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

// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

// 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/>.

//

// ISO C++ 14882: 22.8  Standard locale categories.

//

// Written by Benjamin Kosnik <bkoz@redhat.com>

#include <cerrno>  // For errno

#include <cmath>  // For isinf, finite, finitef, fabs

#include <cstdlib>  // For strof, strtold

#include <cstring>

#include <cstdio>

#include <locale>

#include <limits>

#include <cstddef>

#ifdef _GLIBCXX_HAVE_IEEEFP_H

#include <ieeefp.h>

#endif

_GLIBCXX_BEGIN_NAMESPACE(std)

  template<>

    void

    __convert_to_v(const char* __s, float& __v, ios_base::iostate& __err,

                   const __c_locale&) throw()

    {

      // Assumes __s formatted for "C" locale.

      char* __old = setlocale(LC_ALL, NULL);

      const size_t __len = strlen(__old) + 1;

      char* __sav = new char[__len];

      memcpy(__sav, __old, __len);

      setlocale(LC_ALL, "C");

      char* __sanity;

      bool __overflow = false;

#if !__FLT_HAS_INFINITY__

      errno = 0;

#endif

#ifdef _GLIBCXX_HAVE_STRTOF

      __v = strtof(__s, &__sanity);

#else

      double __d = strtod(__s, &__sanity);

      __v = static_cast<float>(__d);

#ifdef _GLIBCXX_HAVE_FINITEF

      if (!finitef (__v))

        __overflow = true;

#elif defined (_GLIBCXX_HAVE_FINITE)

      if (!finite (static_cast<double> (__v)))

        __overflow = true;

#elif defined (_GLIBCXX_HAVE_ISINF)

      if (isinf (static_cast<double> (__v)))

        __overflow = true;

#else

      if (fabs(__d) > numeric_limits<float>::max())

        __overflow = true;

#endif

#endif // _GLIBCXX_HAVE_STRTOF

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 23. Num_get overflow result.

      if (__sanity == __s || *__sanity != '\0')

        {

          __v = 0.0f;

          __err = ios_base::failbit;

        }

      else if (__overflow

#if __FLT_HAS_INFINITY__

               || __v == numeric_limits<float>::infinity()

               || __v == -numeric_limits<float>::infinity()

#else

               || ((__v > 1.0f || __v < -1.0f) && errno == ERANGE)

#endif

              )

        {

          if (__v > 0.0f)

            __v = numeric_limits<float>::max();

          else

            __v = -numeric_limits<float>::max();

          __err = ios_base::failbit;

        }

      setlocale(LC_ALL, __sav);

      delete [] __sav;

    }

  template<>

    void

    __convert_to_v(const char* __s, double& __v, ios_base::iostate& __err,

                   const __c_locale&) throw()

    {

      // Assumes __s formatted for "C" locale.

      char* __old = setlocale(LC_ALL, NULL);

      const size_t __len = strlen(__old) + 1;

      char* __sav = new char[__len];

      memcpy(__sav, __old, __len);

      setlocale(LC_ALL, "C");

      char* __sanity;

#if !__DBL_HAS_INFINITY__

      errno = 0;

#endif

      __v = strtod(__s, &__sanity);

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 23. Num_get overflow result.

      if (__sanity == __s || *__sanity != '\0')

        {

          __v = 0.0;

          __err = ios_base::failbit;

        }

      else if (

#if __DBL_HAS_INFINITY__

               __v == numeric_limits<double>::infinity()

               || __v == -numeric_limits<double>::infinity())

#else

               (__v > 1.0 || __v < -1.0) && errno == ERANGE)

#endif

        {

          if (__v > 0.0)

            __v = numeric_limits<double>::max();

          else

            __v = -numeric_limits<double>::max();

          __err = ios_base::failbit;

        }

      setlocale(LC_ALL, __sav);

      delete [] __sav;

    }

  template<>

    void

    __convert_to_v(const char* __s, long double& __v,

                   ios_base::iostate& __err, const __c_locale&) throw()

    {

      // Assumes __s formatted for "C" locale.

      char* __old = setlocale(LC_ALL, NULL);

      const size_t __len = strlen(__old) + 1;

      char* __sav = new char[__len];

      memcpy(__sav, __old, __len);

      setlocale(LC_ALL, "C");

#if !__LDBL_HAS_INFINITY__

      errno = 0;

#endif

#if defined(_GLIBCXX_HAVE_STRTOLD) && !defined(_GLIBCXX_HAVE_BROKEN_STRTOLD)

      char* __sanity;

      __v = strtold(__s, &__sanity);

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 23. Num_get overflow result.

      if (__sanity == __s || *__sanity != '\0')

#else

      typedef char_traits<char>::int_type int_type;

      int __p = sscanf(__s, "%Lf", &__v);

      if (!__p || static_cast<int_type>(__p) == char_traits<char>::eof())

#endif

        {

          __v = 0.0l;

          __err = ios_base::failbit;

        }

       else if (

#if __LDBL_HAS_INFINITY__

                __v == numeric_limits<long double>::infinity()

                || __v == -numeric_limits<long double>::infinity())

#else

                (__v > 1.0l || __v < -1.0l) && errno == ERANGE)

#endif

        {

          if (__v > 0.0l)

            __v = numeric_limits<long double>::max();

          else

            __v = -numeric_limits<long double>::max();

          __err = ios_base::failbit;

        }

      setlocale(LC_ALL, __sav);

      delete [] __sav;

    }

  void

  locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s,

                                    __c_locale)

  {

    // Currently, the generic model only supports the "C" locale.

    // See http://gcc.gnu.org/ml/libstdc++/2003-02/msg00345.html

    __cloc = NULL;

    if (strcmp(__s, "C"))

      __throw_runtime_error(__N("locale::facet::_S_create_c_locale "

                            "name not valid"));

  }

  void

  locale::facet::_S_destroy_c_locale(__c_locale& __cloc)

  { __cloc = NULL; }

  __c_locale

  locale::facet::_S_clone_c_locale(__c_locale&) throw()

  { return __c_locale(); }

  __c_locale

  locale::facet::_S_lc_ctype_c_locale(__c_locale, const char*)

  { return __c_locale(); }

_GLIBCXX_END_NAMESPACE

_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)

  const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] =

    {

      "LC_CTYPE",

      "LC_NUMERIC",

      "LC_TIME",

      "LC_COLLATE",

      "LC_MONETARY",

      "LC_MESSAGES"

    };

_GLIBCXX_END_NAMESPACE

_GLIBCXX_BEGIN_NAMESPACE(std)

  const char* const* const locale::_S_categories = __gnu_cxx::category_names;

_GLIBCXX_END_NAMESPACE

// XXX GLIBCXX_ABI Deprecated

#ifdef _GLIBCXX_LONG_DOUBLE_COMPAT

#define _GLIBCXX_LDBL_COMPAT(dbl, ldbl) \

  extern "C" void ldbl (void) __attribute__ ((alias (#dbl)))

_GLIBCXX_LDBL_COMPAT(_ZSt14__convert_to_vIdEvPKcRT_RSt12_Ios_IostateRKPi, _ZSt14__convert_to_vIeEvPKcRT_RSt12_Ios_IostateRKPi);

#endif // _GLIBCXX_LONG_DOUBLE_COMPAT