libstdc++-v3/config/locale/dragonfly/c_locale.h

   1 // localization implementation details, DragonFly version -*- C++ -*-
   2
   3 // Copyright (C) 2001-2023 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
  37 #ifndef _GLIBCXX_CXX_LOCALE_H
  38 #define _GLIBCXX_CXX_LOCALE_H 1
  39
  40 #pragma GCC system_header
  41
  42 #include <clocale>
  43 #include <xlocale.h>
  44
  45 #define _GLIBCXX_NUM_CATEGORIES 0
  46
  47 namespace std _GLIBCXX_VISIBILITY(default)
  48 {
  49 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  50
  51   typedef int*                  __c_locale;
  52
  53   // Convert numeric value of type double and long double to string and
  54   // return length of string.  If vsnprintf is available use it, otherwise
  55   // fall back to the unsafe vsprintf which, in general, can be dangerous
  56   // and should be avoided.
  57   inline int
  58   __convert_from_v(const __c_locale& __cloc, char* __out,
  59                    const int __size __attribute__ ((__unused__)),
  60                    const char* __fmt, ...)
  61   {
  62     __c_locale __old = (__c_locale)uselocale((locale_t)__cloc);
  63
  64     __builtin_va_list __args;
  65     __builtin_va_start(__args, __fmt);
  66
  67 #if _GLIBCXX_USE_C99_STDIO
  68     const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
  69 #else
  70     const int __ret = __builtin_vsprintf(__out, __fmt, __args);
  71 #endif
  72
  73     __builtin_va_end(__args);
  74
  75     uselocale((locale_t)__old);
  76     return __ret;
  77   }
  78
  79 _GLIBCXX_END_NAMESPACE_VERSION
  80 } // namespace
  81
  82 #endif