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https://issues.apache.org/jira/browse/TIKA-1817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15067943#comment-15067943
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Nick Burch commented on TIKA-1817:
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There might be license issues with just taking random files off the web, unless 
they are clearly marked as samples / have a suitable licenses stated for them. 
We'll need to include one or two files in the Tika test suite, so they need to 
be under an Apache policy compatible license/terms

Don't suppose you could hunt for one that's suitably licensed for us to use for 
unit testing with?

> Extracts entire file content for ASCII DXF files
> ------------------------------------------------
>
>                 Key: TIKA-1817
>                 URL: https://issues.apache.org/jira/browse/TIKA-1817
>             Project: Tika
>          Issue Type: Bug
>    Affects Versions: 1.11
>            Reporter: Zoltan Toth
>         Attachments: jcsample-screendump.jpg, jcsample.dxf
>
>
> By definition, ASCII DXF files are encoded in plain text.  However. the vast 
> majority of their content is not intended to be human readable (see 
> https://en.wikipedia.org/wiki/AutoCAD_DXF).  Unfortunately for these files, 
> Tika simply "extracts" the entire content of the file instead of the 
> human-readable portions (i.e. comments etc.) that a CAD tool would render.  
> This results in massive amounts of rubbish data being returned with dire 
> consequences for applications that rely on this.
> It would be nice if only the human-readable text fields were extracted.  
> Failing this, it would still be nice if no text was extracted from these 
> files at all.  



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