1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2 // 2006, 2007, 2008, 2009, 2010
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/>.
27 #include <cstdlib> // For getenv
29 #include <cwctype> // For towupper, etc.
31 #include <ext/concurrence.h>
36 get_locale_cache_mutex()
38 static __gnu_cxx::__mutex locale_cache_mutex;
39 return locale_cache_mutex;
41 } // anonymous namespace
43 // XXX GLIBCXX_ABI Deprecated
44 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
45 # define _GLIBCXX_LOC_ID(mangled) extern std::locale::id mangled
46 _GLIBCXX_LOC_ID (_ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
47 _GLIBCXX_LOC_ID (_ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
48 _GLIBCXX_LOC_ID (_ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
49 _GLIBCXX_LOC_ID (_ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
50 # ifdef _GLIBCXX_USE_WCHAR_T
51 _GLIBCXX_LOC_ID (_ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
52 _GLIBCXX_LOC_ID (_ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
53 _GLIBCXX_LOC_ID (_ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
54 _GLIBCXX_LOC_ID (_ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
58 namespace std _GLIBCXX_VISIBILITY(default)
60 _GLIBCXX_BEGIN_NAMESPACE_VERSION
62 // Definitions for static const data members of locale.
63 const locale::category locale::none;
64 const locale::category locale::ctype;
65 const locale::category locale::numeric;
66 const locale::category locale::collate;
67 const locale::category locale::time;
68 const locale::category locale::monetary;
69 const locale::category locale::messages;
70 const locale::category locale::all;
72 // These are no longer exported.
73 locale::_Impl* locale::_S_classic;
74 locale::_Impl* locale::_S_global;
77 __gthread_once_t locale::_S_once = __GTHREAD_ONCE_INIT;
80 locale::locale(const locale& __other) throw()
81 : _M_impl(__other._M_impl)
82 { _M_impl->_M_add_reference(); }
84 // This is used to initialize global and classic locales, and
85 // assumes that the _Impl objects are constructed correctly.
86 // The lack of a reference increment is intentional.
87 locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
90 locale::~locale() throw()
91 { _M_impl->_M_remove_reference(); }
94 locale::operator==(const locale& __rhs) const throw()
96 // Deal first with the common cases, fast to process: refcopies,
97 // unnamed (i.e., !_M_names[0]), "simple" (!_M_names[1] => all the
98 // categories same name, i.e., _M_names[0]). Otherwise fall back
99 // to the general locale::name().
101 if (_M_impl == __rhs._M_impl)
103 else if (!_M_impl->_M_names[0] || !__rhs._M_impl->_M_names[0]
104 || std::strcmp(_M_impl->_M_names[0],
105 __rhs._M_impl->_M_names[0]) != 0)
107 else if (!_M_impl->_M_names[1] && !__rhs._M_impl->_M_names[1])
110 __ret = this->name() == __rhs.name();
115 locale::operator=(const locale& __other) throw()
117 __other._M_impl->_M_add_reference();
118 _M_impl->_M_remove_reference();
119 _M_impl = __other._M_impl;
127 if (!_M_impl->_M_names[0])
129 else if (_M_impl->_M_check_same_name())
130 __ret = _M_impl->_M_names[0];
134 __ret += _S_categories[0];
136 __ret += _M_impl->_M_names[0];
137 for (size_t __i = 1; __i < _S_categories_size; ++__i)
140 __ret += _S_categories[__i];
142 __ret += _M_impl->_M_names[__i];
149 locale::_S_normalize_category(category __cat)
152 if (__cat == none || ((__cat & all) && !(__cat & ~all)))
156 // NB: May be a C-style "LC_ALL" category; convert.
174 #ifdef _GLIBCXX_HAVE_LC_MESSAGES
183 __throw_runtime_error(__N("locale::_S_normalize_category "
184 "category not found"));
191 __c_locale locale::facet::_S_c_locale;
193 const char locale::facet::_S_c_name[2] = "C";
196 __gthread_once_t locale::facet::_S_once = __GTHREAD_ONCE_INIT;
200 locale::facet::_S_initialize_once()
202 // Initialize the underlying locale model.
203 _S_create_c_locale(_S_c_locale, _S_c_name);
207 locale::facet::_S_get_c_locale()
210 if (__gthread_active_p())
211 __gthread_once(&_S_once, _S_initialize_once);
216 _S_initialize_once();
222 locale::facet::_S_get_c_name() throw()
223 { return _S_c_name; }
233 for (size_t __i = 0; __i < _M_facets_size; ++__i)
235 _M_facets[__i]->_M_remove_reference();
239 for (size_t __i = 0; __i < _M_facets_size; ++__i)
241 _M_caches[__i]->_M_remove_reference();
245 for (size_t __i = 0; __i < _S_categories_size; ++__i)
246 delete [] _M_names[__i];
250 // Clone existing _Impl object.
252 _Impl(const _Impl& __imp, size_t __refs)
253 : _M_refcount(__refs), _M_facets(0), _M_facets_size(__imp._M_facets_size),
254 _M_caches(0), _M_names(0)
258 _M_facets = new const facet*[_M_facets_size];
259 for (size_t __i = 0; __i < _M_facets_size; ++__i)
261 _M_facets[__i] = __imp._M_facets[__i];
263 _M_facets[__i]->_M_add_reference();
265 _M_caches = new const facet*[_M_facets_size];
266 for (size_t __j = 0; __j < _M_facets_size; ++__j)
268 _M_caches[__j] = __imp._M_caches[__j];
270 _M_caches[__j]->_M_add_reference();
272 _M_names = new char*[_S_categories_size];
273 for (size_t __k = 0; __k < _S_categories_size; ++__k)
276 // Name the categories.
277 for (size_t __l = 0; (__l < _S_categories_size
278 && __imp._M_names[__l]); ++__l)
280 const size_t __len = std::strlen(__imp._M_names[__l]) + 1;
281 _M_names[__l] = new char[__len];
282 std::memcpy(_M_names[__l], __imp._M_names[__l], __len);
288 __throw_exception_again;
294 _M_replace_category(const _Impl* __imp,
295 const locale::id* const* __idpp)
297 for (; *__idpp; ++__idpp)
298 _M_replace_facet(__imp, *__idpp);
303 _M_replace_facet(const _Impl* __imp, const locale::id* __idp)
305 size_t __index = __idp->_M_id();
306 if ((__index > (__imp->_M_facets_size - 1))
307 || !__imp->_M_facets[__index])
308 __throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
309 _M_install_facet(__idp, __imp->_M_facets[__index]);
314 _M_install_facet(const locale::id* __idp, const facet* __fp)
318 size_t __index = __idp->_M_id();
320 // Check size of facet vector to ensure adequate room.
321 if (__index > _M_facets_size - 1)
323 const size_t __new_size = __index + 4;
326 const facet** __oldf = _M_facets;
327 const facet** __newf;
328 __newf = new const facet*[__new_size];
329 for (size_t __i = 0; __i < _M_facets_size; ++__i)
330 __newf[__i] = _M_facets[__i];
331 for (size_t __l = _M_facets_size; __l < __new_size; ++__l)
335 const facet** __oldc = _M_caches;
336 const facet** __newc;
339 __newc = new const facet*[__new_size];
344 __throw_exception_again;
346 for (size_t __j = 0; __j < _M_facets_size; ++__j)
347 __newc[__j] = _M_caches[__j];
348 for (size_t __k = _M_facets_size; __k < __new_size; ++__k)
351 _M_facets_size = __new_size;
358 __fp->_M_add_reference();
359 const facet*& __fpr = _M_facets[__index];
362 // Replacing an existing facet. Order matters.
363 __fpr->_M_remove_reference();
368 // Installing a newly created facet into an empty
369 // _M_facets container, say a newly-constructed,
370 // swanky-fresh _Impl.
371 _M_facets[__index] = __fp;
374 // Ideally, it would be nice to only remove the caches that
375 // are now incorrect. However, some of the caches depend on
376 // multiple facets, and we only know about one facet
377 // here. It's no great loss: the first use of the new facet
378 // will create a new, correctly cached facet anyway.
379 for (size_t __i = 0; __i < _M_facets_size; ++__i)
381 const facet* __cpr = _M_caches[__i];
384 __cpr->_M_remove_reference();
393 _M_install_cache(const facet* __cache, size_t __index)
395 __gnu_cxx::__scoped_lock sentry(get_locale_cache_mutex());
396 if (_M_caches[__index] != 0)
398 // Some other thread got in first.
403 __cache->_M_add_reference();
404 _M_caches[__index] = __cache;
409 // Definitions for static const data members of locale::id
410 _Atomic_word locale::id::_S_refcount; // init'd to 0 by linker
413 locale::id::_M_id() const throw()
417 // XXX GLIBCXX_ABI Deprecated
418 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
420 # define _GLIBCXX_SYNC_ID(facet, mangled) \
421 if (this == &::mangled) \
423 _GLIBCXX_SYNC_ID (num_get<char>, _ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
424 _GLIBCXX_SYNC_ID (num_put<char>, _ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
425 _GLIBCXX_SYNC_ID (money_get<char>, _ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
426 _GLIBCXX_SYNC_ID (money_put<char>, _ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
427 # ifdef _GLIBCXX_USE_WCHAR_T
428 _GLIBCXX_SYNC_ID (num_get<wchar_t>, _ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
429 _GLIBCXX_SYNC_ID (num_put<wchar_t>, _ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
430 _GLIBCXX_SYNC_ID (money_get<wchar_t>, _ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
431 _GLIBCXX_SYNC_ID (money_put<wchar_t>, _ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
434 _M_index = 1 + f->_M_id();
437 _M_index = 1 + __gnu_cxx::__exchange_and_add_dispatch(&_S_refcount,
443 _GLIBCXX_END_NAMESPACE_VERSION