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// Wrapper for underlying C-language localization -*- C++ -*-

// Copyright (C) 2001, 2002, 2003, 2004 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.

//

// 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::snprintf or std::sprintf

#define _GLIBCXX_NUM_CATEGORIES 0

namespace std

{

  typedef int*                  __c_locale;

  // Convert numeric value of type _Tv to string and return length of

  // string.  If snprintf is available use it, otherwise fall back to

  // the unsafe sprintf which, in general, can be dangerous and should

  // be avoided.

  template<typename _Tv>

    int

    __convert_from_v(char* __out,

                     const int __size __attribute__((__unused__)),

                     const char* __fmt,

                     _Tv __v, const __c_locale&, int __prec)

    {

      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");

        }

#ifdef _GLIBCXX_USE_C99

      const int __ret = std::snprintf(__out, __size, __fmt, __prec, __v);

#else

      const int __ret = std::sprintf(__out, __fmt, __prec, __v);

#endif

      if (__sav)

        {

          std::setlocale(LC_NUMERIC, __sav);

          delete [] __sav;

        }

      return __ret;

    }

}

#endif