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1 | // std::collate implementation details, generic version -*- C++ -*- |
2 | ||
748086b7 | 3 | // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 |
538075fe | 4 | // Free Software Foundation, Inc. |
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5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
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10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
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17 | // Under Section 7 of GPL version 3, you are granted additional |
18 | // permissions described in the GCC Runtime Library Exception, version | |
19 | // 3.1, as published by the Free Software Foundation. | |
ea0c0b6e | 20 | |
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21 | // You should have received a copy of the GNU General Public License and |
22 | // a copy of the GCC Runtime Library Exception along with this program; | |
23 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | // <http://www.gnu.org/licenses/>. | |
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25 | |
26 | // | |
27 | // ISO C++ 14882: 22.2.4.1.2 collate virtual functions | |
28 | // | |
29 | ||
30 | // Written by Benjamin Kosnik <bkoz@redhat.com> | |
31 | ||
32 | #include <locale> | |
538075fe | 33 | #include <cstring> |
ea0c0b6e | 34 | |
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35 | _GLIBCXX_BEGIN_NAMESPACE(std) |
36 | ||
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37 | // These are basically extensions to char_traits, and perhaps should |
38 | // be put there instead of here. | |
39 | template<> | |
40 | int | |
d3a193e3 | 41 | collate<char>::_M_compare(const char* __one, const char* __two) const |
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42 | { |
43 | int __cmp = strcoll(__one, __two); | |
44 | return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); | |
45 | } | |
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46 | |
47 | template<> | |
48 | size_t | |
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49 | collate<char>::_M_transform(char* __to, const char* __from, |
50 | size_t __n) const | |
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51 | { return strxfrm(__to, __from, __n); } |
52 | ||
3d7c150e | 53 | #ifdef _GLIBCXX_USE_WCHAR_T |
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54 | template<> |
55 | int | |
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56 | collate<wchar_t>::_M_compare(const wchar_t* __one, |
57 | const wchar_t* __two) const | |
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58 | { |
59 | int __cmp = wcscoll(__one, __two); | |
60 | return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0); | |
61 | } | |
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62 | |
63 | template<> | |
64 | size_t | |
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65 | collate<wchar_t>::_M_transform(wchar_t* __to, const wchar_t* __from, |
66 | size_t __n) const | |
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67 | { return wcsxfrm(__to, __from, __n); } |
68 | #endif | |
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69 | |
70 | _GLIBCXX_END_NAMESPACE |