1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/chromium/src/base/string16.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,72 @@
1.4 +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "base/string16.h"
1.9 +
1.10 +#if defined(WCHAR_T_IS_UTF16)
1.11 +
1.12 +#error This file should not be used on 2-byte wchar_t systems
1.13 +// If this winds up being needed on 2-byte wchar_t systems, either the
1.14 +// definitions below can be used, or the host system's wide character
1.15 +// functions like wmemcmp can be wrapped.
1.16 +
1.17 +#elif defined(WCHAR_T_IS_UTF32)
1.18 +
1.19 +#include "base/string_util.h"
1.20 +
1.21 +namespace base {
1.22 +
1.23 +int c16memcmp(const char16* s1, const char16* s2, size_t n) {
1.24 + // We cannot call memcmp because that changes the semantics.
1.25 + while (n-- > 0) {
1.26 + if (*s1 != *s2) {
1.27 + // We cannot use (*s1 - *s2) because char16 is unsigned.
1.28 + return ((*s1 < *s2) ? -1 : 1);
1.29 + }
1.30 + ++s1;
1.31 + ++s2;
1.32 + }
1.33 + return 0;
1.34 +}
1.35 +
1.36 +size_t c16len(const char16* s) {
1.37 + const char16 *s_orig = s;
1.38 + while (*s) {
1.39 + ++s;
1.40 + }
1.41 + return s - s_orig;
1.42 +}
1.43 +
1.44 +const char16* c16memchr(const char16* s, char16 c, size_t n) {
1.45 + while (n-- > 0) {
1.46 + if (*s == c) {
1.47 + return s;
1.48 + }
1.49 + ++s;
1.50 + }
1.51 + return 0;
1.52 +}
1.53 +
1.54 +char16* c16memmove(char16* s1, const char16* s2, size_t n) {
1.55 + return reinterpret_cast<char16*>(memmove(s1, s2, n * sizeof(char16)));
1.56 +}
1.57 +
1.58 +char16* c16memcpy(char16* s1, const char16* s2, size_t n) {
1.59 + return reinterpret_cast<char16*>(memcpy(s1, s2, n * sizeof(char16)));
1.60 +}
1.61 +
1.62 +char16* c16memset(char16* s, char16 c, size_t n) {
1.63 + char16 *s_orig = s;
1.64 + while (n-- > 0) {
1.65 + *s = c;
1.66 + ++s;
1.67 + }
1.68 + return s_orig;
1.69 +}
1.70 +
1.71 +} // namespace base
1.72 +
1.73 +template class std::basic_string<char16, base::string16_char_traits>;
1.74 +
1.75 +#endif // WCHAR_T_IS_UTF32
