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1 | // Wrapper for underlying C-language localization -*- C++ -*- |
2 | ||
a945c346 | 3 | // Copyright (C) 2001-2024 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) |
0214010c BK |
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 | |
748086b7 JJ |
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 | |
3d50dede JW |
64 | #if defined _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT \ |
65 | && defined __LONG_DOUBLE_IEEE128__ | |
66 | namespace __gnu_cxx_ieee128 { | |
67 | #endif | |
68 | ||
964c5329 PC |
69 | // Convert numeric value of type double and long double to string and |
70 | // return length of string. If vsnprintf is available use it, otherwise | |
71 | // fall back to the unsafe vsprintf which, in general, can be dangerous | |
72 | // and should be avoided. | |
73 | inline int | |
74 | __convert_from_v(const __c_locale& __cloc __attribute__ ((__unused__)), | |
75 | char* __out, | |
76 | const int __size __attribute__ ((__unused__)), | |
77 | const char* __fmt, ...) | |
78 | { | |
714e9334 | 79 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
964c5329 | 80 | __c_locale __old = __gnu_cxx::__uselocale(__cloc); |
14516325 | 81 | #else |
445877a9 PC |
82 | char* __old = std::setlocale(LC_NUMERIC, 0); |
83 | char* __sav = 0; | |
f697c80d PC |
84 | if (__builtin_strcmp(__old, "C")) |
85 | { | |
86 | const size_t __len = __builtin_strlen(__old) + 1; | |
aaee3e89 | 87 | __sav = new char[__len]; |
f697c80d PC |
88 | __builtin_memcpy(__sav, __old, __len); |
89 | std::setlocale(LC_NUMERIC, "C"); | |
90 | } | |
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91 | #endif |
92 | ||
32c8d4b1 PC |
93 | __builtin_va_list __args; |
94 | __builtin_va_start(__args, __fmt); | |
964c5329 | 95 | |
23c64853 | 96 | #if _GLIBCXX_USE_C99_STDIO |
99408976 | 97 | const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); |
14516325 | 98 | #else |
99408976 | 99 | const int __ret = __builtin_vsprintf(__out, __fmt, __args); |
14516325 BK |
100 | #endif |
101 | ||
32c8d4b1 | 102 | __builtin_va_end(__args); |
964c5329 | 103 | |
14516325 | 104 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
964c5329 | 105 | __gnu_cxx::__uselocale(__old); |
14516325 | 106 | #else |
f697c80d PC |
107 | if (__sav) |
108 | { | |
109 | std::setlocale(LC_NUMERIC, __sav); | |
110 | delete [] __sav; | |
111 | } | |
14516325 | 112 | #endif |
964c5329 PC |
113 | return __ret; |
114 | } | |
3cbc7af0 | 115 | |
3d50dede JW |
116 | #if defined _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT \ |
117 | && defined __LONG_DOUBLE_IEEE128__ | |
118 | } // namespace __gnu_cxx_ieee128 | |
119 | #endif | |
120 | ||
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121 | _GLIBCXX_END_NAMESPACE_VERSION |
122 | } // namespace | |
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123 | |
124 | #endif |