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825 lines
23 KiB
JavaScript
825 lines
23 KiB
JavaScript
/**
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* Roundcube common js library
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*
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* This file is part of the Roundcube Webmail client
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*
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* @licstart The following is the entire license notice for the
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* JavaScript code in this file.
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*
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* Copyright (c) 2005-2014, The Roundcube Dev Team
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*
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* The JavaScript code in this page is free software: you can
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* redistribute it and/or modify it under the terms of the GNU
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* General Public License (GNU GPL) as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option)
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* any later version. The code is distributed WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
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*
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* As additional permission under GNU GPL version 3 section 7, you
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* may distribute non-source (e.g., minimized or compacted) forms of
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* that code without the copy of the GNU GPL normally required by
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* section 4, provided you include this license notice and a URL
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* through which recipients can access the Corresponding Source.
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*
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* @licend The above is the entire license notice
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* for the JavaScript code in this file.
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*/
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// Constants
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var CONTROL_KEY = 1;
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var SHIFT_KEY = 2;
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var CONTROL_SHIFT_KEY = 3;
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/**
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* Default browser check class
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* @constructor
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*/
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function roundcube_browser()
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{
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var n = navigator;
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this.agent = n.userAgent;
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this.agent_lc = n.userAgent.toLowerCase();
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this.name = n.appName;
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this.vendor = n.vendor ? n.vendor : '';
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this.vendver = n.vendorSub ? parseFloat(n.vendorSub) : 0;
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this.product = n.product ? n.product : '';
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this.platform = String(n.platform).toLowerCase();
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this.lang = n.language ? n.language.substring(0,2) :
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n.browserLanguage ? n.browserLanguage.substring(0,2) :
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n.systemLanguage ? n.systemLanguage.substring(0,2) : 'en';
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this.win = this.platform.indexOf('win') >= 0;
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this.mac = this.platform.indexOf('mac') >= 0;
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this.linux = this.platform.indexOf('linux') >= 0;
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this.unix = this.platform.indexOf('unix') >= 0;
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this.dom = document.getElementById ? true : false;
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this.dom2 = document.addEventListener && document.removeEventListener;
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this.webkit = this.agent_lc.indexOf('applewebkit') > 0;
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this.ie = (document.all && !window.opera) || (this.win && this.agent_lc.indexOf('trident/') > 0);
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if (this.ie) {
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this.ie7 = n.appVersion.indexOf('MSIE 7') > 0;
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this.ie8 = n.appVersion.indexOf('MSIE 8') > 0;
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this.ie9 = n.appVersion.indexOf('MSIE 9') > 0;
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}
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else if (window.opera) {
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this.opera = true; // Opera < 15
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this.vendver = opera.version();
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}
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else {
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this.chrome = this.agent_lc.indexOf('chrome') > 0;
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this.opera = this.webkit && this.agent.indexOf(' OPR/') > 0; // Opera >= 15
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this.safari = !this.chrome && !this.opera && (this.webkit || this.agent_lc.indexOf('safari') > 0);
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this.konq = this.agent_lc.indexOf('konqueror') > 0;
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this.mz = this.dom && !this.chrome && !this.safari && !this.konq && !this.opera && this.agent.indexOf('Mozilla') >= 0;
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this.iphone = this.safari && (this.agent_lc.indexOf('iphone') > 0 || this.agent_lc.indexOf('ipod') > 0);
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this.ipad = this.safari && this.agent_lc.indexOf('ipad') > 0;
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}
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if (!this.vendver) {
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// common version strings
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this.vendver = /(opera|opr|khtml|chrome|safari|applewebkit|msie)(\s|\/)([0-9\.]+)/.test(this.agent_lc) ? parseFloat(RegExp.$3) : 0;
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// any other (Mozilla, Camino, IE>=11)
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if (!this.vendver)
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this.vendver = /rv:([0-9\.]+)/.test(this.agent) ? parseFloat(RegExp.$1) : 0;
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}
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// get real language out of safari's user agent
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if (this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/.test(this.agent_lc)))
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this.lang = RegExp.$1;
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this.tablet = /ipad|android|xoom|sch-i800|playbook|tablet|kindle/i.test(this.agent_lc);
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this.mobile = /iphone|ipod|blackberry|iemobile|opera mini|opera mobi|mobile/i.test(this.agent_lc);
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this.touch = this.mobile || this.tablet;
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this.cookies = n.cookieEnabled;
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// test for XMLHTTP support
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this.xmlhttp_test = function()
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{
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var activeX_test = new Function("try{var o=new ActiveXObject('Microsoft.XMLHTTP');return true;}catch(err){return false;}");
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this.xmlhttp = window.XMLHttpRequest || (('ActiveXObject' in window) && activeX_test());
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return this.xmlhttp;
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};
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// set class names to html tag according to the current user agent detection
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// this allows browser-specific css selectors like "html.chrome .someclass"
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this.set_html_class = function()
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{
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var classname = ' js';
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if (this.ie)
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classname += ' ie ie'+parseInt(this.vendver);
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else if (this.opera)
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classname += ' opera';
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else if (this.konq)
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classname += ' konqueror';
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else if (this.safari)
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classname += ' chrome';
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else if (this.chrome)
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classname += ' chrome';
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else if (this.mz)
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classname += ' mozilla';
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if (this.iphone)
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classname += ' iphone';
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else if (this.ipad)
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classname += ' ipad';
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else if (this.webkit)
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classname += ' webkit';
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if (this.mobile)
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classname += ' mobile';
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if (this.tablet)
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classname += ' tablet';
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if (document.documentElement)
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document.documentElement.className += classname;
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};
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};
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// static functions for DOM event handling
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var rcube_event = {
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/**
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* returns the event target element
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*/
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get_target: function(e)
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{
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e = e || window.event;
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return e && e.target ? e.target : e.srcElement;
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},
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/**
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* returns the event key code
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*/
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get_keycode: function(e)
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{
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e = e || window.event;
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return e && e.keyCode ? e.keyCode : (e && e.which ? e.which : 0);
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},
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/**
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* returns the event key code
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*/
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get_button: function(e)
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{
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e = e || window.event;
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return e && e.button !== undefined ? e.button : (e && e.which ? e.which : 0);
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},
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/**
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* returns modifier key (constants defined at top of file)
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*/
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get_modifier: function(e)
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{
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var opcode = 0;
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e = e || window.event;
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if (bw.mac && e)
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opcode += (e.metaKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
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else if (e)
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opcode += (e.ctrlKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
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return opcode;
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},
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/**
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* Return absolute mouse position of an event
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*/
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get_mouse_pos: function(e)
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{
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if (!e) e = window.event;
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var mX = (e.pageX) ? e.pageX : e.clientX,
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mY = (e.pageY) ? e.pageY : e.clientY;
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if (document.body && document.all) {
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mX += document.body.scrollLeft;
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mY += document.body.scrollTop;
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}
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if (e._offset) {
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mX += e._offset.left;
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mY += e._offset.top;
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}
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return { x:mX, y:mY };
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},
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/**
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* Add an object method as event listener to a certain element
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*/
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add_listener: function(p)
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{
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if (!p.object || !p.method) // not enough arguments
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return;
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if (!p.element)
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p.element = document;
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if (!p.object._rc_events)
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p.object._rc_events = {};
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var key = p.event + '*' + p.method;
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if (!p.object._rc_events[key])
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p.object._rc_events[key] = function(e){ return p.object[p.method](e); };
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if (p.element.addEventListener)
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p.element.addEventListener(p.event, p.object._rc_events[key], false);
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else if (p.element.attachEvent) {
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// IE allows multiple events with the same function to be applied to the same object
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// forcibly detach the event, then attach
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p.element.detachEvent('on'+p.event, p.object._rc_events[key]);
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p.element.attachEvent('on'+p.event, p.object._rc_events[key]);
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}
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else
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p.element['on'+p.event] = p.object._rc_events[key];
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},
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/**
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* Remove event listener
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*/
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remove_listener: function(p)
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{
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if (!p.element)
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p.element = document;
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var key = p.event + '*' + p.method;
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if (p.object && p.object._rc_events && p.object._rc_events[key]) {
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if (p.element.removeEventListener)
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p.element.removeEventListener(p.event, p.object._rc_events[key], false);
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else if (p.element.detachEvent)
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p.element.detachEvent('on'+p.event, p.object._rc_events[key]);
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else
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p.element['on'+p.event] = null;
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}
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},
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/**
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* Prevent event propagation and bubbling
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*/
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cancel: function(evt)
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{
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var e = evt ? evt : window.event;
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if (e.preventDefault)
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e.preventDefault();
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else
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e.returnValue = false;
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if (e.stopPropagation)
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e.stopPropagation();
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e.cancelBubble = true;
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return false;
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},
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/**
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* Determine whether the given event was trigered from keyboard
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*/
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is_keyboard: function(e)
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{
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return e && (
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(e.pointerType !== undefined && e.pointerType !== 'mouse') || // IE 11+
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(e.mozInputSource && e.mozInputSource == e.MOZ_SOURCE_KEYBOARD) || // Firefox
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(e.offsetX === 0 && e.offsetY === 0) || // Opera
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(!e.pageX && (e.pageY || 0) <= 0 && !e.clientX && (e.clientY || 0) <= 0) || // others
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(bw.ie && rcube_event._last_keyboard_event && rcube_event._last_keyboard_event.target == e.target) // hack for IE <= 10
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);
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},
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/**
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* Accept event if triggered from keyboard action (e.g. <Enter>)
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*/
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keyboard_only: function(e)
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{
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return rcube_event.is_keyboard(e) ? true : rcube_event.cancel(e);
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},
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touchevent: function(e)
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{
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return { pageX:e.pageX, pageY:e.pageY, offsetX:e.pageX - e.target.offsetLeft, offsetY:e.pageY - e.target.offsetTop, target:e.target, istouch:true };
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}
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};
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/**
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* rcmail objects event interface
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*/
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function rcube_event_engine()
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{
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this._events = {};
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};
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rcube_event_engine.prototype = {
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/**
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* Setter for object event handlers
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*
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* @param {String} Event name
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* @param {Function} Handler function
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*/
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addEventListener: function(evt, func, obj)
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{
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if (!this._events)
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this._events = {};
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if (!this._events[evt])
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this._events[evt] = [];
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this._events[evt].push({func:func, obj:obj ? obj : window});
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return this; // chainable
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},
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/**
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* Removes a specific event listener
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*
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* @param {String} Event name
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* @param {Int} Listener ID to remove
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*/
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removeEventListener: function(evt, func, obj)
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{
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if (obj === undefined)
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obj = window;
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for (var h,i=0; this._events && this._events[evt] && i < this._events[evt].length; i++)
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if ((h = this._events[evt][i]) && h.func == func && h.obj == obj)
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this._events[evt][i] = null;
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},
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/**
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* This will execute all registered event handlers
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*
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* @param {String} Event to trigger
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* @param {Object} Event object/arguments
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*/
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triggerEvent: function(evt, e)
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{
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var ret, h;
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if (e === undefined)
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e = this;
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else if (typeof e === 'object')
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e.event = evt;
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if (!this._event_exec)
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this._event_exec = {};
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if (this._events && this._events[evt] && !this._event_exec[evt]) {
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this._event_exec[evt] = true;
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for (var i=0; i < this._events[evt].length; i++) {
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if ((h = this._events[evt][i])) {
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if (typeof h.func === 'function')
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ret = h.func.call ? h.func.call(h.obj, e) : h.func(e);
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else if (typeof h.obj[h.func] === 'function')
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ret = h.obj[h.func](e);
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// cancel event execution
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if (ret !== undefined && !ret)
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break;
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}
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}
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if (ret && ret.event) {
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try {
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delete ret.event;
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} catch (err) {
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// IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
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$(ret).removeAttr('event');
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}
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}
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}
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delete this._event_exec[evt];
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if (e.event) {
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try {
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delete e.event;
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} catch (err) {
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// IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
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$(e).removeAttr('event');
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}
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}
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return ret;
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}
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}; // end rcube_event_engine.prototype
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// check if input is a valid email address
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// By Cal Henderson <cal@iamcal.com>
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// http://code.iamcal.com/php/rfc822/
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function rcube_check_email(input, inline)
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{
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if (input && window.RegExp) {
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var qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]',
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dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]',
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atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+',
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quoted_pair = '\\x5c[\\x00-\\x7f]',
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quoted_string = '\\x22('+qtext+'|'+quoted_pair+')*\\x22',
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ipv4 = '\\[(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}\\]',
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ipv6 = '\\[IPv6:[0-9a-f:.]+\\]',
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ip_addr = '(' + ipv4 + ')|(' + ipv6 + ')',
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// Use simplified domain matching, because we need to allow Unicode characters here
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// So, e-mail address should be validated also on server side after idn_to_ascii() use
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//domain_literal = '\\x5b('+dtext+'|'+quoted_pair+')*\\x5d',
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//sub_domain = '('+atom+'|'+domain_literal+')',
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// allow punycode/unicode top-level domain
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domain = '(('+ip_addr+')|(([^@\\x2e]+\\x2e)+([^\\x00-\\x40\\x5b-\\x60\\x7b-\\x7f]{2,}|xn--[a-z0-9]{2,})))',
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// ICANN e-mail test (http://idn.icann.org/E-mail_test)
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icann_domains = [
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'\\u0645\\u062b\\u0627\\u0644\\x2e\\u0625\\u062e\\u062a\\u0628\\u0627\\u0631',
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'\\u4f8b\\u5b50\\x2e\\u6d4b\\u8bd5',
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'\\u4f8b\\u5b50\\x2e\\u6e2c\\u8a66',
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'\\u03c0\\u03b1\\u03c1\\u03ac\\u03b4\\u03b5\\u03b9\\u03b3\\u03bc\\u03b1\\x2e\\u03b4\\u03bf\\u03ba\\u03b9\\u03bc\\u03ae',
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'\\u0909\\u0926\\u093e\\u0939\\u0930\\u0923\\x2e\\u092a\\u0930\\u0940\\u0915\\u094d\\u0937\\u093e',
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'\\u4f8b\\u3048\\x2e\\u30c6\\u30b9\\u30c8',
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'\\uc2e4\\ub840\\x2e\\ud14c\\uc2a4\\ud2b8',
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'\\u0645\\u062b\\u0627\\u0644\\x2e\\u0622\\u0632\\u0645\\u0627\\u06cc\\u0634\u06cc',
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'\\u043f\\u0440\\u0438\\u043c\\u0435\\u0440\\x2e\\u0438\\u0441\\u043f\\u044b\\u0442\\u0430\\u043d\\u0438\\u0435',
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'\\u0b89\\u0ba4\\u0bbe\\u0bb0\\u0ba3\\u0bae\\u0bcd\\x2e\\u0baa\\u0bb0\\u0bbf\\u0b9f\\u0bcd\\u0b9a\\u0bc8',
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'\\u05d1\\u05f2\\u05b7\\u05e9\\u05e4\\u05bc\\u05d9\\u05dc\\x2e\\u05d8\\u05e2\\u05e1\\u05d8'
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],
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icann_addr = 'mailtest\\x40('+icann_domains.join('|')+')',
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word = '('+atom+'|'+quoted_string+')',
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delim = '[,;\s\n]',
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local_part = word+'(\\x2e'+word+')*',
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addr_spec = '(('+local_part+'\\x40'+domain+')|('+icann_addr+'))',
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reg1 = inline ? new RegExp('(^|<|'+delim+')'+addr_spec+'($|>|'+delim+')', 'i') : new RegExp('^'+addr_spec+'$', 'i');
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return reg1.test(input) ? true : false;
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}
|
|
|
|
return false;
|
|
};
|
|
|
|
// recursively copy an object
|
|
function rcube_clone_object(obj)
|
|
{
|
|
var out = {};
|
|
|
|
for (var key in obj) {
|
|
if (obj[key] && typeof obj[key] === 'object')
|
|
out[key] = rcube_clone_object(obj[key]);
|
|
else
|
|
out[key] = obj[key];
|
|
}
|
|
|
|
return out;
|
|
};
|
|
|
|
// make a string URL safe (and compatible with PHP's rawurlencode())
|
|
function urlencode(str)
|
|
{
|
|
if (window.encodeURIComponent)
|
|
return encodeURIComponent(str).replace('*', '%2A');
|
|
|
|
return escape(str)
|
|
.replace('+', '%2B')
|
|
.replace('*', '%2A')
|
|
.replace('/', '%2F')
|
|
.replace('@', '%40');
|
|
};
|
|
|
|
|
|
// get any type of html objects by id/name
|
|
function rcube_find_object(id, d)
|
|
{
|
|
var n, f, obj, e;
|
|
|
|
if (!d) d = document;
|
|
|
|
if (d.getElementById)
|
|
if (obj = d.getElementById(id))
|
|
return obj;
|
|
|
|
if (!obj && d.getElementsByName && (e = d.getElementsByName(id)))
|
|
obj = e[0];
|
|
|
|
if (!obj && d.all)
|
|
obj = d.all[id];
|
|
|
|
if (!obj && d.images.length)
|
|
obj = d.images[id];
|
|
|
|
if (!obj && d.forms.length) {
|
|
for (f=0; f<d.forms.length; f++) {
|
|
if (d.forms[f].name == id)
|
|
obj = d.forms[f];
|
|
else if(d.forms[f].elements[id])
|
|
obj = d.forms[f].elements[id];
|
|
}
|
|
}
|
|
|
|
if (!obj && d.layers) {
|
|
if (d.layers[id])
|
|
obj = d.layers[id];
|
|
for (n=0; !obj && n<d.layers.length; n++)
|
|
obj = rcube_find_object(id, d.layers[n].document);
|
|
}
|
|
|
|
return obj;
|
|
};
|
|
|
|
// determine whether the mouse is over the given object or not
|
|
function rcube_mouse_is_over(ev, obj)
|
|
{
|
|
var mouse = rcube_event.get_mouse_pos(ev),
|
|
pos = $(obj).offset();
|
|
|
|
return (mouse.x >= pos.left) && (mouse.x < (pos.left + obj.offsetWidth)) &&
|
|
(mouse.y >= pos.top) && (mouse.y < (pos.top + obj.offsetHeight));
|
|
};
|
|
|
|
|
|
// cookie functions by GoogieSpell
|
|
function setCookie(name, value, expires, path, domain, secure)
|
|
{
|
|
var curCookie = name + "=" + escape(value) +
|
|
(expires ? "; expires=" + expires.toGMTString() : "") +
|
|
(path ? "; path=" + path : "") +
|
|
(domain ? "; domain=" + domain : "") +
|
|
(secure ? "; secure" : "");
|
|
|
|
document.cookie = curCookie;
|
|
};
|
|
|
|
function getCookie(name)
|
|
{
|
|
var dc = document.cookie,
|
|
prefix = name + "=",
|
|
begin = dc.indexOf("; " + prefix);
|
|
|
|
if (begin == -1) {
|
|
begin = dc.indexOf(prefix);
|
|
if (begin != 0)
|
|
return null;
|
|
}
|
|
else {
|
|
begin += 2;
|
|
}
|
|
|
|
var end = dc.indexOf(";", begin);
|
|
if (end == -1)
|
|
end = dc.length;
|
|
|
|
return unescape(dc.substring(begin + prefix.length, end));
|
|
};
|
|
|
|
// deprecated aliases, to be removed, use rcmail.set_cookie/rcmail.get_cookie
|
|
roundcube_browser.prototype.set_cookie = setCookie;
|
|
roundcube_browser.prototype.get_cookie = getCookie;
|
|
|
|
var bw = new roundcube_browser();
|
|
bw.set_html_class();
|
|
|
|
|
|
// Add escape() method to RegExp object
|
|
// http://dev.rubyonrails.org/changeset/7271
|
|
RegExp.escape = function(str)
|
|
{
|
|
return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
|
|
};
|
|
|
|
// Extend Date prototype to detect Standard timezone without DST
|
|
// from http://www.michaelapproved.com/articles/timezone-detect-and-ignore-daylight-saving-time-dst/
|
|
Date.prototype.getStdTimezoneOffset = function()
|
|
{
|
|
var m = 12,
|
|
d = new Date(null, m, 1),
|
|
tzo = d.getTimezoneOffset();
|
|
|
|
while (--m) {
|
|
d.setUTCMonth(m);
|
|
if (tzo != d.getTimezoneOffset()) {
|
|
return Math.max(tzo, d.getTimezoneOffset());
|
|
}
|
|
}
|
|
|
|
return tzo;
|
|
}
|
|
|
|
// define String's startsWith() method for old browsers
|
|
if (!String.prototype.startsWith) {
|
|
String.prototype.startsWith = function(search, position) {
|
|
position = position || 0;
|
|
return this.slice(position, search.length) === search;
|
|
};
|
|
}
|
|
|
|
// array utility function
|
|
jQuery.last = function(arr) {
|
|
return arr && arr.length ? arr[arr.length-1] : undefined;
|
|
}
|
|
|
|
// jQuery plugin to emulate HTML5 placeholder attributes on input elements
|
|
jQuery.fn.placeholder = function(text) {
|
|
return this.each(function() {
|
|
var active = false, elem = $(this);
|
|
this.title = text;
|
|
|
|
// Try HTML5 placeholder attribute first
|
|
if ('placeholder' in this) {
|
|
elem.attr('placeholder', text);
|
|
}
|
|
// Fallback to Javascript emulation of placeholder
|
|
else {
|
|
this._placeholder = text;
|
|
elem.blur(function(e) {
|
|
if ($.trim(elem.val()) == "")
|
|
elem.val(text);
|
|
elem.triggerHandler('change');
|
|
})
|
|
.focus(function(e) {
|
|
if ($.trim(elem.val()) == text)
|
|
elem.val("");
|
|
elem.triggerHandler('change');
|
|
})
|
|
.change(function(e) {
|
|
var active = elem.val() == text;
|
|
elem[(active ? 'addClass' : 'removeClass')]('placeholder').attr('spellcheck', active);
|
|
});
|
|
|
|
// Do not blur currently focused element (catch exception: #1489008)
|
|
try { active = this == document.activeElement; } catch(e) {}
|
|
if (!active)
|
|
elem.blur();
|
|
}
|
|
});
|
|
};
|
|
|
|
// function to parse query string into an object
|
|
rcube_parse_query = function(query)
|
|
{
|
|
if (!query)
|
|
return {};
|
|
|
|
var params = {}, e, k, v,
|
|
re = /([^&=]+)=?([^&]*)/g,
|
|
decodeRE = /\+/g, // Regex for replacing addition symbol with a space
|
|
decode = function (str) { return decodeURIComponent(str.replace(decodeRE, ' ')); };
|
|
|
|
query = query.replace(/\?/, '');
|
|
|
|
while (e = re.exec(query)) {
|
|
k = decode(e[1]);
|
|
v = decode(e[2]);
|
|
|
|
if (k.substring(k.length - 2) === '[]') {
|
|
k = k.substring(0, k.length - 2);
|
|
(params[k] || (params[k] = [])).push(v);
|
|
}
|
|
else
|
|
params[k] = v;
|
|
}
|
|
|
|
return params;
|
|
};
|
|
|
|
|
|
// Base64 code from Tyler Akins -- http://rumkin.com
|
|
var Base64 = (function () {
|
|
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
|
|
|
|
// private method for UTF-8 encoding
|
|
var utf8_encode = function(string) {
|
|
string = string.replace(/\r\n/g, "\n");
|
|
var utftext = '';
|
|
|
|
for (var n = 0; n < string.length; n++) {
|
|
var c = string.charCodeAt(n);
|
|
|
|
if (c < 128) {
|
|
utftext += String.fromCharCode(c);
|
|
}
|
|
else if(c > 127 && c < 2048) {
|
|
utftext += String.fromCharCode((c >> 6) | 192);
|
|
utftext += String.fromCharCode((c & 63) | 128);
|
|
}
|
|
else {
|
|
utftext += String.fromCharCode((c >> 12) | 224);
|
|
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
|
|
utftext += String.fromCharCode((c & 63) | 128);
|
|
}
|
|
}
|
|
|
|
return utftext;
|
|
};
|
|
|
|
// private method for UTF-8 decoding
|
|
var utf8_decode = function (utftext) {
|
|
var i = 0, string = '', c = c2 = c3 = 0;
|
|
|
|
while (i < utftext.length) {
|
|
c = utftext.charCodeAt(i);
|
|
if (c < 128) {
|
|
string += String.fromCharCode(c);
|
|
i++;
|
|
}
|
|
else if (c > 191 && c < 224) {
|
|
c2 = utftext.charCodeAt(i + 1);
|
|
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
|
|
i += 2;
|
|
}
|
|
else {
|
|
c2 = utftext.charCodeAt(i + 1);
|
|
c3 = utftext.charCodeAt(i + 2);
|
|
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
|
|
i += 3;
|
|
}
|
|
}
|
|
|
|
return string;
|
|
};
|
|
|
|
var obj = {
|
|
/**
|
|
* Encodes a string in base64
|
|
* @param {String} input The string to encode in base64.
|
|
*/
|
|
encode: function (input) {
|
|
if (typeof(window.btoa) === 'function') {
|
|
// it may fail on unicode characters, the fallback can handle them
|
|
try {
|
|
return btoa(input);
|
|
}
|
|
catch (e) {};
|
|
}
|
|
|
|
input = utf8_encode(input);
|
|
|
|
var chr1, chr2, chr3, enc1, enc2, enc3, enc4, i = 0, output = '', len = input.length;
|
|
|
|
while (i < len) {
|
|
chr1 = input.charCodeAt(i++);
|
|
chr2 = input.charCodeAt(i++);
|
|
chr3 = input.charCodeAt(i++);
|
|
|
|
enc1 = chr1 >> 2;
|
|
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
|
|
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
|
|
enc4 = chr3 & 63;
|
|
|
|
if (isNaN(chr2))
|
|
enc3 = enc4 = 64;
|
|
else if (isNaN(chr3))
|
|
enc4 = 64;
|
|
|
|
output = output
|
|
+ keyStr.charAt(enc1) + keyStr.charAt(enc2)
|
|
+ keyStr.charAt(enc3) + keyStr.charAt(enc4);
|
|
}
|
|
|
|
return output;
|
|
},
|
|
|
|
/**
|
|
* Decodes a base64 string.
|
|
* @param {String} input The string to decode.
|
|
*/
|
|
decode: function (input) {
|
|
if (typeof(window.atob) === 'function') {
|
|
// it may fail on unicode characters, the fallback can handle them
|
|
try {
|
|
return utf8_decode(atob(input));
|
|
}
|
|
catch (e) {};
|
|
}
|
|
|
|
var chr1, chr2, chr3, enc1, enc2, enc3, enc4, len, i = 0, output = '';
|
|
|
|
// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
|
|
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
|
|
len = input.length;
|
|
|
|
while (i < len) {
|
|
enc1 = keyStr.indexOf(input.charAt(i++));
|
|
enc2 = keyStr.indexOf(input.charAt(i++));
|
|
enc3 = keyStr.indexOf(input.charAt(i++));
|
|
enc4 = keyStr.indexOf(input.charAt(i++));
|
|
|
|
chr1 = (enc1 << 2) | (enc2 >> 4);
|
|
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
|
|
chr3 = ((enc3 & 3) << 6) | enc4;
|
|
|
|
output = output + String.fromCharCode(chr1);
|
|
|
|
if (enc3 != 64)
|
|
output = output + String.fromCharCode(chr2);
|
|
if (enc4 != 64)
|
|
output = output + String.fromCharCode(chr3);
|
|
}
|
|
|
|
return utf8_decode(output);
|
|
}
|
|
};
|
|
|
|
return obj;
|
|
})();
|