From 9be1236a2f1e81b76b755ffa5a7bad9e9af2db73 Mon Sep 17 00:00:00 2001
From: Cyn <SlyCedix@gmail.com>
Date: Sat, 25 Dec 2021 17:15:57 -0500
Subject: [PATCH] Fix hashing function

---
 src/watcher.ts | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/src/watcher.ts b/src/watcher.ts
index 43ba503..2dd0772 100644
--- a/src/watcher.ts
+++ b/src/watcher.ts
@@ -1,31 +1,31 @@
-import { NS, ProcessInfo } from "../NetscriptDefinitions"
+import { NS, ProcessInfo } from '../NetscriptDefinitions'
 
-export async function main(ns : NS) : Promise<void> {
-    const hashes : any = {}
+export async function main(ns: NS): Promise<void> {
+    const hashes: any = {}
 
-    const files = ns.ls('home', '.js') 
-    for ( const file of files ) {
+    const files = ns.ls('home', '.js')
+    for (const file of files) {
         const contents = ns.read(file)
         hashes[file] = getHash(contents)
     }
 
-    while(true) {
+    while (true) {
         const files = ns.ls('home', '.js')
 
-        for(const file of files ) {
+        for (const file of files) {
             const contents = ns.read(file)
             const hash = getHash(contents)
 
-            if(hash != hashes[file]) {
+            if (hash != hashes[file]) {
                 ns.tprint(`INFO: Detected change in ${file}`)
 
-                const processes = ns.ps().filter((p : ProcessInfo) => {
+                const processes = ns.ps().filter((p: ProcessInfo) => {
                     return p.filename == file
                 })
 
-                for(const process of processes) {
-                    if(process.filename != ns.getScriptName()) {
-                        ns.tprint(`INFO: Restarting ${process.filename} ${process.args} -t ${process.threads}`)
+                for (const process of processes) {
+                    ns.tprint(`INFO: Restarting ${process.filename} ${process.args} -t ${process.threads}`)
+                    if (process.filename != ns.getScriptName()) {
                         ns.kill(process.pid, ns.getHostname())
                         ns.run(process.filename, process.threads, ...process.args)
                     } else {
@@ -41,6 +41,13 @@ export async function main(ns : NS) : Promise<void> {
     }
 }
 
-function getHash(input : string) : number {
-    return input.split("").reduce( (a, b) => ((a << 5) - 1) + b.charCodeAt(0)|0, 0)
+const getHash = (input: string): number => {
+    let hash = 0, i, chr
+    if (input.length === 0) return hash
+    for (i = 0; i < input.length; i++) {
+        chr = input.charCodeAt(i)
+        hash = ((hash << 5) - hash) + chr
+        hash |= 0 // Convert to 32bit integer
+    }
+    return hash
 }
\ No newline at end of file