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 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 2, 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 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 //
  31 // ISO C++ 14882: 22.2.3.1.2  numpunct virtual functions
  32 //
  33
  34 // Written by Benjamin Kosnik <bkoz@redhat.com>
  35
  36 #include <locale>
  37 #include <bits/c++locale_internal.h>
  38
  39 _GLIBCXX_BEGIN_NAMESPACE(std)
  40
  41   template<>
  42     void
  43     numpunct<char>::_M_initialize_numpunct(__c_locale __cloc)
  44     {
  45       if (!_M_data)
  46         _M_data = new __numpunct_cache<char>;
  47
  48       if (!__cloc)
  49         {
  50           // "C" locale
  51           _M_data->_M_grouping = "";
  52           _M_data->_M_grouping_size = 0;
  53           _M_data->_M_use_grouping = false;
  54
  55           _M_data->_M_decimal_point = '.';
  56           _M_data->_M_thousands_sep = ',';
  57
  58           for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
  59             _M_data->_M_atoms_out[__i] = __num_base::_S_atoms_out[__i];
  60
  61           for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
  62             _M_data->_M_atoms_in[__j] = __num_base::_S_atoms_in[__j];
  63         }
  64       else
  65         {
  66           // Named locale.
  67           _M_data->_M_decimal_point = *(__nl_langinfo_l(DECIMAL_POINT,
  68                                                         __cloc));
  69           _M_data->_M_thousands_sep = *(__nl_langinfo_l(THOUSANDS_SEP,
  70                                                         __cloc));
  71
  72           // Check for NULL, which implies no grouping.
  73           if (_M_data->_M_thousands_sep == '\0')
  74             _M_data->_M_grouping = "";
  75           else
  76             _M_data->_M_grouping = __nl_langinfo_l(GROUPING, __cloc);
  77           _M_data->_M_grouping_size = strlen(_M_data->_M_grouping);
  78         }
  79
  80       // NB: There is no way to extact this info from posix locales.
  81       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
  82       _M_data->_M_truename = "true";
  83       _M_data->_M_truename_size = 4;
  84       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
  85       _M_data->_M_falsename = "false";
  86       _M_data->_M_falsename_size = 5;
  87     }
  88
  89   template<>
  90     numpunct<char>::~numpunct()
  91     { delete _M_data; }
  92
  93 #ifdef _GLIBCXX_USE_WCHAR_T
  94   template<>
  95     void
  96     numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc)
  97     {
  98       if (!_M_data)
  99         _M_data = new __numpunct_cache<wchar_t>;
 100
 101       if (!__cloc)
 102         {
 103           // "C" locale
 104           _M_data->_M_grouping = "";
 105           _M_data->_M_grouping_size = 0;
 106           _M_data->_M_use_grouping = false;
 107
 108           _M_data->_M_decimal_point = L'.';
 109           _M_data->_M_thousands_sep = L',';
 110
 111           // Use ctype::widen code without the facet...
 112           for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
 113             _M_data->_M_atoms_out[__i] =
 114               static_cast<wchar_t>(__num_base::_S_atoms_out[__i]);
 115
 116           for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
 117             _M_data->_M_atoms_in[__j] =
 118               static_cast<wchar_t>(__num_base::_S_atoms_in[__j]);
 119         }
 120       else
 121         {
 122           // Named locale.
 123           // NB: In the GNU model wchar_t is always 32 bit wide.
 124           union { char *__s; wchar_t __w; } __u;
 125           __u.__s = __nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc);
 126           _M_data->_M_decimal_point = __u.__w;
 127
 128           __u.__s = __nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC, __cloc);
 129           _M_data->_M_thousands_sep = __u.__w;
 130
 131           if (_M_data->_M_thousands_sep == L'\0')
 132             _M_data->_M_grouping = "";
 133           else
 134             _M_data->_M_grouping = __nl_langinfo_l(GROUPING, __cloc);
 135           _M_data->_M_grouping_size = strlen(_M_data->_M_grouping);
 136         }
 137
 138       // NB: There is no way to extact this info from posix locales.
 139       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
 140       _M_data->_M_truename = L"true";
 141       _M_data->_M_truename_size = 4;
 142       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
 143       _M_data->_M_falsename = L"false";
 144       _M_data->_M_falsename_size = 5;
 145     }
 146
 147   template<>
 148     numpunct<wchar_t>::~numpunct()
 149     { delete _M_data; }
 150  #endif
 151
 152 _GLIBCXX_END_NAMESPACE