eaglercraft/ayunWebEPK
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ayunami2000 2022-07-26 13:16:23 -04:00
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# Auto detect text files and perform LF normalization
* text=auto

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BSD 3-Clause License
Copyright (c) 2022, ayunami2000
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# ayunWebEPK
Compile EPK files in your browser!

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>ayunWebEPK</title>
<script type="text/javascript" src="jszip.min.js"></script>
<script type="text/javascript" src="pako_deflate.min.js"></script>
<script type="text/javascript" src="sha1.min.js"></script>
<link rel="preconnect" href="https://fonts.googleapis.com"/>
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin/>
<link href="https://fonts.googleapis.com/css2?family=Nunito&display=swap" rel="stylesheet"/>
<style>
a:not([href]) {
display: none;
}
*, ::file-selector-button {
font-family: 'Nunito', sans-serif;
}
body {
background-color: #111111;
color: #dddddd;
}
input[disabled] {
opacity: 0.8;
}
::file-selector-button, progress {
background-color: #343434;
color: #eeeeee;
border: 1px solid #eeeeee;
border-radius: 4px;
}
a, input {
color: #dddddd;
}
progress {
height: 1em;
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
}
progress[value="0"][max="1"] {
display: none;
}
::-moz-progress-bar {
background-color: #eeeeee;
}
::-webkit-progress-value {
background-color: #eeeeee;
}
::-webkit-progress-bar {
background-color: #343434;
border-radius: 4px;
}
</style>
</head>
<body>
<h1>ayunWebEPK</h1>
<p>Compile EPK files in your browser!</p>
Select .ZIP archive: <input type="file" onchange="selectFile(this);"/>
<br/>
Select resources folder: <input type="file" onchange="selectFile(this);" directory webkitdirectory/>
<br/>
<progress value="0" max="1"></progress>
<a download="assets.epk">Download your EPK!</a>
<script>
const downloadLink = document.querySelector('a');
const progressBar = document.querySelector('progress');
const fileElems = document.querySelectorAll('input[type=file]');
function concatTypedArrays(a, b) {
const c = new (a.constructor)(a.length + b.length);
c.set(a, 0);
c.set(b, a.length);
return c;
}
const textEncoder = new TextEncoder();
function generateIntArray(num) {
return Uint8Array.of((num >>> 24) & 0xFF, (num >>> 16) & 0xFF, (num >>> 8) & 0xFF, num & 0xFF);
}
function generateShortArray(num) {
return Uint8Array.of((num >>> 8) & 0xFF, num & 0xFF);
}
function generateUTF(str) {
return concatTypedArrays(generateShortArray(str.length), textEncoder.encode(str));
}
let comment = '# eaglercraft package file - generated with ayunWebEPK by ayunami2000';
let baseEPK = textEncoder.encode('EAGPKG!!');
baseEPK = concatTypedArrays(baseEPK, generateUTF(comment));
let currentEPK = null;
function selectFile(fileElem) {
downloadLink.removeAttribute('href');
fileElems.forEach(elem => elem.disabled = true);
if (fileElem.files.length == 1) {
const zipFile = fileElem.files[0];
var reader = new FileReader();
reader.onload = function(e) {
const zip = new JSZip();
zip.loadAsync(e.target.result).then(function(zip) {
progressBar.max = Object.keys(zip.files).length;
let i = 0;
for (let fileName in zip.files) {
if (fileName.endsWith('/')) {
progressBar.value = i++;
if (i == progressBar.max) {
wrapItUp(fileElem);
}
continue;
}
zip.files[fileName].async('uint8array').then(function(data) {
processFile(fileName, data);
progressBar.value = i++;
if (i == progressBar.max) {
wrapItUp(fileElem);
}
});
}
});
};
reader.readAsArrayBuffer(zipFile);
} else if (fileElem.files.length > 1) {
progressBar.max = fileElem.files.length;
let i = 0;
for (let file of fileElem.files) {
var reader = new FileReader();
reader.onload = function(e) {
processFile(file.webkitRelativePath.slice(file.webkitRelativePath.indexOf('/') + 1), new Uint8Array(e.target.result));
progressBar.value = i++;
if (i == progressBar.max) {
wrapItUp(fileElem);
}
};
reader.readAsArrayBuffer(file);
}
} else {
fileElems.forEach(elem => elem.removeAttribute('disabled'));
}
}
function processFile(name, file) {
currentEPK = currentEPK == null ? generateUTF('<file>') : concatTypedArrays(currentEPK, generateUTF('<file>'));
currentEPK = concatTypedArrays(currentEPK, generateUTF(name));
currentEPK = concatTypedArrays(currentEPK, new Uint8Array(sha1.arrayBuffer(file.buffer)));
currentEPK = concatTypedArrays(currentEPK, generateIntArray(file.length));
currentEPK = concatTypedArrays(currentEPK, file);
currentEPK = concatTypedArrays(currentEPK, generateUTF('</file>'));
}
function wrapItUp(fileElem) {
currentEPK = concatTypedArrays(currentEPK, generateUTF(' end'));
currentEPK = concatTypedArrays(baseEPK, new Uint8Array(pako.deflate(currentEPK, { level: 9 })));
const blob = new Blob([ currentEPK ], { type: 'application/octet-stream' });
downloadLink.href = window.URL.createObjectURL(blob);
currentEPK = null;
fileElem.value = '';
progressBar.value = 0;
progressBar.max = 1;
fileElems.forEach(elem => elem.removeAttribute('disabled'));
}
</script>
</body>
</html>

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