A streaming implementation for working with File objects in the browser.
Because the implementations that I found really didn't cut the mustard :/
For usage with Internet Explorer 11, use a 4.x release of filestream
.
Displayed below is an example that uses simple file drag and drop. Rather than immediately displaying the file, the file is piped through a read stream into a write stream and then finally displayed in the browser.
var crel = require('crel');
var detect = require('feature/detect');
var dnd = require('drag-and-drop-files');
var img = crel('img');
var video = crel('video', { autoplay: true });
var FileReadStream = require('filestream/read');
var FileWriteStream = require('filestream/write');
function upload(files) {
var queue = [].concat(files);
function sendNext() {
var writer = new FileWriteStream();
var next = queue.shift();
console.log('sending file');
new FileReadStream(next).pipe(writer).on('file', function(file) {
console.log('file created: ', file);
img.src = detect('URL').createObjectURL(file);
// video.src = detect('URL').createObjectURL(next);
if (queue.length > 0) {
sendNext();
}
});
}
sendNext();
}
dnd(document.body, upload);
document.body.appendChild(crel('style', 'body, html { margin: 0; width: 100%; height: 100% }'));
document.body.appendChild(img);
document.body.appendChild(video);
Copyright (c) 2015 Damon Oehlman [email protected]
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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