Tryag File Manager

//lib/nodejs/getpass/lib/index.js

/*
 * Copyright 2016, Joyent, Inc. All rights reserved.
 * Author: Alex Wilson <alex.wilson@joyent.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.
*/

module.exports = {
	getPass: getPass
};

const mod_tty = require('tty');
const mod_fs = require('fs');
const mod_assert = require('assert-plus');

var BACKSPACE = String.fromCharCode(127);
var CTRLC = '\u0003';
var CTRLD = '\u0004';

function getPass(opts, cb) {
	if (typeof (opts) === 'function' && cb === undefined) {
		cb = opts;
		opts = {};
	}
	mod_assert.object(opts, 'options');
	mod_assert.func(cb, 'callback');

mod_assert.optionalString(opts.prompt, 'options.prompt');
	if (opts.prompt === undefined)
		opts.prompt = 'Password';

openTTY(function (err, rfd, wfd, rtty, wtty) {
		if (err) {
			cb(err);
			return;
		}

wtty.write(opts.prompt + ':');
		rtty.resume();
		rtty.setRawMode(true);
		rtty.resume();
		rtty.setEncoding('utf8');

var pw = '';
		rtty.on('data', onData);