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https://issues.apache.org/jira/browse/COMPRESS-574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324467#comment-17324467
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Gaël Lalire commented on COMPRESS-574:
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_> We can avoid creating a file, by creating the zip in memory_
Yes but I mentioned in the description that _if you need an InputStream things
get a lot harder_. I did not enter in the details, maybe you can get it to work
with PipedIS & PipedOS or your own rolling buffer at the cost of one additional
thread. Anyway I did not go that way because of very poor resuming (byte range)
behavior of this solution.
> _With closeArchiveEntry() called ..._
Yes with the hard solution before, this problem is solved. Again byte range
support is poor hence my ticket name.
> Byte range support in archive creation
> --------------------------------------
>
> Key: COMPRESS-574
> URL: https://issues.apache.org/jira/browse/COMPRESS-574
> Project: Commons Compress
> Issue Type: Improvement
> Components: Archivers
> Reporter: Gaël Lalire
> Priority: Minor
> Attachments: DynamicZip.java, DynamicZipTest.java
>
>
> When you have a ZIP which contains _N_ components and you want to let the
> user choose which components it needs, you need to create _2^N - 1_ ZIP.
> So the idea is to store each component once (or twice if you want both
> deflated and stored version), and create the ZIP on the fly.
> For the moment you can stream with a ZipOutputStream but if you need an
> InputStream things get a lot harder. I guess programs are writing the ZIP to
> a file system and read from it after, so not really a streaming anymore.
> Also ZipOutputStream will never allow you to resume from a byte range, you
> need to generate all previous data.
> So I made a class to do that, I think such functionality has its place in
> commons compress.
> You can see my code attached and adapt it for better integration / other
> archive type support or simply to get inspired.
>
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