/files/yui/3.17.2/cookie/cookie.js
JavaScript | 515 lines | 220 code | 92 blank | 203 comment | 55 complexity | 35aabbbac0de633fa0f9872b1d8364b5 MD5 | raw file
- /*
- YUI 3.17.2 (build 9c3c78e)
- Copyright 2014 Yahoo! Inc. All rights reserved.
- Licensed under the BSD License.
- http://yuilibrary.com/license/
- */
- YUI.add('cookie', function (Y, NAME) {
- /**
- * Utilities for cookie management
- * @module cookie
- */
- //shortcuts
- var L = Y.Lang,
- O = Y.Object,
- NULL = null,
- //shortcuts to functions
- isString = L.isString,
- isObject = L.isObject,
- isUndefined = L.isUndefined,
- isFunction = L.isFunction,
- encode = encodeURIComponent,
- decode = decodeURIComponent,
- //shortcut to document
- doc = Y.config.doc;
- /*
- * Throws an error message.
- */
- function error(message){
- throw new TypeError(message);
- }
- /*
- * Checks the validity of a cookie name.
- */
- function validateCookieName(name){
- if (!isString(name) || name === ""){
- error("Cookie name must be a non-empty string.");
- }
- }
- /*
- * Checks the validity of a subcookie name.
- */
- function validateSubcookieName(subName){
- if (!isString(subName) || subName === ""){
- error("Subcookie name must be a non-empty string.");
- }
- }
- /**
- * Cookie utility.
- * @class Cookie
- * @static
- */
- Y.Cookie = {
- //-------------------------------------------------------------------------
- // Private Methods
- //-------------------------------------------------------------------------
- /**
- * Creates a cookie string that can be assigned into document.cookie.
- * @param {String} name The name of the cookie.
- * @param {String} value The value of the cookie.
- * @param {Boolean} encodeValue True to encode the value, false to leave as-is.
- * @param {Object} options (Optional) Options for the cookie.
- * @return {String} The formatted cookie string.
- * @method _createCookieString
- * @private
- * @static
- */
- _createCookieString : function (name /*:String*/, value /*:Variant*/, encodeValue /*:Boolean*/, options /*:Object*/) /*:String*/ {
- options = options || {};
- var text /*:String*/ = encode(name) + "=" + (encodeValue ? encode(value) : value),
- expires = options.expires,
- path = options.path,
- domain = options.domain;
- if (isObject(options)){
- //expiration date
- if (expires instanceof Date){
- text += "; expires=" + expires.toUTCString();
- }
- //path
- if (isString(path) && path !== ""){
- text += "; path=" + path;
- }
- //domain
- if (isString(domain) && domain !== ""){
- text += "; domain=" + domain;
- }
- //secure
- if (options.secure === true){
- text += "; secure";
- }
- }
- return text;
- },
- /**
- * Formats a cookie value for an object containing multiple values.
- * @param {Object} hash An object of key-value pairs to create a string for.
- * @return {String} A string suitable for use as a cookie value.
- * @method _createCookieHashString
- * @private
- * @static
- */
- _createCookieHashString : function (hash /*:Object*/) /*:String*/ {
- if (!isObject(hash)){
- error("Cookie._createCookieHashString(): Argument must be an object.");
- }
- var text /*:Array*/ = [];
- O.each(hash, function(value, key){
- if (!isFunction(value) && !isUndefined(value)){
- text.push(encode(key) + "=" + encode(String(value)));
- }
- });
- return text.join("&");
- },
- /**
- * Parses a cookie hash string into an object.
- * @param {String} text The cookie hash string to parse (format: n1=v1&n2=v2).
- * @return {Object} An object containing entries for each cookie value.
- * @method _parseCookieHash
- * @private
- * @static
- */
- _parseCookieHash : function (text) {
- var hashParts = text.split("&"),
- hashPart = NULL,
- hash = {};
- if (text.length){
- for (var i=0, len=hashParts.length; i < len; i++){
- hashPart = hashParts[i].split("=");
- hash[decode(hashPart[0])] = decode(hashPart[1]);
- }
- }
- return hash;
- },
- /**
- * Parses a cookie string into an object representing all accessible cookies.
- * @param {String} text The cookie string to parse.
- * @param {Boolean} shouldDecode (Optional) Indicates if the cookie values should be decoded or not. Default is true.
- * @param {Object} options (Optional) Contains settings for loading the cookie.
- * @return {Object} An object containing entries for each accessible cookie.
- * @method _parseCookieString
- * @private
- * @static
- */
- _parseCookieString : function (text /*:String*/, shouldDecode /*:Boolean*/, options /*:Object*/) /*:Object*/ {
- var cookies /*:Object*/ = {};
- if (isString(text) && text.length > 0) {
- var decodeValue = (shouldDecode === false ? function(s){return s;} : decode),
- cookieParts = text.split(/;\s/g),
- cookieName = NULL,
- cookieValue = NULL,
- cookieNameValue = NULL;
- for (var i=0, len=cookieParts.length; i < len; i++){
- //check for normally-formatted cookie (name-value)
- cookieNameValue = cookieParts[i].match(/([^=]+)=/i);
- if (cookieNameValue instanceof Array){
- try {
- cookieName = decode(cookieNameValue[1]);
- cookieValue = decodeValue(cookieParts[i].substring(cookieNameValue[1].length+1));
- } catch (ex){
- //intentionally ignore the cookie - the encoding is wrong
- }
- } else {
- //means the cookie does not have an "=", so treat it as a boolean flag
- cookieName = decode(cookieParts[i]);
- cookieValue = "";
- }
- // don't overwrite an already loaded cookie if set by option
- if (!isUndefined(options) && options.reverseCookieLoading) {
- if (isUndefined(cookies[cookieName])) {
- cookies[cookieName] = cookieValue;
- }
- } else {
- cookies[cookieName] = cookieValue;
- }
- }
- }
- return cookies;
- },
- /**
- * Sets the document object that the cookie utility uses for setting
- * cookies. This method is necessary to ensure that the cookie utility
- * unit tests can pass even when run on a domain instead of locally.
- * This method should not be used otherwise; you should use
- * <code>Y.config.doc</code> to change the document that the cookie
- * utility uses for everyday purposes.
- * @param {Object} newDoc The object to use as the document.
- * @method _setDoc
- * @private
- */
- _setDoc: function(newDoc){
- doc = newDoc;
- },
- //-------------------------------------------------------------------------
- // Public Methods
- //-------------------------------------------------------------------------
- /**
- * Determines if the cookie with the given name exists. This is useful for
- * Boolean cookies (those that do not follow the name=value convention).
- * @param {String} name The name of the cookie to check.
- * @return {Boolean} True if the cookie exists, false if not.
- * @method exists
- * @static
- */
- exists: function(name) {
- validateCookieName(name); //throws error
- var cookies = this._parseCookieString(doc.cookie, true);
- return cookies.hasOwnProperty(name);
- },
- /**
- * Returns the cookie value for the given name.
- * @param {String} name The name of the cookie to retrieve.
- * @param {Function|Object} options (Optional) An object containing one or more
- * cookie options: raw (true/false), reverseCookieLoading (true/false)
- * and converter (a function).
- * The converter function is run on the value before returning it. The
- * function is not used if the cookie doesn't exist. The function can be
- * passed instead of the options object for backwards compatibility. When
- * raw is set to true, the cookie value is not URI decoded.
- * @return {Any} If no converter is specified, returns a string or null if
- * the cookie doesn't exist. If the converter is specified, returns the value
- * returned from the converter or null if the cookie doesn't exist.
- * @method get
- * @static
- */
- get : function (name, options) {
- validateCookieName(name); //throws error
- var cookies,
- cookie,
- converter;
- //if options is a function, then it's the converter
- if (isFunction(options)) {
- converter = options;
- options = {};
- } else if (isObject(options)) {
- converter = options.converter;
- } else {
- options = {};
- }
- cookies = this._parseCookieString(doc.cookie, !options.raw, options);
- cookie = cookies[name];
- //should return null, not undefined if the cookie doesn't exist
- if (isUndefined(cookie)) {
- return NULL;
- }
- if (!isFunction(converter)){
- return cookie;
- } else {
- return converter(cookie);
- }
- },
- /**
- * Returns the value of a subcookie.
- * @param {String} name The name of the cookie to retrieve.
- * @param {String} subName The name of the subcookie to retrieve.
- * @param {Function} converter (Optional) A function to run on the value before returning
- * it. The function is not used if the cookie doesn't exist.
- * @param {Object} options (Optional) Containing one or more settings for cookie parsing.
- * @return {Any} If the cookie doesn't exist, null is returned. If the subcookie
- * doesn't exist, null if also returned. If no converter is specified and the
- * subcookie exists, a string is returned. If a converter is specified and the
- * subcookie exists, the value returned from the converter is returned.
- * @method getSub
- * @static
- */
- getSub : function (name /*:String*/, subName /*:String*/, converter /*:Function*/, options /*:Object*/) /*:Variant*/ {
- var hash /*:Variant*/ = this.getSubs(name, options);
- if (hash !== NULL) {
- validateSubcookieName(subName); //throws error
- if (isUndefined(hash[subName])){
- return NULL;
- }
- if (!isFunction(converter)){
- return hash[subName];
- } else {
- return converter(hash[subName]);
- }
- } else {
- return NULL;
- }
- },
- /**
- * Returns an object containing name-value pairs stored in the cookie with the given name.
- * @param {String} name The name of the cookie to retrieve.
- * @param {Object} options (Optional) Containing one or more settings for cookie parsing.
- * @return {Object} An object of name-value pairs if the cookie with the given name
- * exists, null if it does not.
- * @method getSubs
- * @static
- */
- getSubs : function (name /*:String*/, options /*:Object*/) {
- validateCookieName(name); //throws error
- var cookies = this._parseCookieString(doc.cookie, false, options);
- if (isString(cookies[name])){
- return this._parseCookieHash(cookies[name]);
- }
- return NULL;
- },
- /**
- * Removes a cookie from the machine by setting its expiration date to
- * sometime in the past.
- * @param {String} name The name of the cookie to remove.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string),
- * and secure (true/false). The expires option will be overwritten
- * by the method.
- * @return {String} The created cookie string.
- * @method remove
- * @static
- */
- remove : function (name, options) {
- validateCookieName(name); //throws error
- //set options
- options = Y.merge(options || {}, {
- expires: new Date(0)
- });
- //set cookie
- return this.set(name, "", options);
- },
- /**
- * Removes a sub cookie with a given name.
- * @param {String} name The name of the cookie in which the subcookie exists.
- * @param {String} subName The name of the subcookie to remove.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * removeIfEmpty (true/false), and secure (true/false). This must be the same
- * settings as the original subcookie.
- * @return {String} The created cookie string.
- * @method removeSub
- * @static
- */
- removeSub : function(name, subName, options) {
- validateCookieName(name); //throws error
- validateSubcookieName(subName); //throws error
- options = options || {};
- //get all subcookies for this cookie
- var subs = this.getSubs(name);
- //delete the indicated subcookie
- if (isObject(subs) && subs.hasOwnProperty(subName)){
- delete subs[subName];
- if (!options.removeIfEmpty) {
- //reset the cookie
- return this.setSubs(name, subs, options);
- } else {
- //reset the cookie if there are subcookies left, else remove
- for (var key in subs){
- if (subs.hasOwnProperty(key) && !isFunction(subs[key]) && !isUndefined(subs[key])){
- return this.setSubs(name, subs, options);
- }
- }
- return this.remove(name, options);
- }
- } else {
- return "";
- }
- },
- /**
- * Sets a cookie with a given name and value.
- * @param {String} name The name of the cookie to set.
- * @param {Any} value The value to set for the cookie.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * secure (true/false), and raw (true/false). Setting raw to true indicates
- * that the cookie should not be URI encoded before being set.
- * @return {String} The created cookie string.
- * @method set
- * @static
- */
- set : function (name, value, options) {
- validateCookieName(name); //throws error
- if (isUndefined(value)){
- error("Cookie.set(): Value cannot be undefined.");
- }
- options = options || {};
- var text = this._createCookieString(name, value, !options.raw, options);
- doc.cookie = text;
- return text;
- },
- /**
- * Sets a sub cookie with a given name to a particular value.
- * @param {String} name The name of the cookie to set.
- * @param {String} subName The name of the subcookie to set.
- * @param {Any} value The value to set.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * and secure (true/false).
- * @return {String} The created cookie string.
- * @method setSub
- * @static
- */
- setSub : function (name, subName, value, options) {
- validateCookieName(name); //throws error
- validateSubcookieName(subName); //throws error
- if (isUndefined(value)){
- error("Cookie.setSub(): Subcookie value cannot be undefined.");
- }
- var hash = this.getSubs(name);
- if (!isObject(hash)){
- hash = {};
- }
- hash[subName] = value;
- return this.setSubs(name, hash, options);
- },
- /**
- * Sets a cookie with a given name to contain a hash of name-value pairs.
- * @param {String} name The name of the cookie to set.
- * @param {Object} value An object containing name-value pairs.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * and secure (true/false).
- * @return {String} The created cookie string.
- * @method setSubs
- * @static
- */
- setSubs : function (name, value, options) {
- validateCookieName(name); //throws error
- if (!isObject(value)){
- error("Cookie.setSubs(): Cookie value must be an object.");
- }
- var text /*:String*/ = this._createCookieString(name, this._createCookieHashString(value), false, options);
- doc.cookie = text;
- return text;
- }
- };
- }, '3.17.2', {"requires": ["yui-base"]});