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// std::collate implementation details, generic version -*- C++ -*-
// Copyright (C) 2001-2022 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
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