1 // Wrapper for underlying C-language localization -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // Under Section 7 of GPL version 3, you are granted additional
18 // permissions described in the GCC Runtime Library Exception, version
19 // 3.1, as published by the Free Software Foundation.
21 // You should have received a copy of the GNU General Public License and
22 // a copy of the GCC Runtime Library Exception along with this program;
23 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 // <http://www.gnu.org/licenses/>.
26 /** @file bits/c++locale.h
27 * This is an internal header file, included by other library headers.
28 * Do not attempt to use it directly. @headername{locale}
32 // ISO C++ 14882: 22.8 Standard locale categories.
35 // Written by Benjamin Kosnik <bkoz@redhat.com>
37 #ifndef _GLIBCXX_CXX_LOCALE_H
38 #define _GLIBCXX_CXX_LOCALE_H 1
40 #pragma GCC system_header
44 #define _GLIBCXX_C_LOCALE_GNU 1
46 #define _GLIBCXX_NUM_CATEGORIES 6
48 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
49 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
51 _GLIBCXX_BEGIN_NAMESPACE_VERSION
53 extern "C" __typeof(uselocale) __uselocale;
55 _GLIBCXX_END_NAMESPACE_VERSION
59 namespace std _GLIBCXX_VISIBILITY(default)
61 _GLIBCXX_BEGIN_NAMESPACE_VERSION
63 typedef __locale_t __c_locale;
65 // Convert numeric value of type double and long double to string and
66 // return length of string. If vsnprintf is available use it, otherwise
67 // fall back to the unsafe vsprintf which, in general, can be dangerous
68 // and should be avoided.
70 __convert_from_v(const __c_locale& __cloc __attribute__ ((__unused__)),
72 const int __size __attribute__ ((__unused__)),
73 const char* __fmt, ...)
75 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
76 __c_locale __old = __gnu_cxx::__uselocale(__cloc);
78 char* __old = std::setlocale(LC_NUMERIC, 0);
80 if (__builtin_strcmp(__old, "C"))
82 const size_t __len = __builtin_strlen(__old) + 1;
83 __sav = new char[__len];
84 __builtin_memcpy(__sav, __old, __len);
85 std::setlocale(LC_NUMERIC, "C");
89 __builtin_va_list __args;
90 __builtin_va_start(__args, __fmt);
92 #ifdef _GLIBCXX_USE_C99
93 const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
95 const int __ret = __builtin_vsprintf(__out, __fmt, __args);
98 __builtin_va_end(__args);
100 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
101 __gnu_cxx::__uselocale(__old);
105 std::setlocale(LC_NUMERIC, __sav);
112 _GLIBCXX_END_NAMESPACE_VERSION