La Vita è Bella

Columbus V-900 is so far the GPS that best fit my requirements: it can log, it can take waypoints while logging, and it (can) have a big storage for logging (via TF card). I got one from WC, a friend to give it a try.

It log GPS tracks to CSV format, WC wrote a script to convert it to the GPX format, but without waypoints. So I rewrote a Python script (as I'm not so familiar with perl), to add the waypoints to the GPX file.

Get the script here, it will use the voice record filename as the name of the waypoint if available, or otherwise just "Waypoint #N". You may want to edit the converted GPX file to rename the waypoints.

This script will convert a line contains start and end IP separated by space like:

221.192.0.0 221.199.207.255

Into IP mask format (with comment) like:

#221.192.0.0 - 221.199.207.255
221.192.0.0/14
221.196.0.0/15
221.198.0.0/16
221.199.0.0/17
221.199.128.0/18
221.199.192.0/20

The script is:

 1 #!/usr/bin/env python
 2
 3 import sys
 4 import re
 5
 6 def ip2int(ip) :
 7         ret = 0
 8         match = re.match("(\d*)\.(\d*)\.(\d*)\.(\d*)", ip)
 9         if not match : return 0
10         for i in xrange(4) : ret = (ret << 8) + int(match.groups()[i])
11         return ret
12
13 def int2ip(ipnum) :
14         ip1 = ipnum >> 24
15         ip2 = ipnum >> 16 & 0xFF
16         ip3 = ipnum >> 8 & 0xFF
17         ip4 = ipnum & 0xFF
18         return "%d.%d.%d.%d" % (ip1, ip2, ip3, ip4)
19
20 def printrange(startip, endip) :
21         bits = 1
22         mask = 1
23         while bits < 32 :
24                 newip = startip | mask
25                 if (newip>endip) or (((startip>>bits) << bits) != startip) :
26                         bits = bits - 1
27                         mask = mask >> 1
28                         break
29                 bits = bits + 1
30                 mask = (mask<<1) + 1
31         newip = startip | mask
32         bits = 32 - bits
33         print "%s/%d" % (int2ip(startip), bits)
34         if newip < endip :
35                 printrange(newip + 1, endip)
36
37 while 1 :
38         line = sys.stdin.readline().strip()
39         if not line : break
40         chars = line.split(" ")
41         print "#%s - %s" % (chars[0], chars[1])
42         ip1 = ip2int(chars[0])
43         ip2 = ip2int(chars[1])
44         printrange(ip1, ip2)
45