rss-parser
Version:
A lightweight RSS parser, for Node and the browser
1,745 lines (1,498 loc) • 444 kB
JavaScript
/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, {
/******/ configurable: false,
/******/ enumerable: true,
/******/ get: getter
/******/ });
/******/ }
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = 45);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
// Generated by CoffeeScript 1.12.6
(function () {
var XMLCData,
XMLComment,
XMLDeclaration,
XMLDocType,
XMLElement,
XMLNode,
XMLProcessingInstruction,
XMLRaw,
XMLText,
isEmpty,
isFunction,
isObject,
ref,
hasProp = {}.hasOwnProperty;
ref = __webpack_require__(3), isObject = ref.isObject, isFunction = ref.isFunction, isEmpty = ref.isEmpty;
XMLElement = null;
XMLCData = null;
XMLComment = null;
XMLDeclaration = null;
XMLDocType = null;
XMLRaw = null;
XMLText = null;
XMLProcessingInstruction = null;
module.exports = XMLNode = function () {
function XMLNode(parent) {
this.parent = parent;
if (this.parent) {
this.options = this.parent.options;
this.stringify = this.parent.stringify;
}
this.children = [];
if (!XMLElement) {
XMLElement = __webpack_require__(12);
XMLCData = __webpack_require__(13);
XMLComment = __webpack_require__(14);
XMLDeclaration = __webpack_require__(15);
XMLDocType = __webpack_require__(16);
XMLRaw = __webpack_require__(21);
XMLText = __webpack_require__(22);
XMLProcessingInstruction = __webpack_require__(23);
}
}
XMLNode.prototype.element = function (name, attributes, text) {
var childNode, item, j, k, key, lastChild, len, len1, ref1, val;
lastChild = null;
if (attributes == null) {
attributes = {};
}
attributes = attributes.valueOf();
if (!isObject(attributes)) {
ref1 = [attributes, text], text = ref1[0], attributes = ref1[1];
}
if (name != null) {
name = name.valueOf();
}
if (Array.isArray(name)) {
for (j = 0, len = name.length; j < len; j++) {
item = name[j];
lastChild = this.element(item);
}
} else if (isFunction(name)) {
lastChild = this.element(name.apply());
} else if (isObject(name)) {
for (key in name) {
if (!hasProp.call(name, key)) continue;
val = name[key];
if (isFunction(val)) {
val = val.apply();
}
if (isObject(val) && isEmpty(val)) {
val = null;
}
if (!this.options.ignoreDecorators && this.stringify.convertAttKey && key.indexOf(this.stringify.convertAttKey) === 0) {
lastChild = this.attribute(key.substr(this.stringify.convertAttKey.length), val);
} else if (!this.options.separateArrayItems && Array.isArray(val)) {
for (k = 0, len1 = val.length; k < len1; k++) {
item = val[k];
childNode = {};
childNode[key] = item;
lastChild = this.element(childNode);
}
} else if (isObject(val)) {
lastChild = this.element(key);
lastChild.element(val);
} else {
lastChild = this.element(key, val);
}
}
} else {
if (!this.options.ignoreDecorators && this.stringify.convertTextKey && name.indexOf(this.stringify.convertTextKey) === 0) {
lastChild = this.text(text);
} else if (!this.options.ignoreDecorators && this.stringify.convertCDataKey && name.indexOf(this.stringify.convertCDataKey) === 0) {
lastChild = this.cdata(text);
} else if (!this.options.ignoreDecorators && this.stringify.convertCommentKey && name.indexOf(this.stringify.convertCommentKey) === 0) {
lastChild = this.comment(text);
} else if (!this.options.ignoreDecorators && this.stringify.convertRawKey && name.indexOf(this.stringify.convertRawKey) === 0) {
lastChild = this.raw(text);
} else if (!this.options.ignoreDecorators && this.stringify.convertPIKey && name.indexOf(this.stringify.convertPIKey) === 0) {
lastChild = this.instruction(name.substr(this.stringify.convertPIKey.length), text);
} else {
lastChild = this.node(name, attributes, text);
}
}
if (lastChild == null) {
throw new Error("Could not create any elements with: " + name);
}
return lastChild;
};
XMLNode.prototype.insertBefore = function (name, attributes, text) {
var child, i, removed;
if (this.isRoot) {
throw new Error("Cannot insert elements at root level");
}
i = this.parent.children.indexOf(this);
removed = this.parent.children.splice(i);
child = this.parent.element(name, attributes, text);
Array.prototype.push.apply(this.parent.children, removed);
return child;
};
XMLNode.prototype.insertAfter = function (name, attributes, text) {
var child, i, removed;
if (this.isRoot) {
throw new Error("Cannot insert elements at root level");
}
i = this.parent.children.indexOf(this);
removed = this.parent.children.splice(i + 1);
child = this.parent.element(name, attributes, text);
Array.prototype.push.apply(this.parent.children, removed);
return child;
};
XMLNode.prototype.remove = function () {
var i, ref1;
if (this.isRoot) {
throw new Error("Cannot remove the root element");
}
i = this.parent.children.indexOf(this);
[].splice.apply(this.parent.children, [i, i - i + 1].concat(ref1 = [])), ref1;
return this.parent;
};
XMLNode.prototype.node = function (name, attributes, text) {
var child, ref1;
if (name != null) {
name = name.valueOf();
}
attributes || (attributes = {});
attributes = attributes.valueOf();
if (!isObject(attributes)) {
ref1 = [attributes, text], text = ref1[0], attributes = ref1[1];
}
child = new XMLElement(this, name, attributes);
if (text != null) {
child.text(text);
}
this.children.push(child);
return child;
};
XMLNode.prototype.text = function (value) {
var child;
child = new XMLText(this, value);
this.children.push(child);
return this;
};
XMLNode.prototype.cdata = function (value) {
var child;
child = new XMLCData(this, value);
this.children.push(child);
return this;
};
XMLNode.prototype.comment = function (value) {
var child;
child = new XMLComment(this, value);
this.children.push(child);
return this;
};
XMLNode.prototype.commentBefore = function (value) {
var child, i, removed;
i = this.parent.children.indexOf(this);
removed = this.parent.children.splice(i);
child = this.parent.comment(value);
Array.prototype.push.apply(this.parent.children, removed);
return this;
};
XMLNode.prototype.commentAfter = function (value) {
var child, i, removed;
i = this.parent.children.indexOf(this);
removed = this.parent.children.splice(i + 1);
child = this.parent.comment(value);
Array.prototype.push.apply(this.parent.children, removed);
return this;
};
XMLNode.prototype.raw = function (value) {
var child;
child = new XMLRaw(this, value);
this.children.push(child);
return this;
};
XMLNode.prototype.instruction = function (target, value) {
var insTarget, insValue, instruction, j, len;
if (target != null) {
target = target.valueOf();
}
if (value != null) {
value = value.valueOf();
}
if (Array.isArray(target)) {
for (j = 0, len = target.length; j < len; j++) {
insTarget = target[j];
this.instruction(insTarget);
}
} else if (isObject(target)) {
for (insTarget in target) {
if (!hasProp.call(target, insTarget)) continue;
insValue = target[insTarget];
this.instruction(insTarget, insValue);
}
} else {
if (isFunction(value)) {
value = value.apply();
}
instruction = new XMLProcessingInstruction(this, target, value);
this.children.push(instruction);
}
return this;
};
XMLNode.prototype.instructionBefore = function (target, value) {
var child, i, removed;
i = this.parent.children.indexOf(this);
removed = this.parent.children.splice(i);
child = this.parent.instruction(target, value);
Array.prototype.push.apply(this.parent.children, removed);
return this;
};
XMLNode.prototype.instructionAfter = function (target, value) {
var child, i, removed;
i = this.parent.children.indexOf(this);
removed = this.parent.children.splice(i + 1);
child = this.parent.instruction(target, value);
Array.prototype.push.apply(this.parent.children, removed);
return this;
};
XMLNode.prototype.declaration = function (version, encoding, standalone) {
var doc, xmldec;
doc = this.document();
xmldec = new XMLDeclaration(doc, version, encoding, standalone);
if (doc.children[0] instanceof XMLDeclaration) {
doc.children[0] = xmldec;
} else {
doc.children.unshift(xmldec);
}
return doc.root() || doc;
};
XMLNode.prototype.doctype = function (pubID, sysID) {
var child, doc, doctype, i, j, k, len, len1, ref1, ref2;
doc = this.document();
doctype = new XMLDocType(doc, pubID, sysID);
ref1 = doc.children;
for (i = j = 0, len = ref1.length; j < len; i = ++j) {
child = ref1[i];
if (child instanceof XMLDocType) {
doc.children[i] = doctype;
return doctype;
}
}
ref2 = doc.children;
for (i = k = 0, len1 = ref2.length; k < len1; i = ++k) {
child = ref2[i];
if (child.isRoot) {
doc.children.splice(i, 0, doctype);
return doctype;
}
}
doc.children.push(doctype);
return doctype;
};
XMLNode.prototype.up = function () {
if (this.isRoot) {
throw new Error("The root node has no parent. Use doc() if you need to get the document object.");
}
return this.parent;
};
XMLNode.prototype.root = function () {
var node;
node = this;
while (node) {
if (node.isDocument) {
return node.rootObject;
} else if (node.isRoot) {
return node;
} else {
node = node.parent;
}
}
};
XMLNode.prototype.document = function () {
var node;
node = this;
while (node) {
if (node.isDocument) {
return node;
} else {
node = node.parent;
}
}
};
XMLNode.prototype.end = function (options) {
return this.document().end(options);
};
XMLNode.prototype.prev = function () {
var i;
i = this.parent.children.indexOf(this);
if (i < 1) {
throw new Error("Already at the first node");
}
return this.parent.children[i - 1];
};
XMLNode.prototype.next = function () {
var i;
i = this.parent.children.indexOf(this);
if (i === -1 || i === this.parent.children.length - 1) {
throw new Error("Already at the last node");
}
return this.parent.children[i + 1];
};
XMLNode.prototype.importDocument = function (doc) {
var clonedRoot;
clonedRoot = doc.root().clone();
clonedRoot.parent = this;
clonedRoot.isRoot = false;
this.children.push(clonedRoot);
return this;
};
XMLNode.prototype.ele = function (name, attributes, text) {
return this.element(name, attributes, text);
};
XMLNode.prototype.nod = function (name, attributes, text) {
return this.node(name, attributes, text);
};
XMLNode.prototype.txt = function (value) {
return this.text(value);
};
XMLNode.prototype.dat = function (value) {
return this.cdata(value);
};
XMLNode.prototype.com = function (value) {
return this.comment(value);
};
XMLNode.prototype.ins = function (target, value) {
return this.instruction(target, value);
};
XMLNode.prototype.doc = function () {
return this.document();
};
XMLNode.prototype.dec = function (version, encoding, standalone) {
return this.declaration(version, encoding, standalone);
};
XMLNode.prototype.dtd = function (pubID, sysID) {
return this.doctype(pubID, sysID);
};
XMLNode.prototype.e = function (name, attributes, text) {
return this.element(name, attributes, text);
};
XMLNode.prototype.n = function (name, attributes, text) {
return this.node(name, attributes, text);
};
XMLNode.prototype.t = function (value) {
return this.text(value);
};
XMLNode.prototype.d = function (value) {
return this.cdata(value);
};
XMLNode.prototype.c = function (value) {
return this.comment(value);
};
XMLNode.prototype.r = function (value) {
return this.raw(value);
};
XMLNode.prototype.i = function (target, value) {
return this.instruction(target, value);
};
XMLNode.prototype.u = function () {
return this.up();
};
XMLNode.prototype.importXMLBuilder = function (doc) {
return this.importDocument(doc);
};
return XMLNode;
}();
}).call(undefined);
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
var g;
// This works in non-strict mode
g = function () {
return this;
}();
try {
// This works if eval is allowed (see CSP)
g = g || Function("return this")() || (1, eval)("this");
} catch (e) {
// This works if the window reference is available
if ((typeof window === "undefined" ? "undefined" : _typeof(window)) === "object") g = window;
}
// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}
module.exports = g;
/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, 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) {
ctor.super_ = superCtor;
var TempCtor = function TempCtor() {};
TempCtor.prototype = superCtor.prototype;
ctor.prototype = new TempCtor();
ctor.prototype.constructor = ctor;
};
}
/***/ }),
/* 3 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
// Generated by CoffeeScript 1.12.6
(function () {
var assign,
isArray,
isEmpty,
isFunction,
isObject,
isPlainObject,
slice = [].slice,
hasProp = {}.hasOwnProperty;
assign = function assign() {
var i, key, len, source, sources, target;
target = arguments[0], sources = 2 <= arguments.length ? slice.call(arguments, 1) : [];
if (isFunction(Object.assign)) {
Object.assign.apply(null, arguments);
} else {
for (i = 0, len = sources.length; i < len; i++) {
source = sources[i];
if (source != null) {
for (key in source) {
if (!hasProp.call(source, key)) continue;
target[key] = source[key];
}
}
}
}
return target;
};
isFunction = function isFunction(val) {
return !!val && Object.prototype.toString.call(val) === '[object Function]';
};
isObject = function isObject(val) {
var ref;
return !!val && ((ref = typeof val === 'undefined' ? 'undefined' : _typeof(val)) === 'function' || ref === 'object');
};
isArray = function isArray(val) {
if (isFunction(Array.isArray)) {
return Array.isArray(val);
} else {
return Object.prototype.toString.call(val) === '[object Array]';
}
};
isEmpty = function isEmpty(val) {
var key;
if (isArray(val)) {
return !val.length;
} else {
for (key in val) {
if (!hasProp.call(val, key)) continue;
return false;
}
return true;
}
};
isPlainObject = function isPlainObject(val) {
var ctor, proto;
return isObject(val) && (proto = Object.getPrototypeOf(val)) && (ctor = proto.constructor) && typeof ctor === 'function' && ctor instanceof ctor && Function.prototype.toString.call(ctor) === Function.prototype.toString.call(Object);
};
module.exports.assign = assign;
module.exports.isFunction = isFunction;
module.exports.isObject = isObject;
module.exports.isArray = isArray;
module.exports.isEmpty = isEmpty;
module.exports.isPlainObject = isPlainObject;
}).call(undefined);
/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
// 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.
/*<replacement>*/
var processNextTick = __webpack_require__(9);
/*</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 = __webpack_require__(8);
util.inherits = __webpack_require__(2);
/*</replacement>*/
var Readable = __webpack_require__(32);
var Writable = __webpack_require__(24);
util.inherits(Duplex, Readable);
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);
}
// 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.
processNextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
get: function get() {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function set(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();
processNextTick(cb, err);
};
function forEach(xs, f) {
for (var i = 0, l = xs.length; i < l; i++) {
f(xs[i], i);
}
}
/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/* WEBPACK VAR INJECTION */(function(global) {/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
var base64 = __webpack_require__(49);
var ieee754 = __webpack_require__(50);
var isArray = __webpack_require__(30);
exports.Buffer = Buffer;
exports.SlowBuffer = SlowBuffer;
exports.INSPECT_MAX_BYTES = 50;
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Use 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+.
*
* Due to various browser bugs, sometimes the Object implementation will be used even
* when the browser supports typed arrays.
*
* Note:
*
* - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
* See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
*
* - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
*
* - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
* incorrect length in some situations.
* We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
* get the Object implementation, which is slower but behaves correctly.
*/
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined ? global.TYPED_ARRAY_SUPPORT : typedArraySupport();
/*
* Export kMaxLength after typed array support is determined.
*/
exports.kMaxLength = kMaxLength();
function typedArraySupport() {
try {
var arr = new Uint8Array(1);
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function foo() {
return 42;
} };
return arr.foo() === 42 && // typed array instances can be augmented
typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
arr.subarray(1, 1).byteLength === 0; // ie10 has broken `subarray`
} catch (e) {
return false;
}
}
function kMaxLength() {
return Buffer.TYPED_ARRAY_SUPPORT ? 0x7fffffff : 0x3fffffff;
}
function createBuffer(that, length) {
if (kMaxLength() < length) {
throw new RangeError('Invalid typed array length');
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = new Uint8Array(length);
that.__proto__ = Buffer.prototype;
} else {
// Fallback: Return an object instance of the Buffer class
if (that === null) {
that = new Buffer(length);
}
that.length = length;
}
return that;
}
/**
* 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) {
if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
return new Buffer(arg, encodingOrOffset, length);
}
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new Error('If encoding is specified then the first argument must be a string');
}
return allocUnsafe(this, arg);
}
return from(this, arg, encodingOrOffset, length);
}
Buffer.poolSize = 8192; // not used by this implementation
// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
arr.__proto__ = Buffer.prototype;
return arr;
};
function from(that, value, encodingOrOffset, length) {
if (typeof value === 'number') {
throw new TypeError('"value" argument must not be a number');
}
if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
return fromArrayBuffer(that, value, encodingOrOffset, length);
}
if (typeof value === 'string') {
return fromString(that, value, encodingOrOffset);
}
return fromObject(that, 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(null, value, encodingOrOffset, length);
};
if (Buffer.TYPED_ARRAY_SUPPORT) {
Buffer.prototype.__proto__ = Uint8Array.prototype;
Buffer.__proto__ = Uint8Array;
if (typeof Symbol !== 'undefined' && Symbol.species && Buffer[Symbol.species] === Buffer) {
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true
});
}
}
function assertSize(size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be a number');
} else if (size < 0) {
throw new RangeError('"size" argument must not be negative');
}
}
function alloc(that, size, fill, encoding) {
assertSize(size);
if (size <= 0) {
return createBuffer(that, 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(that, size).fill(fill, encoding) : createBuffer(that, size).fill(fill);
}
return createBuffer(that, size);
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(null, size, fill, encoding);
};
function allocUnsafe(that, size) {
assertSize(size);
that = createBuffer(that, size < 0 ? 0 : checked(size) | 0);
if (!Buffer.TYPED_ARRAY_SUPPORT) {
for (var i = 0; i < size; ++i) {
that[i] = 0;
}
}
return that;
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(null, size);
};
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(null, size);
};
function fromString(that, string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8';
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('"encoding" must be a valid string encoding');
}
var length = byteLength(string, encoding) | 0;
that = createBuffer(that, length);
var actual = that.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')
that = that.slice(0, actual);
}
return that;
}
function fromArrayLike(that, array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0;
that = createBuffer(that, length);
for (var i = 0; i < length; i += 1) {
that[i] = array[i] & 255;
}
return that;
}
function fromArrayBuffer(that, array, byteOffset, length) {
array.byteLength; // this throws if `array` is not a valid ArrayBuffer
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('\'offset\' is out of bounds');
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('\'length\' is out of bounds');
}
if (byteOffset === undefined && length === undefined) {
array = new Uint8Array(array);
} else if (length === undefined) {
array = new Uint8Array(array, byteOffset);
} else {
array = new Uint8Array(array, byteOffset, length);
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = array;
that.__proto__ = Buffer.prototype;
} else {
// Fallback: Return an object instance of the Buffer class
that = fromArrayLike(that, array);
}
return that;
}
function fromObject(that, obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0;
that = createBuffer(that, len);
if (that.length === 0) {
return that;
}
obj.copy(that, 0, 0, len);
return that;
}
if (obj) {
if (typeof ArrayBuffer !== 'undefined' && obj.buffer instanceof ArrayBuffer || 'length' in obj) {
if (typeof obj.length !== 'number' || isnan(obj.length)) {
return createBuffer(that, 0);
}
return fromArrayLike(that, obj);
}
if (obj.type === 'Buffer' && isArray(obj.data)) {
return fromArrayLike(that, obj.data);
}
}
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.');
}
function checked(length) {
// Note: cannot use `length < kMaxLength()` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= kMaxLength()) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' + 'size: 0x' + kMaxLength().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);
};
Buffer.compare = function compare(a, b) {
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError('Arguments must be Buffers');
}
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 (!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 (!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 (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' && (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
return string.byteLength;
}
if (typeof string !== 'string') {
string = '' + string;
}
var len = string.length;
if (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':
case undefined:
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 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;
}
}
}
// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
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 | 0;
if (length === 0) return '';
if (arguments.length === 0) return utf8Slice(this, 0, length);
return slowToString.apply(this, arguments);
};
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;
if (this.length > 0) {
str = this.toString('hex', 0, max).match(/.{2}/g).join(' ');
if (this.length > max) str += ' ... ';
}
return '<Buffer ' + str + '>';
};
Buffer.prototype.compare = function compare(target, start, end, thisStart, thisEnd) {
if (!Buffer.isBuffer(target)) {
throw new TypeError('Argument must be a Buffer');
}
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 (isNaN(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 (Buffer.TYPED_ARRAY_SUPPORT && 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;
}
}
// must be an even number of digits
var strLen = string.length;
if (strLen % 2 !== 0) throw new TypeError('Invalid hex string');
if (length > strLen / 2) {
length = strLen / 2;
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16);
if (isNaN(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;
}
// legacy write(string, encoding, offset, length) - remove in v0.13
} 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) {
tempCodeP