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<!DOCTYPE html>
<html>
<!--
Copyright 2011 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<title>goog.crypt.BlobHasher</title>
<script src="../base.js"></script>
<script>
goog.require('goog.crypt');
goog.require('goog.crypt.BlobHasher');
goog.require('goog.crypt.Md5');
</script>
<link rel="stylesheet" href="css/demo.css">
</head>
<body>
<h1>goog.crypt.BlobHasher</h1>
<table>
<tr><td>File:</td><td>
<input type="file" onchange="computeMD5(this.files[0]);">
<input type="button" value="Abort" onclick="abort();">
</td></tr>
<tr><td>MD5:</td><td><div id="output" style="font-family:courier new,fixed" /></td></tr>
</table>
<script>
var hashFn = new goog.crypt.Md5();
var blobHasher = new goog.crypt.BlobHasher(hashFn);
var startTime = 0;
function computeMD5(file) {
goog.events.listen(blobHasher, goog.crypt.BlobHasher.EventType.COMPLETE,
function() {
var hash = goog.crypt.byteArrayToHex(blobHasher.getHash());
var time = goog.now() - startTime;
display(hash + ' (' + time/1000 + 's)');
});
goog.events.listen(blobHasher, goog.crypt.BlobHasher.EventType.ABORT,
function() {
display('Aborted');
});
display('Computing...');
startTime = goog.now();
blobHasher.hash(file);
}
function abort() {
blobHasher.abort();
}
function display(message) {
document.getElementById('output').innerHTML = message;
}
</script>
</body>
</html>
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