/
get_tagged_package.py
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/
get_tagged_package.py
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# Copyright 2016 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# 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.
"""Helper to determine package from tag.
Get the current package directory corresponding to the Circle Tag.
"""
from __future__ import print_function
import os
import re
import sys
TAG_RE = re.compile(r"""
^
(?P<pkg>
(([a-z]+)[_-])*) # pkg-name-with-hyphens-or-underscores (empty allowed)
([0-9]+)\.([0-9]+)\.([0-9]+) # Version x.y.z (x, y, z all ints)
$
""", re.VERBOSE)
TAG_ENV = 'CIRCLE_TAG'
ERROR_MSG = '%s env. var. not set' % (TAG_ENV,)
BAD_TAG_MSG = 'Invalid tag name: %s. Expected pkg-name-x.y.z'
CIRCLE_CI_SCRIPTS_DIR = os.path.dirname(__file__)
ROOT_DIR = os.path.realpath(
os.path.join(CIRCLE_CI_SCRIPTS_DIR, '..', '..', '..'))
def main():
"""Get the current package directory.
Prints the package directory out so callers can consume it.
"""
if TAG_ENV not in os.environ:
print(ERROR_MSG, file=sys.stderr)
sys.exit(1)
tag_name = os.environ[TAG_ENV]
match = TAG_RE.match(tag_name)
if match is None:
print(BAD_TAG_MSG % (tag_name,), file=sys.stderr)
sys.exit(1)
pkg_name = match.group('pkg')
if pkg_name is None:
print(ROOT_DIR)
else:
pkg_dir = pkg_name.rstrip('-').replace('-', '_')
print(os.path.join(ROOT_DIR, pkg_dir))
if __name__ == '__main__':
main()