mirror of
https://github.com/transatoshi-mw/grin-web-wallet.git
synced 2025-10-06 15:52:47 +00:00
6374 lines
182 KiB
JavaScript
Executable File
6374 lines
182 KiB
JavaScript
Executable File
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.chacha = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
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(function (Buffer){(function (){
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var inherits = require('inherits');
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var CipherBase = require('./cipherbase');
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var Chacha20 = require('./chacha20');
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var CipherBase = require('./cipherbase');
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var Poly1305 = require('./poly1305');
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inherits(Cipher, CipherBase);
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module.exports = Cipher;
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function Cipher(key, iv, decrypt){
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if (!(this instanceof Cipher)) {
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return new Cipher(key, iv, decrypt);
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}
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CipherBase.call(this);
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this.alen = 0;
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this.clen = 0;
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this.chacha = new Chacha20(key, iv);
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this.poly = new Poly1305(this.chacha.getBytes(64));
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this.tag = null;
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this._decrypt = decrypt;
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this._hasData = false;
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}
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Cipher.prototype.setAAD = function (aad) {
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if (this._hasData) {
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throw new Error('Attempting to set AAD in unsupported state');
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}
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this.alen = aad.length;
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this.poly.update(aad);
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var padding = new Buffer(padAmount(this.alen));
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if (padding.length) {
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padding.fill(0);
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this.poly.update(padding);
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}
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};
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Cipher.prototype._update = function (chunk) {
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if (!this._hasData) {
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this._hasData = true;
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}
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var len = chunk.length;
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if (!len) {
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return next();
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}
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this.clen += len;
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var pad = this.chacha.getBytes(len);
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var i = -1;
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while (++i < len) {
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pad[i] ^= chunk[i];
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}
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if (this._decrypt) {
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this.poly.update(chunk);
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} else {
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this.poly.update(pad);
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}
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return pad;
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};
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Cipher.prototype._final = function () {
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if (this._decrypt && !this.tag) {
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throw new Error('Unsupported state or unable to authenticate data');
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}
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var padding = new Buffer(padAmount(this.clen));
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if (padding.length) {
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padding.fill(0);
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this.poly.update(padding);
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}
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var lens = new Buffer(16);
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lens.fill(0);
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lens.writeUInt32LE(this.alen, 0);
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lens.writeUInt32LE(this.clen, 8);
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var tag = this.poly.update(lens).finish();
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if (this._decrypt) {
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if (xorTest(tag, this.tag)) {
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throw new Error('Unsupported state or unable to authenticate data');
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}
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} else {
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this.tag = tag;
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}
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};
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Cipher.prototype.getAuthTag = function () {
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if(this._decrypt || this.tag === null) {
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throw new Error('Attempting to get auth tag in unsupported state');
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}
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return this.tag;
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};
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Cipher.prototype.setAuthTag = function setAuthTag (tag) {
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if (this._decrypt) {
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this.tag = tag;
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} else {
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throw new Error('Attempting to set auth tag in unsupported state');
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}
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};
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function padAmount(len) {
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var rem = len % 16;
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if (!rem) {
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return 0;
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}
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return 16 - rem;
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}
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function xorTest(a, b) {
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var out = 0;
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if (a.length !== b.length) {
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out++;
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}
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var len = Math.min(a.length, b.length);
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var i = -1;
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while (++i < len) {
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out += (a[i] ^ b[i]);
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}
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return out;
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}
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}).call(this)}).call(this,require("buffer").Buffer)
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},{"./chacha20":2,"./cipherbase":4,"./poly1305":7,"buffer":27,"inherits":10}],2:[function(require,module,exports){
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(function (Buffer){(function (){
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function ROTATE(v, c) {
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return (v << c) | (v >>> (32 - c));
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}
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var constants = new Buffer('expand 32-byte k');
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module.exports = Chacha20;
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function Chacha20(key, nonce) {
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this.input = new Uint32Array(16);
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// https://tools.ietf.org/html/draft-irtf-cfrg-chacha20-poly1305-01#section-2.3
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this.input[0] = constants.readUInt32LE(0);
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this.input[1] = constants.readUInt32LE(4);
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this.input[2] = constants.readUInt32LE(8);
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this.input[3] = constants.readUInt32LE(12);
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this.input[4] = key.readUInt32LE(0);
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this.input[5] = key.readUInt32LE(4);
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this.input[6] = key.readUInt32LE(8);
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this.input[7] = key.readUInt32LE(12);
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this.input[8] = key.readUInt32LE(16);
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this.input[9] = key.readUInt32LE(20);
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this.input[10] = key.readUInt32LE(24);
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this.input[11] = key.readUInt32LE(28);
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this.input[12] = 0;
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this.input[13] = nonce.readUInt32LE(0);
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this.input[14] = nonce.readUInt32LE(4);
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this.input[15] = nonce.readUInt32LE(8);
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this.cachePos = 64;
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this.buffer = new Uint32Array(16);
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this.output = new Buffer(64);
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}
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Chacha20.prototype.quarterRound = function(a, b, c, d) {
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var x = this.buffer;
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x[a] += x[b]; x[d] = ROTATE(x[d] ^ x[a], 16);
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x[c] += x[d]; x[b] = ROTATE(x[b] ^ x[c], 12);
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x[a] += x[b]; x[d] = ROTATE(x[d] ^ x[a], 8);
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x[c] += x[d]; x[b] = ROTATE(x[b] ^ x[c], 7);
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};
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Chacha20.prototype.makeBlock = function (output, start) {
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var i = -1;
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// copy input into working buffer
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while (++i < 16) {
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this.buffer[i] = this.input[i];
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}
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i = -1;
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while (++i < 10) {
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// straight round
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this.quarterRound(0, 4, 8,12);
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this.quarterRound(1, 5, 9,13);
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this.quarterRound(2, 6,10,14);
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this.quarterRound(3, 7,11,15);
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//diaganle round
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this.quarterRound(0, 5,10,15);
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this.quarterRound(1, 6,11,12);
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this.quarterRound(2, 7, 8,13);
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this.quarterRound(3, 4, 9,14);
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}
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i = -1;
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// copy working buffer into output
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while (++i < 16) {
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this.buffer[i] += this.input[i];
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output.writeUInt32LE(this.buffer[i], start);
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start += 4;
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}
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this.input[12]++;
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if (!this.input[12]) {
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throw new Error('counter is exausted');
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}
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};
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Chacha20.prototype.getBytes = function(len) {
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var dpos = 0;
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var dst = new Buffer(len);
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var cacheLen = 64 - this.cachePos;
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if (cacheLen) {
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if (cacheLen >= len) {
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this.output.copy(dst, 0, this.cachePos, 64);
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this.cachePos += len;
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return dst;
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} else {
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this.output.copy(dst, 0, this.cachePos, 64);
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len -= cacheLen;
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dpos += cacheLen;
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this.cachePos = 64;
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}
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}
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while (len > 0 ) {
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if (len <= 64) {
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this.makeBlock(this.output, 0);
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this.output.copy(dst, dpos, 0, len);
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if (len < 64) {
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this.cachePos = len;
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}
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return dst;
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} else {
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this.makeBlock(dst, dpos);
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}
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len -= 64;
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dpos += 64;
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}
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throw new Error('something bad happended');
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};
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}).call(this)}).call(this,require("buffer").Buffer)
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},{"buffer":27}],3:[function(require,module,exports){
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var Chacha20 = require('./chacha20');
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var inherits = require('inherits');
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var CipherBase = require('./cipherbase');
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inherits(ChaChaStream, CipherBase);
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module.exports = ChaChaStream;
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function ChaChaStream (key, iv) {
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if (!(this instanceof ChaChaStream)) {
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return new ChaChaStream(key, iv);
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}
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CipherBase.call(this);
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this.chacha = new Chacha20(key, iv);
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}
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ChaChaStream.prototype._update = function (chunk) {
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var len = chunk.length;
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if (!len) {
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return;
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}
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var pad = this.chacha.getBytes(len);
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var i = -1;
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while (++i < len) {
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pad[i] ^= chunk[i];
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}
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return pad;
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};
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},{"./chacha20":2,"./cipherbase":4,"inherits":10}],4:[function(require,module,exports){
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(function (Buffer){(function (){
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var Transform = require('readable-stream').Transform;
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var inherits = require('inherits');
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module.exports = CipherBase;
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inherits(CipherBase, Transform);
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function CipherBase(digest) {
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if (digest) {
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this.digest = finalFunc;
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} else {
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this.final = finalFunc;
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}
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}
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[
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'_readableState',
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'_writableState',
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'_transformState'
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].forEach(function(prop) {
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Object.defineProperty(CipherBase.prototype, prop, {
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get: function() {
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Transform.call(this);
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return this[prop];
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},
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set: function(val) {
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Object.defineProperty(this, prop, {
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value: val,
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enumerable: true,
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configurable: true,
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writable: true
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});
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},
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configurable: true,
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enumerable: true
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});
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});
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CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
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if (typeof data === 'string') {
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data = new Buffer(data, inputEnc);
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}
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var outData = this._update(data) || new Buffer('');
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if (outputEnc) {
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outData = outData.toString(outputEnc);
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}
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if (this.digest) {
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return this;
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}
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return outData;
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};
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CipherBase.prototype._transform = function (data, _, next) {
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this.push(this._update(data));
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next();
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};
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CipherBase.prototype._flush = function (next) {
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try {
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this.push(this._final());
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} catch(e) {
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return next(e);
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}
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next();
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};
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function finalFunc (outputEnc) {
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var outData = this._final() || new Buffer('');
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if (outputEnc) {
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outData = outData.toString(outputEnc);
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}
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return outData;
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};
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CipherBase.prototype._final = function () {};
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}).call(this)}).call(this,require("buffer").Buffer)
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},{"buffer":27,"inherits":10,"readable-stream":21}],5:[function(require,module,exports){
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var Cipher = require('./aead');
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exports.aead = Cipher;
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exports.createCipher = createCipher;
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function createCipher(key, iv) {
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return new Cipher(key, iv);
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}
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exports.createDecipher = createDecipher;
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function createDecipher(key, iv) {
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return new Cipher(key, iv, true);
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}
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exports.createHmac = require('./polystream');
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exports.chacha20 = exports.ChaCha20 = require('./chachastream');
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exports.aeadLegacy = exports.AeadLegacy = require('./legacy-aead');
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},{"./aead":1,"./chachastream":3,"./legacy-aead":6,"./polystream":8}],6:[function(require,module,exports){
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(function (Buffer){(function (){
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var inherits = require('inherits');
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var CipherBase = require('./cipherbase');
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var Chacha20 = require('./chacha20');
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var Poly1305 = require('./poly1305');
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inherits(Cipher, CipherBase);
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module.exports = Cipher;
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var zeros = new Buffer (4);
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zeros.fill(0);
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function Cipher(key, iv, decrypt){
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if (!(this instanceof Cipher)) {
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return new Cipher(key, iv, decrypt);
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}
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CipherBase.call(this);
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this.alen = 0;
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this.clen = 0;
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this.chacha = new Chacha20(key, Buffer.concat([zeros,iv]));
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this.poly = new Poly1305(this.chacha.getBytes(64));
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this.tag = null;
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this._decrypt = decrypt;
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this._hasData = false;
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}
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Cipher.prototype.setAAD = function (aad) {
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if (this._hasData) {
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throw new Error('Attempting to set AAD in unsupported state');
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}
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this.alen += aad.length;
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this.poly.update(aad);
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// var padding = new Buffer(padAmount(this.alen));
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// if (padding.length) {
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// padding.fill(0);
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// this.poly.update(padding);
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// }
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//this.poly.update(len);
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};
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Cipher.prototype._flushlentag = function () {
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this._hasData = true;
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var len = new Buffer(8);
|
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len.fill(0);
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len.writeUInt32LE(this.alen, 0);
|
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this.poly.update(len);
|
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};
|
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Cipher.prototype._update = function (chunk) {
|
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if (!this._hasData) {
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this._flushlentag();
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}
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var len = chunk.length;
|
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if (!len) {
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return;
|
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}
|
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this.clen += len;
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var pad = this.chacha.getBytes(len);
|
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var i = -1;
|
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while (++i < len) {
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pad[i] ^= chunk[i];
|
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}
|
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if (this._decrypt) {
|
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this.poly.update(chunk);
|
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} else {
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this.poly.update(pad);
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}
|
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return pad;
|
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};
|
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Cipher.prototype._final = function () {
|
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if (this._decrypt && !this.tag) {
|
|
throw new Error('Unsupported state or unable to authenticate data');
|
|
}
|
|
if (!this._hasData) {
|
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this._flushlentag();
|
|
}
|
|
// var padding = new Buffer(padAmount(this.clen));
|
|
// if (padding.length) {
|
|
// padding.fill(0);
|
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// this.poly.update(padding);
|
|
// }
|
|
var lens = new Buffer(8);
|
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lens.fill(0);
|
|
//lens.writeUInt32LE(this.alen, 0);
|
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lens.writeUInt32LE(this.clen, 0);
|
|
var tag = this.poly.update(lens).finish();
|
|
if (this._decrypt) {
|
|
if (xorTest(tag, this.tag)) {
|
|
throw new Error('Unsupported state or unable to authenticate data');
|
|
}
|
|
} else {
|
|
this.tag = tag;
|
|
}
|
|
};
|
|
Cipher.prototype.getAuthTag = function () {
|
|
if(this._decrypt || this.tag === null) {
|
|
throw new Error('Attempting to get auth tag in unsupported state');
|
|
}
|
|
return this.tag;
|
|
};
|
|
Cipher.prototype.setAuthTag = function setAuthTag (tag) {
|
|
if (this._decrypt) {
|
|
this.tag = tag;
|
|
} else {
|
|
throw new Error('Attempting to set auth tag in unsupported state');
|
|
}
|
|
};
|
|
function padAmount(len) {
|
|
var rem = len % 16;
|
|
if (rem === 16) {
|
|
return 0;
|
|
}
|
|
return 16 - rem;
|
|
}
|
|
function xorTest(a, b) {
|
|
var out = 0;
|
|
if (a.length !== b.length) {
|
|
out++;
|
|
}
|
|
var len = Math.min(a.length, b.length);
|
|
var i = -1;
|
|
while (++i < len) {
|
|
out += (a[i] ^ b[i]);
|
|
}
|
|
return out;
|
|
}
|
|
|
|
}).call(this)}).call(this,require("buffer").Buffer)
|
|
},{"./chacha20":2,"./cipherbase":4,"./poly1305":7,"buffer":27,"inherits":10}],7:[function(require,module,exports){
|
|
(function (Buffer){(function (){
|
|
var Poly1305KeySize = 32;
|
|
var Poly1305TagSize = 16;
|
|
module.exports = Poly1305;
|
|
function Poly1305(key) {
|
|
if (!(this instanceof Poly1305)) {
|
|
return new Poly1305(key);
|
|
}
|
|
this.buffer = new Buffer(16);
|
|
this.leftover = 0;
|
|
this.r = new Uint16Array(10);
|
|
this.h = new Uint16Array(10);
|
|
this.pad = new Uint16Array(8);
|
|
this.finished = 0;
|
|
|
|
var t = new Uint16Array(8), i;
|
|
|
|
for (i = 8; i--;) t[i] = key.readUInt16LE(i*2);
|
|
|
|
this.r[0] = t[0] & 0x1fff;
|
|
this.r[1] = ((t[0] >>> 13) | (t[1] << 3)) & 0x1fff;
|
|
this.r[2] = ((t[1] >>> 10) | (t[2] << 6)) & 0x1f03;
|
|
this.r[3] = ((t[2] >>> 7) | (t[3] << 9)) & 0x1fff;
|
|
this.r[4] = ((t[3] >>> 4) | (t[4] << 12)) & 0x00ff;
|
|
this.r[5] = (t[4] >>> 1) & 0x1ffe;
|
|
this.r[6] = ((t[4] >>> 14) | (t[5] << 2)) & 0x1fff;
|
|
this.r[7] = ((t[5] >>> 11) | (t[6] << 5)) & 0x1f81;
|
|
this.r[8] = ((t[6] >>> 8) | (t[7] << 8)) & 0x1fff;
|
|
this.r[9] = (t[7] >>> 5) & 0x007f;
|
|
|
|
for (i = 8; i--;) {
|
|
this.h[i] = 0;
|
|
this.pad[i] = key.readUInt16LE( 16+(2*i));
|
|
}
|
|
this.h[8] = 0;
|
|
this.h[9] = 0;
|
|
this.leftover = 0;
|
|
this.finished = 0;
|
|
}
|
|
|
|
|
|
function U16TO8_LE(p, pos, v) {
|
|
p[pos] = v;
|
|
p[pos+1] = v >>> 8;
|
|
}
|
|
|
|
Poly1305.prototype.blocks = function(m, mpos, bytes) {
|
|
var hibit = this.finished ? 0 : (1 << 11);
|
|
var t = new Uint16Array(8),
|
|
d = new Uint32Array(10),
|
|
c = 0, i = 0, j = 0;
|
|
|
|
while (bytes >= 16) {
|
|
for (i = 8; i--;) t[i] = m.readUInt16LE(i*2+mpos);
|
|
|
|
this.h[0] += t[0] & 0x1fff;
|
|
this.h[1] += ((t[0] >>> 13) | (t[1] << 3)) & 0x1fff;
|
|
this.h[2] += ((t[1] >>> 10) | (t[2] << 6)) & 0x1fff;
|
|
this.h[3] += ((t[2] >>> 7) | (t[3] << 9)) & 0x1fff;
|
|
this.h[4] += ((t[3] >>> 4) | (t[4] << 12)) & 0x1fff;
|
|
this.h[5] += (t[4] >>> 1) & 0x1fff;
|
|
this.h[6] += ((t[4] >>> 14) | (t[5] << 2)) & 0x1fff;
|
|
this.h[7] += ((t[5] >>> 11) | (t[6] << 5)) & 0x1fff;
|
|
this.h[8] += ((t[6] >>> 8) | (t[7] << 8)) & 0x1fff;
|
|
this.h[9] += (t[7] >>> 5) | hibit;
|
|
|
|
for (i = 0, c = 0; i < 10; i++) {
|
|
d[i] = c;
|
|
for (j = 0; j < 10; j++) {
|
|
d[i] += (this.h[j] & 0xffffffff) * ((j <= i) ? this.r[i-j] : (5 * this.r[i+10-j]));
|
|
if (j === 4) {
|
|
c = (d[i] >>> 13);
|
|
d[i] &= 0x1fff;
|
|
}
|
|
}
|
|
c += (d[i] >>> 13);
|
|
d[i] &= 0x1fff;
|
|
}
|
|
c = ((c << 2) + c);
|
|
c += d[0];
|
|
d[0] = ((c & 0xffff) & 0x1fff);
|
|
c = (c >>> 13);
|
|
d[1] += c;
|
|
|
|
for (i = 10; i--;) this.h[i] = d[i];
|
|
|
|
mpos += 16;
|
|
bytes -= 16;
|
|
}
|
|
};
|
|
|
|
Poly1305.prototype.update = function(m) {
|
|
var bytes = m.length;
|
|
var want = 0, i = 0, mpos = 0;
|
|
// var chunk;
|
|
// this.buffer = Buffer.concat([this.buffer, m]);
|
|
// while (this.buffer.length >= 16) {
|
|
// chunk = this.buffer.slice(0, 16);
|
|
// this.buffer = this.buffer.slice(16)
|
|
// this.blocks(chunk, 0, 16);
|
|
// }
|
|
if (this.leftover) {
|
|
want = 16 - this.leftover;
|
|
if (want > bytes)
|
|
want = bytes;
|
|
for (i = want; i--;) {
|
|
this.buffer[this.leftover+i] = m[i+mpos];
|
|
}
|
|
bytes -= want;
|
|
mpos += want;
|
|
this.leftover += want;
|
|
if (this.leftover < 16)
|
|
return this;
|
|
this.blocks(this.buffer, 0, 16);
|
|
this.leftover = 0;
|
|
}
|
|
|
|
if (bytes >= 16) {
|
|
want = (bytes & ~(16 - 1));
|
|
this.blocks(m, mpos, want);
|
|
mpos += want;
|
|
bytes -= want;
|
|
}
|
|
|
|
if (bytes) {
|
|
for (i = bytes; i--;) {
|
|
this.buffer[this.leftover+i] = m[i+mpos];
|
|
}
|
|
this.leftover += bytes;
|
|
}
|
|
return this;
|
|
};
|
|
|
|
Poly1305.prototype.finish = function() {
|
|
var mac = new Buffer(16),
|
|
g = new Uint16Array(10),
|
|
c = 0, mask = 0, f = 0, i = 0;
|
|
if (this.leftover) {
|
|
i = this.leftover;
|
|
this.buffer[i++] = 1;
|
|
for (; i < 16; i++) {
|
|
this.buffer[i] = 0;
|
|
}
|
|
this.finished = 1;
|
|
this.blocks(this.buffer, 0, 16);
|
|
}
|
|
|
|
c = this.h[1] >>> 13;
|
|
this.h[1] &= 0x1fff;
|
|
for (i = 2; i < 10; i++) {
|
|
this.h[i] += c;
|
|
c = this.h[i] >>> 13;
|
|
this.h[i] &= 0x1fff;
|
|
}
|
|
this.h[0] += (c * 5);
|
|
c = this.h[0] >>> 13;
|
|
this.h[0] &= 0x1fff;
|
|
this.h[1] += c;
|
|
c = this.h[1] >>> 13;
|
|
this.h[1] &= 0x1fff;
|
|
this.h[2] += c;
|
|
|
|
g[0] = this.h[0] + 5;
|
|
c = g[0] >>> 13;
|
|
g[0] &= 0x1fff;
|
|
for (i = 1; i < 10; i++) {
|
|
g[i] = this.h[i] + c;
|
|
c = g[i] >>> 13;
|
|
g[i] &= 0x1fff;
|
|
}
|
|
g[9] -= (1 << 13);
|
|
|
|
mask = (g[9] >>> 15) - 1;
|
|
for (i = 10; i--;) g[i] &= mask;
|
|
mask = ~mask;
|
|
for (i = 10; i--;) {
|
|
this.h[i] = (this.h[i] & mask) | g[i];
|
|
}
|
|
|
|
this.h[0] = (this.h[0] ) | (this.h[1] << 13);
|
|
this.h[1] = (this.h[1] >> 3) | (this.h[2] << 10);
|
|
this.h[2] = (this.h[2] >> 6) | (this.h[3] << 7);
|
|
this.h[3] = (this.h[3] >> 9) | (this.h[4] << 4);
|
|
this.h[4] = (this.h[4] >> 12) | (this.h[5] << 1) | (this.h[6] << 14);
|
|
this.h[5] = (this.h[6] >> 2) | (this.h[7] << 11);
|
|
this.h[6] = (this.h[7] >> 5) | (this.h[8] << 8);
|
|
this.h[7] = (this.h[8] >> 8) | (this.h[9] << 5);
|
|
|
|
f = (this.h[0] & 0xffffffff) + this.pad[0];
|
|
this.h[0] = f;
|
|
for (i = 1; i < 8; i++) {
|
|
f = (this.h[i] & 0xffffffff) + this.pad[i] + (f >>> 16);
|
|
this.h[i] = f;
|
|
}
|
|
|
|
for (i = 8; i--;) {
|
|
mac.writeUInt16LE(this.h[i], i*2);
|
|
this.pad[i] = 0;
|
|
}
|
|
for (i = 10; i--;) {
|
|
this.h[i] = 0;
|
|
this.r[i] = 0;
|
|
}
|
|
|
|
return mac;
|
|
};
|
|
}).call(this)}).call(this,require("buffer").Buffer)
|
|
},{"buffer":27}],8:[function(require,module,exports){
|
|
var inherits = require('inherits');
|
|
|
|
var CipherBase = require('./cipherbase');
|
|
var Poly1305 = require('./poly1305');
|
|
module.exports = PolyStream;
|
|
inherits(PolyStream, CipherBase);
|
|
function PolyStream (key) {
|
|
if (!(this instanceof PolyStream)) {
|
|
return new PolyStream(key);
|
|
}
|
|
CipherBase.call(this, true);
|
|
this.poly = new Poly1305(key);
|
|
}
|
|
PolyStream.prototype._update = function (data) {
|
|
this.poly.update(data);
|
|
};
|
|
|
|
PolyStream.prototype._final = function () {
|
|
return this.poly.finish();
|
|
};
|
|
|
|
},{"./cipherbase":4,"./poly1305":7,"inherits":10}],9:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
// NOTE: These type checking functions intentionally don't use `instanceof`
|
|
// because it is fragile and can be easily faked with `Object.create()`.
|
|
|
|
function isArray(arg) {
|
|
if (Array.isArray) {
|
|
return Array.isArray(arg);
|
|
}
|
|
return objectToString(arg) === '[object Array]';
|
|
}
|
|
exports.isArray = isArray;
|
|
|
|
function isBoolean(arg) {
|
|
return typeof arg === 'boolean';
|
|
}
|
|
exports.isBoolean = isBoolean;
|
|
|
|
function isNull(arg) {
|
|
return arg === null;
|
|
}
|
|
exports.isNull = isNull;
|
|
|
|
function isNullOrUndefined(arg) {
|
|
return arg == null;
|
|
}
|
|
exports.isNullOrUndefined = isNullOrUndefined;
|
|
|
|
function isNumber(arg) {
|
|
return typeof arg === 'number';
|
|
}
|
|
exports.isNumber = isNumber;
|
|
|
|
function isString(arg) {
|
|
return typeof arg === 'string';
|
|
}
|
|
exports.isString = isString;
|
|
|
|
function isSymbol(arg) {
|
|
return typeof arg === 'symbol';
|
|
}
|
|
exports.isSymbol = isSymbol;
|
|
|
|
function isUndefined(arg) {
|
|
return arg === void 0;
|
|
}
|
|
exports.isUndefined = isUndefined;
|
|
|
|
function isRegExp(re) {
|
|
return objectToString(re) === '[object RegExp]';
|
|
}
|
|
exports.isRegExp = isRegExp;
|
|
|
|
function isObject(arg) {
|
|
return typeof arg === 'object' && arg !== null;
|
|
}
|
|
exports.isObject = isObject;
|
|
|
|
function isDate(d) {
|
|
return objectToString(d) === '[object Date]';
|
|
}
|
|
exports.isDate = isDate;
|
|
|
|
function isError(e) {
|
|
return (objectToString(e) === '[object Error]' || e instanceof Error);
|
|
}
|
|
exports.isError = isError;
|
|
|
|
function isFunction(arg) {
|
|
return typeof arg === 'function';
|
|
}
|
|
exports.isFunction = isFunction;
|
|
|
|
function isPrimitive(arg) {
|
|
return arg === null ||
|
|
typeof arg === 'boolean' ||
|
|
typeof arg === 'number' ||
|
|
typeof arg === 'string' ||
|
|
typeof arg === 'symbol' || // ES6 symbol
|
|
typeof arg === 'undefined';
|
|
}
|
|
exports.isPrimitive = isPrimitive;
|
|
|
|
exports.isBuffer = require('buffer').Buffer.isBuffer;
|
|
|
|
function objectToString(o) {
|
|
return Object.prototype.toString.call(o);
|
|
}
|
|
|
|
},{"buffer":27}],10:[function(require,module,exports){
|
|
if (typeof Object.create === 'function') {
|
|
// implementation from standard node.js 'util' module
|
|
module.exports = function inherits(ctor, superCtor) {
|
|
if (superCtor) {
|
|
ctor.super_ = superCtor
|
|
ctor.prototype = Object.create(superCtor.prototype, {
|
|
constructor: {
|
|
value: ctor,
|
|
enumerable: false,
|
|
writable: true,
|
|
configurable: true
|
|
}
|
|
})
|
|
}
|
|
};
|
|
} else {
|
|
// old school shim for old browsers
|
|
module.exports = function inherits(ctor, superCtor) {
|
|
if (superCtor) {
|
|
ctor.super_ = superCtor
|
|
var TempCtor = function () {}
|
|
TempCtor.prototype = superCtor.prototype
|
|
ctor.prototype = new TempCtor()
|
|
ctor.prototype.constructor = ctor
|
|
}
|
|
}
|
|
}
|
|
|
|
},{}],11:[function(require,module,exports){
|
|
var toString = {}.toString;
|
|
|
|
module.exports = Array.isArray || function (arr) {
|
|
return toString.call(arr) == '[object Array]';
|
|
};
|
|
|
|
},{}],12:[function(require,module,exports){
|
|
(function (process){(function (){
|
|
'use strict';
|
|
|
|
if (typeof process === 'undefined' ||
|
|
!process.version ||
|
|
process.version.indexOf('v0.') === 0 ||
|
|
process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
|
|
module.exports = { nextTick: nextTick };
|
|
} else {
|
|
module.exports = process
|
|
}
|
|
|
|
function nextTick(fn, arg1, arg2, arg3) {
|
|
if (typeof fn !== 'function') {
|
|
throw new TypeError('"callback" argument must be a function');
|
|
}
|
|
var len = arguments.length;
|
|
var args, i;
|
|
switch (len) {
|
|
case 0:
|
|
case 1:
|
|
return process.nextTick(fn);
|
|
case 2:
|
|
return process.nextTick(function afterTickOne() {
|
|
fn.call(null, arg1);
|
|
});
|
|
case 3:
|
|
return process.nextTick(function afterTickTwo() {
|
|
fn.call(null, arg1, arg2);
|
|
});
|
|
case 4:
|
|
return process.nextTick(function afterTickThree() {
|
|
fn.call(null, arg1, arg2, arg3);
|
|
});
|
|
default:
|
|
args = new Array(len - 1);
|
|
i = 0;
|
|
while (i < args.length) {
|
|
args[i++] = arguments[i];
|
|
}
|
|
return process.nextTick(function afterTick() {
|
|
fn.apply(null, args);
|
|
});
|
|
}
|
|
}
|
|
|
|
|
|
}).call(this)}).call(this,require('_process'))
|
|
},{"_process":30}],13:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
// a duplex stream is just a stream that is both readable and writable.
|
|
// Since JS doesn't have multiple prototypal inheritance, this class
|
|
// prototypally inherits from Readable, and then parasitically from
|
|
// Writable.
|
|
|
|
'use strict';
|
|
|
|
/*<replacement>*/
|
|
|
|
var pna = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var objectKeys = Object.keys || function (obj) {
|
|
var keys = [];
|
|
for (var key in obj) {
|
|
keys.push(key);
|
|
}return keys;
|
|
};
|
|
/*</replacement>*/
|
|
|
|
module.exports = Duplex;
|
|
|
|
/*<replacement>*/
|
|
var util = Object.create(require('core-util-is'));
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
var Readable = require('./_stream_readable');
|
|
var Writable = require('./_stream_writable');
|
|
|
|
util.inherits(Duplex, Readable);
|
|
|
|
{
|
|
// avoid scope creep, the keys array can then be collected
|
|
var keys = objectKeys(Writable.prototype);
|
|
for (var v = 0; v < keys.length; v++) {
|
|
var method = keys[v];
|
|
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
|
|
}
|
|
}
|
|
|
|
function Duplex(options) {
|
|
if (!(this instanceof Duplex)) return new Duplex(options);
|
|
|
|
Readable.call(this, options);
|
|
Writable.call(this, options);
|
|
|
|
if (options && options.readable === false) this.readable = false;
|
|
|
|
if (options && options.writable === false) this.writable = false;
|
|
|
|
this.allowHalfOpen = true;
|
|
if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
|
|
|
|
this.once('end', onend);
|
|
}
|
|
|
|
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
|
|
// making it explicit this property is not enumerable
|
|
// because otherwise some prototype manipulation in
|
|
// userland will fail
|
|
enumerable: false,
|
|
get: function () {
|
|
return this._writableState.highWaterMark;
|
|
}
|
|
});
|
|
|
|
// the no-half-open enforcer
|
|
function onend() {
|
|
// if we allow half-open state, or if the writable side ended,
|
|
// then we're ok.
|
|
if (this.allowHalfOpen || this._writableState.ended) return;
|
|
|
|
// no more data can be written.
|
|
// But allow more writes to happen in this tick.
|
|
pna.nextTick(onEndNT, this);
|
|
}
|
|
|
|
function onEndNT(self) {
|
|
self.end();
|
|
}
|
|
|
|
Object.defineProperty(Duplex.prototype, 'destroyed', {
|
|
get: function () {
|
|
if (this._readableState === undefined || this._writableState === undefined) {
|
|
return false;
|
|
}
|
|
return this._readableState.destroyed && this._writableState.destroyed;
|
|
},
|
|
set: function (value) {
|
|
// we ignore the value if the stream
|
|
// has not been initialized yet
|
|
if (this._readableState === undefined || this._writableState === undefined) {
|
|
return;
|
|
}
|
|
|
|
// backward compatibility, the user is explicitly
|
|
// managing destroyed
|
|
this._readableState.destroyed = value;
|
|
this._writableState.destroyed = value;
|
|
}
|
|
});
|
|
|
|
Duplex.prototype._destroy = function (err, cb) {
|
|
this.push(null);
|
|
this.end();
|
|
|
|
pna.nextTick(cb, err);
|
|
};
|
|
},{"./_stream_readable":15,"./_stream_writable":17,"core-util-is":9,"inherits":10,"process-nextick-args":12}],14:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
// a passthrough stream.
|
|
// basically just the most minimal sort of Transform stream.
|
|
// Every written chunk gets output as-is.
|
|
|
|
'use strict';
|
|
|
|
module.exports = PassThrough;
|
|
|
|
var Transform = require('./_stream_transform');
|
|
|
|
/*<replacement>*/
|
|
var util = Object.create(require('core-util-is'));
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
util.inherits(PassThrough, Transform);
|
|
|
|
function PassThrough(options) {
|
|
if (!(this instanceof PassThrough)) return new PassThrough(options);
|
|
|
|
Transform.call(this, options);
|
|
}
|
|
|
|
PassThrough.prototype._transform = function (chunk, encoding, cb) {
|
|
cb(null, chunk);
|
|
};
|
|
},{"./_stream_transform":16,"core-util-is":9,"inherits":10}],15:[function(require,module,exports){
|
|
(function (process,global){(function (){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
'use strict';
|
|
|
|
/*<replacement>*/
|
|
|
|
var pna = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
module.exports = Readable;
|
|
|
|
/*<replacement>*/
|
|
var isArray = require('isarray');
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var Duplex;
|
|
/*</replacement>*/
|
|
|
|
Readable.ReadableState = ReadableState;
|
|
|
|
/*<replacement>*/
|
|
var EE = require('events').EventEmitter;
|
|
|
|
var EElistenerCount = function (emitter, type) {
|
|
return emitter.listeners(type).length;
|
|
};
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var Stream = require('./internal/streams/stream');
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
|
|
var Buffer = require('safe-buffer').Buffer;
|
|
var OurUint8Array = global.Uint8Array || function () {};
|
|
function _uint8ArrayToBuffer(chunk) {
|
|
return Buffer.from(chunk);
|
|
}
|
|
function _isUint8Array(obj) {
|
|
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
|
|
}
|
|
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var util = Object.create(require('core-util-is'));
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var debugUtil = require('util');
|
|
var debug = void 0;
|
|
if (debugUtil && debugUtil.debuglog) {
|
|
debug = debugUtil.debuglog('stream');
|
|
} else {
|
|
debug = function () {};
|
|
}
|
|
/*</replacement>*/
|
|
|
|
var BufferList = require('./internal/streams/BufferList');
|
|
var destroyImpl = require('./internal/streams/destroy');
|
|
var StringDecoder;
|
|
|
|
util.inherits(Readable, Stream);
|
|
|
|
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
|
|
|
|
function prependListener(emitter, event, fn) {
|
|
// Sadly this is not cacheable as some libraries bundle their own
|
|
// event emitter implementation with them.
|
|
if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);
|
|
|
|
// This is a hack to make sure that our error handler is attached before any
|
|
// userland ones. NEVER DO THIS. This is here only because this code needs
|
|
// to continue to work with older versions of Node.js that do not include
|
|
// the prependListener() method. The goal is to eventually remove this hack.
|
|
if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
|
|
}
|
|
|
|
function ReadableState(options, stream) {
|
|
Duplex = Duplex || require('./_stream_duplex');
|
|
|
|
options = options || {};
|
|
|
|
// Duplex streams are both readable and writable, but share
|
|
// the same options object.
|
|
// However, some cases require setting options to different
|
|
// values for the readable and the writable sides of the duplex stream.
|
|
// These options can be provided separately as readableXXX and writableXXX.
|
|
var isDuplex = stream instanceof Duplex;
|
|
|
|
// object stream flag. Used to make read(n) ignore n and to
|
|
// make all the buffer merging and length checks go away
|
|
this.objectMode = !!options.objectMode;
|
|
|
|
if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
|
|
|
|
// the point at which it stops calling _read() to fill the buffer
|
|
// Note: 0 is a valid value, means "don't call _read preemptively ever"
|
|
var hwm = options.highWaterMark;
|
|
var readableHwm = options.readableHighWaterMark;
|
|
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
|
|
|
|
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;
|
|
|
|
// cast to ints.
|
|
this.highWaterMark = Math.floor(this.highWaterMark);
|
|
|
|
// A linked list is used to store data chunks instead of an array because the
|
|
// linked list can remove elements from the beginning faster than
|
|
// array.shift()
|
|
this.buffer = new BufferList();
|
|
this.length = 0;
|
|
this.pipes = null;
|
|
this.pipesCount = 0;
|
|
this.flowing = null;
|
|
this.ended = false;
|
|
this.endEmitted = false;
|
|
this.reading = false;
|
|
|
|
// a flag to be able to tell if the event 'readable'/'data' is emitted
|
|
// immediately, or on a later tick. We set this to true at first, because
|
|
// any actions that shouldn't happen until "later" should generally also
|
|
// not happen before the first read call.
|
|
this.sync = true;
|
|
|
|
// whenever we return null, then we set a flag to say
|
|
// that we're awaiting a 'readable' event emission.
|
|
this.needReadable = false;
|
|
this.emittedReadable = false;
|
|
this.readableListening = false;
|
|
this.resumeScheduled = false;
|
|
|
|
// has it been destroyed
|
|
this.destroyed = false;
|
|
|
|
// Crypto is kind of old and crusty. Historically, its default string
|
|
// encoding is 'binary' so we have to make this configurable.
|
|
// Everything else in the universe uses 'utf8', though.
|
|
this.defaultEncoding = options.defaultEncoding || 'utf8';
|
|
|
|
// the number of writers that are awaiting a drain event in .pipe()s
|
|
this.awaitDrain = 0;
|
|
|
|
// if true, a maybeReadMore has been scheduled
|
|
this.readingMore = false;
|
|
|
|
this.decoder = null;
|
|
this.encoding = null;
|
|
if (options.encoding) {
|
|
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
|
|
this.decoder = new StringDecoder(options.encoding);
|
|
this.encoding = options.encoding;
|
|
}
|
|
}
|
|
|
|
function Readable(options) {
|
|
Duplex = Duplex || require('./_stream_duplex');
|
|
|
|
if (!(this instanceof Readable)) return new Readable(options);
|
|
|
|
this._readableState = new ReadableState(options, this);
|
|
|
|
// legacy
|
|
this.readable = true;
|
|
|
|
if (options) {
|
|
if (typeof options.read === 'function') this._read = options.read;
|
|
|
|
if (typeof options.destroy === 'function') this._destroy = options.destroy;
|
|
}
|
|
|
|
Stream.call(this);
|
|
}
|
|
|
|
Object.defineProperty(Readable.prototype, 'destroyed', {
|
|
get: function () {
|
|
if (this._readableState === undefined) {
|
|
return false;
|
|
}
|
|
return this._readableState.destroyed;
|
|
},
|
|
set: function (value) {
|
|
// we ignore the value if the stream
|
|
// has not been initialized yet
|
|
if (!this._readableState) {
|
|
return;
|
|
}
|
|
|
|
// backward compatibility, the user is explicitly
|
|
// managing destroyed
|
|
this._readableState.destroyed = value;
|
|
}
|
|
});
|
|
|
|
Readable.prototype.destroy = destroyImpl.destroy;
|
|
Readable.prototype._undestroy = destroyImpl.undestroy;
|
|
Readable.prototype._destroy = function (err, cb) {
|
|
this.push(null);
|
|
cb(err);
|
|
};
|
|
|
|
// Manually shove something into the read() buffer.
|
|
// This returns true if the highWaterMark has not been hit yet,
|
|
// similar to how Writable.write() returns true if you should
|
|
// write() some more.
|
|
Readable.prototype.push = function (chunk, encoding) {
|
|
var state = this._readableState;
|
|
var skipChunkCheck;
|
|
|
|
if (!state.objectMode) {
|
|
if (typeof chunk === 'string') {
|
|
encoding = encoding || state.defaultEncoding;
|
|
if (encoding !== state.encoding) {
|
|
chunk = Buffer.from(chunk, encoding);
|
|
encoding = '';
|
|
}
|
|
skipChunkCheck = true;
|
|
}
|
|
} else {
|
|
skipChunkCheck = true;
|
|
}
|
|
|
|
return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
|
|
};
|
|
|
|
// Unshift should *always* be something directly out of read()
|
|
Readable.prototype.unshift = function (chunk) {
|
|
return readableAddChunk(this, chunk, null, true, false);
|
|
};
|
|
|
|
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
|
|
var state = stream._readableState;
|
|
if (chunk === null) {
|
|
state.reading = false;
|
|
onEofChunk(stream, state);
|
|
} else {
|
|
var er;
|
|
if (!skipChunkCheck) er = chunkInvalid(state, chunk);
|
|
if (er) {
|
|
stream.emit('error', er);
|
|
} else if (state.objectMode || chunk && chunk.length > 0) {
|
|
if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
|
|
chunk = _uint8ArrayToBuffer(chunk);
|
|
}
|
|
|
|
if (addToFront) {
|
|
if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
|
|
} else if (state.ended) {
|
|
stream.emit('error', new Error('stream.push() after EOF'));
|
|
} else {
|
|
state.reading = false;
|
|
if (state.decoder && !encoding) {
|
|
chunk = state.decoder.write(chunk);
|
|
if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
|
|
} else {
|
|
addChunk(stream, state, chunk, false);
|
|
}
|
|
}
|
|
} else if (!addToFront) {
|
|
state.reading = false;
|
|
}
|
|
}
|
|
|
|
return needMoreData(state);
|
|
}
|
|
|
|
function addChunk(stream, state, chunk, addToFront) {
|
|
if (state.flowing && state.length === 0 && !state.sync) {
|
|
stream.emit('data', chunk);
|
|
stream.read(0);
|
|
} else {
|
|
// update the buffer info.
|
|
state.length += state.objectMode ? 1 : chunk.length;
|
|
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
|
|
|
|
if (state.needReadable) emitReadable(stream);
|
|
}
|
|
maybeReadMore(stream, state);
|
|
}
|
|
|
|
function chunkInvalid(state, chunk) {
|
|
var er;
|
|
if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
|
|
er = new TypeError('Invalid non-string/buffer chunk');
|
|
}
|
|
return er;
|
|
}
|
|
|
|
// if it's past the high water mark, we can push in some more.
|
|
// Also, if we have no data yet, we can stand some
|
|
// more bytes. This is to work around cases where hwm=0,
|
|
// such as the repl. Also, if the push() triggered a
|
|
// readable event, and the user called read(largeNumber) such that
|
|
// needReadable was set, then we ought to push more, so that another
|
|
// 'readable' event will be triggered.
|
|
function needMoreData(state) {
|
|
return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
|
|
}
|
|
|
|
Readable.prototype.isPaused = function () {
|
|
return this._readableState.flowing === false;
|
|
};
|
|
|
|
// backwards compatibility.
|
|
Readable.prototype.setEncoding = function (enc) {
|
|
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
|
|
this._readableState.decoder = new StringDecoder(enc);
|
|
this._readableState.encoding = enc;
|
|
return this;
|
|
};
|
|
|
|
// Don't raise the hwm > 8MB
|
|
var MAX_HWM = 0x800000;
|
|
function computeNewHighWaterMark(n) {
|
|
if (n >= MAX_HWM) {
|
|
n = MAX_HWM;
|
|
} else {
|
|
// Get the next highest power of 2 to prevent increasing hwm excessively in
|
|
// tiny amounts
|
|
n--;
|
|
n |= n >>> 1;
|
|
n |= n >>> 2;
|
|
n |= n >>> 4;
|
|
n |= n >>> 8;
|
|
n |= n >>> 16;
|
|
n++;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
// This function is designed to be inlinable, so please take care when making
|
|
// changes to the function body.
|
|
function howMuchToRead(n, state) {
|
|
if (n <= 0 || state.length === 0 && state.ended) return 0;
|
|
if (state.objectMode) return 1;
|
|
if (n !== n) {
|
|
// Only flow one buffer at a time
|
|
if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
|
|
}
|
|
// If we're asking for more than the current hwm, then raise the hwm.
|
|
if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
|
|
if (n <= state.length) return n;
|
|
// Don't have enough
|
|
if (!state.ended) {
|
|
state.needReadable = true;
|
|
return 0;
|
|
}
|
|
return state.length;
|
|
}
|
|
|
|
// you can override either this method, or the async _read(n) below.
|
|
Readable.prototype.read = function (n) {
|
|
debug('read', n);
|
|
n = parseInt(n, 10);
|
|
var state = this._readableState;
|
|
var nOrig = n;
|
|
|
|
if (n !== 0) state.emittedReadable = false;
|
|
|
|
// if we're doing read(0) to trigger a readable event, but we
|
|
// already have a bunch of data in the buffer, then just trigger
|
|
// the 'readable' event and move on.
|
|
if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
|
|
debug('read: emitReadable', state.length, state.ended);
|
|
if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
|
|
return null;
|
|
}
|
|
|
|
n = howMuchToRead(n, state);
|
|
|
|
// if we've ended, and we're now clear, then finish it up.
|
|
if (n === 0 && state.ended) {
|
|
if (state.length === 0) endReadable(this);
|
|
return null;
|
|
}
|
|
|
|
// All the actual chunk generation logic needs to be
|
|
// *below* the call to _read. The reason is that in certain
|
|
// synthetic stream cases, such as passthrough streams, _read
|
|
// may be a completely synchronous operation which may change
|
|
// the state of the read buffer, providing enough data when
|
|
// before there was *not* enough.
|
|
//
|
|
// So, the steps are:
|
|
// 1. Figure out what the state of things will be after we do
|
|
// a read from the buffer.
|
|
//
|
|
// 2. If that resulting state will trigger a _read, then call _read.
|
|
// Note that this may be asynchronous, or synchronous. Yes, it is
|
|
// deeply ugly to write APIs this way, but that still doesn't mean
|
|
// that the Readable class should behave improperly, as streams are
|
|
// designed to be sync/async agnostic.
|
|
// Take note if the _read call is sync or async (ie, if the read call
|
|
// has returned yet), so that we know whether or not it's safe to emit
|
|
// 'readable' etc.
|
|
//
|
|
// 3. Actually pull the requested chunks out of the buffer and return.
|
|
|
|
// if we need a readable event, then we need to do some reading.
|
|
var doRead = state.needReadable;
|
|
debug('need readable', doRead);
|
|
|
|
// if we currently have less than the highWaterMark, then also read some
|
|
if (state.length === 0 || state.length - n < state.highWaterMark) {
|
|
doRead = true;
|
|
debug('length less than watermark', doRead);
|
|
}
|
|
|
|
// however, if we've ended, then there's no point, and if we're already
|
|
// reading, then it's unnecessary.
|
|
if (state.ended || state.reading) {
|
|
doRead = false;
|
|
debug('reading or ended', doRead);
|
|
} else if (doRead) {
|
|
debug('do read');
|
|
state.reading = true;
|
|
state.sync = true;
|
|
// if the length is currently zero, then we *need* a readable event.
|
|
if (state.length === 0) state.needReadable = true;
|
|
// call internal read method
|
|
this._read(state.highWaterMark);
|
|
state.sync = false;
|
|
// If _read pushed data synchronously, then `reading` will be false,
|
|
// and we need to re-evaluate how much data we can return to the user.
|
|
if (!state.reading) n = howMuchToRead(nOrig, state);
|
|
}
|
|
|
|
var ret;
|
|
if (n > 0) ret = fromList(n, state);else ret = null;
|
|
|
|
if (ret === null) {
|
|
state.needReadable = true;
|
|
n = 0;
|
|
} else {
|
|
state.length -= n;
|
|
}
|
|
|
|
if (state.length === 0) {
|
|
// If we have nothing in the buffer, then we want to know
|
|
// as soon as we *do* get something into the buffer.
|
|
if (!state.ended) state.needReadable = true;
|
|
|
|
// If we tried to read() past the EOF, then emit end on the next tick.
|
|
if (nOrig !== n && state.ended) endReadable(this);
|
|
}
|
|
|
|
if (ret !== null) this.emit('data', ret);
|
|
|
|
return ret;
|
|
};
|
|
|
|
function onEofChunk(stream, state) {
|
|
if (state.ended) return;
|
|
if (state.decoder) {
|
|
var chunk = state.decoder.end();
|
|
if (chunk && chunk.length) {
|
|
state.buffer.push(chunk);
|
|
state.length += state.objectMode ? 1 : chunk.length;
|
|
}
|
|
}
|
|
state.ended = true;
|
|
|
|
// emit 'readable' now to make sure it gets picked up.
|
|
emitReadable(stream);
|
|
}
|
|
|
|
// Don't emit readable right away in sync mode, because this can trigger
|
|
// another read() call => stack overflow. This way, it might trigger
|
|
// a nextTick recursion warning, but that's not so bad.
|
|
function emitReadable(stream) {
|
|
var state = stream._readableState;
|
|
state.needReadable = false;
|
|
if (!state.emittedReadable) {
|
|
debug('emitReadable', state.flowing);
|
|
state.emittedReadable = true;
|
|
if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
|
|
}
|
|
}
|
|
|
|
function emitReadable_(stream) {
|
|
debug('emit readable');
|
|
stream.emit('readable');
|
|
flow(stream);
|
|
}
|
|
|
|
// at this point, the user has presumably seen the 'readable' event,
|
|
// and called read() to consume some data. that may have triggered
|
|
// in turn another _read(n) call, in which case reading = true if
|
|
// it's in progress.
|
|
// However, if we're not ended, or reading, and the length < hwm,
|
|
// then go ahead and try to read some more preemptively.
|
|
function maybeReadMore(stream, state) {
|
|
if (!state.readingMore) {
|
|
state.readingMore = true;
|
|
pna.nextTick(maybeReadMore_, stream, state);
|
|
}
|
|
}
|
|
|
|
function maybeReadMore_(stream, state) {
|
|
var len = state.length;
|
|
while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
|
|
debug('maybeReadMore read 0');
|
|
stream.read(0);
|
|
if (len === state.length)
|
|
// didn't get any data, stop spinning.
|
|
break;else len = state.length;
|
|
}
|
|
state.readingMore = false;
|
|
}
|
|
|
|
// abstract method. to be overridden in specific implementation classes.
|
|
// call cb(er, data) where data is <= n in length.
|
|
// for virtual (non-string, non-buffer) streams, "length" is somewhat
|
|
// arbitrary, and perhaps not very meaningful.
|
|
Readable.prototype._read = function (n) {
|
|
this.emit('error', new Error('_read() is not implemented'));
|
|
};
|
|
|
|
Readable.prototype.pipe = function (dest, pipeOpts) {
|
|
var src = this;
|
|
var state = this._readableState;
|
|
|
|
switch (state.pipesCount) {
|
|
case 0:
|
|
state.pipes = dest;
|
|
break;
|
|
case 1:
|
|
state.pipes = [state.pipes, dest];
|
|
break;
|
|
default:
|
|
state.pipes.push(dest);
|
|
break;
|
|
}
|
|
state.pipesCount += 1;
|
|
debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
|
|
|
|
var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
|
|
|
|
var endFn = doEnd ? onend : unpipe;
|
|
if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);
|
|
|
|
dest.on('unpipe', onunpipe);
|
|
function onunpipe(readable, unpipeInfo) {
|
|
debug('onunpipe');
|
|
if (readable === src) {
|
|
if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
|
|
unpipeInfo.hasUnpiped = true;
|
|
cleanup();
|
|
}
|
|
}
|
|
}
|
|
|
|
function onend() {
|
|
debug('onend');
|
|
dest.end();
|
|
}
|
|
|
|
// when the dest drains, it reduces the awaitDrain counter
|
|
// on the source. This would be more elegant with a .once()
|
|
// handler in flow(), but adding and removing repeatedly is
|
|
// too slow.
|
|
var ondrain = pipeOnDrain(src);
|
|
dest.on('drain', ondrain);
|
|
|
|
var cleanedUp = false;
|
|
function cleanup() {
|
|
debug('cleanup');
|
|
// cleanup event handlers once the pipe is broken
|
|
dest.removeListener('close', onclose);
|
|
dest.removeListener('finish', onfinish);
|
|
dest.removeListener('drain', ondrain);
|
|
dest.removeListener('error', onerror);
|
|
dest.removeListener('unpipe', onunpipe);
|
|
src.removeListener('end', onend);
|
|
src.removeListener('end', unpipe);
|
|
src.removeListener('data', ondata);
|
|
|
|
cleanedUp = true;
|
|
|
|
// if the reader is waiting for a drain event from this
|
|
// specific writer, then it would cause it to never start
|
|
// flowing again.
|
|
// So, if this is awaiting a drain, then we just call it now.
|
|
// If we don't know, then assume that we are waiting for one.
|
|
if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
|
|
}
|
|
|
|
// If the user pushes more data while we're writing to dest then we'll end up
|
|
// in ondata again. However, we only want to increase awaitDrain once because
|
|
// dest will only emit one 'drain' event for the multiple writes.
|
|
// => Introduce a guard on increasing awaitDrain.
|
|
var increasedAwaitDrain = false;
|
|
src.on('data', ondata);
|
|
function ondata(chunk) {
|
|
debug('ondata');
|
|
increasedAwaitDrain = false;
|
|
var ret = dest.write(chunk);
|
|
if (false === ret && !increasedAwaitDrain) {
|
|
// If the user unpiped during `dest.write()`, it is possible
|
|
// to get stuck in a permanently paused state if that write
|
|
// also returned false.
|
|
// => Check whether `dest` is still a piping destination.
|
|
if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
|
|
debug('false write response, pause', src._readableState.awaitDrain);
|
|
src._readableState.awaitDrain++;
|
|
increasedAwaitDrain = true;
|
|
}
|
|
src.pause();
|
|
}
|
|
}
|
|
|
|
// if the dest has an error, then stop piping into it.
|
|
// however, don't suppress the throwing behavior for this.
|
|
function onerror(er) {
|
|
debug('onerror', er);
|
|
unpipe();
|
|
dest.removeListener('error', onerror);
|
|
if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
|
|
}
|
|
|
|
// Make sure our error handler is attached before userland ones.
|
|
prependListener(dest, 'error', onerror);
|
|
|
|
// Both close and finish should trigger unpipe, but only once.
|
|
function onclose() {
|
|
dest.removeListener('finish', onfinish);
|
|
unpipe();
|
|
}
|
|
dest.once('close', onclose);
|
|
function onfinish() {
|
|
debug('onfinish');
|
|
dest.removeListener('close', onclose);
|
|
unpipe();
|
|
}
|
|
dest.once('finish', onfinish);
|
|
|
|
function unpipe() {
|
|
debug('unpipe');
|
|
src.unpipe(dest);
|
|
}
|
|
|
|
// tell the dest that it's being piped to
|
|
dest.emit('pipe', src);
|
|
|
|
// start the flow if it hasn't been started already.
|
|
if (!state.flowing) {
|
|
debug('pipe resume');
|
|
src.resume();
|
|
}
|
|
|
|
return dest;
|
|
};
|
|
|
|
function pipeOnDrain(src) {
|
|
return function () {
|
|
var state = src._readableState;
|
|
debug('pipeOnDrain', state.awaitDrain);
|
|
if (state.awaitDrain) state.awaitDrain--;
|
|
if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
|
|
state.flowing = true;
|
|
flow(src);
|
|
}
|
|
};
|
|
}
|
|
|
|
Readable.prototype.unpipe = function (dest) {
|
|
var state = this._readableState;
|
|
var unpipeInfo = { hasUnpiped: false };
|
|
|
|
// if we're not piping anywhere, then do nothing.
|
|
if (state.pipesCount === 0) return this;
|
|
|
|
// just one destination. most common case.
|
|
if (state.pipesCount === 1) {
|
|
// passed in one, but it's not the right one.
|
|
if (dest && dest !== state.pipes) return this;
|
|
|
|
if (!dest) dest = state.pipes;
|
|
|
|
// got a match.
|
|
state.pipes = null;
|
|
state.pipesCount = 0;
|
|
state.flowing = false;
|
|
if (dest) dest.emit('unpipe', this, unpipeInfo);
|
|
return this;
|
|
}
|
|
|
|
// slow case. multiple pipe destinations.
|
|
|
|
if (!dest) {
|
|
// remove all.
|
|
var dests = state.pipes;
|
|
var len = state.pipesCount;
|
|
state.pipes = null;
|
|
state.pipesCount = 0;
|
|
state.flowing = false;
|
|
|
|
for (var i = 0; i < len; i++) {
|
|
dests[i].emit('unpipe', this, unpipeInfo);
|
|
}return this;
|
|
}
|
|
|
|
// try to find the right one.
|
|
var index = indexOf(state.pipes, dest);
|
|
if (index === -1) return this;
|
|
|
|
state.pipes.splice(index, 1);
|
|
state.pipesCount -= 1;
|
|
if (state.pipesCount === 1) state.pipes = state.pipes[0];
|
|
|
|
dest.emit('unpipe', this, unpipeInfo);
|
|
|
|
return this;
|
|
};
|
|
|
|
// set up data events if they are asked for
|
|
// Ensure readable listeners eventually get something
|
|
Readable.prototype.on = function (ev, fn) {
|
|
var res = Stream.prototype.on.call(this, ev, fn);
|
|
|
|
if (ev === 'data') {
|
|
// Start flowing on next tick if stream isn't explicitly paused
|
|
if (this._readableState.flowing !== false) this.resume();
|
|
} else if (ev === 'readable') {
|
|
var state = this._readableState;
|
|
if (!state.endEmitted && !state.readableListening) {
|
|
state.readableListening = state.needReadable = true;
|
|
state.emittedReadable = false;
|
|
if (!state.reading) {
|
|
pna.nextTick(nReadingNextTick, this);
|
|
} else if (state.length) {
|
|
emitReadable(this);
|
|
}
|
|
}
|
|
}
|
|
|
|
return res;
|
|
};
|
|
Readable.prototype.addListener = Readable.prototype.on;
|
|
|
|
function nReadingNextTick(self) {
|
|
debug('readable nexttick read 0');
|
|
self.read(0);
|
|
}
|
|
|
|
// pause() and resume() are remnants of the legacy readable stream API
|
|
// If the user uses them, then switch into old mode.
|
|
Readable.prototype.resume = function () {
|
|
var state = this._readableState;
|
|
if (!state.flowing) {
|
|
debug('resume');
|
|
state.flowing = true;
|
|
resume(this, state);
|
|
}
|
|
return this;
|
|
};
|
|
|
|
function resume(stream, state) {
|
|
if (!state.resumeScheduled) {
|
|
state.resumeScheduled = true;
|
|
pna.nextTick(resume_, stream, state);
|
|
}
|
|
}
|
|
|
|
function resume_(stream, state) {
|
|
if (!state.reading) {
|
|
debug('resume read 0');
|
|
stream.read(0);
|
|
}
|
|
|
|
state.resumeScheduled = false;
|
|
state.awaitDrain = 0;
|
|
stream.emit('resume');
|
|
flow(stream);
|
|
if (state.flowing && !state.reading) stream.read(0);
|
|
}
|
|
|
|
Readable.prototype.pause = function () {
|
|
debug('call pause flowing=%j', this._readableState.flowing);
|
|
if (false !== this._readableState.flowing) {
|
|
debug('pause');
|
|
this._readableState.flowing = false;
|
|
this.emit('pause');
|
|
}
|
|
return this;
|
|
};
|
|
|
|
function flow(stream) {
|
|
var state = stream._readableState;
|
|
debug('flow', state.flowing);
|
|
while (state.flowing && stream.read() !== null) {}
|
|
}
|
|
|
|
// wrap an old-style stream as the async data source.
|
|
// This is *not* part of the readable stream interface.
|
|
// It is an ugly unfortunate mess of history.
|
|
Readable.prototype.wrap = function (stream) {
|
|
var _this = this;
|
|
|
|
var state = this._readableState;
|
|
var paused = false;
|
|
|
|
stream.on('end', function () {
|
|
debug('wrapped end');
|
|
if (state.decoder && !state.ended) {
|
|
var chunk = state.decoder.end();
|
|
if (chunk && chunk.length) _this.push(chunk);
|
|
}
|
|
|
|
_this.push(null);
|
|
});
|
|
|
|
stream.on('data', function (chunk) {
|
|
debug('wrapped data');
|
|
if (state.decoder) chunk = state.decoder.write(chunk);
|
|
|
|
// don't skip over falsy values in objectMode
|
|
if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
|
|
|
|
var ret = _this.push(chunk);
|
|
if (!ret) {
|
|
paused = true;
|
|
stream.pause();
|
|
}
|
|
});
|
|
|
|
// proxy all the other methods.
|
|
// important when wrapping filters and duplexes.
|
|
for (var i in stream) {
|
|
if (this[i] === undefined && typeof stream[i] === 'function') {
|
|
this[i] = function (method) {
|
|
return function () {
|
|
return stream[method].apply(stream, arguments);
|
|
};
|
|
}(i);
|
|
}
|
|
}
|
|
|
|
// proxy certain important events.
|
|
for (var n = 0; n < kProxyEvents.length; n++) {
|
|
stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
|
|
}
|
|
|
|
// when we try to consume some more bytes, simply unpause the
|
|
// underlying stream.
|
|
this._read = function (n) {
|
|
debug('wrapped _read', n);
|
|
if (paused) {
|
|
paused = false;
|
|
stream.resume();
|
|
}
|
|
};
|
|
|
|
return this;
|
|
};
|
|
|
|
Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
|
|
// making it explicit this property is not enumerable
|
|
// because otherwise some prototype manipulation in
|
|
// userland will fail
|
|
enumerable: false,
|
|
get: function () {
|
|
return this._readableState.highWaterMark;
|
|
}
|
|
});
|
|
|
|
// exposed for testing purposes only.
|
|
Readable._fromList = fromList;
|
|
|
|
// Pluck off n bytes from an array of buffers.
|
|
// Length is the combined lengths of all the buffers in the list.
|
|
// This function is designed to be inlinable, so please take care when making
|
|
// changes to the function body.
|
|
function fromList(n, state) {
|
|
// nothing buffered
|
|
if (state.length === 0) return null;
|
|
|
|
var ret;
|
|
if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
|
|
// read it all, truncate the list
|
|
if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
|
|
state.buffer.clear();
|
|
} else {
|
|
// read part of list
|
|
ret = fromListPartial(n, state.buffer, state.decoder);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Extracts only enough buffered data to satisfy the amount requested.
|
|
// This function is designed to be inlinable, so please take care when making
|
|
// changes to the function body.
|
|
function fromListPartial(n, list, hasStrings) {
|
|
var ret;
|
|
if (n < list.head.data.length) {
|
|
// slice is the same for buffers and strings
|
|
ret = list.head.data.slice(0, n);
|
|
list.head.data = list.head.data.slice(n);
|
|
} else if (n === list.head.data.length) {
|
|
// first chunk is a perfect match
|
|
ret = list.shift();
|
|
} else {
|
|
// result spans more than one buffer
|
|
ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// Copies a specified amount of characters from the list of buffered data
|
|
// chunks.
|
|
// This function is designed to be inlinable, so please take care when making
|
|
// changes to the function body.
|
|
function copyFromBufferString(n, list) {
|
|
var p = list.head;
|
|
var c = 1;
|
|
var ret = p.data;
|
|
n -= ret.length;
|
|
while (p = p.next) {
|
|
var str = p.data;
|
|
var nb = n > str.length ? str.length : n;
|
|
if (nb === str.length) ret += str;else ret += str.slice(0, n);
|
|
n -= nb;
|
|
if (n === 0) {
|
|
if (nb === str.length) {
|
|
++c;
|
|
if (p.next) list.head = p.next;else list.head = list.tail = null;
|
|
} else {
|
|
list.head = p;
|
|
p.data = str.slice(nb);
|
|
}
|
|
break;
|
|
}
|
|
++c;
|
|
}
|
|
list.length -= c;
|
|
return ret;
|
|
}
|
|
|
|
// Copies a specified amount of bytes from the list of buffered data chunks.
|
|
// This function is designed to be inlinable, so please take care when making
|
|
// changes to the function body.
|
|
function copyFromBuffer(n, list) {
|
|
var ret = Buffer.allocUnsafe(n);
|
|
var p = list.head;
|
|
var c = 1;
|
|
p.data.copy(ret);
|
|
n -= p.data.length;
|
|
while (p = p.next) {
|
|
var buf = p.data;
|
|
var nb = n > buf.length ? buf.length : n;
|
|
buf.copy(ret, ret.length - n, 0, nb);
|
|
n -= nb;
|
|
if (n === 0) {
|
|
if (nb === buf.length) {
|
|
++c;
|
|
if (p.next) list.head = p.next;else list.head = list.tail = null;
|
|
} else {
|
|
list.head = p;
|
|
p.data = buf.slice(nb);
|
|
}
|
|
break;
|
|
}
|
|
++c;
|
|
}
|
|
list.length -= c;
|
|
return ret;
|
|
}
|
|
|
|
function endReadable(stream) {
|
|
var state = stream._readableState;
|
|
|
|
// If we get here before consuming all the bytes, then that is a
|
|
// bug in node. Should never happen.
|
|
if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
|
|
|
|
if (!state.endEmitted) {
|
|
state.ended = true;
|
|
pna.nextTick(endReadableNT, state, stream);
|
|
}
|
|
}
|
|
|
|
function endReadableNT(state, stream) {
|
|
// Check that we didn't get one last unshift.
|
|
if (!state.endEmitted && state.length === 0) {
|
|
state.endEmitted = true;
|
|
stream.readable = false;
|
|
stream.emit('end');
|
|
}
|
|
}
|
|
|
|
function indexOf(xs, x) {
|
|
for (var i = 0, l = xs.length; i < l; i++) {
|
|
if (xs[i] === x) return i;
|
|
}
|
|
return -1;
|
|
}
|
|
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{"./_stream_duplex":13,"./internal/streams/BufferList":18,"./internal/streams/destroy":19,"./internal/streams/stream":20,"_process":30,"core-util-is":9,"events":28,"inherits":10,"isarray":11,"process-nextick-args":12,"safe-buffer":22,"string_decoder/":23,"util":26}],16:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
// a transform stream is a readable/writable stream where you do
|
|
// something with the data. Sometimes it's called a "filter",
|
|
// but that's not a great name for it, since that implies a thing where
|
|
// some bits pass through, and others are simply ignored. (That would
|
|
// be a valid example of a transform, of course.)
|
|
//
|
|
// While the output is causally related to the input, it's not a
|
|
// necessarily symmetric or synchronous transformation. For example,
|
|
// a zlib stream might take multiple plain-text writes(), and then
|
|
// emit a single compressed chunk some time in the future.
|
|
//
|
|
// Here's how this works:
|
|
//
|
|
// The Transform stream has all the aspects of the readable and writable
|
|
// stream classes. When you write(chunk), that calls _write(chunk,cb)
|
|
// internally, and returns false if there's a lot of pending writes
|
|
// buffered up. When you call read(), that calls _read(n) until
|
|
// there's enough pending readable data buffered up.
|
|
//
|
|
// In a transform stream, the written data is placed in a buffer. When
|
|
// _read(n) is called, it transforms the queued up data, calling the
|
|
// buffered _write cb's as it consumes chunks. If consuming a single
|
|
// written chunk would result in multiple output chunks, then the first
|
|
// outputted bit calls the readcb, and subsequent chunks just go into
|
|
// the read buffer, and will cause it to emit 'readable' if necessary.
|
|
//
|
|
// This way, back-pressure is actually determined by the reading side,
|
|
// since _read has to be called to start processing a new chunk. However,
|
|
// a pathological inflate type of transform can cause excessive buffering
|
|
// here. For example, imagine a stream where every byte of input is
|
|
// interpreted as an integer from 0-255, and then results in that many
|
|
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
|
|
// 1kb of data being output. In this case, you could write a very small
|
|
// amount of input, and end up with a very large amount of output. In
|
|
// such a pathological inflating mechanism, there'd be no way to tell
|
|
// the system to stop doing the transform. A single 4MB write could
|
|
// cause the system to run out of memory.
|
|
//
|
|
// However, even in such a pathological case, only a single written chunk
|
|
// would be consumed, and then the rest would wait (un-transformed) until
|
|
// the results of the previous transformed chunk were consumed.
|
|
|
|
'use strict';
|
|
|
|
module.exports = Transform;
|
|
|
|
var Duplex = require('./_stream_duplex');
|
|
|
|
/*<replacement>*/
|
|
var util = Object.create(require('core-util-is'));
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
util.inherits(Transform, Duplex);
|
|
|
|
function afterTransform(er, data) {
|
|
var ts = this._transformState;
|
|
ts.transforming = false;
|
|
|
|
var cb = ts.writecb;
|
|
|
|
if (!cb) {
|
|
return this.emit('error', new Error('write callback called multiple times'));
|
|
}
|
|
|
|
ts.writechunk = null;
|
|
ts.writecb = null;
|
|
|
|
if (data != null) // single equals check for both `null` and `undefined`
|
|
this.push(data);
|
|
|
|
cb(er);
|
|
|
|
var rs = this._readableState;
|
|
rs.reading = false;
|
|
if (rs.needReadable || rs.length < rs.highWaterMark) {
|
|
this._read(rs.highWaterMark);
|
|
}
|
|
}
|
|
|
|
function Transform(options) {
|
|
if (!(this instanceof Transform)) return new Transform(options);
|
|
|
|
Duplex.call(this, options);
|
|
|
|
this._transformState = {
|
|
afterTransform: afterTransform.bind(this),
|
|
needTransform: false,
|
|
transforming: false,
|
|
writecb: null,
|
|
writechunk: null,
|
|
writeencoding: null
|
|
};
|
|
|
|
// start out asking for a readable event once data is transformed.
|
|
this._readableState.needReadable = true;
|
|
|
|
// we have implemented the _read method, and done the other things
|
|
// that Readable wants before the first _read call, so unset the
|
|
// sync guard flag.
|
|
this._readableState.sync = false;
|
|
|
|
if (options) {
|
|
if (typeof options.transform === 'function') this._transform = options.transform;
|
|
|
|
if (typeof options.flush === 'function') this._flush = options.flush;
|
|
}
|
|
|
|
// When the writable side finishes, then flush out anything remaining.
|
|
this.on('prefinish', prefinish);
|
|
}
|
|
|
|
function prefinish() {
|
|
var _this = this;
|
|
|
|
if (typeof this._flush === 'function') {
|
|
this._flush(function (er, data) {
|
|
done(_this, er, data);
|
|
});
|
|
} else {
|
|
done(this, null, null);
|
|
}
|
|
}
|
|
|
|
Transform.prototype.push = function (chunk, encoding) {
|
|
this._transformState.needTransform = false;
|
|
return Duplex.prototype.push.call(this, chunk, encoding);
|
|
};
|
|
|
|
// This is the part where you do stuff!
|
|
// override this function in implementation classes.
|
|
// 'chunk' is an input chunk.
|
|
//
|
|
// Call `push(newChunk)` to pass along transformed output
|
|
// to the readable side. You may call 'push' zero or more times.
|
|
//
|
|
// Call `cb(err)` when you are done with this chunk. If you pass
|
|
// an error, then that'll put the hurt on the whole operation. If you
|
|
// never call cb(), then you'll never get another chunk.
|
|
Transform.prototype._transform = function (chunk, encoding, cb) {
|
|
throw new Error('_transform() is not implemented');
|
|
};
|
|
|
|
Transform.prototype._write = function (chunk, encoding, cb) {
|
|
var ts = this._transformState;
|
|
ts.writecb = cb;
|
|
ts.writechunk = chunk;
|
|
ts.writeencoding = encoding;
|
|
if (!ts.transforming) {
|
|
var rs = this._readableState;
|
|
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
|
|
}
|
|
};
|
|
|
|
// Doesn't matter what the args are here.
|
|
// _transform does all the work.
|
|
// That we got here means that the readable side wants more data.
|
|
Transform.prototype._read = function (n) {
|
|
var ts = this._transformState;
|
|
|
|
if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
|
|
ts.transforming = true;
|
|
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
|
|
} else {
|
|
// mark that we need a transform, so that any data that comes in
|
|
// will get processed, now that we've asked for it.
|
|
ts.needTransform = true;
|
|
}
|
|
};
|
|
|
|
Transform.prototype._destroy = function (err, cb) {
|
|
var _this2 = this;
|
|
|
|
Duplex.prototype._destroy.call(this, err, function (err2) {
|
|
cb(err2);
|
|
_this2.emit('close');
|
|
});
|
|
};
|
|
|
|
function done(stream, er, data) {
|
|
if (er) return stream.emit('error', er);
|
|
|
|
if (data != null) // single equals check for both `null` and `undefined`
|
|
stream.push(data);
|
|
|
|
// if there's nothing in the write buffer, then that means
|
|
// that nothing more will ever be provided
|
|
if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');
|
|
|
|
if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');
|
|
|
|
return stream.push(null);
|
|
}
|
|
},{"./_stream_duplex":13,"core-util-is":9,"inherits":10}],17:[function(require,module,exports){
|
|
(function (process,global,setImmediate){(function (){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
// A bit simpler than readable streams.
|
|
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
|
|
// the drain event emission and buffering.
|
|
|
|
'use strict';
|
|
|
|
/*<replacement>*/
|
|
|
|
var pna = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
module.exports = Writable;
|
|
|
|
/* <replacement> */
|
|
function WriteReq(chunk, encoding, cb) {
|
|
this.chunk = chunk;
|
|
this.encoding = encoding;
|
|
this.callback = cb;
|
|
this.next = null;
|
|
}
|
|
|
|
// It seems a linked list but it is not
|
|
// there will be only 2 of these for each stream
|
|
function CorkedRequest(state) {
|
|
var _this = this;
|
|
|
|
this.next = null;
|
|
this.entry = null;
|
|
this.finish = function () {
|
|
onCorkedFinish(_this, state);
|
|
};
|
|
}
|
|
/* </replacement> */
|
|
|
|
/*<replacement>*/
|
|
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var Duplex;
|
|
/*</replacement>*/
|
|
|
|
Writable.WritableState = WritableState;
|
|
|
|
/*<replacement>*/
|
|
var util = Object.create(require('core-util-is'));
|
|
util.inherits = require('inherits');
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var internalUtil = {
|
|
deprecate: require('util-deprecate')
|
|
};
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
var Stream = require('./internal/streams/stream');
|
|
/*</replacement>*/
|
|
|
|
/*<replacement>*/
|
|
|
|
var Buffer = require('safe-buffer').Buffer;
|
|
var OurUint8Array = global.Uint8Array || function () {};
|
|
function _uint8ArrayToBuffer(chunk) {
|
|
return Buffer.from(chunk);
|
|
}
|
|
function _isUint8Array(obj) {
|
|
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
|
|
}
|
|
|
|
/*</replacement>*/
|
|
|
|
var destroyImpl = require('./internal/streams/destroy');
|
|
|
|
util.inherits(Writable, Stream);
|
|
|
|
function nop() {}
|
|
|
|
function WritableState(options, stream) {
|
|
Duplex = Duplex || require('./_stream_duplex');
|
|
|
|
options = options || {};
|
|
|
|
// Duplex streams are both readable and writable, but share
|
|
// the same options object.
|
|
// However, some cases require setting options to different
|
|
// values for the readable and the writable sides of the duplex stream.
|
|
// These options can be provided separately as readableXXX and writableXXX.
|
|
var isDuplex = stream instanceof Duplex;
|
|
|
|
// object stream flag to indicate whether or not this stream
|
|
// contains buffers or objects.
|
|
this.objectMode = !!options.objectMode;
|
|
|
|
if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
|
|
|
|
// the point at which write() starts returning false
|
|
// Note: 0 is a valid value, means that we always return false if
|
|
// the entire buffer is not flushed immediately on write()
|
|
var hwm = options.highWaterMark;
|
|
var writableHwm = options.writableHighWaterMark;
|
|
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
|
|
|
|
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;
|
|
|
|
// cast to ints.
|
|
this.highWaterMark = Math.floor(this.highWaterMark);
|
|
|
|
// if _final has been called
|
|
this.finalCalled = false;
|
|
|
|
// drain event flag.
|
|
this.needDrain = false;
|
|
// at the start of calling end()
|
|
this.ending = false;
|
|
// when end() has been called, and returned
|
|
this.ended = false;
|
|
// when 'finish' is emitted
|
|
this.finished = false;
|
|
|
|
// has it been destroyed
|
|
this.destroyed = false;
|
|
|
|
// should we decode strings into buffers before passing to _write?
|
|
// this is here so that some node-core streams can optimize string
|
|
// handling at a lower level.
|
|
var noDecode = options.decodeStrings === false;
|
|
this.decodeStrings = !noDecode;
|
|
|
|
// Crypto is kind of old and crusty. Historically, its default string
|
|
// encoding is 'binary' so we have to make this configurable.
|
|
// Everything else in the universe uses 'utf8', though.
|
|
this.defaultEncoding = options.defaultEncoding || 'utf8';
|
|
|
|
// not an actual buffer we keep track of, but a measurement
|
|
// of how much we're waiting to get pushed to some underlying
|
|
// socket or file.
|
|
this.length = 0;
|
|
|
|
// a flag to see when we're in the middle of a write.
|
|
this.writing = false;
|
|
|
|
// when true all writes will be buffered until .uncork() call
|
|
this.corked = 0;
|
|
|
|
// a flag to be able to tell if the onwrite cb is called immediately,
|
|
// or on a later tick. We set this to true at first, because any
|
|
// actions that shouldn't happen until "later" should generally also
|
|
// not happen before the first write call.
|
|
this.sync = true;
|
|
|
|
// a flag to know if we're processing previously buffered items, which
|
|
// may call the _write() callback in the same tick, so that we don't
|
|
// end up in an overlapped onwrite situation.
|
|
this.bufferProcessing = false;
|
|
|
|
// the callback that's passed to _write(chunk,cb)
|
|
this.onwrite = function (er) {
|
|
onwrite(stream, er);
|
|
};
|
|
|
|
// the callback that the user supplies to write(chunk,encoding,cb)
|
|
this.writecb = null;
|
|
|
|
// the amount that is being written when _write is called.
|
|
this.writelen = 0;
|
|
|
|
this.bufferedRequest = null;
|
|
this.lastBufferedRequest = null;
|
|
|
|
// number of pending user-supplied write callbacks
|
|
// this must be 0 before 'finish' can be emitted
|
|
this.pendingcb = 0;
|
|
|
|
// emit prefinish if the only thing we're waiting for is _write cbs
|
|
// This is relevant for synchronous Transform streams
|
|
this.prefinished = false;
|
|
|
|
// True if the error was already emitted and should not be thrown again
|
|
this.errorEmitted = false;
|
|
|
|
// count buffered requests
|
|
this.bufferedRequestCount = 0;
|
|
|
|
// allocate the first CorkedRequest, there is always
|
|
// one allocated and free to use, and we maintain at most two
|
|
this.corkedRequestsFree = new CorkedRequest(this);
|
|
}
|
|
|
|
WritableState.prototype.getBuffer = function getBuffer() {
|
|
var current = this.bufferedRequest;
|
|
var out = [];
|
|
while (current) {
|
|
out.push(current);
|
|
current = current.next;
|
|
}
|
|
return out;
|
|
};
|
|
|
|
(function () {
|
|
try {
|
|
Object.defineProperty(WritableState.prototype, 'buffer', {
|
|
get: internalUtil.deprecate(function () {
|
|
return this.getBuffer();
|
|
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
|
|
});
|
|
} catch (_) {}
|
|
})();
|
|
|
|
// Test _writableState for inheritance to account for Duplex streams,
|
|
// whose prototype chain only points to Readable.
|
|
var realHasInstance;
|
|
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
|
|
realHasInstance = Function.prototype[Symbol.hasInstance];
|
|
Object.defineProperty(Writable, Symbol.hasInstance, {
|
|
value: function (object) {
|
|
if (realHasInstance.call(this, object)) return true;
|
|
if (this !== Writable) return false;
|
|
|
|
return object && object._writableState instanceof WritableState;
|
|
}
|
|
});
|
|
} else {
|
|
realHasInstance = function (object) {
|
|
return object instanceof this;
|
|
};
|
|
}
|
|
|
|
function Writable(options) {
|
|
Duplex = Duplex || require('./_stream_duplex');
|
|
|
|
// Writable ctor is applied to Duplexes, too.
|
|
// `realHasInstance` is necessary because using plain `instanceof`
|
|
// would return false, as no `_writableState` property is attached.
|
|
|
|
// Trying to use the custom `instanceof` for Writable here will also break the
|
|
// Node.js LazyTransform implementation, which has a non-trivial getter for
|
|
// `_writableState` that would lead to infinite recursion.
|
|
if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
|
|
return new Writable(options);
|
|
}
|
|
|
|
this._writableState = new WritableState(options, this);
|
|
|
|
// legacy.
|
|
this.writable = true;
|
|
|
|
if (options) {
|
|
if (typeof options.write === 'function') this._write = options.write;
|
|
|
|
if (typeof options.writev === 'function') this._writev = options.writev;
|
|
|
|
if (typeof options.destroy === 'function') this._destroy = options.destroy;
|
|
|
|
if (typeof options.final === 'function') this._final = options.final;
|
|
}
|
|
|
|
Stream.call(this);
|
|
}
|
|
|
|
// Otherwise people can pipe Writable streams, which is just wrong.
|
|
Writable.prototype.pipe = function () {
|
|
this.emit('error', new Error('Cannot pipe, not readable'));
|
|
};
|
|
|
|
function writeAfterEnd(stream, cb) {
|
|
var er = new Error('write after end');
|
|
// TODO: defer error events consistently everywhere, not just the cb
|
|
stream.emit('error', er);
|
|
pna.nextTick(cb, er);
|
|
}
|
|
|
|
// Checks that a user-supplied chunk is valid, especially for the particular
|
|
// mode the stream is in. Currently this means that `null` is never accepted
|
|
// and undefined/non-string values are only allowed in object mode.
|
|
function validChunk(stream, state, chunk, cb) {
|
|
var valid = true;
|
|
var er = false;
|
|
|
|
if (chunk === null) {
|
|
er = new TypeError('May not write null values to stream');
|
|
} else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
|
|
er = new TypeError('Invalid non-string/buffer chunk');
|
|
}
|
|
if (er) {
|
|
stream.emit('error', er);
|
|
pna.nextTick(cb, er);
|
|
valid = false;
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
Writable.prototype.write = function (chunk, encoding, cb) {
|
|
var state = this._writableState;
|
|
var ret = false;
|
|
var isBuf = !state.objectMode && _isUint8Array(chunk);
|
|
|
|
if (isBuf && !Buffer.isBuffer(chunk)) {
|
|
chunk = _uint8ArrayToBuffer(chunk);
|
|
}
|
|
|
|
if (typeof encoding === 'function') {
|
|
cb = encoding;
|
|
encoding = null;
|
|
}
|
|
|
|
if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
|
|
|
|
if (typeof cb !== 'function') cb = nop;
|
|
|
|
if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
|
|
state.pendingcb++;
|
|
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
|
|
}
|
|
|
|
return ret;
|
|
};
|
|
|
|
Writable.prototype.cork = function () {
|
|
var state = this._writableState;
|
|
|
|
state.corked++;
|
|
};
|
|
|
|
Writable.prototype.uncork = function () {
|
|
var state = this._writableState;
|
|
|
|
if (state.corked) {
|
|
state.corked--;
|
|
|
|
if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
|
|
}
|
|
};
|
|
|
|
Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
|
|
// node::ParseEncoding() requires lower case.
|
|
if (typeof encoding === 'string') encoding = encoding.toLowerCase();
|
|
if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
|
|
this._writableState.defaultEncoding = encoding;
|
|
return this;
|
|
};
|
|
|
|
function decodeChunk(state, chunk, encoding) {
|
|
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
|
|
chunk = Buffer.from(chunk, encoding);
|
|
}
|
|
return chunk;
|
|
}
|
|
|
|
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
|
|
// making it explicit this property is not enumerable
|
|
// because otherwise some prototype manipulation in
|
|
// userland will fail
|
|
enumerable: false,
|
|
get: function () {
|
|
return this._writableState.highWaterMark;
|
|
}
|
|
});
|
|
|
|
// if we're already writing something, then just put this
|
|
// in the queue, and wait our turn. Otherwise, call _write
|
|
// If we return false, then we need a drain event, so set that flag.
|
|
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
|
|
if (!isBuf) {
|
|
var newChunk = decodeChunk(state, chunk, encoding);
|
|
if (chunk !== newChunk) {
|
|
isBuf = true;
|
|
encoding = 'buffer';
|
|
chunk = newChunk;
|
|
}
|
|
}
|
|
var len = state.objectMode ? 1 : chunk.length;
|
|
|
|
state.length += len;
|
|
|
|
var ret = state.length < state.highWaterMark;
|
|
// we must ensure that previous needDrain will not be reset to false.
|
|
if (!ret) state.needDrain = true;
|
|
|
|
if (state.writing || state.corked) {
|
|
var last = state.lastBufferedRequest;
|
|
state.lastBufferedRequest = {
|
|
chunk: chunk,
|
|
encoding: encoding,
|
|
isBuf: isBuf,
|
|
callback: cb,
|
|
next: null
|
|
};
|
|
if (last) {
|
|
last.next = state.lastBufferedRequest;
|
|
} else {
|
|
state.bufferedRequest = state.lastBufferedRequest;
|
|
}
|
|
state.bufferedRequestCount += 1;
|
|
} else {
|
|
doWrite(stream, state, false, len, chunk, encoding, cb);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
function doWrite(stream, state, writev, len, chunk, encoding, cb) {
|
|
state.writelen = len;
|
|
state.writecb = cb;
|
|
state.writing = true;
|
|
state.sync = true;
|
|
if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
|
|
state.sync = false;
|
|
}
|
|
|
|
function onwriteError(stream, state, sync, er, cb) {
|
|
--state.pendingcb;
|
|
|
|
if (sync) {
|
|
// defer the callback if we are being called synchronously
|
|
// to avoid piling up things on the stack
|
|
pna.nextTick(cb, er);
|
|
// this can emit finish, and it will always happen
|
|
// after error
|
|
pna.nextTick(finishMaybe, stream, state);
|
|
stream._writableState.errorEmitted = true;
|
|
stream.emit('error', er);
|
|
} else {
|
|
// the caller expect this to happen before if
|
|
// it is async
|
|
cb(er);
|
|
stream._writableState.errorEmitted = true;
|
|
stream.emit('error', er);
|
|
// this can emit finish, but finish must
|
|
// always follow error
|
|
finishMaybe(stream, state);
|
|
}
|
|
}
|
|
|
|
function onwriteStateUpdate(state) {
|
|
state.writing = false;
|
|
state.writecb = null;
|
|
state.length -= state.writelen;
|
|
state.writelen = 0;
|
|
}
|
|
|
|
function onwrite(stream, er) {
|
|
var state = stream._writableState;
|
|
var sync = state.sync;
|
|
var cb = state.writecb;
|
|
|
|
onwriteStateUpdate(state);
|
|
|
|
if (er) onwriteError(stream, state, sync, er, cb);else {
|
|
// Check if we're actually ready to finish, but don't emit yet
|
|
var finished = needFinish(state);
|
|
|
|
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
|
|
clearBuffer(stream, state);
|
|
}
|
|
|
|
if (sync) {
|
|
/*<replacement>*/
|
|
asyncWrite(afterWrite, stream, state, finished, cb);
|
|
/*</replacement>*/
|
|
} else {
|
|
afterWrite(stream, state, finished, cb);
|
|
}
|
|
}
|
|
}
|
|
|
|
function afterWrite(stream, state, finished, cb) {
|
|
if (!finished) onwriteDrain(stream, state);
|
|
state.pendingcb--;
|
|
cb();
|
|
finishMaybe(stream, state);
|
|
}
|
|
|
|
// Must force callback to be called on nextTick, so that we don't
|
|
// emit 'drain' before the write() consumer gets the 'false' return
|
|
// value, and has a chance to attach a 'drain' listener.
|
|
function onwriteDrain(stream, state) {
|
|
if (state.length === 0 && state.needDrain) {
|
|
state.needDrain = false;
|
|
stream.emit('drain');
|
|
}
|
|
}
|
|
|
|
// if there's something in the buffer waiting, then process it
|
|
function clearBuffer(stream, state) {
|
|
state.bufferProcessing = true;
|
|
var entry = state.bufferedRequest;
|
|
|
|
if (stream._writev && entry && entry.next) {
|
|
// Fast case, write everything using _writev()
|
|
var l = state.bufferedRequestCount;
|
|
var buffer = new Array(l);
|
|
var holder = state.corkedRequestsFree;
|
|
holder.entry = entry;
|
|
|
|
var count = 0;
|
|
var allBuffers = true;
|
|
while (entry) {
|
|
buffer[count] = entry;
|
|
if (!entry.isBuf) allBuffers = false;
|
|
entry = entry.next;
|
|
count += 1;
|
|
}
|
|
buffer.allBuffers = allBuffers;
|
|
|
|
doWrite(stream, state, true, state.length, buffer, '', holder.finish);
|
|
|
|
// doWrite is almost always async, defer these to save a bit of time
|
|
// as the hot path ends with doWrite
|
|
state.pendingcb++;
|
|
state.lastBufferedRequest = null;
|
|
if (holder.next) {
|
|
state.corkedRequestsFree = holder.next;
|
|
holder.next = null;
|
|
} else {
|
|
state.corkedRequestsFree = new CorkedRequest(state);
|
|
}
|
|
state.bufferedRequestCount = 0;
|
|
} else {
|
|
// Slow case, write chunks one-by-one
|
|
while (entry) {
|
|
var chunk = entry.chunk;
|
|
var encoding = entry.encoding;
|
|
var cb = entry.callback;
|
|
var len = state.objectMode ? 1 : chunk.length;
|
|
|
|
doWrite(stream, state, false, len, chunk, encoding, cb);
|
|
entry = entry.next;
|
|
state.bufferedRequestCount--;
|
|
// if we didn't call the onwrite immediately, then
|
|
// it means that we need to wait until it does.
|
|
// also, that means that the chunk and cb are currently
|
|
// being processed, so move the buffer counter past them.
|
|
if (state.writing) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (entry === null) state.lastBufferedRequest = null;
|
|
}
|
|
|
|
state.bufferedRequest = entry;
|
|
state.bufferProcessing = false;
|
|
}
|
|
|
|
Writable.prototype._write = function (chunk, encoding, cb) {
|
|
cb(new Error('_write() is not implemented'));
|
|
};
|
|
|
|
Writable.prototype._writev = null;
|
|
|
|
Writable.prototype.end = function (chunk, encoding, cb) {
|
|
var state = this._writableState;
|
|
|
|
if (typeof chunk === 'function') {
|
|
cb = chunk;
|
|
chunk = null;
|
|
encoding = null;
|
|
} else if (typeof encoding === 'function') {
|
|
cb = encoding;
|
|
encoding = null;
|
|
}
|
|
|
|
if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
|
|
|
|
// .end() fully uncorks
|
|
if (state.corked) {
|
|
state.corked = 1;
|
|
this.uncork();
|
|
}
|
|
|
|
// ignore unnecessary end() calls.
|
|
if (!state.ending && !state.finished) endWritable(this, state, cb);
|
|
};
|
|
|
|
function needFinish(state) {
|
|
return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
|
|
}
|
|
function callFinal(stream, state) {
|
|
stream._final(function (err) {
|
|
state.pendingcb--;
|
|
if (err) {
|
|
stream.emit('error', err);
|
|
}
|
|
state.prefinished = true;
|
|
stream.emit('prefinish');
|
|
finishMaybe(stream, state);
|
|
});
|
|
}
|
|
function prefinish(stream, state) {
|
|
if (!state.prefinished && !state.finalCalled) {
|
|
if (typeof stream._final === 'function') {
|
|
state.pendingcb++;
|
|
state.finalCalled = true;
|
|
pna.nextTick(callFinal, stream, state);
|
|
} else {
|
|
state.prefinished = true;
|
|
stream.emit('prefinish');
|
|
}
|
|
}
|
|
}
|
|
|
|
function finishMaybe(stream, state) {
|
|
var need = needFinish(state);
|
|
if (need) {
|
|
prefinish(stream, state);
|
|
if (state.pendingcb === 0) {
|
|
state.finished = true;
|
|
stream.emit('finish');
|
|
}
|
|
}
|
|
return need;
|
|
}
|
|
|
|
function endWritable(stream, state, cb) {
|
|
state.ending = true;
|
|
finishMaybe(stream, state);
|
|
if (cb) {
|
|
if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
|
|
}
|
|
state.ended = true;
|
|
stream.writable = false;
|
|
}
|
|
|
|
function onCorkedFinish(corkReq, state, err) {
|
|
var entry = corkReq.entry;
|
|
corkReq.entry = null;
|
|
while (entry) {
|
|
var cb = entry.callback;
|
|
state.pendingcb--;
|
|
cb(err);
|
|
entry = entry.next;
|
|
}
|
|
if (state.corkedRequestsFree) {
|
|
state.corkedRequestsFree.next = corkReq;
|
|
} else {
|
|
state.corkedRequestsFree = corkReq;
|
|
}
|
|
}
|
|
|
|
Object.defineProperty(Writable.prototype, 'destroyed', {
|
|
get: function () {
|
|
if (this._writableState === undefined) {
|
|
return false;
|
|
}
|
|
return this._writableState.destroyed;
|
|
},
|
|
set: function (value) {
|
|
// we ignore the value if the stream
|
|
// has not been initialized yet
|
|
if (!this._writableState) {
|
|
return;
|
|
}
|
|
|
|
// backward compatibility, the user is explicitly
|
|
// managing destroyed
|
|
this._writableState.destroyed = value;
|
|
}
|
|
});
|
|
|
|
Writable.prototype.destroy = destroyImpl.destroy;
|
|
Writable.prototype._undestroy = destroyImpl.undestroy;
|
|
Writable.prototype._destroy = function (err, cb) {
|
|
this.end();
|
|
cb(err);
|
|
};
|
|
}).call(this)}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
|
|
},{"./_stream_duplex":13,"./internal/streams/destroy":19,"./internal/streams/stream":20,"_process":30,"core-util-is":9,"inherits":10,"process-nextick-args":12,"safe-buffer":22,"timers":31,"util-deprecate":24}],18:[function(require,module,exports){
|
|
'use strict';
|
|
|
|
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
|
|
|
|
var Buffer = require('safe-buffer').Buffer;
|
|
var util = require('util');
|
|
|
|
function copyBuffer(src, target, offset) {
|
|
src.copy(target, offset);
|
|
}
|
|
|
|
module.exports = function () {
|
|
function BufferList() {
|
|
_classCallCheck(this, BufferList);
|
|
|
|
this.head = null;
|
|
this.tail = null;
|
|
this.length = 0;
|
|
}
|
|
|
|
BufferList.prototype.push = function push(v) {
|
|
var entry = { data: v, next: null };
|
|
if (this.length > 0) this.tail.next = entry;else this.head = entry;
|
|
this.tail = entry;
|
|
++this.length;
|
|
};
|
|
|
|
BufferList.prototype.unshift = function unshift(v) {
|
|
var entry = { data: v, next: this.head };
|
|
if (this.length === 0) this.tail = entry;
|
|
this.head = entry;
|
|
++this.length;
|
|
};
|
|
|
|
BufferList.prototype.shift = function shift() {
|
|
if (this.length === 0) return;
|
|
var ret = this.head.data;
|
|
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
|
|
--this.length;
|
|
return ret;
|
|
};
|
|
|
|
BufferList.prototype.clear = function clear() {
|
|
this.head = this.tail = null;
|
|
this.length = 0;
|
|
};
|
|
|
|
BufferList.prototype.join = function join(s) {
|
|
if (this.length === 0) return '';
|
|
var p = this.head;
|
|
var ret = '' + p.data;
|
|
while (p = p.next) {
|
|
ret += s + p.data;
|
|
}return ret;
|
|
};
|
|
|
|
BufferList.prototype.concat = function concat(n) {
|
|
if (this.length === 0) return Buffer.alloc(0);
|
|
if (this.length === 1) return this.head.data;
|
|
var ret = Buffer.allocUnsafe(n >>> 0);
|
|
var p = this.head;
|
|
var i = 0;
|
|
while (p) {
|
|
copyBuffer(p.data, ret, i);
|
|
i += p.data.length;
|
|
p = p.next;
|
|
}
|
|
return ret;
|
|
};
|
|
|
|
return BufferList;
|
|
}();
|
|
|
|
if (util && util.inspect && util.inspect.custom) {
|
|
module.exports.prototype[util.inspect.custom] = function () {
|
|
var obj = util.inspect({ length: this.length });
|
|
return this.constructor.name + ' ' + obj;
|
|
};
|
|
}
|
|
},{"safe-buffer":22,"util":26}],19:[function(require,module,exports){
|
|
'use strict';
|
|
|
|
/*<replacement>*/
|
|
|
|
var pna = require('process-nextick-args');
|
|
/*</replacement>*/
|
|
|
|
// undocumented cb() API, needed for core, not for public API
|
|
function destroy(err, cb) {
|
|
var _this = this;
|
|
|
|
var readableDestroyed = this._readableState && this._readableState.destroyed;
|
|
var writableDestroyed = this._writableState && this._writableState.destroyed;
|
|
|
|
if (readableDestroyed || writableDestroyed) {
|
|
if (cb) {
|
|
cb(err);
|
|
} else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
|
|
pna.nextTick(emitErrorNT, this, err);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
// we set destroyed to true before firing error callbacks in order
|
|
// to make it re-entrance safe in case destroy() is called within callbacks
|
|
|
|
if (this._readableState) {
|
|
this._readableState.destroyed = true;
|
|
}
|
|
|
|
// if this is a duplex stream mark the writable part as destroyed as well
|
|
if (this._writableState) {
|
|
this._writableState.destroyed = true;
|
|
}
|
|
|
|
this._destroy(err || null, function (err) {
|
|
if (!cb && err) {
|
|
pna.nextTick(emitErrorNT, _this, err);
|
|
if (_this._writableState) {
|
|
_this._writableState.errorEmitted = true;
|
|
}
|
|
} else if (cb) {
|
|
cb(err);
|
|
}
|
|
});
|
|
|
|
return this;
|
|
}
|
|
|
|
function undestroy() {
|
|
if (this._readableState) {
|
|
this._readableState.destroyed = false;
|
|
this._readableState.reading = false;
|
|
this._readableState.ended = false;
|
|
this._readableState.endEmitted = false;
|
|
}
|
|
|
|
if (this._writableState) {
|
|
this._writableState.destroyed = false;
|
|
this._writableState.ended = false;
|
|
this._writableState.ending = false;
|
|
this._writableState.finished = false;
|
|
this._writableState.errorEmitted = false;
|
|
}
|
|
}
|
|
|
|
function emitErrorNT(self, err) {
|
|
self.emit('error', err);
|
|
}
|
|
|
|
module.exports = {
|
|
destroy: destroy,
|
|
undestroy: undestroy
|
|
};
|
|
},{"process-nextick-args":12}],20:[function(require,module,exports){
|
|
module.exports = require('events').EventEmitter;
|
|
|
|
},{"events":28}],21:[function(require,module,exports){
|
|
exports = module.exports = require('./lib/_stream_readable.js');
|
|
exports.Stream = exports;
|
|
exports.Readable = exports;
|
|
exports.Writable = require('./lib/_stream_writable.js');
|
|
exports.Duplex = require('./lib/_stream_duplex.js');
|
|
exports.Transform = require('./lib/_stream_transform.js');
|
|
exports.PassThrough = require('./lib/_stream_passthrough.js');
|
|
|
|
},{"./lib/_stream_duplex.js":13,"./lib/_stream_passthrough.js":14,"./lib/_stream_readable.js":15,"./lib/_stream_transform.js":16,"./lib/_stream_writable.js":17}],22:[function(require,module,exports){
|
|
/* eslint-disable node/no-deprecated-api */
|
|
var buffer = require('buffer')
|
|
var Buffer = buffer.Buffer
|
|
|
|
// alternative to using Object.keys for old browsers
|
|
function copyProps (src, dst) {
|
|
for (var key in src) {
|
|
dst[key] = src[key]
|
|
}
|
|
}
|
|
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
|
|
module.exports = buffer
|
|
} else {
|
|
// Copy properties from require('buffer')
|
|
copyProps(buffer, exports)
|
|
exports.Buffer = SafeBuffer
|
|
}
|
|
|
|
function SafeBuffer (arg, encodingOrOffset, length) {
|
|
return Buffer(arg, encodingOrOffset, length)
|
|
}
|
|
|
|
// Copy static methods from Buffer
|
|
copyProps(Buffer, SafeBuffer)
|
|
|
|
SafeBuffer.from = function (arg, encodingOrOffset, length) {
|
|
if (typeof arg === 'number') {
|
|
throw new TypeError('Argument must not be a number')
|
|
}
|
|
return Buffer(arg, encodingOrOffset, length)
|
|
}
|
|
|
|
SafeBuffer.alloc = function (size, fill, encoding) {
|
|
if (typeof size !== 'number') {
|
|
throw new TypeError('Argument must be a number')
|
|
}
|
|
var buf = Buffer(size)
|
|
if (fill !== undefined) {
|
|
if (typeof encoding === 'string') {
|
|
buf.fill(fill, encoding)
|
|
} else {
|
|
buf.fill(fill)
|
|
}
|
|
} else {
|
|
buf.fill(0)
|
|
}
|
|
return buf
|
|
}
|
|
|
|
SafeBuffer.allocUnsafe = function (size) {
|
|
if (typeof size !== 'number') {
|
|
throw new TypeError('Argument must be a number')
|
|
}
|
|
return Buffer(size)
|
|
}
|
|
|
|
SafeBuffer.allocUnsafeSlow = function (size) {
|
|
if (typeof size !== 'number') {
|
|
throw new TypeError('Argument must be a number')
|
|
}
|
|
return buffer.SlowBuffer(size)
|
|
}
|
|
|
|
},{"buffer":27}],23:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
'use strict';
|
|
|
|
/*<replacement>*/
|
|
|
|
var Buffer = require('safe-buffer').Buffer;
|
|
/*</replacement>*/
|
|
|
|
var isEncoding = Buffer.isEncoding || function (encoding) {
|
|
encoding = '' + encoding;
|
|
switch (encoding && encoding.toLowerCase()) {
|
|
case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
};
|
|
|
|
function _normalizeEncoding(enc) {
|
|
if (!enc) return 'utf8';
|
|
var retried;
|
|
while (true) {
|
|
switch (enc) {
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return 'utf8';
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return 'utf16le';
|
|
case 'latin1':
|
|
case 'binary':
|
|
return 'latin1';
|
|
case 'base64':
|
|
case 'ascii':
|
|
case 'hex':
|
|
return enc;
|
|
default:
|
|
if (retried) return; // undefined
|
|
enc = ('' + enc).toLowerCase();
|
|
retried = true;
|
|
}
|
|
}
|
|
};
|
|
|
|
// Do not cache `Buffer.isEncoding` when checking encoding names as some
|
|
// modules monkey-patch it to support additional encodings
|
|
function normalizeEncoding(enc) {
|
|
var nenc = _normalizeEncoding(enc);
|
|
if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
|
|
return nenc || enc;
|
|
}
|
|
|
|
// StringDecoder provides an interface for efficiently splitting a series of
|
|
// buffers into a series of JS strings without breaking apart multi-byte
|
|
// characters.
|
|
exports.StringDecoder = StringDecoder;
|
|
function StringDecoder(encoding) {
|
|
this.encoding = normalizeEncoding(encoding);
|
|
var nb;
|
|
switch (this.encoding) {
|
|
case 'utf16le':
|
|
this.text = utf16Text;
|
|
this.end = utf16End;
|
|
nb = 4;
|
|
break;
|
|
case 'utf8':
|
|
this.fillLast = utf8FillLast;
|
|
nb = 4;
|
|
break;
|
|
case 'base64':
|
|
this.text = base64Text;
|
|
this.end = base64End;
|
|
nb = 3;
|
|
break;
|
|
default:
|
|
this.write = simpleWrite;
|
|
this.end = simpleEnd;
|
|
return;
|
|
}
|
|
this.lastNeed = 0;
|
|
this.lastTotal = 0;
|
|
this.lastChar = Buffer.allocUnsafe(nb);
|
|
}
|
|
|
|
StringDecoder.prototype.write = function (buf) {
|
|
if (buf.length === 0) return '';
|
|
var r;
|
|
var i;
|
|
if (this.lastNeed) {
|
|
r = this.fillLast(buf);
|
|
if (r === undefined) return '';
|
|
i = this.lastNeed;
|
|
this.lastNeed = 0;
|
|
} else {
|
|
i = 0;
|
|
}
|
|
if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
|
|
return r || '';
|
|
};
|
|
|
|
StringDecoder.prototype.end = utf8End;
|
|
|
|
// Returns only complete characters in a Buffer
|
|
StringDecoder.prototype.text = utf8Text;
|
|
|
|
// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
|
|
StringDecoder.prototype.fillLast = function (buf) {
|
|
if (this.lastNeed <= buf.length) {
|
|
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
|
|
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
|
|
}
|
|
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
|
|
this.lastNeed -= buf.length;
|
|
};
|
|
|
|
// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
|
|
// continuation byte. If an invalid byte is detected, -2 is returned.
|
|
function utf8CheckByte(byte) {
|
|
if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
|
|
return byte >> 6 === 0x02 ? -1 : -2;
|
|
}
|
|
|
|
// Checks at most 3 bytes at the end of a Buffer in order to detect an
|
|
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
|
|
// needed to complete the UTF-8 character (if applicable) are returned.
|
|
function utf8CheckIncomplete(self, buf, i) {
|
|
var j = buf.length - 1;
|
|
if (j < i) return 0;
|
|
var nb = utf8CheckByte(buf[j]);
|
|
if (nb >= 0) {
|
|
if (nb > 0) self.lastNeed = nb - 1;
|
|
return nb;
|
|
}
|
|
if (--j < i || nb === -2) return 0;
|
|
nb = utf8CheckByte(buf[j]);
|
|
if (nb >= 0) {
|
|
if (nb > 0) self.lastNeed = nb - 2;
|
|
return nb;
|
|
}
|
|
if (--j < i || nb === -2) return 0;
|
|
nb = utf8CheckByte(buf[j]);
|
|
if (nb >= 0) {
|
|
if (nb > 0) {
|
|
if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
|
|
}
|
|
return nb;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Validates as many continuation bytes for a multi-byte UTF-8 character as
|
|
// needed or are available. If we see a non-continuation byte where we expect
|
|
// one, we "replace" the validated continuation bytes we've seen so far with
|
|
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
|
|
// behavior. The continuation byte check is included three times in the case
|
|
// where all of the continuation bytes for a character exist in the same buffer.
|
|
// It is also done this way as a slight performance increase instead of using a
|
|
// loop.
|
|
function utf8CheckExtraBytes(self, buf, p) {
|
|
if ((buf[0] & 0xC0) !== 0x80) {
|
|
self.lastNeed = 0;
|
|
return '\ufffd';
|
|
}
|
|
if (self.lastNeed > 1 && buf.length > 1) {
|
|
if ((buf[1] & 0xC0) !== 0x80) {
|
|
self.lastNeed = 1;
|
|
return '\ufffd';
|
|
}
|
|
if (self.lastNeed > 2 && buf.length > 2) {
|
|
if ((buf[2] & 0xC0) !== 0x80) {
|
|
self.lastNeed = 2;
|
|
return '\ufffd';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
|
|
function utf8FillLast(buf) {
|
|
var p = this.lastTotal - this.lastNeed;
|
|
var r = utf8CheckExtraBytes(this, buf, p);
|
|
if (r !== undefined) return r;
|
|
if (this.lastNeed <= buf.length) {
|
|
buf.copy(this.lastChar, p, 0, this.lastNeed);
|
|
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
|
|
}
|
|
buf.copy(this.lastChar, p, 0, buf.length);
|
|
this.lastNeed -= buf.length;
|
|
}
|
|
|
|
// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
|
|
// partial character, the character's bytes are buffered until the required
|
|
// number of bytes are available.
|
|
function utf8Text(buf, i) {
|
|
var total = utf8CheckIncomplete(this, buf, i);
|
|
if (!this.lastNeed) return buf.toString('utf8', i);
|
|
this.lastTotal = total;
|
|
var end = buf.length - (total - this.lastNeed);
|
|
buf.copy(this.lastChar, 0, end);
|
|
return buf.toString('utf8', i, end);
|
|
}
|
|
|
|
// For UTF-8, a replacement character is added when ending on a partial
|
|
// character.
|
|
function utf8End(buf) {
|
|
var r = buf && buf.length ? this.write(buf) : '';
|
|
if (this.lastNeed) return r + '\ufffd';
|
|
return r;
|
|
}
|
|
|
|
// UTF-16LE typically needs two bytes per character, but even if we have an even
|
|
// number of bytes available, we need to check if we end on a leading/high
|
|
// surrogate. In that case, we need to wait for the next two bytes in order to
|
|
// decode the last character properly.
|
|
function utf16Text(buf, i) {
|
|
if ((buf.length - i) % 2 === 0) {
|
|
var r = buf.toString('utf16le', i);
|
|
if (r) {
|
|
var c = r.charCodeAt(r.length - 1);
|
|
if (c >= 0xD800 && c <= 0xDBFF) {
|
|
this.lastNeed = 2;
|
|
this.lastTotal = 4;
|
|
this.lastChar[0] = buf[buf.length - 2];
|
|
this.lastChar[1] = buf[buf.length - 1];
|
|
return r.slice(0, -1);
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
this.lastNeed = 1;
|
|
this.lastTotal = 2;
|
|
this.lastChar[0] = buf[buf.length - 1];
|
|
return buf.toString('utf16le', i, buf.length - 1);
|
|
}
|
|
|
|
// For UTF-16LE we do not explicitly append special replacement characters if we
|
|
// end on a partial character, we simply let v8 handle that.
|
|
function utf16End(buf) {
|
|
var r = buf && buf.length ? this.write(buf) : '';
|
|
if (this.lastNeed) {
|
|
var end = this.lastTotal - this.lastNeed;
|
|
return r + this.lastChar.toString('utf16le', 0, end);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
function base64Text(buf, i) {
|
|
var n = (buf.length - i) % 3;
|
|
if (n === 0) return buf.toString('base64', i);
|
|
this.lastNeed = 3 - n;
|
|
this.lastTotal = 3;
|
|
if (n === 1) {
|
|
this.lastChar[0] = buf[buf.length - 1];
|
|
} else {
|
|
this.lastChar[0] = buf[buf.length - 2];
|
|
this.lastChar[1] = buf[buf.length - 1];
|
|
}
|
|
return buf.toString('base64', i, buf.length - n);
|
|
}
|
|
|
|
function base64End(buf) {
|
|
var r = buf && buf.length ? this.write(buf) : '';
|
|
if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
|
|
return r;
|
|
}
|
|
|
|
// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
|
|
function simpleWrite(buf) {
|
|
return buf.toString(this.encoding);
|
|
}
|
|
|
|
function simpleEnd(buf) {
|
|
return buf && buf.length ? this.write(buf) : '';
|
|
}
|
|
},{"safe-buffer":22}],24:[function(require,module,exports){
|
|
(function (global){(function (){
|
|
|
|
/**
|
|
* Module exports.
|
|
*/
|
|
|
|
module.exports = deprecate;
|
|
|
|
/**
|
|
* Mark that a method should not be used.
|
|
* Returns a modified function which warns once by default.
|
|
*
|
|
* If `localStorage.noDeprecation = true` is set, then it is a no-op.
|
|
*
|
|
* If `localStorage.throwDeprecation = true` is set, then deprecated functions
|
|
* will throw an Error when invoked.
|
|
*
|
|
* If `localStorage.traceDeprecation = true` is set, then deprecated functions
|
|
* will invoke `console.trace()` instead of `console.error()`.
|
|
*
|
|
* @param {Function} fn - the function to deprecate
|
|
* @param {String} msg - the string to print to the console when `fn` is invoked
|
|
* @returns {Function} a new "deprecated" version of `fn`
|
|
* @api public
|
|
*/
|
|
|
|
function deprecate (fn, msg) {
|
|
if (config('noDeprecation')) {
|
|
return fn;
|
|
}
|
|
|
|
var warned = false;
|
|
function deprecated() {
|
|
if (!warned) {
|
|
if (config('throwDeprecation')) {
|
|
throw new Error(msg);
|
|
} else if (config('traceDeprecation')) {
|
|
console.trace(msg);
|
|
} else {
|
|
console.warn(msg);
|
|
}
|
|
warned = true;
|
|
}
|
|
return fn.apply(this, arguments);
|
|
}
|
|
|
|
return deprecated;
|
|
}
|
|
|
|
/**
|
|
* Checks `localStorage` for boolean values for the given `name`.
|
|
*
|
|
* @param {String} name
|
|
* @returns {Boolean}
|
|
* @api private
|
|
*/
|
|
|
|
function config (name) {
|
|
// accessing global.localStorage can trigger a DOMException in sandboxed iframes
|
|
try {
|
|
if (!global.localStorage) return false;
|
|
} catch (_) {
|
|
return false;
|
|
}
|
|
var val = global.localStorage[name];
|
|
if (null == val) return false;
|
|
return String(val).toLowerCase() === 'true';
|
|
}
|
|
|
|
}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{}],25:[function(require,module,exports){
|
|
'use strict'
|
|
|
|
exports.byteLength = byteLength
|
|
exports.toByteArray = toByteArray
|
|
exports.fromByteArray = fromByteArray
|
|
|
|
var lookup = []
|
|
var revLookup = []
|
|
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
|
|
|
|
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
|
|
for (var i = 0, len = code.length; i < len; ++i) {
|
|
lookup[i] = code[i]
|
|
revLookup[code.charCodeAt(i)] = i
|
|
}
|
|
|
|
// Support decoding URL-safe base64 strings, as Node.js does.
|
|
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
|
|
revLookup['-'.charCodeAt(0)] = 62
|
|
revLookup['_'.charCodeAt(0)] = 63
|
|
|
|
function getLens (b64) {
|
|
var len = b64.length
|
|
|
|
if (len % 4 > 0) {
|
|
throw new Error('Invalid string. Length must be a multiple of 4')
|
|
}
|
|
|
|
// Trim off extra bytes after placeholder bytes are found
|
|
// See: https://github.com/beatgammit/base64-js/issues/42
|
|
var validLen = b64.indexOf('=')
|
|
if (validLen === -1) validLen = len
|
|
|
|
var placeHoldersLen = validLen === len
|
|
? 0
|
|
: 4 - (validLen % 4)
|
|
|
|
return [validLen, placeHoldersLen]
|
|
}
|
|
|
|
// base64 is 4/3 + up to two characters of the original data
|
|
function byteLength (b64) {
|
|
var lens = getLens(b64)
|
|
var validLen = lens[0]
|
|
var placeHoldersLen = lens[1]
|
|
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
|
|
}
|
|
|
|
function _byteLength (b64, validLen, placeHoldersLen) {
|
|
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
|
|
}
|
|
|
|
function toByteArray (b64) {
|
|
var tmp
|
|
var lens = getLens(b64)
|
|
var validLen = lens[0]
|
|
var placeHoldersLen = lens[1]
|
|
|
|
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
|
|
|
|
var curByte = 0
|
|
|
|
// if there are placeholders, only get up to the last complete 4 chars
|
|
var len = placeHoldersLen > 0
|
|
? validLen - 4
|
|
: validLen
|
|
|
|
var i
|
|
for (i = 0; i < len; i += 4) {
|
|
tmp =
|
|
(revLookup[b64.charCodeAt(i)] << 18) |
|
|
(revLookup[b64.charCodeAt(i + 1)] << 12) |
|
|
(revLookup[b64.charCodeAt(i + 2)] << 6) |
|
|
revLookup[b64.charCodeAt(i + 3)]
|
|
arr[curByte++] = (tmp >> 16) & 0xFF
|
|
arr[curByte++] = (tmp >> 8) & 0xFF
|
|
arr[curByte++] = tmp & 0xFF
|
|
}
|
|
|
|
if (placeHoldersLen === 2) {
|
|
tmp =
|
|
(revLookup[b64.charCodeAt(i)] << 2) |
|
|
(revLookup[b64.charCodeAt(i + 1)] >> 4)
|
|
arr[curByte++] = tmp & 0xFF
|
|
}
|
|
|
|
if (placeHoldersLen === 1) {
|
|
tmp =
|
|
(revLookup[b64.charCodeAt(i)] << 10) |
|
|
(revLookup[b64.charCodeAt(i + 1)] << 4) |
|
|
(revLookup[b64.charCodeAt(i + 2)] >> 2)
|
|
arr[curByte++] = (tmp >> 8) & 0xFF
|
|
arr[curByte++] = tmp & 0xFF
|
|
}
|
|
|
|
return arr
|
|
}
|
|
|
|
function tripletToBase64 (num) {
|
|
return lookup[num >> 18 & 0x3F] +
|
|
lookup[num >> 12 & 0x3F] +
|
|
lookup[num >> 6 & 0x3F] +
|
|
lookup[num & 0x3F]
|
|
}
|
|
|
|
function encodeChunk (uint8, start, end) {
|
|
var tmp
|
|
var output = []
|
|
for (var i = start; i < end; i += 3) {
|
|
tmp =
|
|
((uint8[i] << 16) & 0xFF0000) +
|
|
((uint8[i + 1] << 8) & 0xFF00) +
|
|
(uint8[i + 2] & 0xFF)
|
|
output.push(tripletToBase64(tmp))
|
|
}
|
|
return output.join('')
|
|
}
|
|
|
|
function fromByteArray (uint8) {
|
|
var tmp
|
|
var len = uint8.length
|
|
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
|
|
var parts = []
|
|
var maxChunkLength = 16383 // must be multiple of 3
|
|
|
|
// go through the array every three bytes, we'll deal with trailing stuff later
|
|
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
|
|
parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
|
|
}
|
|
|
|
// pad the end with zeros, but make sure to not forget the extra bytes
|
|
if (extraBytes === 1) {
|
|
tmp = uint8[len - 1]
|
|
parts.push(
|
|
lookup[tmp >> 2] +
|
|
lookup[(tmp << 4) & 0x3F] +
|
|
'=='
|
|
)
|
|
} else if (extraBytes === 2) {
|
|
tmp = (uint8[len - 2] << 8) + uint8[len - 1]
|
|
parts.push(
|
|
lookup[tmp >> 10] +
|
|
lookup[(tmp >> 4) & 0x3F] +
|
|
lookup[(tmp << 2) & 0x3F] +
|
|
'='
|
|
)
|
|
}
|
|
|
|
return parts.join('')
|
|
}
|
|
|
|
},{}],26:[function(require,module,exports){
|
|
|
|
},{}],27:[function(require,module,exports){
|
|
(function (Buffer){(function (){
|
|
/*!
|
|
* The buffer module from node.js, for the browser.
|
|
*
|
|
* @author Feross Aboukhadijeh <https://feross.org>
|
|
* @license MIT
|
|
*/
|
|
/* eslint-disable no-proto */
|
|
|
|
'use strict'
|
|
|
|
var base64 = require('base64-js')
|
|
var ieee754 = require('ieee754')
|
|
|
|
exports.Buffer = Buffer
|
|
exports.SlowBuffer = SlowBuffer
|
|
exports.INSPECT_MAX_BYTES = 50
|
|
|
|
var K_MAX_LENGTH = 0x7fffffff
|
|
exports.kMaxLength = K_MAX_LENGTH
|
|
|
|
/**
|
|
* If `Buffer.TYPED_ARRAY_SUPPORT`:
|
|
* === true Use Uint8Array implementation (fastest)
|
|
* === false Print warning and recommend using `buffer` v4.x which has an Object
|
|
* implementation (most compatible, even IE6)
|
|
*
|
|
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
|
|
* Opera 11.6+, iOS 4.2+.
|
|
*
|
|
* We report that the browser does not support typed arrays if the are not subclassable
|
|
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
|
|
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
|
|
* for __proto__ and has a buggy typed array implementation.
|
|
*/
|
|
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
|
|
|
|
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
|
|
typeof console.error === 'function') {
|
|
console.error(
|
|
'This browser lacks typed array (Uint8Array) support which is required by ' +
|
|
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
|
|
)
|
|
}
|
|
|
|
function typedArraySupport () {
|
|
// Can typed array instances can be augmented?
|
|
try {
|
|
var arr = new Uint8Array(1)
|
|
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
|
|
return arr.foo() === 42
|
|
} catch (e) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
Object.defineProperty(Buffer.prototype, 'parent', {
|
|
enumerable: true,
|
|
get: function () {
|
|
if (!Buffer.isBuffer(this)) return undefined
|
|
return this.buffer
|
|
}
|
|
})
|
|
|
|
Object.defineProperty(Buffer.prototype, 'offset', {
|
|
enumerable: true,
|
|
get: function () {
|
|
if (!Buffer.isBuffer(this)) return undefined
|
|
return this.byteOffset
|
|
}
|
|
})
|
|
|
|
function createBuffer (length) {
|
|
if (length > K_MAX_LENGTH) {
|
|
throw new RangeError('The value "' + length + '" is invalid for option "size"')
|
|
}
|
|
// Return an augmented `Uint8Array` instance
|
|
var buf = new Uint8Array(length)
|
|
buf.__proto__ = Buffer.prototype
|
|
return buf
|
|
}
|
|
|
|
/**
|
|
* The Buffer constructor returns instances of `Uint8Array` that have their
|
|
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
|
|
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
|
|
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
|
|
* returns a single octet.
|
|
*
|
|
* The `Uint8Array` prototype remains unmodified.
|
|
*/
|
|
|
|
function Buffer (arg, encodingOrOffset, length) {
|
|
// Common case.
|
|
if (typeof arg === 'number') {
|
|
if (typeof encodingOrOffset === 'string') {
|
|
throw new TypeError(
|
|
'The "string" argument must be of type string. Received type number'
|
|
)
|
|
}
|
|
return allocUnsafe(arg)
|
|
}
|
|
return from(arg, encodingOrOffset, length)
|
|
}
|
|
|
|
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
|
|
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
|
|
Buffer[Symbol.species] === Buffer) {
|
|
Object.defineProperty(Buffer, Symbol.species, {
|
|
value: null,
|
|
configurable: true,
|
|
enumerable: false,
|
|
writable: false
|
|
})
|
|
}
|
|
|
|
Buffer.poolSize = 8192 // not used by this implementation
|
|
|
|
function from (value, encodingOrOffset, length) {
|
|
if (typeof value === 'string') {
|
|
return fromString(value, encodingOrOffset)
|
|
}
|
|
|
|
if (ArrayBuffer.isView(value)) {
|
|
return fromArrayLike(value)
|
|
}
|
|
|
|
if (value == null) {
|
|
throw TypeError(
|
|
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
|
|
'or Array-like Object. Received type ' + (typeof value)
|
|
)
|
|
}
|
|
|
|
if (isInstance(value, ArrayBuffer) ||
|
|
(value && isInstance(value.buffer, ArrayBuffer))) {
|
|
return fromArrayBuffer(value, encodingOrOffset, length)
|
|
}
|
|
|
|
if (typeof value === 'number') {
|
|
throw new TypeError(
|
|
'The "value" argument must not be of type number. Received type number'
|
|
)
|
|
}
|
|
|
|
var valueOf = value.valueOf && value.valueOf()
|
|
if (valueOf != null && valueOf !== value) {
|
|
return Buffer.from(valueOf, encodingOrOffset, length)
|
|
}
|
|
|
|
var b = fromObject(value)
|
|
if (b) return b
|
|
|
|
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
|
|
typeof value[Symbol.toPrimitive] === 'function') {
|
|
return Buffer.from(
|
|
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
|
|
)
|
|
}
|
|
|
|
throw new TypeError(
|
|
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
|
|
'or Array-like Object. Received type ' + (typeof value)
|
|
)
|
|
}
|
|
|
|
/**
|
|
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
|
|
* if value is a number.
|
|
* Buffer.from(str[, encoding])
|
|
* Buffer.from(array)
|
|
* Buffer.from(buffer)
|
|
* Buffer.from(arrayBuffer[, byteOffset[, length]])
|
|
**/
|
|
Buffer.from = function (value, encodingOrOffset, length) {
|
|
return from(value, encodingOrOffset, length)
|
|
}
|
|
|
|
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
|
|
// https://github.com/feross/buffer/pull/148
|
|
Buffer.prototype.__proto__ = Uint8Array.prototype
|
|
Buffer.__proto__ = Uint8Array
|
|
|
|
function assertSize (size) {
|
|
if (typeof size !== 'number') {
|
|
throw new TypeError('"size" argument must be of type number')
|
|
} else if (size < 0) {
|
|
throw new RangeError('The value "' + size + '" is invalid for option "size"')
|
|
}
|
|
}
|
|
|
|
function alloc (size, fill, encoding) {
|
|
assertSize(size)
|
|
if (size <= 0) {
|
|
return createBuffer(size)
|
|
}
|
|
if (fill !== undefined) {
|
|
// Only pay attention to encoding if it's a string. This
|
|
// prevents accidentally sending in a number that would
|
|
// be interpretted as a start offset.
|
|
return typeof encoding === 'string'
|
|
? createBuffer(size).fill(fill, encoding)
|
|
: createBuffer(size).fill(fill)
|
|
}
|
|
return createBuffer(size)
|
|
}
|
|
|
|
/**
|
|
* Creates a new filled Buffer instance.
|
|
* alloc(size[, fill[, encoding]])
|
|
**/
|
|
Buffer.alloc = function (size, fill, encoding) {
|
|
return alloc(size, fill, encoding)
|
|
}
|
|
|
|
function allocUnsafe (size) {
|
|
assertSize(size)
|
|
return createBuffer(size < 0 ? 0 : checked(size) | 0)
|
|
}
|
|
|
|
/**
|
|
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
|
|
* */
|
|
Buffer.allocUnsafe = function (size) {
|
|
return allocUnsafe(size)
|
|
}
|
|
/**
|
|
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
|
|
*/
|
|
Buffer.allocUnsafeSlow = function (size) {
|
|
return allocUnsafe(size)
|
|
}
|
|
|
|
function fromString (string, encoding) {
|
|
if (typeof encoding !== 'string' || encoding === '') {
|
|
encoding = 'utf8'
|
|
}
|
|
|
|
if (!Buffer.isEncoding(encoding)) {
|
|
throw new TypeError('Unknown encoding: ' + encoding)
|
|
}
|
|
|
|
var length = byteLength(string, encoding) | 0
|
|
var buf = createBuffer(length)
|
|
|
|
var actual = buf.write(string, encoding)
|
|
|
|
if (actual !== length) {
|
|
// Writing a hex string, for example, that contains invalid characters will
|
|
// cause everything after the first invalid character to be ignored. (e.g.
|
|
// 'abxxcd' will be treated as 'ab')
|
|
buf = buf.slice(0, actual)
|
|
}
|
|
|
|
return buf
|
|
}
|
|
|
|
function fromArrayLike (array) {
|
|
var length = array.length < 0 ? 0 : checked(array.length) | 0
|
|
var buf = createBuffer(length)
|
|
for (var i = 0; i < length; i += 1) {
|
|
buf[i] = array[i] & 255
|
|
}
|
|
return buf
|
|
}
|
|
|
|
function fromArrayBuffer (array, byteOffset, length) {
|
|
if (byteOffset < 0 || array.byteLength < byteOffset) {
|
|
throw new RangeError('"offset" is outside of buffer bounds')
|
|
}
|
|
|
|
if (array.byteLength < byteOffset + (length || 0)) {
|
|
throw new RangeError('"length" is outside of buffer bounds')
|
|
}
|
|
|
|
var buf
|
|
if (byteOffset === undefined && length === undefined) {
|
|
buf = new Uint8Array(array)
|
|
} else if (length === undefined) {
|
|
buf = new Uint8Array(array, byteOffset)
|
|
} else {
|
|
buf = new Uint8Array(array, byteOffset, length)
|
|
}
|
|
|
|
// Return an augmented `Uint8Array` instance
|
|
buf.__proto__ = Buffer.prototype
|
|
return buf
|
|
}
|
|
|
|
function fromObject (obj) {
|
|
if (Buffer.isBuffer(obj)) {
|
|
var len = checked(obj.length) | 0
|
|
var buf = createBuffer(len)
|
|
|
|
if (buf.length === 0) {
|
|
return buf
|
|
}
|
|
|
|
obj.copy(buf, 0, 0, len)
|
|
return buf
|
|
}
|
|
|
|
if (obj.length !== undefined) {
|
|
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
|
|
return createBuffer(0)
|
|
}
|
|
return fromArrayLike(obj)
|
|
}
|
|
|
|
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
|
|
return fromArrayLike(obj.data)
|
|
}
|
|
}
|
|
|
|
function checked (length) {
|
|
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
|
|
// length is NaN (which is otherwise coerced to zero.)
|
|
if (length >= K_MAX_LENGTH) {
|
|
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
|
|
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
|
|
}
|
|
return length | 0
|
|
}
|
|
|
|
function SlowBuffer (length) {
|
|
if (+length != length) { // eslint-disable-line eqeqeq
|
|
length = 0
|
|
}
|
|
return Buffer.alloc(+length)
|
|
}
|
|
|
|
Buffer.isBuffer = function isBuffer (b) {
|
|
return b != null && b._isBuffer === true &&
|
|
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
|
|
}
|
|
|
|
Buffer.compare = function compare (a, b) {
|
|
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
|
|
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
|
|
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
|
|
throw new TypeError(
|
|
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
|
|
)
|
|
}
|
|
|
|
if (a === b) return 0
|
|
|
|
var x = a.length
|
|
var y = b.length
|
|
|
|
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
|
|
if (a[i] !== b[i]) {
|
|
x = a[i]
|
|
y = b[i]
|
|
break
|
|
}
|
|
}
|
|
|
|
if (x < y) return -1
|
|
if (y < x) return 1
|
|
return 0
|
|
}
|
|
|
|
Buffer.isEncoding = function isEncoding (encoding) {
|
|
switch (String(encoding).toLowerCase()) {
|
|
case 'hex':
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
case 'ascii':
|
|
case 'latin1':
|
|
case 'binary':
|
|
case 'base64':
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
Buffer.concat = function concat (list, length) {
|
|
if (!Array.isArray(list)) {
|
|
throw new TypeError('"list" argument must be an Array of Buffers')
|
|
}
|
|
|
|
if (list.length === 0) {
|
|
return Buffer.alloc(0)
|
|
}
|
|
|
|
var i
|
|
if (length === undefined) {
|
|
length = 0
|
|
for (i = 0; i < list.length; ++i) {
|
|
length += list[i].length
|
|
}
|
|
}
|
|
|
|
var buffer = Buffer.allocUnsafe(length)
|
|
var pos = 0
|
|
for (i = 0; i < list.length; ++i) {
|
|
var buf = list[i]
|
|
if (isInstance(buf, Uint8Array)) {
|
|
buf = Buffer.from(buf)
|
|
}
|
|
if (!Buffer.isBuffer(buf)) {
|
|
throw new TypeError('"list" argument must be an Array of Buffers')
|
|
}
|
|
buf.copy(buffer, pos)
|
|
pos += buf.length
|
|
}
|
|
return buffer
|
|
}
|
|
|
|
function byteLength (string, encoding) {
|
|
if (Buffer.isBuffer(string)) {
|
|
return string.length
|
|
}
|
|
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
|
|
return string.byteLength
|
|
}
|
|
if (typeof string !== 'string') {
|
|
throw new TypeError(
|
|
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
|
|
'Received type ' + typeof string
|
|
)
|
|
}
|
|
|
|
var len = string.length
|
|
var mustMatch = (arguments.length > 2 && arguments[2] === true)
|
|
if (!mustMatch && len === 0) return 0
|
|
|
|
// Use a for loop to avoid recursion
|
|
var loweredCase = false
|
|
for (;;) {
|
|
switch (encoding) {
|
|
case 'ascii':
|
|
case 'latin1':
|
|
case 'binary':
|
|
return len
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return utf8ToBytes(string).length
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return len * 2
|
|
case 'hex':
|
|
return len >>> 1
|
|
case 'base64':
|
|
return base64ToBytes(string).length
|
|
default:
|
|
if (loweredCase) {
|
|
return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
|
|
}
|
|
encoding = ('' + encoding).toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
Buffer.byteLength = byteLength
|
|
|
|
function slowToString (encoding, start, end) {
|
|
var loweredCase = false
|
|
|
|
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
|
|
// property of a typed array.
|
|
|
|
// This behaves neither like String nor Uint8Array in that we set start/end
|
|
// to their upper/lower bounds if the value passed is out of range.
|
|
// undefined is handled specially as per ECMA-262 6th Edition,
|
|
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
|
|
if (start === undefined || start < 0) {
|
|
start = 0
|
|
}
|
|
// Return early if start > this.length. Done here to prevent potential uint32
|
|
// coercion fail below.
|
|
if (start > this.length) {
|
|
return ''
|
|
}
|
|
|
|
if (end === undefined || end > this.length) {
|
|
end = this.length
|
|
}
|
|
|
|
if (end <= 0) {
|
|
return ''
|
|
}
|
|
|
|
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
|
|
end >>>= 0
|
|
start >>>= 0
|
|
|
|
if (end <= start) {
|
|
return ''
|
|
}
|
|
|
|
if (!encoding) encoding = 'utf8'
|
|
|
|
while (true) {
|
|
switch (encoding) {
|
|
case 'hex':
|
|
return hexSlice(this, start, end)
|
|
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return utf8Slice(this, start, end)
|
|
|
|
case 'ascii':
|
|
return asciiSlice(this, start, end)
|
|
|
|
case 'latin1':
|
|
case 'binary':
|
|
return latin1Slice(this, start, end)
|
|
|
|
case 'base64':
|
|
return base64Slice(this, start, end)
|
|
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return utf16leSlice(this, start, end)
|
|
|
|
default:
|
|
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
|
|
encoding = (encoding + '').toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
|
|
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
|
|
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
|
|
// reliably in a browserify context because there could be multiple different
|
|
// copies of the 'buffer' package in use. This method works even for Buffer
|
|
// instances that were created from another copy of the `buffer` package.
|
|
// See: https://github.com/feross/buffer/issues/154
|
|
Buffer.prototype._isBuffer = true
|
|
|
|
function swap (b, n, m) {
|
|
var i = b[n]
|
|
b[n] = b[m]
|
|
b[m] = i
|
|
}
|
|
|
|
Buffer.prototype.swap16 = function swap16 () {
|
|
var len = this.length
|
|
if (len % 2 !== 0) {
|
|
throw new RangeError('Buffer size must be a multiple of 16-bits')
|
|
}
|
|
for (var i = 0; i < len; i += 2) {
|
|
swap(this, i, i + 1)
|
|
}
|
|
return this
|
|
}
|
|
|
|
Buffer.prototype.swap32 = function swap32 () {
|
|
var len = this.length
|
|
if (len % 4 !== 0) {
|
|
throw new RangeError('Buffer size must be a multiple of 32-bits')
|
|
}
|
|
for (var i = 0; i < len; i += 4) {
|
|
swap(this, i, i + 3)
|
|
swap(this, i + 1, i + 2)
|
|
}
|
|
return this
|
|
}
|
|
|
|
Buffer.prototype.swap64 = function swap64 () {
|
|
var len = this.length
|
|
if (len % 8 !== 0) {
|
|
throw new RangeError('Buffer size must be a multiple of 64-bits')
|
|
}
|
|
for (var i = 0; i < len; i += 8) {
|
|
swap(this, i, i + 7)
|
|
swap(this, i + 1, i + 6)
|
|
swap(this, i + 2, i + 5)
|
|
swap(this, i + 3, i + 4)
|
|
}
|
|
return this
|
|
}
|
|
|
|
Buffer.prototype.toString = function toString () {
|
|
var length = this.length
|
|
if (length === 0) return ''
|
|
if (arguments.length === 0) return utf8Slice(this, 0, length)
|
|
return slowToString.apply(this, arguments)
|
|
}
|
|
|
|
Buffer.prototype.toLocaleString = Buffer.prototype.toString
|
|
|
|
Buffer.prototype.equals = function equals (b) {
|
|
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
|
|
if (this === b) return true
|
|
return Buffer.compare(this, b) === 0
|
|
}
|
|
|
|
Buffer.prototype.inspect = function inspect () {
|
|
var str = ''
|
|
var max = exports.INSPECT_MAX_BYTES
|
|
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
|
|
if (this.length > max) str += ' ... '
|
|
return '<Buffer ' + str + '>'
|
|
}
|
|
|
|
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
|
|
if (isInstance(target, Uint8Array)) {
|
|
target = Buffer.from(target, target.offset, target.byteLength)
|
|
}
|
|
if (!Buffer.isBuffer(target)) {
|
|
throw new TypeError(
|
|
'The "target" argument must be one of type Buffer or Uint8Array. ' +
|
|
'Received type ' + (typeof target)
|
|
)
|
|
}
|
|
|
|
if (start === undefined) {
|
|
start = 0
|
|
}
|
|
if (end === undefined) {
|
|
end = target ? target.length : 0
|
|
}
|
|
if (thisStart === undefined) {
|
|
thisStart = 0
|
|
}
|
|
if (thisEnd === undefined) {
|
|
thisEnd = this.length
|
|
}
|
|
|
|
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
|
|
throw new RangeError('out of range index')
|
|
}
|
|
|
|
if (thisStart >= thisEnd && start >= end) {
|
|
return 0
|
|
}
|
|
if (thisStart >= thisEnd) {
|
|
return -1
|
|
}
|
|
if (start >= end) {
|
|
return 1
|
|
}
|
|
|
|
start >>>= 0
|
|
end >>>= 0
|
|
thisStart >>>= 0
|
|
thisEnd >>>= 0
|
|
|
|
if (this === target) return 0
|
|
|
|
var x = thisEnd - thisStart
|
|
var y = end - start
|
|
var len = Math.min(x, y)
|
|
|
|
var thisCopy = this.slice(thisStart, thisEnd)
|
|
var targetCopy = target.slice(start, end)
|
|
|
|
for (var i = 0; i < len; ++i) {
|
|
if (thisCopy[i] !== targetCopy[i]) {
|
|
x = thisCopy[i]
|
|
y = targetCopy[i]
|
|
break
|
|
}
|
|
}
|
|
|
|
if (x < y) return -1
|
|
if (y < x) return 1
|
|
return 0
|
|
}
|
|
|
|
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
|
|
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
|
|
//
|
|
// Arguments:
|
|
// - buffer - a Buffer to search
|
|
// - val - a string, Buffer, or number
|
|
// - byteOffset - an index into `buffer`; will be clamped to an int32
|
|
// - encoding - an optional encoding, relevant is val is a string
|
|
// - dir - true for indexOf, false for lastIndexOf
|
|
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
|
|
// Empty buffer means no match
|
|
if (buffer.length === 0) return -1
|
|
|
|
// Normalize byteOffset
|
|
if (typeof byteOffset === 'string') {
|
|
encoding = byteOffset
|
|
byteOffset = 0
|
|
} else if (byteOffset > 0x7fffffff) {
|
|
byteOffset = 0x7fffffff
|
|
} else if (byteOffset < -0x80000000) {
|
|
byteOffset = -0x80000000
|
|
}
|
|
byteOffset = +byteOffset // Coerce to Number.
|
|
if (numberIsNaN(byteOffset)) {
|
|
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
|
|
byteOffset = dir ? 0 : (buffer.length - 1)
|
|
}
|
|
|
|
// Normalize byteOffset: negative offsets start from the end of the buffer
|
|
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
|
|
if (byteOffset >= buffer.length) {
|
|
if (dir) return -1
|
|
else byteOffset = buffer.length - 1
|
|
} else if (byteOffset < 0) {
|
|
if (dir) byteOffset = 0
|
|
else return -1
|
|
}
|
|
|
|
// Normalize val
|
|
if (typeof val === 'string') {
|
|
val = Buffer.from(val, encoding)
|
|
}
|
|
|
|
// Finally, search either indexOf (if dir is true) or lastIndexOf
|
|
if (Buffer.isBuffer(val)) {
|
|
// Special case: looking for empty string/buffer always fails
|
|
if (val.length === 0) {
|
|
return -1
|
|
}
|
|
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
|
|
} else if (typeof val === 'number') {
|
|
val = val & 0xFF // Search for a byte value [0-255]
|
|
if (typeof Uint8Array.prototype.indexOf === 'function') {
|
|
if (dir) {
|
|
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
|
|
} else {
|
|
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
|
|
}
|
|
}
|
|
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
|
|
}
|
|
|
|
throw new TypeError('val must be string, number or Buffer')
|
|
}
|
|
|
|
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
|
|
var indexSize = 1
|
|
var arrLength = arr.length
|
|
var valLength = val.length
|
|
|
|
if (encoding !== undefined) {
|
|
encoding = String(encoding).toLowerCase()
|
|
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
|
|
encoding === 'utf16le' || encoding === 'utf-16le') {
|
|
if (arr.length < 2 || val.length < 2) {
|
|
return -1
|
|
}
|
|
indexSize = 2
|
|
arrLength /= 2
|
|
valLength /= 2
|
|
byteOffset /= 2
|
|
}
|
|
}
|
|
|
|
function read (buf, i) {
|
|
if (indexSize === 1) {
|
|
return buf[i]
|
|
} else {
|
|
return buf.readUInt16BE(i * indexSize)
|
|
}
|
|
}
|
|
|
|
var i
|
|
if (dir) {
|
|
var foundIndex = -1
|
|
for (i = byteOffset; i < arrLength; i++) {
|
|
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
|
|
if (foundIndex === -1) foundIndex = i
|
|
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
|
|
} else {
|
|
if (foundIndex !== -1) i -= i - foundIndex
|
|
foundIndex = -1
|
|
}
|
|
}
|
|
} else {
|
|
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
|
|
for (i = byteOffset; i >= 0; i--) {
|
|
var found = true
|
|
for (var j = 0; j < valLength; j++) {
|
|
if (read(arr, i + j) !== read(val, j)) {
|
|
found = false
|
|
break
|
|
}
|
|
}
|
|
if (found) return i
|
|
}
|
|
}
|
|
|
|
return -1
|
|
}
|
|
|
|
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
|
|
return this.indexOf(val, byteOffset, encoding) !== -1
|
|
}
|
|
|
|
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
|
|
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
|
|
}
|
|
|
|
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
|
|
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
|
|
}
|
|
|
|
function hexWrite (buf, string, offset, length) {
|
|
offset = Number(offset) || 0
|
|
var remaining = buf.length - offset
|
|
if (!length) {
|
|
length = remaining
|
|
} else {
|
|
length = Number(length)
|
|
if (length > remaining) {
|
|
length = remaining
|
|
}
|
|
}
|
|
|
|
var strLen = string.length
|
|
|
|
if (length > strLen / 2) {
|
|
length = strLen / 2
|
|
}
|
|
for (var i = 0; i < length; ++i) {
|
|
var parsed = parseInt(string.substr(i * 2, 2), 16)
|
|
if (numberIsNaN(parsed)) return i
|
|
buf[offset + i] = parsed
|
|
}
|
|
return i
|
|
}
|
|
|
|
function utf8Write (buf, string, offset, length) {
|
|
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
|
|
}
|
|
|
|
function asciiWrite (buf, string, offset, length) {
|
|
return blitBuffer(asciiToBytes(string), buf, offset, length)
|
|
}
|
|
|
|
function latin1Write (buf, string, offset, length) {
|
|
return asciiWrite(buf, string, offset, length)
|
|
}
|
|
|
|
function base64Write (buf, string, offset, length) {
|
|
return blitBuffer(base64ToBytes(string), buf, offset, length)
|
|
}
|
|
|
|
function ucs2Write (buf, string, offset, length) {
|
|
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
|
|
}
|
|
|
|
Buffer.prototype.write = function write (string, offset, length, encoding) {
|
|
// Buffer#write(string)
|
|
if (offset === undefined) {
|
|
encoding = 'utf8'
|
|
length = this.length
|
|
offset = 0
|
|
// Buffer#write(string, encoding)
|
|
} else if (length === undefined && typeof offset === 'string') {
|
|
encoding = offset
|
|
length = this.length
|
|
offset = 0
|
|
// Buffer#write(string, offset[, length][, encoding])
|
|
} else if (isFinite(offset)) {
|
|
offset = offset >>> 0
|
|
if (isFinite(length)) {
|
|
length = length >>> 0
|
|
if (encoding === undefined) encoding = 'utf8'
|
|
} else {
|
|
encoding = length
|
|
length = undefined
|
|
}
|
|
} else {
|
|
throw new Error(
|
|
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
|
|
)
|
|
}
|
|
|
|
var remaining = this.length - offset
|
|
if (length === undefined || length > remaining) length = remaining
|
|
|
|
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
|
|
throw new RangeError('Attempt to write outside buffer bounds')
|
|
}
|
|
|
|
if (!encoding) encoding = 'utf8'
|
|
|
|
var loweredCase = false
|
|
for (;;) {
|
|
switch (encoding) {
|
|
case 'hex':
|
|
return hexWrite(this, string, offset, length)
|
|
|
|
case 'utf8':
|
|
case 'utf-8':
|
|
return utf8Write(this, string, offset, length)
|
|
|
|
case 'ascii':
|
|
return asciiWrite(this, string, offset, length)
|
|
|
|
case 'latin1':
|
|
case 'binary':
|
|
return latin1Write(this, string, offset, length)
|
|
|
|
case 'base64':
|
|
// Warning: maxLength not taken into account in base64Write
|
|
return base64Write(this, string, offset, length)
|
|
|
|
case 'ucs2':
|
|
case 'ucs-2':
|
|
case 'utf16le':
|
|
case 'utf-16le':
|
|
return ucs2Write(this, string, offset, length)
|
|
|
|
default:
|
|
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
|
|
encoding = ('' + encoding).toLowerCase()
|
|
loweredCase = true
|
|
}
|
|
}
|
|
}
|
|
|
|
Buffer.prototype.toJSON = function toJSON () {
|
|
return {
|
|
type: 'Buffer',
|
|
data: Array.prototype.slice.call(this._arr || this, 0)
|
|
}
|
|
}
|
|
|
|
function base64Slice (buf, start, end) {
|
|
if (start === 0 && end === buf.length) {
|
|
return base64.fromByteArray(buf)
|
|
} else {
|
|
return base64.fromByteArray(buf.slice(start, end))
|
|
}
|
|
}
|
|
|
|
function utf8Slice (buf, start, end) {
|
|
end = Math.min(buf.length, end)
|
|
var res = []
|
|
|
|
var i = start
|
|
while (i < end) {
|
|
var firstByte = buf[i]
|
|
var codePoint = null
|
|
var bytesPerSequence = (firstByte > 0xEF) ? 4
|
|
: (firstByte > 0xDF) ? 3
|
|
: (firstByte > 0xBF) ? 2
|
|
: 1
|
|
|
|
if (i + bytesPerSequence <= end) {
|
|
var secondByte, thirdByte, fourthByte, tempCodePoint
|
|
|
|
switch (bytesPerSequence) {
|
|
case 1:
|
|
if (firstByte < 0x80) {
|
|
codePoint = firstByte
|
|
}
|
|
break
|
|
case 2:
|
|
secondByte = buf[i + 1]
|
|
if ((secondByte & 0xC0) === 0x80) {
|
|
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
|
|
if (tempCodePoint > 0x7F) {
|
|
codePoint = tempCodePoint
|
|
}
|
|
}
|
|
break
|
|
case 3:
|
|
secondByte = buf[i + 1]
|
|
thirdByte = buf[i + 2]
|
|
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
|
|
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
|
|
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
|
|
codePoint = tempCodePoint
|
|
}
|
|
}
|
|
break
|
|
case 4:
|
|
secondByte = buf[i + 1]
|
|
thirdByte = buf[i + 2]
|
|
fourthByte = buf[i + 3]
|
|
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
|
|
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
|
|
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
|
|
codePoint = tempCodePoint
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (codePoint === null) {
|
|
// we did not generate a valid codePoint so insert a
|
|
// replacement char (U+FFFD) and advance only 1 byte
|
|
codePoint = 0xFFFD
|
|
bytesPerSequence = 1
|
|
} else if (codePoint > 0xFFFF) {
|
|
// encode to utf16 (surrogate pair dance)
|
|
codePoint -= 0x10000
|
|
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
|
|
codePoint = 0xDC00 | codePoint & 0x3FF
|
|
}
|
|
|
|
res.push(codePoint)
|
|
i += bytesPerSequence
|
|
}
|
|
|
|
return decodeCodePointsArray(res)
|
|
}
|
|
|
|
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
|
|
// the lowest limit is Chrome, with 0x10000 args.
|
|
// We go 1 magnitude less, for safety
|
|
var MAX_ARGUMENTS_LENGTH = 0x1000
|
|
|
|
function decodeCodePointsArray (codePoints) {
|
|
var len = codePoints.length
|
|
if (len <= MAX_ARGUMENTS_LENGTH) {
|
|
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
|
|
}
|
|
|
|
// Decode in chunks to avoid "call stack size exceeded".
|
|
var res = ''
|
|
var i = 0
|
|
while (i < len) {
|
|
res += String.fromCharCode.apply(
|
|
String,
|
|
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
|
|
)
|
|
}
|
|
return res
|
|
}
|
|
|
|
function asciiSlice (buf, start, end) {
|
|
var ret = ''
|
|
end = Math.min(buf.length, end)
|
|
|
|
for (var i = start; i < end; ++i) {
|
|
ret += String.fromCharCode(buf[i] & 0x7F)
|
|
}
|
|
return ret
|
|
}
|
|
|
|
function latin1Slice (buf, start, end) {
|
|
var ret = ''
|
|
end = Math.min(buf.length, end)
|
|
|
|
for (var i = start; i < end; ++i) {
|
|
ret += String.fromCharCode(buf[i])
|
|
}
|
|
return ret
|
|
}
|
|
|
|
function hexSlice (buf, start, end) {
|
|
var len = buf.length
|
|
|
|
if (!start || start < 0) start = 0
|
|
if (!end || end < 0 || end > len) end = len
|
|
|
|
var out = ''
|
|
for (var i = start; i < end; ++i) {
|
|
out += toHex(buf[i])
|
|
}
|
|
return out
|
|
}
|
|
|
|
function utf16leSlice (buf, start, end) {
|
|
var bytes = buf.slice(start, end)
|
|
var res = ''
|
|
for (var i = 0; i < bytes.length; i += 2) {
|
|
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
|
|
}
|
|
return res
|
|
}
|
|
|
|
Buffer.prototype.slice = function slice (start, end) {
|
|
var len = this.length
|
|
start = ~~start
|
|
end = end === undefined ? len : ~~end
|
|
|
|
if (start < 0) {
|
|
start += len
|
|
if (start < 0) start = 0
|
|
} else if (start > len) {
|
|
start = len
|
|
}
|
|
|
|
if (end < 0) {
|
|
end += len
|
|
if (end < 0) end = 0
|
|
} else if (end > len) {
|
|
end = len
|
|
}
|
|
|
|
if (end < start) end = start
|
|
|
|
var newBuf = this.subarray(start, end)
|
|
// Return an augmented `Uint8Array` instance
|
|
newBuf.__proto__ = Buffer.prototype
|
|
return newBuf
|
|
}
|
|
|
|
/*
|
|
* Need to make sure that buffer isn't trying to write out of bounds.
|
|
*/
|
|
function checkOffset (offset, ext, length) {
|
|
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
|
|
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
|
|
}
|
|
|
|
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) checkOffset(offset, byteLength, this.length)
|
|
|
|
var val = this[offset]
|
|
var mul = 1
|
|
var i = 0
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
val += this[offset + i] * mul
|
|
}
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) {
|
|
checkOffset(offset, byteLength, this.length)
|
|
}
|
|
|
|
var val = this[offset + --byteLength]
|
|
var mul = 1
|
|
while (byteLength > 0 && (mul *= 0x100)) {
|
|
val += this[offset + --byteLength] * mul
|
|
}
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 1, this.length)
|
|
return this[offset]
|
|
}
|
|
|
|
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
return this[offset] | (this[offset + 1] << 8)
|
|
}
|
|
|
|
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
return (this[offset] << 8) | this[offset + 1]
|
|
}
|
|
|
|
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return ((this[offset]) |
|
|
(this[offset + 1] << 8) |
|
|
(this[offset + 2] << 16)) +
|
|
(this[offset + 3] * 0x1000000)
|
|
}
|
|
|
|
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return (this[offset] * 0x1000000) +
|
|
((this[offset + 1] << 16) |
|
|
(this[offset + 2] << 8) |
|
|
this[offset + 3])
|
|
}
|
|
|
|
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) checkOffset(offset, byteLength, this.length)
|
|
|
|
var val = this[offset]
|
|
var mul = 1
|
|
var i = 0
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
val += this[offset + i] * mul
|
|
}
|
|
mul *= 0x80
|
|
|
|
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) checkOffset(offset, byteLength, this.length)
|
|
|
|
var i = byteLength
|
|
var mul = 1
|
|
var val = this[offset + --i]
|
|
while (i > 0 && (mul *= 0x100)) {
|
|
val += this[offset + --i] * mul
|
|
}
|
|
mul *= 0x80
|
|
|
|
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
|
|
|
|
return val
|
|
}
|
|
|
|
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 1, this.length)
|
|
if (!(this[offset] & 0x80)) return (this[offset])
|
|
return ((0xff - this[offset] + 1) * -1)
|
|
}
|
|
|
|
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
var val = this[offset] | (this[offset + 1] << 8)
|
|
return (val & 0x8000) ? val | 0xFFFF0000 : val
|
|
}
|
|
|
|
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 2, this.length)
|
|
var val = this[offset + 1] | (this[offset] << 8)
|
|
return (val & 0x8000) ? val | 0xFFFF0000 : val
|
|
}
|
|
|
|
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return (this[offset]) |
|
|
(this[offset + 1] << 8) |
|
|
(this[offset + 2] << 16) |
|
|
(this[offset + 3] << 24)
|
|
}
|
|
|
|
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
|
|
return (this[offset] << 24) |
|
|
(this[offset + 1] << 16) |
|
|
(this[offset + 2] << 8) |
|
|
(this[offset + 3])
|
|
}
|
|
|
|
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
return ieee754.read(this, offset, true, 23, 4)
|
|
}
|
|
|
|
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 4, this.length)
|
|
return ieee754.read(this, offset, false, 23, 4)
|
|
}
|
|
|
|
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 8, this.length)
|
|
return ieee754.read(this, offset, true, 52, 8)
|
|
}
|
|
|
|
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkOffset(offset, 8, this.length)
|
|
return ieee754.read(this, offset, false, 52, 8)
|
|
}
|
|
|
|
function checkInt (buf, value, offset, ext, max, min) {
|
|
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
|
|
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
|
|
if (offset + ext > buf.length) throw new RangeError('Index out of range')
|
|
}
|
|
|
|
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) {
|
|
var maxBytes = Math.pow(2, 8 * byteLength) - 1
|
|
checkInt(this, value, offset, byteLength, maxBytes, 0)
|
|
}
|
|
|
|
var mul = 1
|
|
var i = 0
|
|
this[offset] = value & 0xFF
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
this[offset + i] = (value / mul) & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
byteLength = byteLength >>> 0
|
|
if (!noAssert) {
|
|
var maxBytes = Math.pow(2, 8 * byteLength) - 1
|
|
checkInt(this, value, offset, byteLength, maxBytes, 0)
|
|
}
|
|
|
|
var i = byteLength - 1
|
|
var mul = 1
|
|
this[offset + i] = value & 0xFF
|
|
while (--i >= 0 && (mul *= 0x100)) {
|
|
this[offset + i] = (value / mul) & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
|
|
this[offset] = (value & 0xff)
|
|
return offset + 1
|
|
}
|
|
|
|
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
|
this[offset] = (value >>> 8)
|
|
this[offset + 1] = (value & 0xff)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
|
this[offset + 3] = (value >>> 24)
|
|
this[offset + 2] = (value >>> 16)
|
|
this[offset + 1] = (value >>> 8)
|
|
this[offset] = (value & 0xff)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
|
this[offset] = (value >>> 24)
|
|
this[offset + 1] = (value >>> 16)
|
|
this[offset + 2] = (value >>> 8)
|
|
this[offset + 3] = (value & 0xff)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
var limit = Math.pow(2, (8 * byteLength) - 1)
|
|
|
|
checkInt(this, value, offset, byteLength, limit - 1, -limit)
|
|
}
|
|
|
|
var i = 0
|
|
var mul = 1
|
|
var sub = 0
|
|
this[offset] = value & 0xFF
|
|
while (++i < byteLength && (mul *= 0x100)) {
|
|
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
|
|
sub = 1
|
|
}
|
|
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
var limit = Math.pow(2, (8 * byteLength) - 1)
|
|
|
|
checkInt(this, value, offset, byteLength, limit - 1, -limit)
|
|
}
|
|
|
|
var i = byteLength - 1
|
|
var mul = 1
|
|
var sub = 0
|
|
this[offset + i] = value & 0xFF
|
|
while (--i >= 0 && (mul *= 0x100)) {
|
|
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
|
|
sub = 1
|
|
}
|
|
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
|
|
}
|
|
|
|
return offset + byteLength
|
|
}
|
|
|
|
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
|
|
if (value < 0) value = 0xff + value + 1
|
|
this[offset] = (value & 0xff)
|
|
return offset + 1
|
|
}
|
|
|
|
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
|
|
this[offset] = (value >>> 8)
|
|
this[offset + 1] = (value & 0xff)
|
|
return offset + 2
|
|
}
|
|
|
|
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
|
|
this[offset] = (value & 0xff)
|
|
this[offset + 1] = (value >>> 8)
|
|
this[offset + 2] = (value >>> 16)
|
|
this[offset + 3] = (value >>> 24)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
|
|
if (value < 0) value = 0xffffffff + value + 1
|
|
this[offset] = (value >>> 24)
|
|
this[offset + 1] = (value >>> 16)
|
|
this[offset + 2] = (value >>> 8)
|
|
this[offset + 3] = (value & 0xff)
|
|
return offset + 4
|
|
}
|
|
|
|
function checkIEEE754 (buf, value, offset, ext, max, min) {
|
|
if (offset + ext > buf.length) throw new RangeError('Index out of range')
|
|
if (offset < 0) throw new RangeError('Index out of range')
|
|
}
|
|
|
|
function writeFloat (buf, value, offset, littleEndian, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
|
|
}
|
|
ieee754.write(buf, value, offset, littleEndian, 23, 4)
|
|
return offset + 4
|
|
}
|
|
|
|
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
|
|
return writeFloat(this, value, offset, true, noAssert)
|
|
}
|
|
|
|
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
|
|
return writeFloat(this, value, offset, false, noAssert)
|
|
}
|
|
|
|
function writeDouble (buf, value, offset, littleEndian, noAssert) {
|
|
value = +value
|
|
offset = offset >>> 0
|
|
if (!noAssert) {
|
|
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
|
|
}
|
|
ieee754.write(buf, value, offset, littleEndian, 52, 8)
|
|
return offset + 8
|
|
}
|
|
|
|
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
|
|
return writeDouble(this, value, offset, true, noAssert)
|
|
}
|
|
|
|
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
|
|
return writeDouble(this, value, offset, false, noAssert)
|
|
}
|
|
|
|
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
|
|
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
|
|
if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
|
|
if (!start) start = 0
|
|
if (!end && end !== 0) end = this.length
|
|
if (targetStart >= target.length) targetStart = target.length
|
|
if (!targetStart) targetStart = 0
|
|
if (end > 0 && end < start) end = start
|
|
|
|
// Copy 0 bytes; we're done
|
|
if (end === start) return 0
|
|
if (target.length === 0 || this.length === 0) return 0
|
|
|
|
// Fatal error conditions
|
|
if (targetStart < 0) {
|
|
throw new RangeError('targetStart out of bounds')
|
|
}
|
|
if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
|
|
if (end < 0) throw new RangeError('sourceEnd out of bounds')
|
|
|
|
// Are we oob?
|
|
if (end > this.length) end = this.length
|
|
if (target.length - targetStart < end - start) {
|
|
end = target.length - targetStart + start
|
|
}
|
|
|
|
var len = end - start
|
|
|
|
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
|
|
// Use built-in when available, missing from IE11
|
|
this.copyWithin(targetStart, start, end)
|
|
} else if (this === target && start < targetStart && targetStart < end) {
|
|
// descending copy from end
|
|
for (var i = len - 1; i >= 0; --i) {
|
|
target[i + targetStart] = this[i + start]
|
|
}
|
|
} else {
|
|
Uint8Array.prototype.set.call(
|
|
target,
|
|
this.subarray(start, end),
|
|
targetStart
|
|
)
|
|
}
|
|
|
|
return len
|
|
}
|
|
|
|
// Usage:
|
|
// buffer.fill(number[, offset[, end]])
|
|
// buffer.fill(buffer[, offset[, end]])
|
|
// buffer.fill(string[, offset[, end]][, encoding])
|
|
Buffer.prototype.fill = function fill (val, start, end, encoding) {
|
|
// Handle string cases:
|
|
if (typeof val === 'string') {
|
|
if (typeof start === 'string') {
|
|
encoding = start
|
|
start = 0
|
|
end = this.length
|
|
} else if (typeof end === 'string') {
|
|
encoding = end
|
|
end = this.length
|
|
}
|
|
if (encoding !== undefined && typeof encoding !== 'string') {
|
|
throw new TypeError('encoding must be a string')
|
|
}
|
|
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
|
|
throw new TypeError('Unknown encoding: ' + encoding)
|
|
}
|
|
if (val.length === 1) {
|
|
var code = val.charCodeAt(0)
|
|
if ((encoding === 'utf8' && code < 128) ||
|
|
encoding === 'latin1') {
|
|
// Fast path: If `val` fits into a single byte, use that numeric value.
|
|
val = code
|
|
}
|
|
}
|
|
} else if (typeof val === 'number') {
|
|
val = val & 255
|
|
}
|
|
|
|
// Invalid ranges are not set to a default, so can range check early.
|
|
if (start < 0 || this.length < start || this.length < end) {
|
|
throw new RangeError('Out of range index')
|
|
}
|
|
|
|
if (end <= start) {
|
|
return this
|
|
}
|
|
|
|
start = start >>> 0
|
|
end = end === undefined ? this.length : end >>> 0
|
|
|
|
if (!val) val = 0
|
|
|
|
var i
|
|
if (typeof val === 'number') {
|
|
for (i = start; i < end; ++i) {
|
|
this[i] = val
|
|
}
|
|
} else {
|
|
var bytes = Buffer.isBuffer(val)
|
|
? val
|
|
: Buffer.from(val, encoding)
|
|
var len = bytes.length
|
|
if (len === 0) {
|
|
throw new TypeError('The value "' + val +
|
|
'" is invalid for argument "value"')
|
|
}
|
|
for (i = 0; i < end - start; ++i) {
|
|
this[i + start] = bytes[i % len]
|
|
}
|
|
}
|
|
|
|
return this
|
|
}
|
|
|
|
// HELPER FUNCTIONS
|
|
// ================
|
|
|
|
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
|
|
|
|
function base64clean (str) {
|
|
// Node takes equal signs as end of the Base64 encoding
|
|
str = str.split('=')[0]
|
|
// Node strips out invalid characters like \n and \t from the string, base64-js does not
|
|
str = str.trim().replace(INVALID_BASE64_RE, '')
|
|
// Node converts strings with length < 2 to ''
|
|
if (str.length < 2) return ''
|
|
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
|
|
while (str.length % 4 !== 0) {
|
|
str = str + '='
|
|
}
|
|
return str
|
|
}
|
|
|
|
function toHex (n) {
|
|
if (n < 16) return '0' + n.toString(16)
|
|
return n.toString(16)
|
|
}
|
|
|
|
function utf8ToBytes (string, units) {
|
|
units = units || Infinity
|
|
var codePoint
|
|
var length = string.length
|
|
var leadSurrogate = null
|
|
var bytes = []
|
|
|
|
for (var i = 0; i < length; ++i) {
|
|
codePoint = string.charCodeAt(i)
|
|
|
|
// is surrogate component
|
|
if (codePoint > 0xD7FF && codePoint < 0xE000) {
|
|
// last char was a lead
|
|
if (!leadSurrogate) {
|
|
// no lead yet
|
|
if (codePoint > 0xDBFF) {
|
|
// unexpected trail
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
continue
|
|
} else if (i + 1 === length) {
|
|
// unpaired lead
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
continue
|
|
}
|
|
|
|
// valid lead
|
|
leadSurrogate = codePoint
|
|
|
|
continue
|
|
}
|
|
|
|
// 2 leads in a row
|
|
if (codePoint < 0xDC00) {
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
leadSurrogate = codePoint
|
|
continue
|
|
}
|
|
|
|
// valid surrogate pair
|
|
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
|
|
} else if (leadSurrogate) {
|
|
// valid bmp char, but last char was a lead
|
|
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
|
}
|
|
|
|
leadSurrogate = null
|
|
|
|
// encode utf8
|
|
if (codePoint < 0x80) {
|
|
if ((units -= 1) < 0) break
|
|
bytes.push(codePoint)
|
|
} else if (codePoint < 0x800) {
|
|
if ((units -= 2) < 0) break
|
|
bytes.push(
|
|
codePoint >> 0x6 | 0xC0,
|
|
codePoint & 0x3F | 0x80
|
|
)
|
|
} else if (codePoint < 0x10000) {
|
|
if ((units -= 3) < 0) break
|
|
bytes.push(
|
|
codePoint >> 0xC | 0xE0,
|
|
codePoint >> 0x6 & 0x3F | 0x80,
|
|
codePoint & 0x3F | 0x80
|
|
)
|
|
} else if (codePoint < 0x110000) {
|
|
if ((units -= 4) < 0) break
|
|
bytes.push(
|
|
codePoint >> 0x12 | 0xF0,
|
|
codePoint >> 0xC & 0x3F | 0x80,
|
|
codePoint >> 0x6 & 0x3F | 0x80,
|
|
codePoint & 0x3F | 0x80
|
|
)
|
|
} else {
|
|
throw new Error('Invalid code point')
|
|
}
|
|
}
|
|
|
|
return bytes
|
|
}
|
|
|
|
function asciiToBytes (str) {
|
|
var byteArray = []
|
|
for (var i = 0; i < str.length; ++i) {
|
|
// Node's code seems to be doing this and not & 0x7F..
|
|
byteArray.push(str.charCodeAt(i) & 0xFF)
|
|
}
|
|
return byteArray
|
|
}
|
|
|
|
function utf16leToBytes (str, units) {
|
|
var c, hi, lo
|
|
var byteArray = []
|
|
for (var i = 0; i < str.length; ++i) {
|
|
if ((units -= 2) < 0) break
|
|
|
|
c = str.charCodeAt(i)
|
|
hi = c >> 8
|
|
lo = c % 256
|
|
byteArray.push(lo)
|
|
byteArray.push(hi)
|
|
}
|
|
|
|
return byteArray
|
|
}
|
|
|
|
function base64ToBytes (str) {
|
|
return base64.toByteArray(base64clean(str))
|
|
}
|
|
|
|
function blitBuffer (src, dst, offset, length) {
|
|
for (var i = 0; i < length; ++i) {
|
|
if ((i + offset >= dst.length) || (i >= src.length)) break
|
|
dst[i + offset] = src[i]
|
|
}
|
|
return i
|
|
}
|
|
|
|
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
|
|
// the `instanceof` check but they should be treated as of that type.
|
|
// See: https://github.com/feross/buffer/issues/166
|
|
function isInstance (obj, type) {
|
|
return obj instanceof type ||
|
|
(obj != null && obj.constructor != null && obj.constructor.name != null &&
|
|
obj.constructor.name === type.name)
|
|
}
|
|
function numberIsNaN (obj) {
|
|
// For IE11 support
|
|
return obj !== obj // eslint-disable-line no-self-compare
|
|
}
|
|
|
|
}).call(this)}).call(this,require("buffer").Buffer)
|
|
},{"base64-js":25,"buffer":27,"ieee754":29}],28:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// 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.
|
|
|
|
'use strict';
|
|
|
|
var R = typeof Reflect === 'object' ? Reflect : null
|
|
var ReflectApply = R && typeof R.apply === 'function'
|
|
? R.apply
|
|
: function ReflectApply(target, receiver, args) {
|
|
return Function.prototype.apply.call(target, receiver, args);
|
|
}
|
|
|
|
var ReflectOwnKeys
|
|
if (R && typeof R.ownKeys === 'function') {
|
|
ReflectOwnKeys = R.ownKeys
|
|
} else if (Object.getOwnPropertySymbols) {
|
|
ReflectOwnKeys = function ReflectOwnKeys(target) {
|
|
return Object.getOwnPropertyNames(target)
|
|
.concat(Object.getOwnPropertySymbols(target));
|
|
};
|
|
} else {
|
|
ReflectOwnKeys = function ReflectOwnKeys(target) {
|
|
return Object.getOwnPropertyNames(target);
|
|
};
|
|
}
|
|
|
|
function ProcessEmitWarning(warning) {
|
|
if (console && console.warn) console.warn(warning);
|
|
}
|
|
|
|
var NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {
|
|
return value !== value;
|
|
}
|
|
|
|
function EventEmitter() {
|
|
EventEmitter.init.call(this);
|
|
}
|
|
module.exports = EventEmitter;
|
|
module.exports.once = once;
|
|
|
|
// Backwards-compat with node 0.10.x
|
|
EventEmitter.EventEmitter = EventEmitter;
|
|
|
|
EventEmitter.prototype._events = undefined;
|
|
EventEmitter.prototype._eventsCount = 0;
|
|
EventEmitter.prototype._maxListeners = undefined;
|
|
|
|
// By default EventEmitters will print a warning if more than 10 listeners are
|
|
// added to it. This is a useful default which helps finding memory leaks.
|
|
var defaultMaxListeners = 10;
|
|
|
|
function checkListener(listener) {
|
|
if (typeof listener !== 'function') {
|
|
throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
|
|
}
|
|
}
|
|
|
|
Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
|
|
enumerable: true,
|
|
get: function() {
|
|
return defaultMaxListeners;
|
|
},
|
|
set: function(arg) {
|
|
if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {
|
|
throw new RangeError('The value of "defaultMaxListeners" is out of range. It must be a non-negative number. Received ' + arg + '.');
|
|
}
|
|
defaultMaxListeners = arg;
|
|
}
|
|
});
|
|
|
|
EventEmitter.init = function() {
|
|
|
|
if (this._events === undefined ||
|
|
this._events === Object.getPrototypeOf(this)._events) {
|
|
this._events = Object.create(null);
|
|
this._eventsCount = 0;
|
|
}
|
|
|
|
this._maxListeners = this._maxListeners || undefined;
|
|
};
|
|
|
|
// Obviously not all Emitters should be limited to 10. This function allows
|
|
// that to be increased. Set to zero for unlimited.
|
|
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
|
|
if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {
|
|
throw new RangeError('The value of "n" is out of range. It must be a non-negative number. Received ' + n + '.');
|
|
}
|
|
this._maxListeners = n;
|
|
return this;
|
|
};
|
|
|
|
function _getMaxListeners(that) {
|
|
if (that._maxListeners === undefined)
|
|
return EventEmitter.defaultMaxListeners;
|
|
return that._maxListeners;
|
|
}
|
|
|
|
EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
|
|
return _getMaxListeners(this);
|
|
};
|
|
|
|
EventEmitter.prototype.emit = function emit(type) {
|
|
var args = [];
|
|
for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);
|
|
var doError = (type === 'error');
|
|
|
|
var events = this._events;
|
|
if (events !== undefined)
|
|
doError = (doError && events.error === undefined);
|
|
else if (!doError)
|
|
return false;
|
|
|
|
// If there is no 'error' event listener then throw.
|
|
if (doError) {
|
|
var er;
|
|
if (args.length > 0)
|
|
er = args[0];
|
|
if (er instanceof Error) {
|
|
// Note: The comments on the `throw` lines are intentional, they show
|
|
// up in Node's output if this results in an unhandled exception.
|
|
throw er; // Unhandled 'error' event
|
|
}
|
|
// At least give some kind of context to the user
|
|
var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));
|
|
err.context = er;
|
|
throw err; // Unhandled 'error' event
|
|
}
|
|
|
|
var handler = events[type];
|
|
|
|
if (handler === undefined)
|
|
return false;
|
|
|
|
if (typeof handler === 'function') {
|
|
ReflectApply(handler, this, args);
|
|
} else {
|
|
var len = handler.length;
|
|
var listeners = arrayClone(handler, len);
|
|
for (var i = 0; i < len; ++i)
|
|
ReflectApply(listeners[i], this, args);
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
function _addListener(target, type, listener, prepend) {
|
|
var m;
|
|
var events;
|
|
var existing;
|
|
|
|
checkListener(listener);
|
|
|
|
events = target._events;
|
|
if (events === undefined) {
|
|
events = target._events = Object.create(null);
|
|
target._eventsCount = 0;
|
|
} else {
|
|
// To avoid recursion in the case that type === "newListener"! Before
|
|
// adding it to the listeners, first emit "newListener".
|
|
if (events.newListener !== undefined) {
|
|
target.emit('newListener', type,
|
|
listener.listener ? listener.listener : listener);
|
|
|
|
// Re-assign `events` because a newListener handler could have caused the
|
|
// this._events to be assigned to a new object
|
|
events = target._events;
|
|
}
|
|
existing = events[type];
|
|
}
|
|
|
|
if (existing === undefined) {
|
|
// Optimize the case of one listener. Don't need the extra array object.
|
|
existing = events[type] = listener;
|
|
++target._eventsCount;
|
|
} else {
|
|
if (typeof existing === 'function') {
|
|
// Adding the second element, need to change to array.
|
|
existing = events[type] =
|
|
prepend ? [listener, existing] : [existing, listener];
|
|
// If we've already got an array, just append.
|
|
} else if (prepend) {
|
|
existing.unshift(listener);
|
|
} else {
|
|
existing.push(listener);
|
|
}
|
|
|
|
// Check for listener leak
|
|
m = _getMaxListeners(target);
|
|
if (m > 0 && existing.length > m && !existing.warned) {
|
|
existing.warned = true;
|
|
// No error code for this since it is a Warning
|
|
// eslint-disable-next-line no-restricted-syntax
|
|
var w = new Error('Possible EventEmitter memory leak detected. ' +
|
|
existing.length + ' ' + String(type) + ' listeners ' +
|
|
'added. Use emitter.setMaxListeners() to ' +
|
|
'increase limit');
|
|
w.name = 'MaxListenersExceededWarning';
|
|
w.emitter = target;
|
|
w.type = type;
|
|
w.count = existing.length;
|
|
ProcessEmitWarning(w);
|
|
}
|
|
}
|
|
|
|
return target;
|
|
}
|
|
|
|
EventEmitter.prototype.addListener = function addListener(type, listener) {
|
|
return _addListener(this, type, listener, false);
|
|
};
|
|
|
|
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
|
|
|
|
EventEmitter.prototype.prependListener =
|
|
function prependListener(type, listener) {
|
|
return _addListener(this, type, listener, true);
|
|
};
|
|
|
|
function onceWrapper() {
|
|
if (!this.fired) {
|
|
this.target.removeListener(this.type, this.wrapFn);
|
|
this.fired = true;
|
|
if (arguments.length === 0)
|
|
return this.listener.call(this.target);
|
|
return this.listener.apply(this.target, arguments);
|
|
}
|
|
}
|
|
|
|
function _onceWrap(target, type, listener) {
|
|
var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
|
|
var wrapped = onceWrapper.bind(state);
|
|
wrapped.listener = listener;
|
|
state.wrapFn = wrapped;
|
|
return wrapped;
|
|
}
|
|
|
|
EventEmitter.prototype.once = function once(type, listener) {
|
|
checkListener(listener);
|
|
this.on(type, _onceWrap(this, type, listener));
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.prependOnceListener =
|
|
function prependOnceListener(type, listener) {
|
|
checkListener(listener);
|
|
this.prependListener(type, _onceWrap(this, type, listener));
|
|
return this;
|
|
};
|
|
|
|
// Emits a 'removeListener' event if and only if the listener was removed.
|
|
EventEmitter.prototype.removeListener =
|
|
function removeListener(type, listener) {
|
|
var list, events, position, i, originalListener;
|
|
|
|
checkListener(listener);
|
|
|
|
events = this._events;
|
|
if (events === undefined)
|
|
return this;
|
|
|
|
list = events[type];
|
|
if (list === undefined)
|
|
return this;
|
|
|
|
if (list === listener || list.listener === listener) {
|
|
if (--this._eventsCount === 0)
|
|
this._events = Object.create(null);
|
|
else {
|
|
delete events[type];
|
|
if (events.removeListener)
|
|
this.emit('removeListener', type, list.listener || listener);
|
|
}
|
|
} else if (typeof list !== 'function') {
|
|
position = -1;
|
|
|
|
for (i = list.length - 1; i >= 0; i--) {
|
|
if (list[i] === listener || list[i].listener === listener) {
|
|
originalListener = list[i].listener;
|
|
position = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (position < 0)
|
|
return this;
|
|
|
|
if (position === 0)
|
|
list.shift();
|
|
else {
|
|
spliceOne(list, position);
|
|
}
|
|
|
|
if (list.length === 1)
|
|
events[type] = list[0];
|
|
|
|
if (events.removeListener !== undefined)
|
|
this.emit('removeListener', type, originalListener || listener);
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
|
|
|
|
EventEmitter.prototype.removeAllListeners =
|
|
function removeAllListeners(type) {
|
|
var listeners, events, i;
|
|
|
|
events = this._events;
|
|
if (events === undefined)
|
|
return this;
|
|
|
|
// not listening for removeListener, no need to emit
|
|
if (events.removeListener === undefined) {
|
|
if (arguments.length === 0) {
|
|
this._events = Object.create(null);
|
|
this._eventsCount = 0;
|
|
} else if (events[type] !== undefined) {
|
|
if (--this._eventsCount === 0)
|
|
this._events = Object.create(null);
|
|
else
|
|
delete events[type];
|
|
}
|
|
return this;
|
|
}
|
|
|
|
// emit removeListener for all listeners on all events
|
|
if (arguments.length === 0) {
|
|
var keys = Object.keys(events);
|
|
var key;
|
|
for (i = 0; i < keys.length; ++i) {
|
|
key = keys[i];
|
|
if (key === 'removeListener') continue;
|
|
this.removeAllListeners(key);
|
|
}
|
|
this.removeAllListeners('removeListener');
|
|
this._events = Object.create(null);
|
|
this._eventsCount = 0;
|
|
return this;
|
|
}
|
|
|
|
listeners = events[type];
|
|
|
|
if (typeof listeners === 'function') {
|
|
this.removeListener(type, listeners);
|
|
} else if (listeners !== undefined) {
|
|
// LIFO order
|
|
for (i = listeners.length - 1; i >= 0; i--) {
|
|
this.removeListener(type, listeners[i]);
|
|
}
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
function _listeners(target, type, unwrap) {
|
|
var events = target._events;
|
|
|
|
if (events === undefined)
|
|
return [];
|
|
|
|
var evlistener = events[type];
|
|
if (evlistener === undefined)
|
|
return [];
|
|
|
|
if (typeof evlistener === 'function')
|
|
return unwrap ? [evlistener.listener || evlistener] : [evlistener];
|
|
|
|
return unwrap ?
|
|
unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
|
|
}
|
|
|
|
EventEmitter.prototype.listeners = function listeners(type) {
|
|
return _listeners(this, type, true);
|
|
};
|
|
|
|
EventEmitter.prototype.rawListeners = function rawListeners(type) {
|
|
return _listeners(this, type, false);
|
|
};
|
|
|
|
EventEmitter.listenerCount = function(emitter, type) {
|
|
if (typeof emitter.listenerCount === 'function') {
|
|
return emitter.listenerCount(type);
|
|
} else {
|
|
return listenerCount.call(emitter, type);
|
|
}
|
|
};
|
|
|
|
EventEmitter.prototype.listenerCount = listenerCount;
|
|
function listenerCount(type) {
|
|
var events = this._events;
|
|
|
|
if (events !== undefined) {
|
|
var evlistener = events[type];
|
|
|
|
if (typeof evlistener === 'function') {
|
|
return 1;
|
|
} else if (evlistener !== undefined) {
|
|
return evlistener.length;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
EventEmitter.prototype.eventNames = function eventNames() {
|
|
return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];
|
|
};
|
|
|
|
function arrayClone(arr, n) {
|
|
var copy = new Array(n);
|
|
for (var i = 0; i < n; ++i)
|
|
copy[i] = arr[i];
|
|
return copy;
|
|
}
|
|
|
|
function spliceOne(list, index) {
|
|
for (; index + 1 < list.length; index++)
|
|
list[index] = list[index + 1];
|
|
list.pop();
|
|
}
|
|
|
|
function unwrapListeners(arr) {
|
|
var ret = new Array(arr.length);
|
|
for (var i = 0; i < ret.length; ++i) {
|
|
ret[i] = arr[i].listener || arr[i];
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
function once(emitter, name) {
|
|
return new Promise(function (resolve, reject) {
|
|
function errorListener(err) {
|
|
emitter.removeListener(name, resolver);
|
|
reject(err);
|
|
}
|
|
|
|
function resolver() {
|
|
if (typeof emitter.removeListener === 'function') {
|
|
emitter.removeListener('error', errorListener);
|
|
}
|
|
resolve([].slice.call(arguments));
|
|
};
|
|
|
|
eventTargetAgnosticAddListener(emitter, name, resolver, { once: true });
|
|
if (name !== 'error') {
|
|
addErrorHandlerIfEventEmitter(emitter, errorListener, { once: true });
|
|
}
|
|
});
|
|
}
|
|
|
|
function addErrorHandlerIfEventEmitter(emitter, handler, flags) {
|
|
if (typeof emitter.on === 'function') {
|
|
eventTargetAgnosticAddListener(emitter, 'error', handler, flags);
|
|
}
|
|
}
|
|
|
|
function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
|
|
if (typeof emitter.on === 'function') {
|
|
if (flags.once) {
|
|
emitter.once(name, listener);
|
|
} else {
|
|
emitter.on(name, listener);
|
|
}
|
|
} else if (typeof emitter.addEventListener === 'function') {
|
|
// EventTarget does not have `error` event semantics like Node
|
|
// EventEmitters, we do not listen for `error` events here.
|
|
emitter.addEventListener(name, function wrapListener(arg) {
|
|
// IE does not have builtin `{ once: true }` support so we
|
|
// have to do it manually.
|
|
if (flags.once) {
|
|
emitter.removeEventListener(name, wrapListener);
|
|
}
|
|
listener(arg);
|
|
});
|
|
} else {
|
|
throw new TypeError('The "emitter" argument must be of type EventEmitter. Received type ' + typeof emitter);
|
|
}
|
|
}
|
|
|
|
},{}],29:[function(require,module,exports){
|
|
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
|
|
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
|
|
var e, m
|
|
var eLen = (nBytes * 8) - mLen - 1
|
|
var eMax = (1 << eLen) - 1
|
|
var eBias = eMax >> 1
|
|
var nBits = -7
|
|
var i = isLE ? (nBytes - 1) : 0
|
|
var d = isLE ? -1 : 1
|
|
var s = buffer[offset + i]
|
|
|
|
i += d
|
|
|
|
e = s & ((1 << (-nBits)) - 1)
|
|
s >>= (-nBits)
|
|
nBits += eLen
|
|
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
|
|
|
|
m = e & ((1 << (-nBits)) - 1)
|
|
e >>= (-nBits)
|
|
nBits += mLen
|
|
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
|
|
|
|
if (e === 0) {
|
|
e = 1 - eBias
|
|
} else if (e === eMax) {
|
|
return m ? NaN : ((s ? -1 : 1) * Infinity)
|
|
} else {
|
|
m = m + Math.pow(2, mLen)
|
|
e = e - eBias
|
|
}
|
|
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
|
|
}
|
|
|
|
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
|
|
var e, m, c
|
|
var eLen = (nBytes * 8) - mLen - 1
|
|
var eMax = (1 << eLen) - 1
|
|
var eBias = eMax >> 1
|
|
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
|
|
var i = isLE ? 0 : (nBytes - 1)
|
|
var d = isLE ? 1 : -1
|
|
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
|
|
|
|
value = Math.abs(value)
|
|
|
|
if (isNaN(value) || value === Infinity) {
|
|
m = isNaN(value) ? 1 : 0
|
|
e = eMax
|
|
} else {
|
|
e = Math.floor(Math.log(value) / Math.LN2)
|
|
if (value * (c = Math.pow(2, -e)) < 1) {
|
|
e--
|
|
c *= 2
|
|
}
|
|
if (e + eBias >= 1) {
|
|
value += rt / c
|
|
} else {
|
|
value += rt * Math.pow(2, 1 - eBias)
|
|
}
|
|
if (value * c >= 2) {
|
|
e++
|
|
c /= 2
|
|
}
|
|
|
|
if (e + eBias >= eMax) {
|
|
m = 0
|
|
e = eMax
|
|
} else if (e + eBias >= 1) {
|
|
m = ((value * c) - 1) * Math.pow(2, mLen)
|
|
e = e + eBias
|
|
} else {
|
|
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
|
|
e = 0
|
|
}
|
|
}
|
|
|
|
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
|
|
|
|
e = (e << mLen) | m
|
|
eLen += mLen
|
|
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
|
|
|
|
buffer[offset + i - d] |= s * 128
|
|
}
|
|
|
|
},{}],30:[function(require,module,exports){
|
|
// shim for using process in browser
|
|
var process = module.exports = {};
|
|
|
|
// cached from whatever global is present so that test runners that stub it
|
|
// don't break things. But we need to wrap it in a try catch in case it is
|
|
// wrapped in strict mode code which doesn't define any globals. It's inside a
|
|
// function because try/catches deoptimize in certain engines.
|
|
|
|
var cachedSetTimeout;
|
|
var cachedClearTimeout;
|
|
|
|
function defaultSetTimout() {
|
|
throw new Error('setTimeout has not been defined');
|
|
}
|
|
function defaultClearTimeout () {
|
|
throw new Error('clearTimeout has not been defined');
|
|
}
|
|
(function () {
|
|
try {
|
|
if (typeof setTimeout === 'function') {
|
|
cachedSetTimeout = setTimeout;
|
|
} else {
|
|
cachedSetTimeout = defaultSetTimout;
|
|
}
|
|
} catch (e) {
|
|
cachedSetTimeout = defaultSetTimout;
|
|
}
|
|
try {
|
|
if (typeof clearTimeout === 'function') {
|
|
cachedClearTimeout = clearTimeout;
|
|
} else {
|
|
cachedClearTimeout = defaultClearTimeout;
|
|
}
|
|
} catch (e) {
|
|
cachedClearTimeout = defaultClearTimeout;
|
|
}
|
|
} ())
|
|
function runTimeout(fun) {
|
|
if (cachedSetTimeout === setTimeout) {
|
|
//normal enviroments in sane situations
|
|
return setTimeout(fun, 0);
|
|
}
|
|
// if setTimeout wasn't available but was latter defined
|
|
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
|
|
cachedSetTimeout = setTimeout;
|
|
return setTimeout(fun, 0);
|
|
}
|
|
try {
|
|
// when when somebody has screwed with setTimeout but no I.E. maddness
|
|
return cachedSetTimeout(fun, 0);
|
|
} catch(e){
|
|
try {
|
|
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
|
|
return cachedSetTimeout.call(null, fun, 0);
|
|
} catch(e){
|
|
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
|
|
return cachedSetTimeout.call(this, fun, 0);
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
function runClearTimeout(marker) {
|
|
if (cachedClearTimeout === clearTimeout) {
|
|
//normal enviroments in sane situations
|
|
return clearTimeout(marker);
|
|
}
|
|
// if clearTimeout wasn't available but was latter defined
|
|
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
|
|
cachedClearTimeout = clearTimeout;
|
|
return clearTimeout(marker);
|
|
}
|
|
try {
|
|
// when when somebody has screwed with setTimeout but no I.E. maddness
|
|
return cachedClearTimeout(marker);
|
|
} catch (e){
|
|
try {
|
|
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
|
|
return cachedClearTimeout.call(null, marker);
|
|
} catch (e){
|
|
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
|
|
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
|
|
return cachedClearTimeout.call(this, marker);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
}
|
|
var queue = [];
|
|
var draining = false;
|
|
var currentQueue;
|
|
var queueIndex = -1;
|
|
|
|
function cleanUpNextTick() {
|
|
if (!draining || !currentQueue) {
|
|
return;
|
|
}
|
|
draining = false;
|
|
if (currentQueue.length) {
|
|
queue = currentQueue.concat(queue);
|
|
} else {
|
|
queueIndex = -1;
|
|
}
|
|
if (queue.length) {
|
|
drainQueue();
|
|
}
|
|
}
|
|
|
|
function drainQueue() {
|
|
if (draining) {
|
|
return;
|
|
}
|
|
var timeout = runTimeout(cleanUpNextTick);
|
|
draining = true;
|
|
|
|
var len = queue.length;
|
|
while(len) {
|
|
currentQueue = queue;
|
|
queue = [];
|
|
while (++queueIndex < len) {
|
|
if (currentQueue) {
|
|
currentQueue[queueIndex].run();
|
|
}
|
|
}
|
|
queueIndex = -1;
|
|
len = queue.length;
|
|
}
|
|
currentQueue = null;
|
|
draining = false;
|
|
runClearTimeout(timeout);
|
|
}
|
|
|
|
process.nextTick = function (fun) {
|
|
var args = new Array(arguments.length - 1);
|
|
if (arguments.length > 1) {
|
|
for (var i = 1; i < arguments.length; i++) {
|
|
args[i - 1] = arguments[i];
|
|
}
|
|
}
|
|
queue.push(new Item(fun, args));
|
|
if (queue.length === 1 && !draining) {
|
|
runTimeout(drainQueue);
|
|
}
|
|
};
|
|
|
|
// v8 likes predictible objects
|
|
function Item(fun, array) {
|
|
this.fun = fun;
|
|
this.array = array;
|
|
}
|
|
Item.prototype.run = function () {
|
|
this.fun.apply(null, this.array);
|
|
};
|
|
process.title = 'browser';
|
|
process.browser = true;
|
|
process.env = {};
|
|
process.argv = [];
|
|
process.version = ''; // empty string to avoid regexp issues
|
|
process.versions = {};
|
|
|
|
function noop() {}
|
|
|
|
process.on = noop;
|
|
process.addListener = noop;
|
|
process.once = noop;
|
|
process.off = noop;
|
|
process.removeListener = noop;
|
|
process.removeAllListeners = noop;
|
|
process.emit = noop;
|
|
process.prependListener = noop;
|
|
process.prependOnceListener = noop;
|
|
|
|
process.listeners = function (name) { return [] }
|
|
|
|
process.binding = function (name) {
|
|
throw new Error('process.binding is not supported');
|
|
};
|
|
|
|
process.cwd = function () { return '/' };
|
|
process.chdir = function (dir) {
|
|
throw new Error('process.chdir is not supported');
|
|
};
|
|
process.umask = function() { return 0; };
|
|
|
|
},{}],31:[function(require,module,exports){
|
|
(function (setImmediate,clearImmediate){(function (){
|
|
var nextTick = require('process/browser.js').nextTick;
|
|
var apply = Function.prototype.apply;
|
|
var slice = Array.prototype.slice;
|
|
var immediateIds = {};
|
|
var nextImmediateId = 0;
|
|
|
|
// DOM APIs, for completeness
|
|
|
|
exports.setTimeout = function() {
|
|
return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
|
|
};
|
|
exports.setInterval = function() {
|
|
return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
|
|
};
|
|
exports.clearTimeout =
|
|
exports.clearInterval = function(timeout) { timeout.close(); };
|
|
|
|
function Timeout(id, clearFn) {
|
|
this._id = id;
|
|
this._clearFn = clearFn;
|
|
}
|
|
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
|
|
Timeout.prototype.close = function() {
|
|
this._clearFn.call(window, this._id);
|
|
};
|
|
|
|
// Does not start the time, just sets up the members needed.
|
|
exports.enroll = function(item, msecs) {
|
|
clearTimeout(item._idleTimeoutId);
|
|
item._idleTimeout = msecs;
|
|
};
|
|
|
|
exports.unenroll = function(item) {
|
|
clearTimeout(item._idleTimeoutId);
|
|
item._idleTimeout = -1;
|
|
};
|
|
|
|
exports._unrefActive = exports.active = function(item) {
|
|
clearTimeout(item._idleTimeoutId);
|
|
|
|
var msecs = item._idleTimeout;
|
|
if (msecs >= 0) {
|
|
item._idleTimeoutId = setTimeout(function onTimeout() {
|
|
if (item._onTimeout)
|
|
item._onTimeout();
|
|
}, msecs);
|
|
}
|
|
};
|
|
|
|
// That's not how node.js implements it but the exposed api is the same.
|
|
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
|
|
var id = nextImmediateId++;
|
|
var args = arguments.length < 2 ? false : slice.call(arguments, 1);
|
|
|
|
immediateIds[id] = true;
|
|
|
|
nextTick(function onNextTick() {
|
|
if (immediateIds[id]) {
|
|
// fn.call() is faster so we optimize for the common use-case
|
|
// @see http://jsperf.com/call-apply-segu
|
|
if (args) {
|
|
fn.apply(null, args);
|
|
} else {
|
|
fn.call(null);
|
|
}
|
|
// Prevent ids from leaking
|
|
exports.clearImmediate(id);
|
|
}
|
|
});
|
|
|
|
return id;
|
|
};
|
|
|
|
exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
|
|
delete immediateIds[id];
|
|
};
|
|
}).call(this)}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
|
|
},{"process/browser.js":30,"timers":31}]},{},[5])(5)
|
|
});
|