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https://issues.apache.org/jira/browse/COMPRESS-380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15839531#comment-15839531
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Dawid Weiss commented on COMPRESS-380:
--------------------------------------
Not necessarily bad wording -- I may be slow in the morning, Stefan, no
worries. Indeed, native ZIP in Java is faster, but it comes with its own
quirks, so not everything is rosy. We use commons-codec as a fallback and I
thought DEFLATE64, even though considered a "proprietary" extension is
widespread enough that it'd be nice to have it for completeness. I assume that
if zlib has public sources to decompress it, the lawyers wouldn't get
involved... (?).
> Support for ENHANCED_DEFLATED (Deflate64) in ZIP files
> ------------------------------------------------------
>
> Key: COMPRESS-380
> URL: https://issues.apache.org/jira/browse/COMPRESS-380
> Project: Commons Compress
> Issue Type: New Feature
> Reporter: Dawid Weiss
>
> Some of the (large) ZIP files we try to process currently will throw this:
> {code}
> UnsupportedZipFeatureException: unsupported feature method
> 'ENHANCED_DEFLATED'
> {code}
> which is a bummer since JDK's implementation also doesn't support Deflate64.
> This seems to be PKWare's extensions, although code to decrypt it exists in
> zlib (and is appropriately licensed, I believe).
> https://github.com/madler/zlib/tree/master/contrib/infback9
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