— Created 2006-10-17 by Somebody
— Modified 2015-10-06 by Takaaki Naganoya

set aFile to choose file of type {"public.jpeg"}
set dRes to VerifyCompleteJPEG(aFile) of me

— to verify whether a JPEG is a111 full or partial (e.g. partially downloaded) JPEG
— last two JPEG file bytes must be (ASCII character 255) & (ASCII character 217)
on VerifyCompleteJPEG(f)
    set s to read f from -2 for 2
  on error
    return false –error "JPEG image is too short or currupted"
  end try
if s = (ASCII character 255) & (ASCII character 217) then
    return true
    return false
  end if
end VerifyCompleteJPEG

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