Some raw log files may be empty if we cancelled tuhi at the wrong time. Skip
over those while testing
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This is a slightly different model as the messages, primarily because it's not
quite as model-specific. So there's only one parse function and it can handle
both file types that we currently support (intuos pro and the spark/slate
bits).
All wrapped into their own classes to make future extensions a bit easier.
It's not a 1:1 implementation of the tuhi/wacom.py bits either because we now
know about a few extra bits like the flags in stroke headers.
Most importantly though, this can be easily tested now, with one test case
searching for raw logs in $XDG_DATA_HOME/tuhi/raw and parsing all of those. So
the more files are sitting in there (i.e. the more the tablet is used), the
better the test suite becomes.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>