jay

jay.py

#!/usr/bin/env python

def is_bigger(a, b):
    aa = a.split('.')
    bb = b.split('.')
    for x,y in zip(aa, bb):
        if int(x) > int(y):
            return True
    return False

def update_list(current, updated):
    result = []
    # update current entries
    for x in current:
        start = x['start']
        end = x['end']
        for y in updated:
            if start == y['start']:
                if is_bigger(y['end'], end):
                    end = y['end']
        result.append({'start': start, 'end': end})

    # add new entires which are not present in 'current'
    for y in updated:
        found = False
        for x in current:
            if x['start'] == y['start']:
                found = True
                break
        if not found:
            result.append(y)

    return result

if __name__ == '__main__':
    print is_bigger('1.1.1.6', '1.1.1.5')
    print is_bigger('1.1.1.3', '1.1.1.5')
    print is_bigger('1.1.1.30', '1.1.1.5')
    print update_list([{'start': '1.1.1.2', 'end': '1.1.1.100'}], 
                      [{'start': '1.1.1.2', 'end': '1.1.1.254'},
                       {'start': '1.2.1.2', 'end': '1.2.1.254'}])