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

   1 // Wrapper for underlying C-language localization -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 //
  32 // ISO C++ 14882: 22.8  Standard locale categories.
  33 //
  34
  35 // Written by Benjamin Kosnik <bkoz@redhat.com>
  36
  37 #include <cerrno>  // For errno
  38 #include <locale>
  39 #include <stdexcept>
  40 #include <langinfo.h>
  41 #include <bits/c++locale_internal.h>
  42
  43 namespace std
  44 {
  45   template<>
  46     void
  47     __convert_to_v(const char* __s, float& __v, ios_base::iostate& __err,
  48                    const __c_locale& __cloc)
  49     {
  50       char* __sanity;
  51       errno = 0;
  52       float __f = __strtof_l(__s, &__sanity, __cloc);
  53       if (__sanity != __s && errno != ERANGE)
  54         __v = __f;
  55       else
  56         __err |= ios_base::failbit;
  57     }
  58
  59   template<>
  60     void
  61     __convert_to_v(const char* __s, double& __v, ios_base::iostate& __err,
  62                    const __c_locale& __cloc)
  63     {
  64       char* __sanity;
  65       errno = 0;
  66       double __d = __strtod_l(__s, &__sanity, __cloc);
  67       if (__sanity != __s && errno != ERANGE)
  68         __v = __d;
  69       else
  70         __err |= ios_base::failbit;
  71     }
  72
  73   template<>
  74     void
  75     __convert_to_v(const char* __s, long double& __v, ios_base::iostate& __err,
  76                    const __c_locale& __cloc)
  77     {
  78       char* __sanity;
  79       errno = 0;
  80       long double __ld = __strtold_l(__s, &__sanity, __cloc);
  81       if (__sanity != __s && errno != ERANGE)
  82         __v = __ld;
  83       else
  84         __err |= ios_base::failbit;
  85     }
  86
  87   void
  88   locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s,
  89                                     __c_locale __old)
  90   {
  91     __cloc = __newlocale(1 << LC_ALL, __s, __old);
  92     if (!__cloc)
  93       {
  94         // This named locale is not supported by the underlying OS.
  95         __throw_runtime_error(__N("locale::facet::_S_create_c_locale "
  96                               "name not valid"));
  97       }
  98   }
  99
 100   void
 101   locale::facet::_S_destroy_c_locale(__c_locale& __cloc)
 102   {
 103     if (_S_get_c_locale() != __cloc)
 104       __freelocale(__cloc);
 105   }
 106
 107   __c_locale
 108   locale::facet::_S_clone_c_locale(__c_locale& __cloc)
 109   { return __duplocale(__cloc); }
 110 } // namespace std
 111
 112 namespace __gnu_cxx
 113 {
 114   const char* const category_names[6 + _GLIBCXX_NUM_CATEGORIES] =
 115     {
 116       "LC_CTYPE",
 117       "LC_NUMERIC",
 118       "LC_TIME",
 119       "LC_COLLATE",
 120       "LC_MONETARY",
 121       "LC_MESSAGES",
 122       "LC_PAPER",
 123       "LC_NAME",
 124       "LC_ADDRESS",
 125       "LC_TELEPHONE",
 126       "LC_MEASUREMENT",
 127       "LC_IDENTIFICATION"
 128     };
 129 }
 130
 131 namespace std
 132 {
 133   const char* const* const locale::_S_categories = __gnu_cxx::category_names;
 134 }  // namespace std