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From "Hannes Kogler (JIRA)" <>
Subject [jira] (MASSEMBLY-748) problem to extract zip files including file names with umlauts
Date Fri, 23 Jan 2015 11:12:18 GMT


Hannes Kogler commented on MASSEMBLY-748:

Exactly this is what I am complaining. If you configure "archiverConfig" for the same plugin
execution you use on extraction of a zip file you just get a plugin Exception (justl ike described
in the main description of the issue you get the error: *org.codehaus.plexus.archiver.dir.DirectoryArchiver:
Cannot find 'encoding' in class org.codehaus.plexus.archiver.dir.DirectoryArchiver* )

If I am able to produce a zip file using the <achiverConfig> with a special encoding
like CP850, then I assume I can also extract it (however this works, I don't know the ZIP
format specification or implementation exactly) using the same encoding to provide a consistent
way of getting the files as they are correctly displayed/zipped in the compressed file. (without
losing any char informations). So the maven-assembly-plugin needs to support any way to decompress
zip files with alternative encodings of the source file's zipEntries to be consistent.

And yes, those contraints would be ok. Because since umlauts are a typical german language
part, I can assume that the target OS system, where those files will be viewed and handled
will be CP850 compatible. If I get some zip files with russian chars in the file names of
zipEntries I cannot expect that on my german OS system they will be displayed in a correct
way, if I don't specify an alternative encoding to handle such files.

> problem to extract zip files including file names with umlauts
> --------------------------------------------------------------
>                 Key: MASSEMBLY-748
>                 URL:
>             Project: Maven Assembly Plugin
>          Issue Type: Bug
>          Components: maven-archiver
>    Affects Versions: 2.5.3
>         Environment: 
>            Reporter: Hannes Kogler
>            Assignee: Kristian Rosenvold
>             Fix For: 2.5.4
>         Attachments: encoding_problem_on_zip_extract.7z
> Like in an other issue reported, you need to explicitly set the code page CP850 to create
zip packages hosting file names with correct umlauts their names. (by using the following
> <archiverConfig>
>   <encoding>CP850</encoding>
> </archiverConfig>
> After all this solution is not 100% useful, because if you extract this file with the
obiously correct umlauts in the zip, wrong chars for all umlauts reappear.
> It's strange, because if you unzip this zip file with all other zip tools (7zip, Windows
native zip support aso.) the extraction works fine.
> Only using the maven-assembly-plugin the umlauts get corrupted.
> (a try to set the archiverConfig with the CP850 also for the extracting execution process
of the assembly plugin just results in a bad error calling
> Failed to configure archiver:
>  " org.codehaus.plexus.archiver.dir.DirectoryArchiver: Cannot find 'encoding' in class
org.codehaus.plexus.archiver.dir.DirectoryArchiver " )

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