https://fujian.gov.cn/images/base64.js

1
2
3//
4// THIS FILE IS AUTOMATICALLY GENERATED! DO NOT EDIT BY HAND!
5//
6;(function(global, factory) {
7    typeof exports === 'object' && typeof module !== 'undefined'
8        ? module.exports = factory()
9        : typeof define === 'function' && define.amd
10        ? define(factory) :
11        // cf. https://github.com/dankogai/js-base64/issues/119
12        (function() {
13            // existing version for noConflict()
14            const _Base64 = global.Base64;
15            const gBase64 = factory();
16            gBase64.noConflict = () => {
17                global.Base64 = _Base64;
18                return gBase64;
19            };
20            if (global.Meteor) { // Meteor.js
21                Base64 = gBase64;
22            }
23            global.Base64 = gBase64;
24        })();
25}((typeof self !== 'undefined' ? self
26        : typeof window !== 'undefined' ? window
27        : typeof global !== 'undefined' ? global
28        : this
29), function() {
30    'use strict';
31
32/**
33 *  base64.ts
34 *
35 *  Licensed under the BSD 3-Clause License.
36 *    http://opensource.org/licenses/BSD-3-Clause
37 *
38 *  References:
39 *    http://en.wikipedia.org/wiki/Base64
40 *
41 * @author Dan Kogai (https://github.com/dankogai)
42 */
43const version = '3.5.2';
44/**
45 * @deprecated use lowercase `version`.
46 */
47const VERSION = version;
48const _hasatob = typeof atob === 'function';
49const _hasbtoa = typeof btoa === 'function';
50const _hasBuffer = typeof Buffer === 'function';
51const _TD = typeof TextDecoder === 'function' ? new TextDecoder() : undefined;
52const _TE = typeof TextEncoder === 'function' ? new TextEncoder() : undefined;
53const b64ch = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
54const b64chs = [...b64ch];
55const b64tab = ((a) => {
56    let tab = {};
57    a.forEach((c, i) => tab[c] = i);
58    return tab;
59})(b64chs);
60const b64re = /^(?:[A-Za-z\d+\/]{4})*?(?:[A-Za-z\d+\/]{2}(?:==)?|[A-Za-z\d+\/]{3}=?)?$/;
61const _fromCC = String.fromCharCode.bind(String);
62const _U8Afrom = typeof Uint8Array.from === 'function'
63    ? Uint8Array.from.bind(Uint8Array)
64    : (it, fn = (x) => x) => new Uint8Array(Array.prototype.slice.call(it, 0).map(fn));
65const _mkUriSafe = (src) => src
66    .replace(/[+\/]/g, (m0) => m0 == '+' ? '-' : '_')
67    .replace(/=+$/m, '');
68const _tidyB64 = (s) => s.replace(/[^A-Za-z0-9\+\/]/g, '');
69/**
70 * polyfill version of `btoa`
71 */
72const btoaPolyfill = (bin) => {
73    // console.log('polyfilled');
74    let u32, c0, c1, c2, asc = '';
75    const pad = bin.length % 3;
76    for (let i = 0; i < bin.length;) {
77        if ((c0 = bin.charCodeAt(i++)) > 255 ||
78            (c1 = bin.charCodeAt(i++)) > 255 ||
79            (c2 = bin.charCodeAt(i++)) > 255)
80            throw new TypeError('invalid character found');
81        u32 = (c0 << 16) | (c1 << 8) | c2;
82        asc += b64chs[u32 >> 18 & 63]
83            + b64chs[u32 >> 12 & 63]
84            + b64chs[u32 >> 6 & 63]
85            + b64chs[u32 & 63];
86    }
87    return pad ? asc.slice(0, pad - 3) + "===".substring(pad) : asc;
88};
89/**
90 * does what `window.btoa` of web browsers do.
91 * @param {String} bin binary string
92 * @returns {string} Base64-encoded string
93 */
94const _btoa = _hasbtoa ? (bin) => btoa(bin)
95    : _hasBuffer ? (bin) => Buffer.from(bin, 'binary').toString('base64')
96        : btoaPolyfill;
97const _fromUint8Array = _hasBuffer
98    ? (u8a) => Buffer.from(u8a).toString('base64')
99    : (u8a) => {
100        // cf. https://stackoverflow.com/questions/12710001/how-to-convert-uint8-array-to-base64-encoded-string/12713326#12713326
101        const maxargs = 0x1000;
102        let strs = [];
103        for (let i = 0, l = u8a.length; i < l; i += maxargs) {
104            strs.push(_fromCC.apply(null, u8a.subarray(i, i + maxargs)));
105        }
106        return _btoa(strs.join(''));
107    };
108/**
109 * converts a Uint8Array to a Base64 string.
110 * @param {boolean} [urlsafe] URL-and-filename-safe a la RFC4648 §5
111 * @returns {string} Base64 string
112 */
113const fromUint8Array = (u8a, urlsafe = false) => urlsafe ? _mkUriSafe(_fromUint8Array(u8a)) : _fromUint8Array(u8a);
114// This trick is found broken https://github.com/dankogai/js-base64/issues/130
115// const utob = (src: string) => unescape(encodeURIComponent(src));
116// reverting good old fationed regexp
117const cb_utob = (c) => {
118    if (c.length < 2) {

119        var cc = c.charCodeAt(0);
120        return cc < 0x80 ? c
121            : cc < 0x800 ? (_fromCC(0xc0 | (cc >>> 6))
122                + _fromCC(0x80 | (cc & 0x3f)))
123                : (_fromCC(0xe0 | ((cc >>> 12) & 0x0f))
124                    + _fromCC(0x80 | ((cc >>> 6) & 0x3f))
125                    + _fromCC(0x80 | (cc & 0x3f)));
126    }
127    else {
128        var cc = 0x10000
129            + (c.charCodeAt(0) - 0xD800) * 0x400
130            + (c.charCodeAt(1) - 0xDC00);
131        return (_fromCC(0xf0 | ((cc >>> 18) & 0x07))
132            + _fromCC(0x80 | ((cc >>> 12) & 0x3f))
133            + _fromCC(0x80 | ((cc >>> 6) & 0x3f))
134            + _fromCC(0x80 | (cc & 0x3f)));
135    }
136};
137const re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g;
138/**
139 * @deprecated should have been internal use only.
140 * @param {string} src UTF-8 string
141 * @returns {string} UTF-16 string
142 */
143const utob = (u) => u.replace(re_utob, cb_utob);
144//
145const _encode = _hasBuffer
146    ? (s) => Buffer.from(s, 'utf8').toString('base64')
147    : _TE
148        ? (s) => _fromUint8Array(_TE.encode(s))
149        : (s) => _btoa(utob(s));
150/**
151 * converts a UTF-8-encoded string to a Base64 string.
152 * @param {boolean} [urlsafe] if `true` make the result URL-safe
153 * @returns {string} Base64 string
154 */
155const encode = (src, urlsafe = false) => urlsafe
156    ? _mkUriSafe(_encode(src))
157    : _encode(src);
158/**
159 * converts a UTF-8-encoded string to URL-safe Base64 RFC4648 §5.
160 * @returns {string} Base64 string
161 */
162const encodeURI = (src) => encode(src, true);
163// This trick is found broken https://github.com/dankogai/js-base64/issues/130
164// const btou = (src: string) => decodeURIComponent(escape(src));
165// reverting good old fationed regexp
166const re_btou = /[\xC0-\xDF][\x80-\xBF]|[\xE0-\xEF][\x80-\xBF]{2}|[\xF0-\xF7][\x80-\xBF]{3}/g;
167const cb_btou = (cccc) => {
168    switch (cccc.length) {
169        case 4:
170            var cp = ((0x07 & cccc.charCodeAt(0)) << 18)
171                | ((0x3f & cccc.charCodeAt(1)) << 12)
172                | ((0x3f & cccc.charCodeAt(2)) << 6)
173                | (0x3f & cccc.charCodeAt(3)), offset = cp - 0x10000;
174            return (_fromCC((offset >>> 10) + 0xD800)
175                + _fromCC((offset & 0x3FF) + 0xDC00));
176        case 3:
177            return _fromCC(((0x0f & cccc.charCodeAt(0)) << 12)
178                | ((0x3f & cccc.charCodeAt(1)) << 6)
179                | (0x3f & cccc.charCodeAt(2)));
180        default:
181            return _fromCC(((0x1f & cccc.charCodeAt(0)) << 6)
182                | (0x3f & cccc.charCodeAt(1)));
183    }
184};
185/**
186 * @deprecated should have been internal use only.
187 * @param {string} src UTF-16 string
188 * @returns {string} UTF-8 string
189 */
190const btou = (b) => b.replace(re_btou, cb_btou);
191/**
192 * polyfill version of `atob`
193 */
194const atobPolyfill = (asc) => {
195    // console.log('polyfilled');
196    asc = asc.replace(/\s+/g, '');
197    if (!b64re.test(asc))
198        throw new TypeError('malformed base64.');
199    asc += '=='.slice(2 - (asc.length & 3));
200    let u24, bin = '', r1, r2;
201    for (let i = 0; i < asc.length;) {
202        u24 = b64tab[asc.charAt(i++)] << 18
203            | b64tab[asc.charAt(i++)] << 12
204            | (r1 = b64tab[asc.charAt(i++)]) << 6
205            | (r2 = b64tab[asc.charAt(i++)]);
206        bin += r1 === 64 ? _fromCC(u24 >> 16 & 255)
207            : r2 === 64 ? _fromCC(u24 >> 16 & 255, u24 >> 8 & 255)
208                : _fromCC(u24 >> 16 & 255, u24 >> 8 & 255, u24 & 255);
209    }
210    return bin;
211};
212/**
213 * does what `window.atob` of web browsers do.
214 * @param {String} asc Base64-encoded string
215 * @returns {string} binary string
216 */
217const _atob = _hasatob ? (asc) => atob(_tidyB64(asc))
218    : _hasBuffer ? (asc) => Buffer.from(asc, 'base64').toString('binary')
219        : atobPolyfill;
220//
221const _toUint8Array = _hasBuffer
222    ? (a) => _U8Afrom(Buffer.from(a, 'base64'))
223    : (a) => _U8Afrom(_atob(a), c => c.charCodeAt(0));
224/**
225 * converts a Base64 string to a Uint8Array.
226 */
227const toUint8Array = (a) => _toUint8Array(_unURI(a));
228//
229const _decode = _hasBuffer
230    ? (a) => Buffer.from(a, 'base64').toString('utf8')
231    : _TD
232        ? (a) => _TD.decode(_toUint8Array(a))
233        : (a) => btou(_atob(a));
234const _unURI = (a) => _tidyB64(a.replace(/[-_]/g, (m0) => m0 == '-' ? '+' : '/'));
235/**
236 * converts a Base64 string to a UTF-8 string.
237 * @param {String} src Base64 string.  Both normal and URL-safe are supported
238 * @returns {string} UTF-8 string
239 */
240const decode = (src) => _decode(_unURI(src));
241//
242const _noEnum = (v) => {
243    return {
244        value: v, enumerable: false, writable: true, configurable: true
245    };
246};
247/**
248 * extend String.prototype with relevant methods
249 */
250const extendString = function () {
251    const _add = (name, body) => Object.defineProperty(String.prototype, name, _noEnum(body));
252    _add('fromBase64', function () { return decode(this); });
253    _add('toBase64', function (urlsafe) { return encode(this, urlsafe); });
254    _add('toBase64URI', function () { return encode(this, true); });
255    _add('toBase64URL', function () { return encode(this, true); });
256    _add('toUint8Array', function () { return toUint8Array(this); });
257};
258/**
259 * extend Uint8Array.prototype with relevant methods
260 */
261const extendUint8Array = function () {
262    const _add = (name, body) => Object.defineProperty(Uint8Array.prototype, name, _noEnum(body));
263    _add('toBase64', function (urlsafe) { return fromUint8Array(this, urlsafe); });
264    _add('toBase64URI', function () { return fromUint8Array(this, true); });
265    _add('toBase64URL', function () { return fromUint8Array(this, true); });
266};
267/**
268 * extend Builtin prototypes with relevant methods
269 */
270const extendBuiltins = () => {
271    extendString();
272    extendUint8Array();
273};
274const gBase64 = {
275    version: version,
276    VERSION: VERSION,
277    atob: _atob,
278    atobPolyfill: atobPolyfill,
279    btoa: _btoa,
280    btoaPolyfill: btoaPolyfill,
281    fromBase64: decode,
282    toBase64: encode,
283    encode: encode,
284    encodeURI: encodeURI,
285    encodeURL: encodeURI,
286    utob: utob,
287    btou: btou,
288    decode: decode,
289    fromUint8Array: fromUint8Array,
290    toUint8Array: toUint8Array,
291    extendString: extendString,
292    extendUint8Array: extendUint8Array,
293    extendBuiltins: extendBuiltins,
294};
295
296    //
297    // export Base64 to the namespace
298    //
299    // ES5 is yet to have Object.assign() that may make transpilers unhappy.
300    // gBase64.Base64 = Object.assign({}, gBase64);
301    gBase64.Base64 = {};

302    Object.keys(gBase64).forEach(k => gBase64.Base64[k] = gBase64[k]);
303    return gBase64;
304}));
305
306