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
3 // found in the LICENSE file.
5 #include "base/string16.h"
7 #if defined(WCHAR_T_IS_UTF16)
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
11 // definitions below can be used, or the host system's wide character
12 // functions like wmemcmp can be wrapped.
14 #elif defined(WCHAR_T_IS_UTF32)
18 #include "base/utf_string_conversions.h"
22 int c16memcmp(const char16* s1, const char16* s2, size_t n) {
23 // We cannot call memcmp because that changes the semantics.
26 // We cannot use (*s1 - *s2) because char16 is unsigned.
27 return ((*s1 < *s2) ? -1 : 1);
35 size_t c16len(const char16* s) {
36 const char16 *s_orig = s;
43 const char16* c16memchr(const char16* s, char16 c, size_t n) {
53 char16* c16memmove(char16* s1, const char16* s2, size_t n) {
54 return reinterpret_cast<char16*>(memmove(s1, s2, n * sizeof(char16)));
57 char16* c16memcpy(char16* s1, const char16* s2, size_t n) {
58 return reinterpret_cast<char16*>(memcpy(s1, s2, n * sizeof(char16)));
61 char16* c16memset(char16* s, char16 c, size_t n) {
72 template class std::basic_string<char16, base::string16_char_traits>;
75 std::ostream& operator<<(std::ostream& out, const string16& str) {
76 return out << UTF16ToUTF8(str);
80 #endif // WCHAR_T_IS_UTF32