1 // std::numpunct implementation details, DragonFly version -*- C++ -*-
2 
3 // Copyright (C) 2015-2019 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19 
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23 // <http://www.gnu.org/licenses/>.
24 
25 //
26 // ISO C++ 14882: 22.2.3.1.2  numpunct virtual functions
27 //
28 
29 // Written by Benjamin Kosnik <bkoz@redhat.com>
30 // Modified for DragonFly by John Marino <gnugcc@marino.st>
31 
32 #include <locale>
33 #include <cstring>
34 #include <xlocale.h>
35 
36 namespace std _GLIBCXX_VISIBILITY(default)
37 {
38 _GLIBCXX_BEGIN_NAMESPACE_VERSION
39 
40   template<>
41     void
_M_initialize_numpunct(__c_locale __cloc)42     numpunct<char>::_M_initialize_numpunct(__c_locale __cloc)
43     {
44       if (!_M_data)
45 	_M_data = new __numpunct_cache<char>;
46 
47       if (!__cloc)
48 	{
49 	  // "C" locale
50 	  _M_data->_M_grouping = "";
51 	  _M_data->_M_grouping_size = 0;
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 
60 	  for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
61 	    _M_data->_M_atoms_in[__j] = __num_base::_S_atoms_in[__j];
62 	}
63       else
64 	{
65 	  // Named locale.
66 	  lconv* lc = localeconv_l((locale_t) __cloc);
67 
68 	  // Decimal point should always be defined, but check null anyway
69 	  if (lc->decimal_point == NULL)
70 	    {
71 	      // Not defined, so use "C" locale default
72 	      _M_data->_M_decimal_point = '.';
73 	    }
74 	  else
75 	    {
76 	      _M_data->_M_decimal_point = lc->decimal_point[0];
77 	    }
78 	  // Check for NULL, which implies no grouping.
79 	  if (lc->thousands_sep == NULL || lc->thousands_sep[0] == '\0')
80 	    {
81 	      // Like in "C" locale.
82 	      _M_data->_M_grouping = "";
83 	      _M_data->_M_grouping_size = 0;
84 	      _M_data->_M_use_grouping = false;
85 	      _M_data->_M_thousands_sep = ',';
86 	    }
87 	  else
88 	    {
89 	      _M_data->_M_thousands_sep = lc->thousands_sep[0];
90 
91 	      const char* __src = lc->grouping;
92 	      const size_t __len = strlen(__src);
93 	      if (__len)
94 		{
95 		  __try
96 		    {
97 		      char* __dst = new char[__len + 1];
98 		      memcpy(__dst, __src, __len + 1);
99 		      _M_data->_M_grouping = __dst;
100 		      _M_data->_M_use_grouping = true;
101 		    }
102 		  __catch(...)
103 		    {
104 		      delete _M_data;
105 		      _M_data = 0;
106 		      __throw_exception_again;
107 		    }
108 		}
109 	      else
110 		{
111 		  _M_data->_M_grouping = "";
112 		  _M_data->_M_use_grouping = false;
113 		}
114 	      _M_data->_M_grouping_size = __len;
115 	    }
116 	}
117 
118       // NB: There is no way to extact this info from posix locales.
119       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
120       _M_data->_M_truename = "true";
121       _M_data->_M_truename_size = 4;
122       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
123       _M_data->_M_falsename = "false";
124       _M_data->_M_falsename_size = 5;
125     }
126 
127   template<>
~numpunct()128     numpunct<char>::~numpunct()
129     {
130       if (_M_data->_M_grouping_size)
131 	delete [] _M_data->_M_grouping;
132       delete _M_data;
133     }
134 
135 #ifdef _GLIBCXX_USE_WCHAR_T
136   template<>
137     void
_M_initialize_numpunct(__c_locale __cloc)138     numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc)
139     {
140       if (!_M_data)
141 	_M_data = new __numpunct_cache<wchar_t>;
142 
143       if (!__cloc)
144 	{
145 	  // "C" locale
146 	  _M_data->_M_grouping = "";
147 	  _M_data->_M_grouping_size = 0;
148 	  _M_data->_M_use_grouping = false;
149 
150 	  _M_data->_M_decimal_point = L'.';
151 	  _M_data->_M_thousands_sep = L',';
152 
153 	  // Use ctype::widen code without the facet...
154 	  for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
155 	    _M_data->_M_atoms_out[__i] =
156 	      static_cast<wchar_t>(__num_base::_S_atoms_out[__i]);
157 
158 	  for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
159 	    _M_data->_M_atoms_in[__j] =
160 	      static_cast<wchar_t>(__num_base::_S_atoms_in[__j]);
161 	}
162       else
163 	{
164 	  // Named locale.
165 	  lconv* lc = localeconv_l((locale_t) __cloc);
166 
167 	  // Decimal point should always be defined, but check null anyway
168 	  if (lc->decimal_point == NULL)
169 	    {
170 	      // Not defined, so use "C" locale default
171 	      _M_data->_M_decimal_point = L'.';
172 	    }
173 	  else
174 	    {
175 	      _M_data->_M_decimal_point = (wchar_t)lc->decimal_point[0];
176 	    }
177 	  // Check for NULL, which implies no grouping.
178 	  if (lc->thousands_sep == NULL || lc->thousands_sep[0] == '\0')
179 	    {
180 	      // Like in "C" locale.
181 	      _M_data->_M_grouping = "";
182 	      _M_data->_M_grouping_size = 0;
183 	      _M_data->_M_use_grouping = false;
184 	      _M_data->_M_thousands_sep = L',';
185 	    }
186 	  else
187 	    {
188 	      _M_data->_M_thousands_sep = (wchar_t)lc->thousands_sep[0];
189 
190   	      const char* __src = lc->grouping;
191 	      const size_t __len = strlen(__src);
192 	      if (__len)
193 		{
194 		  __try
195 		    {
196 		      char* __dst = new char[__len + 1];
197 		      memcpy(__dst, __src, __len + 1);
198 		      _M_data->_M_grouping = __dst;
199 		    }
200 		  __catch(...)
201 		    {
202 		      delete _M_data;
203 		      _M_data = 0;
204 		      __throw_exception_again;
205 		    }
206 		}
207 	      else
208 		{
209 		  _M_data->_M_grouping = "";
210 		  _M_data->_M_use_grouping = false;
211 		}
212 	      _M_data->_M_grouping_size = __len;
213 	    }
214 	}
215 
216       // NB: There is no way to extact this info from posix locales.
217       // _M_truename = __nl_langinfo_l(YESSTR, __cloc);
218       _M_data->_M_truename = L"true";
219       _M_data->_M_truename_size = 4;
220       // _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
221       _M_data->_M_falsename = L"false";
222       _M_data->_M_falsename_size = 5;
223     }
224 
225   template<>
~numpunct()226     numpunct<wchar_t>::~numpunct()
227     {
228       if (_M_data->_M_grouping_size)
229 	delete [] _M_data->_M_grouping;
230       delete _M_data;
231     }
232  #endif
233 
234 _GLIBCXX_END_NAMESPACE_VERSION
235 } // namespace
236