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unzip does not support >65,535 files

See original GitHub issue

Issue Description

How to reproduce

If you try to unzip or unzipSync a zip file containing >65,535 files, only 65,535 files will be listed.

For example:

// Load zip file containing 100,000 files into ArrayBuffer
const zipArray = new Uint8Array(zipBuffer);
const files = unzipSync(zipArray);

console.log(Object.keys(files).length) // 65535

The problem

This issue occurs without any error messages, the number of files is simply truncated to 65,535.

Issue Analytics

  • State:closed
  • Created 6 months ago
  • Comments:5 (3 by maintainers)

github_iconTop GitHub Comments

4reactions
101arrowzcommented, Jul 8, 2022

fflate isn’t looking at the Zip64 end-of-central-directory record so it can only use the number of files given in the standard 16-bit EOCD record. This should be fixable, I’ll look into it.

3reactions
101arrowzcommented, Oct 1, 2022

Fixed in v0.7.4. Sorry for the long delay!

Read more comments on GitHub >

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