1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
2 // Free Software Foundation, Inc.
4 // This file is part of the GNU ISO C++ Library. This library is free
5 // software; you can redistribute it and/or modify it under the
6 // terms of the GNU General Public License as published by the
7 // Free Software Foundation; either version 2, or (at your option)
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License along
16 // with this library; see the file COPYING. If not, write to the Free
17 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
20 // As a special exception, you may use this file as part of a free software
21 // library without restriction. Specifically, if other files instantiate
22 // templates or use macros or inline functions from this file, or you compile
23 // this file and link it with other files to produce an executable, this
24 // file does not by itself cause the resulting executable to be covered by
25 // the GNU General Public License. This exception does not however
26 // invalidate any other reasons why the executable file might be covered by
27 // the GNU General Public License.
31 #include <cstdlib> // For getenv
33 #include <cwctype> // For towupper, etc.
35 #include <ext/concurrence.h>
39 __gnu_cxx::__mutex locale_cache_mutex;
40 } // anonymous namespace
42 // XXX GLIBCXX_ABI Deprecated
43 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
44 # define _GLIBCXX_LOC_ID(mangled) extern std::locale::id mangled
45 _GLIBCXX_LOC_ID (_ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
46 _GLIBCXX_LOC_ID (_ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
47 _GLIBCXX_LOC_ID (_ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
48 _GLIBCXX_LOC_ID (_ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
49 # ifdef _GLIBCXX_USE_WCHAR_T
50 _GLIBCXX_LOC_ID (_ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
51 _GLIBCXX_LOC_ID (_ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
52 _GLIBCXX_LOC_ID (_ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
53 _GLIBCXX_LOC_ID (_ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
57 _GLIBCXX_BEGIN_NAMESPACE(std)
59 // Definitions for static const data members of locale.
60 const locale::category locale::none;
61 const locale::category locale::ctype;
62 const locale::category locale::numeric;
63 const locale::category locale::collate;
64 const locale::category locale::time;
65 const locale::category locale::monetary;
66 const locale::category locale::messages;
67 const locale::category locale::all;
69 // These are no longer exported.
70 locale::_Impl* locale::_S_classic;
71 locale::_Impl* locale::_S_global;
74 __gthread_once_t locale::_S_once = __GTHREAD_ONCE_INIT;
77 locale::locale(const locale& __other) throw()
78 : _M_impl(__other._M_impl)
79 { _M_impl->_M_add_reference(); }
81 // This is used to initialize global and classic locales, and
82 // assumes that the _Impl objects are constructed correctly.
83 // The lack of a reference increment is intentional.
84 locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
87 locale::~locale() throw()
88 { _M_impl->_M_remove_reference(); }
91 locale::operator==(const locale& __rhs) const throw()
93 // Deal first with the common cases, fast to process: refcopies,
94 // unnamed (i.e., !_M_names[0]), "simple" (!_M_names[1] => all the
95 // categories same name, i.e., _M_names[0]). Otherwise fall back
96 // to the general locale::name().
98 if (_M_impl == __rhs._M_impl)
100 else if (!_M_impl->_M_names[0] || !__rhs._M_impl->_M_names[0]
101 || std::strcmp(_M_impl->_M_names[0],
102 __rhs._M_impl->_M_names[0]) != 0)
104 else if (!_M_impl->_M_names[1] && !__rhs._M_impl->_M_names[1])
107 __ret = this->name() == __rhs.name();
112 locale::operator=(const locale& __other) throw()
114 __other._M_impl->_M_add_reference();
115 _M_impl->_M_remove_reference();
116 _M_impl = __other._M_impl;
124 if (!_M_impl->_M_names[0])
126 else if (_M_impl->_M_check_same_name())
127 __ret = _M_impl->_M_names[0];
131 __ret += _S_categories[0];
133 __ret += _M_impl->_M_names[0];
134 for (size_t __i = 1; __i < _S_categories_size; ++__i)
137 __ret += _S_categories[__i];
139 __ret += _M_impl->_M_names[__i];
146 locale::_S_normalize_category(category __cat)
149 if (__cat == none || ((__cat & all) && !(__cat & ~all)))
153 // NB: May be a C-style "LC_ALL" category; convert.
171 #ifdef _GLIBCXX_HAVE_LC_MESSAGES
180 __throw_runtime_error(__N("locale::_S_normalize_category "
181 "category not found"));
188 __c_locale locale::facet::_S_c_locale;
190 const char locale::facet::_S_c_name[2] = "C";
193 __gthread_once_t locale::facet::_S_once = __GTHREAD_ONCE_INIT;
197 locale::facet::_S_initialize_once()
199 // Initialize the underlying locale model.
200 _S_create_c_locale(_S_c_locale, _S_c_name);
204 locale::facet::_S_get_c_locale()
207 if (__gthread_active_p())
208 __gthread_once(&_S_once, _S_initialize_once);
213 _S_initialize_once();
219 locale::facet::_S_get_c_name()
220 { return _S_c_name; }
230 for (size_t __i = 0; __i < _M_facets_size; ++__i)
232 _M_facets[__i]->_M_remove_reference();
236 for (size_t __i = 0; __i < _M_facets_size; ++__i)
238 _M_caches[__i]->_M_remove_reference();
242 for (size_t __i = 0; __i < _S_categories_size; ++__i)
243 delete [] _M_names[__i];
247 // Clone existing _Impl object.
249 _Impl(const _Impl& __imp, size_t __refs)
250 : _M_refcount(__refs), _M_facets(0), _M_facets_size(__imp._M_facets_size),
251 _M_caches(0), _M_names(0)
255 _M_facets = new const facet*[_M_facets_size];
256 for (size_t __i = 0; __i < _M_facets_size; ++__i)
258 _M_facets[__i] = __imp._M_facets[__i];
260 _M_facets[__i]->_M_add_reference();
262 _M_caches = new const facet*[_M_facets_size];
263 for (size_t __j = 0; __j < _M_facets_size; ++__j)
265 _M_caches[__j] = __imp._M_caches[__j];
267 _M_caches[__j]->_M_add_reference();
269 _M_names = new char*[_S_categories_size];
270 for (size_t __k = 0; __k < _S_categories_size; ++__k)
273 // Name the categories.
274 for (size_t __l = 0; (__l < _S_categories_size
275 && __imp._M_names[__l]); ++__l)
277 const size_t __len = std::strlen(__imp._M_names[__l]) + 1;
278 _M_names[__l] = new char[__len];
279 std::memcpy(_M_names[__l], __imp._M_names[__l], __len);
285 __throw_exception_again;
291 _M_replace_category(const _Impl* __imp,
292 const locale::id* const* __idpp)
294 for (; *__idpp; ++__idpp)
295 _M_replace_facet(__imp, *__idpp);
300 _M_replace_facet(const _Impl* __imp, const locale::id* __idp)
302 size_t __index = __idp->_M_id();
303 if ((__index > (__imp->_M_facets_size - 1))
304 || !__imp->_M_facets[__index])
305 __throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
306 _M_install_facet(__idp, __imp->_M_facets[__index]);
311 _M_install_facet(const locale::id* __idp, const facet* __fp)
315 size_t __index = __idp->_M_id();
317 // Check size of facet vector to ensure adequate room.
318 if (__index > _M_facets_size - 1)
320 const size_t __new_size = __index + 4;
323 const facet** __oldf = _M_facets;
324 const facet** __newf;
325 __newf = new const facet*[__new_size];
326 for (size_t __i = 0; __i < _M_facets_size; ++__i)
327 __newf[__i] = _M_facets[__i];
328 for (size_t __l = _M_facets_size; __l < __new_size; ++__l)
332 const facet** __oldc = _M_caches;
333 const facet** __newc;
336 __newc = new const facet*[__new_size];
341 __throw_exception_again;
343 for (size_t __j = 0; __j < _M_facets_size; ++__j)
344 __newc[__j] = _M_caches[__j];
345 for (size_t __k = _M_facets_size; __k < __new_size; ++__k)
348 _M_facets_size = __new_size;
355 __fp->_M_add_reference();
356 const facet*& __fpr = _M_facets[__index];
359 // Replacing an existing facet. Order matters.
360 __fpr->_M_remove_reference();
365 // Installing a newly created facet into an empty
366 // _M_facets container, say a newly-constructed,
367 // swanky-fresh _Impl.
368 _M_facets[__index] = __fp;
371 // Ideally, it would be nice to only remove the caches that
372 // are now incorrect. However, some of the caches depend on
373 // multiple facets, and we only know about one facet
374 // here. It's no great loss: the first use of the new facet
375 // will create a new, correctly cached facet anyway.
376 for (size_t __i = 0; __i < _M_facets_size; ++__i)
378 const facet* __cpr = _M_caches[__i];
381 __cpr->_M_remove_reference();
390 _M_install_cache(const facet* __cache, size_t __index)
392 __gnu_cxx::__scoped_lock sentry(locale_cache_mutex);
393 if (_M_caches[__index] != 0)
395 // Some other thread got in first.
400 __cache->_M_add_reference();
401 _M_caches[__index] = __cache;
406 // Definitions for static const data members of locale::id
407 _Atomic_word locale::id::_S_refcount; // init'd to 0 by linker
410 locale::id::_M_id() const
414 // XXX GLIBCXX_ABI Deprecated
415 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
417 # define _GLIBCXX_SYNC_ID(facet, mangled) \
418 if (this == &::mangled) \
420 _GLIBCXX_SYNC_ID (num_get<char>, _ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
421 _GLIBCXX_SYNC_ID (num_put<char>, _ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
422 _GLIBCXX_SYNC_ID (money_get<char>, _ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE);
423 _GLIBCXX_SYNC_ID (money_put<char>, _ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE);
424 # ifdef _GLIBCXX_USE_WCHAR_T
425 _GLIBCXX_SYNC_ID (num_get<wchar_t>, _ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
426 _GLIBCXX_SYNC_ID (num_put<wchar_t>, _ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
427 _GLIBCXX_SYNC_ID (money_get<wchar_t>, _ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE);
428 _GLIBCXX_SYNC_ID (money_put<wchar_t>, _ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE);
431 _M_index = 1 + f->_M_id();
434 _M_index = 1 + __gnu_cxx::__exchange_and_add_dispatch(&_S_refcount,
440 _GLIBCXX_END_NAMESPACE