| 1 |
// Wrapper for underlying C-language localization -*- C++ -*- |
| 2 |
|
| 3 |
// Copyright (C) 2001-2021 Free Software Foundation, Inc. |
| 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 |
| 8 |
// Free Software Foundation; either version 3, or (at your option) |
| 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 |
|
| 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/>. |
| 24 |
|
| 25 |
/** @file bits/c++locale.h |
| 26 |
* This is an internal header file, included by other library headers. |
| 27 |
* Do not attempt to use it directly. @headername{locale} |
| 28 |
*/ |
| 29 |
|
| 30 |
// |
| 31 |
// ISO C++ 14882: 22.8 Standard locale categories. |
| 32 |
// |
| 33 |
|
| 34 |
// Written by Benjamin Kosnik <bkoz@redhat.com> |
| 35 |
|
| 36 |
#ifndef _GLIBCXX_CXX_LOCALE_H |
| 37 |
#define _GLIBCXX_CXX_LOCALE_H 1 |
| 38 |
|
| 39 |
#pragma GCC system_header |
| 40 |
|
| 41 |
#include <clocale> |
| 42 |
|
| 43 |
#define _GLIBCXX_NUM_CATEGORIES 0 |
| 44 |
|
| 45 |
namespace std _GLIBCXX_VISIBILITY(default) |
| 46 |
{ |
| 47 |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 48 |
|
| 49 |
typedef int* __c_locale; |
| 50 |
|
| 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 |
| 56 |
__convert_from_v(const __c_locale&, char* __out, |
| 57 |
const int __size __attribute__((__unused__)), |
| 58 |
const char* __fmt, ...) |
| 59 |
{ |
| 60 |
char* __old = std::setlocale(LC_NUMERIC, 0); |
| 61 |
char* __sav = 0; |
| 62 |
if (__builtin_strcmp(__old, "C")) |
| 63 |
{ |
| 64 |
const size_t __len = __builtin_strlen(__old) + 1; |
| 65 |
__sav = new char[__len]; |
| 66 |
__builtin_memcpy(__sav, __old, __len); |
| 67 |
std::setlocale(LC_NUMERIC, "C"); |
| 68 |
} |
| 69 |
|
| 70 |
__builtin_va_list __args; |
| 71 |
__builtin_va_start(__args, __fmt); |
| 72 |
|
| 73 |
#if _GLIBCXX_USE_C99_STDIO && !_GLIBCXX_HAVE_BROKEN_VSNPRINTF |
| 74 |
const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); |
| 75 |
#else |
| 76 |
const int __ret = __builtin_vsprintf(__out, __fmt, __args); |
| 77 |
#endif |
| 78 |
|
| 79 |
__builtin_va_end(__args); |
| 80 |
|
| 81 |
if (__sav) |
| 82 |
{ |
| 83 |
std::setlocale(LC_NUMERIC, __sav); |
| 84 |
delete [] __sav; |
| 85 |
} |
| 86 |
return __ret; |
| 87 |
} |
| 88 |
|
| 89 |
_GLIBCXX_END_NAMESPACE_VERSION |
| 90 |
} // namespace |
| 91 |
|
| 92 |
#endif |
