Function main

tools/reduce.py:278–349

()

def main():
    # TODO: add --hang option to detect code which impacts the analysis time
    def show_syntax():
        print('Syntax:')
        print('  reduce.py --exe <cppcheck executable> --exe_args <full command> --expected <expected text output> --file <source file> [--segfault]')
        print('')
        print("Example. source file = foo/bar.c")
        print(
            '  reduce.py --exe ./cppcheck --exe_args " --enable=style" --expected "Variable \'x\' is reassigned" --file foo/bar.c')
        sys.exit(1)

    if len(sys.argv) == 1:
        show_syntax()
    parser = argparse.ArgumentParser()
    parser.add_argument('-exe', '--exe', required=True, help="cppcheck executable")
    parser.add_argument('-exe_args', '--exe_args', required=False, default="", help="cppcheck executable commands")
    parser.add_argument('-expected', '--expected', required=True, help="expected text output")
    parser.add_argument('-file', '--file', required=True, help="source file")
    parser.add_argument('-segfault', '--segfault', required=False, action='store_true')
    args = parser.parse_args()

    arg_file = args.file
    arg_cmd = [args.exe] + args.exe_args.split() + [arg_file]
    arg_expected = args.expected
    arg_segfault = args.segfault
    try:
        reduce = Reduce(arg_cmd, arg_expected, arg_file, arg_segfault)
    except RuntimeError as e:
        print(e)
        show_syntax()

    reduce.print_info()

    # reduce..
    print('Make sure error can be reproduced...')
    t = time.time()
    if not reduce.runtool():
        print("Cannot reproduce")
        sys.exit(1)
    elapsed_time = time.time() - t
    reduce.set_elapsed_time(elapsed_time)
    print('elapsed_time: {}'.format(elapsed_time))

    with open(arg_file, 'rt') as f:
        filedata = f.readlines()

    reduce.writeorigfile(filedata)

    while True:
        filedata1 = list(filedata)

        print('remove preprocessor directives...')
        reduce.removedirectives(filedata)

        print('remove blocks...')
        filedata = reduce.removeblocks(filedata)

        print('remove comments...')