| // std::collate implementation details, generic version -*- C++ -*- |
| |
| // Copyright (C) 2001-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| // |
| // ISO C++ 14882: 22.2.4.1.2 collate virtual functions |
| // |
| |
| // Written by Benjamin Kosnik <bkoz@redhat.com> |
| |
| #include <locale> |
| #include <cstring> |
| |
| namespace std _GLIBCXX_VISIBILITY(default) |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| // These are basically extensions to char_traits, and perhaps should |
| // be put there instead of here. |
| template<> |
| int |
| collate<char>::_M_compare(const char* __one, |
| const char* __two) const throw() |
| { |
| int __cmp = strcoll(__one, __two); |
| return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); |
| } |
| |
| template<> |
| size_t |
| collate<char>::_M_transform(char* __to, const char* __from, |
| size_t __n) const throw() |
| { return strxfrm(__to, __from, __n); } |
| |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| template<> |
| int |
| collate<wchar_t>::_M_compare(const wchar_t* __one, |
| const wchar_t* __two) const throw() |
| { |
| int __cmp = wcscoll(__one, __two); |
| return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); |
| } |
| |
| template<> |
| size_t |
| collate<wchar_t>::_M_transform(wchar_t* __to, const wchar_t* __from, |
| size_t __n) const throw() |
| { return wcsxfrm(__to, __from, __n); } |
| #endif |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace |
