added an option to patch unheadered roms with patches that need a headered rom\nusing now service workers for webapp cache

RomPatcher.js

@@ -1,15 +1,5 @@
-/* RomPatcher.js v20171107 - Marc Robledo 2016-2017 - http://www.marcrobledo.com/license */
+/* RomPatcher.js v20180423 - Marc Robledo 2016-2018 - http://www.marcrobledo.com/license */
-var MAX_ROM_SIZE=33554432;var SNES_HEADERED_ROMS_SIZE=[
+var MAX_ROM_SIZE=33554432;
-	262144+512,
-	524288+512,
-	1048576+512,
-	2097152+512,
-	4194304+512,
-	8388608+512,
-	16777216+512,
-	33554432+512,
-	50331648+512
-];
 var romFile, headeredRomFile, unheaderedRomFile, patch, romFile1, romFile2, tempFile;
 /* Shortcuts */
 function addEvent(e,ev,f){e.addEventListener(ev,f,false)}
@@ -19,6 +9,11 @@ function el(e){return document.getElementById(e)}
 
 /* initialize app */
 addEvent(window,'load',function(){
+	/* service worker */
+	if('serviceWorker' in navigator)
+		navigator.serviceWorker.register('_cache_service_worker.js');
+
+
 	el('input-file-rom').value='';
 	el('input-file-patch').value='';
 	el('input-file-rom1').value='';
@@ -27,12 +22,20 @@ addEvent(window,'load',function(){
 
 	addEvent(el('input-file-rom'), 'change', function(){
 		romFile=new MarcBinFile(this, function(){
+			el('checkbox-addheader').checked=false;
 			el('checkbox-removeheader').checked=false;
-			unheaderedRomFile=null;
 
-			if(SNES_HEADERED_ROMS_SIZE.indexOf(romFile.fileSize)>=0){
+			unheaderedRomFile=null;
+			headeredRomFile=null;
+
+			if(isSnesRom(romFile.fileName) && isPowerOfTwo(romFile.fileSize)){
+				el('row-addheader').style.display='flex';
+				el('row-removeheader').style.display='none';
+			}else if(isSnesRom(romFile.fileName) && isHeadered(romFile.fileSize, 512)){
+				el('row-addheader').style.display='none';
 				el('row-removeheader').style.display='flex';
 			}else{
+				el('row-addheader').style.display='none';
 				el('row-removeheader').style.display='none';
 			}
 	
@@ -65,7 +68,26 @@ addEvent(window,'load',function(){
 
 		updateChecksums(romFile);
 	});
+
+	addEvent(el('checkbox-addheader'), 'change', function(){
+		if(!headeredRomFile){
+			unheaderedRomFile=romFile;
+			headeredRomFile=new MarcBinFile(unheaderedRomFile.fileSize+512);
+			headeredRomFile.writeBytes(512, unheaderedRomFile.readBytes(0, unheaderedRomFile.fileSize));
+			headeredRomFile.fileName=unheaderedRomFile.fileName;
+		}
+
+		if(this.checked)
+			romFile=headeredRomFile;
+		else
+			romFile=unheaderedRomFile;
+
 	});
+});
+
+function isSnesRom(fileName){return /\.(smc|sfc|fig|swc)$/.test(fileName)}
+function isPowerOfTwo(fileSize){return (fileSize & (fileSize-1))===0}
+function isHeadered(fileSize,headerSize){return isPowerOfTwo(fileSize-headerSize)}
 
 
 function updateChecksums(file){
@@ -103,7 +125,14 @@ function applyPatchFile(p,r){
 	if(p && r){
 		var patchedROM=p.apply(r);
 		patchedROM.fileName=r.fileName.replace(/\.(.*?)$/, ' (patched).$1');
-		patchedROM.save()
+		if(el('checkbox-addheader').checked){
+			var unheaderedPatchedROM=new MarcBinFile(patchedROM.fileSize-512);
+			unheaderedPatchedROM.fileName=patchedROM.fileName;
+			unheaderedPatchedROM.writeBytes(0, patchedROM.readBytes(512, patchedROM.fileSize-512));
+			unheaderedPatchedROM.save();
+		}else{
+			patchedROM.save();
+		}
 	}else{
 		MarcDialogs.alert('No ROM/patch selected');
 	}

_cache_service_worker.js

@@ -0,0 +1,30 @@
+/*
+Copyright 2016 Google Inc. All Rights Reserved.
+Licensed 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.
+---
+mod by marcrobledo, original from: https://github.com/GoogleChrome/samples/blob/gh-pages/service-worker/basic/service-worker.js
+*/
+
+const PRECACHE_ID='v20180423';
+const PRECACHE_FILES=[
+'index.html','./',
+'RomPatcher.css',
+'RomPatcher.js',
+'favicon.png',
+'logo.png',
+'ips.js',
+'ups.js',
+'aps.js',
+'bps.js',
+'ByteFlipper.js'
+];
+
+
+self.addEventListener('install',event=>{event.waitUntil(caches.open(PRECACHE_ID).then(cache=>cache.addAll(PRECACHE_FILES)).then(self.skipWaiting()))});self.addEventListener('activate',event=>{const currentCaches=[PRECACHE_ID,'runtime'];event.waitUntil(caches.keys().then(cacheNames=>{return cacheNames.filter(cacheName=>!currentCaches.includes(cacheName));}).then(cachesToDelete=>{return Promise.all(cachesToDelete.map(cacheToDelete=>{return caches.delete(cacheToDelete);}))}).then(()=>self.clients.claim()))});self.addEventListener('fetch',event=>{if(event.request.url.startsWith(self.location.origin))event.respondWith(caches.match(event.request).then(cachedResponse=>{if(cachedResponse)return cachedResponse;return caches.open('runtime').then(cache=>{return fetch(event.request).then(response=>{return cache.put(event.request,response.clone()).then(()=>{return response})})})}))})

index.html

@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html manifest="manifest.appcache">
+<html>
 <head>
 	<title>RomPatcher.js</title>
 	<meta http-equiv="content-Type" content="text/html; charset=UTF-8"/>
@@ -51,11 +51,17 @@
 			</div>
 		</div>
 		<div class="row" id="row-removeheader" style="display:none">
-			<div class="six columns text-right"><label for="checkbox-removeheader">Remove header:</label></div>
+			<div class="six columns text-right"><label for="checkbox-removeheader">Remove header before patching:</label></div>
 			<div class="six columns">
 				<input type="checkbox" id="checkbox-removeheader" />
 			</div>
 		</div>
+		<div class="row" id="row-addheader" style="display:none">
+			<div class="six columns text-right"><label for="checkbox-addheader">Patch needs a headered ROM:</label></div>
+			<div class="six columns">
+				<input type="checkbox" id="checkbox-addheader" />
+			</div>
+		</div>
 
 		<div class="row">
 			<div class="six columns text-right"><label for="input-file-patch">Patch file <small>(IPS/UPS/APS/BPS)</small>:</label></div>

manifest.appcache

@@ -1,17 +0,0 @@
-CACHE MANIFEST
-#v20171112
-#CACHE:
-index.html
-RomPatcher.css
-RomPatcher.js
-favicon.png
-logo.png
-ips.js
-ups.js
-aps.js
-bps.js
-ByteFlipper.js
-
-# force these files to be loaded in network
-NETWORK:
-*