Function ParseGoogleTestFlagsOnlyImpl

test/common/gtest/gtest.cpp:6805–6871

// instantiated to either char or wchar_t.
template <typename CharType>
void ParseGoogleTestFlagsOnlyImpl(int* argc, CharType** argv) {
  for (int i = 1; i < *argc; i++) {
    const std::string arg_string = StreamableToString(argv[i]);
    const char* const arg = arg_string.c_str();

    using internal::ParseBoolFlag;
    using internal::ParseInt32Flag;
    using internal::ParseStringFlag;

    // Do we see a Google Test flag?
    if (ParseBoolFlag(arg, kAlsoRunDisabledTestsFlag,
                      &GTEST_FLAG(also_run_disabled_tests)) ||
        ParseBoolFlag(arg, kBreakOnFailureFlag,
                      &GTEST_FLAG(break_on_failure)) ||
        ParseBoolFlag(arg, kCatchExceptionsFlag,
                      &GTEST_FLAG(catch_exceptions)) ||
        ParseStringFlag(arg, kColorFlag, &GTEST_FLAG(color)) ||
        ParseStringFlag(arg, kDeathTestStyleFlag,
                        &GTEST_FLAG(death_test_style)) ||
        ParseBoolFlag(arg, kDeathTestUseFork,
                      &GTEST_FLAG(death_test_use_fork)) ||
        ParseStringFlag(arg, kFilterFlag, &GTEST_FLAG(filter)) ||
        ParseStringFlag(arg, kInternalRunDeathTestFlag,
                        &GTEST_FLAG(internal_run_death_test)) ||
        ParseBoolFlag(arg, kListTestsFlag, &GTEST_FLAG(list_tests)) ||
        ParseStringFlag(arg, kOutputFlag, &GTEST_FLAG(output)) ||
        ParseBoolFlag(arg, kPrintTimeFlag, &GTEST_FLAG(print_time)) ||
        ParseInt32Flag(arg, kRandomSeedFlag, &GTEST_FLAG(random_seed)) ||
        ParseInt32Flag(arg, kRepeatFlag, &GTEST_FLAG(repeat)) ||
        ParseBoolFlag(arg, kShuffleFlag, &GTEST_FLAG(shuffle)) ||
        ParseInt32Flag(arg, kStackTraceDepthFlag,
                       &GTEST_FLAG(stack_trace_depth)) ||
        ParseStringFlag(arg, kStreamResultToFlag,
                        &GTEST_FLAG(stream_result_to)) ||
        ParseBoolFlag(arg, kThrowOnFailureFlag,
                      &GTEST_FLAG(throw_on_failure))
        ) {
      // Yes.  Shift the remainder of the argv list left by one.  Note
      // that argv has (*argc + 1) elements, the last one always being
      // NULL.  The following loop moves the trailing NULL element as
      // well.
      for (int j = i; j != *argc; j++) {
        argv[j] = argv[j + 1];
      }

      // Decrements the argument count.
      (*argc)--;

      // We also need to decrement the iterator as we just removed
      // an element.
      i--;
    } else if (arg_string == "--help" || arg_string == "-h" ||
               arg_string == "-?" || arg_string == "/?" ||
               HasGoogleTestFlagPrefix(arg)) {
      // Both help flag and unrecognized Google Test flags (excluding
      // internal ones) trigger help display.
      g_help_flag = true;
    }