b2help-releases

#!/usr/bin/env b2anypython
# -*- coding: utf-8 -*-
from __future__ import print_function
import sys
import textwrap
import argparse
from versioning import supported_release
from setup_tools import NoExitHelpAction


def get_argument_parser():
    description = textwrap.dedent('''\n
    This command just prints the current recommended release of the Belle II software.
    If you provide release_to_check, it will check if this version is supported or to which more recent version you should update.
    The RELEASE_TO_CHECK doesn't have to be complete. It is enough if it contains the prefix 'release-' or 'light'.
    ''')
    parser = argparse.ArgumentParser(prog='b2help-releases',
                                     description=description,
                                     add_help=False,
                                     formatter_class=argparse.RawDescriptionHelpFormatter)

    parser.add_argument('release',
                        metavar='RELEASE_TO_CHECK',
                        type=str,
                        nargs='?',
                        help='Allows providing a release to check.')
    parser.add_argument('--help', '-h', '-?',
                        nargs=0,
                        action=NoExitHelpAction)
    return parser


if __name__ == '__main__':

    args = get_argument_parser().parse_args()

    if args.help:
        print("\nThe recommended release is:", file=sys.stderr)
        print(supported_release())

    # check whether the provided release is supported
    elif args.release:
        release = sys.argv[1]
        supported = supported_release(release)
        if release == 'light':
            print("The recommended light release is %s" % supported)
        elif supported != release:
            print("Warning: The release %s is not supported any more. Please update to %s" % (release, supported))
        else:
            print("The release %s is supported" % release)

    # if no options provided just print the supported release
    else:
        print(supported_release())