int main()

in tools/diff/diff.c [66:164]
83 lines of code
20 McCabe index (conditional complexity)

int main(int argc, const char *argv[])
{
  apr_pool_t *pool;
  svn_stream_t *ostream;
  svn_error_t *svn_err;
  svn_boolean_t has_changes;
  svn_diff_file_options_t *diff_options;
  apr_array_header_t *options_array;
  int i;
  const char *from = NULL;
  const char *to = NULL;
  svn_boolean_t show_c_function = FALSE;
  svn_boolean_t no_more_options = FALSE;

  apr_initialize();
  atexit(apr_terminate);

  pool = svn_pool_create(NULL);

  svn_err = svn_stream_for_stdout(&ostream, pool);
  if (svn_err)
    {
      svn_handle_error2(svn_err, stdout, FALSE, "diff: ");
      return 2;
    }

  options_array = apr_array_make(pool, 0, sizeof(const char *));

  diff_options = svn_diff_file_options_create(pool);

  for (i = 1 ; i < argc ; i++)
    {
      if (!no_more_options && (argv[i][0] == '-'))
        {
          /* Special case: '--' means "no more options follow" */
          if (argv[i][1] == '-' && !argv[i][2])
            {
              no_more_options = TRUE;
              continue;
            }
          /* Special case: we need to detect '-p' and handle it specially */
          if (argv[i][1] == 'p' && !argv[i][2])
            {
              show_c_function = TRUE;
              continue;
            }
          if (argv[i][1] == 'w' && !argv[i][2])
            {
              diff_options->ignore_space = svn_diff_file_ignore_space_all;
              continue;
            }

          APR_ARRAY_PUSH(options_array, const char *) = argv[i];

          /* Special case: '-U' takes an argument, so capture the
           * next argument in the array. */
          if (argv[i][1] == 'U' && !argv[i][2])
            {
              i++;
              APR_ARRAY_PUSH(options_array, const char *) = argv[i];
            }
        }
      else
        {
          if (from == NULL)
            from = argv[i];
          else if (to == NULL)
            to = argv[i];
          else
            {
              print_usage(ostream, argv[0], pool);
              return 2;
            }
        }
    }

  if (!from || !to)
    {
      print_usage(ostream, argv[0], pool);
      return 2;
    }

  svn_err = svn_diff_file_options_parse(diff_options, options_array, pool);
  if (svn_err)
    {
      svn_handle_error2(svn_err, stdout, FALSE, "diff: ");
      return 2;
    }

  svn_err = do_diff(ostream, from, to, &has_changes,
                    diff_options, show_c_function, pool);
  if (svn_err)
    {
      svn_handle_error2(svn_err, stdout, FALSE, "diff: ");
      return 2;
    }

  return has_changes ? 1 : 0;
}