1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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 <bits/atomicity.h>
39 // Definitions for static const data members of locale.
40 const locale::category locale::none;
41 const locale::category locale::ctype;
42 const locale::category locale::numeric;
43 const locale::category locale::collate;
44 const locale::category locale::time;
45 const locale::category locale::monetary;
46 const locale::category locale::messages;
47 const locale::category locale::all;
49 // These are no longer exported.
50 locale::_Impl* locale::_S_classic;
51 locale::_Impl* locale::_S_global;
52 const size_t locale::_S_categories_size;
55 __gthread_once_t locale::_S_once = __GTHREAD_ONCE_INIT;
58 locale::locale(const locale& __other) throw()
59 { (_M_impl = __other._M_impl)->_M_add_reference(); }
61 // This is used to initialize global and classic locales, and
62 // assumes that the _Impl objects are constructed correctly.
63 // The lack of a reference increment is intentional.
64 locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
67 locale::~locale() throw()
68 { _M_impl->_M_remove_reference(); }
71 locale::operator==(const locale& __rhs) const throw()
73 // Deal first with the common cases, fast to process: refcopies,
74 // unnamed (i.e., !_M_names[0]), "simple" (!_M_names[1] => all the
75 // categories same name, i.e., _M_names[0]). Otherwise fall back
76 // to the general locale::name().
78 if (_M_impl == __rhs._M_impl)
80 else if (!_M_impl->_M_names[0] || !__rhs._M_impl->_M_names[0]
81 || std::strcmp(_M_impl->_M_names[0],
82 __rhs._M_impl->_M_names[0]) != 0)
84 else if (!_M_impl->_M_names[1] && !__rhs._M_impl->_M_names[1])
87 __ret = this->name() == __rhs.name();
92 locale::operator=(const locale& __other) throw()
94 __other._M_impl->_M_add_reference();
95 _M_impl->_M_remove_reference();
96 _M_impl = __other._M_impl;
104 if (!_M_impl->_M_names[0])
106 else if (_M_impl->_M_check_same_name())
107 __ret = _M_impl->_M_names[0];
111 __ret += _S_categories[0];
113 __ret += _M_impl->_M_names[0];
114 for (size_t __i = 1; __i < _S_categories_size; ++__i)
117 __ret += _S_categories[__i];
119 __ret += _M_impl->_M_names[__i];
126 locale::_S_normalize_category(category __cat)
129 if (__cat == none || (__cat & all) && !(__cat & ~all))
133 // NB: May be a C-style "LC_ALL" category; convert.
151 #ifdef _GLIBCXX_HAVE_LC_MESSAGES
160 __throw_runtime_error(__N("locale::_S_normalize_category "
161 "category not found"));
168 __c_locale locale::facet::_S_c_locale;
170 const char locale::facet::_S_c_name[2] = "C";
173 __gthread_once_t locale::facet::_S_once = __GTHREAD_ONCE_INIT;
177 locale::facet::_S_initialize_once()
179 // Initialize the underlying locale model.
180 _S_create_c_locale(_S_c_locale, _S_c_name);
184 locale::facet::_S_get_c_locale()
187 if (__gthread_active_p())
188 __gthread_once(&_S_once, _S_initialize_once);
193 _S_initialize_once();
199 locale::facet::_S_get_c_name()
200 { return _S_c_name; }
210 for (size_t __i = 0; __i < _M_facets_size; ++__i)
212 _M_facets[__i]->_M_remove_reference();
216 for (size_t __i = 0; __i < _M_facets_size; ++__i)
218 _M_caches[__i]->_M_remove_reference();
222 for (size_t __i = 0; __i < _S_categories_size; ++__i)
223 delete [] _M_names[__i];
227 // Clone existing _Impl object.
229 _Impl(const _Impl& __imp, size_t __refs)
230 : _M_refcount(__refs), _M_facets_size(__imp._M_facets_size)
232 _M_facets = _M_caches = 0;
236 _M_facets = new const facet*[_M_facets_size];
237 for (size_t __i = 0; __i < _M_facets_size; ++__i)
239 _M_facets[__i] = __imp._M_facets[__i];
241 _M_facets[__i]->_M_add_reference();
243 _M_caches = new const facet*[_M_facets_size];
244 for (size_t __i = 0; __i < _M_facets_size; ++__i)
246 _M_caches[__i] = __imp._M_caches[__i];
248 _M_caches[__i]->_M_add_reference();
250 _M_names = new char*[_S_categories_size];
251 for (size_t __i = 0; __i < _S_categories_size; ++__i)
254 // Name the categories.
255 for (size_t __i = 0; (__i < _S_categories_size
256 && __imp._M_names[__i]); ++__i)
258 const size_t __len = std::strlen(__imp._M_names[__i]) + 1;
259 _M_names[__i] = new char[__len];
260 std::memcpy(_M_names[__i], __imp._M_names[__i], __len);
266 __throw_exception_again;
272 _M_replace_category(const _Impl* __imp, const locale::id* const* __idpp)
274 for (; *__idpp; ++__idpp)
275 _M_replace_facet(__imp, *__idpp);
280 _M_replace_facet(const _Impl* __imp, const locale::id* __idp)
282 size_t __index = __idp->_M_id();
283 if ((__index > (__imp->_M_facets_size - 1)) || !__imp->_M_facets[__index])
284 __throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
285 _M_install_facet(__idp, __imp->_M_facets[__index]);
290 _M_install_facet(const locale::id* __idp, const facet* __fp)
294 size_t __index = __idp->_M_id();
296 // Check size of facet vector to ensure adequate room.
297 if (__index > _M_facets_size - 1)
299 const size_t __new_size = __index + 4;
302 const facet** __oldf = _M_facets;
303 const facet** __newf;
304 __newf = new const facet*[__new_size];
305 for (size_t __i = 0; __i < _M_facets_size; ++__i)
306 __newf[__i] = _M_facets[__i];
307 for (size_t __i2 = _M_facets_size; __i2 < __new_size; ++__i2)
311 const facet** __oldc = _M_caches;
312 const facet** __newc;
315 __newc = new const facet*[__new_size];
320 __throw_exception_again;
322 for (size_t __i = 0; __i < _M_facets_size; ++__i)
323 __newc[__i] = _M_caches[__i];
324 for (size_t __i2 = _M_facets_size; __i2 < __new_size; ++__i2)
327 _M_facets_size = __new_size;
334 __fp->_M_add_reference();
335 const facet*& __fpr = _M_facets[__index];
338 // Replacing an existing facet. Order matters.
339 __fpr->_M_remove_reference();
344 // Installing a newly created facet into an empty
345 // _M_facets container, say a newly-constructed,
346 // swanky-fresh _Impl.
347 _M_facets[__index] = __fp;
350 // Ideally, it would be nice to only remove the caches that
351 // are now incorrect. However, some of the caches depend on
352 // multiple facets, and we only know about one facet
353 // here. It's no great loss: the first use of the new facet
354 // will create a new, correctly cached facet anyway.
355 for (size_t __i = 0; __i < _M_facets_size; ++__i)
357 const facet* __cpr = _M_caches[__i];
360 __cpr->_M_remove_reference();
368 // Definitions for static const data members of locale::id
369 _Atomic_word locale::id::_S_refcount; // init'd to 0 by linker
372 locale::id::_M_id() const
375 _M_index = 1 + __gnu_cxx::__exchange_and_add(&_S_refcount, 1);