text: // Wrapper for underlying C-language localization -*- C++ -*-
  
  // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
  // 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 2, 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.
  
  // You should have received a copy of the GNU General Public License along
  // with this library; see the file COPYING.  If not, write to the Free
  // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  // USA.
  
  // As a special exception, you may use this file as part of a free software
  // library without restriction.  Specifically, if other files instantiate
  // templates or use macros or inline functions from this file, or you compile
  // this file and link it with other files to produce an executable, this
  // file does not by itself cause the resulting executable to be covered by
  // the GNU General Public License.  This exception does not however
  // invalidate any other reasons why the executable file might be covered by
  // the GNU General Public License.
  
  /** @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 _C_LOCALE_H
  #define _C_LOCALE_H 1
  
  #pragma GCC system_header
  
  #include <clocale>
  #include <cstring>   // get std::strlen
  #include <cstdio>    // get std::vsnprintf or std::vsprintf
  #include <cstdarg>
  
  #define _GLIBCXX_NUM_CATEGORIES 0
  
  _GLIBCXX_BEGIN_NAMESPACE(std)
  
    typedef int*			__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&, char* __out, 
  		   const int __size __attribute__((__unused__)),
  		   const char* __fmt, ...)
    {
      char* __old = std::setlocale(LC_NUMERIC, NULL);
      char* __sav = NULL;
      if (std::strcmp(__old, "C"))
        {
  	__sav = new char[std::strlen(__old) + 1];
  	std::strcpy(__sav, __old);
  	std::setlocale(LC_NUMERIC, "C");
        }
  
      va_list __args;
      va_start(__args, __fmt);
  
  #ifdef _GLIBCXX_USE_C99
      const int __ret = std::vsnprintf(__out, __size, __fmt, __args);
  #else
      const int __ret = std::vsprintf(__out, __fmt, __args);
  #endif
  
      va_end(__args);
        
      if (__sav)
        {
  	std::setlocale(LC_NUMERIC, __sav);
  	delete [] __sav;
        }
      return __ret;
    }
  
  _GLIBCXX_END_NAMESPACE
  
  #endif
  