1 // localization implementation details, DragonFly version -*- C++ -*- 2 3 // Copyright (C) 2001-2020 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 // Modified for DragonFly by John Marino <gnugcc@marino.st> 36 // Modified for NetBSD by Christos Zoulas <christos@zoulas.com> and 37 // matthew green <mrg@eterna.com.au> 38 39 #ifndef _GLIBCXX_CXX_LOCALE_H 40 #define _GLIBCXX_CXX_LOCALE_H 1 41 42 #pragma GCC system_header 43 44 #include <clocale> 45 #ifndef __NetBSD__ 46 #include <xlocale.h> 47 #else 48 #include <cstdio> 49 #endif 50 51 #define _GLIBCXX_NUM_CATEGORIES 0 52 53 namespace std _GLIBCXX_VISIBILITY(default) 54 { 55 _GLIBCXX_BEGIN_NAMESPACE_VERSION 56 57 typedef int* __c_locale; 58 59 #ifndef __NetBSD__ 60 // Convert numeric value of type double and long double to string and 61 // return length of string. If vsnprintf is available use it, otherwise 62 // fall back to the unsafe vsprintf which, in general, can be dangerous 63 // and should be avoided. 64 inline int 65 __convert_from_v(const __c_locale& __cloc, char* __out, 66 const int __size __attribute__ ((__unused__)), 67 const char* __fmt, ...) 68 { 69 __c_locale __old = (__c_locale)uselocale((locale_t)__cloc); 70 71 __builtin_va_list __args; 72 __builtin_va_start(__args, __fmt); 73 74 #if _GLIBCXX_USE_C99_STDIO 75 const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); 76 #else 77 const int __ret = __builtin_vsprintf(__out, __fmt, __args); 78 #endif 79 80 __builtin_va_end(__args); 81 82 uselocale((locale_t)__old); 83 return __ret; 84 } 85 #else 86 // NetBSD backend requires vasprintf_l() which may not be visible in 87 // all complation environments (eg, _XOPEN_SOURCE=600) so the backend 88 // lives in the library code, instead of this header. 89 int 90 __convert_from_v(const __c_locale& __cloc, char* __out, 91 const int __size __attribute__ ((__unused__)), 92 const char* __fmt, ...); 93 #endif 94 95 _GLIBCXX_END_NAMESPACE_VERSION 96 } // namespace 97 98 #endif 99