libstdc++-v3/config/locale/dragonfly/collate_members.cc

   1 // std::collate implementation details, DragonFly version -*- C++ -*-
   2
   3 // Copyright (C) 2015-2019 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 //
  26 // ISO C++ 14882: 22.2.4.1.2  collate virtual functions
  27 //
  28
  29 // Written by Benjamin Kosnik <bkoz@redhat.com>
  30 // Modified for DragonFly by John Marino <gnugcc@marino.st>
  31
  32 #include <locale>
  33 #include <cstring>
  34
  35 namespace std _GLIBCXX_VISIBILITY(default)
  36 {
  37 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  38
  39   // These are basically extensions to char_traits, and perhaps should
  40   // be put there instead of here.
  41   template<>
  42     int
  43     collate<char>::_M_compare(const char* __one,
  44                               const char* __two) const throw()
  45     {
  46       int __cmp = strcoll_l(__one, __two, (locale_t)_M_c_locale_collate);
  47       return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0);
  48     }
  49
  50   template<>
  51     size_t
  52     collate<char>::_M_transform(char* __to, const char* __from,
  53                                 size_t __n) const throw()
  54     { return strxfrm_l(__to, __from, __n, (locale_t)_M_c_locale_collate); }
  55
  56 #ifdef _GLIBCXX_USE_WCHAR_T
  57   template<>
  58     int
  59     collate<wchar_t>::_M_compare(const wchar_t* __one,
  60                                  const wchar_t* __two) const throw()
  61     {
  62       int __cmp = wcscoll_l(__one, __two, (locale_t)_M_c_locale_collate);
  63       return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0);
  64     }
  65
  66   template<>
  67     size_t
  68     collate<wchar_t>::_M_transform(wchar_t* __to, const wchar_t* __from,
  69                                    size_t __n) const throw()
  70     { return wcsxfrm_l(__to, __from, __n, (locale_t)_M_c_locale_collate); }
  71 #endif
  72
  73 _GLIBCXX_END_NAMESPACE_VERSION
  74 } // namespace