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73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
#!/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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parser.add_argument(
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'--names-only', dest='names_only',
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help='Only print symbol names',
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action='store_true', default=False)
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parser.add_argument(
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'--removed-only', dest='removed_only',
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help='Only print removed symbols',
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action='store_true', default=False)
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parser.add_argument('--only-stdlib-symbols', dest='only_stdlib',
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help="Filter all symbols not related to the stdlib",
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action='store_true', default=False)
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parser.add_argument('--strict', dest='strict',
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help="Exit with a non-zero status if any symbols "
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"differ",
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action='store_true', default=False)
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parser.add_argument(
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'-o', '--output', dest='output',
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help='The output file. stdout is used if not given',
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type=str, action='store', default=None)
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parser.add_argument(
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'--demangle', dest='demangle', action='store_true', default=False)
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parser.add_argument(
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'old_syms', metavar='old-syms', type=str,
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help='The file containing the old symbol list or a library')
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parser.add_argument(
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'new_syms', metavar='new-syms', type=str,
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help='The file containing the new symbol list or a library')
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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,
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demangle=args.demangle)
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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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