mirror of
https://github.com/ayunami2000/ayunWebEPK.git
synced 2024-11-21 10:16:04 -08:00
Implement new EPK format
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ayunami2000
parent
8cd5d7ea3b
commit
84d25525b1
130
index.html
130
index.html
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@ -25,17 +25,63 @@
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input[disabled] {
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opacity: 0.8;
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}
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::file-selector-button, progress {
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input[type=checkbox] {
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-webkit-appearance: initial;
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-moz-appearance: initial;
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appearance: initial;
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width: 1.5em;
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height: 1.5em;
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margin: 0;
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}
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input[type=checkbox]:checked {
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background-color: #eeeeee;
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}
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input[type=checkbox]:before {
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content: ':>';
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text-align: center;
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color: #dddddd;
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margin-left: 0.3em;
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}
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input[type=checkbox]:checked:before {
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color: #343434;
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}
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input[type=checkbox]:after {
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content: 'No';
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color: #dddddd;
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margin-left: 0.6em;
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}
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input[type=checkbox]:checked:after {
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content: 'Yes';
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}
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@supports (-webkit-touch-callout: none) or (background: -webkit-named-image(i)) {
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input[type=checkbox]:after {
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content: 'no';
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}
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input[type=checkbox]:checked:after {
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content: 'yes';
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}
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}
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@supports (-moz-appearance: none) {
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input[type=checkbox]:after {
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content: 'No.';
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}
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input[type=checkbox]:checked:after {
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content: 'Yes.';
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}
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}
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::file-selector-button, progress, input[type=checkbox] {
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background-color: #343434;
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color: #eeeeee;
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border: 1px solid #eeeeee;
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border-radius: 4px;
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}
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a, input {
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a, input[type=file] {
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color: #dddddd;
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}
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progress {
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height: 1em;
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}
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progress, ::-webkit-file-upload-button {
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-webkit-appearance: none;
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-moz-appearance: none;
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appearance: none;
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@ -58,6 +104,8 @@
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<body>
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<h1>ayunWebEPK</h1>
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<p>Compile EPK files in your browser!</p>
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Use legacy format: <input type="checkbox"/>
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<br/>
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Select resources folder: <input type="file" onchange="selectFile(this);" directory webkitdirectory/>
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<br/>
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<i>~or~</i>
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@ -65,11 +113,39 @@
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Select .ZIP archive of resources: <input type="file" onchange="selectFile(this);" accept=".zip"/>
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<br/>
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<progress value="0" max="1"></progress>
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<a download="assets.epk">Download your EPK!</a>
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<a download="my-cool.epk">Download your EPK!</a>
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<script>
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// https://stackoverflow.com/a/18639903/6917520
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const crc32 = (function() {
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let table = new Uint32Array(256);
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for (let i = 256; i--;) {
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let tmp = i;
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for (let k = 8; k--;) {
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tmp = tmp & 1 ? 3988292384 ^ tmp >>> 1 : tmp >>> 1;
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}
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table[i] = tmp;
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}
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return function(data) {
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let crc = -1;
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for (let i = 0, l = data.length; i < l; i++) {
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crc = crc >>> 8 ^ table[crc & 255 ^ data[i]];
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}
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return (crc ^ -1) >>> 0;
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};
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})();
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const downloadLink = document.querySelector('a');
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const progressBar = document.querySelector('progress');
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const fileElems = document.querySelectorAll('input[type=file]');
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const oldBox = document.querySelector('input[type=checkbox]');
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function concatTypedArrays(a, b) {
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const c = new (a.constructor)(a.length + b.length);
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@ -93,6 +169,9 @@
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}
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const textEncoder = new TextEncoder();
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function generateLongArray(num) {
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return Uint8Array.of((num >>> 56) & 0xFF, (num >>> 48) & 0xFF, (num >>> 40) & 0xFF, (num >>> 32) & 0xFF, (num >>> 24) & 0xFF, (num >>> 16) & 0xFF, (num >>> 8) & 0xFF, num & 0xFF);
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}
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function generateIntArray(num) {
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return Uint8Array.of((num >>> 24) & 0xFF, (num >>> 16) & 0xFF, (num >>> 8) & 0xFF, num & 0xFF);
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}
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@ -102,17 +181,37 @@
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function generateUTF(str) {
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return concatTypedArrays(generateShortArray(str.length), textEncoder.encode(str));
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}
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function generateUTFByte(str) {
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return concatTypedArrays(Uint8Array.of(str.length), textEncoder.encode(str));
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}
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let comment = '# eaglercraft package file - generated with ayunWebEPK by ayunami2000';
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let commentNew = '\n\n # Eagler EPK v2.0 (c) $$YEAR$$ Calder Young\n # generated with ayunWebEPK by ayunami2000';
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let baseEPK = textEncoder.encode('EAGPKG!!');
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baseEPK = concatTypedArrays(baseEPK, generateUTF(comment));
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let baseEPKNew = textEncoder.encode('EAGPKG$$');
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baseEPKNew = concatTypedArrays(baseEPKNew, generateUTFByte('ver2.0'));
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baseEPKNew = concatTypedArrays(baseEPKNew, generateUTFByte('my-cool.epk'));
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let currentEPK = null;
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function selectFile(fileElem) {
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downloadLink.removeAttribute('href');
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fileElems.forEach(elem => elem.disabled = true);
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oldBox.disabled = true;
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if (!oldBox.checked) {
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currentEPK = textEncoder.encode('HEAD');
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currentEPK = concatTypedArrays(currentEPK, generateUTFByte('file-type'));
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const fileType = 'epk/resources';
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currentEPK = concatTypedArrays(currentEPK, generateIntArray(fileType.length));
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currentEPK = concatTypedArrays(currentEPK, textEncoder.encode(fileType));
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currentEPK = concatTypedArrays(currentEPK, Uint8Array.of(62));
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}
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if (fileElem.files.length == 1) {
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const zipFile = fileElem.files[0];
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const reader = new FileReader();
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@ -158,22 +257,44 @@
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reader.readAsArrayBuffer(file);
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}
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} else {
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currentEPK = null;
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fileElems.forEach(elem => elem.removeAttribute('disabled'));
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oldBox.removeAttribute('disabled');
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}
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}
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function processFile(name, file) {
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if (oldBox.checked) {
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currentEPK = currentEPK == null ? generateUTF('<file>') : concatTypedArrays(currentEPK, generateUTF('<file>'));
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currentEPK = concatTypedArrays(currentEPK, generateUTF(name));
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currentEPK = concatTypedArrays(currentEPK, new Uint8Array(sha1.arrayBuffer(file.buffer)));
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currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.length));
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currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.byteLength));
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currentEPK = concatTypedArrays(currentEPK, file);
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currentEPK = concatTypedArrays(currentEPK, generateUTF('</file>'));
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} else {
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currentEPK = concatTypedArrays(currentEPK, textEncoder.encode('FILE'));
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currentEPK = concatTypedArrays(currentEPK, generateUTFByte(name));
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currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.byteLength + 5));
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currentEPK = concatTypedArrays(currentEPK, generateIntArray(crc32(file)));
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currentEPK = concatTypedArrays(currentEPK, file);
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currentEPK = concatTypedArrays(currentEPK, textEncoder.encode(':>'));
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}
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}
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function wrapItUp(fileElem) {
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if (oldBox.checked) {
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currentEPK = concatTypedArrays(currentEPK, generateUTF(' end'));
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currentEPK = concatTypedArrays(baseEPK, new Uint8Array(pako.deflate(currentEPK, { level: 9 })));
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} else {
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let currBaseEPK = baseEPKNew;
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currBaseEPK = concatTypedArrays(currBaseEPK, generateUTF(commentNew.replace('$$YEAR$$', new Date().getFullYear())));
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currBaseEPK = concatTypedArrays(currBaseEPK, generateLongArray(Date.now()));
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currBaseEPK = concatTypedArrays(currBaseEPK, generateIntArray(progressBar.max + 1));
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currBaseEPK = concatTypedArrays(currBaseEPK, Uint8Array.of(90));
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currentEPK = concatTypedArrays(currentEPK, textEncoder.encode('END$'));
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currentEPK = concatTypedArrays(currBaseEPK, new Uint8Array(pako.deflate(currentEPK, { level: 9 })));
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currentEPK = concatTypedArrays(currentEPK, textEncoder.encode(':::YEE:>'));
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}
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const blob = new Blob([ currentEPK ], { type: 'application/octet-stream' });
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downloadLink.href = window.URL.createObjectURL(blob);
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currentEPK = null;
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@ -181,6 +302,7 @@
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progressBar.value = 0;
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progressBar.max = 1;
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fileElems.forEach(elem => elem.removeAttribute('disabled'));
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oldBox.removeAttribute('disabled');
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}
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</script>
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</body>
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