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#!/usr/bin/python3
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import glob
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import re
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import sys
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import argparse
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import json
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all_subimages = {re.sub(r"^Dockerfile-", "", dockerfile) for dockerfile in glob.glob("Dockerfile-*")}
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core_subimages = {si for si in all_subimages if si.startswith("core")}
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rest_subimages = all_subimages - core_subimages
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parser = argparse.ArgumentParser(description='List subimages.')
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parser.add_argument('--core', action='store_true',
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default=False, help='List core subimages')
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parser.add_argument('--rest', action='store_true',
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default=False, help='List rest subimages')
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parser.add_argument('--json', action='store_true',
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default=False, help='Return list as JSON')
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args = parser.parse_args()
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def list_(subimages):
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subimages = sorted(subimages)
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if args.json:
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print(json.dumps(subimages))
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else:
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print("\n".join(subimages))
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if not args.core and not args.rest:
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list_(core_subimages | rest_subimages)
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if args.core:
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list_(core_subimages)
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if args.rest:
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list_(rest_subimages)
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