gistfile1.py

#! /usr/bin/env python
# -*- coding: utf-8 -*-
"""
http://stackoverflow.com/questions/19960243/how-to-store-ip-address-range-vs-location
by Bystroushaak bystrousak@kitakitsune.org
"""
#
# Interpreter version: python 2.7
# This work is licensed under a Creative Commons 3.0 Unported License
# (http://creativecommons.org/licenses/by/3.0/).
#
in_file = """10.1.100.200- 10.1.100.800              x
10.1.101.200- 10.1.101.800              Y
10.1.102.200- 10.1.102.800              Z"""


def ipToIntArray(s):
	"""Convert string with IP address into array of numbers"""

	return map(lambda x: int(x), s.split("."))


def parseString(s):
	"""
	Parse string in user-defined format into dictionary:

	---
	10.1.100.200- 10.1.100.800              x
	---

	will be parsed into:

	{
		"f_range": [10.1.100.200]
		"t_range": [10.1.100.800]
		"name":    "x"
	}

	Return array of dicts.
	"""
	data = []
	for line in s.splitlines():
		# skip blank lines
		if line.strip() == "":
			continue

		ranges = line.split("-")
		f_range = ranges[0].strip()
		# parse "10.1.102.800              Z" -> t_range, name
		t_range, name = map(lambda x: x.strip(), ranges[1].strip().split())

		data.append({
			"f_range": ipToIntArray(f_range),
			"t_range": ipToIntArray(t_range),
			"name":    name
		})

	return data


def fitsIntoRange(ip, range_dict):
	"""
	Return True if 'ip' fits into given "range_dict".

	ip -- string or value returned from ipToIntArray()
	range_dict -- one parsed line from parseString()
	"""
	if isinstance(ip, str):
		ip = ipToIntArray(ip)

	bigger  = all(map(lambda x: x[0] >= x[1], zip(ip, range_dict["f_range"])))
	smaller = all(map(lambda x: x[0] <= x[1], zip(ip, range_dict["t_range"])))

	return (bigger and smaller)


def findFittingNames(ip, s):
	"""
	Return array of names in which 'ip' belongs.
	"""
	if isinstance(s, str):
		data = parseString(s)

	return map(lambda x: x["name"], filter(lambda x: fitsIntoRange(ip, x), data))



if __name__ == '__main__':
	# example
	print findFittingNames("10.1.100.202", in_file)