57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
73 lines
2.7 KiB
Python
Executable file
73 lines
2.7 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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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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