QGIS/python/ext-libs/dulwich/contrib/release_robot.py
2017-01-31 12:05:27 +01:00

130 lines
4.7 KiB
Python

# release_robot.py
#
# Dulwich is dual-licensed under the Apache License, Version 2.0 and the GNU
# General Public License as public by the Free Software Foundation; version 2.0
# or (at your option) any later version. You can redistribute it and/or
# modify it under the terms of either of these two licenses.
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# You should have received a copy of the licenses; if not, see
# <http://www.gnu.org/licenses/> for a copy of the GNU General Public License
# and <http://www.apache.org/licenses/LICENSE-2.0> for a copy of the Apache
# License, Version 2.0.
#
"""Determine last version string from tags.
Alternate to `Versioneer <https://pypi.python.org/pypi/versioneer/>`_ using
`Dulwich <https://pypi.python.org/pypi/dulwich>`_ to sort tags by time from
newest to oldest.
Import this module into the package ``__init__.py`` and then set ``__version__``
as follows::
from dulwich.contrib.release_robot import get_current_version
__version__ = get_current_version()
# other dunder classes like __author__, etc.
This example assumes the tags have a leading "v" like "v0.3", and that the
``.git`` folder is in the project folder that containts the package folder.
"""
from dulwich.repo import Repo
import time
import datetime
import os
import re
import sys
# CONSTANTS
DIRNAME = os.path.abspath(os.path.dirname(__file__))
PROJDIR = os.path.dirname(DIRNAME)
PATTERN = '[ a-zA-Z_\-]*([\d\.]+[\-\w\.]*)'
def get_recent_tags(projdir=PROJDIR):
"""Get list of tags in order from newest to oldest and their datetimes.
:param projdir: path to ``.git``
:returns: list of (tag, [datetime, commit, author]) sorted from new to old
"""
project = Repo(projdir) # dulwich repository object
refs = project.get_refs() # dictionary of refs and their SHA-1 values
tags = {} # empty dictionary to hold tags, commits and datetimes
# iterate over refs in repository
for key, value in refs.items():
obj = project.get_object(value) # dulwich object from SHA-1
# check if object is tag
if obj.type_name != 'tag':
# skip ref if not a tag
continue
# strip the leading text from "refs/tag/<tag name>" to get "tag name"
_, tag = key.rsplit('/', 1)
# check if tag object is commit, altho it should always be true
if obj.object[0].type_name == 'commit':
commit = project.get_object(obj.object[1]) # commit object
# get tag commit datetime, but dulwich returns seconds since
# beginning of epoch, so use Python time module to convert it to
# timetuple then convert to datetime
tags[tag] = [
datetime.datetime(*time.gmtime(commit.commit_time)[:6]),
commit.id,
commit.author
]
# return list of tags sorted by their datetimes from newest to oldest
return sorted(tags.items(), key=lambda tag: tag[1][0], reverse=True)
def get_current_version(pattern=PATTERN, projdir=PROJDIR, logger=None):
"""Return the most recent tag, using an options regular expression pattern.
The default pattern will strip any characters preceding the first semantic
version. *EG*: "Release-0.2.1-rc.1" will be come "0.2.1-rc.1". If no match
is found, then the most recent tag is return without modification.
:param pattern: regular expression pattern with group that matches version
:param projdir: path to ``.git``
:param logger: a Python logging instance to capture exception
:returns: tag matching first group in regular expression pattern
"""
tags = get_recent_tags(projdir)
try:
tag = tags[0][0]
except IndexError:
return
m = re.match(pattern, tag)
try:
current_version = m.group(1)
except (IndexError, AttributeError) as err:
if logger:
logger.exception(err)
return tag
return current_version
def test_tag_pattern():
test_cases = {
'0.3': '0.3', 'v0.3': '0.3', 'release0.3': '0.3', 'Release-0.3': '0.3',
'v0.3rc1': '0.3rc1', 'v0.3-rc1': '0.3-rc1', 'v0.3-rc.1': '0.3-rc.1',
'version 0.3': '0.3', 'version_0.3_rc_1': '0.3_rc_1', 'v1': '1',
'0.3rc1': '0.3rc1'
}
for tc, version in test_cases.iteritems():
m = re.match(PATTERN, tc)
assert m.group(1) == version
if __name__ == '__main__':
if len(sys.argv) > 1:
projdir = sys.argv[1]
else:
projdir = PROJDIR
print(get_current_version(projdir=projdir))