Get size

[ghigt]

Hi,

How could I get the size of each files inside a zip after a.load?

[dduponchel]

Sorry, I was sure I added a comment some days ago...

You can't with the current version. This information is stored in _data.compressedSize (like in zip.file("...")._data.compressedSize) but this is not a public API and it can/will change without notice.

It sounds interesting, we should maybe add a way to extract cleanly these informations.

[ghigt]

For now I compute the size based on the base64 data (base64.length * 0.75). It's seems right but I find that a bit hacky. Thanks for the answer and your work.

[mhirsch]

zip.file("...")._data.compressedSize is no longer accessible with the latest version. Is there any other way to access the size of the file in browser memory?

[pheliperocha]

One way is to use the forEach method JSZip#forEach(callback)

like:

let size = 0;
zip.forEach((file) => size += file ? 1 : 0);

[Noitidart]

I also needed this so I can set content-length:

res.writeHead(200, {
    'Content-Type': 'application/zip',
    'Content-Length': size // typically got with fs.stat
});

[sirarifarid]

just convert it to blob

[salauddinn]

Converting it to blob is not efficient. just need to get the size from the metadata of that file. Please suggest better approach without affecting the performence