def handle_event(self, event):
self.event_buffer.append(event)
logging.debug("caught key, new buffer: %s",
[(Translator.key_to_name(key), key.keystate) for key in self.event_buffer])
# a bit dirty, yet so
if self.reset_expression(self.event_buffer)[0] is Expression.state_accept:
self.flush_buffer()
return
keep = False
result = Expression.state_reject
for expression, handler in self.expressions:
result, extracted = expression(self.event_buffer)
if result is Expression.state_accept:
logging.info("valid expression of '%s' is caught", expression)
try:
logging.info("handler '%s' is in charge, params: %s",
handler, extracted)
handler(extracted)
except Exception as e:
logging.error("error during handler execution: %s", e)
keep = False
break
elif result is Expression.state_partial:
keep = True
elif result is Expression.state_reject:
pass
else:
raise AttributeError("Unexpected expression reply")
logging.debug("reply: %s", ["accept", "reject", "partial"][result])
if not keep:
self.flush_buffer()
def listen_device(device):
sleep(1)
main = InputDevice("/dev/input/event0")
while True:
r,w,x = select([device, main], [], [])
events = {}
for dev in r:
events[dev] = [event for event in dev.read()
if event.type == ecodes.EV_KEY
and KeyEvent(event).keystate is KeyEvent.key_down]
if events.has_key(main):
break
for event in events[device]:
name = Translator.key_to_name(KeyEvent(event)).upper()
if name:
print name
