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7bfaa0f09d
This is an ongoing series of commits that are reformatting our Python code. Reformatting is done with `black`. If you end up having problems merging this commit because you have made changes to a python file, the best way to handle that is to run git checkout --ours <yourfile> and then reformat it with black. If you run into any problems, post to discourse about it and we will try to help. RFC Thread below: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style Reviewed By: #libc, kwk, Mordante Differential Revision: https://reviews.llvm.org/D150763
100 lines
2.8 KiB
Python
Executable File
100 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python
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# ===----------------------------------------------------------------------===##
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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# ===----------------------------------------------------------------------===##
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"""
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sym_diff - Compare two symbol lists and output the differences.
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"""
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from argparse import ArgumentParser
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import sys
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from libcxx.sym_check import diff, util
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def main():
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parser = ArgumentParser(
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description="Extract a list of symbols from a shared library."
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)
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parser.add_argument(
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"--names-only",
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dest="names_only",
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help="Only print symbol names",
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action="store_true",
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default=False,
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)
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parser.add_argument(
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"--removed-only",
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dest="removed_only",
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help="Only print removed symbols",
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action="store_true",
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default=False,
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)
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parser.add_argument(
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"--only-stdlib-symbols",
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dest="only_stdlib",
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help="Filter all symbols not related to the stdlib",
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action="store_true",
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default=False,
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)
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parser.add_argument(
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"--strict",
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dest="strict",
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help="Exit with a non-zero status if any symbols " "differ",
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action="store_true",
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default=False,
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)
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parser.add_argument(
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"-o",
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"--output",
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dest="output",
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help="The output file. stdout is used if not given",
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type=str,
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action="store",
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default=None,
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)
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parser.add_argument(
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"--demangle", dest="demangle", action="store_true", default=False
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)
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parser.add_argument(
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"old_syms",
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metavar="old-syms",
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type=str,
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help="The file containing the old symbol list or a library",
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)
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parser.add_argument(
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"new_syms",
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metavar="new-syms",
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type=str,
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help="The file containing the new symbol list or a library",
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)
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args = parser.parse_args()
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old_syms_list = util.extract_or_load(args.old_syms)
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new_syms_list = util.extract_or_load(args.new_syms)
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if args.only_stdlib:
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old_syms_list, _ = util.filter_stdlib_symbols(old_syms_list)
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new_syms_list, _ = util.filter_stdlib_symbols(new_syms_list)
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added, removed, changed = diff.diff(old_syms_list, new_syms_list)
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if args.removed_only:
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added = {}
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report, is_break, is_different = diff.report_diff(
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added, removed, changed, names_only=args.names_only, demangle=args.demangle
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)
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if args.output is None:
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print(report)
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else:
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with open(args.output, "w") as f:
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f.write(report + "\n")
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exit_code = 1 if is_break or (args.strict and is_different) else 0
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sys.exit(exit_code)
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if __name__ == "__main__":
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main()
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