[cctest] adding --help option to output basic information about cctest

test/cctest/cctest.cc

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 155 matching lines @@
   _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
   _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
   _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
   _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
   _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_FILE);
   _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
   _set_error_mode(_OUT_TO_STDERR);
 #endif  // V8_CC_MSVC
 #endif  // V8_OS_WIN
 
+  // hack to print cctest specific flags
+  for (int i = 1; i < argc; i++) {
+    char* arg = argv[i];
+    if ((strcmp(arg, "--help") == 0) || (strcmp(arg, "-h") == 0)) {
+      printf("Usage: %s [--list] [[V8_FLAGS] CCTEST]\n", argv[0]);
+      printf("\n");
+      printf("Options:\n");
+      printf("  --list:   list all cctests\n");
+      printf("  CCTEST:   cctest identfier returned by --list\n");
+      printf("  D8_FLAGS: see d8 output below\n");
+      printf("\n\n");
+    }
+  }
+
   v8::V8::InitializeICU();
   v8::Platform* platform = v8::platform::CreateDefaultPlatform();
   v8::V8::InitializePlatform(platform);
   v8::internal::FlagList::SetFlagsFromCommandLine(&argc, argv, true);
   v8::V8::Initialize();
   v8::V8::InitializeExternalStartupData(argv[0]);
 
   CcTestArrayBufferAllocator array_buffer_allocator;
   CcTest::set_array_buffer_allocator(&array_buffer_allocator);
 
@@ skipping 54 matching lines @@
   CcTest::TearDown();
   // TODO(svenpanne) See comment above.
   // if (!disable_automatic_dispose_) v8::V8::Dispose();
   v8::V8::ShutdownPlatform();
   delete platform;
   return 0;
 }
 
 RegisterThreadedTest *RegisterThreadedTest::first_ = NULL;
 int RegisterThreadedTest::count_ = 0;