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1 | // Wrapper for underlying C-language localization -*- C++ -*- |
2 | ||
8d9254fc | 3 | // Copyright (C) 2001-2020 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. | |
0214010c | 19 | |
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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_C_LOCALE_GNU 1 |
9e5c7dba | 44 | |
3d7c150e | 45 | #define _GLIBCXX_NUM_CATEGORIES 6 |
aa53f832 | 46 | |
714e9334 | 47 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
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48 | namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) |
49 | { | |
50 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
3cbc7af0 | 51 | |
714e9334 | 52 | extern "C" __typeof(uselocale) __uselocale; |
3cbc7af0 | 53 | |
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54 | _GLIBCXX_END_NAMESPACE_VERSION |
55 | } // namespace | |
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56 | #endif |
57 | ||
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58 | namespace std _GLIBCXX_VISIBILITY(default) |
59 | { | |
60 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
3cbc7af0 | 61 | |
0214010c | 62 | typedef __locale_t __c_locale; |
14516325 | 63 | |
964c5329 PC |
64 | // Convert numeric value of type double and long double to string and |
65 | // return length of string. If vsnprintf is available use it, otherwise | |
66 | // fall back to the unsafe vsprintf which, in general, can be dangerous | |
67 | // and should be avoided. | |
68 | inline int | |
69 | __convert_from_v(const __c_locale& __cloc __attribute__ ((__unused__)), | |
70 | char* __out, | |
71 | const int __size __attribute__ ((__unused__)), | |
72 | const char* __fmt, ...) | |
73 | { | |
714e9334 | 74 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
964c5329 | 75 | __c_locale __old = __gnu_cxx::__uselocale(__cloc); |
14516325 | 76 | #else |
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77 | char* __old = std::setlocale(LC_NUMERIC, 0); |
78 | char* __sav = 0; | |
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79 | if (__builtin_strcmp(__old, "C")) |
80 | { | |
81 | const size_t __len = __builtin_strlen(__old) + 1; | |
aaee3e89 | 82 | __sav = new char[__len]; |
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83 | __builtin_memcpy(__sav, __old, __len); |
84 | std::setlocale(LC_NUMERIC, "C"); | |
85 | } | |
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86 | #endif |
87 | ||
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88 | __builtin_va_list __args; |
89 | __builtin_va_start(__args, __fmt); | |
964c5329 | 90 | |
23c64853 | 91 | #if _GLIBCXX_USE_C99_STDIO |
99408976 | 92 | const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); |
14516325 | 93 | #else |
99408976 | 94 | const int __ret = __builtin_vsprintf(__out, __fmt, __args); |
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95 | #endif |
96 | ||
32c8d4b1 | 97 | __builtin_va_end(__args); |
964c5329 | 98 | |
14516325 | 99 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
964c5329 | 100 | __gnu_cxx::__uselocale(__old); |
14516325 | 101 | #else |
f697c80d PC |
102 | if (__sav) |
103 | { | |
104 | std::setlocale(LC_NUMERIC, __sav); | |
105 | delete [] __sav; | |
106 | } | |
14516325 | 107 | #endif |
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108 | return __ret; |
109 | } | |
3cbc7af0 | 110 | |
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111 | _GLIBCXX_END_NAMESPACE_VERSION |
112 | } // namespace | |
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113 | |
114 | #endif |