fast-xml-parser/src/read.js

Validate XML or Parse XML to JS/JSON very fast without C/C++ based libraries

"use strict";

// Copyright 2013 Timothy J Fontaine <tjfontaine@gmail.com>
//
// 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

/*

Read any stream all the way to the end and trigger a single cb

const http = require('http');

const rte = require('readtoend');

http.get('http://nodejs.org', function(response) {
  rte.readToEnd(response, function(err, body) {
    console.log(body);
  });
});

*/

let stream = require("stream");
const util = require("util");

if (!stream.Transform) {
    stream = require("readable-stream");
}

function ReadToEnd(opts) {
    if (!(this instanceof ReadToEnd)) {
        return new ReadToEnd(opts);
    }

    stream.Transform.call(this, opts);

    this._rte_encoding = opts.encoding || "utf8";

    this._buff = "";
}

module.exports = ReadToEnd;
util.inherits(ReadToEnd, stream.Transform);

ReadToEnd.prototype._transform = function(chunk, encoding, done) {
    this._buff += chunk.toString(this._rte_encoding);
    this.push(chunk);
    done();
};

ReadToEnd.prototype._flush = function(done) {
    this.emit("complete", undefined, this._buff);
    done();
};

ReadToEnd.readToEnd = function(stream, options, cb) {
    if (!cb) {
        cb = options;
        options = {};
    }

    const dest = new ReadToEnd(options);

    stream.pipe(dest);

    stream.on("error", function(err) {
        stream.unpipe(dest);
        cb(err);
    });

    dest.on("complete", cb);

    dest.resume();

    return dest;
};