268 lines
7.0 KiB
C++
268 lines
7.0 KiB
C++
// Wrapper for underlying C-language localization -*- C++ -*-
|
|
|
|
// Copyright (C) 2001-2014 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>
|
|
|
|
#ifdef _GLIBCXX_HAVE_IEEEFP_H
|
|
#include <ieeefp.h>
|
|
#endif
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
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, 0);
|
|
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, 0);
|
|
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, 0);
|
|
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 = 0;
|
|
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 = 0; }
|
|
|
|
__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_VERSION
|
|
} // namespace
|
|
|
|
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] =
|
|
{
|
|
"LC_CTYPE",
|
|
"LC_NUMERIC",
|
|
"LC_TIME",
|
|
"LC_COLLATE",
|
|
"LC_MONETARY",
|
|
"LC_MESSAGES"
|
|
};
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
const char* const* const locale::_S_categories = __gnu_cxx::category_names;
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // 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
|