88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
|
// Copyright 2013 The Chromium Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
#include "base/strings/string16.h"
|
||
|
|
|
||
|
|
#if defined(WCHAR_T_IS_UTF16) && !defined(_AIX)
|
||
|
|
|
||
|
|
#error This file should not be used on 2-byte wchar_t systems
|
||
|
|
// If this winds up being needed on 2-byte wchar_t systems, either the
|
||
|
|
// definitions below can be used, or the host system's wide character
|
||
|
|
// functions like wmemcmp can be wrapped.
|
||
|
|
|
||
|
|
#elif defined(WCHAR_T_IS_UTF32)
|
||
|
|
|
||
|
|
#include <ostream>
|
||
|
|
|
||
|
|
#include "base/strings/string_piece.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
int c16memcmp(const char16* s1, const char16* s2, size_t n) {
|
||
|
|
// We cannot call memcmp because that changes the semantics.
|
||
|
|
while (n-- > 0) {
|
||
|
|
if (*s1 != *s2) {
|
||
|
|
// We cannot use (*s1 - *s2) because char16 is unsigned.
|
||
|
|
return ((*s1 < *s2) ? -1 : 1);
|
||
|
|
}
|
||
|
|
++s1;
|
||
|
|
++s2;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t c16len(const char16* s) {
|
||
|
|
const char16 *s_orig = s;
|
||
|
|
while (*s) {
|
||
|
|
++s;
|
||
|
|
}
|
||
|
|
return s - s_orig;
|
||
|
|
}
|
||
|
|
|
||
|
|
const char16* c16memchr(const char16* s, char16 c, size_t n) {
|
||
|
|
while (n-- > 0) {
|
||
|
|
if (*s == c) {
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
++s;
|
||
|
|
}
|
||
|
|
return nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
char16* c16memmove(char16* s1, const char16* s2, size_t n) {
|
||
|
|
return static_cast<char16*>(memmove(s1, s2, n * sizeof(char16)));
|
||
|
|
}
|
||
|
|
|
||
|
|
char16* c16memcpy(char16* s1, const char16* s2, size_t n) {
|
||
|
|
return static_cast<char16*>(memcpy(s1, s2, n * sizeof(char16)));
|
||
|
|
}
|
||
|
|
|
||
|
|
char16* c16memset(char16* s, char16 c, size_t n) {
|
||
|
|
char16 *s_orig = s;
|
||
|
|
while (n-- > 0) {
|
||
|
|
*s = c;
|
||
|
|
++s;
|
||
|
|
}
|
||
|
|
return s_orig;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace string16_internals {
|
||
|
|
|
||
|
|
std::ostream& operator<<(std::ostream& out, const string16& str) {
|
||
|
|
return out << base::StringPiece16(str);
|
||
|
|
}
|
||
|
|
|
||
|
|
void PrintTo(const string16& str, std::ostream* out) {
|
||
|
|
*out << str;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace string16_internals
|
||
|
|
|
||
|
|
} // namespace base
|
||
|
|
|
||
|
|
template class std::
|
||
|
|
basic_string<base::char16, base::string16_internals::string16_char_traits>;
|
||
|
|
|
||
|
|
#endif // WCHAR_T_IS_UTF32
|