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1 | // Wrapper for underlying C-language localization -*- C++ -*- |
2 | ||
7adcbafe | 3 | // Copyright (C) 2001-2022 Free Software Foundation, Inc. |
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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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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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 | ||
748086b7 JJ |
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/>. | |
0214010c | 24 | |
f910786b | 25 | /** @file bits/c++locale.h |
143c27b0 | 26 | * This is an internal header file, included by other library headers. |
f910786b | 27 | * Do not attempt to use it directly. @headername{locale} |
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28 | */ |
29 | ||
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30 | // |
31 | // ISO C++ 14882: 22.8 Standard locale categories. | |
32 | // | |
33 | ||
34 | // Written by Benjamin Kosnik <bkoz@redhat.com> | |
35 | ||
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36 | #ifndef _GLIBCXX_CXX_LOCALE_H |
37 | #define _GLIBCXX_CXX_LOCALE_H 1 | |
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38 | |
39 | #pragma GCC system_header | |
40 | ||
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41 | #include <clocale> |
42 | ||
3d7c150e | 43 | #define _GLIBCXX_NUM_CATEGORIES 0 |
aa53f832 | 44 | |
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45 | namespace std _GLIBCXX_VISIBILITY(default) |
46 | { | |
47 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
3cbc7af0 | 48 | |
0214010c | 49 | typedef int* __c_locale; |
14516325 | 50 | |
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51 | // Convert numeric value of type double and long double to string and |
52 | // return length of string. If vsnprintf is available use it, otherwise | |
53 | // fall back to the unsafe vsprintf which, in general, can be dangerous | |
54 | // and should be avoided. | |
55 | inline int | |
f92ab29f | 56 | __convert_from_v(const __c_locale&, char* __out, |
964c5329 PC |
57 | const int __size __attribute__((__unused__)), |
58 | const char* __fmt, ...) | |
59 | { | |
445877a9 PC |
60 | char* __old = std::setlocale(LC_NUMERIC, 0); |
61 | char* __sav = 0; | |
538075fe | 62 | if (__builtin_strcmp(__old, "C")) |
964c5329 | 63 | { |
538075fe PC |
64 | const size_t __len = __builtin_strlen(__old) + 1; |
65 | __sav = new char[__len]; | |
66 | __builtin_memcpy(__sav, __old, __len); | |
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67 | std::setlocale(LC_NUMERIC, "C"); |
68 | } | |
69 | ||
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70 | __builtin_va_list __args; |
71 | __builtin_va_start(__args, __fmt); | |
714e9334 | 72 | |
c98f2551 | 73 | #if _GLIBCXX_USE_C99_STDIO && !_GLIBCXX_HAVE_BROKEN_VSNPRINTF |
99408976 | 74 | const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); |
14516325 | 75 | #else |
99408976 | 76 | const int __ret = __builtin_vsprintf(__out, __fmt, __args); |
14516325 | 77 | #endif |
964c5329 | 78 | |
32c8d4b1 PC |
79 | __builtin_va_end(__args); |
80 | ||
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81 | if (__sav) |
82 | { | |
83 | std::setlocale(LC_NUMERIC, __sav); | |
84 | delete [] __sav; | |
85 | } | |
86 | return __ret; | |
87 | } | |
3cbc7af0 | 88 | |
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89 | _GLIBCXX_END_NAMESPACE_VERSION |
90 | } // namespace | |
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91 | |
92 | #endif |