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https://issues.apache.org/jira/browse/COMPRESS-682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17866970#comment-17866970
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Benjamin Marwell commented on COMPRESS-682:
-------------------------------------------
This one is created with additional --no-compress parameter:
[^empty-file-uncompressed-no-compress.xar]
{code:java}
$ xar --distribution --no-compress ".*" --compression none --prop-exclude
uid,user,username -cf empty-file-uncompressed-no-compress.xar empty
$ file empty-file-uncompressed-no-compress.xar
empty-file-uncompressed-no-compress.xar: xar archive compressed TOC: 314, SHA-1
checksum
$ xar -tvf empty-file-uncompressed-no-compress.xar
-rw-r--r-- unknown/unknown 1 1970-01-01 00:00:00 empty{code}
However, the username is not excluded in this case. --no-compress takes a posix
regex.
> Support XAR archive format
> --------------------------
>
> Key: COMPRESS-682
> URL: https://issues.apache.org/jira/browse/COMPRESS-682
> Project: Commons Compress
> Issue Type: Improvement
> Components: Archivers
> Affects Versions: 1.26.2
> Reporter: Andres Almiray
> Priority: Major
> Attachments: empty-file-uncompressed-no-compress.xar,
> empty-file-uncompressed.xar
>
>
> The XAR archive format definition can be found at
> [https://en.wikipedia.org/wiki/Xar_(archiver)]
>
> There are a couple of Java based implementations but they seem to be no
> longer maintained. Also, they have external dependencies that may no longer
> be required if relying in JDK utility classes and facilities exposed by
> commons-compress
>
> [https://github.com/sprylab/xar] is ASL 2.0
> [https://github.com/gino0631/xar] is LGPL 3.0
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