/usr/share/mediawiki-extensions/collection/js/jstorage.js is in mediawiki-extensions-collection 3.7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | /**
* ----------------------------- JSTORAGE -------------------------------------
* Simple local storage wrapper to save data on the browser side, supporting
* all major browsers - IE6+, Firefox2+, Safari4+, Chrome4+ and Opera 10.5+
*
* Copyright (c) 2010 Andris Reinman, andris.reinman@gmail.com
* Project homepage: www.jstorage.info
*
* Licensed under MIT-style license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* USAGE:
*
* jStorage requires Prototype, MooTools or jQuery! If jQuery is used, then
* jQuery-JSON (http://code.google.com/p/jquery-json/) is also needed.
* (jQuery-JSON needs to be loaded BEFORE jStorage!)
*
* Methods:
*
* -set(key, value)
* $.jStorage.set(key, value) -> saves a value
*
* -get(key[, default])
* value = $.jStorage.get(key [, default]) ->
* retrieves value if key exists, or default if it doesn't
*
* -deleteKey(key)
* $.jStorage.deleteKey(key) -> removes a key from the storage
*
* -flush()
* $.jStorage.flush() -> clears the cache
*
* <value> can be any JSON-able value, including objects and arrays.
*
*/
(function($){
if(!$ || !($.toJSON || Object.toJSON || window.JSON)){
throw new Error("jQuery, MooTools or Prototype needs to be loaded before jStorage!");
}
$.jStorage = {
/* Version number */
version: "0.1.2",
/* This is the object, that holds the cached values */
_storage: {},
/* Actual browser storage (localStorage or globalStorage['domain']) */
_storage_service: {jStorage:"{}"},
/* DOM element for older IE versions, holds userData behavior */
_storage_elm: null,
/* function to encode objects to JSON strings */
json_encode: $.toJSON || Object.toJSON || (window.JSON && JSON.encode),
/* function to decode objects from JSON strings */
json_decode: $.evalJSON || (window.JSON && JSON.decode) || function(str){
return String(str).evalJSON();
},
////////////////////////// PRIVATE METHODS ////////////////////////
/**
* Initialization function. Detects if the browser supports DOM Storage
* or userData behavior and behaves accordingly.
* @returns undefined
*/
_init: function(){
/* Check if browser supports localStorage */
if("localStorage" in window){
this._storage_service = window.localStorage;
}
/* Check if browser supports globalStorage */
else if("globalStorage" in window){
this._storage_service = window.globalStorage[document.domain]
}
/* Check if browser supports userData behavior */
else{
this._storage_elm = document.createElement('link');
if("addBehavior" in this._storage_elm){
/* Use a DOM element to act as userData storage */
this._storage_elm.style.behavior = 'url(#default#userData)';
/* userData element needs to be inserted into the DOM! */
document.getElementsByTagName('head')[0].appendChild(this._storage_elm);
this._storage_elm.load("jStorage");
try{
var data = this._storage_elm.getAttribute("jStorage")
}catch(E){var data = "{}"}
if(data && data.length){
this._storage_service.jStorage = data;
}
}else{
this._storage_elm = null;
return;
}
}
/* if jStorage string is retrieved, then decode it */
if("jStorage" in this._storage_service && this._storage_service.jStorage){
try{
this._storage = this.json_decode(this._storage_service.jStorage);
}catch(E){this._storage_service.jStorage = "{}";}
}else{
this._storage_service.jStorage = "{}";
}
},
/**
* This functions provides the "save" mechanism to store the jStorage object
* @returns undefined
*/
_save:function(){
if(this._storage_service){
try{
this._storage_service.jStorage = this.json_encode(this._storage);
}catch(E){/* probably cache is full, nothing is saved this way*/}
// If userData is used as the storage engine, additional
if(this._storage_elm){
try{
this._storage_elm.setAttribute("jStorage",this._storage_service.jStorage);
this._storage_elm.save("jStorage");
}catch(E){/* probably cache is full, nothing is saved this way*/}
}
}
},
/**
* Function checks if a key is set and is string or numberic
*/
_checkKey: function(key){
if(!key || (typeof key != "string" && typeof key != "number")){
throw new TypeError('Key name must be string or numeric');
}
return true;
},
////////////////////////// PUBLIC METHODS /////////////////////////
/**
* Sets a key's value.
* @param {String} key - Key to set. If this value is not set or not
* a string an exception is raised.
* @param value - Value to set. This can be any value that is JSON
* compatible (Numbers, Strings, Objects etc.).
* @returns the used value
*/
set: function(key, value){
this._checkKey(key);
this._storage[key] = value;
this._save();
return value;
},
/**
* Looks up a key in cache
* @param {String} key - Key to look up.
* @param {mixed} def - Default value to return, if key didn't exist.
* @returns the key value, default value or <null>
*/
get: function(key, def){
this._checkKey(key);
if(key in this._storage){
return this._storage[key];
}
return def?def:null;
},
/**
* Deletes a key from cache.
* @param {String} key - Key to delete.
* @returns true if key existed or false if it didn't
*/
deleteKey: function(key){
this._checkKey(key);
if(key in this._storage){
delete this._storage[key];
this._save();
return true;
}
return false;
},
/**
* Deletes everything in cache.
* @returns true
*/
flush: function(){
this._storage = {};
this._save();
return true;
}
};
// load saved data from browser
$.jStorage._init();
})(typeof jQuery != "undefined" && jQuery || $);
|