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From "Emmanuel Bourg (JIRA)" <>
Subject [jira] Commented: (COMPRESS-93) Support for alternative ZIP compression methods
Date Wed, 09 Jun 2010 22:42:15 GMT


Emmanuel Bourg commented on COMPRESS-93:

After looking quickly at the code it's straightforward to add support for bzip2 compression
to the ZipFile class. However it seems less trivial with ZipArchiveInput/OutputStream, these
classes are strongly tied to the deflate compression method. Ideally they should be refactored
to delegate the compression work to an external class (either a stream or a class similar
to Inflater/Deflater, I don't know which approach is better).

> Support for alternative ZIP compression methods
> -----------------------------------------------
>                 Key: COMPRESS-93
>                 URL:
>             Project: Commons Compress
>          Issue Type: New Feature
>            Reporter: Jukka Zitting
> As reported in TIKA-346, a ZIP file that uses a compression method other than STORED
(0) or DEFLATED (8) will cause an IllegalArgumentException ("invalid compression method")
to be thrown.
> It would be great if commons-compress supported alternative compression methods or at
least degraded more gracefully when encountering them.

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