libstdc++-v3/config/locale/dragonfly/c_locale.cc

   1 // localization implementation details, DragonFly version -*- C++ -*-
   2
   3 // Copyright (C) 2014-2015 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 //
  26 // ISO C++ 14882: 22.8  Standard locale categories.
  27 //
  28
  29 // Written by Benjamin Kosnik <bkoz@redhat.com>
  30 // Modified for DragonFly by John Marino <gnugcc@marino.st>
  31
  32 #include <cstdlib>
  33 #include <locale>
  34 #include <stdexcept>
  35 #include <limits>
  36 #include <langinfo.h>
  37 #include <xlocale.h>
  38
  39 namespace std _GLIBCXX_VISIBILITY(default)
  40 {
  41 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  42
  43   template<>
  44     void
  45     __convert_to_v(const char* __s, float& __v, ios_base::iostate& __err,
  46                    const __c_locale& __cloc) throw()
  47     {
  48       char* __sanity;
  49       __v = strtof_l(__s, &__sanity, (locale_t)__cloc);
  50
  51       // _GLIBCXX_RESOLVE_LIB_DEFECTS
  52       // 23. Num_get overflow result.
  53       if (__sanity == __s || *__sanity != '\0')
  54         {
  55           __v = 0.0f;
  56           __err = ios_base::failbit;
  57         }
  58       else if (__v == numeric_limits<float>::infinity())
  59         {
  60           __v = numeric_limits<float>::max();
  61           __err = ios_base::failbit;
  62         }
  63       else if (__v == -numeric_limits<float>::infinity())
  64         {
  65           __v = -numeric_limits<float>::max();
  66           __err = ios_base::failbit;
  67         }
  68     }
  69
  70   template<>
  71     void
  72     __convert_to_v(const char* __s, double& __v, ios_base::iostate& __err,
  73                    const __c_locale& __cloc) throw()
  74     {
  75       char* __sanity;
  76       __v = strtod_l(__s, &__sanity, (locale_t)__cloc);
  77
  78       // _GLIBCXX_RESOLVE_LIB_DEFECTS
  79       // 23. Num_get overflow result.
  80       if (__sanity == __s || *__sanity != '\0')
  81         {
  82           __v = 0.0;
  83           __err = ios_base::failbit;
  84         }
  85       else if (__v == numeric_limits<double>::infinity())
  86         {
  87           __v = numeric_limits<double>::max();
  88           __err = ios_base::failbit;
  89         }
  90       else if (__v == -numeric_limits<double>::infinity())
  91         {
  92           __v = -numeric_limits<double>::max();
  93           __err = ios_base::failbit;
  94         }
  95     }
  96
  97   template<>
  98     void
  99     __convert_to_v(const char* __s, long double& __v, ios_base::iostate& __err,
 100                    const __c_locale& __cloc) throw()
 101     {
 102       char* __sanity;
 103       __v = strtold_l(__s, &__sanity, (locale_t)__cloc);
 104
 105       // _GLIBCXX_RESOLVE_LIB_DEFECTS
 106       // 23. Num_get overflow result.
 107       if (__sanity == __s || *__sanity != '\0')
 108         {
 109           __v = 0.0l;
 110           __err = ios_base::failbit;
 111         }
 112       else if (__v == numeric_limits<long double>::infinity())
 113         {
 114           __v = numeric_limits<long double>::max();
 115           __err = ios_base::failbit;
 116         }
 117       else if (__v == -numeric_limits<long double>::infinity())
 118         {
 119           __v = -numeric_limits<long double>::max();
 120           __err = ios_base::failbit;
 121         }
 122     }
 123
 124   void
 125   locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s,
 126                                     __c_locale __old)
 127   {
 128     __cloc = (__c_locale)newlocale(LC_ALL_MASK, __s, (locale_t)__old);
 129     if (!__cloc)
 130       {
 131         // This named locale is not supported by the underlying OS.
 132         __throw_runtime_error(__N("locale::facet::_S_create_c_locale "
 133                                   "name not valid"));
 134       }
 135   }
 136
 137   void
 138   locale::facet::_S_destroy_c_locale(__c_locale& __cloc)
 139   {
 140     if (__cloc && _S_get_c_locale() != __cloc)
 141       freelocale((locale_t)__cloc);
 142   }
 143
 144   __c_locale
 145   locale::facet::_S_clone_c_locale(__c_locale& __cloc) throw()
 146   { return (__c_locale)duplocale((locale_t)__cloc); }
 147
 148   __c_locale
 149   locale::facet::_S_lc_ctype_c_locale(__c_locale __cloc, const char* __s)
 150   {
 151     __c_locale __dup = (__c_locale)duplocale((locale_t)__cloc);
 152     if (__dup == __c_locale(0))
 153       __throw_runtime_error(__N("locale::facet::_S_lc_ctype_c_locale "
 154                                 "duplocale error"));
 155     __c_locale __changed = (__c_locale)newlocale(LC_CTYPE_MASK, __s,
 156                                                  (locale_t)__dup);
 157     if (__changed == __c_locale(0))
 158       {
 159         freelocale((locale_t)__dup);
 160         __throw_runtime_error(__N("locale::facet::_S_lc_ctype_c_locale "
 161                                   "newlocale error"));
 162       }
 163     return __changed;
 164   }
 165
 166 _GLIBCXX_END_NAMESPACE_VERSION
 167 } // namespace
 168
 169 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
 170 {
 171 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 172
 173   const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] =
 174     {
 175       "LC_CTYPE",
 176       "LC_NUMERIC",
 177       "LC_TIME",
 178       "LC_COLLATE",
 179       "LC_MONETARY",
 180       "LC_MESSAGES"
 181     };
 182
 183 _GLIBCXX_END_NAMESPACE_VERSION
 184 } // namespace
 185
 186 namespace std _GLIBCXX_VISIBILITY(default)
 187 {
 188 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 189
 190   const char* const* const locale::_S_categories = __gnu_cxx::category_names;
 191
 192 _GLIBCXX_END_NAMESPACE_VERSION
 193 } // namespace
 194
 195 // XXX GLIBCXX_ABI Deprecated
 196 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
 197 #define _GLIBCXX_LDBL_COMPAT(dbl, ldbl) \
 198   extern "C" void ldbl (void) __attribute__ ((alias (#dbl)))
 199 _GLIBCXX_LDBL_COMPAT(_ZSt14__convert_to_vIdEvPKcRT_RSt12_Ios_IostateRKP15__locale_struct, _ZSt14__convert_to_vIeEvPKcRT_RSt12_Ios_IostateRKP15__locale_struct);
 200 #endif // _GLIBCXX_LONG_DOUBLE_COMPAT