bz2/index.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>BZ2 Test</title>
<style>
#drop {
border: 2px dashed #bbb;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
padding: 25px;
text-align: center;
font: 20pt bold, "Vollkorn";
color: #bbb;
}
</style>
</head>
<body>
<h1>bz2 Live Demo</h1>
<h5>This demo decompresses bz2 archives in your web browser. No data is sent to an external server.</h5>
<a href="https://github.com/sheetjs/bz2">Source code on GitHub</a>
<div id="drop">
<p>Drag a bzip2 file into this area to see the contents</p>
</div>
<input type="checkbox" id="download"> Download decompressed output (Recommended for .tar.bz2 and other compressed binary data)
<pre id="out"></pre>
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<script src="https://unpkg.com/bz2"></script>
<script>
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document.querySelector('#drop').addEventListener('drop', (event) => {
event.preventDefault();
let file;
if (event.dataTransfer.items) {
file = event.dataTransfer.items[0].getAsFile();
} else {
file = event.dataTransfer.files[0];
}
const download = document.querySelector('#download').checked;
const reader = new FileReader();
reader.addEventListener('load', (e) => {
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const bytes = window.bz2.decompress(new Uint8Array(reader.result));
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const result = new TextDecoder('utf8').decode(bytes);
if (download) {
const blob = new Blob([result], { type: 'application/octet-stream' });
document.location = URL.createObjectURL(blob);
} else {
document.querySelector('#out').textContent = result;
}
});
reader.readAsArrayBuffer(file);
});
document.querySelector('#drop').addEventListener('dragover', (event) => {
event.preventDefault();
});
</script>
</body>
</html>