74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
// std::collate implementation details, GNU version -*- C++ -*-
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// Copyright (C) 2001-2020 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 3, 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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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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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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#include <bits/c++locale_internal.h>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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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,
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const char* __two) const throw()
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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 throw()
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{ return __strxfrm_l(__to, __from, __n, _M_c_locale_collate); }
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#ifdef _GLIBCXX_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 throw()
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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 throw()
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{ return __wcsxfrm_l(__to, __from, __n, _M_c_locale_collate); }
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#endif
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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