1 // Copyright (C) 1997-2013 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // Under Section 7 of GPL version 3, you are granted additional
15 // permissions described in the GCC Runtime Library Exception, version
16 // 3.1, as published by the Free Software Foundation.
18 // You should have received a copy of the GNU General Public License and
19 // a copy of the GCC Runtime Library Exception along with this program;
20 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
21 // <http://www.gnu.org/licenses/>.
25 #include <cstdlib> // For getenv
27 #include <cwctype> // For towupper, etc.
29 #include <ext/concurrence.h>
34 get_locale_cache_mutex()
36 static __gnu_cxx::__mutex locale_cache_mutex
;
37 return locale_cache_mutex
;
39 } // anonymous namespace
41 // XXX GLIBCXX_ABI Deprecated
42 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
43 # define _GLIBCXX_LOC_ID(mangled) extern std::locale::id mangled
44 _GLIBCXX_LOC_ID (_ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
45 _GLIBCXX_LOC_ID (_ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
46 _GLIBCXX_LOC_ID (_ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
47 _GLIBCXX_LOC_ID (_ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
48 # ifdef _GLIBCXX_USE_WCHAR_T
49 _GLIBCXX_LOC_ID (_ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
50 _GLIBCXX_LOC_ID (_ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
51 _GLIBCXX_LOC_ID (_ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
52 _GLIBCXX_LOC_ID (_ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
56 namespace std
_GLIBCXX_VISIBILITY(default)
58 _GLIBCXX_BEGIN_NAMESPACE_VERSION
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() throw()
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 throw()
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_VERSION