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

   1 // std::numpunct implementation details, GNU version -*- C++ -*-
   2
   3 // Copyright (C) 2001-2014 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: 22.2.3.1.2  numpunct virtual functions
  27 //
  28
  29 // Written by Benjamin Kosnik <bkoz@redhat.com>
  30
  31 #include <locale>
  32 #include <bits/c++locale_internal.h>
  33
  34 namespace std _GLIBCXX_VISIBILITY(default)
  35 {
  36 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  37
  38   template<>
  39     void
  40     numpunct<char>::_M_initialize_numpunct(__c_locale __cloc)
  41     {
  42       if (!_M_data)
  43         _M_data = new __numpunct_cache<char>;
  44
  45       if (!__cloc)
  46         {
  47           // "C" locale
  48           _M_data->_M_grouping = "";
  49           _M_data->_M_grouping_size = 0;
  50           _M_data->_M_use_grouping = false;
  51
  52           _M_data->_M_decimal_point = '.';
  53           _M_data->_M_thousands_sep = ',';
  54
  55           for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
  56             _M_data->_M_atoms_out[__i] = __num_base::_S_atoms_out[__i];
  57
  58           for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
  59             _M_data->_M_atoms_in[__j] = __num_base::_S_atoms_in[__j];
  60         }
  61       else
  62         {
  63           // Named locale.
  64           _M_data->_M_decimal_point = *(__nl_langinfo_l(DECIMAL_POINT,
  65                                                         __cloc));
  66           _M_data->_M_thousands_sep = *(__nl_langinfo_l(THOUSANDS_SEP,
  67                                                         __cloc));
  68
  69           // Check for NULL, which implies no grouping.
  70           if (_M_data->_M_thousands_sep == '\0')
  71             {
  72               // Like in "C" locale.
  73               _M_data->_M_grouping = "";
  74               _M_data->_M_grouping_size = 0;
  75               _M_data->_M_use_grouping = false;
  76               _M_data->_M_thousands_sep = ',';
  77             }
  78           else
  79             {
  80               const char* __src = __nl_langinfo_l(GROUPING, __cloc);
  81               const size_t __len = strlen(__src);
  82               if (__len)
  83                 {
  84                   __try
  85                     {
  86                       char* __dst = new char[__len + 1];
  87                       memcpy(__dst, __src, __len + 1);
  88                       _M_data->_M_grouping = __dst;
  89                     }
  90                   __catch(...)
  91                     {
  92                       delete _M_data;
  93                       _M_data = 0;
  94                       __throw_exception_again;
  95                     }
  96                 }
  97               else
  98                 {
  99                   _M_data->_M_grouping = "";
 100                   _M_data->_M_use_grouping = false;
 101                 }
 102               _M_data->_M_grouping_size = __len;
 103             }
 104         }
 105
 106       // NB: There is no way to extact this info from posix locales.
 107       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
 108       _M_data->_M_truename = "true";
 109       _M_data->_M_truename_size = 4;
 110       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
 111       _M_data->_M_falsename = "false";
 112       _M_data->_M_falsename_size = 5;
 113     }
 114
 115   template<>
 116     numpunct<char>::~numpunct()
 117     {
 118       if (_M_data->_M_grouping_size)
 119         delete [] _M_data->_M_grouping;
 120       delete _M_data;
 121     }
 122
 123 #ifdef _GLIBCXX_USE_WCHAR_T
 124   template<>
 125     void
 126     numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc)
 127     {
 128       if (!_M_data)
 129         _M_data = new __numpunct_cache<wchar_t>;
 130
 131       if (!__cloc)
 132         {
 133           // "C" locale
 134           _M_data->_M_grouping = "";
 135           _M_data->_M_grouping_size = 0;
 136           _M_data->_M_use_grouping = false;
 137
 138           _M_data->_M_decimal_point = L'.';
 139           _M_data->_M_thousands_sep = L',';
 140
 141           // Use ctype::widen code without the facet...
 142           for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
 143             _M_data->_M_atoms_out[__i] =
 144               static_cast<wchar_t>(__num_base::_S_atoms_out[__i]);
 145
 146           for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
 147             _M_data->_M_atoms_in[__j] =
 148               static_cast<wchar_t>(__num_base::_S_atoms_in[__j]);
 149         }
 150       else
 151         {
 152           // Named locale.
 153           // NB: In the GNU model wchar_t is always 32 bit wide.
 154           union { char *__s; wchar_t __w; } __u;
 155           __u.__s = __nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc);
 156           _M_data->_M_decimal_point = __u.__w;
 157
 158           __u.__s = __nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC, __cloc);
 159           _M_data->_M_thousands_sep = __u.__w;
 160
 161           // Check for NULL, which implies no grouping.
 162           if (_M_data->_M_thousands_sep == L'\0')
 163             {
 164               // Like in "C" locale.
 165               _M_data->_M_grouping = "";
 166               _M_data->_M_grouping_size = 0;
 167               _M_data->_M_use_grouping = false;
 168               _M_data->_M_thousands_sep = L',';
 169             }
 170           else
 171             {
 172               const char* __src = __nl_langinfo_l(GROUPING, __cloc);
 173               const size_t __len = strlen(__src);
 174               if (__len)
 175                 {
 176                   __try
 177                     {
 178                       char* __dst = new char[__len + 1];
 179                       memcpy(__dst, __src, __len + 1);
 180                       _M_data->_M_grouping = __dst;
 181                     }
 182                   __catch(...)
 183                     {
 184                       delete _M_data;
 185                       _M_data = 0;
 186                       __throw_exception_again;
 187                     }
 188                 }
 189               else
 190                 {
 191                   _M_data->_M_grouping = "";
 192                   _M_data->_M_use_grouping = false;
 193                 }
 194               _M_data->_M_grouping_size = __len;
 195             }
 196         }
 197
 198       // NB: There is no way to extact this info from posix locales.
 199       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
 200       _M_data->_M_truename = L"true";
 201       _M_data->_M_truename_size = 4;
 202       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
 203       _M_data->_M_falsename = L"false";
 204       _M_data->_M_falsename_size = 5;
 205     }
 206
 207   template<>
 208     numpunct<wchar_t>::~numpunct()
 209     {
 210       if (_M_data->_M_grouping_size)
 211         delete [] _M_data->_M_grouping;
 212       delete _M_data;
 213     }
 214  #endif
 215
 216 _GLIBCXX_END_NAMESPACE_VERSION
 217 } // namespace