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61 lines
2.3 KiB
Python
61 lines
2.3 KiB
Python
import argparse
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import json
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import requests
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import sys
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def version_to_list(version):
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return list(map(int, version.split('.')))
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def odd_unstable(version_str, selected):
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version = version_to_list(version_str)
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if len(version) < 2:
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return True
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even = version[1] % 2 == 0
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prerelease = version[1] >= 90
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stable = even and not prerelease
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if selected == 'stable':
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return stable
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else:
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return True
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def no_policy(version, selected):
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return True
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version_policies = {
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'odd-unstable': odd_unstable,
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'none': no_policy,
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}
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def make_version_policy(version_predicate, selected):
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return lambda version: version_predicate(version, selected)
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parser = argparse.ArgumentParser(description='Find latest version for a GNOME package by crawling their release server.')
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parser.add_argument('package-name', help='Name of the directory in https://ftp.gnome.org/pub/GNOME/sources/ containing the package.')
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parser.add_argument('version-policy', help='Policy determining which versions are considered stable. For most GNOME packages, odd minor versions are unstable but there are exceptions.', choices=version_policies.keys(), nargs='?', default='odd-unstable')
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parser.add_argument('requested-release', help='Most of the time, we will want to update to stable version but sometimes it is useful to test.', choices=['stable', 'unstable'], nargs='?', default='stable')
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if __name__ == '__main__':
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args = parser.parse_args()
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package_name = getattr(args, 'package-name')
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requested_release = getattr(args, 'requested-release')
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version_predicate = version_policies[getattr(args, 'version-policy')]
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version_policy = make_version_policy(version_predicate, requested_release)
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# The structure of cache.json: https://gitlab.gnome.org/Infrastructure/sysadmin-bin/blob/master/ftpadmin#L762
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cache = json.loads(requests.get('https://ftp.gnome.org/pub/GNOME/sources/{}/cache.json'.format(package_name)).text)
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if type(cache) != list or cache[0] != 4:
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print('Unknown format of cache.json file.', file=sys.stderr)
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sys.exit(1)
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versions = cache[2][package_name]
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versions = sorted(filter(version_policy, versions), key=version_to_list)
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if len(versions) == 0:
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print('No versions matched.', file=sys.stderr)
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sys.exit(1)
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print(versions[-1])
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