| // Wrapper for underlying C-language localization -*- C++ -*- |
| |
| // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 |
| // Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file c++locale.h |
| * This is an internal header file, included by other library headers. |
| * You should not attempt to use it directly. |
| */ |
| |
| // |
| // ISO C++ 14882: 22.8 Standard locale categories. |
| // |
| |
| // Written by Benjamin Kosnik <bkoz@redhat.com> |
| |
| #ifndef _GLIBCXX_CXX_LOCALE_H |
| #define _GLIBCXX_CXX_LOCALE_H 1 |
| |
| #pragma GCC system_header |
| |
| #include <clocale> |
| #include <cstddef> |
| |
| #define _GLIBCXX_C_LOCALE_GNU 1 |
| |
| #define _GLIBCXX_NUM_CATEGORIES 6 |
| |
| #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
| _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) |
| |
| extern "C" __typeof(uselocale) __uselocale; |
| |
| _GLIBCXX_END_NAMESPACE |
| #endif |
| |
| _GLIBCXX_BEGIN_NAMESPACE(std) |
| |
| typedef __locale_t __c_locale; |
| |
| // Convert numeric value of type double and long double to string and |
| // return length of string. If vsnprintf is available use it, otherwise |
| // fall back to the unsafe vsprintf which, in general, can be dangerous |
| // and should be avoided. |
| inline int |
| __convert_from_v(const __c_locale& __cloc __attribute__ ((__unused__)), |
| char* __out, |
| const int __size __attribute__ ((__unused__)), |
| const char* __fmt, ...) |
| { |
| #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
| __c_locale __old = __gnu_cxx::__uselocale(__cloc); |
| #else |
| char* __old = std::setlocale(LC_NUMERIC, NULL); |
| char* __sav = NULL; |
| if (__builtin_strcmp(__old, "C")) |
| { |
| const size_t __len = __builtin_strlen(__old) + 1; |
| __sav = new char[__len]; |
| __builtin_memcpy(__sav, __old, __len); |
| std::setlocale(LC_NUMERIC, "C"); |
| } |
| #endif |
| |
| __builtin_va_list __args; |
| __builtin_va_start(__args, __fmt); |
| |
| #ifdef _GLIBCXX_USE_C99 |
| const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); |
| #else |
| const int __ret = __builtin_vsprintf(__out, __fmt, __args); |
| #endif |
| |
| __builtin_va_end(__args); |
| |
| #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) |
| __gnu_cxx::__uselocale(__old); |
| #else |
| if (__sav) |
| { |
| std::setlocale(LC_NUMERIC, __sav); |
| delete [] __sav; |
| } |
| #endif |
| return __ret; |
| } |
| |
| _GLIBCXX_END_NAMESPACE |
| |
| #endif |