Re^2: Archive::Zip Modify Date Oddity

Thank you for sharing the info. If this is to mimic windows time stamp, it is not desirable. Further test verified it does round down the original file Modify date to lower even-seconds.
It is not the case when tested using Windows GUI or Unix Shell from Perl to zip file, it does not modify the original Modify date of the file.
As such I have submitted an enhancement request to the Archive::Zip Library in cspan.org for ZIP64 support for higher-resolution NTFS or Unix file timestamps

Comment on Re^2: Archive::Zip Modify Date Oddity

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Re^3: Archive::Zip Modify Date Oddity by pmqs (Friar) on Jan 04, 2017 at 10:46 UTC
Zip64 support doesn't have anything to do with the granularity of the timestamp recorded in the zip file. It just allows file larger than 4Gig to be stored in a zip archive. The two second time granularity is dealt with in modern zip implementations by storing an extended timestamp field. Archive::Zip::SimpleZip supports this field.	[reply]
Re^4: Archive::Zip Modify Date Oddity by lhchin (Novice) on Jan 05, 2017 at 08:34 UTC
Thank you for the info. SimpleZip is not install as basic Perl Library. Alternatively running the shell Zip command within Perl handles the Modify date correctly, which is a simpler solution.	[reply]
Re^5: Archive::Zip Modify Date Oddity by pmqs (Friar) on Jan 05, 2017 at 09:13 UTC
SimpleZip is just a wrapper around IO::Compress::Zip. IO::Compress::Zip is a core library and also supports the extended timestamp.	[reply]
Re^6: Archive::Zip Modify Date Oddity by lhchin (Novice) on Jan 06, 2017 at 02:53 UTC
Re^7: Archive::Zip Modify Date Oddity by pmqs (Friar) on Jan 06, 2017 at 16:20 UTC
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Re^6: Archive::Zip Modify Date Oddity by lhchin (Novice) on Jan 11, 2017 at 00:00 UTC
Re^7: Archive::Zip Modify Date Oddity by pmqs (Friar) on Jan 11, 2017 at 11:05 UTC
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Re^5: Archive::Zip Modify Date Oddity by Corion (Patriarch) on Jan 05, 2017 at 08:38 UTC
Archive::Zip is also not included in the Perl core if that's what you mean. But also see Yes, even you can use CPAN on how you can install modules yourself.	[reply]