gcc/libstdc++-v3/config/c_locale_gnu.cc

// Wrapper for underlying C-language localization -*- C++ -*-

// Copyright (C) 2001 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: 22.8  Standard locale categories.
//

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

#include <locale>
#include <stdexcept>
#include <langinfo.h>

namespace std 
{
  void
  locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s)
  {
    // XXX
    // perhaps locale::categories could be made equivalent to LC_*_MASK
    //    _M_c_locale = __newlocale(1 << LC_ALL, __str.c_str(), NULL);
    //    _M_c_locale = __newlocale(locale::all, __str.c_str(), NULL);
    __cloc = __newlocale(LC_ALL, __s, NULL);
    if (!__cloc)
      {
	// This named locale is not supported by the underlying OS.
	throw runtime_error("attempt to create locale from unknown name");
      }
  }
  
  void
  locale::facet::_S_destroy_c_locale(__c_locale& __cloc)
  {
    if (__cloc)
      __freelocale(__cloc); 
  }

  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));
	  _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";
    }
      
#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 = reinterpret_cast<wchar_t>(__nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc));
	  _M_thousands_sep = reinterpret_cast<wchar_t>(__nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC,__cloc));
	  _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";
    }
#endif

  template<> 
    void
    moneypunct<char>::_M_initialize_moneypunct(__c_locale __cloc)
    {
      if (!__cloc)
	{
	  // "C" locale
	  _M_decimal_point = '.';
	  _M_thousands_sep = ',';
	  _M_grouping = "";
	  _M_curr_symbol = string_type();
	  _M_positive_sign = string_type();
	  _M_negative_sign = string_type();
	  _M_frac_digits = 0;
	  _M_pos_format = money_base::_S_default_pattern;
	  _M_neg_format = money_base::_S_default_pattern;
	}
      else
	{
	  // Named locale.
	  _M_decimal_point = *(__nl_langinfo_l(__MON_DECIMAL_POINT, __cloc));
	  _M_thousands_sep = *(__nl_langinfo_l(__MON_THOUSANDS_SEP, __cloc));
	  _M_grouping = __nl_langinfo_l(__MON_GROUPING, __cloc);
	  _M_positive_sign = __nl_langinfo_l(__POSITIVE_SIGN, __cloc);
	  _M_negative_sign = __nl_langinfo_l(__NEGATIVE_SIGN, __cloc);
	  if (intl)
	    {
	      _M_curr_symbol = __nl_langinfo_l(__INT_CURR_SYMBOL, __cloc);
	      _M_frac_digits = *(__nl_langinfo_l(__INT_FRAC_DIGITS, __cloc));
	      char __ppreceeds = *(__nl_langinfo_l(__INT_P_CS_PRECEDES, 
						   __cloc));
	      char __pspace = *(__nl_langinfo_l(__INT_P_SEP_BY_SPACE, __cloc));
	      char __pposn = *(__nl_langinfo_l(__INT_P_SIGN_POSN, __cloc));
	      _M_pos_format = _S_construct_pattern(__ppreceeds, __pspace, 
						   __pposn);
	      char __npreceeds = *(__nl_langinfo_l(__INT_N_CS_PRECEDES, 
						   __cloc));
	      char __nspace = *(__nl_langinfo_l(__INT_N_SEP_BY_SPACE, __cloc));
	      char __nposn = *(__nl_langinfo_l(__INT_N_SIGN_POSN, __cloc));
	      _M_neg_format = _S_construct_pattern(__npreceeds, __nspace, 
						   __nposn);
	    }
	  else
	    {
	      _M_curr_symbol = __nl_langinfo_l(__CURRENCY_SYMBOL, __cloc);
	      _M_frac_digits = *(__nl_langinfo_l(__FRAC_DIGITS, __cloc));
	      char __ppreceeds = *(__nl_langinfo_l(__P_CS_PRECEDES, __cloc));
	      char __pspace = *(__nl_langinfo_l(__P_SEP_BY_SPACE, __cloc));
	      char __pposn = *(__nl_langinfo_l(__P_SIGN_POSN, __cloc));
	      _M_pos_format = _S_construct_pattern(__ppreceeds, __pspace, 
						   __pposn);
	      char __npreceeds = *(__nl_langinfo_l(__N_CS_PRECEDES, __cloc));
	      char __nspace = *(__nl_langinfo_l(__N_SEP_BY_SPACE, __cloc));
	      char __nposn = *(__nl_langinfo_l(__N_SIGN_POSN, __cloc));
	      _M_neg_format = _S_construct_pattern(__npreceeds, __nspace, 
						   __nposn);
	    }
	}
    }

#ifdef _GLIBCPP_USE_WCHAR_T
  template<> 
    void
    moneypunct<wchar_t>::_M_initialize_moneypunct(__c_locale /*__cloc*/)
    {
      // XXX implement
      // "C" locale
      _M_decimal_point = L'.';
      _M_thousands_sep = L',';
      _M_grouping = "";
      _M_curr_symbol = string_type();
      _M_positive_sign = string_type();
      _M_negative_sign = string_type();
      _M_frac_digits = 0;
      _M_pos_format = money_base::_S_default_pattern;
      _M_neg_format = money_base::_S_default_pattern;
    }
#endif
}  // namespace std