You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@commons.apache.org by "Gaël Lalire (Jira)" <ji...@apache.org> on 2021/04/15 17:30:00 UTC
[jira] [Updated] (COMPRESS-574) Byte range support in archive
creation
[ https://issues.apache.org/jira/browse/COMPRESS-574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gaël Lalire updated COMPRESS-574:
---------------------------------
Attachment: (was: DynamicZip.java)
> 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.
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)