#!/usr/bin/env python
#
# Copyright (c) 2000 Dominic Mitchell.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# 

"""Sort a file with ip addresses in a column."""
__rcsid__ = "@(#) $Id: sortips.py,v 1.1 2001/07/26 22:52:32 dom Exp $"
__version__ = "$Revision: 1.1 $"[11:-2]

import os,sys
import string
import getopt
import fileinput

def usage():
    me = os.path.basename(sys.argv[0])
    sys.stderr.write("usage: %s [-c col] [file ...]")
    sys.exit(1)

def main(files, col=0):
    """Sort by ip address in column col, to stdout."""
    lines = {}
    for line in fileinput.input(args):
        line = string.rstrip(line)
        try:
            ip = string.split(line)[col]
            ip = string.split(ip, '.')
            ip = map(int, ip)               # Convert string -> int.
            # Must make it a long here...
            num = ip[0] *256*256*256L + ip[1]*256*256L + ip[2]*256L + ip[3]
        except ValueError:
            num = 0
        if not lines.has_key(num):
            lines[num] = []
        lines[num].append(line)
    nums = lines.keys()
    nums.sort()
    for n in nums:
        for l in lines[n]:
            print l
    return

if __name__ == '__main__':
    col=0
    try:
        opts,args = getopt.getopt(sys.argv[1:], 'c:')
    except getopt.error:
        usage
    for o, a in opts:
        if o == '-c': col=int(a)
    main(args, col)

# vim: set ai et sw=4 :