1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/guid.h" 6 7 #include <stdlib.h> 8 9 #include <objbase.h> 10 #include <windows.h> 11 12 #include "base/basictypes.h" 13 #include "base/logging.h" 14 #include "base/strings/string_util.h" 15 #include "base/strings/utf_string_conversions.h" 16 17 namespace base { 18 19 std::string GenerateGUID() { 20 const int kGUIDSize = 39; 21 22 GUID guid; 23 HRESULT guid_result = CoCreateGuid(&guid); 24 DCHECK(SUCCEEDED(guid_result)); 25 if (!SUCCEEDED(guid_result)) 26 return std::string(); 27 28 std::wstring guid_string; 29 int result = StringFromGUID2(guid, 30 WriteInto(&guid_string, kGUIDSize), kGUIDSize); 31 DCHECK(result == kGUIDSize); 32 if (result != kGUIDSize) 33 return std::string(); 34 35 return WideToUTF8(guid_string.substr(1, guid_string.length() - 2)); 36 } 37 38 } // namespace guid 39
