JUCE doesn't support Zip64

[eyalamir]

Seems like with large zip of above 4gb files, JUCE is unable to extract them.

This was reported multiple times in the forum, with a few suggestions brought up:

juce_ZipFile.cpp - fixed reporting for large file sizes (ZIP64)

I am working with large .zip files - and noticed that the ZipFile class does not correctly interpret ZIP64 header information for large files - specifically the uncompressed size is not reported correctly if over 32-bits - however the field in ZipFile::ZipEntry is specified as 64-bits. My quick/dirty fix is in the attached juce_ZipFile.cpp (23.0 KB) file (modified from JUCE 5.4.7). There is some error checking on size that is not implemented in this fix. Enjoy! Don

Crash in ZipFile when trying to open a large ~6Gb file

The original zip file format only supports files up to 4 GB and 65,535 files. It looks like JUCE creates corrupt zip files if you create them too big, as it casts the 64 bit values to 32 bit and writes them to the file. I suppose this is fairly common and most zip programs can work around it, if you can extract your files. There is a newer zip64 format that juce does not support which does allow for files over 4 GB and total archive size over 4 GB. If you need to support zip files over 4 GB, l…

ZipFile Question

Currently zip does not support the Zip64 format.

If possible, please add support for this.