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// Wrapper for underlying C-language localization -*- C++ -*-
// Copyright (C) 2001, 2002, 2003 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// 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>
#include <cerrno> // For errno
#include <cmath> // For isinf, finite, finitef, fabs
#include <cstdlib> // For strof, strtold
#include <locale>
#ifdef _GLIBCXX_HAVE_IEEEFP_H
#include <ieeefp.h>
#endif
namespace std
{
// Specializations for all types used in num_get.
template<>
void
__convert_to_v(const char* __s, float& __v, ios_base::iostate& __err,
const __c_locale&)
{
if (!(__err & ios_base::failbit))
{
// Assumes __s formatted for "C" locale.
char* __old = strdup(setlocale(LC_ALL, NULL));
setlocale(LC_ALL, "C");
char* __sanity;
errno = 0;
#if defined(_GLIBCXX_HAVE_STRTOF)
float __f = strtof(__s, &__sanity);
#else
double __d = strtod(__s, &__sanity);
float __f = static_cast<float>(__d);
#ifdef _GLIBCXX_HAVE_FINITEF
if (!finitef (__f))
errno = ERANGE;
#elif defined (_GLIBCXX_HAVE_FINITE)
if (!finite (static_cast<double> (__f)))
errno = ERANGE;
#elif defined (_GLIBCXX_HAVE_ISINF)
if (isinf (static_cast<double> (__f)))
errno = ERANGE;
#else
if (fabs(__d) > numeric_limits<float>::max())
errno = ERANGE;
#endif
#endif
if (__sanity != __s && errno != ERANGE)
__v = __f;
else
__err |= ios_base::failbit;
setlocale(LC_ALL, __old);
free(__old);
}
}
template<>
void
__convert_to_v(const char* __s, double& __v, ios_base::iostate& __err,
const __c_locale&)
{
if (!(__err & ios_base::failbit))
{
// Assumes __s formatted for "C" locale.
char* __old = strdup(setlocale(LC_ALL, NULL));
setlocale(LC_ALL, "C");
char* __sanity;
errno = 0;
double __d = strtod(__s, &__sanity);
if (__sanity != __s && errno != ERANGE)
__v = __d;
else
__err |= ios_base::failbit;
setlocale(LC_ALL, __old);
free(__old);
}
}
template<>
void
__convert_to_v(const char* __s, long double& __v,
ios_base::iostate& __err, const __c_locale&)
{
if (!(__err & ios_base::failbit))
{
// Assumes __s formatted for "C" locale.
char* __old = strdup(setlocale(LC_ALL, NULL));
setlocale(LC_ALL, "C");
#if defined(_GLIBCXX_HAVE_STRTOLD)
char* __sanity;
errno = 0;
long double __ld = strtold(__s, &__sanity);
if (__sanity != __s && errno != ERANGE)
__v = __ld;
#else
typedef char_traits<char>::int_type int_type;
long double __ld;
errno = 0;
int __p = sscanf(__s, "%Lf", &__ld);
if (__p && static_cast<int_type>(__p) != char_traits<char>::eof()
&& errno != ERANGE)
__v = __ld;
#endif
else
__err |= ios_base::failbit;
setlocale(LC_ALL, __old);
free(__old);
}
}
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&)
{ return __c_locale(); }
} // namespace std
namespace __gnu_cxx
{
const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] =
{
"LC_CTYPE",
"LC_NUMERIC",
"LC_TIME",
"LC_COLLATE",
"LC_MONETARY",
"LC_MESSAGES"
};
}
namespace std
{
const char* const* const locale::_S_categories = __gnu_cxx::category_names;
} // namespace std
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