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18
BACK_BACK/node_modules/htmlparser2/LICENSE generated vendored Executable file
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Copyright 2010, 2011, Chris Winberry <chris@winberry.net>. All rights reserved.
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.

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BACK_BACK/node_modules/htmlparser2/README.md generated vendored Executable file
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# htmlparser2
[![NPM version](http://img.shields.io/npm/v/htmlparser2.svg?style=flat)](https://npmjs.org/package/htmlparser2)
[![Downloads](https://img.shields.io/npm/dm/htmlparser2.svg?style=flat)](https://npmjs.org/package/htmlparser2)
[![Build Status](http://img.shields.io/travis/fb55/htmlparser2/master.svg?style=flat)](http://travis-ci.org/fb55/htmlparser2)
[![Coverage](http://img.shields.io/coveralls/fb55/htmlparser2.svg?style=flat)](https://coveralls.io/r/fb55/htmlparser2)
A forgiving HTML/XML/RSS parser. The parser can handle streams and provides a callback interface.
## Installation
npm install htmlparser2
A live demo of htmlparser2 is available [here](https://astexplorer.net/#/2AmVrGuGVJ).
## Usage
```javascript
var htmlparser = require("htmlparser2");
var parser = new htmlparser.Parser({
onopentag: function(name, attribs){
if(name === "script" && attribs.type === "text/javascript"){
console.log("JS! Hooray!");
}
},
ontext: function(text){
console.log("-->", text);
},
onclosetag: function(tagname){
if(tagname === "script"){
console.log("That's it?!");
}
}
}, {decodeEntities: true});
parser.write("Xyz <script type='text/javascript'>var foo = '<<bar>>';</ script>");
parser.end();
```
Output (simplified):
```
--> Xyz
JS! Hooray!
--> var foo = '<<bar>>';
That's it?!
```
## Documentation
Read more about the parser and its options in the [wiki](https://github.com/fb55/htmlparser2/wiki/Parser-options).
## Get a DOM
The `DomHandler` (known as `DefaultHandler` in the original `htmlparser` module) produces a DOM (document object model) that can be manipulated using the [`DomUtils`](https://github.com/fb55/DomUtils) helper.
The `DomHandler`, while still bundled with this module, was moved to its [own module](https://github.com/fb55/domhandler). Have a look at it for further information.
## Parsing RSS/RDF/Atom Feeds
```javascript
new htmlparser.FeedHandler(function(<error> error, <object> feed){
...
});
```
Note: While the provided feed handler works for most feeds, you might want to use [danmactough/node-feedparser](https://github.com/danmactough/node-feedparser), which is much better tested and actively maintained.
## Performance
After having some artificial benchmarks for some time, __@AndreasMadsen__ published his [`htmlparser-benchmark`](https://github.com/AndreasMadsen/htmlparser-benchmark), which benchmarks HTML parses based on real-world websites.
At the time of writing, the latest versions of all supported parsers show the following performance characteristics on [Travis CI](https://travis-ci.org/AndreasMadsen/htmlparser-benchmark/builds/10805007) (please note that Travis doesn't guarantee equal conditions for all tests):
```
gumbo-parser : 34.9208 ms/file ± 21.4238
html-parser : 24.8224 ms/file ± 15.8703
html5 : 419.597 ms/file ± 264.265
htmlparser : 60.0722 ms/file ± 384.844
htmlparser2-dom: 12.0749 ms/file ± 6.49474
htmlparser2 : 7.49130 ms/file ± 5.74368
hubbub : 30.4980 ms/file ± 16.4682
libxmljs : 14.1338 ms/file ± 18.6541
parse5 : 22.0439 ms/file ± 15.3743
sax : 49.6513 ms/file ± 26.6032
```
## How does this module differ from [node-htmlparser](https://github.com/tautologistics/node-htmlparser)?
This is a fork of the `htmlparser` module. The main difference is that this is intended to be used only with node (it runs on other platforms using [browserify](https://github.com/substack/node-browserify)). `htmlparser2` was rewritten multiple times and, while it maintains an API that's compatible with `htmlparser` in most cases, the projects don't share any code anymore.
The parser now provides a callback interface close to [sax.js](https://github.com/isaacs/sax-js) (originally targeted at [readabilitySAX](https://github.com/fb55/readabilitysax)). As a result, old handlers won't work anymore.
The `DefaultHandler` and the `RssHandler` were renamed to clarify their purpose (to `DomHandler` and `FeedHandler`). The old names are still available when requiring `htmlparser2`, your code should work as expected.

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BACK_BACK/node_modules/htmlparser2/lib/CollectingHandler.js generated vendored Executable file
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module.exports = CollectingHandler;
function CollectingHandler(cbs) {
this._cbs = cbs || {};
this.events = [];
}
var EVENTS = require("./").EVENTS;
Object.keys(EVENTS).forEach(function(name) {
if (EVENTS[name] === 0) {
name = "on" + name;
CollectingHandler.prototype[name] = function() {
this.events.push([name]);
if (this._cbs[name]) this._cbs[name]();
};
} else if (EVENTS[name] === 1) {
name = "on" + name;
CollectingHandler.prototype[name] = function(a) {
this.events.push([name, a]);
if (this._cbs[name]) this._cbs[name](a);
};
} else if (EVENTS[name] === 2) {
name = "on" + name;
CollectingHandler.prototype[name] = function(a, b) {
this.events.push([name, a, b]);
if (this._cbs[name]) this._cbs[name](a, b);
};
} else {
throw Error("wrong number of arguments");
}
});
CollectingHandler.prototype.onreset = function() {
this.events = [];
if (this._cbs.onreset) this._cbs.onreset();
};
CollectingHandler.prototype.restart = function() {
if (this._cbs.onreset) this._cbs.onreset();
for (var i = 0, len = this.events.length; i < len; i++) {
if (this._cbs[this.events[i][0]]) {
var num = this.events[i].length;
if (num === 1) {
this._cbs[this.events[i][0]]();
} else if (num === 2) {
this._cbs[this.events[i][0]](this.events[i][1]);
} else {
this._cbs[this.events[i][0]](
this.events[i][1],
this.events[i][2]
);
}
}
}
};

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BACK_BACK/node_modules/htmlparser2/lib/FeedHandler.js generated vendored Executable file
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var DomHandler = require("domhandler");
var DomUtils = require("domutils");
//TODO: make this a streamable handler
function FeedHandler(callback, options) {
this.init(callback, options);
}
require("inherits")(FeedHandler, DomHandler);
FeedHandler.prototype.init = DomHandler;
function getElements(what, where) {
return DomUtils.getElementsByTagName(what, where, true);
}
function getOneElement(what, where) {
return DomUtils.getElementsByTagName(what, where, true, 1)[0];
}
function fetch(what, where, recurse) {
return DomUtils.getText(
DomUtils.getElementsByTagName(what, where, recurse, 1)
).trim();
}
function addConditionally(obj, prop, what, where, recurse) {
var tmp = fetch(what, where, recurse);
if (tmp) obj[prop] = tmp;
}
var isValidFeed = function(value) {
return value === "rss" || value === "feed" || value === "rdf:RDF";
};
FeedHandler.prototype.onend = function() {
var feed = {},
feedRoot = getOneElement(isValidFeed, this.dom),
tmp,
childs;
if (feedRoot) {
if (feedRoot.name === "feed") {
childs = feedRoot.children;
feed.type = "atom";
addConditionally(feed, "id", "id", childs);
addConditionally(feed, "title", "title", childs);
if (
(tmp = getOneElement("link", childs)) &&
(tmp = tmp.attribs) &&
(tmp = tmp.href)
)
feed.link = tmp;
addConditionally(feed, "description", "subtitle", childs);
if ((tmp = fetch("updated", childs))) feed.updated = new Date(tmp);
addConditionally(feed, "author", "email", childs, true);
feed.items = getElements("entry", childs).map(function(item) {
var entry = {},
tmp;
item = item.children;
addConditionally(entry, "id", "id", item);
addConditionally(entry, "title", "title", item);
if (
(tmp = getOneElement("link", item)) &&
(tmp = tmp.attribs) &&
(tmp = tmp.href)
)
entry.link = tmp;
if ((tmp = fetch("summary", item) || fetch("content", item)))
entry.description = tmp;
if ((tmp = fetch("updated", item)))
entry.pubDate = new Date(tmp);
return entry;
});
} else {
childs = getOneElement("channel", feedRoot.children).children;
feed.type = feedRoot.name.substr(0, 3);
feed.id = "";
addConditionally(feed, "title", "title", childs);
addConditionally(feed, "link", "link", childs);
addConditionally(feed, "description", "description", childs);
if ((tmp = fetch("lastBuildDate", childs)))
feed.updated = new Date(tmp);
addConditionally(feed, "author", "managingEditor", childs, true);
feed.items = getElements("item", feedRoot.children).map(function(
item
) {
var entry = {},
tmp;
item = item.children;
addConditionally(entry, "id", "guid", item);
addConditionally(entry, "title", "title", item);
addConditionally(entry, "link", "link", item);
addConditionally(entry, "description", "description", item);
if ((tmp = fetch("pubDate", item)))
entry.pubDate = new Date(tmp);
return entry;
});
}
}
this.dom = feed;
DomHandler.prototype._handleCallback.call(
this,
feedRoot ? null : Error("couldn't find root of feed")
);
};
module.exports = FeedHandler;

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BACK_BACK/node_modules/htmlparser2/lib/Parser.js generated vendored Executable file
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var Tokenizer = require("./Tokenizer.js");
/*
Options:
xmlMode: Disables the special behavior for script/style tags (false by default)
lowerCaseAttributeNames: call .toLowerCase for each attribute name (true if xmlMode is `false`)
lowerCaseTags: call .toLowerCase for each tag name (true if xmlMode is `false`)
*/
/*
Callbacks:
oncdataend,
oncdatastart,
onclosetag,
oncomment,
oncommentend,
onerror,
onopentag,
onprocessinginstruction,
onreset,
ontext
*/
var formTags = {
input: true,
option: true,
optgroup: true,
select: true,
button: true,
datalist: true,
textarea: true
};
var openImpliesClose = {
tr: { tr: true, th: true, td: true },
th: { th: true },
td: { thead: true, th: true, td: true },
body: { head: true, link: true, script: true },
li: { li: true },
p: { p: true },
h1: { p: true },
h2: { p: true },
h3: { p: true },
h4: { p: true },
h5: { p: true },
h6: { p: true },
select: formTags,
input: formTags,
output: formTags,
button: formTags,
datalist: formTags,
textarea: formTags,
option: { option: true },
optgroup: { optgroup: true }
};
var voidElements = {
__proto__: null,
area: true,
base: true,
basefont: true,
br: true,
col: true,
command: true,
embed: true,
frame: true,
hr: true,
img: true,
input: true,
isindex: true,
keygen: true,
link: true,
meta: true,
param: true,
source: true,
track: true,
wbr: true
};
var foreignContextElements = {
__proto__: null,
math: true,
svg: true
};
var htmlIntegrationElements = {
__proto__: null,
mi: true,
mo: true,
mn: true,
ms: true,
mtext: true,
"annotation-xml": true,
foreignObject: true,
desc: true,
title: true
};
var re_nameEnd = /\s|\//;
function Parser(cbs, options) {
this._options = options || {};
this._cbs = cbs || {};
this._tagname = "";
this._attribname = "";
this._attribvalue = "";
this._attribs = null;
this._stack = [];
this._foreignContext = [];
this.startIndex = 0;
this.endIndex = null;
this._lowerCaseTagNames =
"lowerCaseTags" in this._options
? !!this._options.lowerCaseTags
: !this._options.xmlMode;
this._lowerCaseAttributeNames =
"lowerCaseAttributeNames" in this._options
? !!this._options.lowerCaseAttributeNames
: !this._options.xmlMode;
if (this._options.Tokenizer) {
Tokenizer = this._options.Tokenizer;
}
this._tokenizer = new Tokenizer(this._options, this);
if (this._cbs.onparserinit) this._cbs.onparserinit(this);
}
require("inherits")(Parser, require("events").EventEmitter);
Parser.prototype._updatePosition = function(initialOffset) {
if (this.endIndex === null) {
if (this._tokenizer._sectionStart <= initialOffset) {
this.startIndex = 0;
} else {
this.startIndex = this._tokenizer._sectionStart - initialOffset;
}
} else this.startIndex = this.endIndex + 1;
this.endIndex = this._tokenizer.getAbsoluteIndex();
};
//Tokenizer event handlers
Parser.prototype.ontext = function(data) {
this._updatePosition(1);
this.endIndex--;
if (this._cbs.ontext) this._cbs.ontext(data);
};
Parser.prototype.onopentagname = function(name) {
if (this._lowerCaseTagNames) {
name = name.toLowerCase();
}
this._tagname = name;
if (!this._options.xmlMode && name in openImpliesClose) {
for (
var el;
(el = this._stack[this._stack.length - 1]) in
openImpliesClose[name];
this.onclosetag(el)
);
}
if (this._options.xmlMode || !(name in voidElements)) {
this._stack.push(name);
if (name in foreignContextElements) this._foreignContext.push(true);
else if (name in htmlIntegrationElements)
this._foreignContext.push(false);
}
if (this._cbs.onopentagname) this._cbs.onopentagname(name);
if (this._cbs.onopentag) this._attribs = {};
};
Parser.prototype.onopentagend = function() {
this._updatePosition(1);
if (this._attribs) {
if (this._cbs.onopentag)
this._cbs.onopentag(this._tagname, this._attribs);
this._attribs = null;
}
if (
!this._options.xmlMode &&
this._cbs.onclosetag &&
this._tagname in voidElements
) {
this._cbs.onclosetag(this._tagname);
}
this._tagname = "";
};
Parser.prototype.onclosetag = function(name) {
this._updatePosition(1);
if (this._lowerCaseTagNames) {
name = name.toLowerCase();
}
if (name in foreignContextElements || name in htmlIntegrationElements) {
this._foreignContext.pop();
}
if (
this._stack.length &&
(!(name in voidElements) || this._options.xmlMode)
) {
var pos = this._stack.lastIndexOf(name);
if (pos !== -1) {
if (this._cbs.onclosetag) {
pos = this._stack.length - pos;
while (pos--) this._cbs.onclosetag(this._stack.pop());
} else this._stack.length = pos;
} else if (name === "p" && !this._options.xmlMode) {
this.onopentagname(name);
this._closeCurrentTag();
}
} else if (!this._options.xmlMode && (name === "br" || name === "p")) {
this.onopentagname(name);
this._closeCurrentTag();
}
};
Parser.prototype.onselfclosingtag = function() {
if (
this._options.xmlMode ||
this._options.recognizeSelfClosing ||
this._foreignContext[this._foreignContext.length - 1]
) {
this._closeCurrentTag();
} else {
this.onopentagend();
}
};
Parser.prototype._closeCurrentTag = function() {
var name = this._tagname;
this.onopentagend();
//self-closing tags will be on the top of the stack
//(cheaper check than in onclosetag)
if (this._stack[this._stack.length - 1] === name) {
if (this._cbs.onclosetag) {
this._cbs.onclosetag(name);
}
this._stack.pop();
}
};
Parser.prototype.onattribname = function(name) {
if (this._lowerCaseAttributeNames) {
name = name.toLowerCase();
}
this._attribname = name;
};
Parser.prototype.onattribdata = function(value) {
this._attribvalue += value;
};
Parser.prototype.onattribend = function() {
if (this._cbs.onattribute)
this._cbs.onattribute(this._attribname, this._attribvalue);
if (
this._attribs &&
!Object.prototype.hasOwnProperty.call(this._attribs, this._attribname)
) {
this._attribs[this._attribname] = this._attribvalue;
}
this._attribname = "";
this._attribvalue = "";
};
Parser.prototype._getInstructionName = function(value) {
var idx = value.search(re_nameEnd),
name = idx < 0 ? value : value.substr(0, idx);
if (this._lowerCaseTagNames) {
name = name.toLowerCase();
}
return name;
};
Parser.prototype.ondeclaration = function(value) {
if (this._cbs.onprocessinginstruction) {
var name = this._getInstructionName(value);
this._cbs.onprocessinginstruction("!" + name, "!" + value);
}
};
Parser.prototype.onprocessinginstruction = function(value) {
if (this._cbs.onprocessinginstruction) {
var name = this._getInstructionName(value);
this._cbs.onprocessinginstruction("?" + name, "?" + value);
}
};
Parser.prototype.oncomment = function(value) {
this._updatePosition(4);
if (this._cbs.oncomment) this._cbs.oncomment(value);
if (this._cbs.oncommentend) this._cbs.oncommentend();
};
Parser.prototype.oncdata = function(value) {
this._updatePosition(1);
if (this._options.xmlMode || this._options.recognizeCDATA) {
if (this._cbs.oncdatastart) this._cbs.oncdatastart();
if (this._cbs.ontext) this._cbs.ontext(value);
if (this._cbs.oncdataend) this._cbs.oncdataend();
} else {
this.oncomment("[CDATA[" + value + "]]");
}
};
Parser.prototype.onerror = function(err) {
if (this._cbs.onerror) this._cbs.onerror(err);
};
Parser.prototype.onend = function() {
if (this._cbs.onclosetag) {
for (
var i = this._stack.length;
i > 0;
this._cbs.onclosetag(this._stack[--i])
);
}
if (this._cbs.onend) this._cbs.onend();
};
//Resets the parser to a blank state, ready to parse a new HTML document
Parser.prototype.reset = function() {
if (this._cbs.onreset) this._cbs.onreset();
this._tokenizer.reset();
this._tagname = "";
this._attribname = "";
this._attribs = null;
this._stack = [];
if (this._cbs.onparserinit) this._cbs.onparserinit(this);
};
//Parses a complete HTML document and pushes it to the handler
Parser.prototype.parseComplete = function(data) {
this.reset();
this.end(data);
};
Parser.prototype.write = function(chunk) {
this._tokenizer.write(chunk);
};
Parser.prototype.end = function(chunk) {
this._tokenizer.end(chunk);
};
Parser.prototype.pause = function() {
this._tokenizer.pause();
};
Parser.prototype.resume = function() {
this._tokenizer.resume();
};
//alias for backwards compat
Parser.prototype.parseChunk = Parser.prototype.write;
Parser.prototype.done = Parser.prototype.end;
module.exports = Parser;

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BACK_BACK/node_modules/htmlparser2/lib/ProxyHandler.js generated vendored Executable file
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module.exports = ProxyHandler;
function ProxyHandler(cbs) {
this._cbs = cbs || {};
}
var EVENTS = require("./").EVENTS;
Object.keys(EVENTS).forEach(function(name) {
if (EVENTS[name] === 0) {
name = "on" + name;
ProxyHandler.prototype[name] = function() {
if (this._cbs[name]) this._cbs[name]();
};
} else if (EVENTS[name] === 1) {
name = "on" + name;
ProxyHandler.prototype[name] = function(a) {
if (this._cbs[name]) this._cbs[name](a);
};
} else if (EVENTS[name] === 2) {
name = "on" + name;
ProxyHandler.prototype[name] = function(a, b) {
if (this._cbs[name]) this._cbs[name](a, b);
};
} else {
throw Error("wrong number of arguments");
}
});

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BACK_BACK/node_modules/htmlparser2/lib/Stream.js generated vendored Executable file
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module.exports = Stream;
var Parser = require("./WritableStream.js");
function Stream(options) {
Parser.call(this, new Cbs(this), options);
}
require("inherits")(Stream, Parser);
Stream.prototype.readable = true;
function Cbs(scope) {
this.scope = scope;
}
var EVENTS = require("../").EVENTS;
Object.keys(EVENTS).forEach(function(name) {
if (EVENTS[name] === 0) {
Cbs.prototype["on" + name] = function() {
this.scope.emit(name);
};
} else if (EVENTS[name] === 1) {
Cbs.prototype["on" + name] = function(a) {
this.scope.emit(name, a);
};
} else if (EVENTS[name] === 2) {
Cbs.prototype["on" + name] = function(a, b) {
this.scope.emit(name, a, b);
};
} else {
throw Error("wrong number of arguments!");
}
});

970
BACK_BACK/node_modules/htmlparser2/lib/Tokenizer.js generated vendored Executable file
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module.exports = Tokenizer;
var decodeCodePoint = require("entities/lib/decode_codepoint.js");
var entityMap = require("entities/maps/entities.json");
var legacyMap = require("entities/maps/legacy.json");
var xmlMap = require("entities/maps/xml.json");
var i = 0;
var TEXT = i++;
var BEFORE_TAG_NAME = i++; //after <
var IN_TAG_NAME = i++;
var IN_SELF_CLOSING_TAG = i++;
var BEFORE_CLOSING_TAG_NAME = i++;
var IN_CLOSING_TAG_NAME = i++;
var AFTER_CLOSING_TAG_NAME = i++;
//attributes
var BEFORE_ATTRIBUTE_NAME = i++;
var IN_ATTRIBUTE_NAME = i++;
var AFTER_ATTRIBUTE_NAME = i++;
var BEFORE_ATTRIBUTE_VALUE = i++;
var IN_ATTRIBUTE_VALUE_DQ = i++; // "
var IN_ATTRIBUTE_VALUE_SQ = i++; // '
var IN_ATTRIBUTE_VALUE_NQ = i++;
//declarations
var BEFORE_DECLARATION = i++; // !
var IN_DECLARATION = i++;
//processing instructions
var IN_PROCESSING_INSTRUCTION = i++; // ?
//comments
var BEFORE_COMMENT = i++;
var IN_COMMENT = i++;
var AFTER_COMMENT_1 = i++;
var AFTER_COMMENT_2 = i++;
//cdata
var BEFORE_CDATA_1 = i++; // [
var BEFORE_CDATA_2 = i++; // C
var BEFORE_CDATA_3 = i++; // D
var BEFORE_CDATA_4 = i++; // A
var BEFORE_CDATA_5 = i++; // T
var BEFORE_CDATA_6 = i++; // A
var IN_CDATA = i++; // [
var AFTER_CDATA_1 = i++; // ]
var AFTER_CDATA_2 = i++; // ]
//special tags
var BEFORE_SPECIAL = i++; //S
var BEFORE_SPECIAL_END = i++; //S
var BEFORE_SCRIPT_1 = i++; //C
var BEFORE_SCRIPT_2 = i++; //R
var BEFORE_SCRIPT_3 = i++; //I
var BEFORE_SCRIPT_4 = i++; //P
var BEFORE_SCRIPT_5 = i++; //T
var AFTER_SCRIPT_1 = i++; //C
var AFTER_SCRIPT_2 = i++; //R
var AFTER_SCRIPT_3 = i++; //I
var AFTER_SCRIPT_4 = i++; //P
var AFTER_SCRIPT_5 = i++; //T
var BEFORE_STYLE_1 = i++; //T
var BEFORE_STYLE_2 = i++; //Y
var BEFORE_STYLE_3 = i++; //L
var BEFORE_STYLE_4 = i++; //E
var AFTER_STYLE_1 = i++; //T
var AFTER_STYLE_2 = i++; //Y
var AFTER_STYLE_3 = i++; //L
var AFTER_STYLE_4 = i++; //E
var BEFORE_ENTITY = i++; //&
var BEFORE_NUMERIC_ENTITY = i++; //#
var IN_NAMED_ENTITY = i++;
var IN_NUMERIC_ENTITY = i++;
var IN_HEX_ENTITY = i++; //X
var j = 0;
var SPECIAL_NONE = j++;
var SPECIAL_SCRIPT = j++;
var SPECIAL_STYLE = j++;
function whitespace(c) {
return c === " " || c === "\n" || c === "\t" || c === "\f" || c === "\r";
}
function ifElseState(upper, SUCCESS, FAILURE) {
var lower = upper.toLowerCase();
if (upper === lower) {
return function(c) {
if (c === lower) {
this._state = SUCCESS;
} else {
this._state = FAILURE;
this._index--;
}
};
} else {
return function(c) {
if (c === lower || c === upper) {
this._state = SUCCESS;
} else {
this._state = FAILURE;
this._index--;
}
};
}
}
function consumeSpecialNameChar(upper, NEXT_STATE) {
var lower = upper.toLowerCase();
return function(c) {
if (c === lower || c === upper) {
this._state = NEXT_STATE;
} else {
this._state = IN_TAG_NAME;
this._index--; //consume the token again
}
};
}
function Tokenizer(options, cbs) {
this._state = TEXT;
this._buffer = "";
this._sectionStart = 0;
this._index = 0;
this._bufferOffset = 0; //chars removed from _buffer
this._baseState = TEXT;
this._special = SPECIAL_NONE;
this._cbs = cbs;
this._running = true;
this._ended = false;
this._xmlMode = !!(options && options.xmlMode);
this._decodeEntities = !!(options && options.decodeEntities);
}
Tokenizer.prototype._stateText = function(c) {
if (c === "<") {
if (this._index > this._sectionStart) {
this._cbs.ontext(this._getSection());
}
this._state = BEFORE_TAG_NAME;
this._sectionStart = this._index;
} else if (
this._decodeEntities &&
this._special === SPECIAL_NONE &&
c === "&"
) {
if (this._index > this._sectionStart) {
this._cbs.ontext(this._getSection());
}
this._baseState = TEXT;
this._state = BEFORE_ENTITY;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateBeforeTagName = function(c) {
if (c === "/") {
this._state = BEFORE_CLOSING_TAG_NAME;
} else if (c === "<") {
this._cbs.ontext(this._getSection());
this._sectionStart = this._index;
} else if (c === ">" || this._special !== SPECIAL_NONE || whitespace(c)) {
this._state = TEXT;
} else if (c === "!") {
this._state = BEFORE_DECLARATION;
this._sectionStart = this._index + 1;
} else if (c === "?") {
this._state = IN_PROCESSING_INSTRUCTION;
this._sectionStart = this._index + 1;
} else {
this._state =
!this._xmlMode && (c === "s" || c === "S")
? BEFORE_SPECIAL
: IN_TAG_NAME;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateInTagName = function(c) {
if (c === "/" || c === ">" || whitespace(c)) {
this._emitToken("onopentagname");
this._state = BEFORE_ATTRIBUTE_NAME;
this._index--;
}
};
Tokenizer.prototype._stateBeforeCloseingTagName = function(c) {
if (whitespace(c));
else if (c === ">") {
this._state = TEXT;
} else if (this._special !== SPECIAL_NONE) {
if (c === "s" || c === "S") {
this._state = BEFORE_SPECIAL_END;
} else {
this._state = TEXT;
this._index--;
}
} else {
this._state = IN_CLOSING_TAG_NAME;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateInCloseingTagName = function(c) {
if (c === ">" || whitespace(c)) {
this._emitToken("onclosetag");
this._state = AFTER_CLOSING_TAG_NAME;
this._index--;
}
};
Tokenizer.prototype._stateAfterCloseingTagName = function(c) {
//skip everything until ">"
if (c === ">") {
this._state = TEXT;
this._sectionStart = this._index + 1;
}
};
Tokenizer.prototype._stateBeforeAttributeName = function(c) {
if (c === ">") {
this._cbs.onopentagend();
this._state = TEXT;
this._sectionStart = this._index + 1;
} else if (c === "/") {
this._state = IN_SELF_CLOSING_TAG;
} else if (!whitespace(c)) {
this._state = IN_ATTRIBUTE_NAME;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateInSelfClosingTag = function(c) {
if (c === ">") {
this._cbs.onselfclosingtag();
this._state = TEXT;
this._sectionStart = this._index + 1;
} else if (!whitespace(c)) {
this._state = BEFORE_ATTRIBUTE_NAME;
this._index--;
}
};
Tokenizer.prototype._stateInAttributeName = function(c) {
if (c === "=" || c === "/" || c === ">" || whitespace(c)) {
this._cbs.onattribname(this._getSection());
this._sectionStart = -1;
this._state = AFTER_ATTRIBUTE_NAME;
this._index--;
}
};
Tokenizer.prototype._stateAfterAttributeName = function(c) {
if (c === "=") {
this._state = BEFORE_ATTRIBUTE_VALUE;
} else if (c === "/" || c === ">") {
this._cbs.onattribend();
this._state = BEFORE_ATTRIBUTE_NAME;
this._index--;
} else if (!whitespace(c)) {
this._cbs.onattribend();
this._state = IN_ATTRIBUTE_NAME;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateBeforeAttributeValue = function(c) {
if (c === '"') {
this._state = IN_ATTRIBUTE_VALUE_DQ;
this._sectionStart = this._index + 1;
} else if (c === "'") {
this._state = IN_ATTRIBUTE_VALUE_SQ;
this._sectionStart = this._index + 1;
} else if (!whitespace(c)) {
this._state = IN_ATTRIBUTE_VALUE_NQ;
this._sectionStart = this._index;
this._index--; //reconsume token
}
};
Tokenizer.prototype._stateInAttributeValueDoubleQuotes = function(c) {
if (c === '"') {
this._emitToken("onattribdata");
this._cbs.onattribend();
this._state = BEFORE_ATTRIBUTE_NAME;
} else if (this._decodeEntities && c === "&") {
this._emitToken("onattribdata");
this._baseState = this._state;
this._state = BEFORE_ENTITY;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateInAttributeValueSingleQuotes = function(c) {
if (c === "'") {
this._emitToken("onattribdata");
this._cbs.onattribend();
this._state = BEFORE_ATTRIBUTE_NAME;
} else if (this._decodeEntities && c === "&") {
this._emitToken("onattribdata");
this._baseState = this._state;
this._state = BEFORE_ENTITY;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateInAttributeValueNoQuotes = function(c) {
if (whitespace(c) || c === ">") {
this._emitToken("onattribdata");
this._cbs.onattribend();
this._state = BEFORE_ATTRIBUTE_NAME;
this._index--;
} else if (this._decodeEntities && c === "&") {
this._emitToken("onattribdata");
this._baseState = this._state;
this._state = BEFORE_ENTITY;
this._sectionStart = this._index;
}
};
Tokenizer.prototype._stateBeforeDeclaration = function(c) {
this._state =
c === "["
? BEFORE_CDATA_1
: c === "-"
? BEFORE_COMMENT
: IN_DECLARATION;
};
Tokenizer.prototype._stateInDeclaration = function(c) {
if (c === ">") {
this._cbs.ondeclaration(this._getSection());
this._state = TEXT;
this._sectionStart = this._index + 1;
}
};
Tokenizer.prototype._stateInProcessingInstruction = function(c) {
if (c === ">") {
this._cbs.onprocessinginstruction(this._getSection());
this._state = TEXT;
this._sectionStart = this._index + 1;
}
};
Tokenizer.prototype._stateBeforeComment = function(c) {
if (c === "-") {
this._state = IN_COMMENT;
this._sectionStart = this._index + 1;
} else {
this._state = IN_DECLARATION;
}
};
Tokenizer.prototype._stateInComment = function(c) {
if (c === "-") this._state = AFTER_COMMENT_1;
};
Tokenizer.prototype._stateAfterComment1 = function(c) {
if (c === "-") {
this._state = AFTER_COMMENT_2;
} else {
this._state = IN_COMMENT;
}
};
Tokenizer.prototype._stateAfterComment2 = function(c) {
if (c === ">") {
//remove 2 trailing chars
this._cbs.oncomment(
this._buffer.substring(this._sectionStart, this._index - 2)
);
this._state = TEXT;
this._sectionStart = this._index + 1;
} else if (c !== "-") {
this._state = IN_COMMENT;
}
// else: stay in AFTER_COMMENT_2 (`--->`)
};
Tokenizer.prototype._stateBeforeCdata1 = ifElseState(
"C",
BEFORE_CDATA_2,
IN_DECLARATION
);
Tokenizer.prototype._stateBeforeCdata2 = ifElseState(
"D",
BEFORE_CDATA_3,
IN_DECLARATION
);
Tokenizer.prototype._stateBeforeCdata3 = ifElseState(
"A",
BEFORE_CDATA_4,
IN_DECLARATION
);
Tokenizer.prototype._stateBeforeCdata4 = ifElseState(
"T",
BEFORE_CDATA_5,
IN_DECLARATION
);
Tokenizer.prototype._stateBeforeCdata5 = ifElseState(
"A",
BEFORE_CDATA_6,
IN_DECLARATION
);
Tokenizer.prototype._stateBeforeCdata6 = function(c) {
if (c === "[") {
this._state = IN_CDATA;
this._sectionStart = this._index + 1;
} else {
this._state = IN_DECLARATION;
this._index--;
}
};
Tokenizer.prototype._stateInCdata = function(c) {
if (c === "]") this._state = AFTER_CDATA_1;
};
Tokenizer.prototype._stateAfterCdata1 = function(c) {
if (c === "]") this._state = AFTER_CDATA_2;
else this._state = IN_CDATA;
};
Tokenizer.prototype._stateAfterCdata2 = function(c) {
if (c === ">") {
//remove 2 trailing chars
this._cbs.oncdata(
this._buffer.substring(this._sectionStart, this._index - 2)
);
this._state = TEXT;
this._sectionStart = this._index + 1;
} else if (c !== "]") {
this._state = IN_CDATA;
}
//else: stay in AFTER_CDATA_2 (`]]]>`)
};
Tokenizer.prototype._stateBeforeSpecial = function(c) {
if (c === "c" || c === "C") {
this._state = BEFORE_SCRIPT_1;
} else if (c === "t" || c === "T") {
this._state = BEFORE_STYLE_1;
} else {
this._state = IN_TAG_NAME;
this._index--; //consume the token again
}
};
Tokenizer.prototype._stateBeforeSpecialEnd = function(c) {
if (this._special === SPECIAL_SCRIPT && (c === "c" || c === "C")) {
this._state = AFTER_SCRIPT_1;
} else if (this._special === SPECIAL_STYLE && (c === "t" || c === "T")) {
this._state = AFTER_STYLE_1;
} else this._state = TEXT;
};
Tokenizer.prototype._stateBeforeScript1 = consumeSpecialNameChar(
"R",
BEFORE_SCRIPT_2
);
Tokenizer.prototype._stateBeforeScript2 = consumeSpecialNameChar(
"I",
BEFORE_SCRIPT_3
);
Tokenizer.prototype._stateBeforeScript3 = consumeSpecialNameChar(
"P",
BEFORE_SCRIPT_4
);
Tokenizer.prototype._stateBeforeScript4 = consumeSpecialNameChar(
"T",
BEFORE_SCRIPT_5
);
Tokenizer.prototype._stateBeforeScript5 = function(c) {
if (c === "/" || c === ">" || whitespace(c)) {
this._special = SPECIAL_SCRIPT;
}
this._state = IN_TAG_NAME;
this._index--; //consume the token again
};
Tokenizer.prototype._stateAfterScript1 = ifElseState("R", AFTER_SCRIPT_2, TEXT);
Tokenizer.prototype._stateAfterScript2 = ifElseState("I", AFTER_SCRIPT_3, TEXT);
Tokenizer.prototype._stateAfterScript3 = ifElseState("P", AFTER_SCRIPT_4, TEXT);
Tokenizer.prototype._stateAfterScript4 = ifElseState("T", AFTER_SCRIPT_5, TEXT);
Tokenizer.prototype._stateAfterScript5 = function(c) {
if (c === ">" || whitespace(c)) {
this._special = SPECIAL_NONE;
this._state = IN_CLOSING_TAG_NAME;
this._sectionStart = this._index - 6;
this._index--; //reconsume the token
} else this._state = TEXT;
};
Tokenizer.prototype._stateBeforeStyle1 = consumeSpecialNameChar(
"Y",
BEFORE_STYLE_2
);
Tokenizer.prototype._stateBeforeStyle2 = consumeSpecialNameChar(
"L",
BEFORE_STYLE_3
);
Tokenizer.prototype._stateBeforeStyle3 = consumeSpecialNameChar(
"E",
BEFORE_STYLE_4
);
Tokenizer.prototype._stateBeforeStyle4 = function(c) {
if (c === "/" || c === ">" || whitespace(c)) {
this._special = SPECIAL_STYLE;
}
this._state = IN_TAG_NAME;
this._index--; //consume the token again
};
Tokenizer.prototype._stateAfterStyle1 = ifElseState("Y", AFTER_STYLE_2, TEXT);
Tokenizer.prototype._stateAfterStyle2 = ifElseState("L", AFTER_STYLE_3, TEXT);
Tokenizer.prototype._stateAfterStyle3 = ifElseState("E", AFTER_STYLE_4, TEXT);
Tokenizer.prototype._stateAfterStyle4 = function(c) {
if (c === ">" || whitespace(c)) {
this._special = SPECIAL_NONE;
this._state = IN_CLOSING_TAG_NAME;
this._sectionStart = this._index - 5;
this._index--; //reconsume the token
} else this._state = TEXT;
};
Tokenizer.prototype._stateBeforeEntity = ifElseState(
"#",
BEFORE_NUMERIC_ENTITY,
IN_NAMED_ENTITY
);
Tokenizer.prototype._stateBeforeNumericEntity = ifElseState(
"X",
IN_HEX_ENTITY,
IN_NUMERIC_ENTITY
);
//for entities terminated with a semicolon
Tokenizer.prototype._parseNamedEntityStrict = function() {
//offset = 1
if (this._sectionStart + 1 < this._index) {
var entity = this._buffer.substring(
this._sectionStart + 1,
this._index
),
map = this._xmlMode ? xmlMap : entityMap;
if (map.hasOwnProperty(entity)) {
this._emitPartial(map[entity]);
this._sectionStart = this._index + 1;
}
}
};
//parses legacy entities (without trailing semicolon)
Tokenizer.prototype._parseLegacyEntity = function() {
var start = this._sectionStart + 1,
limit = this._index - start;
if (limit > 6) limit = 6; //the max length of legacy entities is 6
while (limit >= 2) {
//the min length of legacy entities is 2
var entity = this._buffer.substr(start, limit);
if (legacyMap.hasOwnProperty(entity)) {
this._emitPartial(legacyMap[entity]);
this._sectionStart += limit + 1;
return;
} else {
limit--;
}
}
};
Tokenizer.prototype._stateInNamedEntity = function(c) {
if (c === ";") {
this._parseNamedEntityStrict();
if (this._sectionStart + 1 < this._index && !this._xmlMode) {
this._parseLegacyEntity();
}
this._state = this._baseState;
} else if (
(c < "a" || c > "z") &&
(c < "A" || c > "Z") &&
(c < "0" || c > "9")
) {
if (this._xmlMode);
else if (this._sectionStart + 1 === this._index);
else if (this._baseState !== TEXT) {
if (c !== "=") {
this._parseNamedEntityStrict();
}
} else {
this._parseLegacyEntity();
}
this._state = this._baseState;
this._index--;
}
};
Tokenizer.prototype._decodeNumericEntity = function(offset, base) {
var sectionStart = this._sectionStart + offset;
if (sectionStart !== this._index) {
//parse entity
var entity = this._buffer.substring(sectionStart, this._index);
var parsed = parseInt(entity, base);
this._emitPartial(decodeCodePoint(parsed));
this._sectionStart = this._index;
} else {
this._sectionStart--;
}
this._state = this._baseState;
};
Tokenizer.prototype._stateInNumericEntity = function(c) {
if (c === ";") {
this._decodeNumericEntity(2, 10);
this._sectionStart++;
} else if (c < "0" || c > "9") {
if (!this._xmlMode) {
this._decodeNumericEntity(2, 10);
} else {
this._state = this._baseState;
}
this._index--;
}
};
Tokenizer.prototype._stateInHexEntity = function(c) {
if (c === ";") {
this._decodeNumericEntity(3, 16);
this._sectionStart++;
} else if (
(c < "a" || c > "f") &&
(c < "A" || c > "F") &&
(c < "0" || c > "9")
) {
if (!this._xmlMode) {
this._decodeNumericEntity(3, 16);
} else {
this._state = this._baseState;
}
this._index--;
}
};
Tokenizer.prototype._cleanup = function() {
if (this._sectionStart < 0) {
this._buffer = "";
this._bufferOffset += this._index;
this._index = 0;
} else if (this._running) {
if (this._state === TEXT) {
if (this._sectionStart !== this._index) {
this._cbs.ontext(this._buffer.substr(this._sectionStart));
}
this._buffer = "";
this._bufferOffset += this._index;
this._index = 0;
} else if (this._sectionStart === this._index) {
//the section just started
this._buffer = "";
this._bufferOffset += this._index;
this._index = 0;
} else {
//remove everything unnecessary
this._buffer = this._buffer.substr(this._sectionStart);
this._index -= this._sectionStart;
this._bufferOffset += this._sectionStart;
}
this._sectionStart = 0;
}
};
//TODO make events conditional
Tokenizer.prototype.write = function(chunk) {
if (this._ended) this._cbs.onerror(Error(".write() after done!"));
this._buffer += chunk;
this._parse();
};
Tokenizer.prototype._parse = function() {
while (this._index < this._buffer.length && this._running) {
var c = this._buffer.charAt(this._index);
if (this._state === TEXT) {
this._stateText(c);
} else if (this._state === BEFORE_TAG_NAME) {
this._stateBeforeTagName(c);
} else if (this._state === IN_TAG_NAME) {
this._stateInTagName(c);
} else if (this._state === BEFORE_CLOSING_TAG_NAME) {
this._stateBeforeCloseingTagName(c);
} else if (this._state === IN_CLOSING_TAG_NAME) {
this._stateInCloseingTagName(c);
} else if (this._state === AFTER_CLOSING_TAG_NAME) {
this._stateAfterCloseingTagName(c);
} else if (this._state === IN_SELF_CLOSING_TAG) {
this._stateInSelfClosingTag(c);
} else if (this._state === BEFORE_ATTRIBUTE_NAME) {
/*
* attributes
*/
this._stateBeforeAttributeName(c);
} else if (this._state === IN_ATTRIBUTE_NAME) {
this._stateInAttributeName(c);
} else if (this._state === AFTER_ATTRIBUTE_NAME) {
this._stateAfterAttributeName(c);
} else if (this._state === BEFORE_ATTRIBUTE_VALUE) {
this._stateBeforeAttributeValue(c);
} else if (this._state === IN_ATTRIBUTE_VALUE_DQ) {
this._stateInAttributeValueDoubleQuotes(c);
} else if (this._state === IN_ATTRIBUTE_VALUE_SQ) {
this._stateInAttributeValueSingleQuotes(c);
} else if (this._state === IN_ATTRIBUTE_VALUE_NQ) {
this._stateInAttributeValueNoQuotes(c);
} else if (this._state === BEFORE_DECLARATION) {
/*
* declarations
*/
this._stateBeforeDeclaration(c);
} else if (this._state === IN_DECLARATION) {
this._stateInDeclaration(c);
} else if (this._state === IN_PROCESSING_INSTRUCTION) {
/*
* processing instructions
*/
this._stateInProcessingInstruction(c);
} else if (this._state === BEFORE_COMMENT) {
/*
* comments
*/
this._stateBeforeComment(c);
} else if (this._state === IN_COMMENT) {
this._stateInComment(c);
} else if (this._state === AFTER_COMMENT_1) {
this._stateAfterComment1(c);
} else if (this._state === AFTER_COMMENT_2) {
this._stateAfterComment2(c);
} else if (this._state === BEFORE_CDATA_1) {
/*
* cdata
*/
this._stateBeforeCdata1(c);
} else if (this._state === BEFORE_CDATA_2) {
this._stateBeforeCdata2(c);
} else if (this._state === BEFORE_CDATA_3) {
this._stateBeforeCdata3(c);
} else if (this._state === BEFORE_CDATA_4) {
this._stateBeforeCdata4(c);
} else if (this._state === BEFORE_CDATA_5) {
this._stateBeforeCdata5(c);
} else if (this._state === BEFORE_CDATA_6) {
this._stateBeforeCdata6(c);
} else if (this._state === IN_CDATA) {
this._stateInCdata(c);
} else if (this._state === AFTER_CDATA_1) {
this._stateAfterCdata1(c);
} else if (this._state === AFTER_CDATA_2) {
this._stateAfterCdata2(c);
} else if (this._state === BEFORE_SPECIAL) {
/*
* special tags
*/
this._stateBeforeSpecial(c);
} else if (this._state === BEFORE_SPECIAL_END) {
this._stateBeforeSpecialEnd(c);
} else if (this._state === BEFORE_SCRIPT_1) {
/*
* script
*/
this._stateBeforeScript1(c);
} else if (this._state === BEFORE_SCRIPT_2) {
this._stateBeforeScript2(c);
} else if (this._state === BEFORE_SCRIPT_3) {
this._stateBeforeScript3(c);
} else if (this._state === BEFORE_SCRIPT_4) {
this._stateBeforeScript4(c);
} else if (this._state === BEFORE_SCRIPT_5) {
this._stateBeforeScript5(c);
} else if (this._state === AFTER_SCRIPT_1) {
this._stateAfterScript1(c);
} else if (this._state === AFTER_SCRIPT_2) {
this._stateAfterScript2(c);
} else if (this._state === AFTER_SCRIPT_3) {
this._stateAfterScript3(c);
} else if (this._state === AFTER_SCRIPT_4) {
this._stateAfterScript4(c);
} else if (this._state === AFTER_SCRIPT_5) {
this._stateAfterScript5(c);
} else if (this._state === BEFORE_STYLE_1) {
/*
* style
*/
this._stateBeforeStyle1(c);
} else if (this._state === BEFORE_STYLE_2) {
this._stateBeforeStyle2(c);
} else if (this._state === BEFORE_STYLE_3) {
this._stateBeforeStyle3(c);
} else if (this._state === BEFORE_STYLE_4) {
this._stateBeforeStyle4(c);
} else if (this._state === AFTER_STYLE_1) {
this._stateAfterStyle1(c);
} else if (this._state === AFTER_STYLE_2) {
this._stateAfterStyle2(c);
} else if (this._state === AFTER_STYLE_3) {
this._stateAfterStyle3(c);
} else if (this._state === AFTER_STYLE_4) {
this._stateAfterStyle4(c);
} else if (this._state === BEFORE_ENTITY) {
/*
* entities
*/
this._stateBeforeEntity(c);
} else if (this._state === BEFORE_NUMERIC_ENTITY) {
this._stateBeforeNumericEntity(c);
} else if (this._state === IN_NAMED_ENTITY) {
this._stateInNamedEntity(c);
} else if (this._state === IN_NUMERIC_ENTITY) {
this._stateInNumericEntity(c);
} else if (this._state === IN_HEX_ENTITY) {
this._stateInHexEntity(c);
} else {
this._cbs.onerror(Error("unknown _state"), this._state);
}
this._index++;
}
this._cleanup();
};
Tokenizer.prototype.pause = function() {
this._running = false;
};
Tokenizer.prototype.resume = function() {
this._running = true;
if (this._index < this._buffer.length) {
this._parse();
}
if (this._ended) {
this._finish();
}
};
Tokenizer.prototype.end = function(chunk) {
if (this._ended) this._cbs.onerror(Error(".end() after done!"));
if (chunk) this.write(chunk);
this._ended = true;
if (this._running) this._finish();
};
Tokenizer.prototype._finish = function() {
//if there is remaining data, emit it in a reasonable way
if (this._sectionStart < this._index) {
this._handleTrailingData();
}
this._cbs.onend();
};
Tokenizer.prototype._handleTrailingData = function() {
var data = this._buffer.substr(this._sectionStart);
if (
this._state === IN_CDATA ||
this._state === AFTER_CDATA_1 ||
this._state === AFTER_CDATA_2
) {
this._cbs.oncdata(data);
} else if (
this._state === IN_COMMENT ||
this._state === AFTER_COMMENT_1 ||
this._state === AFTER_COMMENT_2
) {
this._cbs.oncomment(data);
} else if (this._state === IN_NAMED_ENTITY && !this._xmlMode) {
this._parseLegacyEntity();
if (this._sectionStart < this._index) {
this._state = this._baseState;
this._handleTrailingData();
}
} else if (this._state === IN_NUMERIC_ENTITY && !this._xmlMode) {
this._decodeNumericEntity(2, 10);
if (this._sectionStart < this._index) {
this._state = this._baseState;
this._handleTrailingData();
}
} else if (this._state === IN_HEX_ENTITY && !this._xmlMode) {
this._decodeNumericEntity(3, 16);
if (this._sectionStart < this._index) {
this._state = this._baseState;
this._handleTrailingData();
}
} else if (
this._state !== IN_TAG_NAME &&
this._state !== BEFORE_ATTRIBUTE_NAME &&
this._state !== BEFORE_ATTRIBUTE_VALUE &&
this._state !== AFTER_ATTRIBUTE_NAME &&
this._state !== IN_ATTRIBUTE_NAME &&
this._state !== IN_ATTRIBUTE_VALUE_SQ &&
this._state !== IN_ATTRIBUTE_VALUE_DQ &&
this._state !== IN_ATTRIBUTE_VALUE_NQ &&
this._state !== IN_CLOSING_TAG_NAME
) {
this._cbs.ontext(data);
}
//else, ignore remaining data
//TODO add a way to remove current tag
};
Tokenizer.prototype.reset = function() {
Tokenizer.call(
this,
{ xmlMode: this._xmlMode, decodeEntities: this._decodeEntities },
this._cbs
);
};
Tokenizer.prototype.getAbsoluteIndex = function() {
return this._bufferOffset + this._index;
};
Tokenizer.prototype._getSection = function() {
return this._buffer.substring(this._sectionStart, this._index);
};
Tokenizer.prototype._emitToken = function(name) {
this._cbs[name](this._getSection());
this._sectionStart = -1;
};
Tokenizer.prototype._emitPartial = function(value) {
if (this._baseState !== TEXT) {
this._cbs.onattribdata(value); //TODO implement the new event
} else {
this._cbs.ontext(value);
}
};

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module.exports = Stream;
var Parser = require("./Parser.js");
var WritableStream = require("readable-stream").Writable;
var StringDecoder = require("string_decoder").StringDecoder;
var Buffer = require("buffer").Buffer;
function Stream(cbs, options) {
var parser = (this._parser = new Parser(cbs, options));
var decoder = (this._decoder = new StringDecoder());
WritableStream.call(this, { decodeStrings: false });
this.once("finish", function() {
parser.end(decoder.end());
});
}
require("inherits")(Stream, WritableStream);
Stream.prototype._write = function(chunk, encoding, cb) {
if (chunk instanceof Buffer) chunk = this._decoder.write(chunk);
this._parser.write(chunk);
cb();
};

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var Parser = require("./Parser.js");
var DomHandler = require("domhandler");
function defineProp(name, value) {
delete module.exports[name];
module.exports[name] = value;
return value;
}
module.exports = {
Parser: Parser,
Tokenizer: require("./Tokenizer.js"),
ElementType: require("domelementtype"),
DomHandler: DomHandler,
get FeedHandler() {
return defineProp("FeedHandler", require("./FeedHandler.js"));
},
get Stream() {
return defineProp("Stream", require("./Stream.js"));
},
get WritableStream() {
return defineProp("WritableStream", require("./WritableStream.js"));
},
get ProxyHandler() {
return defineProp("ProxyHandler", require("./ProxyHandler.js"));
},
get DomUtils() {
return defineProp("DomUtils", require("domutils"));
},
get CollectingHandler() {
return defineProp(
"CollectingHandler",
require("./CollectingHandler.js")
);
},
// For legacy support
DefaultHandler: DomHandler,
get RssHandler() {
return defineProp("RssHandler", this.FeedHandler);
},
//helper methods
parseDOM: function(data, options) {
var handler = new DomHandler(options);
new Parser(handler, options).end(data);
return handler.dom;
},
parseFeed: function(feed, options) {
var handler = new module.exports.FeedHandler(options);
new Parser(handler, options).end(feed);
return handler.dom;
},
createDomStream: function(cb, options, elementCb) {
var handler = new DomHandler(cb, options, elementCb);
return new Parser(handler, options);
},
// List of all events that the parser emits
EVENTS: {
/* Format: eventname: number of arguments */
attribute: 2,
cdatastart: 0,
cdataend: 0,
text: 1,
processinginstruction: 2,
comment: 1,
commentend: 0,
closetag: 1,
opentag: 2,
opentagname: 1,
error: 1,
end: 0
}
};

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sudo: true
language: node_js
node_js:
- 8
script: npm run coveralls

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BACK_BACK/node_modules/htmlparser2/node_modules/entities/LICENSE generated vendored Executable file
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Copyright (c) Felix Böhm
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
THIS IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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var encode = require("./lib/encode.js"),
decode = require("./lib/decode.js");
exports.decode = function(data, level) {
return (!level || level <= 0 ? decode.XML : decode.HTML)(data);
};
exports.decodeStrict = function(data, level) {
return (!level || level <= 0 ? decode.XML : decode.HTMLStrict)(data);
};
exports.encode = function(data, level) {
return (!level || level <= 0 ? encode.XML : encode.HTML)(data);
};
exports.encodeXML = encode.XML;
exports.encodeHTML4 = exports.encodeHTML5 = exports.encodeHTML = encode.HTML;
exports.decodeXML = exports.decodeXMLStrict = decode.XML;
exports.decodeHTML4 = exports.decodeHTML5 = exports.decodeHTML = decode.HTML;
exports.decodeHTML4Strict = exports.decodeHTML5Strict = exports.decodeHTMLStrict = decode.HTMLStrict;
exports.escape = encode.escape;

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var entityMap = require("../maps/entities.json"),
legacyMap = require("../maps/legacy.json"),
xmlMap = require("../maps/xml.json"),
decodeCodePoint = require("./decode_codepoint.js");
var decodeXMLStrict = getStrictDecoder(xmlMap),
decodeHTMLStrict = getStrictDecoder(entityMap);
function getStrictDecoder(map) {
var keys = Object.keys(map).join("|"),
replace = getReplacer(map);
keys += "|#[xX][\\da-fA-F]+|#\\d+";
var re = new RegExp("&(?:" + keys + ");", "g");
return function(str) {
return String(str).replace(re, replace);
};
}
var decodeHTML = (function() {
var legacy = Object.keys(legacyMap).sort(sorter);
var keys = Object.keys(entityMap).sort(sorter);
for (var i = 0, j = 0; i < keys.length; i++) {
if (legacy[j] === keys[i]) {
keys[i] += ";?";
j++;
} else {
keys[i] += ";";
}
}
var re = new RegExp("&(?:" + keys.join("|") + "|#[xX][\\da-fA-F]+;?|#\\d+;?)", "g"),
replace = getReplacer(entityMap);
function replacer(str) {
if (str.substr(-1) !== ";") str += ";";
return replace(str);
}
//TODO consider creating a merged map
return function(str) {
return String(str).replace(re, replacer);
};
})();
function sorter(a, b) {
return a < b ? 1 : -1;
}
function getReplacer(map) {
return function replace(str) {
if (str.charAt(1) === "#") {
if (str.charAt(2) === "X" || str.charAt(2) === "x") {
return decodeCodePoint(parseInt(str.substr(3), 16));
}
return decodeCodePoint(parseInt(str.substr(2), 10));
}
return map[str.slice(1, -1)];
};
}
module.exports = {
XML: decodeXMLStrict,
HTML: decodeHTML,
HTMLStrict: decodeHTMLStrict
};

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var decodeMap = require("../maps/decode.json");
module.exports = decodeCodePoint;
// modified version of https://github.com/mathiasbynens/he/blob/master/src/he.js#L94-L119
function decodeCodePoint(codePoint) {
if ((codePoint >= 0xd800 && codePoint <= 0xdfff) || codePoint > 0x10ffff) {
return "\uFFFD";
}
if (codePoint in decodeMap) {
codePoint = decodeMap[codePoint];
}
var output = "";
if (codePoint > 0xffff) {
codePoint -= 0x10000;
output += String.fromCharCode(((codePoint >>> 10) & 0x3ff) | 0xd800);
codePoint = 0xdc00 | (codePoint & 0x3ff);
}
output += String.fromCharCode(codePoint);
return output;
}

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var inverseXML = getInverseObj(require("../maps/xml.json")),
xmlReplacer = getInverseReplacer(inverseXML);
exports.XML = getInverse(inverseXML, xmlReplacer);
var inverseHTML = getInverseObj(require("../maps/entities.json")),
htmlReplacer = getInverseReplacer(inverseHTML);
exports.HTML = getInverse(inverseHTML, htmlReplacer);
function getInverseObj(obj) {
return Object.keys(obj)
.sort()
.reduce(function(inverse, name) {
inverse[obj[name]] = "&" + name + ";";
return inverse;
}, {});
}
function getInverseReplacer(inverse) {
var single = [],
multiple = [];
Object.keys(inverse).forEach(function(k) {
if (k.length === 1) {
single.push("\\" + k);
} else {
multiple.push(k);
}
});
//TODO add ranges
multiple.unshift("[" + single.join("") + "]");
return new RegExp(multiple.join("|"), "g");
}
var re_nonASCII = /[^\0-\x7F]/g,
re_astralSymbols = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
function singleCharReplacer(c) {
return (
"&#x" +
c
.charCodeAt(0)
.toString(16)
.toUpperCase() +
";"
);
}
function astralReplacer(c) {
// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
var high = c.charCodeAt(0);
var low = c.charCodeAt(1);
var codePoint = (high - 0xd800) * 0x400 + low - 0xdc00 + 0x10000;
return "&#x" + codePoint.toString(16).toUpperCase() + ";";
}
function getInverse(inverse, re) {
function func(name) {
return inverse[name];
}
return function(data) {
return data
.replace(re, func)
.replace(re_astralSymbols, astralReplacer)
.replace(re_nonASCII, singleCharReplacer);
};
}
var re_xmlChars = getInverseReplacer(inverseXML);
function escapeXML(data) {
return data
.replace(re_xmlChars, singleCharReplacer)
.replace(re_astralSymbols, astralReplacer)
.replace(re_nonASCII, singleCharReplacer);
}
exports.escape = escapeXML;

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BACK_BACK/node_modules/htmlparser2/node_modules/entities/maps/decode.json generated vendored Executable file
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{"0":65533,"128":8364,"130":8218,"131":402,"132":8222,"133":8230,"134":8224,"135":8225,"136":710,"137":8240,"138":352,"139":8249,"140":338,"142":381,"145":8216,"146":8217,"147":8220,"148":8221,"149":8226,"150":8211,"151":8212,"152":732,"153":8482,"154":353,"155":8250,"156":339,"158":382,"159":376}

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BACK_BACK/node_modules/htmlparser2/node_modules/entities/maps/legacy.json generated vendored Executable file
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{"Aacute":"\u00C1","aacute":"\u00E1","Acirc":"\u00C2","acirc":"\u00E2","acute":"\u00B4","AElig":"\u00C6","aelig":"\u00E6","Agrave":"\u00C0","agrave":"\u00E0","amp":"&","AMP":"&","Aring":"\u00C5","aring":"\u00E5","Atilde":"\u00C3","atilde":"\u00E3","Auml":"\u00C4","auml":"\u00E4","brvbar":"\u00A6","Ccedil":"\u00C7","ccedil":"\u00E7","cedil":"\u00B8","cent":"\u00A2","copy":"\u00A9","COPY":"\u00A9","curren":"\u00A4","deg":"\u00B0","divide":"\u00F7","Eacute":"\u00C9","eacute":"\u00E9","Ecirc":"\u00CA","ecirc":"\u00EA","Egrave":"\u00C8","egrave":"\u00E8","ETH":"\u00D0","eth":"\u00F0","Euml":"\u00CB","euml":"\u00EB","frac12":"\u00BD","frac14":"\u00BC","frac34":"\u00BE","gt":">","GT":">","Iacute":"\u00CD","iacute":"\u00ED","Icirc":"\u00CE","icirc":"\u00EE","iexcl":"\u00A1","Igrave":"\u00CC","igrave":"\u00EC","iquest":"\u00BF","Iuml":"\u00CF","iuml":"\u00EF","laquo":"\u00AB","lt":"<","LT":"<","macr":"\u00AF","micro":"\u00B5","middot":"\u00B7","nbsp":"\u00A0","not":"\u00AC","Ntilde":"\u00D1","ntilde":"\u00F1","Oacute":"\u00D3","oacute":"\u00F3","Ocirc":"\u00D4","ocirc":"\u00F4","Ograve":"\u00D2","ograve":"\u00F2","ordf":"\u00AA","ordm":"\u00BA","Oslash":"\u00D8","oslash":"\u00F8","Otilde":"\u00D5","otilde":"\u00F5","Ouml":"\u00D6","ouml":"\u00F6","para":"\u00B6","plusmn":"\u00B1","pound":"\u00A3","quot":"\"","QUOT":"\"","raquo":"\u00BB","reg":"\u00AE","REG":"\u00AE","sect":"\u00A7","shy":"\u00AD","sup1":"\u00B9","sup2":"\u00B2","sup3":"\u00B3","szlig":"\u00DF","THORN":"\u00DE","thorn":"\u00FE","times":"\u00D7","Uacute":"\u00DA","uacute":"\u00FA","Ucirc":"\u00DB","ucirc":"\u00FB","Ugrave":"\u00D9","ugrave":"\u00F9","uml":"\u00A8","Uuml":"\u00DC","uuml":"\u00FC","Yacute":"\u00DD","yacute":"\u00FD","yen":"\u00A5","yuml":"\u00FF"}

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BACK_BACK/node_modules/htmlparser2/node_modules/entities/maps/xml.json generated vendored Executable file
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{"amp":"&","apos":"'","gt":">","lt":"<","quot":"\""}

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{
"name": "entities",
"version": "1.1.2",
"description": "Encode & decode XML/HTML entities with ease",
"author": "Felix Boehm <me@feedic.com>",
"keywords": [
"html",
"xml",
"entity",
"decoding",
"encoding"
],
"main": "./index.js",
"directories": {
"test": "test"
},
"devDependencies": {
"mocha": "^5.0.1",
"mocha-lcov-reporter": "*",
"coveralls": "*",
"istanbul": "*",
"jshint": "2"
},
"scripts": {
"test": "mocha && npm run lint",
"lint": "jshint index.js lib/*.js test/*.js",
"lcov": "istanbul cover _mocha --report lcovonly -- -R spec",
"coveralls": "npm run lint && npm run lcov && (cat coverage/lcov.info | coveralls || exit 0)"
},
"repository": {
"type": "git",
"url": "git://github.com/fb55/entities.git"
},
"license": "BSD-2-Clause",
"jshintConfig": {
"eqeqeq": true,
"freeze": true,
"latedef": "nofunc",
"noarg": true,
"nonbsp": true,
"quotmark": "double",
"undef": true,
"unused": true,
"trailing": true,
"eqnull": true,
"proto": true,
"smarttabs": true,
"node": true,
"globals": {
"describe": true,
"it": true
}
},
"prettier": {
"tabWidth": 4
}
}

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# entities [![NPM version](http://img.shields.io/npm/v/entities.svg)](https://npmjs.org/package/entities) [![Downloads](https://img.shields.io/npm/dm/entities.svg)](https://npmjs.org/package/entities) [![Build Status](http://img.shields.io/travis/fb55/entities.svg)](http://travis-ci.org/fb55/entities) [![Coverage](http://img.shields.io/coveralls/fb55/entities.svg)](https://coveralls.io/r/fb55/entities)
En- & decoder for XML/HTML entities.
## How to…
### …install `entities`
npm i entities
### …use `entities`
```javascript
var entities = require("entities");
//encoding
entities.encodeXML("&#38;"); // "&amp;#38;"
entities.encodeHTML("&#38;"); // "&amp;&num;38&semi;"
//decoding
entities.decodeXML("asdf &amp; &#xFF; &#xFC; &apos;"); // "asdf & ÿ ü '"
entities.decodeHTML("asdf &amp; &yuml; &uuml; &apos;"); // "asdf & ÿ ü '"
```
<!-- TODO extend API -->
---
License: BSD-2-Clause

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--check-leaks
--reporter spec

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var assert = require("assert"),
path = require("path"),
entities = require("../");
describe("Encode->decode test", function() {
var testcases = [
{
input: "asdf & ÿ ü '",
xml: "asdf &amp; &#xFF; &#xFC; &apos;",
html: "asdf &amp; &yuml; &uuml; &apos;"
},
{
input: "&#38;",
xml: "&amp;#38;",
html: "&amp;&num;38&semi;"
}
];
testcases.forEach(function(tc) {
var encodedXML = entities.encodeXML(tc.input);
it("should XML encode " + tc.input, function() {
assert.equal(encodedXML, tc.xml);
});
it("should default to XML encode " + tc.input, function() {
assert.equal(entities.encode(tc.input), tc.xml);
});
it("should XML decode " + encodedXML, function() {
assert.equal(entities.decodeXML(encodedXML), tc.input);
});
it("should default to XML encode " + encodedXML, function() {
assert.equal(entities.decode(encodedXML), tc.input);
});
it("should default strict to XML encode " + encodedXML, function() {
assert.equal(entities.decodeStrict(encodedXML), tc.input);
});
var encodedHTML5 = entities.encodeHTML5(tc.input);
it("should HTML5 encode " + tc.input, function() {
assert.equal(encodedHTML5, tc.html);
});
it("should HTML5 decode " + encodedHTML5, function() {
assert.equal(entities.decodeHTML(encodedHTML5), tc.input);
});
});
it("should encode data URIs (issue 16)", function() {
var data = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAALAAABAAEAAAIBRAA7";
assert.equal(entities.decode(entities.encode(data)), data);
});
});
describe("Decode test", function() {
var testcases = [
{ input: "&amp;amp;", output: "&amp;" },
{ input: "&amp;#38;", output: "&#38;" },
{ input: "&amp;#x26;", output: "&#x26;" },
{ input: "&amp;#X26;", output: "&#X26;" },
{ input: "&#38;#38;", output: "&#38;" },
{ input: "&#x26;#38;", output: "&#38;" },
{ input: "&#X26;#38;", output: "&#38;" },
{ input: "&#x3a;", output: ":" },
{ input: "&#x3A;", output: ":" },
{ input: "&#X3a;", output: ":" },
{ input: "&#X3A;", output: ":" }
];
testcases.forEach(function(tc) {
it("should XML decode " + tc.input, function() {
assert.equal(entities.decodeXML(tc.input), tc.output);
});
it("should HTML4 decode " + tc.input, function() {
assert.equal(entities.decodeHTML(tc.input), tc.output);
});
it("should HTML5 decode " + tc.input, function() {
assert.equal(entities.decodeHTML(tc.input), tc.output);
});
});
});
var levels = ["xml", "entities"];
describe("Documents", function() {
levels
.map(function(n) {
return path.join("..", "maps", n);
})
.map(require)
.forEach(function(doc, i) {
describe("Decode", function() {
it(levels[i], function() {
Object.keys(doc).forEach(function(e) {
for (var l = i; l < levels.length; l++) {
assert.equal(entities.decode("&" + e + ";", l), doc[e]);
}
});
});
});
describe("Decode strict", function() {
it(levels[i], function() {
Object.keys(doc).forEach(function(e) {
for (var l = i; l < levels.length; l++) {
assert.equal(entities.decodeStrict("&" + e + ";", l), doc[e]);
}
});
});
});
describe("Encode", function() {
it(levels[i], function() {
Object.keys(doc).forEach(function(e) {
for (var l = i; l < levels.length; l++) {
assert.equal(entities.decode(entities.encode(doc[e], l), l), doc[e]);
}
});
});
});
});
var legacy = require("../maps/legacy.json");
describe("Legacy", function() {
it("should decode", runLegacy);
});
function runLegacy() {
Object.keys(legacy).forEach(function(e) {
assert.equal(entities.decodeHTML("&" + e), legacy[e]);
});
}
});
var astral = {
"1D306": "\uD834\uDF06",
"1D11E": "\uD834\uDD1E"
};
var astralSpecial = {
"80": "\u20AC",
"110000": "\uFFFD"
};
describe("Astral entities", function() {
Object.keys(astral).forEach(function(c) {
it("should decode " + astral[c], function() {
assert.equal(entities.decode("&#x" + c + ";"), astral[c]);
});
it("should encode " + astral[c], function() {
assert.equal(entities.encode(astral[c]), "&#x" + c + ";");
});
it("should escape " + astral[c], function() {
assert.equal(entities.escape(astral[c]), "&#x" + c + ";");
});
});
Object.keys(astralSpecial).forEach(function(c) {
it("special should decode \\u" + c, function() {
assert.equal(entities.decode("&#x" + c + ";"), astralSpecial[c]);
});
});
});
describe("Escape", function() {
it("should always decode ASCII chars", function() {
for (var i = 0; i < 0x7f; i++) {
var c = String.fromCharCode(i);
assert.equal(entities.decodeXML(entities.escape(c)), c);
}
});
});

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# Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
* (a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
* (b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
* (c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
* (d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
## Moderation Policy
The [Node.js Moderation Policy] applies to this WG.
## Code of Conduct
The [Node.js Code of Conduct][] applies to this WG.
[Node.js Code of Conduct]:
https://github.com/nodejs/node/blob/master/CODE_OF_CONDUCT.md
[Node.js Moderation Policy]:
https://github.com/nodejs/TSC/blob/master/Moderation-Policy.md

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### Streams Working Group
The Node.js Streams is jointly governed by a Working Group
(WG)
that is responsible for high-level guidance of the project.
The WG has final authority over this project including:
* Technical direction
* Project governance and process (including this policy)
* Contribution policy
* GitHub repository hosting
* Conduct guidelines
* Maintaining the list of additional Collaborators
For the current list of WG members, see the project
[README.md](./README.md#current-project-team-members).
### Collaborators
The readable-stream GitHub repository is
maintained by the WG and additional Collaborators who are added by the
WG on an ongoing basis.
Individuals making significant and valuable contributions are made
Collaborators and given commit-access to the project. These
individuals are identified by the WG and their addition as
Collaborators is discussed during the WG meeting.
_Note:_ If you make a significant contribution and are not considered
for commit-access log an issue or contact a WG member directly and it
will be brought up in the next WG meeting.
Modifications of the contents of the readable-stream repository are
made on
a collaborative basis. Anybody with a GitHub account may propose a
modification via pull request and it will be considered by the project
Collaborators. All pull requests must be reviewed and accepted by a
Collaborator with sufficient expertise who is able to take full
responsibility for the change. In the case of pull requests proposed
by an existing Collaborator, an additional Collaborator is required
for sign-off. Consensus should be sought if additional Collaborators
participate and there is disagreement around a particular
modification. See _Consensus Seeking Process_ below for further detail
on the consensus model used for governance.
Collaborators may opt to elevate significant or controversial
modifications, or modifications that have not found consensus to the
WG for discussion by assigning the ***WG-agenda*** tag to a pull
request or issue. The WG should serve as the final arbiter where
required.
For the current list of Collaborators, see the project
[README.md](./README.md#members).
### WG Membership
WG seats are not time-limited. There is no fixed size of the WG.
However, the expected target is between 6 and 12, to ensure adequate
coverage of important areas of expertise, balanced with the ability to
make decisions efficiently.
There is no specific set of requirements or qualifications for WG
membership beyond these rules.
The WG may add additional members to the WG by unanimous consensus.
A WG member may be removed from the WG by voluntary resignation, or by
unanimous consensus of all other WG members.
Changes to WG membership should be posted in the agenda, and may be
suggested as any other agenda item (see "WG Meetings" below).
If an addition or removal is proposed during a meeting, and the full
WG is not in attendance to participate, then the addition or removal
is added to the agenda for the subsequent meeting. This is to ensure
that all members are given the opportunity to participate in all
membership decisions. If a WG member is unable to attend a meeting
where a planned membership decision is being made, then their consent
is assumed.
No more than 1/3 of the WG members may be affiliated with the same
employer. If removal or resignation of a WG member, or a change of
employment by a WG member, creates a situation where more than 1/3 of
the WG membership shares an employer, then the situation must be
immediately remedied by the resignation or removal of one or more WG
members affiliated with the over-represented employer(s).
### WG Meetings
The WG meets occasionally on a Google Hangout On Air. A designated moderator
approved by the WG runs the meeting. Each meeting should be
published to YouTube.
Items are added to the WG agenda that are considered contentious or
are modifications of governance, contribution policy, WG membership,
or release process.
The intention of the agenda is not to approve or review all patches;
that should happen continuously on GitHub and be handled by the larger
group of Collaborators.
Any community member or contributor can ask that something be added to
the next meeting's agenda by logging a GitHub Issue. Any Collaborator,
WG member or the moderator can add the item to the agenda by adding
the ***WG-agenda*** tag to the issue.
Prior to each WG meeting the moderator will share the Agenda with
members of the WG. WG members can add any items they like to the
agenda at the beginning of each meeting. The moderator and the WG
cannot veto or remove items.
The WG may invite persons or representatives from certain projects to
participate in a non-voting capacity.
The moderator is responsible for summarizing the discussion of each
agenda item and sends it as a pull request after the meeting.
### Consensus Seeking Process
The WG follows a
[Consensus
Seeking](http://en.wikipedia.org/wiki/Consensus-seeking_decision-making)
decision-making model.
When an agenda item has appeared to reach a consensus the moderator
will ask "Does anyone object?" as a final call for dissent from the
consensus.
If an agenda item cannot reach a consensus a WG member can call for
either a closing vote or a vote to table the issue to the next
meeting. The call for a vote must be seconded by a majority of the WG
or else the discussion will continue. Simple majority wins.
Note that changes to WG membership require a majority consensus. See
"WG Membership" above.

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Node.js is licensed for use as follows:
"""
Copyright Node.js contributors. All rights reserved.
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.
"""
This license applies to parts of Node.js originating from the
https://github.com/joyent/node repository:
"""
Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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.
"""

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# readable-stream
***Node.js core streams for userland*** [![Build Status](https://travis-ci.com/nodejs/readable-stream.svg?branch=master)](https://travis-ci.com/nodejs/readable-stream)
[![NPM](https://nodei.co/npm/readable-stream.png?downloads=true&downloadRank=true)](https://nodei.co/npm/readable-stream/)
[![NPM](https://nodei.co/npm-dl/readable-stream.png?&months=6&height=3)](https://nodei.co/npm/readable-stream/)
[![Sauce Test Status](https://saucelabs.com/browser-matrix/readabe-stream.svg)](https://saucelabs.com/u/readabe-stream)
```bash
npm install --save readable-stream
```
This package is a mirror of the streams implementations in Node.js.
Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.18.1/docs/api/stream.html).
If you want to guarantee a stable streams base, regardless of what version of
Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html).
As of version 2.0.0 **readable-stream** uses semantic versioning.
## Version 3.x.x
v3.x.x of `readable-stream` is a cut from Node 10. This version supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows:
1. Error codes: https://github.com/nodejs/node/pull/13310,
https://github.com/nodejs/node/pull/13291,
https://github.com/nodejs/node/pull/16589,
https://github.com/nodejs/node/pull/15042,
https://github.com/nodejs/node/pull/15665,
https://github.com/nodejs/readable-stream/pull/344
2. 'readable' have precedence over flowing
https://github.com/nodejs/node/pull/18994
3. make virtual methods errors consistent
https://github.com/nodejs/node/pull/18813
4. updated streams error handling
https://github.com/nodejs/node/pull/18438
5. writable.end should return this.
https://github.com/nodejs/node/pull/18780
6. readable continues to read when push('')
https://github.com/nodejs/node/pull/18211
7. add custom inspect to BufferList
https://github.com/nodejs/node/pull/17907
8. always defer 'readable' with nextTick
https://github.com/nodejs/node/pull/17979
## Version 2.x.x
v2.x.x of `readable-stream` is a cut of the stream module from Node 8 (there have been no semver-major changes from Node 4 to 8). This version supports all Node.js versions from 0.8, as well as evergreen browsers and IE 10 & 11.
### Big Thanks
Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce]
# Usage
You can swap your `require('stream')` with `require('readable-stream')`
without any changes, if you are just using one of the main classes and
functions.
```js
const {
Readable,
Writable,
Transform,
Duplex,
pipeline,
finished
} = require('readable-stream')
````
Note that `require('stream')` will return `Stream`, while
`require('readable-stream')` will return `Readable`. We discourage using
whatever is exported directly, but rather use one of the properties as
shown in the example above.
# Streams Working Group
`readable-stream` is maintained by the Streams Working Group, which
oversees the development and maintenance of the Streams API within
Node.js. The responsibilities of the Streams Working Group include:
* Addressing stream issues on the Node.js issue tracker.
* Authoring and editing stream documentation within the Node.js project.
* Reviewing changes to stream subclasses within the Node.js project.
* Redirecting changes to streams from the Node.js project to this
project.
* Assisting in the implementation of stream providers within Node.js.
* Recommending versions of `readable-stream` to be included in Node.js.
* Messaging about the future of streams to give the community advance
notice of changes.
<a name="members"></a>
## Team Members
* **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt;
- Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242
* **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt;
* **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt;
- Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E
* **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt;
* **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt;
[sauce]: https://saucelabs.com

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'use strict';
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
var codes = {};
function createErrorType(code, message, Base) {
if (!Base) {
Base = Error;
}
function getMessage(arg1, arg2, arg3) {
if (typeof message === 'string') {
return message;
} else {
return message(arg1, arg2, arg3);
}
}
var NodeError =
/*#__PURE__*/
function (_Base) {
_inheritsLoose(NodeError, _Base);
function NodeError(arg1, arg2, arg3) {
return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
}
return NodeError;
}(Base);
NodeError.prototype.name = Base.name;
NodeError.prototype.code = code;
codes[code] = NodeError;
} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
function oneOf(expected, thing) {
if (Array.isArray(expected)) {
var len = expected.length;
expected = expected.map(function (i) {
return String(i);
});
if (len > 2) {
return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
} else if (len === 2) {
return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
} else {
return "of ".concat(thing, " ").concat(expected[0]);
}
} else {
return "of ".concat(thing, " ").concat(String(expected));
}
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
function startsWith(str, search, pos) {
return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
function endsWith(str, search, this_len) {
if (this_len === undefined || this_len > str.length) {
this_len = str.length;
}
return str.substring(this_len - search.length, this_len) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
function includes(str, search, start) {
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > str.length) {
return false;
} else {
return str.indexOf(search, start) !== -1;
}
}
createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
return 'The value "' + value + '" is invalid for option "' + name + '"';
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
// determiner: 'must be' or 'must not be'
var determiner;
if (typeof expected === 'string' && startsWith(expected, 'not ')) {
determiner = 'must not be';
expected = expected.replace(/^not /, '');
} else {
determiner = 'must be';
}
var msg;
if (endsWith(name, ' argument')) {
// For cases like 'first argument'
msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
} else {
var type = includes(name, '.') ? 'property' : 'argument';
msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
}
msg += ". Received type ".concat(typeof actual);
return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
return 'The ' + name + ' method is not implemented';
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
return 'Unknown encoding: ' + arg;
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;

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'use strict';
const codes = {};
function createErrorType(code, message, Base) {
if (!Base) {
Base = Error
}
function getMessage (arg1, arg2, arg3) {
if (typeof message === 'string') {
return message
} else {
return message(arg1, arg2, arg3)
}
}
class NodeError extends Base {
constructor (arg1, arg2, arg3) {
super(getMessage(arg1, arg2, arg3));
}
}
NodeError.prototype.name = Base.name;
NodeError.prototype.code = code;
codes[code] = NodeError;
}
// https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
function oneOf(expected, thing) {
if (Array.isArray(expected)) {
const len = expected.length;
expected = expected.map((i) => String(i));
if (len > 2) {
return `one of ${thing} ${expected.slice(0, len - 1).join(', ')}, or ` +
expected[len - 1];
} else if (len === 2) {
return `one of ${thing} ${expected[0]} or ${expected[1]}`;
} else {
return `of ${thing} ${expected[0]}`;
}
} else {
return `of ${thing} ${String(expected)}`;
}
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
function startsWith(str, search, pos) {
return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
function endsWith(str, search, this_len) {
if (this_len === undefined || this_len > str.length) {
this_len = str.length;
}
return str.substring(this_len - search.length, this_len) === search;
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
function includes(str, search, start) {
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > str.length) {
return false;
} else {
return str.indexOf(search, start) !== -1;
}
}
createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
return 'The value "' + value + '" is invalid for option "' + name + '"'
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
// determiner: 'must be' or 'must not be'
let determiner;
if (typeof expected === 'string' && startsWith(expected, 'not ')) {
determiner = 'must not be';
expected = expected.replace(/^not /, '');
} else {
determiner = 'must be';
}
let msg;
if (endsWith(name, ' argument')) {
// For cases like 'first argument'
msg = `The ${name} ${determiner} ${oneOf(expected, 'type')}`;
} else {
const type = includes(name, '.') ? 'property' : 'argument';
msg = `The "${name}" ${type} ${determiner} ${oneOf(expected, 'type')}`;
}
msg += `. Received type ${typeof actual}`;
return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
return 'The ' + name + ' method is not implemented'
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
return 'Unknown encoding: ' + arg
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;

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'use strict'
var experimentalWarnings = new Set();
function emitExperimentalWarning(feature) {
if (experimentalWarnings.has(feature)) return;
var msg = feature + ' is an experimental feature. This feature could ' +
'change at any time';
experimentalWarnings.add(feature);
process.emitWarning(msg, 'ExperimentalWarning');
}
function noop() {}
module.exports.emitExperimentalWarning = process.emitWarning
? emitExperimentalWarning
: noop;

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// 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 objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) keys.push(key);
return keys;
};
/*</replacement>*/
module.exports = Duplex;
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
require('inherits')(Duplex, Readable);
{
// Allow the keys array to be GC'ed.
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);
this.allowHalfOpen = true;
if (options) {
if (options.readable === false) this.readable = false;
if (options.writable === false) this.writable = false;
if (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 get() {
return this._writableState.highWaterMark;
}
});
Object.defineProperty(Duplex.prototype, 'writableBuffer', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState && this._writableState.getBuffer();
}
});
Object.defineProperty(Duplex.prototype, 'writableLength', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.length;
}
});
// the no-half-open enforcer
function onend() {
// If the writable side ended, then we're ok.
if (this._writableState.ended) return;
// no more data can be written.
// But allow more writes to happen in this tick.
process.nextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
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;
}
});

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// 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');
require('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);
};

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// 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 _require$codes = require('../errors').codes,
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;
var Duplex = require('./_stream_duplex');
require('inherits')(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (cb === null) {
return this.emit('error', new ERR_MULTIPLE_CALLBACK());
}
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._readableState.destroyed) {
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) {
cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
};
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.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) {
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
});
};
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);
// TODO(BridgeAR): Write a test for these two error cases
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
return stream.push(null);
}

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// 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';
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 Duplex;
/*</replacement>*/
Writable.WritableState = WritableState;
/*<replacement>*/
var internalUtil = {
deprecate: require('util-deprecate')
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
var Buffer = require('buffer').Buffer;
var OurUint8Array = (typeof global !== 'undefined' ? global : typeof window !== 'undefined' ? window : typeof self !== 'undefined' ? self : {}).Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
var destroyImpl = require('./internal/streams/destroy');
var _require = require('./internal/streams/state'),
getHighWaterMark = _require.getHighWaterMark;
var _require$codes = require('../errors').codes,
ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE,
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE,
ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED,
ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES,
ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END,
ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING;
var errorOrDestroy = destroyImpl.errorOrDestroy;
require('inherits')(Writable, Stream);
function nop() {}
function WritableState(options, stream, isDuplex) {
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,
// e.g. options.readableObjectMode vs. options.writableObjectMode, etc.
if (typeof isDuplex !== 'boolean') 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()
this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex);
// 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;
// Should close be emitted on destroy. Defaults to true.
this.emitClose = options.emitClose !== false;
// Should .destroy() be called after 'finish' (and potentially 'end')
this.autoDestroy = !!options.autoDestroy;
// 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 writableStateBufferGetter() {
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 value(object) {
if (realHasInstance.call(this, object)) return true;
if (this !== Writable) return false;
return object && object._writableState instanceof WritableState;
}
});
} else {
realHasInstance = function realHasInstance(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.
// Checking for a Stream.Duplex instance is faster here instead of inside
// the WritableState constructor, at least with V8 6.5
var isDuplex = this instanceof Duplex;
if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options);
this._writableState = new WritableState(options, this, isDuplex);
// 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 () {
errorOrDestroy(this, new ERR_STREAM_CANNOT_PIPE());
};
function writeAfterEnd(stream, cb) {
var er = new ERR_STREAM_WRITE_AFTER_END();
// TODO: defer error events consistently everywhere, not just the cb
errorOrDestroy(stream, er);
process.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 er;
if (chunk === null) {
er = new ERR_STREAM_NULL_VALUES();
} else if (typeof chunk !== 'string' && !state.objectMode) {
er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk);
}
if (er) {
errorOrDestroy(stream, er);
process.nextTick(cb, er);
return false;
}
return true;
}
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.ending) 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 () {
this._writableState.corked++;
};
Writable.prototype.uncork = function () {
var state = this._writableState;
if (state.corked) {
state.corked--;
if (!state.writing && !state.corked && !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 ERR_UNKNOWN_ENCODING(encoding);
this._writableState.defaultEncoding = encoding;
return this;
};
Object.defineProperty(Writable.prototype, 'writableBuffer', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState && this._writableState.getBuffer();
}
});
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 get() {
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 (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else 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
process.nextTick(cb, er);
// this can emit finish, and it will always happen
// after error
process.nextTick(finishMaybe, stream, state);
stream._writableState.errorEmitted = true;
errorOrDestroy(stream, er);
} else {
// the caller expect this to happen before if
// it is async
cb(er);
stream._writableState.errorEmitted = true;
errorOrDestroy(stream, 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;
if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK();
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) || stream.destroyed;
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
clearBuffer(stream, state);
}
if (sync) {
process.nextTick(afterWrite, stream, state, finished, cb);
} 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 ERR_METHOD_NOT_IMPLEMENTED('_write()'));
};
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) endWritable(this, state, cb);
return this;
};
Object.defineProperty(Writable.prototype, 'writableLength', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.length;
}
});
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) {
errorOrDestroy(stream, 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.destroyed) {
state.pendingcb++;
state.finalCalled = true;
process.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');
if (state.autoDestroy) {
// In case of duplex streams we need a way to detect
// if the readable side is ready for autoDestroy as well
var rState = stream._readableState;
if (!rState || rState.autoDestroy && rState.endEmitted) {
stream.destroy();
}
}
}
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished) process.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;
}
// reuse the free corkReq.
state.corkedRequestsFree.next = corkReq;
}
Object.defineProperty(Writable.prototype, 'destroyed', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
if (this._writableState === undefined) {
return false;
}
return this._writableState.destroyed;
},
set: function set(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) {
cb(err);
};

180
BACK_BACK/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/async_iterator.js generated vendored Executable file
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'use strict';
var _Object$setPrototypeO;
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return typeof key === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (typeof input !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (typeof res !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
var finished = require('./end-of-stream');
var kLastResolve = Symbol('lastResolve');
var kLastReject = Symbol('lastReject');
var kError = Symbol('error');
var kEnded = Symbol('ended');
var kLastPromise = Symbol('lastPromise');
var kHandlePromise = Symbol('handlePromise');
var kStream = Symbol('stream');
function createIterResult(value, done) {
return {
value: value,
done: done
};
}
function readAndResolve(iter) {
var resolve = iter[kLastResolve];
if (resolve !== null) {
var data = iter[kStream].read();
// we defer if data is null
// we can be expecting either 'end' or
// 'error'
if (data !== null) {
iter[kLastPromise] = null;
iter[kLastResolve] = null;
iter[kLastReject] = null;
resolve(createIterResult(data, false));
}
}
}
function onReadable(iter) {
// we wait for the next tick, because it might
// emit an error with process.nextTick
process.nextTick(readAndResolve, iter);
}
function wrapForNext(lastPromise, iter) {
return function (resolve, reject) {
lastPromise.then(function () {
if (iter[kEnded]) {
resolve(createIterResult(undefined, true));
return;
}
iter[kHandlePromise](resolve, reject);
}, reject);
};
}
var AsyncIteratorPrototype = Object.getPrototypeOf(function () {});
var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = {
get stream() {
return this[kStream];
},
next: function next() {
var _this = this;
// if we have detected an error in the meanwhile
// reject straight away
var error = this[kError];
if (error !== null) {
return Promise.reject(error);
}
if (this[kEnded]) {
return Promise.resolve(createIterResult(undefined, true));
}
if (this[kStream].destroyed) {
// We need to defer via nextTick because if .destroy(err) is
// called, the error will be emitted via nextTick, and
// we cannot guarantee that there is no error lingering around
// waiting to be emitted.
return new Promise(function (resolve, reject) {
process.nextTick(function () {
if (_this[kError]) {
reject(_this[kError]);
} else {
resolve(createIterResult(undefined, true));
}
});
});
}
// if we have multiple next() calls
// we will wait for the previous Promise to finish
// this logic is optimized to support for await loops,
// where next() is only called once at a time
var lastPromise = this[kLastPromise];
var promise;
if (lastPromise) {
promise = new Promise(wrapForNext(lastPromise, this));
} else {
// fast path needed to support multiple this.push()
// without triggering the next() queue
var data = this[kStream].read();
if (data !== null) {
return Promise.resolve(createIterResult(data, false));
}
promise = new Promise(this[kHandlePromise]);
}
this[kLastPromise] = promise;
return promise;
}
}, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () {
return this;
}), _defineProperty(_Object$setPrototypeO, "return", function _return() {
var _this2 = this;
// destroy(err, cb) is a private API
// we can guarantee we have that here, because we control the
// Readable class this is attached to
return new Promise(function (resolve, reject) {
_this2[kStream].destroy(null, function (err) {
if (err) {
reject(err);
return;
}
resolve(createIterResult(undefined, true));
});
});
}), _Object$setPrototypeO), AsyncIteratorPrototype);
var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) {
var _Object$create;
var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, {
value: stream,
writable: true
}), _defineProperty(_Object$create, kLastResolve, {
value: null,
writable: true
}), _defineProperty(_Object$create, kLastReject, {
value: null,
writable: true
}), _defineProperty(_Object$create, kError, {
value: null,
writable: true
}), _defineProperty(_Object$create, kEnded, {
value: stream._readableState.endEmitted,
writable: true
}), _defineProperty(_Object$create, kHandlePromise, {
value: function value(resolve, reject) {
var data = iterator[kStream].read();
if (data) {
iterator[kLastPromise] = null;
iterator[kLastResolve] = null;
iterator[kLastReject] = null;
resolve(createIterResult(data, false));
} else {
iterator[kLastResolve] = resolve;
iterator[kLastReject] = reject;
}
},
writable: true
}), _Object$create));
iterator[kLastPromise] = null;
finished(stream, function (err) {
if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
var reject = iterator[kLastReject];
// reject if we are waiting for data in the Promise
// returned by next() and store the error
if (reject !== null) {
iterator[kLastPromise] = null;
iterator[kLastResolve] = null;
iterator[kLastReject] = null;
reject(err);
}
iterator[kError] = err;
return;
}
var resolve = iterator[kLastResolve];
if (resolve !== null) {
iterator[kLastPromise] = null;
iterator[kLastResolve] = null;
iterator[kLastReject] = null;
resolve(createIterResult(undefined, true));
}
iterator[kEnded] = true;
});
stream.on('readable', onReadable.bind(null, iterator));
return iterator;
};
module.exports = createReadableStreamAsyncIterator;

183
BACK_BACK/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/buffer_list.js generated vendored Executable file
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'use strict';
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return typeof key === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (typeof input !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (typeof res !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
var _require = require('buffer'),
Buffer = _require.Buffer;
var _require2 = require('util'),
inspect = _require2.inspect;
var custom = inspect && inspect.custom || 'inspect';
function copyBuffer(src, target, offset) {
Buffer.prototype.copy.call(src, target, offset);
}
module.exports = /*#__PURE__*/function () {
function BufferList() {
_classCallCheck(this, BufferList);
this.head = null;
this.tail = null;
this.length = 0;
}
_createClass(BufferList, [{
key: "push",
value: 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;
}
}, {
key: "unshift",
value: function unshift(v) {
var entry = {
data: v,
next: this.head
};
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
}
}, {
key: "shift",
value: 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;
}
}, {
key: "clear",
value: function clear() {
this.head = this.tail = null;
this.length = 0;
}
}, {
key: "join",
value: 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;
}
}, {
key: "concat",
value: function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
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;
}
// Consumes a specified amount of bytes or characters from the buffered data.
}, {
key: "consume",
value: function consume(n, hasStrings) {
var ret;
if (n < this.head.data.length) {
// `slice` is the same for buffers and strings.
ret = this.head.data.slice(0, n);
this.head.data = this.head.data.slice(n);
} else if (n === this.head.data.length) {
// First chunk is a perfect match.
ret = this.shift();
} else {
// Result spans more than one buffer.
ret = hasStrings ? this._getString(n) : this._getBuffer(n);
}
return ret;
}
}, {
key: "first",
value: function first() {
return this.head.data;
}
// Consumes a specified amount of characters from the buffered data.
}, {
key: "_getString",
value: function _getString(n) {
var p = this.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) this.head = p.next;else this.head = this.tail = null;
} else {
this.head = p;
p.data = str.slice(nb);
}
break;
}
++c;
}
this.length -= c;
return ret;
}
// Consumes a specified amount of bytes from the buffered data.
}, {
key: "_getBuffer",
value: function _getBuffer(n) {
var ret = Buffer.allocUnsafe(n);
var p = this.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) this.head = p.next;else this.head = this.tail = null;
} else {
this.head = p;
p.data = buf.slice(nb);
}
break;
}
++c;
}
this.length -= c;
return ret;
}
// Make sure the linked list only shows the minimal necessary information.
}, {
key: custom,
value: function value(_, options) {
return inspect(this, _objectSpread(_objectSpread({}, options), {}, {
// Only inspect one level.
depth: 0,
// It should not recurse.
customInspect: false
}));
}
}]);
return BufferList;
}();

96
BACK_BACK/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/destroy.js generated vendored Executable file
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'use strict';
// 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) {
if (!this._writableState) {
process.nextTick(emitErrorNT, this, err);
} else if (!this._writableState.errorEmitted) {
this._writableState.errorEmitted = true;
process.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) {
if (!_this._writableState) {
process.nextTick(emitErrorAndCloseNT, _this, err);
} else if (!_this._writableState.errorEmitted) {
_this._writableState.errorEmitted = true;
process.nextTick(emitErrorAndCloseNT, _this, err);
} else {
process.nextTick(emitCloseNT, _this);
}
} else if (cb) {
process.nextTick(emitCloseNT, _this);
cb(err);
} else {
process.nextTick(emitCloseNT, _this);
}
});
return this;
}
function emitErrorAndCloseNT(self, err) {
emitErrorNT(self, err);
emitCloseNT(self);
}
function emitCloseNT(self) {
if (self._writableState && !self._writableState.emitClose) return;
if (self._readableState && !self._readableState.emitClose) return;
self.emit('close');
}
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.finalCalled = false;
this._writableState.prefinished = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
}
}
function emitErrorNT(self, err) {
self.emit('error', err);
}
function errorOrDestroy(stream, err) {
// We have tests that rely on errors being emitted
// in the same tick, so changing this is semver major.
// For now when you opt-in to autoDestroy we allow
// the error to be emitted nextTick. In a future
// semver major update we should change the default to this.
var rState = stream._readableState;
var wState = stream._writableState;
if (rState && rState.autoDestroy || wState && wState.autoDestroy) stream.destroy(err);else stream.emit('error', err);
}
module.exports = {
destroy: destroy,
undestroy: undestroy,
errorOrDestroy: errorOrDestroy
};

86
BACK_BACK/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/end-of-stream.js generated vendored Executable file
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// Ported from https://github.com/mafintosh/end-of-stream with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';
var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE;
function once(callback) {
var called = false;
return function () {
if (called) return;
called = true;
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
callback.apply(this, args);
};
}
function noop() {}
function isRequest(stream) {
return stream.setHeader && typeof stream.abort === 'function';
}
function eos(stream, opts, callback) {
if (typeof opts === 'function') return eos(stream, null, opts);
if (!opts) opts = {};
callback = once(callback || noop);
var readable = opts.readable || opts.readable !== false && stream.readable;
var writable = opts.writable || opts.writable !== false && stream.writable;
var onlegacyfinish = function onlegacyfinish() {
if (!stream.writable) onfinish();
};
var writableEnded = stream._writableState && stream._writableState.finished;
var onfinish = function onfinish() {
writable = false;
writableEnded = true;
if (!readable) callback.call(stream);
};
var readableEnded = stream._readableState && stream._readableState.endEmitted;
var onend = function onend() {
readable = false;
readableEnded = true;
if (!writable) callback.call(stream);
};
var onerror = function onerror(err) {
callback.call(stream, err);
};
var onclose = function onclose() {
var err;
if (readable && !readableEnded) {
if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
return callback.call(stream, err);
}
if (writable && !writableEnded) {
if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE();
return callback.call(stream, err);
}
};
var onrequest = function onrequest() {
stream.req.on('finish', onfinish);
};
if (isRequest(stream)) {
stream.on('complete', onfinish);
stream.on('abort', onclose);
if (stream.req) onrequest();else stream.on('request', onrequest);
} else if (writable && !stream._writableState) {
// legacy streams
stream.on('end', onlegacyfinish);
stream.on('close', onlegacyfinish);
}
stream.on('end', onend);
stream.on('finish', onfinish);
if (opts.error !== false) stream.on('error', onerror);
stream.on('close', onclose);
return function () {
stream.removeListener('complete', onfinish);
stream.removeListener('abort', onclose);
stream.removeListener('request', onrequest);
if (stream.req) stream.req.removeListener('finish', onfinish);
stream.removeListener('end', onlegacyfinish);
stream.removeListener('close', onlegacyfinish);
stream.removeListener('finish', onfinish);
stream.removeListener('end', onend);
stream.removeListener('error', onerror);
stream.removeListener('close', onclose);
};
}
module.exports = eos;

3
BACK_BACK/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/from-browser.js generated vendored Executable file
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module.exports = function () {
throw new Error('Readable.from is not available in the browser')
};

52
BACK_BACK/node_modules/htmlparser2/node_modules/readable-stream/lib/internal/streams/from.js generated vendored Executable file
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'use strict';
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return typeof key === "symbol" ? key : String(key); }
function _toPrimitive(input, hint) { if (typeof input !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (typeof res !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
var ERR_INVALID_ARG_TYPE = require('../../../errors').codes.ERR_INVALID_ARG_TYPE;
function from(Readable, iterable, opts) {
var iterator;
if (iterable && typeof iterable.next === 'function') {
iterator = iterable;
} else if (iterable && iterable[Symbol.asyncIterator]) iterator = iterable[Symbol.asyncIterator]();else if (iterable && iterable[Symbol.iterator]) iterator = iterable[Symbol.iterator]();else throw new ERR_INVALID_ARG_TYPE('iterable', ['Iterable'], iterable);
var readable = new Readable(_objectSpread({
objectMode: true
}, opts));
// Reading boolean to protect against _read
// being called before last iteration completion.
var reading = false;
readable._read = function () {
if (!reading) {
reading = true;
next();
}
};
function next() {
return _next2.apply(this, arguments);
}
function _next2() {
_next2 = _asyncToGenerator(function* () {
try {
var _yield$iterator$next = yield iterator.next(),
value = _yield$iterator$next.value,
done = _yield$iterator$next.done;
if (done) {
readable.push(null);
} else if (readable.push(yield value)) {
next();
} else {
reading = false;
}
} catch (err) {
readable.destroy(err);
}
});
return _next2.apply(this, arguments);
}
return readable;
}
module.exports = from;

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// Ported from https://github.com/mafintosh/pump with
// permission from the author, Mathias Buus (@mafintosh).
'use strict';
var eos;
function once(callback) {
var called = false;
return function () {
if (called) return;
called = true;
callback.apply(void 0, arguments);
};
}
var _require$codes = require('../../../errors').codes,
ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS,
ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED;
function noop(err) {
// Rethrow the error if it exists to avoid swallowing it
if (err) throw err;
}
function isRequest(stream) {
return stream.setHeader && typeof stream.abort === 'function';
}
function destroyer(stream, reading, writing, callback) {
callback = once(callback);
var closed = false;
stream.on('close', function () {
closed = true;
});
if (eos === undefined) eos = require('./end-of-stream');
eos(stream, {
readable: reading,
writable: writing
}, function (err) {
if (err) return callback(err);
closed = true;
callback();
});
var destroyed = false;
return function (err) {
if (closed) return;
if (destroyed) return;
destroyed = true;
// request.destroy just do .end - .abort is what we want
if (isRequest(stream)) return stream.abort();
if (typeof stream.destroy === 'function') return stream.destroy();
callback(err || new ERR_STREAM_DESTROYED('pipe'));
};
}
function call(fn) {
fn();
}
function pipe(from, to) {
return from.pipe(to);
}
function popCallback(streams) {
if (!streams.length) return noop;
if (typeof streams[streams.length - 1] !== 'function') return noop;
return streams.pop();
}
function pipeline() {
for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) {
streams[_key] = arguments[_key];
}
var callback = popCallback(streams);
if (Array.isArray(streams[0])) streams = streams[0];
if (streams.length < 2) {
throw new ERR_MISSING_ARGS('streams');
}
var error;
var destroys = streams.map(function (stream, i) {
var reading = i < streams.length - 1;
var writing = i > 0;
return destroyer(stream, reading, writing, function (err) {
if (!error) error = err;
if (err) destroys.forEach(call);
if (reading) return;
destroys.forEach(call);
callback(error);
});
});
return streams.reduce(pipe);
}
module.exports = pipeline;

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'use strict';
var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE;
function highWaterMarkFrom(options, isDuplex, duplexKey) {
return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null;
}
function getHighWaterMark(state, options, duplexKey, isDuplex) {
var hwm = highWaterMarkFrom(options, isDuplex, duplexKey);
if (hwm != null) {
if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) {
var name = isDuplex ? duplexKey : 'highWaterMark';
throw new ERR_INVALID_OPT_VALUE(name, hwm);
}
return Math.floor(hwm);
}
// Default value
return state.objectMode ? 16 : 16 * 1024;
}
module.exports = {
getHighWaterMark: getHighWaterMark
};

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module.exports = require('events').EventEmitter;

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module.exports = require('stream');

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{
"name": "readable-stream",
"version": "3.6.2",
"description": "Streams3, a user-land copy of the stream library from Node.js",
"main": "readable.js",
"engines": {
"node": ">= 6"
},
"dependencies": {
"inherits": "^2.0.3",
"string_decoder": "^1.1.1",
"util-deprecate": "^1.0.1"
},
"devDependencies": {
"@babel/cli": "^7.2.0",
"@babel/core": "^7.2.0",
"@babel/polyfill": "^7.0.0",
"@babel/preset-env": "^7.2.0",
"airtap": "0.0.9",
"assert": "^1.4.0",
"bl": "^2.0.0",
"deep-strict-equal": "^0.2.0",
"events.once": "^2.0.2",
"glob": "^7.1.2",
"gunzip-maybe": "^1.4.1",
"hyperquest": "^2.1.3",
"lolex": "^2.6.0",
"nyc": "^11.0.0",
"pump": "^3.0.0",
"rimraf": "^2.6.2",
"tap": "^12.0.0",
"tape": "^4.9.0",
"tar-fs": "^1.16.2",
"util-promisify": "^2.1.0"
},
"scripts": {
"test": "tap -J --no-esm test/parallel/*.js test/ours/*.js",
"ci": "TAP=1 tap --no-esm test/parallel/*.js test/ours/*.js | tee test.tap",
"test-browsers": "airtap --sauce-connect --loopback airtap.local -- test/browser.js",
"test-browser-local": "airtap --open --local -- test/browser.js",
"cover": "nyc npm test",
"report": "nyc report --reporter=lcov",
"update-browser-errors": "babel -o errors-browser.js errors.js"
},
"repository": {
"type": "git",
"url": "git://github.com/nodejs/readable-stream"
},
"keywords": [
"readable",
"stream",
"pipe"
],
"browser": {
"util": false,
"worker_threads": false,
"./errors": "./errors-browser.js",
"./readable.js": "./readable-browser.js",
"./lib/internal/streams/from.js": "./lib/internal/streams/from-browser.js",
"./lib/internal/streams/stream.js": "./lib/internal/streams/stream-browser.js"
},
"nyc": {
"include": [
"lib/**.js"
]
},
"license": "MIT"
}

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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');
exports.finished = require('./lib/internal/streams/end-of-stream.js');
exports.pipeline = require('./lib/internal/streams/pipeline.js');

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var Stream = require('stream');
if (process.env.READABLE_STREAM === 'disable' && Stream) {
module.exports = Stream.Readable;
Object.assign(module.exports, Stream);
module.exports.Stream = Stream;
} else {
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = 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');
exports.finished = require('./lib/internal/streams/end-of-stream.js');
exports.pipeline = require('./lib/internal/streams/pipeline.js');
}

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{
"name": "htmlparser2",
"description": "Fast & forgiving HTML/XML/RSS parser",
"version": "3.10.1",
"author": "Felix Boehm <me@feedic.com>",
"keywords": [
"html",
"parser",
"streams",
"xml",
"dom",
"rss",
"feed",
"atom"
],
"repository": {
"type": "git",
"url": "git://github.com/fb55/htmlparser2.git"
},
"bugs": {
"mail": "me@feedic.com",
"url": "http://github.com/fb55/htmlparser2/issues"
},
"directories": {
"lib": "lib/"
},
"main": "lib/index.js",
"files": [
"lib"
],
"scripts": {
"lcov": "istanbul cover _mocha --report lcovonly -- -R spec",
"coveralls": "npm run lint && npm run lcov && (cat coverage/lcov.info | coveralls || exit 0)",
"test": "mocha && npm run lint",
"lint": "eslint lib test"
},
"dependencies": {
"domelementtype": "^1.3.1",
"domhandler": "^2.3.0",
"domutils": "^1.5.1",
"entities": "^1.1.1",
"inherits": "^2.0.1",
"readable-stream": "^3.1.1"
},
"devDependencies": {
"coveralls": "^3.0.1",
"eslint": "^5.13.0",
"istanbul": "^0.4.3",
"mocha": "^5.2.0",
"mocha-lcov-reporter": "^1.2.0"
},
"browser": {
"readable-stream": false
},
"license": "MIT",
"prettier": {
"tabWidth": 4
}
}