numeric_members.cc   [plain text]

// std::numpunct implementation details, GNU version -*- C++ -*-

// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

//
// ISO C++ 14882: 22.2.3.1.2  numpunct virtual functions
//

// Written by Benjamin Kosnik <bkoz@redhat.com>

#include <locale>
#include <bits/c++locale_internal.h>

namespace std
{
  template<> 
    void
    numpunct<char>::_M_initialize_numpunct(__c_locale __cloc)
    {
      if (!__cloc)
	{
	  // "C" locale
	  _M_decimal_point = '.';
	  _M_thousands_sep = ',';
	  _M_grouping = "";
	}
      else
	{
	  // Named locale.
	  _M_decimal_point = *(__nl_langinfo_l(RADIXCHAR, __cloc));
	  _M_thousands_sep = *(__nl_langinfo_l(THOUSEP, __cloc));
	  // Check for NUL, which implies no grouping.
	  if (_M_thousands_sep == '\0')
	    _M_grouping = "";
	  else
	    _M_grouping = __nl_langinfo_l(GROUPING, __cloc);
	}
      // NB: There is no way to extact this info from posix locales.
      // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
      _M_truename = "true";
      // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
      _M_falsename = "false";
    }
 
  template<> 
    numpunct<char>::~numpunct()
    { }
   
#ifdef _GLIBCPP_USE_WCHAR_T
  template<> 
    void
    numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc)
    {
      if (!__cloc)
	{
	  // "C" locale
	  _M_decimal_point = L'.';
	  _M_thousands_sep = L',';
	  _M_grouping = "";
	}
      else
	{
	  // Named locale.
	  _M_decimal_point = static_cast<wchar_t>(((union { const char *__s; unsigned int __w; }){ __s: __nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc)}).__w);
	  _M_thousands_sep = static_cast<wchar_t>(((union { const char *__s; unsigned int __w; }){ __s: __nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC, __cloc)}).__w);
	  if (_M_thousands_sep == L'\0')
	    _M_grouping = "";
	  else
	    _M_grouping = __nl_langinfo_l(GROUPING, __cloc);
	}
      // NB: There is no way to extact this info from posix locales.
      // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
      _M_truename = L"true";
      // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
      _M_falsename = L"false";
    }

  template<> 
    numpunct<wchar_t>::~numpunct()
    { }
 #endif
}