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/>.
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 _GLIBCXX_BEGIN_NAMESPACE(std)
60 // Definitions for static const data members of locale.
61 const locale::category locale::none;
62 const locale::category locale::ctype;
63 const locale::category locale::numeric;
64 const locale::category locale::collate;
65 const locale::category locale::time;
66 const locale::category locale::monetary;
67 const locale::category locale::messages;
68 const locale::category locale::all;
70 // These are no longer exported.
71 locale::_Impl* locale::_S_classic;
72 locale::_Impl* locale::_S_global;
75 __gthread_once_t locale::_S_once = __GTHREAD_ONCE_INIT;
78 locale::locale(const locale& __other) throw()
79 : _M_impl(__other._M_impl)
80 { _M_impl->_M_add_reference(); }
82 // This is used to initialize global and classic locales, and
83 // assumes that the _Impl objects are constructed correctly.
84 // The lack of a reference increment is intentional.
85 locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
88 locale::~locale() throw()
89 { _M_impl->_M_remove_reference(); }
92 locale::operator==(const locale& __rhs) const throw()
94 // Deal first with the common cases, fast to process: refcopies,
95 // unnamed (i.e., !_M_names[0]), "simple" (!_M_names[1] => all the
96 // categories same name, i.e., _M_names[0]). Otherwise fall back
97 // to the general locale::name().
99 if (_M_impl == __rhs._M_impl)
101 else if (!_M_impl->_M_names[0] || !__rhs._M_impl->_M_names[0]
102 || std::strcmp(_M_impl->_M_names[0],
103 __rhs._M_impl->_M_names[0]) != 0)
105 else if (!_M_impl->_M_names[1] && !__rhs._M_impl->_M_names[1])
108 __ret = this->name() == __rhs.name();
113 locale::operator=(const locale& __other) throw()
115 __other._M_impl->_M_add_reference();
116 _M_impl->_M_remove_reference();
117 _M_impl = __other._M_impl;
125 if (!_M_impl->_M_names[0])
127 else if (_M_impl->_M_check_same_name())
128 __ret = _M_impl->_M_names[0];
132 __ret += _S_categories[0];
134 __ret += _M_impl->_M_names[0];
135 for (size_t __i = 1; __i < _S_categories_size; ++__i)
138 __ret += _S_categories[__i];
140 __ret += _M_impl->_M_names[__i];
147 locale::_S_normalize_category(category __cat)
150 if (__cat == none || ((__cat & all) && !(__cat & ~all)))
154 // NB: May be a C-style "LC_ALL" category; convert.
172 #ifdef _GLIBCXX_HAVE_LC_MESSAGES
181 __throw_runtime_error(__N("locale::_S_normalize_category "
182 "category not found"));
189 __c_locale locale::facet::_S_c_locale;
191 const char locale::facet::_S_c_name[2] = "C";
194 __gthread_once_t locale::facet::_S_once = __GTHREAD_ONCE_INIT;
198 locale::facet::_S_initialize_once()
200 // Initialize the underlying locale model.
201 _S_create_c_locale(_S_c_locale, _S_c_name);
205 locale::facet::_S_get_c_locale()
208 if (__gthread_active_p())
209 __gthread_once(&_S_once, _S_initialize_once);
214 _S_initialize_once();
220 locale::facet::_S_get_c_name()
221 { return _S_c_name; }
231 for (size_t __i = 0; __i < _M_facets_size; ++__i)
233 _M_facets[__i]->_M_remove_reference();
237 for (size_t __i = 0; __i < _M_facets_size; ++__i)
239 _M_caches[__i]->_M_remove_reference();
243 for (size_t __i = 0; __i < _S_categories_size; ++__i)
244 delete [] _M_names[__i];
248 // Clone existing _Impl object.
250 _Impl(const _Impl& __imp, size_t __refs)
251 : _M_refcount(__refs), _M_facets(0), _M_facets_size(__imp._M_facets_size),
252 _M_caches(0), _M_names(0)
256 _M_facets = new const facet*[_M_facets_size];
257 for (size_t __i = 0; __i < _M_facets_size; ++__i)
259 _M_facets[__i] = __imp._M_facets[__i];
261 _M_facets[__i]->_M_add_reference();
263 _M_caches = new const facet*[_M_facets_size];
264 for (size_t __j = 0; __j < _M_facets_size; ++__j)
266 _M_caches[__j] = __imp._M_caches[__j];
268 _M_caches[__j]->_M_add_reference();
270 _M_names = new char*[_S_categories_size];
271 for (size_t __k = 0; __k < _S_categories_size; ++__k)
274 // Name the categories.
275 for (size_t __l = 0; (__l < _S_categories_size
276 && __imp._M_names[__l]); ++__l)
278 const size_t __len = std::strlen(__imp._M_names[__l]) + 1;
279 _M_names[__l] = new char[__len];
280 std::memcpy(_M_names[__l], __imp._M_names[__l], __len);
286 __throw_exception_again;
292 _M_replace_category(const _Impl* __imp,
293 const locale::id* const* __idpp)
295 for (; *__idpp; ++__idpp)
296 _M_replace_facet(__imp, *__idpp);
301 _M_replace_facet(const _Impl* __imp, const locale::id* __idp)
303 size_t __index = __idp->_M_id();
304 if ((__index > (__imp->_M_facets_size - 1))
305 || !__imp->_M_facets[__index])
306 __throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
307 _M_install_facet(__idp, __imp->_M_facets[__index]);
312 _M_install_facet(const locale::id* __idp, const facet* __fp)
316 size_t __index = __idp->_M_id();
318 // Check size of facet vector to ensure adequate room.
319 if (__index > _M_facets_size - 1)
321 const size_t __new_size = __index + 4;
324 const facet** __oldf = _M_facets;
325 const facet** __newf;
326 __newf = new const facet*[__new_size];
327 for (size_t __i = 0; __i < _M_facets_size; ++__i)
328 __newf[__i] = _M_facets[__i];
329 for (size_t __l = _M_facets_size; __l < __new_size; ++__l)
333 const facet** __oldc = _M_caches;
334 const facet** __newc;
337 __newc = new const facet*[__new_size];
342 __throw_exception_again;
344 for (size_t __j = 0; __j < _M_facets_size; ++__j)
345 __newc[__j] = _M_caches[__j];
346 for (size_t __k = _M_facets_size; __k < __new_size; ++__k)
349 _M_facets_size = __new_size;
356 __fp->_M_add_reference();
357 const facet*& __fpr = _M_facets[__index];
360 // Replacing an existing facet. Order matters.
361 __fpr->_M_remove_reference();
366 // Installing a newly created facet into an empty
367 // _M_facets container, say a newly-constructed,
368 // swanky-fresh _Impl.
369 _M_facets[__index] = __fp;
372 // Ideally, it would be nice to only remove the caches that
373 // are now incorrect. However, some of the caches depend on
374 // multiple facets, and we only know about one facet
375 // here. It's no great loss: the first use of the new facet
376 // will create a new, correctly cached facet anyway.
377 for (size_t __i = 0; __i < _M_facets_size; ++__i)
379 const facet* __cpr = _M_caches[__i];
382 __cpr->_M_remove_reference();
391 _M_install_cache(const facet* __cache, size_t __index)
393 __gnu_cxx::__scoped_lock sentry(get_locale_cache_mutex());
394 if (_M_caches[__index] != 0)
396 // Some other thread got in first.
401 __cache->_M_add_reference();
402 _M_caches[__index] = __cache;
407 // Definitions for static const data members of locale::id
408 _Atomic_word locale::id::_S_refcount; // init'd to 0 by linker
411 locale::id::_M_id() const
415 // XXX GLIBCXX_ABI Deprecated
416 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
418 # define _GLIBCXX_SYNC_ID(facet, mangled) \
419 if (this == &::mangled) \
421 _GLIBCXX_SYNC_ID (num_get<char>, _ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
422 _GLIBCXX_SYNC_ID (num_put<char>, _ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
423 _GLIBCXX_SYNC_ID (money_get<char>, _ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
424 _GLIBCXX_SYNC_ID (money_put<char>, _ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
425 # ifdef _GLIBCXX_USE_WCHAR_T
426 _GLIBCXX_SYNC_ID (num_get<wchar_t>, _ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
427 _GLIBCXX_SYNC_ID (num_put<wchar_t>, _ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
428 _GLIBCXX_SYNC_ID (money_get<wchar_t>, _ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
429 _GLIBCXX_SYNC_ID (money_put<wchar_t>, _ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
432 _M_index = 1 + f->_M_id();
435 _M_index = 1 + __gnu_cxx::__exchange_and_add_dispatch(&_S_refcount,
441 _GLIBCXX_END_NAMESPACE