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

   1 // std::numpunct implementation details, GNU version -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  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 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_use_grouping = false;
  53
  54           _M_data->_M_decimal_point = '.';
  55           _M_data->_M_thousands_sep = ',';
  56
  57           for (size_t i = 0; i < __num_base::_S_oend; ++i)
  58             _M_data->_M_atoms_out[i] = __num_base::_S_atoms_out[i];
  59           _M_data->_M_atoms_out[__num_base::_S_oend] = char();
  60
  61           for (size_t i = 0; i < __num_base::_S_iend; ++i)
  62             _M_data->_M_atoms_in[i] = __num_base::_S_atoms_in[i];
  63           _M_data->_M_atoms_in[__num_base::_S_iend] = char();
  64         }
  65       else
  66         {
  67           // Named locale.
  68           _M_data->_M_decimal_point = *(__nl_langinfo_l(RADIXCHAR, __cloc));
  69           _M_data->_M_thousands_sep = *(__nl_langinfo_l(THOUSEP, __cloc));
  70
  71           // Check for NULL, which implies no grouping.
  72           if (_M_data->_M_thousands_sep == '\0')
  73             _M_data->_M_grouping = "";
  74           else
  75             _M_data->_M_grouping = __nl_langinfo_l(GROUPING, __cloc);
  76         }
  77       // NB: There is no way to extact this info from posix locales.
  78       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
  79       _M_data->_M_truename = "true";
  80       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
  81       _M_data->_M_falsename = "false";
  82     }
  83
  84   template<>
  85     numpunct<char>::~numpunct()
  86     { delete _M_data; }
  87
  88 #ifdef _GLIBCXX_USE_WCHAR_T
  89   template<>
  90     void
  91     numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc)
  92     {
  93       if (!_M_data)
  94         _M_data = new __numpunct_cache<wchar_t>;
  95
  96       if (!__cloc)
  97         {
  98           // "C" locale
  99           _M_data->_M_grouping = "";
 100           _M_data->_M_use_grouping = false;
 101
 102           _M_data->_M_decimal_point = L'.';
 103           _M_data->_M_thousands_sep = L',';
 104
 105 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
 106           __c_locale __old = __uselocale(_S_get_c_locale());
 107 #endif
 108           // Use ctype::widen code without the facet...
 109           unsigned char uc;
 110           for (size_t i = 0; i < __num_base::_S_oend; ++i)
 111             {
 112               uc = static_cast<unsigned char>(__num_base::_S_atoms_out[i]);
 113               _M_data->_M_atoms_out[i] = btowc(uc);
 114             }
 115           _M_data->_M_atoms_out[__num_base::_S_oend] = wchar_t();
 116
 117           for (size_t i = 0; i < __num_base::_S_iend; ++i)
 118             {
 119               uc = static_cast<unsigned char>(__num_base::_S_atoms_in[i]);
 120               _M_data->_M_atoms_in[i] = btowc(uc);
 121             }
 122           _M_data->_M_atoms_in[__num_base::_S_iend] = wchar_t();
 123 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
 124           __uselocale(__old);
 125 #endif
 126         }
 127       else
 128         {
 129           // Named locale.
 130           union __s_and_w { const char *__s; unsigned int __w; } __u;
 131           __u.__s = __nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc);
 132           _M_data->_M_decimal_point = static_cast<wchar_t>(__u.__w);
 133
 134           __u.__s = __nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC, __cloc);
 135           _M_data->_M_thousands_sep = static_cast<wchar_t>(__u.__w);
 136
 137           if (_M_data->_M_thousands_sep == L'\0')
 138             _M_data->_M_grouping = "";
 139           else
 140             _M_data->_M_grouping = __nl_langinfo_l(GROUPING, __cloc);
 141         }
 142       // NB: There is no way to extact this info from posix locales.
 143       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
 144       _M_data->_M_truename = L"true";
 145       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
 146       _M_data->_M_falsename = L"false";
 147     }
 148
 149   template<>
 150     numpunct<wchar_t>::~numpunct()
 151     { delete _M_data; }
 152  #endif
 153 }