < Number( pieceVal[j] ) ) {
+ compare = -1;
+ break;
+ } else if ( Number( pieceVersion[j] ) > Number( pieceVal[j] ) ) {
+ compare = 1;
+ break;
+ }
+ }
+ // compare will be -1, 0 or 1, depending on comparison result
+ if ( !( eval( '' + compare + op + '0' ) ) ) {
+ return false;
+ }
+ } else if ( typeof val === 'number' ) {
+ if ( !( eval( 'profile.versionNumber' + op + val ) ) ) {
+ return false;
+ }
+ }
+ }
+
+ return true;
+ }
+ };
+}( jQuery ) );
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