#!/usr/bin/env python
'''Script to clean no existing users from Perforce groups'''

__author__ = "Miki Tebeka <miki.tebeka@zoran.com>"
# $Id$

from os import popen

# List of all users
users = {}

# Collect all users
for line in popen("p4 users"):
    users[line.split()[0]] = 1

# Fix groups
while 1:
for group in popen("p4 groups"):
    group = group.strip()
    # Read group description
    lines = popen("p4 group -o %s" % group)
    # Open update pipe
    pipe = popen("p4 group -i", "w")
    in_users = 0 # Are we in users section
    for line in lines:
        write = 1 # "write this line" flag
        if line.startswith("Users:"):
            in_users = 1
        elif not in_users: # Write all line not in users
            pass
        elif not line.strip(): # Ignore empty lines
            pass
        else: # In users, check user
            user = line.strip()
            if user not in users:
                print "removing %s from %s" % (user, group)
                write = 0
            else:
                write = 1
        # Write line to group description
        if write:
            pipe.write(line)