version.py

#!/usr/bin/env python2
# vim: set ts=4 sw=4 expandtab sts=4 fileencoding=utf-8:

import os
import string
import subprocess
import warnings

MAJOR = 0
MINOR = 5
PATCH = 0

RELEASE = False

VERSION = "{0}.{1}.{2}".format(MAJOR, MINOR, PATCH)

if not RELEASE:
    try:
        try:
            pipe = subprocess.Popen(
                ["git", "describe", "--always", "--dirty", "--tags"],
                stdout=subprocess.PIPE)
        except EnvironmentError:
            warnings.warn("WARNING: git not installed or failed to run")

        revision = pipe.communicate()[0].strip().lstrip('v')
        if pipe.returncode != 0:
            warnings.warn("WARNING: couldn't get git revision")

        if revision != VERSION:
            revision = revision.lstrip(string.digits + '.')
            VERSION += '.dev' + revision
    except:
        VERSION += '.dev'
        warnings.warn("WARNING: git not installed or failed to run")


def write_version():
    """writes the khal/version.py file"""
    template = """\
__version__ = '{0}'
"""
    filename = os.path.join(
        os.path.dirname(__file__), 'khal', 'version.py')
    with open(filename, 'w') as versionfile:
        versionfile.write(template.format(VERSION))
        print("wrote khal/version.py with version={0}".format(VERSION))