[jira] [Commented] (COMPRESS-117) Certain tar files won't open

["Sebb (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COMPRESS-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13010084#comment-13010084 ] 

Sebb commented on COMPRESS-117:
-------------------------------

The tar file has no identifying magic string, which is what the matcher is looking for.
What was used to create it?

The file can be read OK with TarArchiveInputStream; the only minor issue is that the file is not auto-recognised.

As a work-round, you could use ArchiveStreamFactory.createArchiveInputStream(String archiverName, InputStream in) to create the reader from the file extension.


> Certain tar files won't open
> ----------------------------
>
>                 Key: COMPRESS-117
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-117
>             Project: Commons Compress
>          Issue Type: Bug
>          Components: Archivers
>    Affects Versions: 1.1
>         Environment: MS Windows Vista, NetBeans IDE
>            Reporter: Leo Izen
>         Attachments: lzma912.tar
>
>
> Certain tar files, like this one: http://leo.scruffohio.net/cgi-bin/uploads/lzma912.tar aren't being recognized by the ArchiveInputStream detector.
> I can open this tar file perfectly well with WinRAR and 7-zip. Neither of these complain. I can also open it with the command tar -xvf. However, I narrowed it down, and it turns out the TarArchiveInputStream.matches() is returning false, even though it is a valid tar file. This glitch should be fixed.

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