git_sync

#!/usr/bin/env python
import os
import sys
try:
    from colorama import Fore, Back, Style
except:
    class Fore:
        BLUE = ""
        RED = ""
        RESET = ""

def system(cmd):
    print(Fore.BLUE + cmd + Fore.RESET)
    ret = os.system(cmd)
    if ((ret >> 8) & 0xff):
        print(Fore.RED + "Command {0} failed".format(cmd) + Fore.RESET)
        sys.exit(1)

system("git pull --ff-only")

#currently have two levels deep of submodules, if you add more, add another line below
system("git submodule update --init --recursive")
system("git submodule update --init --recursive")
system("git submodule status --recursive")

def sync_submodules():
    modules = open('.gitmodules')
    lines = modules.readlines()
    modules.close()

    i = 0
    while i < len(lines):
        if "[submodule " in lines[i]:
            path = lines[i+1].split("=")[1].strip() 
            url = lines[i+2].split("=")[1].strip()
            branch = "master"
            i += 2
            if i < len(lines)-1:
                if "branch = " in lines[i+1]:
                    i += 1
                    branch = lines[i].split("=")[1].strip()
            print(Fore.BLUE + "Syncing {0} to {1}".format(path, branch) + Fore.RESET)
            current_path = os.getcwd()
            os.chdir(path)
            system("git fetch")
            system("git checkout {0}".format(branch))
            system("git merge origin/{0} --ff-only".format(branch))
            if os.path.exists(".gitmodules"):
                sync_submodules()
            os.chdir(current_path)
        i += 1
sync_submodules()