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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 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/string16.h" | 5 #include "base/string16.h" |
6 | 6 |
7 #if defined(WCHAR_T_IS_UTF16) | 7 #if defined(WCHAR_T_IS_UTF16) |
8 | 8 |
9 #error This file should not be used on 2-byte wchar_t systems | 9 #error This file should not be used on 2-byte wchar_t systems |
10 // If this winds up being needed on 2-byte wchar_t systems, either the | 10 // If this winds up being needed on 2-byte wchar_t systems, either the |
11 // definitions below can be used, or the host system's wide character | 11 // definitions below can be used, or the host system's wide character |
12 // functions like wmemcmp can be wrapped. | 12 // functions like wmemcmp can be wrapped. |
13 | 13 |
14 #elif defined(WCHAR_T_IS_UTF32) | 14 #elif defined(WCHAR_T_IS_UTF32) |
15 | 15 |
16 #include "base/string_util.h" | 16 #include "base/string_util.h" |
| 17 #include "base/utf_string_conversions.h" |
17 | 18 |
18 namespace base { | 19 namespace base { |
19 | 20 |
20 int c16memcmp(const char16* s1, const char16* s2, size_t n) { | 21 int c16memcmp(const char16* s1, const char16* s2, size_t n) { |
21 // We cannot call memcmp because that changes the semantics. | 22 // We cannot call memcmp because that changes the semantics. |
22 while (n-- > 0) { | 23 while (n-- > 0) { |
23 if (*s1 != *s2) { | 24 if (*s1 != *s2) { |
24 // We cannot use (*s1 - *s2) because char16 is unsigned. | 25 // We cannot use (*s1 - *s2) because char16 is unsigned. |
25 return ((*s1 < *s2) ? -1 : 1); | 26 return ((*s1 < *s2) ? -1 : 1); |
26 } | 27 } |
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67 | 68 |
68 } // namespace base | 69 } // namespace base |
69 | 70 |
70 template class std::basic_string<char16, base::string16_char_traits>; | 71 template class std::basic_string<char16, base::string16_char_traits>; |
71 | 72 |
72 std::ostream& operator<<(std::ostream& out, const string16& str) { | 73 std::ostream& operator<<(std::ostream& out, const string16& str) { |
73 return out << UTF16ToUTF8(str); | 74 return out << UTF16ToUTF8(str); |
74 } | 75 } |
75 | 76 |
76 #endif // WCHAR_T_IS_UTF32 | 77 #endif // WCHAR_T_IS_UTF32 |
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