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author | mmentovai@google.com <mmentovai@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-08-27 20:57:35 +0000 |
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committer | mmentovai@google.com <mmentovai@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2008-08-27 20:57:35 +0000 |
commit | d13701900a71240fe1b4074b778133ba9a3461e9 (patch) | |
tree | 3ca3fd78ec07a47dcc2cad83defb977b0ad61e81 /base/string16.cc | |
parent | b8c87bb8ea9f514a8f09a0f2154f8469ba7faf00 (diff) | |
download | chromium_src-d13701900a71240fe1b4074b778133ba9a3461e9.zip chromium_src-d13701900a71240fe1b4074b778133ba9a3461e9.tar.gz chromium_src-d13701900a71240fe1b4074b778133ba9a3461e9.tar.bz2 |
Move std::string16 to base::string16. Don't pollute the std namespace. Don't
assume that all string types can be represented as std::basic_string<CHAR>.
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1464 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/string16.cc')
-rw-r--r-- | base/string16.cc | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/base/string16.cc b/base/string16.cc new file mode 100644 index 0000000..2a7ec9c --- /dev/null +++ b/base/string16.cc @@ -0,0 +1,68 @@ +// Copyright (c) 2006-2008 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/string16.h" + +#if defined(WCHAR_T_IS_UTF16) + +#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) + +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 0; +} + +char16* c16memmove(char16* s1, const char16* s2, size_t n) { + return reinterpret_cast<char16*>(memmove(s1, s2, n * sizeof(char16))); +} + +char16* c16memcpy(char16* s1, const char16* s2, size_t n) { + return reinterpret_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 base + +#endif // WCHAR_T_IS_UTF32 |