1// localization implementation details, DragonFly version -*- C++ -*- 2 3// Copyright (C) 2001-2022 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#endif 48 49#define _GLIBCXX_NUM_CATEGORIES 0 50 51namespace std _GLIBCXX_VISIBILITY(default) 52{ 53_GLIBCXX_BEGIN_NAMESPACE_VERSION 54 55 typedef int* __c_locale; 56 57#ifndef __NetBSD__ 58 // Convert numeric value of type double and long double to string and 59 // return length of string. If vsnprintf is available use it, otherwise 60 // fall back to the unsafe vsprintf which, in general, can be dangerous 61 // and should be avoided. 62 inline int 63 __convert_from_v(const __c_locale& __cloc, char* __out, 64 const int __size __attribute__ ((__unused__)), 65 const char* __fmt, ...) 66 { 67 __c_locale __old = (__c_locale)uselocale((locale_t)__cloc); 68 69 __builtin_va_list __args; 70 __builtin_va_start(__args, __fmt); 71 72#if _GLIBCXX_USE_C99_STDIO 73 const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args); 74#else 75 const int __ret = __builtin_vsprintf(__out, __fmt, __args); 76#endif 77 78 __builtin_va_end(__args); 79 80 uselocale((locale_t)__old); 81 return __ret; 82 } 83#else 84 // NetBSD backend requires vasprintf_l() which may not be visible in 85 // all complation environments (eg, _XOPEN_SOURCE=600) so the backend 86 // lives in the library code, instead of this header. 87 int 88 __convert_from_v(const __c_locale& __cloc, char* __out, 89 const int __size __attribute__ ((__unused__)), 90 const char* __fmt, ...); 91#endif 92 93_GLIBCXX_END_NAMESPACE_VERSION 94} // namespace 95 96#endif 97