diff options
Diffstat (limited to 'desktop/node_modules/buffer-crc32')
-rw-r--r-- | desktop/node_modules/buffer-crc32/LICENSE | 19 | ||||
-rw-r--r-- | desktop/node_modules/buffer-crc32/README.md | 47 | ||||
-rw-r--r-- | desktop/node_modules/buffer-crc32/index.js | 111 | ||||
-rw-r--r-- | desktop/node_modules/buffer-crc32/package.json | 39 |
4 files changed, 216 insertions, 0 deletions
diff --git a/desktop/node_modules/buffer-crc32/LICENSE b/desktop/node_modules/buffer-crc32/LICENSE new file mode 100644 index 0000000..4cef10e --- /dev/null +++ b/desktop/node_modules/buffer-crc32/LICENSE @@ -0,0 +1,19 @@ +The MIT License + +Copyright (c) 2013 Brian J. Brennan + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to use, +copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the +Software, and to permit persons to whom the Software is furnished to do so, +subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, +INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR +PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE +FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/desktop/node_modules/buffer-crc32/README.md b/desktop/node_modules/buffer-crc32/README.md new file mode 100644 index 0000000..0d9d8b8 --- /dev/null +++ b/desktop/node_modules/buffer-crc32/README.md @@ -0,0 +1,47 @@ +# buffer-crc32 + +[![Build Status](https://secure.travis-ci.org/brianloveswords/buffer-crc32.png?branch=master)](http://travis-ci.org/brianloveswords/buffer-crc32) + +crc32 that works with binary data and fancy character sets, outputs +buffer, signed or unsigned data and has tests. + +Derived from the sample CRC implementation in the PNG specification: http://www.w3.org/TR/PNG/#D-CRCAppendix + +# install +``` +npm install buffer-crc32 +``` + +# example +```js +var crc32 = require('buffer-crc32'); +// works with buffers +var buf = Buffer([0x00, 0x73, 0x75, 0x70, 0x20, 0x62, 0x72, 0x6f, 0x00]) +crc32(buf) // -> <Buffer 94 5a ab 4a> + +// has convenience methods for getting signed or unsigned ints +crc32.signed(buf) // -> -1805997238 +crc32.unsigned(buf) // -> 2488970058 + +// will cast to buffer if given a string, so you can +// directly use foreign characters safely +crc32('自動販売機') // -> <Buffer cb 03 1a c5> + +// and works in append mode too +var partialCrc = crc32('hey'); +var partialCrc = crc32(' ', partialCrc); +var partialCrc = crc32('sup', partialCrc); +var partialCrc = crc32(' ', partialCrc); +var finalCrc = crc32('bros', partialCrc); // -> <Buffer 47 fa 55 70> +``` + +# tests +This was tested against the output of zlib's crc32 method. You can run +the tests with`npm test` (requires tap) + +# see also +https://github.com/alexgorbatchev/node-crc, `crc.buffer.crc32` also +supports buffer inputs and return unsigned ints (thanks @tjholowaychuk). + +# license +MIT/X11 diff --git a/desktop/node_modules/buffer-crc32/index.js b/desktop/node_modules/buffer-crc32/index.js new file mode 100644 index 0000000..6727dd3 --- /dev/null +++ b/desktop/node_modules/buffer-crc32/index.js @@ -0,0 +1,111 @@ +var Buffer = require('buffer').Buffer; + +var CRC_TABLE = [ + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, + 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, + 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, + 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, + 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, + 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, + 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, + 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, + 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, + 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, + 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, + 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, + 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, + 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, + 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, + 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, + 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, + 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, + 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, + 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, + 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, + 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, + 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, + 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, + 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, + 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, + 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, + 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, + 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, + 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, + 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, + 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, + 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, + 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, + 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, + 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, + 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, + 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, + 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, + 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, + 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, + 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, + 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, + 0x2d02ef8d +]; + +if (typeof Int32Array !== 'undefined') { + CRC_TABLE = new Int32Array(CRC_TABLE); +} + +function ensureBuffer(input) { + if (Buffer.isBuffer(input)) { + return input; + } + + var hasNewBufferAPI = + typeof Buffer.alloc === "function" && + typeof Buffer.from === "function"; + + if (typeof input === "number") { + return hasNewBufferAPI ? Buffer.alloc(input) : new Buffer(input); + } + else if (typeof input === "string") { + return hasNewBufferAPI ? Buffer.from(input) : new Buffer(input); + } + else { + throw new Error("input must be buffer, number, or string, received " + + typeof input); + } +} + +function bufferizeInt(num) { + var tmp = ensureBuffer(4); + tmp.writeInt32BE(num, 0); + return tmp; +} + +function _crc32(buf, previous) { + buf = ensureBuffer(buf); + if (Buffer.isBuffer(previous)) { + previous = previous.readUInt32BE(0); + } + var crc = ~~previous ^ -1; + for (var n = 0; n < buf.length; n++) { + crc = CRC_TABLE[(crc ^ buf[n]) & 0xff] ^ (crc >>> 8); + } + return (crc ^ -1); +} + +function crc32() { + return bufferizeInt(_crc32.apply(null, arguments)); +} +crc32.signed = function () { + return _crc32.apply(null, arguments); +}; +crc32.unsigned = function () { + return _crc32.apply(null, arguments) >>> 0; +}; + +module.exports = crc32; diff --git a/desktop/node_modules/buffer-crc32/package.json b/desktop/node_modules/buffer-crc32/package.json new file mode 100644 index 0000000..e896bec --- /dev/null +++ b/desktop/node_modules/buffer-crc32/package.json @@ -0,0 +1,39 @@ +{ + "author": "Brian J. Brennan <brianloveswords@gmail.com>", + "name": "buffer-crc32", + "description": "A pure javascript CRC32 algorithm that plays nice with binary data", + "version": "0.2.13", + "licenses": [ + { + "type": "MIT", + "url": "https://github.com/brianloveswords/buffer-crc32/raw/master/LICENSE" + } + ], + "contributors": [ + { + "name": "Vladimir Kuznetsov", + "github": "mistakster" + } + ], + "homepage": "https://github.com/brianloveswords/buffer-crc32", + "repository": { + "type": "git", + "url": "git://github.com/brianloveswords/buffer-crc32.git" + }, + "main": "index.js", + "scripts": { + "test": "./node_modules/.bin/tap tests/*.test.js" + }, + "dependencies": {}, + "devDependencies": { + "tap": "~0.2.5" + }, + "optionalDependencies": {}, + "engines": { + "node": "*" + }, + "license": "MIT", + "files": [ + "index.js" + ] +} |