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

   1 // std::numpunct implementation details, GNU version -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   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: 22.2.3.1.2  numpunct virtual functions
  33 //
  34
  35 // Written by Benjamin Kosnik <bkoz@redhat.com>
  36
  37 #include <locale>
  38 #include <bits/c++locale_internal.h>
  39
  40 _GLIBCXX_BEGIN_NAMESPACE(std)
  41
  42   template<>
  43     void
  44     numpunct<char>::_M_initialize_numpunct(__c_locale __cloc)
  45     {
  46       if (!_M_data)
  47         _M_data = new __numpunct_cache<char>;
  48
  49       if (!__cloc)
  50         {
  51           // "C" locale
  52           _M_data->_M_grouping = "";
  53           _M_data->_M_grouping_size = 0;
  54           _M_data->_M_use_grouping = false;
  55
  56           _M_data->_M_decimal_point = '.';
  57           _M_data->_M_thousands_sep = ',';
  58
  59           for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
  60             _M_data->_M_atoms_out[__i] = __num_base::_S_atoms_out[__i];
  61
  62           for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
  63             _M_data->_M_atoms_in[__j] = __num_base::_S_atoms_in[__j];
  64         }
  65       else
  66         {
  67           // Named locale.
  68           _M_data->_M_decimal_point = *(__nl_langinfo_l(DECIMAL_POINT,
  69                                                         __cloc));
  70           _M_data->_M_thousands_sep = *(__nl_langinfo_l(THOUSANDS_SEP,
  71                                                         __cloc));
  72
  73           // Check for NULL, which implies no grouping.
  74           if (_M_data->_M_thousands_sep == '\0')
  75             {
  76               // Like in "C" locale.
  77               _M_data->_M_grouping = "";
  78               _M_data->_M_grouping_size = 0;
  79               _M_data->_M_use_grouping = false;
  80               _M_data->_M_thousands_sep = ',';
  81             }
  82           else
  83             {
  84               _M_data->_M_grouping = __nl_langinfo_l(GROUPING, __cloc);
  85               _M_data->_M_grouping_size = strlen(_M_data->_M_grouping);
  86             }
  87         }
  88
  89       // NB: There is no way to extact this info from posix locales.
  90       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
  91       _M_data->_M_truename = "true";
  92       _M_data->_M_truename_size = 4;
  93       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
  94       _M_data->_M_falsename = "false";
  95       _M_data->_M_falsename_size = 5;
  96     }
  97
  98   template<>
  99     numpunct<char>::~numpunct()
 100     { delete _M_data; }
 101
 102 #ifdef _GLIBCXX_USE_WCHAR_T
 103   template<>
 104     void
 105     numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc)
 106     {
 107       if (!_M_data)
 108         _M_data = new __numpunct_cache<wchar_t>;
 109
 110       if (!__cloc)
 111         {
 112           // "C" locale
 113           _M_data->_M_grouping = "";
 114           _M_data->_M_grouping_size = 0;
 115           _M_data->_M_use_grouping = false;
 116
 117           _M_data->_M_decimal_point = L'.';
 118           _M_data->_M_thousands_sep = L',';
 119
 120           // Use ctype::widen code without the facet...
 121           for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
 122             _M_data->_M_atoms_out[__i] =
 123               static_cast<wchar_t>(__num_base::_S_atoms_out[__i]);
 124
 125           for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
 126             _M_data->_M_atoms_in[__j] =
 127               static_cast<wchar_t>(__num_base::_S_atoms_in[__j]);
 128         }
 129       else
 130         {
 131           // Named locale.
 132           // NB: In the GNU model wchar_t is always 32 bit wide.
 133           union { char *__s; wchar_t __w; } __u;
 134           __u.__s = __nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc);
 135           _M_data->_M_decimal_point = __u.__w;
 136
 137           __u.__s = __nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC, __cloc);
 138           _M_data->_M_thousands_sep = __u.__w;
 139
 140           // Check for NULL, which implies no grouping.
 141           if (_M_data->_M_thousands_sep == L'\0')
 142             {
 143               // Like in "C" locale.
 144               _M_data->_M_grouping = "";
 145               _M_data->_M_grouping_size = 0;
 146               _M_data->_M_use_grouping = false;
 147               _M_data->_M_thousands_sep = L',';
 148             }
 149           else
 150             {
 151               _M_data->_M_grouping = __nl_langinfo_l(GROUPING, __cloc);
 152               _M_data->_M_grouping_size = strlen(_M_data->_M_grouping);
 153             }
 154         }
 155
 156       // NB: There is no way to extact this info from posix locales.
 157       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
 158       _M_data->_M_truename = L"true";
 159       _M_data->_M_truename_size = 4;
 160       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
 161       _M_data->_M_falsename = L"false";
 162       _M_data->_M_falsename_size = 5;
 163     }
 164
 165   template<>
 166     numpunct<wchar_t>::~numpunct()
 167     { delete _M_data; }
 168  #endif
 169
 170 _GLIBCXX_END_NAMESPACE