TT's Zip Archive Package can now read Apple's > 4GB zips

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http://files.tempel.org/RB/About%20Zip%20Package.html

I recently improved my Zip classes for Xojo so that they can read zip files that are created by Finder (or by Apple’s “ditto” tool) and are over 4 GB in size.

Most unzip apps, including the ones on macOS and Linux, can’t unzip these, but my code can, now.

It may even be able to write them back out, but I haven’t tested that thoroughly, yet (you’re welcome to try and report back to me).

I have not released that new version, yet, because, well, it’s not too well tested, but it did well enough for the recent need I made it for.

Is there anyone here who uses my code and needs this? And would do some more testing? Then get in contact, please, or comment here.

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I used to use your Zip code, but have moved to MBS to get files > 4GB. I still have two issues that I hope you have resolved:

  1. Can you add an empty folder (my zip files ignore, and thus leave out, empty folders)?
  2. Can you add an alias to a zip file (my zip files resolve all aliases)?
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Can you add an empty folder

I handle this in one of two ways
1/ When the app starts if a folder doesnt exist, I create it
or
2/ Have a 1byte info.txt file in the folder to force it to be created

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We have >2 GB in MBS for a long time.
But not all applications understand the 64-bit extension for zip format.

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By using the zip64 format, or can the MBS plugin also decode Apple ditto’s large zips? Mine can the latter but not the former.

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You mean when creating Zip files? Not sure, but shouldn’t be difficult to do.

Yes, by using the MacBinary option when adding that particular item.