eaglercraft/ayunWebEPK
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Implement new EPK format

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ayunami2000 2022-08-12 20:21:14 -04:00
parent 8cd5d7ea3b
commit 84d25525b1
1 changed files with 133 additions and 11 deletions
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144
index.html
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@ -25,17 +25,63 @@
input[disabled] { input[disabled] {
opacity: 0.8; opacity: 0.8;
} }
::file-selector-button, progress { input[type=checkbox] {
-webkit-appearance: initial;
-moz-appearance: initial;
appearance: initial;
width: 1.5em;
height: 1.5em;
margin: 0;
}
input[type=checkbox]:checked {
background-color: #eeeeee;
}
input[type=checkbox]:before {
content: ':>';
text-align: center;
color: #dddddd;
margin-left: 0.3em;
}
input[type=checkbox]:checked:before {
color: #343434;
}
input[type=checkbox]:after {
content: 'No';
color: #dddddd;
margin-left: 0.6em;
}
input[type=checkbox]:checked:after {
content: 'Yes';
}
@supports (-webkit-touch-callout: none) or (background: -webkit-named-image(i)) {
input[type=checkbox]:after {
content: 'no';
}
input[type=checkbox]:checked:after {
content: 'yes';
}
}
@supports (-moz-appearance: none) {
input[type=checkbox]:after {
content: 'No.';
}
input[type=checkbox]:checked:after {
content: 'Yes.';
}
}
::file-selector-button, progress, input[type=checkbox] {
background-color: #343434; background-color: #343434;
color: #eeeeee; color: #eeeeee;
border: 1px solid #eeeeee; border: 1px solid #eeeeee;
border-radius: 4px; border-radius: 4px;
} }
a, input { a, input[type=file] {
color: #dddddd; color: #dddddd;
} }
progress { progress {
height: 1em; height: 1em;
}
progress, ::-webkit-file-upload-button {
-webkit-appearance: none; -webkit-appearance: none;
-moz-appearance: none; -moz-appearance: none;
appearance: none; appearance: none;
@ -58,6 +104,8 @@
<body> <body>
<h1>ayunWebEPK</h1> <h1>ayunWebEPK</h1>
<p>Compile EPK files in your browser!</p> <p>Compile EPK files in your browser!</p>
Use legacy format: <input type="checkbox"/>
<br/>
Select resources folder: <input type="file" onchange="selectFile(this);" directory webkitdirectory/> Select resources folder: <input type="file" onchange="selectFile(this);" directory webkitdirectory/>
<br/> <br/>
<i>~or~</i> <i>~or~</i>
@ -65,11 +113,39 @@
Select .ZIP archive of resources: <input type="file" onchange="selectFile(this);" accept=".zip"/> Select .ZIP archive of resources: <input type="file" onchange="selectFile(this);" accept=".zip"/>
<br/> <br/>
<progress value="0" max="1"></progress> <progress value="0" max="1"></progress>
<a download="assets.epk">Download your EPK!</a> <a download="my-cool.epk">Download your EPK!</a>
<script> <script>
// https://stackoverflow.com/a/18639903/6917520
const crc32 = (function() {
let table = new Uint32Array(256);
for (let i = 256; i--;) {
let tmp = i;
for (let k = 8; k--;) {
tmp = tmp & 1 ? 3988292384 ^ tmp >>> 1 : tmp >>> 1;
}
table[i] = tmp;
}
return function(data) {
let crc = -1;
for (let i = 0, l = data.length; i < l; i++) {
crc = crc >>> 8 ^ table[crc & 255 ^ data[i]];
}
return (crc ^ -1) >>> 0;
};
})();
const downloadLink = document.querySelector('a'); const downloadLink = document.querySelector('a');
const progressBar = document.querySelector('progress'); const progressBar = document.querySelector('progress');
const fileElems = document.querySelectorAll('input[type=file]'); const fileElems = document.querySelectorAll('input[type=file]');
const oldBox = document.querySelector('input[type=checkbox]');
function concatTypedArrays(a, b) { function concatTypedArrays(a, b) {
const c = new (a.constructor)(a.length + b.length); const c = new (a.constructor)(a.length + b.length);
@ -93,6 +169,9 @@
} }
const textEncoder = new TextEncoder(); const textEncoder = new TextEncoder();
function generateLongArray(num) {
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);
}
function generateIntArray(num) { function generateIntArray(num) {
return Uint8Array.of((num >>> 24) & 0xFF, (num >>> 16) & 0xFF, (num >>> 8) & 0xFF, num & 0xFF); return Uint8Array.of((num >>> 24) & 0xFF, (num >>> 16) & 0xFF, (num >>> 8) & 0xFF, num & 0xFF);
} }
@ -102,17 +181,37 @@
function generateUTF(str) { function generateUTF(str) {
return concatTypedArrays(generateShortArray(str.length), textEncoder.encode(str)); return concatTypedArrays(generateShortArray(str.length), textEncoder.encode(str));
} }
function generateUTFByte(str) {
return concatTypedArrays(Uint8Array.of(str.length), textEncoder.encode(str));
}
let comment = '# eaglercraft package file - generated with ayunWebEPK by ayunami2000'; let comment = '# eaglercraft package file - generated with ayunWebEPK by ayunami2000';
let commentNew = '\n\n # Eagler EPK v2.0 (c) $$YEAR$$ Calder Young\n # generated with ayunWebEPK by ayunami2000';
let baseEPK = textEncoder.encode('EAGPKG!!'); let baseEPK = textEncoder.encode('EAGPKG!!');
baseEPK = concatTypedArrays(baseEPK, generateUTF(comment)); baseEPK = concatTypedArrays(baseEPK, generateUTF(comment));
let baseEPKNew = textEncoder.encode('EAGPKG$$');
baseEPKNew = concatTypedArrays(baseEPKNew, generateUTFByte('ver2.0'));
baseEPKNew = concatTypedArrays(baseEPKNew, generateUTFByte('my-cool.epk'));
let currentEPK = null; let currentEPK = null;
function selectFile(fileElem) { function selectFile(fileElem) {
downloadLink.removeAttribute('href'); downloadLink.removeAttribute('href');
fileElems.forEach(elem => elem.disabled = true); fileElems.forEach(elem => elem.disabled = true);
oldBox.disabled = true;
if (!oldBox.checked) {
currentEPK = textEncoder.encode('HEAD');
currentEPK = concatTypedArrays(currentEPK, generateUTFByte('file-type'));
const fileType = 'epk/resources';
currentEPK = concatTypedArrays(currentEPK, generateIntArray(fileType.length));
currentEPK = concatTypedArrays(currentEPK, textEncoder.encode(fileType));
currentEPK = concatTypedArrays(currentEPK, Uint8Array.of(62));
}
if (fileElem.files.length == 1) { if (fileElem.files.length == 1) {
const zipFile = fileElem.files[0]; const zipFile = fileElem.files[0];
const reader = new FileReader(); const reader = new FileReader();
@ -158,22 +257,44 @@
reader.readAsArrayBuffer(file); reader.readAsArrayBuffer(file);
} }
} else { } else {
currentEPK = null;
fileElems.forEach(elem => elem.removeAttribute('disabled')); fileElems.forEach(elem => elem.removeAttribute('disabled'));
oldBox.removeAttribute('disabled');
} }
} }
function processFile(name, file) { function processFile(name, file) {
currentEPK = currentEPK == null ? generateUTF('<file>') : concatTypedArrays(currentEPK, generateUTF('<file>')); if (oldBox.checked) {
currentEPK = concatTypedArrays(currentEPK, generateUTF(name)); currentEPK = currentEPK == null ? generateUTF('<file>') : concatTypedArrays(currentEPK, generateUTF('<file>'));
currentEPK = concatTypedArrays(currentEPK, new Uint8Array(sha1.arrayBuffer(file.buffer))); currentEPK = concatTypedArrays(currentEPK, generateUTF(name));
currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.length)); currentEPK = concatTypedArrays(currentEPK, new Uint8Array(sha1.arrayBuffer(file.buffer)));
currentEPK = concatTypedArrays(currentEPK, file); currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.byteLength));
currentEPK = concatTypedArrays(currentEPK, generateUTF('</file>')); currentEPK = concatTypedArrays(currentEPK, file);
currentEPK = concatTypedArrays(currentEPK, generateUTF('</file>'));
} else {
currentEPK = concatTypedArrays(currentEPK, textEncoder.encode('FILE'));
currentEPK = concatTypedArrays(currentEPK, generateUTFByte(name));
currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.byteLength + 5));
currentEPK = concatTypedArrays(currentEPK, generateIntArray(crc32(file)));
currentEPK = concatTypedArrays(currentEPK, file);
currentEPK = concatTypedArrays(currentEPK, textEncoder.encode(':>'));
}
} }
function wrapItUp(fileElem) { function wrapItUp(fileElem) {
currentEPK = concatTypedArrays(currentEPK, generateUTF(' end')); if (oldBox.checked) {
currentEPK = concatTypedArrays(baseEPK, new Uint8Array(pako.deflate(currentEPK, { level: 9 }))); currentEPK = concatTypedArrays(currentEPK, generateUTF(' end'));
currentEPK = concatTypedArrays(baseEPK, new Uint8Array(pako.deflate(currentEPK, { level: 9 })));
} else {
let currBaseEPK = baseEPKNew;
currBaseEPK = concatTypedArrays(currBaseEPK, generateUTF(commentNew.replace('$$YEAR$$', new Date().getFullYear())));
currBaseEPK = concatTypedArrays(currBaseEPK, generateLongArray(Date.now()));
currBaseEPK = concatTypedArrays(currBaseEPK, generateIntArray(progressBar.max + 1));
currBaseEPK = concatTypedArrays(currBaseEPK, Uint8Array.of(90));
currentEPK = concatTypedArrays(currentEPK, textEncoder.encode('END$'));
currentEPK = concatTypedArrays(currBaseEPK, new Uint8Array(pako.deflate(currentEPK, { level: 9 })));
currentEPK = concatTypedArrays(currentEPK, textEncoder.encode(':::YEE:>'));
}
const blob = new Blob([ currentEPK ], { type: 'application/octet-stream' }); const blob = new Blob([ currentEPK ], { type: 'application/octet-stream' });
downloadLink.href = window.URL.createObjectURL(blob); downloadLink.href = window.URL.createObjectURL(blob);
currentEPK = null; currentEPK = null;
@ -181,6 +302,7 @@
progressBar.value = 0; progressBar.value = 0;
progressBar.max = 1; progressBar.max = 1;
fileElems.forEach(elem => elem.removeAttribute('disabled')); fileElems.forEach(elem => elem.removeAttribute('disabled'));
oldBox.removeAttribute('disabled');
} }
</script> </script>
</body> </body>