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version.py
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Thu, Jun 20, 21:21

version.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2014, 2015 CERN.
#
# Invenio is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# Invenio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Invenio; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""Version information for Invenio.
This file is imported by ``invenio.__init__``, and parsed by ``setup.py``.
"""
# Respect the following format: major, minor, patch, ..., "dev"?, revision?
#
# - major, minor, patch are numbers starting at zero.
# - you can put as much sub version as you need before 'dev'
# - dev has to be set in development mode (non-release).
# - revision can be set if you want to override the date coming from git.
#
# See the doctest below.
version = (2, 2, 0, 'dev', 20150901)
def build_version(*args):
"""Build a PEP440 compatible version based on a list of arguments.
Inspired by Django's django.utils.version
.. doctest::
>>> print(build_version(1, 0, 0))
1.0.0
>>> print(build_version(1, 1, 1))
1.1.1
>>> print(build_version(1, 2, 3, 4))
1.2.3.4
>>> print(build_version(2, 0, 0, 'dev', 1))
2.0.0.dev1
>>> print(build_version(2, 0, 0, 'dev')) # doctest: +ELLIPSIS
2.0.0.dev...
>>> print(build_version(2, 0, 1, 'dev')) # doctest: +ELLIPSIS
2.0.1.dev...
>>> print(build_version(1, 2, 3, 4, 5, 6, 'dev')) # doctest: +ELLIPSIS
1.2.3.4.5.6.dev...
"""
if 'dev' in args:
pos = args.index('dev')
else:
pos = len(args)
def zero_search(acc, x):
"""Increment the counter until it stops seeing zeros."""
position, searching = acc
if searching:
if x != 0:
searching = False
else:
position += 1
return (position, searching)
last_zero = pos + 1 - reduce(zero_search, reversed(args[:pos]), (1, True))[0]
parts = max(3, last_zero)
version = '.'.join(str(arg) for arg in args[:parts])
if len(args) > pos:
revision = args[pos + 1] if len(args) > pos + 1 else git_revision()
version += '.dev{0}'.format(revision)
return version
def git_revision():
"""Get the timestamp of the latest git revision."""
if not hasattr(git_revision, '_cache'):
import datetime
import subprocess
call = subprocess.Popen(r'git log -1 --pretty=format:%ct --quiet HEAD',
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, shell=True)
stdout, _ = call.communicate()
try:
timestamp = int(stdout.decode())
ts = datetime.datetime.utcfromtimestamp(timestamp)
revision = ts.strftime('%Y%m%d%H%M%S')
except ValueError:
revision = '0'
git_revision._cache = revision
return git_revision._cache
__version__ = build_version(*version)

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