1 #!/usr/bin/env python 2 #===----------------------------------------------------------------------===## 3 # 4 # The LLVM Compiler Infrastructure 5 # 6 # This file is dual licensed under the MIT and the University of Illinois Open 7 # Source Licenses. See LICENSE.TXT for details. 8 # 9 #===----------------------------------------------------------------------===## 10 """ 11 sym_diff - Compare two symbol lists and output the differences. 12 """ 13 14 from argparse import ArgumentParser 15 import sys 16 from sym_check import diff, util 17 18 19 def main(): 20 parser = ArgumentParser( 21 description='Extract a list of symbols from a shared library.') 22 parser.add_argument( 23 '--names-only', dest='names_only', 24 help='Only print symbol names', 25 action='store_true', default=False) 26 parser.add_argument( 27 '-o', '--output', dest='output', 28 help='The output file. stdout is used if not given', 29 type=str, action='store', default=None) 30 parser.add_argument( 31 '--demangle', dest='demangle', action='store_true', default=False) 32 parser.add_argument( 33 'old_syms', metavar='old-syms', type=str, 34 help='The file containing the old symbol list or a library') 35 parser.add_argument( 36 'new_syms', metavar='new-syms', type=str, 37 help='The file containing the new symbol list or a library') 38 args = parser.parse_args() 39 40 old_syms_list = util.extract_or_load(args.old_syms) 41 new_syms_list = util.extract_or_load(args.new_syms) 42 43 added, removed, changed = diff.diff(old_syms_list, new_syms_list) 44 report, is_break = diff.report_diff(added, removed, changed, 45 names_only=args.names_only, 46 demangle=args.demangle) 47 if args.output is None: 48 print(report) 49 else: 50 with open(args.output, 'w') as f: 51 f.write(report + '\n') 52 sys.exit(is_break) 53 54 55 if __name__ == '__main__': 56 main() 57
