[jira] [Created] (COMPRESS-292) Add support for virtual formats

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

Arno Unkrig created COMPRESS-292:
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             Summary: Add support for virtual formats
                 Key: COMPRESS-292
                 URL: https://issues.apache.org/jira/browse/COMPRESS-292
             Project: Commons Compress
          Issue Type: New Feature
          Components: Archivers, Compressors
    Affects Versions: 1.9
            Reporter: Arno Unkrig


Hello COMPRESS team!

Most applications know at compile-time which archive/compression format they want to use, but some don't. {{ArchiveStreamFactory}} and {{CompressorStreamFactory}} provide minimal support for runtime format processing, but more comprehensive handling would be greatly appreciated.

I propose the addition of the {{ArchiveFormat}} and {{CompressionFormat}} interfaces, together with their factories, to implement the following:

* Detection of archive/compression formats from contents, file name or format name
* Conversion of archive/compressed file names, e.g. "mydir" => "mydir.tar" => "mydir.tar.gz"
* Runtime extensibility through format auto-registration
* Writing archive entries without knowing he archive type at compile-time
* Automated conversion of archive entries when copying from one format to another

A sample design is available [here|https://svn.code.sf.net/p/loggifier/code/trunk/de.unkrig.commons.file/src/de/unkrig/commons/file/org/apache/commons/compress/]. If you like it, I would gladly donate it to the the project. The current license is "New BSD", which is (hopefully) compatible with yours.

Regards,
Arno Unkrig



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