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