| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /** |
| * A module containing any utility functions. |
| * @author Jorge Bay Gondra |
| */ |
| 'use strict'; |
| |
| const crypto = require('crypto'); |
| |
| exports.toLong = function toLong(value) { |
| return new Long(value); |
| }; |
| |
| const Long = exports.Long = function Long(value) { |
| if (typeof value !== 'string' && typeof value !== 'number') { |
| throw new TypeError('The value must be a string or a number'); |
| } |
| this.value = value.toString(); |
| }; |
| |
| exports.getUuid = function getUuid() { |
| const buffer = crypto.randomBytes(16); |
| //clear the version |
| buffer[6] &= 0x0f; |
| //set the version 4 |
| buffer[6] |= 0x40; |
| //clear the variant |
| buffer[8] &= 0x3f; |
| //set the IETF variant |
| buffer[8] |= 0x80; |
| const hex = buffer.toString('hex'); |
| return ( |
| hex.substr(0, 8) + '-' + |
| hex.substr(8, 4) + '-' + |
| hex.substr(12, 4) + '-' + |
| hex.substr(16, 4) + '-' + |
| hex.substr(20, 12)); |
| }; |
| |
| exports.emptyArray = Object.freeze([]); |