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# -*- coding: utf-8 -*-
import datetime
import os
import subprocess
VERSION = (0, 1, 0, 'beta', 1)
def get_version():
"Returns a PEP 386-compliant version number from VERSION."
# Taken from django.utils.version
assert VERSION[3] in ('alpha', 'beta', 'rc', 'final')
# Now build the two parts of the version number:
# main = X.Y[.Z]
# sub = .devN - for pre-alpha releases
# | {a|b|c}N - for alpha, beta and rc releases
parts = 2 if VERSION[2] == 0 else 3
main = '.'.join(str(x) for x in VERSION[:parts])
sub = ''
if VERSION[3] == 'alpha' and VERSION[4] == 0:
git_changeset = get_git_changeset()
if git_changeset:
sub = '.dev%s' % git_changeset
elif VERSION[3] != 'final':
mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c'}
sub = mapping[VERSION[3]] + str(VERSION[4])
return str(main + sub)
def get_git_changeset():
"""Returns a numeric identifier of the latest git changeset.
The result is the UTC timestamp of the changeset in YYYYMMDDHHMMSS format.
This value isn't guaranteed to be unique, but collisions are very unlikely,
so it's sufficient for generating the development version numbers.
"""
repo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
git_log = subprocess.Popen('git log --pretty=format:%ct --quiet -1 HEAD',
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
shell=True, cwd=repo_dir, universal_newlines=True)
timestamp = git_log.communicate()[0]
try:
timestamp = datetime.datetime.utcfromtimestamp(int(timestamp))
except ValueError:
return None
return timestamp.strftime('%Y%m%d%H%M%S')
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