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Old 05-11-2011, 12:57 AM
Sylvain Beucler
 
Default Bug#619602: RFP: theunarchiver -- archive extractor with built-in support for multiple formats

Package: wnpp
Severity: wishlist


* Package name : theunarchiver
Version : 2.6
Upstream Author : Dag Ågren <paracelsus@gmail.com>
* URL : http://wakaba.c3.cx/s/apps/unarchiver.html
* License : LGPL
Programming Lang: Objective C
Description : archive extractor with built-in support for multiple formats

The Unarchiver extracts archives in Zip, Tar-GZip, Tar-BZip2, RAR,
7-zip, LhA, StuffIt and many other old and obscure formats.

In particular it supports extracting RAR v3 archive using a completely
free, LGPL'd implementation (while other archive managers usually rely
on the non-free library from the RAR authors).

It provides two commands:
* lsar to list an archive content
* unar to extract the archive


The webpage provide this set of instructions to build the package,
which works for me under Debian Squeeze:

sudo apt-get install build-essential libgnustep-base-dev libz-dev libbz2-dev libssl-dev libicu-dev
cd XADMaster
make -f Makefile.linux

I didn't try to build the GUI portion, which is aimed at OS X.


The package contains an unused copy of the proprietary unrar library
(in the BadLicense/ directory), which should be removed before
packaging. The free code is in XADMaster/XADRAR* .

--
Sylvain





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Old 05-11-2011, 09:00 AM
Adam Borowski
 
Default Bug#619602: RFP: theunarchiver -- archive extractor with built-in support for multiple formats

On Wed, May 11, 2011 at 08:57:56AM +0800, Sylvain Beucler wrote:
> * Package name : theunarchiver
> * URL : http://wakaba.c3.cx/s/apps/unarchiver.html

> The Unarchiver extracts archives in Zip, Tar-GZip, Tar-BZip2, RAR,
> 7-zip, LhA, StuffIt and many other old and obscure formats.
>
> In particular it supports extracting RAR v3 archive using a completely
> free, LGPL'd implementation (while other archive managers usually rely
> on the non-free library from the RAR authors).

Now that's interesting. Do you mean, someone reverse engineered the format
or did work around the restrictions of unrar-nonfree's license? That
license specifically forbids reading the source to recreate the format.
This restriction doesn't sound like something very solid, but whatever way
it was avoided needs close scrutiny.

If it's kosher, it would be great to make the free implementation available
as a library.

--
1KB // Microsoft corollary to Hanlon's razor:
// Never attribute to stupidity what can be
// adequately explained by malice.


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