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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/logging.h" | |
13 #include "base/strings/string_util.h" | |
14 #include "base/strings/utf_string_conversions.h" | |
15 | |
16 namespace base { | |
17 | |
18 std::string GenerateGUID() { | |
19 const int kGUIDSize = 39; | |
20 | |
21 GUID guid; | |
22 HRESULT guid_result = CoCreateGuid(&guid); | |
23 DCHECK(SUCCEEDED(guid_result)); | |
24 if (!SUCCEEDED(guid_result)) | |
25 return std::string(); | |
26 | |
27 std::wstring guid_string; | |
28 int result = StringFromGUID2(guid, | |
29 WriteInto(&guid_string, kGUIDSize), kGUIDSize); | |
30 DCHECK(result == kGUIDSize); | |
31 if (result != kGUIDSize) | |
32 return std::string(); | |
33 | |
34 return WideToUTF8(guid_string.substr(1, guid_string.length() - 2)); | |
35 } | |
36 | |
37 } // namespace base | |
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