def do_filtering(options, args, id_dict):
"""
Parameters
----------
options : ArgumentParser.parse_args() output
Contains options from commandline input
args : list of raw strings
Contains arguments from commandline input
id_dict : dictionary
"""
# Parse input and do filtering.
# myfiltered is a list of packets; each pack is a list of integers.
if options.quick:
quickstream = StringIO(' '.join(args[0:]))
myfiltered = filtering_method(quickstream, f_id=options.my_f_id, \
f_instr=options.my_f_instr, f_cmd=options.my_f_cmd, \
sync_split=options.sync_split)
else:
with open(args[0], 'r') as fr:
myfiltered = filtering_method(fr, f_id=options.my_f_id, \
f_instr=options.my_f_instr, f_cmd=options.my_f_cmd, \
sync_split=options.sync_split)
# Optionally write filtered results to a new file
if options.output != '':
if options.quick:
print translate_packet(myfiltered[0], id_dict, includetime=options.timestamp)
elif len(myfiltered):
with open(options.output, 'w') as fw:
# either translated output
if options.translate:
for packet in myfiltered:
packet = translate_packet(packet, id_dict, \
includetime=options.timestamp)
fw.write("\t".join(packet) + "\n")
# or raw integer output; float timestamp included if exists
else:
for packet in myfiltered:
fw.write(" ".join([str(x) for x in packet]) + "\n")
print "Filtered results written to {0}\n".format(options.output)
else:
print "No packets satisfied the filters specified."
# Optionally tally packets and report
if options.my_tally_by != None:
tally_packets(myfiltered, tally_by=options.my_tally_by)
return
def _handle_packet(byte_packet, byte_list, startTime):
"""Method handles completed packets
Parameters
----------
byte_packet : `BytePacket` instance
A BytePacket object allowing external thread access to the current
packet
byte_list : list of ints
New byte packet to be stored in byte_packet if valid
startTime : float
Result of initial time.time() call
"""
checksumOK = byte_list[-3] == \
255 - (sum(byte_list[:-3]) % 256)
# Save packet
# Note: saved packets have FF FF prepended to them
if saveall:
byte_packet.word = [0xff, 0xff] + byte_list[:-2]
elif checksumOK:
byte_packet.word = [0xff, 0xff] + byte_list[:-2]
else:
# continue
return list()
if translate:
# logging.debug("\t".join(translate_packet(byte_packet.word)))
print "\t".join(translate_packet(byte_packet.word, id_dict))
else:
logging.debug(("packet: " + \
" ".join(["{0:<3}".format(x) \
for x in byte_packet.word]) + \
" packet ok?: " + str(checksumOK )))
# Get packet time
if timing:
byte_packet.timestamp = gettime() - startTime
return list()
def _handle_packet(byte_packet, byte_list, startTime):
"""Method handles completed packets
Parameters
----------
byte_packet : `BytePacket` instance
A BytePacket object allowing external thread access to the current
packet
byte_list : list of ints
New byte packet to be stored in byte_packet if valid
startTime : float
Result of initial time.time() call
"""
checksumOK = byte_list[-3] == \
255 - (sum(byte_list[:-3]) % 256)
# Save packet
# Note: saved packets have FF FF prepended to them
if saveall:
byte_packet.word = [0xff,0xff] + byte_list[:-2]
elif checksumOK:
byte_packet.word = [0xff,0xff] + byte_list[:-2]
else:
# continue
return list()
if translate:
# logging.debug("\t".join(translate_packet(byte_packet.word)))
print "\t".join(translate_packet(byte_packet.word, id_dict))
else:
logging.debug(("packet: " + \
" ".join(["{0:<3}".format(x) \
for x in byte_packet.word]) + \
" packet ok?: " + str(checksumOK )))
# Get packet time
if timing:
byte_packet.timestamp = gettime() - startTime
return list()
