update projects with version control

update.py

#!/usr/bin/env python

import os
import sys
from subprocess import Popen, PIPE


if len(sys.argv) > 1:
    path = os.path.abspath(sys.argv[1])
else:
    path = os.path.dirname(__file__)

dirs = []
for dir_ in os.listdir(path):
    dir_ = os.path.join(path, dir_)
    if os.path.isdir(dir_):
        dirs.append(dir_)

SCMS = {
    'git': 'git pull',
    'hg': 'hg pull -u',
    'svn': 'svn update',
}


def get_versioning(path):
    for scm in SCMS.keys():
        if os.path.exists(os.path.join(path, '.%s' % scm)):
            return scm
    return None

def has_upstream(path):
    cmd = Popen('git remote'.split(), cwd=path, stdout=PIPE)
    remotes, _ = cmd.communicate()
    if b'upstream' in remotes:
        return True
    return False

for dir_ in dirs:
    scm = get_versioning(dir_)
    dir_name = os.path.basename(dir_)
    if scm is not None:
        if scm == 'git' and has_upstream(dir_):
            cmd = 'git pull upstream master'
        else:
            cmd = SCMS[scm]
        print('Updating %s with %s' % (dir_name, scm))
        print(cmd)
        Popen(cmd.split(), cwd=dir_).communicate()
    else:
        print("No SCM in %s" % dir_name)
    print('')