daphnis/public/patcher/js/dllpatcher.js

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JavaScript
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/*jshint esversion: 6 */
(function(window, document) {
"use strict";
// form labels often need unique IDs - this can be used to generate some
window.Patcher_uniqueid = 0;
var createID = function() {
window.Patcher_uniqueid++;
return "dllpatch_" + window.Patcher_uniqueid;
};
var bytesMatch = function(buffer, offset, bytes) {
for(var i = 0; i < bytes.length; i++) {
if(buffer[offset+i] != bytes[i])
return false;
}
return true;
};
var bytesToHex = function(bytes) {
var s = ''
for(var i = 0; i < bytes.length; i++) {
s += bytes[i].toString(16).toUpperCase().padStart(2, '0');
}
return s;
}
var hexToBytes = function(hex) {
var bytes = [];
for(var i = 0; i < hex.length; i += 2) {
bytes.push(parseInt(hex.substr(i, 2), 16));
}
return bytes;
}
var replace = function(buffer, offset, bytes) {
for(var i = 0; i < bytes.length; i++) {
buffer[offset+i] = bytes[i];
}
};
var whichBytesMatch = function(buffer, offset, bytesArray) {
for(var i = 0; i < bytesArray.length; i++) {
if(bytesMatch(buffer, offset, bytesArray[i]))
return i;
}
return -1;
};
// shorthand functions
var createElementClass = function(elName, className, textContent, innerHTML) {
var el = document.createElement(elName);
el.className = className || '';
el.textContent = textContent || ''; // optional
// overrides textContent with HTML if provided
if(innerHTML) {
el.innerHTML = innerHTML;
}
return el;
};
var createInput = function(type, id, className) {
var el = document.createElement('input');
el.type = type;
el.id = id;
el.className = className || '';
return el;
};
var createLabel = function(labelText, htmlFor, className) {
var el = document.createElement('label');
el.textContent = labelText;
el.htmlFor = htmlFor;
el.className = className || '';
return el;
};
// Each unique kind of patch should have createUI, validatePatch, applyPatch,
// updateUI
class StandardPatch {
constructor(options) {
this.name = options.name;
this.patches = options.patches;
this.tooltip = options.tooltip;
this.danger = options.danger;
}
createUI(parent) {
var id = createID();
var label = this.name;
var patch = createElementClass('div', 'patch');
this.checkbox = createInput('checkbox', id);
patch.appendChild(this.checkbox);
patch.appendChild(createLabel(label, id));
if(this.tooltip) {
patch.appendChild(createElementClass('div', 'tooltip', this.tooltip));
}
if(this.danger) {
patch.appendChild(createElementClass('div', 'danger tooltip', this.danger));
}
parent.appendChild(patch);
}
updateUI(file) {
this.checkbox.checked = this.checkPatchBytes(file) === "on";
}
validatePatch(file) {
var status = this.checkPatchBytes(file);
if(status === "on") {
console.log('"' + this.name + '"', "is enabled!");
} else if(status === "off") {
console.log('"' + this.name + '"', "is disabled!");
} else {
return '"' + this.name + '" is neither on nor off! Have you got the right file?';
}
}
applyPatch(file) {
this.replaceAll(file, this.checkbox.checked);
}
replaceAll(file, featureOn) {
for(var i = 0; i < this.patches.length; i++) {
replace(file, this.patches[i].offset,
featureOn? this.patches[i].on : this.patches[i].off);
}
}
checkPatchBytes(file) {
var patchStatus = "";
for(var i = 0; i < this.patches.length; i++) {
var patch = this.patches[i];
if(bytesMatch(file, patch.offset, patch.off)) {
if(patchStatus === "") {
patchStatus = "off";
} else if(patchStatus != "off"){
return "on/off mismatch within patch";
}
} else if(bytesMatch(file, patch.offset, patch.on)) {
if(patchStatus === "") {
patchStatus = "on";
} else if(patchStatus != "on"){
return "on/off mismatch within patch";
}
} else {
return "patch neither on nor off";
}
}
return patchStatus;
}
}
class DynamicPatch {
constructor(options) {
this.name = options.name;
this.patches = options.patches;
this.tooltip = options.tooltip;
this.danger = options.danger;
this.mode = options.mode;
this.target = options.target;
}
createUI(parent) {
var id = createID();
var label = this.name;
this.ui = createElementClass('div', 'patch');
this.checkbox = createInput('checkbox', id);
this.ui.appendChild(this.checkbox);
this.ui.appendChild(createLabel(label, id));
if(this.tooltip) {
this.ui.appendChild(createElementClass('div', 'tooltip', this.tooltip));
}
if(this.danger) {
this.ui.appendChild(createElementClass('div', 'danger tooltip', this.danger));
}
parent.appendChild(this.ui);
}
updateUI(file) {
if (this.mode === 'all') {
this.checkbox.checked = this.checkPatchAll(file, true) === "on";
} else {
this.checkbox.checked = this.checkPatch(file, true) === "on";
}
}
validatePatch(file) {
var status = this.mode === 'all' ? this.checkPatchAll(file) : this.checkPatch(file);
if(status === "on") {
console.log('"' + this.name + '"', "is enabled!");
} else if(status === "off") {
console.log('"' + this.name + '"', "is disabled!");
} else {
return '"' + this.name + '" is neither on nor off! Have you got the right file?';
}
}
applyPatch(file) {
this.replaceAll(file, this.checkbox.checked);
}
replaceAll(file, featureOn) {
for(let patch of this.patches) {
if (Array.isArray(patch.offset)) {
for(const offset of patch.offset) {
if (this.target === 'string') {
replace(file, offset,
new TextEncoder().encode(featureOn? patch.on : patch.off));
} else {
patch.on = patch.on.map((patch, idx) => patch === 'XX' ? file[offset + idx] : patch);
patch.off = patch.off.map((patch, idx) => patch === 'XX' ? file[offset + idx] : patch);
replace(file, offset,
featureOn? patch.on : patch.off);
}
}
} else {
if (this.target === 'string') {
replace(file, patch.offset,
new TextEncoder().encode(featureOn? patch.on : patch.off));
} else {
patch.on = patch.on.map((patch, idx) => patch === 'XX' ? file[patch.offset + idx] : patch);
patch.off = patch.off.map((patch, idx) => patch === 'XX' ? file[patch.offset + idx] : patch);
replace(file, patch.offset,
featureOn? patch.on : patch.off);
}
}
}
}
checkPatch(file, updateUiFlag = false) {
var patchStatus = "";
let listUi;
if (updateUiFlag) {
listUi = document.createElement('ul');
this.ui.appendChild(listUi);
}
for(var i = 0; i < this.patches.length; i++) {
var patch = this.patches[i];
var offOffset = this.searchPatchOffset(file, patch.off, i);
var onOffset = this.searchPatchOffset(file, patch.on, i);
this.patches[i].offset = offOffset === -1 ? onOffset : offOffset;
if(offOffset > 0) {
if (updateUiFlag) {
if (this.target === 'string') {
listUi.appendChild(createElementClass('li', 'patch-off', null, '0x' + offOffset.toString(16) + ' <b>' + patch.off + '</b> will be replaced with <b>'+ patch.on +'</b>'));
} else {
listUi.appendChild(createElementClass('li', 'patch-off', '0x' + offOffset.toString(16) + ' will be replaced'));
}
}
if(patchStatus === "") {
patchStatus = "off";
}
} else if(onOffset > 0) {
if (updateUiFlag) {
if (this.target === 'string') {
listUi.appendChild(createElementClass('li', 'patch-on', null, '0x' + onOffset.toString(16) + ' <b>' + patch.on + '</b> will be replaced with <b>'+ patch.off +'</b>'));
} else {
listUi.appendChild(createElementClass('li', 'patch-on', '0x' + onOffset.toString(16) + ' will be replaced'));
}
}
if(patchStatus === "") {
patchStatus = "on";
}
} else if (this.mode === 'all') {
continue;
} else {
return "patch string not found";
}
}
return patchStatus;
}
checkPatchAll(file, updateUiFlag = false) {
var patchStatus = "";
let listUi;
if (updateUiFlag) {
listUi = document.createElement('ul');
this.ui.appendChild(listUi);
}
for(let patch of this.patches) {
var offOffset = this.searchPatchOffsetAll(file, patch.off);
var onOffset = this.searchPatchOffsetAll(file, patch.on);
patch.offset = offOffset.length === 0 ? onOffset : offOffset;
if(offOffset.length > 0) {
if (updateUiFlag) {
for(const offset of offOffset) {
listUi.appendChild(createElementClass('li', 'patch-off', '0x' + offset.toString(16) + ' will be replaced'));
}
}
if(patchStatus === "") {
patchStatus = "off";
}
} else if(onOffset.length > 0) {
if (updateUiFlag) {
for(const offset of onOffset) {
listUi.appendChild(createElementClass('li', 'patch-on', '0x' + offset.toString(16) + ' will be replaced'));
}
}
if(patchStatus === "") {
patchStatus = "on";
}
} else {
return "patch string not found";
}
}
return patchStatus;
}
searchPatchOffset(file, search, offset) {
let searchBytes;
if (this.target === 'string') {
searchBytes = new TextEncoder().encode(search);
} else {
searchBytes = search;
}
Uint8Array.prototype.indexOfArr = function(searchElements, fromIndex) {
fromIndex = fromIndex || 0;
var index = Array.prototype.indexOf.call(this, searchElements[0], fromIndex);
if(searchElements.length === 1 || index === -1) {
return {
match: false,
index: -1,
};
}
for(var i = index, j = 0; j < searchElements.length && i < this.length; i++, j++) {
if (this.target !== 'string' && searchElements[j] === 'XX') {
continue;
}
if(this[i] !== searchElements[j]) {
return {
match: false,
index,
};
}
}
return {
match: true,
index,
};
};
var idx = 0;
var foundCount = 0;
for (var i = 0; i < file.length; i++) {
var result = file.indexOfArr(searchBytes, idx);
if (result.match) {
if (offset === foundCount) {
return result.index;
}
foundCount++;
} else if (result.index === -1) {
break;
}
idx = result.index + 1;
}
return -1;
}
searchPatchOffsetAll(file, search) {
let searchBytes;
if (this.target === 'string') {
searchBytes = new TextEncoder().encode(search);
} else {
searchBytes = search;
}
Uint8Array.prototype.indexOfArr = function(searchElements, fromIndex) {
fromIndex = fromIndex || 0;
var index = Array.prototype.indexOf.call(this, searchElements[0], fromIndex);
if(searchElements.length === 1 || index === -1) {
return {
match: false,
index: -1,
};
}
for(var i = index, j = 0; j < searchElements.length && i < this.length; i++, j++) {
if (this.target !== 'string' && searchElements[j] === 'XX') {
continue;
}
if(this[i] !== searchElements[j]) {
return {
match: false,
index,
};
}
}
return {
match: true,
index,
};
};
var idx = 0;
var foundOffsetArray = [];
for (var i = 0; i < file.length; i++) {
var result = file.indexOfArr(searchBytes, idx);
if (result.match) {
foundOffsetArray.push(result.index);
} else if (result.index === -1) {
break;
}
idx = result.index + 1;
}
return foundOffsetArray;
}
}
// Each unique kind of patch should have createUI, validatePatch, applyPatch,
// updateUI
// The DEFAULT state is always the 1st element in the patches array
class UnionPatch {
constructor(options) {
this.name = options.name;
this.offset = options.offset;
this.patches = options.patches;
this.tooltip = options.tooltip;
this.danger = options.danger;
}
createUI(parent) {
this.radios = [];
var radio_id = createID();
var container = createElementClass('div', 'patch-union');
container.appendChild(createElementClass('span', 'patch-union-title', this.name + ':'));
if(this.tooltip) {
container.appendChild(createElementClass('div', 'tooltip', this.tooltip));
}
if(this.danger) {
container.appendChild(createElementClass('div', 'danger tooltip', this.danger));
}
container.appendChild(document.createElement('span'));
for(var i = 0; i < this.patches.length; i++) {
var patch = this.patches[i];
var id = createID();
var label = patch.name;
var patchDiv = createElementClass('div', 'patch');
var radio = createInput('radio', id);
radio.name = radio_id;
this.radios.push(radio);
patchDiv.appendChild(radio);
patchDiv.appendChild(createLabel(label, id));
if(patch.tooltip) {
patchDiv.appendChild(createElementClass('div', 'tooltip', patch.tooltip));
}
if(patch.danger) {
patchDiv.appendChild(createElementClass('div', 'danger tooltip', patch.danger));
}
container.appendChild(patchDiv);
}
parent.appendChild(container);
}
updateUI(file) {
for(var i = 0; i < this.patches.length; i++) {
if(bytesMatch(file, this.offset, this.patches[i].patch)) {
this.radios[i].checked = true;
return;
}
}
// Default fallback
this.radios[0].checked = true;
}
validatePatch(file) {
for(var i = 0; i < this.patches.length; i++) {
if(bytesMatch(file, this.offset, this.patches[i].patch)) {
console.log(this.name, "has", this.patches[i].name, "enabled");
return;
}
}
return '"' + this.name + '" doesn\'t have a valid patch! Have you got the right file?';
}
applyPatch(file) {
var patch = this.getSelected();
replace(file, this.offset, patch.patch);
}
getSelected() {
for(var i = 0; i < this.patches.length; i++) {
if(this.radios[i].checked) {
return this.patches[i];
}
}
return null;
}
}
// Each unique kind of patch should have createUI, validatePatch, applyPatch,
// updateUI
class NumberPatch {
constructor(options) {
this.name = options.name;
this.tooltip = options.tooltip;
this.danger = options.danger;
this.offset = options.offset;
this.size = options.size;
this.min = options.min;
this.max = options.max;
}
createUI(parent) {
var id = createID();
var label = this.name;
var patch = createElementClass('div', 'patch');
patch.appendChild(createLabel(label, id));
this.number = createInput('number', id);
if (this.min !== null) {
this.number.min = this.min;
}
if (this.max) {
this.number.max = this.max;
}
patch.appendChild(this.number);
if (this.tooltip) {
patch.appendChild(createElementClass('div', 'tooltip', this.tooltip));
}
if (this.danger) {
patch.appendChild(createElementClass('div', 'danger tooltip', this.danger));
}
parent.appendChild(patch);
}
updateUI(file) {
// This converts bytes from the file to big endian by shifting each
// byte `i` bytes to the left then doing a bitwise OR to add the less
// significant bytes that were gathered at earlier iterations of loop
var val = 0;
for (var i = 0; i < this.size; i++) {
val = (file[this.offset + i] << (8 * i)) | val;
}
this.number.value = val;
}
validatePatch(file) {
return;
}
applyPatch(file) {
// Convert user inputted number to little endian
const view = new DataView(new ArrayBuffer(this.size * 2));
view.setInt32(1, this.number.value, true);
for (var i = 0; i < this.size; i++) {
var val = view.getInt32(1);
// Shift off less significant bytes
val = val >> ((this.size - 1 - i) * 8);
// Mask off more significant bytes
val = val & 0xFF;
// Write this byte
file[this.offset + i] = val;
}
}
}
// Each unique kind of patch should have createUI, validatePatch, applyPatch,
// updateUI
class HexPatch {
constructor(options) {
this.name = options.name;
this.tooltip = options.tooltip;
this.danger = options.danger;
this.offset = options.offset;
this.off = options.off;
}
createUI(parent) {
this.radios = [];
var radio_id = createID();
// Title of the radio option.
var container = createElementClass('div', 'patch-union');
container.appendChild(createElementClass('span', 'patch-union-title', this.name + ':'));
if(this.tooltip) {
container.appendChild(createElementClass('div', 'tooltip', this.tooltip));
}
if(this.danger) {
container.appendChild(createElementClass('div', 'danger tooltip', this.danger));
}
container.appendChild(document.createElement('span'));
// Default option; tooltip shows default hex value.
var id = createID();
var patchDiv = createElementClass('div', 'patch');
var radio = createInput('radio', id);
radio.name = radio_id;
this.radios.push(radio);
patchDiv.appendChild(radio);
patchDiv.appendChild(createLabel('Default', id));
patchDiv.appendChild(createElementClass('div', 'tooltip', 'Value ' + bytesToHex(this.off)));
container.appendChild(patchDiv);
// Custom option.
id = createID();
patchDiv = createElementClass('div', 'patch');
radio = createInput('radio', id);
radio.name = radio_id;
this.radios.push(radio);
patchDiv.appendChild(radio);
patchDiv.appendChild(createLabel('Custom ' + this.off.length + '-byte hex value: ', id));
this.valueHex = document.createElement('input');
this.valueHex.type = 'text';
this.valueHex.id = id;
patchDiv.appendChild(this.valueHex);
patchDiv.appendChild(createElementClass('div', 'danger tooltip', 'Invalid values will not be applied.'));
container.appendChild(patchDiv);
parent.appendChild(container);
}
updateUI(file) {
if(bytesMatch(file, this.offset, this.off)) {
this.radios[0].checked = true;
return;
}
this.valueHex.value = bytesToHex(file.slice(this.offset, this.offset + this.off.length));
this.radios[1].checked = true;
}
validatePatch(file) {
if(bytesMatch(file, this.offset, this.off)) {
console.log(this.name, "has default hex value");
return;
}
console.log(this.name, "has custom hex value");
}
applyPatch(file) {
if(this.radios[0].checked) {
replace(file, this.offset, this.off);
return;
}
if(this.radios[1].checked) {
if(!this.valueHex.value.match(/^[0-9a-fA-F]+$/)) {
alert('Patch "' + this.name + '" not applied - invalid hex!');
return;
}
if(this.valueHex.value.length != this.off.length * 2) {
alert('Patch "' + this.name + '" not applied - invalid length!!');
return;
}
replace(file, this.offset, hexToBytes(this.valueHex.value));
return;
}
}
}
var loadPatch = function(_this, self, patcher) {
patcher.loadPatchUI();
patcher.updatePatchUI();
patcher.container.style.display = '';
var successStr = patcher.filename;
if (typeof _this.description === "string") {
successStr += "(" + patcher.description + ")";
}
self.successDiv.innerHTML = successStr + " loaded successfully!";
};
class PatchContainer {
constructor(patchers) {
this.patchers = patchers;
this.createUI();
}
getSupportedDLLs() {
var dlls = [];
for (var i = 0; i < this.patchers.length; i++) {
var name = this.patchers[i].filename;
if (dlls.indexOf(name) === -1) {
dlls.push(name);
}
}
return dlls;
}
createUI() {
var self = this;
var container = createElementClass('div', 'patchContainer');
var header = this.getSupportedDLLs().join(", ");
container.innerHTML = "<h3>" + header + "</h3>";
var supportedDlls = document.createElement('ul');
this.forceLoadTexts = [];
this.forceLoadButtons = [];
this.matchSuccessText = [];
for (var i = 0; i < this.patchers.length; i++) {
var checkboxId = createID();
var listItem = document.createElement('li');
listItem.appendChild(createLabel(this.patchers[i].description, checkboxId, 'patchPreviewLabel'));
var matchPercent = createElementClass('span', 'matchPercent');
this.forceLoadTexts.push(matchPercent);
listItem.appendChild(matchPercent);
var matchSuccess = createElementClass('span', 'matchSuccess');
this.matchSuccessText.push(matchSuccess);
listItem.appendChild(matchSuccess);
var forceButton = createElementClass('button', '', 'Force load?');
forceButton.style.display = 'none';
this.forceLoadButtons.push(forceButton);
listItem.appendChild(forceButton);
var input = createInput('checkbox', checkboxId, 'patchPreviewToggle');
listItem.appendChild(input);
var patchPreviews = createElementClass('ul', 'patchPreview');
for (var j = 0; j < this.patchers[i].mods.length; j++) {
var patchName = this.patchers[i].mods[j].name;
patchPreviews.appendChild(createElementClass('li', null, patchName));
}
listItem.appendChild(patchPreviews);
supportedDlls.appendChild(listItem);
}
["dragover", "dragenter"].forEach(function(n){
document.documentElement.addEventListener(n,function (e) {
container.classList.add("dragover");
e.preventDefault();
e.stopPropagation();
});
});
["dragleave", "dragend", "drop"].forEach(function(n){
document.documentElement.addEventListener(n,function (e) {
container.classList.remove("dragover");
e.preventDefault();
e.stopPropagation();
});
});
container.addEventListener("drop", function (e) {
var files = e.dataTransfer.files;
if (files && files.length > 0)
self.loadFile(files[0]);
});
var filepickerId = createID();
this.fileInput = createInput('file', filepickerId, 'fileInput');
var label = createLabel('', filepickerId, 'fileLabel');
label.innerHTML = "<strong>Choose a file</strong> or drag and drop.";
this.fileInput.addEventListener("change", function (e) {
if (this.files && this.files.length > 0)
self.loadFile(this.files[0]);
});
this.successDiv = createElementClass('div', 'success');
this.errorDiv = createElementClass('div', 'error');
container.appendChild(this.fileInput);
container.appendChild(label);
container.appendChild(createElementClass('h4', null, 'Supported Versions:'));
container.appendChild(createElementClass('h5', null, 'Click name to preview patches'));
container.appendChild(supportedDlls);
container.appendChild(this.successDiv);
container.appendChild(this.errorDiv);
document.body.appendChild(container);
}
loadFile(file) {
var reader = new FileReader();
var self = this;
reader.onload = function (e) {
var found = false;
// clear logs
self.errorDiv.textContent = '';
self.successDiv.textContent = '';
for (var i = 0; i < self.patchers.length; i++) {
// reset text and buttons
self.forceLoadButtons[i].style.display = 'none';
self.forceLoadTexts[i].textContent = '';
self.matchSuccessText[i].textContent = '';
var patcher = self.patchers[i];
// remove the previous UI to clear the page
patcher.destroyUI();
// patcher UI elements have to exist to load the file
patcher.createUI();
patcher.container.style.display = 'none';
patcher.loadBuffer(e.target.result);
if (patcher.validatePatches()) {
found = true;
loadPatch(this, self, patcher);
// show patches matched for 100% - helps identify which version is loaded
var valid = patcher.validPatches;
self.matchSuccessText[i].textContent = ' ' + valid + ' of ' + valid + ' patches matched (100%) ';
}
}
if (!found) {
// let the user force a match
for (let i = 0; i < self.patchers.length; i++) {
const patcher = self.patchers[i];
const valid = patcher.validPatches;
const percent = (valid / patcher.totalPatches * 100).toFixed(1);
self.forceLoadTexts[i].textContent = ' ' + valid + ' of ' + patcher.totalPatches + ' patches matched (' + percent + '%) ';
self.forceLoadButtons[i].style.display = '';
self.forceLoadButtons[i].onclick = function(i) {
// reset old text
for(var j = 0; j < self.patchers.length; j++) {
self.forceLoadButtons[j].style.display = 'none';
self.forceLoadTexts[j].textContent = '';
}
loadPatch(this, self, self.patchers[i]);
}.bind(this, i);
}
self.errorDiv.innerHTML = "No patch set was a 100% match.";
}
};
reader.readAsArrayBuffer(file);
}
}
class Patcher {
constructor(fname, description, args) {
this.mods = [];
for(var i = 0; i < args.length; i++) {
var mod = args[i];
if(mod.type) {
if(mod.type === "union") {
this.mods.push(new UnionPatch(mod));
}
if(mod.type === "number") {
this.mods.push(new NumberPatch(mod));
}
if(mod.type === "dynamic") {
this.mods.push(new DynamicPatch(mod));
}
if(mod.type === "hex") {
this.mods.push(new HexPatch(mod));
}
} else { // standard patch
this.mods.push(new StandardPatch(mod));
}
}
this.filename = fname;
this.description = description;
this.multiPatcher = true;
if (!this.description) {
// old style patcher, use the old method to generate the UI
this.multiPatcher = false;
this.createUI();
this.loadPatchUI();
}
}
createUI() {
var self = this;
this.container = createElementClass('div', 'patchContainer');
var header = this.filename;
if(this.description === "string") {
header += ' (' + this.description + ')';
}
this.container.innerHTML = '<h3>' + header + '</h3>';
this.successDiv = createElementClass('div', 'success');
this.errorDiv = createElementClass('div', 'error');
this.patchDiv = createElementClass('div', 'patches');
var saveButton = document.createElement('button');
saveButton.disabled = true;
saveButton.textContent = 'Load file First';
saveButton.addEventListener('click', this.saveDll.bind(this));
this.saveButton = saveButton;
if (!this.multiPatcher) {
["dragover", "dragenter"].forEach(function(n){
document.documentElement.addEventListener(n,function(e) {
self.container.classList.add('dragover');
e.preventDefault();
return true;
});
});
["dragleave", "dragend", "drop"].forEach(function(n){
document.documentElement.addEventListener(n,function(e) {
self.container.classList.remove('dragover');
e.preventDefault();
return true;
});
});
this.container.addEventListener('drop', function(e) {
var files = e.dataTransfer.files;
if(files && files.length > 0)
self.loadFile(files[0]);
});
var filepickerId = createID();
this.fileInput = createInput('file', filepickerId, 'fileInput');
var label = createLabel('', filepickerId, 'fileLabel');
label.innerHTML = '<strong>Choose a file</strong> or drag and drop.';
this.fileInput.addEventListener('change', function(e) {
if(this.files && this.files.length > 0)
self.loadFile(this.files[0]);
});
this.container.appendChild(this.fileInput);
this.container.appendChild(label);
}
this.container.appendChild(this.successDiv);
this.container.appendChild(this.errorDiv);
this.container.appendChild(this.patchDiv);
this.container.appendChild(saveButton);
document.body.appendChild(this.container);
}
destroyUI() {
if (this.hasOwnProperty("container"))
this.container.remove();
}
loadBuffer(buffer) {
this.dllFile = new Uint8Array(buffer);
if(this.validatePatches()) {
this.successDiv.classList.remove("hidden");
this.successDiv.innerHTML = "File loaded successfully!";
} else {
this.successDiv.classList.add("hidden");
}
// Update save button regardless
this.saveButton.disabled = false;
this.saveButton.textContent = 'Save Patched File';
this.errorDiv.innerHTML = this.errorLog;
}
loadFile(file) {
var reader = new FileReader();
var self = this;
reader.onload = function(e) {
self.loadBuffer(e.target.result);
self.updatePatchUI();
};
reader.readAsArrayBuffer(file);
}
downloadURI(uri, filename) {
// http://stackoverflow.com/a/18197341
var element = document.createElement('a');
element.setAttribute('href', uri);
element.setAttribute('download', filename);
element.style.display = 'none';
document.body.appendChild(element);
element.click();
document.body.removeChild(element);
}
saveDll() {
if(!this.dllFile || !this.mods || !this.filename)
return;
for(var i = 0; i < this.mods.length; i++) {
this.mods[i].applyPatch(this.dllFile);
}
var blob = new Blob([this.dllFile], {type: "application/octet-stream"});
var uri = URL.createObjectURL(blob);
this.downloadURI(uri, this.filename);
URL.revokeObjectURL(uri);
}
loadPatchUI() {
for(var i = 0; i < this.mods.length; i++) {
this.mods[i].createUI(this.patchDiv);
}
}
updatePatchUI() {
for(var i = 0; i < this.mods.length; i++) {
this.mods[i].updateUI(this.dllFile);
}
}
validatePatches() {
this.errorLog = "";
var success = true;
this.validPatches = 0;
this.totalPatches = this.mods.length;
for(var i = 0; i < this.mods.length; i++) {
var error = this.mods[i].validatePatch(this.dllFile);
if(error) {
this.errorLog += error + "<br/>";
success = false;
} else {
this.validPatches++;
}
}
return success;
}
}
window.Patcher = Patcher;
window.PatchContainer = PatchContainer;
})(window, document);