6ffdff853c
Previously, the signature-patterns.csv file included a lot of
implementation details, e.g. the signatures of dex members or inner
classes that are not part of any API, including the hidden API.
This change will remove all member signatures and inner class names
from the file and replace them with just the outermost qualified class
name.
That will still leave some implementation details, e.g. the names of
implementation only classes and packages.
Bug: 194063708
Test: atest --host verify_overlaps_test signature_patterns_test
m out/soong/hiddenapi/hiddenapi-flags.csv
- manually change files to cause difference in flags to check
that it detects the differences.
Change-Id: I9de6a2a6129e875e19f7ded5fae578cbdb584660
67 lines
2.4 KiB
Python
Executable File
67 lines
2.4 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright (C) 2021 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Generate a set of signature patterns from the modular flags generated by a
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bootclasspath_fragment that can be used to select a subset of monolithic flags
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against which the modular flags can be compared.
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"""
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import argparse
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import csv
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def dict_reader(input):
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return csv.DictReader(input, delimiter=',', quotechar='|', fieldnames=['signature'])
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def produce_patterns_from_file(file):
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with open(file, 'r') as f:
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return produce_patterns_from_stream(f)
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def produce_patterns_from_stream(stream):
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# Read in all the signatures into a list and remove member names.
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patterns = set()
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for row in dict_reader(stream):
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signature = row['signature']
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text = signature.removeprefix("L")
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# Remove the class specific member signature
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pieces = text.split(";->")
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qualifiedClassName = pieces[0]
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# Remove inner class names as they cannot be separated from the containing outer class.
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pieces = qualifiedClassName.split("$", maxsplit=1)
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pattern = pieces[0]
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patterns.add(pattern)
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patterns = list(patterns)
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patterns.sort()
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return patterns
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def main(args):
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args_parser = argparse.ArgumentParser(description='Generate a set of signature patterns that select a subset of monolithic hidden API files.')
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args_parser.add_argument('--flags', help='The stub flags file which contains an entry for every dex member')
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args_parser.add_argument('--output', help='Generated signature prefixes')
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args = args_parser.parse_args(args)
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# Read in all the patterns into a list.
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patterns = produce_patterns_from_file(args.flags)
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# Write out all the patterns.
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with open(args.output, 'w') as outputFile:
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for pattern in patterns:
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outputFile.write(pattern)
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outputFile.write("\n")
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if __name__ == "__main__":
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main(sys.argv[1:])
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