1 // std::collate implementation details, DragonFly version -*- C++ -*- 2 3 // Copyright (C) 2015-2018 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 75