| // std::collate implementation details, GNU version -*- C++ -*- |
| |
| // Copyright (C) 2001, 2002, 2005 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 2, 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. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| // |
| // ISO C++ 14882: 22.2.4.1.2 collate virtual functions |
| // |
| |
| // Written by Benjamin Kosnik <bkoz@redhat.com> |
| |
| #include <locale> |
| #include <bits/c++locale_internal.h> |
| |
| _GLIBCXX_BEGIN_NAMESPACE(std) |
| |
| // 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 |
| { |
| int __cmp = __strcoll_l(__one, __two, _M_c_locale_collate); |
| return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); |
| } |
| |
| template<> |
| size_t |
| collate<char>::_M_transform(char* __to, const char* __from, |
| size_t __n) const |
| { return __strxfrm_l(__to, __from, __n, _M_c_locale_collate); } |
| |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| template<> |
| int |
| collate<wchar_t>::_M_compare(const wchar_t* __one, |
| const wchar_t* __two) const |
| { |
| int __cmp = __wcscoll_l(__one, __two, _M_c_locale_collate); |
| 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 |
| { return __wcsxfrm_l(__to, __from, __n, _M_c_locale_collate); } |
| #endif |
| |
| _GLIBCXX_END_NAMESPACE |
