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dom/workers/test/fileReadSlice_worker.js@97036ab72558

dom/workers/test/fileReadSlice_worker.js

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /**

  * Expects an object containing a blob, a start index and an end index

  * for slicing. Returns the contents of the blob read as text.

  */

 onmessage = function(event) {

   var blob = event.data.blob;

   var start = event.data.start;

   var end = event.data.end;

   var slicedBlob = blob.slice(start, end);

   var fileReader = new FileReaderSync();

   var text = fileReader.readAsText(slicedBlob);

   postMessage(text);

 };