#!/usr/bin/env python

# git-branch-check: Compare your local git branches with the remote.
#
# Usage: git-branch-check [remote]
#
# Default remote name is "origin", provide [remote] to change that.
#
# --Kirsle
# https://www.kirsle.net/

from __future__ import print_function

import sys
import subprocess

remote = "origin"
if len(sys.argv) >= 2:
    remote = sys.argv[1]

local_branch  = set()
remote_branch = set()

subprocess.call(["git", "remote", "update", remote, "--prune"])

data = subprocess.check_output(["git", "branch", "-a"]).decode()
for line in data.split("\n"):
    # Remove the currently active branch indicator and extra spaces.
    line = line.strip("*").strip()
    if not len(line): continue

    # Remote branch?
    if line.startswith("remotes/{}/".format(remote)):
        line = line.replace("remotes/{}/".format(remote), "")
        remote_branch.add(line)
    elif line.startswith("remotes/"):
        # A different remote?
        pass
    else:
        local_branch.add(line)

# Show comparisons.
print("Local branches that are not on the remote:")
for branch in sorted(local_branch):
    if not branch in remote_branch:
        print("*", branch)

# vim:expandtab