Hi,
On Thu, Sep 30, 2010 at 9:43 PM, Nick Burch <[email protected]> wrote:
> On Thu, 30 Sep 2010, Jan Høydahl / Cominvent wrote:
>> We could implement the decoder without distributing tnef.jar, using
>> Class.forName() and simply disabling the decoder if the jar is not on
>> classpath? Then it is up to the user to download the jar and thereby accept
>> the GPL license.
>
> I've got a feeling that that may still be too closely linked to be allowed,
> but hopefully someone else can point us to the answer.
You're right. The copyleft effects would start to creep in as soon as
we write Class.forName("net.freeutils.tnef....").
> There's nothing stopping you writing a GPL licensed parser with a hard
> dependency, and including it yourself though.
Creating an example of how to do this has long been on my TODO list,
and since jtnef is such a simple library I decided to use it for the
example. See [1] for my fork of the latest jtnef sources, and [2] for
the commit where I added Tika support to it. Thanks to TIKA-317 [3],
you can add the resulting jtnef jar to your classpath, and Tika will
automatically pick it up for parsing any application/x-tnef documents.
[1] http://github.com/jukka/jtnef
[2]
http://github.com/jukka/jtnef/commit/a9a51982165101c0bdda4cb5266d7f8958c271ef
[3] https://issues.apache.org/jira/browse/TIKA-317
BR,
Jukka Zitting
