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extensions/Excel转JSON/node_modules/cfb/node_modules/crc-32/LICENSE generated vendored Normal file
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Copyright (C) 2014-present SheetJS
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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# crc32
Standard CRC-32 algorithm implementation in JS (for the browser and nodejs).
Emphasis on correctness, performance, and IE6+ support.
## Installation
With [npm](https://www.npmjs.org/package/crc-32):
```bash
$ npm install crc-32
```
In the browser:
```html
<script src="crc32.js"></script>
```
The browser exposes a variable `CRC32`.
When installed globally, npm installs a script `crc32` that computes the
checksum for a specified file or standard input.
The script will manipulate `module.exports` if available . This is not always
desirable. To prevent the behavior, define `DO_NOT_EXPORT_CRC`.
## Usage
In all cases, the relevant function takes an argument representing data and an
optional second argument representing the starting "seed" (for rolling CRC).
The return value is a signed 32-bit integer.
- `CRC32.buf(byte array or buffer[, seed])` assumes the argument is a sequence
of 8-bit unsigned integers (nodejs `Buffer`, `Uint8Array` or array of bytes).
- `CRC32.bstr(binary string[, seed])` assumes the argument is a binary string
where byte `i` is the low byte of the UCS-2 char: `str.charCodeAt(i) & 0xFF`
- `CRC32.str(string[, seed])` assumes the argument is a standard JS string and
calculates the hash of the UTF-8 encoding.
For example:
```js
// var CRC32 = require('crc-32'); // uncomment this line if in node
CRC32.str("SheetJS") // -1647298270
CRC32.bstr("SheetJS") // -1647298270
CRC32.buf([ 83, 104, 101, 101, 116, 74, 83 ]) // -1647298270
crc32 = CRC32.buf([83, 104]) // -1826163454 "Sh"
crc32 = CRC32.str("eet", crc32) // 1191034598 "Sheet"
CRC32.bstr("JS", crc32) // -1647298270 "SheetJS"
[CRC32.str("\u2603"), CRC32.str("\u0003")] // [ -1743909036, 1259060791 ]
[CRC32.bstr("\u2603"), CRC32.bstr("\u0003")] // [ 1259060791, 1259060791 ]
[CRC32.buf([0x2603]), CRC32.buf([0x0003])] // [ 1259060791, 1259060791 ]
```
## Testing
`make test` will run the nodejs-based test.
To run the in-browser tests, run a local server and go to the `ctest` directory.
`make ctestserv` will start a python `SimpleHTTPServer` server on port 8000.
To update the browser artifacts, run `make ctest`.
To generate the bits file, use the `crc32` function from python `zlib`:
```python
>>> from zlib import crc32
>>> x="foo bar baz٪☃🍣"
>>> crc32(x)
1531648243
>>> crc32(x+x)
-218791105
>>> crc32(x+x+x)
1834240887
```
The included `crc32.njs` script can process files or standard input:
```bash
$ echo "this is a test" > t.txt
$ bin/crc32.njs t.txt
1912935186
```
For comparison, the included `crc32.py` script uses python `zlib`:
```bash
$ bin/crc32.py t.txt
1912935186
```
On OSX the command `cksum` generates unsigned CRC-32 with Algorithm 3:
```bash
$ cksum -o 3 < IE8.Win7.For.Windows.VMware.zip
1891069052 4161613172
$ crc32 --unsigned ~/Downloads/IE8.Win7.For.Windows.VMware.zip
1891069052
```
## Performance
`make perf` will run algorithmic performance tests (which should justify certain
decisions in the code).
The [`adler-32` project](http://git.io/adler32) has more performance notes
## License
Please consult the attached LICENSE file for details. All rights not explicitly
granted by the Apache 2.0 license are reserved by the Original Author.
## Badges
[![Sauce Test Status](https://saucelabs.com/browser-matrix/crc32.svg)](https://saucelabs.com/u/crc32)
[![Build Status](https://travis-ci.org/SheetJS/js-crc32.svg?branch=master)](https://travis-ci.org/SheetJS/js-crc32)
[![Coverage Status](http://img.shields.io/coveralls/SheetJS/js-crc32/master.svg)](https://coveralls.io/r/SheetJS/js-crc32?branch=master)
[![Dependencies Status](https://david-dm.org/sheetjs/js-crc32/status.svg)](https://david-dm.org/sheetjs/js-crc32)
[![NPM Downloads](https://img.shields.io/npm/dt/crc-32.svg)](https://npmjs.org/package/crc-32)
[![ghit.me](https://ghit.me/badge.svg?repo=sheetjs/js-xlsx)](https://ghit.me/repo/sheetjs/js-xlsx)
[![Analytics](https://ga-beacon.appspot.com/UA-36810333-1/SheetJS/js-crc32?pixel)](https://github.com/SheetJS/js-crc32)

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extensions/Excel转JSON/node_modules/cfb/node_modules/crc-32/crc32.js generated vendored Normal file
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/* crc32.js (C) 2014-present SheetJS -- http://sheetjs.com */
/* vim: set ts=2: */
/*exported CRC32 */
var CRC32;
(function (factory) {
/*jshint ignore:start */
/*eslint-disable */
if(typeof DO_NOT_EXPORT_CRC === 'undefined') {
if('object' === typeof exports) {
factory(exports);
} else if ('function' === typeof define && define.amd) {
define(function () {
var module = {};
factory(module);
return module;
});
} else {
factory(CRC32 = {});
}
} else {
factory(CRC32 = {});
}
/*eslint-enable */
/*jshint ignore:end */
}(function(CRC32) {
CRC32.version = '1.2.0';
/* see perf/crc32table.js */
/*global Int32Array */
function signed_crc_table() {
var c = 0, table = new Array(256);
for(var n =0; n != 256; ++n){
c = n;
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
c = ((c&1) ? (-306674912 ^ (c >>> 1)) : (c >>> 1));
table[n] = c;
}
return typeof Int32Array !== 'undefined' ? new Int32Array(table) : table;
}
var T = signed_crc_table();
function crc32_bstr(bstr, seed) {
var C = seed ^ -1, L = bstr.length - 1;
for(var i = 0; i < L;) {
C = (C>>>8) ^ T[(C^bstr.charCodeAt(i++))&0xFF];
C = (C>>>8) ^ T[(C^bstr.charCodeAt(i++))&0xFF];
}
if(i === L) C = (C>>>8) ^ T[(C ^ bstr.charCodeAt(i))&0xFF];
return C ^ -1;
}
function crc32_buf(buf, seed) {
if(buf.length > 10000) return crc32_buf_8(buf, seed);
var C = seed ^ -1, L = buf.length - 3;
for(var i = 0; i < L;) {
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
}
while(i < L+3) C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
return C ^ -1;
}
function crc32_buf_8(buf, seed) {
var C = seed ^ -1, L = buf.length - 7;
for(var i = 0; i < L;) {
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
}
while(i < L+7) C = (C>>>8) ^ T[(C^buf[i++])&0xFF];
return C ^ -1;
}
function crc32_str(str, seed) {
var C = seed ^ -1;
for(var i = 0, L=str.length, c, d; i < L;) {
c = str.charCodeAt(i++);
if(c < 0x80) {
C = (C>>>8) ^ T[(C ^ c)&0xFF];
} else if(c < 0x800) {
C = (C>>>8) ^ T[(C ^ (192|((c>>6)&31)))&0xFF];
C = (C>>>8) ^ T[(C ^ (128|(c&63)))&0xFF];
} else if(c >= 0xD800 && c < 0xE000) {
c = (c&1023)+64; d = str.charCodeAt(i++)&1023;
C = (C>>>8) ^ T[(C ^ (240|((c>>8)&7)))&0xFF];
C = (C>>>8) ^ T[(C ^ (128|((c>>2)&63)))&0xFF];
C = (C>>>8) ^ T[(C ^ (128|((d>>6)&15)|((c&3)<<4)))&0xFF];
C = (C>>>8) ^ T[(C ^ (128|(d&63)))&0xFF];
} else {
C = (C>>>8) ^ T[(C ^ (224|((c>>12)&15)))&0xFF];
C = (C>>>8) ^ T[(C ^ (128|((c>>6)&63)))&0xFF];
C = (C>>>8) ^ T[(C ^ (128|(c&63)))&0xFF];
}
}
return C ^ -1;
}
CRC32.table = T;
// $FlowIgnore
CRC32.bstr = crc32_bstr;
// $FlowIgnore
CRC32.buf = crc32_buf;
// $FlowIgnore
CRC32.str = crc32_str;
}));

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{
"_args": [
[
"crc-32@1.2.0",
"/Users/wuyu/Desktop/61/Git/h5game_ailesson_v2.4/packages/excel_to_json"
]
],
"_from": "crc-32@1.2.0",
"_id": "crc-32@1.2.0",
"_inBundle": false,
"_integrity": "sha1-yy224puIUI4y2d0OwWk+e0Ghggg=",
"_location": "/cfb/crc-32",
"_phantomChildren": {},
"_requested": {
"type": "version",
"registry": true,
"raw": "crc-32@1.2.0",
"name": "crc-32",
"escapedName": "crc-32",
"rawSpec": "1.2.0",
"saveSpec": null,
"fetchSpec": "1.2.0"
},
"_requiredBy": [
"/cfb"
],
"_resolved": "https://registry.npm.taobao.org/crc-32/download/crc-32-1.2.0.tgz",
"_spec": "1.2.0",
"_where": "/Users/wuyu/Desktop/61/Git/h5game_ailesson_v2.4/packages/excel_to_json",
"author": {
"name": "sheetjs"
},
"bin": {
"crc32": "./bin/crc32.njs"
},
"bugs": {
"url": "https://github.com/SheetJS/js-crc32/issues"
},
"config": {
"blanket": {
"pattern": "crc32.js"
}
},
"dependencies": {
"exit-on-epipe": "~1.0.1",
"printj": "~1.1.0"
},
"description": "Pure-JS CRC-32",
"devDependencies": {
"@sheetjs/uglify-js": "~2.7.3",
"@types/node": "^8.0.7",
"blanket": "~1.2.3",
"codepage": "~1.10.0",
"dtslint": "^0.1.2",
"mocha": "~2.5.3",
"typescript": "2.2.0"
},
"engines": {
"node": ">=0.8"
},
"files": [
"crc32.js",
"bin/crc32.njs",
"LICENSE",
"README.md",
"types/index.d.ts",
"types/*.json"
],
"homepage": "http://sheetjs.com/opensource",
"keywords": [
"crc",
"crc32",
"checksum"
],
"license": "Apache-2.0",
"main": "./crc32",
"name": "crc-32",
"repository": {
"type": "git",
"url": "git://github.com/SheetJS/js-crc32.git"
},
"scripts": {
"build": "make",
"dtslint": "dtslint types",
"lint": "make fullint",
"test": "make test"
},
"types": "types",
"version": "1.2.0"
}

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extensions/Excel转JSON/node_modules/cfb/node_modules/crc-32/types/index.d.ts generated vendored Normal file
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/* crc32.js (C) 2014-present SheetJS -- http://sheetjs.com */
// TypeScript Version: 2.2
/** Version string */
export const version: string;
/** Process a node buffer or byte array */
export function buf(data: number[] | Uint8Array, seed?: number): number;
/** Process a binary string */
export function bstr(data: string, seed?: number): number;
/** Process a JS string based on the UTF8 encoding */
export function str(data: string, seed?: number): number;

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{
"compilerOptions": {
"module": "commonjs",
"lib": [ "es5" ],
"noImplicitAny": true,
"noImplicitThis": true,
"strictNullChecks": false,
"baseUrl": ".",
"paths": { "crc-32": ["."] },
"types": [],
"noEmit": true,
"forceConsistentCasingInFileNames": true
}
}

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{
"extends": "dtslint/dtslint.json",
"rules": {
"whitespace": false,
"no-sparse-arrays": false,
"only-arrow-functions": false,
"no-consecutive-blank-lines": false,
"prefer-conditional-expression": false,
"one-variable-per-declaration": false
}
}