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e3e68d56 | 1 | // std::collate implementation details, generic version -*- C++ -*- |
2 | ||
fbd26352 | 3 | // Copyright (C) 2001-2019 Free Software Foundation, Inc. |
e3e68d56 | 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 | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
e3e68d56 | 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 | ||
6bc9506f | 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. | |
e3e68d56 | 19 | |
6bc9506f | 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/>. | |
e3e68d56 | 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 | ||
31 | #include <locale> | |
c7599825 | 32 | #include <cstring> |
e3e68d56 | 33 | |
2948dd21 | 34 | namespace std _GLIBCXX_VISIBILITY(default) |
35 | { | |
36 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
1069247d | 37 | |
e3e68d56 | 38 | // These are basically extensions to char_traits, and perhaps should |
39 | // be put there instead of here. | |
40 | template<> | |
33b7ef52 | 41 | int |
42 | collate<char>::_M_compare(const char* __one, | |
6261db62 | 43 | const char* __two) const throw() |
33b7ef52 | 44 | { |
4ce1020f | 45 | int __cmp = strcoll(__one, __two); |
46 | return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); | |
47 | } | |
33b7ef52 | 48 | |
e3e68d56 | 49 | template<> |
50 | size_t | |
33b7ef52 | 51 | collate<char>::_M_transform(char* __to, const char* __from, |
6261db62 | 52 | size_t __n) const throw() |
e3e68d56 | 53 | { return strxfrm(__to, __from, __n); } |
54 | ||
5a64d8cf | 55 | #ifdef _GLIBCXX_USE_WCHAR_T |
e3e68d56 | 56 | template<> |
33b7ef52 | 57 | int |
58 | collate<wchar_t>::_M_compare(const wchar_t* __one, | |
6261db62 | 59 | const wchar_t* __two) const throw() |
4ce1020f | 60 | { |
61 | int __cmp = wcscoll(__one, __two); | |
62 | return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); | |
63 | } | |
33b7ef52 | 64 | |
e3e68d56 | 65 | template<> |
66 | size_t | |
5f8a31fe | 67 | collate<wchar_t>::_M_transform(wchar_t* __to, const wchar_t* __from, |
6261db62 | 68 | size_t __n) const throw() |
e3e68d56 | 69 | { return wcsxfrm(__to, __from, __n); } |
70 | #endif | |
1069247d | 71 | |
2948dd21 | 72 | _GLIBCXX_END_NAMESPACE_VERSION |
73 | } // namespace |