ipc/chromium/src/base/string16.cc@6474c204b198 (annotated)
ipc/chromium/src/base/string16.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #include "base/string16.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #if defined(WCHAR_T_IS_UTF16) |
| michael@0 | 8 | |
| michael@0 | 9 | #error This file should not be used on 2-byte wchar_t systems |
| michael@0 | 10 | // If this winds up being needed on 2-byte wchar_t systems, either the |
| michael@0 | 11 | // definitions below can be used, or the host system's wide character |
| michael@0 | 12 | // functions like wmemcmp can be wrapped. |
| michael@0 | 13 | |
| michael@0 | 14 | #elif defined(WCHAR_T_IS_UTF32) |
| michael@0 | 15 | |
| michael@0 | 16 | #include "base/string_util.h" |
| michael@0 | 17 | |
| michael@0 | 18 | namespace base { |
| michael@0 | 19 | |
| michael@0 | 20 | int c16memcmp(const char16* s1, const char16* s2, size_t n) { |
| michael@0 | 21 | // We cannot call memcmp because that changes the semantics. |
| michael@0 | 22 | while (n-- > 0) { |
| michael@0 | 23 | if (*s1 != *s2) { |
| michael@0 | 24 | // We cannot use (*s1 - *s2) because char16 is unsigned. |
| michael@0 | 25 | return ((*s1 < *s2) ? -1 : 1); |
| michael@0 | 26 | } |
| michael@0 | 27 | ++s1; |
| michael@0 | 28 | ++s2; |
| michael@0 | 29 | } |
| michael@0 | 30 | return 0; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | size_t c16len(const char16* s) { |
| michael@0 | 34 | const char16 *s_orig = s; |
| michael@0 | 35 | while (*s) { |
| michael@0 | 36 | ++s; |
| michael@0 | 37 | } |
| michael@0 | 38 | return s - s_orig; |
| michael@0 | 39 | } |
| michael@0 | 40 | |
| michael@0 | 41 | const char16* c16memchr(const char16* s, char16 c, size_t n) { |
| michael@0 | 42 | while (n-- > 0) { |
| michael@0 | 43 | if (*s == c) { |
| michael@0 | 44 | return s; |
| michael@0 | 45 | } |
| michael@0 | 46 | ++s; |
| michael@0 | 47 | } |
| michael@0 | 48 | return 0; |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | char16* c16memmove(char16* s1, const char16* s2, size_t n) { |
| michael@0 | 52 | return reinterpret_cast<char16*>(memmove(s1, s2, n * sizeof(char16))); |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | char16* c16memcpy(char16* s1, const char16* s2, size_t n) { |
| michael@0 | 56 | return reinterpret_cast<char16*>(memcpy(s1, s2, n * sizeof(char16))); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | char16* c16memset(char16* s, char16 c, size_t n) { |
| michael@0 | 60 | char16 *s_orig = s; |
| michael@0 | 61 | while (n-- > 0) { |
| michael@0 | 62 | *s = c; |
| michael@0 | 63 | ++s; |
| michael@0 | 64 | } |
| michael@0 | 65 | return s_orig; |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | } // namespace base |
| michael@0 | 69 | |
| michael@0 | 70 | template class std::basic_string<char16, base::string16_char_traits>; |
| michael@0 | 71 | |
| michael@0 | 72 | #endif // WCHAR_T_IS_UTF32 |
