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

// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009

// 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 3, 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.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

/** @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 _GLIBCXX_CXX_LOCALE_H

#define _GLIBCXX_CXX_LOCALE_H 1

#pragma GCC system_header

#include <clocale>

#include <cstddef>

#define _GLIBCXX_C_LOCALE_GNU 1

#define _GLIBCXX_NUM_CATEGORIES 6

#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)

_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)

  extern "C" __typeof(uselocale) __uselocale;

_GLIBCXX_END_NAMESPACE

#endif

_GLIBCXX_BEGIN_NAMESPACE(std)

  typedef __locale_t            __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& __cloc __attribute__ ((__unused__)),

                   char* __out,

                   const int __size __attribute__ ((__unused__)),

                   const char* __fmt, ...)

  {

#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)

    __c_locale __old = __gnu_cxx::__uselocale(__cloc);

#else

    char* __old = std::setlocale(LC_NUMERIC, NULL);

    char* __sav = NULL;

    if (__builtin_strcmp(__old, "C"))

      {

        const size_t __len = __builtin_strlen(__old) + 1;

        __sav = new char[__len];

        __builtin_memcpy(__sav, __old, __len);

        std::setlocale(LC_NUMERIC, "C");

      }

#endif

    __builtin_va_list __args;

    __builtin_va_start(__args, __fmt);

#ifdef _GLIBCXX_USE_C99

    const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);

#else

    const int __ret = __builtin_vsprintf(__out, __fmt, __args);

#endif

    __builtin_va_end(__args);

#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)

    __gnu_cxx::__uselocale(__old);

#else

    if (__sav)

      {

        std::setlocale(LC_NUMERIC, __sav);

        delete [] __sav;

      }

#endif

    return __ret;

  }

_GLIBCXX_END_NAMESPACE

#endif