#!/usr/bin/env python3
# vim: ft=python
# -*- mode: python -*-

import subprocess
import sys
import os

def is_arg_set(name):
    for arg in sys.argv:
        if arg == '--{}'.format(name):
            return True

    return False


def get_arg(name):
    ret_next = False
    for arg in sys.argv:
        if ret_next:
            return arg

        if arg == '--{}'.format(name):
            ret_next = True

    return ''


source_dir = get_arg('source-dir')
current_tag = subprocess.check_output(['git', 'describe', '--tags', '--abbrev=0'], cwd=source_dir).decode('utf-8').strip()

build_id = '{}'.format(current_tag)

if sys.stdout.isatty():
    print('{}'.format(build_id))
else:
    print('{}'.format(build_id), end='')