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
153