Just for kicks, here it is with a worker thread and File System Access API No idea if either of those things help, I have no 6gb files. This will get the reading off the main thread so that does help performance in some sense. Object.assign( new Worker( URL.createObjectURL( new Blob( [ `self.onmessage = async … Read more
Here is the code I used for Firefox, which is not portable, but works: As OP commented, enablePrivilege() has been deprecated, this should be considered usable. But as my Firefox using previous profile still work with my code, so I dig a little into the prefs.js (as about:config is hiding these settings,) And here is … Read more
This answers shows how to access all of the different parts of the code using jest. However, it doesn’t necessarily mean that one should test all of these parts this way. The code-under-test is essentially the same as in the question except that I have substituted addEventListener(‘load’, … for onload = …, and I have … Read more
If your jar is on the classpath: InputStream is = YourClass.class.getResourceAsStream(“1.txt”); If it is not on the classpath, then you can access it via: URL url = new URL(“jar:file:/absolute/location/of/yourJar.jar!/1.txt”); InputStream is = url.openStream();
I think the cleanest solution would be to change the base64 encoder to operate directly on a Uint8Array instead of a string. Important: You’ll need to set the binaryType of the web socket to “arraybuffer” for this. The onmessage method should look like this: socket.onmessage = function(msg) { var arrayBuffer = msg.data; var bytes = … Read more
I came up with a solution myself which works. function readmultifiles(files) { var reader = new FileReader(); function readFile(index) { if( index >= files.length ) return; var file = files[index]; reader.onload = function(e) { // get file content var bin = e.target.result; // do sth with bin readFile(index+1) } reader.readAsBinaryString(file); } readFile(0); }
You can try using id3 parser on github. Here’s your updated fiddle that logs the tags object in the console With the id3.js included, all you need to do in your code is this: function readFile(){ id3(this.files[0], function(err, tags) { console.log(tags); }) } document.getElementsByTagName(‘input’)[0].addEventListener(‘change’,readFile,false); And here is the tags object as created by id3: { … Read more
Reading happens asynchronously. You need to provide a custom onload callback that defines what should happen when the read completes: $(document).ready(function(){ $(‘#file_input’).on(‘change’, function(e){ readFile(this.files[0], function(e) { // use result in callback… $(‘#output_field’).text(e.target.result); }); }); }); function readFile(file, onLoadCallback){ var reader = new FileReader(); reader.onload = onLoadCallback; reader.readAsText(file); } (See the Fiddle.) Note that readFile does … Read more
If your HTML page is in UTF-8 and your file is in ISO-8859-1. This is working: reader.readAsText(file, ‘ISO-8859-1′); I don’t have any Windows-1251 file so I was not able to test it but it looks like that the ‘CP1251’ is supported (by Google Chrome at least), so: reader.readAsText(file, ‘CP1251’); If none of this is working. … Read more
It is because you’re calling the function onchange. If you upload the same file the value of the file input has not changed from the previous upload and therefore isn’t triggered. This also explains why it works if you upload a different file. No need to clear cache, you can work around this by resetting … Read more