73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
// std::collate implementation details, GNU version -*- C++ -*-
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// Copyright (C) 2001 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 22.2.4.1.2 collate virtual functions
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//
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// Written by Benjamin Kosnik <bkoz@redhat.com>
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#include <locale>
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namespace std
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{
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// These are basically extensions to char_traits, and perhaps should
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// be put there instead of here.
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template<>
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int
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collate<char>::_M_compare(const char* __one, const char* __two) const
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{
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int __cmp = __strcoll_l(__one, __two, _M_c_locale_collate);
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return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0);
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}
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template<>
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size_t
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collate<char>::_M_transform(char* __to, const char* __from,
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size_t __n) const
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{ return __strxfrm_l(__to, __from, __n, _M_c_locale_collate); }
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<>
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int
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collate<wchar_t>::_M_compare(const wchar_t* __one,
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const wchar_t* __two) const
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{
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int __cmp = __wcscoll_l(__one, __two, _M_c_locale_collate);
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return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0);
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}
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template<>
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size_t
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collate<wchar_t>::_M_transform(wchar_t* __to, const wchar_t* __from,
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size_t __n) const
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{ return __wcsxfrm_l(__to, __from, __n, _M_c_locale_collate); }
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#endif
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}
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