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#!/usr/bin/python
"""
Generate a dict of packet lenghts, based on packetsin.inc from ManaPlus.
Author: Joseph Botosh <rumly111@gmail.com>
Licence: GPLv2.
"""
import os
import sys
def GeneratePacketLengths(infile):
plength = {}
with open(infile) as f:
for l in f:
if l.startswith('packet('):
w = l[7:-2].split(',')
opcode = int(w[1].strip(), 16)
length = int(w[2].strip())
plength[opcode] = length
return plength
def PrettyPrint(plengths, width=80):
s = 'packet_lengths = {\n '
curr_line_len = 4
for opcode in sorted(plengths.keys()):
r = '0x{:04x}: {:d},'.format(opcode, plengths[opcode]).ljust(12)
if curr_line_len + len(r) > width:
curr_line_len = 4
s += '\n '
s += r
curr_line_len += len(r)
s += '}\n'
return s
def PrintHelp():
print('Usage: {} /path/to/packetsin.inc'.format(sys.argv[0]))
if __name__ == '__main__':
if len(sys.argv) == 1:
PrintHelp()
sys.exit(0)
filename = sys.argv[1]
if os.path.isfile(filename):
pl = GeneratePacketLengths(filename)
print(PrettyPrint(pl))
# print('packet_lengths = ',
# GeneratePacketLengths(filename))
else:
print('File not found:', filename, file=sys.stderr)
sys.exit(1)
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