1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2 // 2006, 2007, 2008, 2009
3 // Free Software Foundation, Inc.
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)
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.
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.
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/>.
30 _GLIBCXX_BEGIN_NAMESPACE(std)
32 using namespace __gnu_cxx;
34 locale::locale(const char* __s) : _M_impl(0)
39 if (std::strcmp(__s, "C") == 0 || std::strcmp(__s, "POSIX") == 0)
40 (_M_impl = _S_classic)->_M_add_reference();
41 else if (std::strcmp(__s, "") != 0)
42 _M_impl = new _Impl(__s, 1);
45 // Get it from the environment.
46 char* __env = std::getenv("LC_ALL");
47 // If LC_ALL is set we are done.
48 if (__env && std::strcmp(__env, "") != 0)
50 if (std::strcmp(__env, "C") == 0
51 || std::strcmp(__env, "POSIX") == 0)
52 (_M_impl = _S_classic)->_M_add_reference();
54 _M_impl = new _Impl(__env, 1);
58 // LANG may set a default different from "C".
60 __env = std::getenv("LANG");
61 if (!__env || std::strcmp(__env, "") == 0
62 || std::strcmp(__env, "C") == 0
63 || std::strcmp(__env, "POSIX") == 0)
68 // Scan the categories looking for the first one
69 // different from LANG.
72 for (; __i < _S_categories_size; ++__i)
74 __env = std::getenv(_S_categories[__i]);
75 if (__env && std::strcmp(__env, "") != 0
76 && std::strcmp(__env, "C") != 0
77 && std::strcmp(__env, "POSIX") != 0)
81 for (; __i < _S_categories_size; ++__i)
83 __env = std::getenv(_S_categories[__i]);
84 if (__env && std::strcmp(__env, "") != 0
89 // If one is found, build the complete string of
90 // the form LC_CTYPE=xxx;LC_NUMERIC=yyy; and so on...
91 if (__i < _S_categories_size)
95 for (size_t __j = 0; __j < __i; ++__j)
97 __str += _S_categories[__j];
102 __str += _S_categories[__i];
107 for (; __i < _S_categories_size; ++__i)
109 __env = std::getenv(_S_categories[__i]);
110 __str += _S_categories[__i];
111 if (!__env || std::strcmp(__env, "") == 0)
117 else if (std::strcmp(__env, "C") == 0
118 || std::strcmp(__env, "POSIX") == 0)
127 __str.erase(__str.end() - 1);
128 _M_impl = new _Impl(__str.c_str(), 1);
130 // ... otherwise either an additional instance of
131 // the "C" locale or LANG.
132 else if (__lang == "C")
133 (_M_impl = _S_classic)->_M_add_reference();
135 _M_impl = new _Impl(__lang.c_str(), 1);
140 __throw_runtime_error(__N("locale::locale NULL not valid"));
143 locale::locale(const locale& __base, const char* __s, category __cat)
146 // NB: There are complicated, yet more efficient ways to do
147 // this. Building up locales on a per-category way is tedious, so
148 // let's do it this way until people complain.
150 _M_coalesce(__base, __add, __cat);
153 locale::locale(const locale& __base, const locale& __add, category __cat)
155 { _M_coalesce(__base, __add, __cat); }
158 locale::_M_coalesce(const locale& __base, const locale& __add,
161 __cat = _S_normalize_category(__cat);
162 _M_impl = new _Impl(*__base._M_impl, 1);
165 { _M_impl->_M_replace_categories(__add._M_impl, __cat); }
168 _M_impl->_M_remove_reference();
169 __throw_exception_again;
173 // Construct named _Impl.
175 _Impl(const char* __s, size_t __refs)
176 : _M_refcount(__refs), _M_facets(0), _M_facets_size(_GLIBCXX_NUM_FACETS),
177 _M_caches(0), _M_names(0)
179 // Initialize the underlying locale model, which also checks to
180 // see if the given name is valid.
182 locale::facet::_S_create_c_locale(__cloc, __s);
186 _M_facets = new const facet*[_M_facets_size];
187 for (size_t __i = 0; __i < _M_facets_size; ++__i)
189 _M_caches = new const facet*[_M_facets_size];
190 for (size_t __j = 0; __j < _M_facets_size; ++__j)
192 _M_names = new char*[_S_categories_size];
193 for (size_t __k = 0; __k < _S_categories_size; ++__k)
196 // Name the categories.
197 const size_t __len = std::strlen(__s);
198 if (!std::memchr(__s, ';', __len))
200 _M_names[0] = new char[__len + 1];
201 std::memcpy(_M_names[0], __s, __len + 1);
205 const char* __end = __s;
206 for (size_t __i = 0; __i < _S_categories_size; ++__i)
208 const char* __beg = std::strchr(__end + 1, '=') + 1;
209 __end = std::strchr(__beg, ';');
212 _M_names[__i] = new char[__end - __beg + 1];
213 std::memcpy(_M_names[__i], __beg, __end - __beg);
214 _M_names[__i][__end - __beg] = '\0';
218 // Construct all standard facets and add them to _M_facets.
219 _M_init_facet(new std::ctype<char>(__cloc, 0, false));
220 _M_init_facet(new codecvt<char, char, mbstate_t>(__cloc));
221 _M_init_facet(new numpunct<char>(__cloc));
222 _M_init_facet(new num_get<char>);
223 _M_init_facet(new num_put<char>);
224 _M_init_facet(new std::collate<char>(__cloc));
225 _M_init_facet(new moneypunct<char, false>(__cloc, __s));
226 _M_init_facet(new moneypunct<char, true>(__cloc, __s));
227 _M_init_facet(new money_get<char>);
228 _M_init_facet(new money_put<char>);
229 _M_init_facet(new __timepunct<char>(__cloc, __s));
230 _M_init_facet(new time_get<char>);
231 _M_init_facet(new time_put<char>);
232 _M_init_facet(new std::messages<char>(__cloc, __s));
234 #ifdef _GLIBCXX_USE_WCHAR_T
235 _M_init_facet(new std::ctype<wchar_t>(__cloc));
236 _M_init_facet(new codecvt<wchar_t, char, mbstate_t>(__cloc));
237 _M_init_facet(new numpunct<wchar_t>(__cloc));
238 _M_init_facet(new num_get<wchar_t>);
239 _M_init_facet(new num_put<wchar_t>);
240 _M_init_facet(new std::collate<wchar_t>(__cloc));
241 _M_init_facet(new moneypunct<wchar_t, false>(__cloc, __s));
242 _M_init_facet(new moneypunct<wchar_t, true>(__cloc, __s));
243 _M_init_facet(new money_get<wchar_t>);
244 _M_init_facet(new money_put<wchar_t>);
245 _M_init_facet(new __timepunct<wchar_t>(__cloc, __s));
246 _M_init_facet(new time_get<wchar_t>);
247 _M_init_facet(new time_put<wchar_t>);
248 _M_init_facet(new std::messages<wchar_t>(__cloc, __s));
250 locale::facet::_S_destroy_c_locale(__cloc);
254 locale::facet::_S_destroy_c_locale(__cloc);
256 __throw_exception_again;
262 _M_replace_categories(const _Impl* __imp, category __cat)
265 if (!_M_names[0] || !__imp->_M_names[0])
269 delete [] _M_names[0];
270 _M_names[0] = 0; // Unnamed.
273 for (size_t __ix = 0; __ix < _S_categories_size; ++__ix, __mask <<= 1)
276 // Need to replace entry in _M_facets with other locale's info.
277 _M_replace_category(__imp, _S_facet_categories[__ix]);
284 // A full set of _M_names must be prepared, all identical
285 // to _M_names[0] to begin with. Then, below, a few will
286 // be replaced by the corresponding __imp->_M_names. I.e.,
287 // not a "simple" locale anymore (see locale::operator==).
288 const size_t __len = std::strlen(_M_names[0]) + 1;
289 for (size_t __i = 1; __i < _S_categories_size; ++__i)
291 _M_names[__i] = new char[__len];
292 std::memcpy(_M_names[__i], _M_names[0], __len);
296 for (size_t __ix = 0; __ix < _S_categories_size; ++__ix, __mask <<= 1)
300 // Need to replace entry in _M_facets with other locale's info.
301 _M_replace_category(__imp, _S_facet_categories[__ix]);
303 // FIXME: Hack for libstdc++/29217: the numerical encodings
304 // of the time and collate categories are swapped vs the
305 // order of the names in locale::_S_categories. We'd like to
306 // adjust the former (the latter is dictated by compatibility
307 // with glibc) but we can't for binary compatibility.
308 size_t __ix_name = __ix;
309 if (__ix == 2 || __ix == 3)
310 __ix_name = 5 - __ix;
312 char* __src = __imp->_M_names[__ix_name] ?
313 __imp->_M_names[__ix_name] : __imp->_M_names[0];
314 const size_t __len = std::strlen(__src) + 1;
315 char* __new = new char[__len];
316 std::memcpy(__new, __src, __len);
317 delete [] _M_names[__ix_name];
318 _M_names[__ix_name] = __new;
324 _GLIBCXX_END_NAMESPACE