get-extras-packages

#!/usr/bin/env python3
# Copyright (c) 2019 Red Hat, Inc.
#
# 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.

import configparser
import os
import sys


def get_extras_packages(path):
    config = configparser.ConfigParser()
    config.read('setup.cfg')
    config = dict(dict(config.items()).get('extras', {}).items())

    extras = set()
    for name, packages in config.items():
        for package in packages.split('\n'):
            package = package.strip()
            if '#' in package:
                package = package.split('#')[0]
            if not package:
                continue
            extras.add(package)
        outpath = os.path.join(path, name, 'requirements.txt')
        os.mkdir(os.path.dirname(outpath))
        with open(outpath, 'w') as outfile:
            outfile.write(packages)

    return " ".join(extras)


if __name__ == '__main__':
    path = '/output'
    if len(sys.argv) > 1:
        path = sys.argv[1]
    print(get_extras_packages(path))