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Some premature optimizations

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Faisal Salman 2013-03-18 18:30:05 +07:00
parent 4ebe7a1899
commit 5717b00343
1 changed files with 94 additions and 75 deletions
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169
src/ua-parser.js
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@ -1,4 +1,4 @@
// UAParser.js v0.5.20 // UAParser.js v0.5.21
// Lightweight JavaScript-based User-Agent string parser // Lightweight JavaScript-based User-Agent string parser
// https://github.com/faisalman/ua-parser-js // https://github.com/faisalman/ua-parser-js
// //
@ -15,9 +15,10 @@
var EMPTY = '', var EMPTY = '',
FUNC = 'function', UNKNOWN = '?',
UNDEF = 'undefined', FUNC_TYPE = 'function',
OBJ = 'object', UNDEF_TYPE = 'undefined',
OBJ_TYPE = 'object',
MAJOR = 'major', MAJOR = 'major',
MODEL = 'model', MODEL = 'model',
NAME = 'name', NAME = 'name',
@ -29,6 +30,21 @@
TABLET = 'tablet'; TABLET = 'tablet';
///////////
// Helper
//////////
var util = {
has : function (str1, str2) {
return str2.toLowerCase().indexOf(str1.toLowerCase()) !== -1;
},
isType : function (obj, str) {
return typeof obj === str;
}
};
/////////////// ///////////////
// Map helper // Map helper
////////////// //////////////
@ -36,71 +52,72 @@
var mapper = { var mapper = {
regex : function () { rgx : function () {
var result, i, j, k, l, m, args = arguments;
// loop through all regexes maps // loop through all regexes maps
for (i = 0; i < args.length; i += 2) { for (var result, i = 0, j, k, p, matches, match, args = arguments; i < args.length; i += 2) {
var regex = args[i], // even sequence (0,2,4,..) var regex = args[i], // even sequence (0,2,4,..)
props = args[i + 1]; // odd sequence (1,3,5,..) props = args[i + 1]; // odd sequence (1,3,5,..)
// construct object barebones // construct object barebones
if (typeof result === UNDEF) { if (util.isType(result, UNDEF_TYPE)) {
result = {}; result = {};
for (k = 0; k < props.length; k++) { for (p in props) {
if (typeof props[k] === OBJ) { if (util.isType(p, OBJ_TYPE)) {
result[props[k][0]] = undefined; result[p[0]] = undefined;
} else { } else {
result[props[k]] = undefined; result[p] = undefined;
} }
} }
if (this.getUA().toString() === EMPTY) {
return result;
}
} }
// try matching uastring with regexes // try matching uastring with regexes
for (j = 0; j < regex.length; j++) { for (j = k = 0; j < regex.length; j++) {
l = regex[j].exec(this.getUA()); matches = regex[j].exec(this.getUA());
if (!!l) { if (!!matches) {
for (k = 0; k < props.length; k++) { for (p in props) {
m = l[k + 1]; match = matches[k + 1];
if (typeof props[k] === OBJ && props[k].length === 2) { // check if given property is actually array
result[props[k][0]] = props[k][1]; if (util.isType(p, OBJ_TYPE)) {
} else if (typeof props[k] === OBJ && props[k].length === 3) { if (p.length == 2) {
if (typeof props[k][1] === FUNC && !(props[k][1].exec && props[k][1].test)) { // assign given value, ignore regex match
result[props[k][0]] = m ? props[k][1].call(this, m, props[k][2]) : undefined; result[p[0]] = p[1];
} else { } else if (p.length == 3) {
result[props[k][0]] = m ? m.replace(props[k][1], props[k][2]) : undefined; // check whether function or regex
if (util.isType(p[1], FUNC_TYPE) && !(p[1].exec && p[1].test)) {
// call function (usually string mapper)
result[p[0]] = match ? p[1].call(this, match, p[2]) : undefined;
} else {
// sanitize match using given regex
result[p[0]] = match ? match.replace(p[1], p[2]) : undefined;
}
} }
} else { } else {
result[props[k]] = m ? m : undefined; result[p] = match ? match : undefined;
} }
} }
break; break;
} }
} }
if(!!l) break; // break the loop immediately if match found if(!!matches) break; // break the loop immediately if match found
} }
return result; return result;
}, },
string : function (str, map) { str : function (str, map) {
for (var i in map) { for (var i in map) {
if (map.hasOwnProperty(i)) { // check if array
if (typeof map[i] === OBJ && map[i].length > 0) { if (util.isType(map[i], OBJ_TYPE) && map[i].length > 0) {
for (var j = 0; j < map[i].length; j++) { for (var j in map[i]) {
if (str.toLowerCase().indexOf(map[i][j].toLowerCase()) !== -1) { if (util.has(j, str)) {
return (i.toString() === UNDEF) ? undefined : i; return (i === UNKNOWN) ? undefined : i;
}
} }
} else if (str.toLowerCase().indexOf(map[i].toLowerCase()) !== -1) {
return (i.toString() === UNDEF) ? undefined : i;
} }
} else if (util.has(map[i], str)) {
return (i === UNKNOWN) ? undefined : i;
} }
} }
return str; return str;
@ -118,19 +135,19 @@
browser : { browser : {
oldsafari : { oldsafari : {
major : { major : {
'1' : ['/85', '/125', '/312'], '1' : ['/8', '/1', '/3'],
'2' : ['/412', '/416', '/417', '/419'], '2' : '/4',
'undefined' : '/' '?' : '/'
}, },
version : { version : {
'1.0' : '/85', '1.0' : '/8',
'1.2' : '/125', '1.2' : '/1',
'1.3' : '/312', '1.3' : '/3',
'2.0' : '/412', '2.0' : '/412',
'2.0.2' : '/416', '2.0.2' : '/416',
'2.0.3' : '/417', '2.0.3' : '/417',
'2.0.4' : '/419', '2.0.4' : '/419',
'undefined' : '/' '?' : '/'
} }
} }
}, },
@ -191,7 +208,7 @@
// Lunascape/Maxthon/Netfront/Jasmine/Blazer // Lunascape/Maxthon/Netfront/Jasmine/Blazer
// Trident based // Trident based
/(avant\sbrowser|iemobile|slimbrowser|baidubrowser)[\/\s]?((\d+)?[\w\.]*)/i, /(avant\s|iemobile|slim|baidu)(?:browser)?[\/\s]?((\d+)?[\w\.]*)/i,
// Avant/IEMobile/SlimBrowser/Baidu // Avant/IEMobile/SlimBrowser/Baidu
/ms(ie)\s((\d+)?[\w\.]+)/i, // Internet Explorer /ms(ie)\s((\d+)?[\w\.]+)/i, // Internet Explorer
@ -223,11 +240,11 @@
/version\/((\d+)?[\w\.]+).+?(mobile\s?safari|safari)/i // Safari & Safari Mobile /version\/((\d+)?[\w\.]+).+?(mobile\s?safari|safari)/i // Safari & Safari Mobile
], [VERSION, MAJOR, NAME], [ ], [VERSION, MAJOR, NAME], [
/applewebkit.+?(mobile\s?safari|safari)((\/[\w\.]+))/i // Safari < 3.0 /webkit.+?(mobile\s?safari|safari)((\/[\w\.]+))/i // Safari < 3.0
], [NAME, [MAJOR, mapper.string, maps.browser.oldsafari.major], [VERSION, mapper.string, maps.browser.oldsafari.version]], [ ], [NAME, [MAJOR, mapper.str, maps.browser.oldsafari.major], [VERSION, mapper.str, maps.browser.oldsafari.version]], [
/(konqueror)\/((\d+)?[\w\.]+)/i, // Konqueror /(konqueror)\/((\d+)?[\w\.]+)/i, // Konqueror
/(applewebkit|khtml)\/((\d+)?[\w\.]+)/i /(webkit|khtml)\/((\d+)?[\w\.]+)/i
], [NAME, VERSION, MAJOR], [ ], [NAME, VERSION, MAJOR], [
// Gecko based // Gecko based
@ -279,11 +296,14 @@
/(sony)\s(tablet\s[ps])/i // Sony Tablets /(sony)\s(tablet\s[ps])/i // Sony Tablets
], [VENDOR, MODEL, [TYPE, TABLET]], [ ], [VENDOR, MODEL, [TYPE, TABLET]], [
/(nintendo|playstation)\s([wids3portablev]+)/i // Nintendo/Playstation /(nintendo)\s([wids3u]+)/i // Nintendo
], [VENDOR, MODEL, [TYPE, CONSOLE]], [ ], [VENDOR, MODEL, [TYPE, CONSOLE]], [
/((playstation)\s[3portablevi]+)/i // Playstation
], [[VENDOR, 'Sony'], MODEL, [TYPE, CONSOLE]], [
/(sprint\s(\w+))/i // Sprint Phones /(sprint\s(\w+))/i // Sprint Phones
], [[VENDOR, mapper.string, maps.device.sprint.vendor], [MODEL, mapper.string, maps.device.sprint.model], [TYPE, MOBILE]], [ ], [[VENDOR, mapper.str, maps.device.sprint.vendor], [MODEL, mapper.str, maps.device.sprint.model], [TYPE, MOBILE]], [
/(htc)[;_\s-]+([\w\s]+(?=\))|\w+)*/i, // HTC /(htc)[;_\s-]+([\w\s]+(?=\))|\w+)*/i, // HTC
/(zte)-(\w+)*/i, // ZTE /(zte)-(\w+)*/i, // ZTE
@ -326,10 +346,8 @@
/(presto)\/([\w\.]+)/i, // Presto /(presto)\/([\w\.]+)/i, // Presto
/(webkit|trident|netfront|netsurf|amaya|lynx|w3m)\/([\w\.]+)/i, // WebKit/Trident/NetFront/NetSurf/Amaya/Lynx/w3m /(webkit|trident|netfront|netsurf|amaya|lynx|w3m)\/([\w\.]+)/i, // WebKit/Trident/NetFront/NetSurf/Amaya/Lynx/w3m
/(khtml)\/([\w\.]+)/i, // KHTML /(khtml|tasman|links)[\/\s]\(?([\w\.]+)/i, // KHTML/Tasman/Links
/(tasman)\s([\w\.]+)/i, // Tasman /(icab)[\/\s]([23]\.[\d\.]+)/i // iCab
/(links)\s\(([\w\.]+)/i, // Links
/(icab)[\/\s]([2-3]\.[\d\.]+)/i // iCab
], [NAME, VERSION], [ ], [NAME, VERSION], [
/rv\:([\w\.]+).*(gecko)/i // Gecko /rv\:([\w\.]+).*(gecko)/i // Gecko
@ -341,9 +359,9 @@
// Windows based // Windows based
/(windows)\snt\s6\.2;\s(arm)/i, // Windows RT /(windows)\snt\s6\.2;\s(arm)/i, // Windows RT
/(windows\sphone(?:\sos)*|windows\smobile|windows)[\s\/]?([ntce\d\.\s]+\w)/i /(windows\sphone(?:\sos)*|windows\smobile|windows)[\s\/]?([ntce\d\.\s]+\w)/i
], [NAME, [VERSION, mapper.string, maps.os.windows.version]], [ ], [NAME, [VERSION, mapper.str, maps.os.windows.version]], [
/(win(?=3|9|n)|win\s9x\s)([nt\d\.]+)/i /(win(?=3|9|n)|win\s9x\s)([nt\d\.]+)/i
], [[NAME, 'Windows'], [VERSION, mapper.string, maps.os.windows.version]], [ ], [[NAME, 'Windows'], [VERSION, mapper.str, maps.os.windows.version]], [
// Mobile/Embedded OS // Mobile/Embedded OS
/\((bb)(10);/i // BlackBerry 10 /\((bb)(10);/i // BlackBerry 10
@ -359,7 +377,7 @@
], [[NAME, 'Firefox OS'], VERSION], [ ], [[NAME, 'Firefox OS'], VERSION], [
// Console // Console
/(nintendo|playstation)\s([wids3portablev]+)/i, // Nintendo/Playstation /(nintendo|playstation)\s([wids3portablevu]+)/i, // Nintendo/Playstation
// GNU/Linux based // GNU/Linux based
/(mint)[\/\s\(]?(\w+)*/i, // Mint /(mint)[\/\s\(]?(\w+)*/i, // Mint
@ -378,7 +396,7 @@
], [[NAME, 'Solaris'], VERSION], [ ], [[NAME, 'Solaris'], VERSION], [
// BSD based // BSD based
/\s(\w*bsd|dragonfly)\s?([\w\.]+)*/i // FreeBSD/NetBSD/OpenBSD/DragonFly /\s([frentopc-]{0,4}bsd|dragonfly)\s?([\w\.]+)*/i // FreeBSD/NetBSD/OpenBSD/PC-BSD/DragonFly
], [NAME, VERSION],[ ], [NAME, VERSION],[
/(ip[honead]+)(?:.*os\s*([\w]+)*\slike\smac|;\sopera)/i // iOS /(ip[honead]+)(?:.*os\s*([\w]+)*\slike\smac|;\sopera)/i // iOS
@ -403,7 +421,7 @@
//////////////// ////////////////
var UAParser = function UAParser (uastring) { var UAParser = function (uastring) {
var ua = uastring || ((window && window.navigator && window.navigator.userAgent) ? window.navigator.userAgent : EMPTY); var ua = uastring || ((window && window.navigator && window.navigator.userAgent) ? window.navigator.userAgent : EMPTY);
@ -411,16 +429,16 @@
return new UAParser(uastring).getResult(); return new UAParser(uastring).getResult();
} }
this.getBrowser = function () { this.getBrowser = function () {
return mapper.regex.apply(this, regexes.browser); return mapper.rgx.apply(this, regexes.browser);
}; };
this.getDevice = function () { this.getDevice = function () {
return mapper.regex.apply(this, regexes.device); return mapper.rgx.apply(this, regexes.device);
}; };
this.getEngine = function () { this.getEngine = function () {
return mapper.regex.apply(this, regexes.engine); return mapper.rgx.apply(this, regexes.engine);
}; };
this.getOS = function () { this.getOS = function () {
return mapper.regex.apply(this, regexes.os); return mapper.rgx.apply(this, regexes.os);
}; };
this.getResult = function() { this.getResult = function() {
return { return {
@ -447,13 +465,13 @@
// check js environment // check js environment
if (typeof exports !== UNDEF && !/\[object\s[DOM]*Window\]/.test(global.toString())) { if (!util.isType(exports, UNDEF_TYPE)) {
// nodejs env // nodejs env
if (typeof module !== UNDEF && module.exports) { if (!util.isType(module, UNDEF_TYPE) && module.exports) {
exports = module.exports = UAParser; exports = module.exports = UAParser;
} }
exports.UAParser = UAParser; exports.UAParser = UAParser;
} else if (typeof define === FUNC && define.amd) { } else if (util.isType(define, FUNC_TYPE) && define.amd) {
// requirejs env // requirejs env
define(function() { define(function() {
return UAParser; return UAParser;
@ -461,21 +479,22 @@
} else { } else {
// browser env // browser env
window.UAParser = UAParser; window.UAParser = UAParser;
// jQuery specific // jQuery specific (optional)
if (typeof window.jQuery !== UNDEF) { if (!util.isType(window.jQuery, UNDEF_TYPE)) {
var $ = window.jQuery;
var parser = new UAParser(); var parser = new UAParser();
window.jQuery.ua = parser.getResult(); $.ua = parser.getResult();
window.jQuery.ua.get = function() { $.ua.get = function() {
return parser.getUA(); return parser.getUA();
}; };
window.jQuery.ua.set = function(uastring) { $.ua.set = function(uastring) {
parser.setUA(uastring); parser.setUA(uastring);
var result = parser.getResult(); var result = parser.getResult();
for (var prop in result) { for (var prop in result) {
window.jQuery.ua[prop] = result[prop]; $.ua[prop] = result[prop];
} }
}; };
} }
} }
})(this); })(this);