Created
January 13, 2013 15:08
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combining resumable.js with md5spark
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<html> | |
<head> | |
<title>HTML5 File example</title> | |
<STYLE TYPE="text/css"> | |
<!-- | |
TD{font-family: Arial, Helvetica, sans-serif; font-size: 8pt;} | |
---> | |
</STYLE> | |
<style>.example{padding:10px;border:1px solid #ccc}#drop_zone{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}.thumb{height:75px;border:1px solid #000;margin:10px 5px 0 0}#progress_bar{margin:10px 0;padding:3px;border:1px solid #000;font-size:14px;clear:both;opacity:0;-o-transition:opacity 1s linear;-moz-transition:opacity 1s linear;-webkit-transition:opacity 1s linear;-ms-transition:opacity 1s linear}#progress_bar.loading{opacity:1}#progress_bar .percent{background-color:#9cf;height:auto;width:0}#byte_content{margin:5px 0;max-height:100px;overflow-y:auto;overflow-x:hidden}#byte_range{margin-top:5px}</style> | |
<body> | |
<div id="drop_zone">Drop files here or <a href="#" id="browsebutton">click | |
to open file browser</a></div> | |
<output id="list"></output> | |
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> | |
<script type="text/javascript" | |
src="https://raw.github.com/23/resumable.js/master/resumable.js"></script> | |
<script src="https://raw.github.com/satazor/SparkMD5/master/spark-md5.min.js"></script> | |
<script> | |
$(document).ready(function() { | |
var r = new Resumable({ | |
target:'/api/photo/redeem-upload-token', | |
}); | |
// Resumable.js isn't supported, fall back on a different method | |
r.assignBrowse(document.getElementById('browseButton')); | |
r.assignDrop(document.getElementById('drop_zone')); | |
console.log(r); | |
var frOnload = function(e) { | |
console.log("read chunk nr", currentChunk + 1, "of", chunks); | |
spark.append(e.target.result); // append array buffer | |
currentChunk++; | |
if (currentChunk < chunks) { | |
loadNext(); | |
} | |
else { | |
console.log("finished loading"); | |
console.info("computed hash", spark.end()); // compute hash | |
} | |
}, | |
frOnerror = function () { | |
console.warn('oops, something went wrong.'); | |
}; | |
function loadNext(file) { | |
file = file, | |
chunkSize = 2097152, // read in chunks of 2MB | |
chunks = Math.ceil(file.size / chunkSize), | |
currentChunk = 0, | |
spark = new SparkMD5.ArrayBuffer(), | |
fileReader = new FileReader(); | |
fileReader.onload = frOnload; | |
fileReader.onerror = frOnerror; | |
var start = currentChunk * chunkSize, | |
end = ((start + chunkSize) >= file.size) ? file.size : start + chunkSize; | |
console.log(file); | |
var blob = file.file.slice(start, end) | |
fileReader.readAsArrayBuffer(blob); | |
}; | |
r.on('fileAdded', function(file){ | |
loadNext(file); | |
}); | |
}); | |
</script> | |
</body> | |
</html> |
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