| /* |
| * base64.js |
| * |
| * Licensed under the BSD 3-Clause License. |
| * http://opensource.org/licenses/BSD-3-Clause |
| * |
| * References: |
| * http://en.wikipedia.org/wiki/Base64 |
| */ |
| ;(function (global, factory) { |
| typeof exports === 'object' && typeof module !== 'undefined' |
| ? module.exports = factory(global) |
| : typeof define === 'function' && define.amd |
| ? define(factory) : factory(global) |
| }(( |
| typeof self !== 'undefined' ? self |
| : typeof window !== 'undefined' ? window |
| : typeof global !== 'undefined' ? global |
| : this |
| ), function(global) { |
| 'use strict'; |
| // existing version for noConflict() |
| global = global || {}; |
| var _Base64 = global.Base64; |
| var version = "2.5.1"; |
| // if node.js and NOT React Native, we use Buffer |
| var buffer; |
| if (typeof module !== 'undefined' && module.exports) { |
| try { |
| buffer = eval("require('buffer').Buffer"); |
| } catch (err) { |
| buffer = undefined; |
| } |
| } |
| // 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 ? |
| buffer.from && Uint8Array && buffer.from !== Uint8Array.from |
| ? function (u) { |
| return (u.constructor === buffer.constructor ? u : buffer.from(u)) |
| .toString('base64') |
| } |
| : function (u) { |
| return (u.constructor === buffer.constructor ? u : new buffer(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{1,4}/g, cb_decode); |
| }; |
| var atob = function(a) { |
| return _atob(String(a).replace(/[^A-Za-z0-9\+\/]/g, '')); |
| }; |
| var _decode = buffer ? |
| buffer.from && Uint8Array && buffer.from !== Uint8Array.from |
| ? function(a) { |
| return (a.constructor === buffer.constructor |
| ? a : buffer.from(a, 'base64')).toString(); |
| } |
| : function(a) { |
| return (a.constructor === buffer.constructor |
| ? a : new buffer(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, |
| __buffer__: buffer |
| }; |
| // 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) |
| })); |
| }; |
| } |
| // |
| // export Base64 to the namespace |
| // |
| if (global['Meteor']) { // Meteor.js |
| Base64 = global.Base64; |
| } |
| // module.exports and AMD are mutually exclusive. |
| // module.exports has precedence. |
| if (typeof module !== 'undefined' && module.exports) { |
| module.exports.Base64 = global.Base64; |
| } |
| else if (typeof define === 'function' && define.amd) { |
| // AMD. Register as an anonymous module. |
| define([], function(){ return global.Base64 }); |
| } |
| // that's it! |
| return {Base64: global.Base64} |
| })); |