And the internet has answers...according to 
http://fileformats.archiveteam.org/wiki/IWA

"However, the variant of Snappy that is used does not comply with the spec for 
that format, omitting the stream identifier and checksum."

I've opened:
https://issues.apache.org/jira/browse/COMPRESS-352


-----Original Message-----
From: Allison, Timothy B. [mailto:talli...@mitre.org] 
Sent: Wednesday, May 4, 2016 8:46 AM
To: Commons Users List <user@commons.apache.org>
Subject: [COMPRESS] .iwa files within latest iOS iWorks files?

All,
  Over on Tika, we recently had a user post some new Apple iWorks files.  These 
are zips that now contain mostly .iwa files.  I found one mention on the 
internet that these might be snappy compressed, but I'm not having luck opening 
them.  I get only -1 with SNAPPY_RAW, and I get an exception with SNAPPY_FRAMED.
  The files are posted on our jira [0].
  Any recommendations?  Thank you.

      Best,

           Tim

[0] https://issues.apache.org/jira/browse/TIKA-1966

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