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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/guid.h" | 5 #include "base/guid.h" |
6 | 6 |
| 7 #include "base/strings/string_util.h" |
| 8 |
7 namespace base { | 9 namespace base { |
8 | 10 |
9 bool IsValidGUID(const std::string& guid) { | 11 bool IsValidGUID(const std::string& guid) { |
10 const size_t kGUIDLength = 36U; | 12 const size_t kGUIDLength = 36U; |
11 if (guid.length() != kGUIDLength) | 13 if (guid.length() != kGUIDLength) |
12 return false; | 14 return false; |
13 | 15 |
14 const std::string hexchars = "0123456789ABCDEF"; | 16 for (size_t i = 0; i < guid.length(); ++i) { |
15 for (uint32 i = 0; i < guid.length(); ++i) { | |
16 char current = guid[i]; | 17 char current = guid[i]; |
17 if (i == 8 || i == 13 || i == 18 || i == 23) { | 18 if (i == 8 || i == 13 || i == 18 || i == 23) { |
18 if (current != '-') | 19 if (current != '-') |
19 return false; | 20 return false; |
20 } else { | 21 } else { |
21 if (hexchars.find(current) == std::string::npos) | 22 if (!IsHexDigit(current)) |
22 return false; | 23 return false; |
23 } | 24 } |
24 } | 25 } |
25 | 26 |
26 return true; | 27 return true; |
27 } | 28 } |
28 | 29 |
29 } // namespace base | 30 } // namespace base |
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