| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/guid.h" |
| |
| #include <stdlib.h> |
| |
| #include <objbase.h> |
| #include <windows.h> |
| |
| #include "base/basictypes.h" |
| #include "base/logging.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| |
| namespace base { |
| |
| std::string GenerateGUID() { |
| const int kGUIDSize = 39; |
| |
| GUID guid; |
| HRESULT guid_result = CoCreateGuid(&guid); |
| DCHECK(SUCCEEDED(guid_result)); |
| if (!SUCCEEDED(guid_result)) |
| return std::string(); |
| |
| std::wstring guid_string; |
| int result = StringFromGUID2(guid, |
| WriteInto(&guid_string, kGUIDSize), kGUIDSize); |
| DCHECK(result == kGUIDSize); |
| if (result != kGUIDSize) |
| return std::string(); |
| |
| return WideToUTF8(guid_string.substr(1, guid_string.length() - 2)); |
| } |
| |
| } // namespace base |