version.py

#!/usr/bin/env python3
"""
 SPDX-License-Identifier: MIT

   Copyright (c) 2021, SCANOSS

   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:

   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
"""
import os
import codecs


def read(rel_path):
    """
    Load the specified relative path return the line contents
    :param rel_path: relative file path to load
    :return: file stream reader
    """
    here = os.path.abspath(os.path.dirname(__file__))
    with codecs.open(os.path.join(here, rel_path), 'r') as fp:
        return fp.read()


def get_version(rel_path):
    """
    Extract the version number from the specified file
    :param rel_path: relative path to the file
    :return: version string
    """
    for line in read(rel_path).splitlines():
        if line.startswith('__version__'):
            delim = '"' if '"' in line else "'"
            return line.split(delim)[1]
    else:
        raise RuntimeError("Unable to find version string.")


"""
Load __init__.py from the scanoss package and print the version to stdout
"""
if __name__ == "__main__":
    print(get_version('src/scanoss/__init__.py'))