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[refactor] Moved getRandombyte to its own TS file

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Also made use of `getRandomInt`
This commit is contained in:
Steven Evans 2018-07-04 21:04:00 -04:00
parent be9891d93b
commit 8b98321b9c
2 changed files with 19 additions and 8 deletions
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14
utils/IPAddress.js
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@ -1,13 +1,15 @@
import {AllServers} from "../src/Server"; import {AllServers} from "../src/Server";
import {getRandomByte} from "./helpers/getRandomByte";
/* Functions to deal with manipulating IP addresses*/ /* Functions to deal with manipulating IP addresses*/
//Generate a random IP address //Generate a random IP address
//Will not return an IP address that already exists in the AllServers array //Will not return an IP address that already exists in the AllServers array
function createRandomIp() { function createRandomIp() {
var ip = createRandomByte(99) +'.' + var ip = getRandomByte(99) + '.' +
createRandomByte(9) +'.' + getRandomByte(9) + '.' +
createRandomByte(9) +'.' + getRandomByte(9) + '.' +
createRandomByte(9); getRandomByte(9);
//If the Ip already exists, recurse to create a new one //If the Ip already exists, recurse to create a new one
if (ipExists(ip)) { if (ipExists(ip)) {
@ -28,10 +30,6 @@ function ipExists(ip) {
return false; return false;
} }
function createRandomByte(n=9) {
return Math.round(Math.random()*n);
}
function isValidIPAddress(ipaddress) { function isValidIPAddress(ipaddress) {
if (/^(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ipaddress)) if (/^(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-6]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ipaddress))
{ {

13
utils/helpers/getRandomByte.ts Normal file
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@ -0,0 +1,13 @@
import { getRandomInt } from "./getRandomInt";
/**
* Gets a random value in the range of a byte (0 - 255), or up to the maximum.
* @param max The maximum value (up to 255).
*/
export function getRandomByte(max: number) {
// Technically 2^8 is 256, but the values are 0-255, not 1-256.
const byteMaximum: number = 255;
const upper: number = Math.max(Math.min(max, byteMaximum), 0);
return getRandomInt(0, upper);
}