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- /**
- * Roundcube common js library
- *
- * This file is part of the Roundcube Webmail client
- *
- * @licstart The following is the entire license notice for the
- * JavaScript code in this file.
- *
- * Copyright (c) 2005-2014, The Roundcube Dev Team
- *
- * The JavaScript code in this page is free software: you can
- * redistribute it and/or modify it under the terms of the GNU
- * General Public License (GNU GPL) as published by the Free Software
- * Foundation, either version 3 of the License, or (at your option)
- * any later version. The code is distributed WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
- *
- * As additional permission under GNU GPL version 3 section 7, you
- * may distribute non-source (e.g., minimized or compacted) forms of
- * that code without the copy of the GNU GPL normally required by
- * section 4, provided you include this license notice and a URL
- * through which recipients can access the Corresponding Source.
- *
- * @licend The above is the entire license notice
- * for the JavaScript code in this file.
- */
-
- // Constants
- var CONTROL_KEY = 1;
- var SHIFT_KEY = 2;
- var CONTROL_SHIFT_KEY = 3;
-
- /**
- * Default browser check class
- * @constructor
- */
- function roundcube_browser()
- {
- var n = navigator;
-
- this.agent = n.userAgent;
- this.agent_lc = n.userAgent.toLowerCase();
- this.name = n.appName;
- this.vendor = n.vendor ? n.vendor : '';
- this.vendver = n.vendorSub ? parseFloat(n.vendorSub) : 0;
- this.product = n.product ? n.product : '';
- this.platform = String(n.platform).toLowerCase();
- this.lang = n.language ? n.language.substring(0,2) :
- n.browserLanguage ? n.browserLanguage.substring(0,2) :
- n.systemLanguage ? n.systemLanguage.substring(0,2) : 'en';
-
- this.win = this.platform.indexOf('win') >= 0;
- this.mac = this.platform.indexOf('mac') >= 0;
- this.linux = this.platform.indexOf('linux') >= 0;
- this.unix = this.platform.indexOf('unix') >= 0;
-
- this.dom = document.getElementById ? true : false;
- this.dom2 = document.addEventListener && document.removeEventListener;
-
- this.webkit = this.agent_lc.indexOf('applewebkit') > 0;
- this.ie = (document.all && !window.opera) || (this.win && this.agent_lc.indexOf('trident/') > 0);
-
- if (this.ie) {
- this.ie7 = n.appVersion.indexOf('MSIE 7') > 0;
- this.ie8 = n.appVersion.indexOf('MSIE 8') > 0;
- this.ie9 = n.appVersion.indexOf('MSIE 9') > 0;
- }
- else if (window.opera) {
- this.opera = true; // Opera < 15
- this.vendver = opera.version();
- }
- else {
- this.chrome = this.agent_lc.indexOf('chrome') > 0;
- this.opera = this.webkit && this.agent.indexOf(' OPR/') > 0; // Opera >= 15
- this.safari = !this.chrome && !this.opera && (this.webkit || this.agent_lc.indexOf('safari') > 0);
- this.konq = this.agent_lc.indexOf('konqueror') > 0;
- this.mz = this.dom && !this.chrome && !this.safari && !this.konq && !this.opera && this.agent.indexOf('Mozilla') >= 0;
- this.iphone = this.safari && (this.agent_lc.indexOf('iphone') > 0 || this.agent_lc.indexOf('ipod') > 0);
- this.ipad = this.safari && this.agent_lc.indexOf('ipad') > 0;
- }
-
- if (!this.vendver) {
- // common version strings
- this.vendver = /(opera|opr|khtml|chrome|safari|applewebkit|msie)(\s|\/)([0-9\.]+)/.test(this.agent_lc) ? parseFloat(RegExp.$3) : 0;
-
- // any other (Mozilla, Camino, IE>=11)
- if (!this.vendver)
- this.vendver = /rv:([0-9\.]+)/.test(this.agent) ? parseFloat(RegExp.$1) : 0;
- }
-
- // get real language out of safari's user agent
- if (this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/.test(this.agent_lc)))
- this.lang = RegExp.$1;
-
- this.tablet = /ipad|android|xoom|sch-i800|playbook|tablet|kindle/i.test(this.agent_lc);
- this.mobile = /iphone|ipod|blackberry|iemobile|opera mini|opera mobi|mobile/i.test(this.agent_lc);
- this.touch = this.mobile || this.tablet;
- this.cookies = n.cookieEnabled;
-
- // test for XMLHTTP support
- this.xmlhttp_test = function()
- {
- var activeX_test = new Function("try{var o=new ActiveXObject('Microsoft.XMLHTTP');return true;}catch(err){return false;}");
- this.xmlhttp = window.XMLHttpRequest || (('ActiveXObject' in window) && activeX_test());
- return this.xmlhttp;
- };
-
- // set class names to html tag according to the current user agent detection
- // this allows browser-specific css selectors like "html.chrome .someclass"
- this.set_html_class = function()
- {
- var classname = ' js';
-
- if (this.ie)
- classname += ' ie ie'+parseInt(this.vendver);
- else if (this.opera)
- classname += ' opera';
- else if (this.konq)
- classname += ' konqueror';
- else if (this.safari)
- classname += ' chrome';
- else if (this.chrome)
- classname += ' chrome';
- else if (this.mz)
- classname += ' mozilla';
-
- if (this.iphone)
- classname += ' iphone';
- else if (this.ipad)
- classname += ' ipad';
- else if (this.webkit)
- classname += ' webkit';
-
- if (this.mobile)
- classname += ' mobile';
- if (this.tablet)
- classname += ' tablet';
-
- if (document.documentElement)
- document.documentElement.className += classname;
- };
- };
-
-
- // static functions for DOM event handling
- var rcube_event = {
-
- /**
- * returns the event target element
- */
- get_target: function(e)
- {
- e = e || window.event;
- return e && e.target ? e.target : e.srcElement;
- },
-
- /**
- * returns the event key code
- */
- get_keycode: function(e)
- {
- e = e || window.event;
- return e && e.keyCode ? e.keyCode : (e && e.which ? e.which : 0);
- },
-
- /**
- * returns the event key code
- */
- get_button: function(e)
- {
- e = e || window.event;
- return e && e.button !== undefined ? e.button : (e && e.which ? e.which : 0);
- },
-
- /**
- * returns modifier key (constants defined at top of file)
- */
- get_modifier: function(e)
- {
- var opcode = 0;
- e = e || window.event;
-
- if (bw.mac && e)
- opcode += (e.metaKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
- else if (e)
- opcode += (e.ctrlKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
-
- return opcode;
- },
-
- /**
- * Return absolute mouse position of an event
- */
- get_mouse_pos: function(e)
- {
- if (!e) e = window.event;
- var mX = (e.pageX) ? e.pageX : e.clientX,
- mY = (e.pageY) ? e.pageY : e.clientY;
-
- if (document.body && document.all) {
- mX += document.body.scrollLeft;
- mY += document.body.scrollTop;
- }
-
- if (e._offset) {
- mX += e._offset.left;
- mY += e._offset.top;
- }
-
- return { x:mX, y:mY };
- },
-
- /**
- * Add an object method as event listener to a certain element
- */
- add_listener: function(p)
- {
- if (!p.object || !p.method) // not enough arguments
- return;
- if (!p.element)
- p.element = document;
-
- if (!p.object._rc_events)
- p.object._rc_events = {};
-
- var key = p.event + '*' + p.method;
- if (!p.object._rc_events[key])
- p.object._rc_events[key] = function(e){ return p.object[p.method](e); };
-
- if (p.element.addEventListener)
- p.element.addEventListener(p.event, p.object._rc_events[key], false);
- else if (p.element.attachEvent) {
- // IE allows multiple events with the same function to be applied to the same object
- // forcibly detach the event, then attach
- p.element.detachEvent('on'+p.event, p.object._rc_events[key]);
- p.element.attachEvent('on'+p.event, p.object._rc_events[key]);
- }
- else
- p.element['on'+p.event] = p.object._rc_events[key];
- },
-
- /**
- * Remove event listener
- */
- remove_listener: function(p)
- {
- if (!p.element)
- p.element = document;
-
- var key = p.event + '*' + p.method;
- if (p.object && p.object._rc_events && p.object._rc_events[key]) {
- if (p.element.removeEventListener)
- p.element.removeEventListener(p.event, p.object._rc_events[key], false);
- else if (p.element.detachEvent)
- p.element.detachEvent('on'+p.event, p.object._rc_events[key]);
- else
- p.element['on'+p.event] = null;
- }
- },
-
- /**
- * Prevent event propagation and bubbling
- */
- cancel: function(evt)
- {
- var e = evt ? evt : window.event;
-
- if (e.preventDefault)
- e.preventDefault();
- else
- e.returnValue = false;
-
- if (e.stopPropagation)
- e.stopPropagation();
-
- e.cancelBubble = true;
-
- return false;
- },
-
- /**
- * Determine whether the given event was trigered from keyboard
- */
- is_keyboard: function(e)
- {
- return e && (
- (e.pointerType !== undefined && e.pointerType !== 'mouse') || // IE 11+
- (e.mozInputSource && e.mozInputSource == e.MOZ_SOURCE_KEYBOARD) || // Firefox
- (e.offsetX === 0 && e.offsetY === 0) || // Opera
- (!e.pageX && (e.pageY || 0) <= 0 && !e.clientX && (e.clientY || 0) <= 0) || // others
- (bw.ie && rcube_event._last_keyboard_event && rcube_event._last_keyboard_event.target == e.target) // hack for IE <= 10
- );
- },
-
- /**
- * Accept event if triggered from keyboard action (e.g. <Enter>)
- */
- keyboard_only: function(e)
- {
- return rcube_event.is_keyboard(e) ? true : rcube_event.cancel(e);
- },
-
- touchevent: function(e)
- {
- return { pageX:e.pageX, pageY:e.pageY, offsetX:e.pageX - e.target.offsetLeft, offsetY:e.pageY - e.target.offsetTop, target:e.target, istouch:true };
- }
-
- };
-
-
- /**
- * rcmail objects event interface
- */
- function rcube_event_engine()
- {
- this._events = {};
- };
-
- rcube_event_engine.prototype = {
-
- /**
- * Setter for object event handlers
- *
- * @param {String} Event name
- * @param {Function} Handler function
- */
- addEventListener: function(evt, func, obj)
- {
- if (!this._events)
- this._events = {};
- if (!this._events[evt])
- this._events[evt] = [];
-
- this._events[evt].push({func:func, obj:obj ? obj : window});
-
- return this; // chainable
- },
-
- /**
- * Removes a specific event listener
- *
- * @param {String} Event name
- * @param {Int} Listener ID to remove
- */
- removeEventListener: function(evt, func, obj)
- {
- if (obj === undefined)
- obj = window;
-
- for (var h,i=0; this._events && this._events[evt] && i < this._events[evt].length; i++)
- if ((h = this._events[evt][i]) && h.func == func && h.obj == obj)
- this._events[evt][i] = null;
- },
-
- /**
- * This will execute all registered event handlers
- *
- * @param {String} Event to trigger
- * @param {Object} Event object/arguments
- */
- triggerEvent: function(evt, e)
- {
- var ret, h;
-
- if (e === undefined)
- e = this;
- else if (typeof e === 'object')
- e.event = evt;
-
- if (!this._event_exec)
- this._event_exec = {};
-
- if (this._events && this._events[evt] && !this._event_exec[evt]) {
- this._event_exec[evt] = true;
- for (var i=0; i < this._events[evt].length; i++) {
- if ((h = this._events[evt][i])) {
- if (typeof h.func === 'function')
- ret = h.func.call ? h.func.call(h.obj, e) : h.func(e);
- else if (typeof h.obj[h.func] === 'function')
- ret = h.obj[h.func](e);
-
- // cancel event execution
- if (ret !== undefined && !ret)
- break;
- }
- }
- if (ret && ret.event) {
- try {
- delete ret.event;
- } catch (err) {
- // IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
- $(ret).removeAttr('event');
- }
- }
- }
-
- delete this._event_exec[evt];
-
- if (e.event) {
- try {
- delete e.event;
- } catch (err) {
- // IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
- $(e).removeAttr('event');
- }
- }
-
- return ret;
- }
-
- }; // end rcube_event_engine.prototype
-
-
- // check if input is a valid email address
- // By Cal Henderson <cal@iamcal.com>
- // http://code.iamcal.com/php/rfc822/
- function rcube_check_email(input, inline)
- {
- if (input && window.RegExp) {
- var qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]',
- dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]',
- atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+',
- quoted_pair = '\\x5c[\\x00-\\x7f]',
- quoted_string = '\\x22('+qtext+'|'+quoted_pair+')*\\x22',
- 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}\\]',
- ipv6 = '\\[IPv6:[0-9a-f:.]+\\]',
- ip_addr = '(' + ipv4 + ')|(' + ipv6 + ')',
- // Use simplified domain matching, because we need to allow Unicode characters here
- // So, e-mail address should be validated also on server side after idn_to_ascii() use
- //domain_literal = '\\x5b('+dtext+'|'+quoted_pair+')*\\x5d',
- //sub_domain = '('+atom+'|'+domain_literal+')',
- // allow punycode/unicode top-level domain
- domain = '(('+ip_addr+')|(([^@\\x2e]+\\x2e)+([^\\x00-\\x40\\x5b-\\x60\\x7b-\\x7f]{2,}|xn--[a-z0-9]{2,})))',
- // ICANN e-mail test (http://idn.icann.org/E-mail_test)
- icann_domains = [
- '\\u0645\\u062b\\u0627\\u0644\\x2e\\u0625\\u062e\\u062a\\u0628\\u0627\\u0631',
- '\\u4f8b\\u5b50\\x2e\\u6d4b\\u8bd5',
- '\\u4f8b\\u5b50\\x2e\\u6e2c\\u8a66',
- '\\u03c0\\u03b1\\u03c1\\u03ac\\u03b4\\u03b5\\u03b9\\u03b3\\u03bc\\u03b1\\x2e\\u03b4\\u03bf\\u03ba\\u03b9\\u03bc\\u03ae',
- '\\u0909\\u0926\\u093e\\u0939\\u0930\\u0923\\x2e\\u092a\\u0930\\u0940\\u0915\\u094d\\u0937\\u093e',
- '\\u4f8b\\u3048\\x2e\\u30c6\\u30b9\\u30c8',
- '\\uc2e4\\ub840\\x2e\\ud14c\\uc2a4\\ud2b8',
- '\\u0645\\u062b\\u0627\\u0644\\x2e\\u0622\\u0632\\u0645\\u0627\\u06cc\\u0634\u06cc',
- '\\u043f\\u0440\\u0438\\u043c\\u0435\\u0440\\x2e\\u0438\\u0441\\u043f\\u044b\\u0442\\u0430\\u043d\\u0438\\u0435',
- '\\u0b89\\u0ba4\\u0bbe\\u0bb0\\u0ba3\\u0bae\\u0bcd\\x2e\\u0baa\\u0bb0\\u0bbf\\u0b9f\\u0bcd\\u0b9a\\u0bc8',
- '\\u05d1\\u05f2\\u05b7\\u05e9\\u05e4\\u05bc\\u05d9\\u05dc\\x2e\\u05d8\\u05e2\\u05e1\\u05d8'
- ],
- icann_addr = 'mailtest\\x40('+icann_domains.join('|')+')',
- word = '('+atom+'|'+quoted_string+')',
- delim = '[,;\\s\\n]',
- local_part = word+'(\\x2e'+word+')*',
- addr_spec = '(('+local_part+'\\x40'+domain+')|('+icann_addr+'))',
- reg1 = inline ? new RegExp('(^|<|'+delim+')'+addr_spec+'($|>|'+delim+')', 'i') : new RegExp('^'+addr_spec+'$', 'i');
-
- return reg1.test(input) ? true : false;
- }
-
- 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) {
- // encode UTF8 as btoa() may fail on some characters
- input = utf8_encode(input);
-
- if (typeof(window.btoa) === 'function') {
- try {
- return btoa(input);
- }
- catch (e) {};
- }
-
- 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') {
- 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;
- })();
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