text: #!/usr/bin/python
  # coding: utf-8
  
  # Copyright (c) 2013 Mountainstorm
  # 
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  # 
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  # 
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  
  from MobileDevice import *
  from amdevice import *
  from plistservice import *
  import os
  
  
  class Syslog(object):
  	u'''Syslog relay class; starts the syslog service and reads all entries'''
  
  	def __init__(self, amdevice):
  		self.s = amdevice.start_service(AMSVC_SYSLOG_RELAY)
  		if self.s is None:
  			raise RuntimeError(u'Unable to launch:', AMSVC_SYSLOG_RELAY)
  
  	def disconnect(self):
  		os.close(self.s)
  
  	def read(self, length=1024):
  		u'''reads at most length bytes from the syslog; blocking if no more data
  		is avaliable
  
  		Arguments:
  		length -- the max bytes to read (default 1024)
  		'''
  		return os.read(self.s, length)
  
  
  def register_argparse_syslog(cmdargs):
  	import argparse
  	import sys
  
  	def cmd_syslog(args, dev):
  		sl = Syslog(dev)
  		while True:
  			msg = sl.read()
  			if msg is None:
  				break
  			sys.stdout.write(msg)
  		sl.disconnect()
  
  	# syslog command
  	syslogcmd = cmdargs.add_parser(
  		u'syslog', 
  		help=u'displays syslog info from the device'
  	)
  	syslogcmd.set_defaults(func=cmd_syslog)
  