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List:       jakarta-commons-dev
Subject:    [GitHub] [commons-compress] bodewig commented on issue #87: COMPRESS-124 : Add support for extractin
From:       GitBox <git () apache ! org>
Date:       2019-11-30 19:47:56
Message-ID: 157514327633.8226.3159919542008093320.gitbox () gitbox ! apache ! org
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bodewig commented on issue #87: COMPRESS-124 : Add support for extracting sparse \
                entries from tar archives
URL: https://github.com/apache/commons-compress/pull/87#issuecomment-560015609
 
 
   First of all, many thanks @PeterAlfreadLee 
   
   I agree with @tcurdt that providing the functionality via a single \
`TarArchiveInputStream` would be preferable. Maybe we could extract the meet of the \
read and skip methods into strategy implementations and make the handling of sparse \
entries another strategy that is triggered when reading said type of entry? That way \
we could extend the class without making it even more complex itself.  
   Here I'm just thinking loud, I haven't got any code to show or even just tried to \
sketch it up. I must admit I haven't even looked at the code in detail, so maybe the \
idea is complete nonsense.  
   BTW, star is a pretty old tar implementation by Jörg Schilling that used to be \
pretty popular before POSIX started to add support for many of the shortcoming that \
GNU tar addressed in its own way - long file names, big files, non-ASCII file names \
and all that. It is still available via Sourceforge, I found the manual page at \
http://schilytools.sourceforge.net/man/man1/star.1.html . IIRC it is BSD licensed so \
was preferred over GNU tar by the BSDs and some other Unices.

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