text: /*
   * $Id: base64.js,v 2.15 2014/04/05 12:58:57 dankogai Exp dankogai $
   *
   *  Licensed under the MIT license.
   *    http://opensource.org/licenses/mit-license
   *
   *  References:
   *    http://en.wikipedia.org/wiki/Base64
   */
  
  (function(global) {
      'use strict';
      // existing version for noConflict()
      var _Base64 = global.Base64;
      var version = "2.1.9";
      // if node.js, we use Buffer
      var buffer;
      if (typeof module !== 'undefined' && module.exports) {
          try {
              buffer = require('buffer').Buffer;
          } catch (err) {}
      }
      // constants
      var b64chars
          = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
      var b64tab = function(bin) {
          var t = {};
          for (var i = 0, l = bin.length; i < l; i++) t[bin.charAt(i)] = i;
          return t;
      }(b64chars);
      var fromCharCode = String.fromCharCode;
      // encoder stuff
      var cb_utob = function(c) {
          if (c.length < 2) {
              var cc = c.charCodeAt(0);
              return cc < 0x80 ? c
                  : cc < 0x800 ? (fromCharCode(0xc0 | (cc >>> 6))
                                  + fromCharCode(0x80 | (cc & 0x3f)))
                  : (fromCharCode(0xe0 | ((cc >>> 12) & 0x0f))
                     + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                     + fromCharCode(0x80 | ( cc         & 0x3f)));
          } else {
              var cc = 0x10000
                  + (c.charCodeAt(0) - 0xD800) * 0x400
                  + (c.charCodeAt(1) - 0xDC00);
              return (fromCharCode(0xf0 | ((cc >>> 18) & 0x07))
                      + fromCharCode(0x80 | ((cc >>> 12) & 0x3f))
                      + fromCharCode(0x80 | ((cc >>>  6) & 0x3f))
                      + fromCharCode(0x80 | ( cc         & 0x3f)));
          }
      };
      var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
      var utob = function(u) {
          return u.replace(re_utob, cb_utob);
      };
      var cb_encode = function(ccc) {
          var padlen = [0, 2, 1][ccc.length % 3],
          ord = ccc.charCodeAt(0) << 16
              | ((ccc.length > 1 ? ccc.charCodeAt(1) : 0) << 8)
              | ((ccc.length > 2 ? ccc.charCodeAt(2) : 0)),
          chars = [
              b64chars.charAt( ord >>> 18),
              b64chars.charAt((ord >>> 12) & 63),
              padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),
              padlen >= 1 ? '=' : b64chars.charAt(ord & 63)
          ];
          return chars.join('');
      };
      var btoa = global.btoa ? function(b) {
          return global.btoa(b);
      } : function(b) {
          return b.replace(/[\s\S]{1,3}/g, cb_encode);
      };
      var _encode = buffer ? function (u) {
          return (u.constructor === buffer.constructor ? u : Buffer.from(u))
          .toString('base64')
      }
      : function (u) { return btoa(utob(u)) }
      ;
      var encode = function(u, urisafe) {
          return !urisafe
              ? _encode(String(u))
              : _encode(String(u)).replace(/[+\/]/g, function(m0) {
                  return m0 === '+' ? '-' : '_';
              }).replace(/=/g, '');
      };
      var encodeURI = function(u) { return encode(u, true) };
      // decoder stuff
      var re_btou = new RegExp([
          '[\xC0-\xDF][\x80-\xBF]',
          '[\xE0-\xEF][\x80-\xBF]{2}',
          '[\xF0-\xF7][\x80-\xBF]{3}'
      ].join('|'), 'g');
      var cb_btou = function(cccc) {
          switch(cccc.length) {
          case 4:
              var cp = ((0x07 & cccc.charCodeAt(0)) << 18)
                  |    ((0x3f & cccc.charCodeAt(1)) << 12)
                  |    ((0x3f & cccc.charCodeAt(2)) <<  6)
                  |     (0x3f & cccc.charCodeAt(3)),
              offset = cp - 0x10000;
              return (fromCharCode((offset  >>> 10) + 0xD800)
                      + fromCharCode((offset & 0x3FF) + 0xDC00));
          case 3:
              return fromCharCode(
                  ((0x0f & cccc.charCodeAt(0)) << 12)
                      | ((0x3f & cccc.charCodeAt(1)) << 6)
                      |  (0x3f & cccc.charCodeAt(2))
              );
          default:
              return  fromCharCode(
                  ((0x1f & cccc.charCodeAt(0)) << 6)
                      |  (0x3f & cccc.charCodeAt(1))
              );
          }
      };
      var btou = function(b) {
          return b.replace(re_btou, cb_btou);
      };
      var cb_decode = function(cccc) {
          var len = cccc.length,
          padlen = len % 4,
          n = (len > 0 ? b64tab[cccc.charAt(0)] << 18 : 0)
              | (len > 1 ? b64tab[cccc.charAt(1)] << 12 : 0)
              | (len > 2 ? b64tab[cccc.charAt(2)] <<  6 : 0)
              | (len > 3 ? b64tab[cccc.charAt(3)]       : 0),
          chars = [
              fromCharCode( n >>> 16),
              fromCharCode((n >>>  8) & 0xff),
              fromCharCode( n         & 0xff)
          ];
          chars.length -= [0, 0, 2, 1][padlen];
          return chars.join('');
      };
      var atob = global.atob ? function(a) {
          return global.atob(a);
      } : function(a){
          return a.replace(/[\s\S]{1,4}/g, cb_decode);
      };
      var _decode = buffer ? function(a) {
          return (a.constructor === buffer.constructor
                  ? a : Buffer.from(a, 'base64')).toString();
      }
      : function(a) { return btou(atob(a)) };
      var decode = function(a){
          return _decode(
              String(a).replace(/[-_]/g, function(m0) { return m0 === '-' ? '+' : '/' })
                  .replace(/[^A-Za-z0-9\+\/]/g, '')
          );
      };
      var noConflict = function() {
          var Base64 = global.Base64;
          global.Base64 = _Base64;
          return Base64;
      };
      // export Base64
      global.Base64 = {
          VERSION: version,
          atob: atob,
          btoa: btoa,
          fromBase64: decode,
          toBase64: encode,
          utob: utob,
          encode: encode,
          encodeURI: encodeURI,
          btou: btou,
          decode: decode,
          noConflict: noConflict
      };
      // if ES5 is available, make Base64.extendString() available
      if (typeof Object.defineProperty === 'function') {
          var noEnum = function(v){
              return {value:v,enumerable:false,writable:true,configurable:true};
          };
          global.Base64.extendString = function () {
              Object.defineProperty(
                  String.prototype, 'fromBase64', noEnum(function () {
                      return decode(this)
                  }));
              Object.defineProperty(
                  String.prototype, 'toBase64', noEnum(function (urisafe) {
                      return encode(this, urisafe)
                  }));
              Object.defineProperty(
                  String.prototype, 'toBase64URI', noEnum(function () {
                      return encode(this, true)
                  }));
          };
      }
      // that's it!
      if (global['Meteor']) {
         this.Base64 = global.Base64; // for normal export in Meteor.js
      }
  })(this);
  