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roundcubemail/program/js/common.js

832 lines
24 KiB
JavaScript

19 years ago
/*
+-----------------------------------------------------------------------+
| Roundcube common js library |
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| |
| This file is part of the Roundcube web development suite |
| Copyright (C) 2005-2012, The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
19 years ago
| |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
*/
// Constants
var CONTROL_KEY = 1;
var SHIFT_KEY = 2;
var CONTROL_SHIFT_KEY = 3;
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/**
* Default browser check class
* @constructor
*/
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function roundcube_browser()
{
var n = navigator;
this.ver = parseFloat(n.appVersion);
this.appver = n.appVersion;
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';
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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);
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this.dom = document.getElementById ? true : false;
this.dom2 = (document.addEventListener && document.removeEventListener);
this.ie = (document.all && !window.opera);
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this.ie4 = (this.ie && !this.dom);
this.ie5 = (this.dom && this.appver.indexOf('MSIE 5')>0);
this.ie8 = (this.dom && this.appver.indexOf('MSIE 8')>0);
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this.ie9 = (this.dom && this.appver.indexOf('MSIE 9')>0);
this.ie7 = (this.dom && this.appver.indexOf('MSIE 7')>0);
this.ie6 = (this.dom && !this.ie8 && !this.ie7 && this.appver.indexOf('MSIE 6')>0);
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this.ns = ((this.ver < 5 && this.name == 'Netscape') || (this.ver >= 5 && this.vendor.indexOf('Netscape') >= 0));
this.chrome = (this.agent_lc.indexOf('chrome') > 0);
this.safari = (!this.chrome && (this.agent_lc.indexOf('safari') > 0 || this.agent_lc.indexOf('applewebkit') > 0));
this.konq = (this.agent_lc.indexOf('konqueror') > 0);
this.mz = (this.dom && !this.ie && !this.ns && !this.chrome && !this.safari && !this.konq && this.agent.indexOf('Mozilla') >= 0);
this.iphone = (this.safari && this.agent_lc.indexOf('iphone') > 0);
this.ipad = (this.safari && this.agent_lc.indexOf('ipad') > 0);
this.opera = window.opera ? true : false;
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if (this.opera && window.RegExp)
this.vendver = (/opera(\s|\/)([0-9\.]+)/.test(this.agent_lc)) ? parseFloat(RegExp.$2) : -1;
else if (this.chrome && window.RegExp)
this.vendver = (/chrome\/([0-9\.]+)/.test(this.agent_lc)) ? parseFloat(RegExp.$1) : 0;
else if (!this.vendver && this.safari)
this.vendver = (/(safari|applewebkit)\/([0-9]+)/.test(this.agent_lc)) ? parseInt(RegExp.$2) : 0;
else if ((!this.vendver && this.mz) || this.agent.indexOf('Camino')>0)
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this.vendver = (/rv:([0-9\.]+)/.test(this.agent)) ? parseFloat(RegExp.$1) : 0;
else if (this.ie && window.RegExp)
this.vendver = (/msie\s+([0-9\.]+)/.test(this.agent_lc)) ? parseFloat(RegExp.$1) : 0;
else if (this.konq && window.RegExp)
this.vendver = (/khtml\/([0-9\.]+)/.test(this.agent_lc)) ? parseFloat(RegExp.$1) : 0;
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// get real language out of safari's user agent
if (this.safari && (/;\s+([a-z]{2})-[a-z]{2}\)/.test(this.agent_lc)))
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this.lang = RegExp.$1;
this.mobile = this.agent_lc.match(/iphone|ipad|ipod|android|blackberry|iemobile|opera mini|opera mobi/);
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this.dhtml = ((this.ie4 && this.win) || this.ie5 || this.ie6 || this.ns4 || this.mz);
this.vml = (this.win && this.ie && this.dom && !this.opera);
this.pngalpha = (this.mz || (this.opera && this.vendver >= 6) || (this.ie && this.mac && this.vendver >= 5) ||
(this.ie && this.win && this.vendver >= 5.5) || this.safari);
this.opacity = (this.mz || (this.ie && this.vendver >= 5.5 && !this.opera) || (this.safari && this.vendver >= 100));
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 || (window.ActiveXObject && 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';
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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.safari || this.chrome)
classname += ' webkit';
if (this.mobile)
classname += ' mobile';
if (document.documentElement)
document.documentElement.className += classname;
};
};
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// 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 bubbeling
*/
cancel: function(evt)
{
var e = evt ? evt : window.event;
if (e.preventDefault)
e.preventDefault();
if (e.stopPropagation)
e.stopPropagation();
e.cancelBubble = true;
e.returnValue = false;
return false;
},
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 };
}
};
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/**
* 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
* @return Listener ID (used to remove this handler later on)
*/
addEventListener: function(evt, func, obj)
{
if (!this._events)
this._events = {};
if (!this._events[evt])
this._events[evt] = [];
var e = {func:func, obj:obj ? obj : window};
this._events[evt][this._events[evt].length] = e;
},
/**
* 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._events && this._events[evt] && !this._event_exec) {
this._event_exec = 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');
}
}
}
this._event_exec = false;
if (e.event) {
try {
delete e.event;
} catch (err) {
// IE6-7 doesn't support deleting HTMLFormElement attributes (#1488017)
$(e).removeAttr('event');
}
}
return ret;
}
}; // end rcube_event_engine.prototype
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/**
* Roundcube generic layer (floating box) class
*
* @constructor
*/
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function rcube_layer(id, attributes)
{
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this.name = id;
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// create a new layer in the current document
this.create = function(arg)
{
var l = (arg.x) ? arg.x : 0,
t = (arg.y) ? arg.y : 0,
w = arg.width,
h = arg.height,
z = arg.zindex,
vis = arg.vis,
parent = arg.parent,
obj = document.createElement('DIV');
obj.id = this.name;
obj.style.position = 'absolute';
obj.style.visibility = (vis) ? (vis==2) ? 'inherit' : 'visible' : 'hidden';
obj.style.left = l+'px';
obj.style.top = t+'px';
if (w)
obj.style.width = w.toString().match(/\%$/) ? w : w+'px';
if (h)
obj.style.height = h.toString().match(/\%$/) ? h : h+'px';
if (z)
obj.style.zIndex = z;
if (parent)
parent.appendChild(obj);
else
document.body.appendChild(obj);
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this.elm = obj;
};
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// create new layer
if (attributes != null) {
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this.create(attributes);
this.name = this.elm.id;
}
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else // just refer to the object
this.elm = document.getElementById(id);
if (!this.elm)
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return false;
// ********* layer object properties *********
this.css = this.elm.style;
this.event = this.elm;
this.width = this.elm.offsetWidth;
this.height = this.elm.offsetHeight;
this.x = parseInt(this.elm.offsetLeft);
this.y = parseInt(this.elm.offsetTop);
this.visible = (this.css.visibility=='visible' || this.css.visibility=='show' || this.css.visibility=='inherit') ? true : false;
// ********* layer object methods *********
// move the layer to a specific position
this.move = function(x, y)
{
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this.x = x;
this.y = y;
this.css.left = Math.round(this.x)+'px';
this.css.top = Math.round(this.y)+'px';
};
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// change the layers width and height
this.resize = function(w,h)
{
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this.css.width = w+'px';
this.css.height = h+'px';
this.width = w;
this.height = h;
};
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// show or hide the layer
this.show = function(a)
{
if(a == 1) {
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this.css.visibility = 'visible';
this.visible = true;
}
else if(a == 2) {
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this.css.visibility = 'inherit';
this.visible = true;
}
else {
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this.css.visibility = 'hidden';
this.visible = false;
}
};
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// write new content into a Layer
this.write = function(cont)
{
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this.elm.innerHTML = cont;
};
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};
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// 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] = clone_object(obj[key]);
else
out[key] = obj[key];
}
return out;
};
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// 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');
};
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// get any type of html objects by id/name
function rcube_find_object(id, d)
{
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var n, f, obj, e;
if(!d) d = document;
if(d.getElementsByName && (e = d.getElementsByName(id)))
obj = e[0];
if(!obj && d.getElementById)
obj = d.getElementById(id);
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++) {
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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);
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}
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 = $(obj).offset();
return ((mouse.x >= pos.left) && (mouse.x < (pos.left + obj.offsetWidth)) &&
(mouse.y >= pos.top) && (mouse.y < (pos.top + obj.offsetHeight)));
};
// cookie functions by GoogieSpell
function setCookie(name, value, expires, path, domain, secure)
{
var curCookie = name + "=" + escape(value) +
(expires ? "; expires=" + expires.toGMTString() : "") +
(path ? "; path=" + path : "") +
(domain ? "; domain=" + domain : "") +
(secure ? "; secure" : "");
document.cookie = curCookie;
};
function getCookie(name)
{
var dc = document.cookie,
prefix = name + "=",
begin = dc.indexOf("; " + prefix);
if (begin == -1) {
begin = dc.indexOf(prefix);
if (begin != 0)
return null;
}
else {
begin += 2;
}
var end = dc.indexOf(";", begin);
if (end == -1)
end = dc.length;
return unescape(dc.substring(begin + prefix.length, end));
};
// deprecated aliases, to be removed, use rcmail.set_cookie/rcmail.get_cookie
roundcube_browser.prototype.set_cookie = setCookie;
roundcube_browser.prototype.get_cookie = getCookie;
// tiny replacement for Firebox functionality
function rcube_console()
{
this.log = function(msg)
{
var box = rcube_find_object('dbgconsole');
if (box) {
if (msg.charAt(msg.length-1)=='\n')
msg += '--------------------------------------\n';
else
msg += '\n--------------------------------------\n';
// Konqueror doesn't allow to just change the value of hidden element
if (bw.konq) {
box.innerText += msg;
box.value = box.innerText;
} else
box.value += msg;
}
};
this.reset = function()
{
var box = rcube_find_object('dbgconsole');
if (box)
box.innerText = box.value = '';
};
};
var bw = new roundcube_browser();
bw.set_html_class();
// Add escape() method to RegExp object
// http://dev.rubyonrails.org/changeset/7271
RegExp.escape = function(str)
{
return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/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;
}
// Make getElementById() case-sensitive on IE
if (bw.ie) {
document._getElementById = document.getElementById;
document.getElementById = function(id) {
var i = 0, obj = document._getElementById(id);
15 years ago
if (obj && obj.id != id)
while ((obj = document.all[i]) && obj.id != id)
i++;
return obj;
}
}
// 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();
}
});
};
// This code was written by Tyler Akins and has been placed in the
// public domain. It would be nice if you left this header intact.
// Base64 code from Tyler Akins -- http://rumkin.com
var Base64 = (function () {
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var obj = {
/**
* Encodes a string in base64
* @param {String} input The string to encode in base64.
*/
encode: function (input) {
if (typeof(window.btoa) === 'function')
return btoa(input);
var chr1, chr2, chr3, enc1, enc2, enc3, enc4, i = 0, output = '', len = input.length;
do {
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);
} while (i < len);
return output;
},
/**
* Decodes a base64 string.
* @param {String} input The string to decode.
*/
decode: function (input) {
if (typeof(window.atob) === 'function')
return atob(input);
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;
do {
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);
} while (i < len);
return output;
}
};
return obj;
})();