class IrReader:
def __init__(self, socketReader = None):
self.log = logging.getLogger('IrReader')
self.socketReader = socketReader
if not self.socketReader:
self.socketReader = SocketReader('/var/run/lirc/lircd')
self.streamBuffer = ''
def getNextCode(self):
while True:
self._connectLirc()
self._readFromLirc()
message = self._getNextMessage()
if not message:
continue
code = self._getKeyNameFromMessage(message)
if not code:
continue
return code
def _getKeyNameFromMessage(self, message):
if not message:
return None
# from http://lirc.org/html/technical.html#applications
# format of an lircd message is: <code> <repeat count> <button name> <remote control name>
(code, repeatCount, buttonName, remoteName) = message.split()
if int(repeatCount, 16) > 0:
return None
return buttonName
def _connectLirc(self):
self.socketReader.connect()
if not self.socketReader.isConnected():
raise IrReaderError()
def _readFromLirc(self):
incoming = self.socketReader.read()
if incoming is None:
raise IrReaderError()
self.streamBuffer += incoming
def _getNextMessage(self):
newlinePosition = self.streamBuffer.find('\n')
if newlinePosition == -1:
return None
message = self.streamBuffer[:newlinePosition]
self.streamBuffer = self.streamBuffer[newlinePosition + 1:]
self.log.debug('Read message from lircd: %s', message.strip())
return message
def __init__(self, socketReader = None):
self.log = logging.getLogger('IrReader')
self.socketReader = socketReader
if not self.socketReader:
self.socketReader = SocketReader('/var/run/lirc/lircd')
self.streamBuffer = ''
