[sane-devel] sane_read() and SANE_STATUS_EOF

[Kåre Särs]

Hi,

I have  a bug report for Skanlite where I suspect that the backend returns 
SANE_STATUS_EOF in sane_read() but still has data, because the read data does 
not match the expected size. The scanner is a Samsung CLX-3175FW and I do not 
have access to the scanner. If I have googled correctly, it is also a binary 
only backend :(

The standard clearly states that "*len" has to be set to 0 if anything else 
than SANE_STATUS_GOOD is returned from sane_read() (4.3.10).

I wonder what other frontend developers, would do in this situation. Would you 
just ask the user to file a bug report to the backend provider or would you do 
a workaround?

I can check "*len" and see if it matches the remaining data, but where would 
you draw the line for other similar non-conforming backend problems? 

Regards,
  Kåre