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#!/usr/bin/env python
# Script to parse a serial port data dump
#
# Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import os, sys, logging
import msgproto
def read_dictionary(filename):
dfile = open(filename, "rb")
dictionary = dfile.read()
dfile.close()
return dictionary
def main():
dict_filename, data_filename = sys.argv[1:]
dictionary = read_dictionary(dict_filename)
mp = msgproto.MessageParser()
mp.process_identify(dictionary, decompress=False)
f = open(data_filename, "rb")
fd = f.fileno()
data = bytearray()
while 1:
newdata = os.read(fd, 4096)
if not newdata:
break
data += bytearray(newdata)
while 1:
l = mp.check_packet(data)
if l == 0:
break
if l < 0:
logging.error("Invalid data")
data = data[-l:]
continue
msgs = mp.dump(data[:l])
sys.stdout.write("\n".join(msgs[1:]) + "\n")
data = data[l:]
if __name__ == "__main__":
main()
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