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https://issues.apache.org/jira/browse/COMPRESS-574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324146#comment-17324146
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Peter Lee commented on COMPRESS-574:
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Thank you for your explanation.
So you are trying to do something like :
# Picking part of entries from a zip and creating a new zip with these part of
entries.
# Have the ability to read part of raw data from the zip with part of entries.
And you are trying to do these things cause you are using some Amazon cloud
service. Is it?
> 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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