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 <bits/atomicity.h>
36 #include <bits/concurrence.h>
40 // Mutex object for cache access.
41 static __glibcxx_mutex_define_initialized(locale_cache_mutex
);
44 // XXX GLIBCXX_ABI Deprecated
45 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
46 # define _GLIBCXX_LOC_ID(mangled) extern std::locale::id mangled
47 _GLIBCXX_LOC_ID (_ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
48 _GLIBCXX_LOC_ID (_ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
49 _GLIBCXX_LOC_ID (_ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
50 _GLIBCXX_LOC_ID (_ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
51 # ifdef _GLIBCXX_USE_WCHAR_T
52 _GLIBCXX_LOC_ID (_ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
53 _GLIBCXX_LOC_ID (_ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
54 _GLIBCXX_LOC_ID (_ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
55 _GLIBCXX_LOC_ID (_ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
59 _GLIBCXX_BEGIN_NAMESPACE(std
)
61 // Definitions for static const data members of locale.
62 const locale::category
locale::none
;
63 const locale::category
locale::ctype
;
64 const locale::category
locale::numeric
;
65 const locale::category
locale::collate
;
66 const locale::category
locale::time
;
67 const locale::category
locale::monetary
;
68 const locale::category
locale::messages
;
69 const locale::category
locale::all
;
71 // These are no longer exported.
72 locale::_Impl
* locale::_S_classic
;
73 locale::_Impl
* locale::_S_global
;
76 __gthread_once_t
locale::_S_once
= __GTHREAD_ONCE_INIT
;
79 locale::locale(const locale
& __other
) throw()
80 : _M_impl(__other
._M_impl
)
81 { _M_impl
->_M_add_reference(); }
83 // This is used to initialize global and classic locales, and
84 // assumes that the _Impl objects are constructed correctly.
85 // The lack of a reference increment is intentional.
86 locale::locale(_Impl
* __ip
) throw() : _M_impl(__ip
)
89 locale::~locale() throw()
90 { _M_impl
->_M_remove_reference(); }
93 locale::operator==(const locale
& __rhs
) const throw()
95 // Deal first with the common cases, fast to process: refcopies,
96 // unnamed (i.e., !_M_names[0]), "simple" (!_M_names[1] => all the
97 // categories same name, i.e., _M_names[0]). Otherwise fall back
98 // to the general locale::name().
100 if (_M_impl
== __rhs
._M_impl
)
102 else if (!_M_impl
->_M_names
[0] || !__rhs
._M_impl
->_M_names
[0]
103 || std::strcmp(_M_impl
->_M_names
[0],
104 __rhs
._M_impl
->_M_names
[0]) != 0)
106 else if (!_M_impl
->_M_names
[1] && !__rhs
._M_impl
->_M_names
[1])
109 __ret
= this->name() == __rhs
.name();
114 locale::operator=(const locale
& __other
) throw()
116 __other
._M_impl
->_M_add_reference();
117 _M_impl
->_M_remove_reference();
118 _M_impl
= __other
._M_impl
;
126 if (!_M_impl
->_M_names
[0])
128 else if (_M_impl
->_M_check_same_name())
129 __ret
= _M_impl
->_M_names
[0];
133 __ret
+= _S_categories
[0];
135 __ret
+= _M_impl
->_M_names
[0];
136 for (size_t __i
= 1; __i
< _S_categories_size
; ++__i
)
139 __ret
+= _S_categories
[__i
];
141 __ret
+= _M_impl
->_M_names
[__i
];
148 locale::_S_normalize_category(category __cat
)
151 if (__cat
== none
|| (__cat
& all
) && !(__cat
& ~all
))
155 // NB: May be a C-style "LC_ALL" category; convert.
173 #ifdef _GLIBCXX_HAVE_LC_MESSAGES
182 __throw_runtime_error(__N("locale::_S_normalize_category "
183 "category not found"));
190 __c_locale
locale::facet::_S_c_locale
;
192 const char locale::facet::_S_c_name
[2] = "C";
195 __gthread_once_t
locale::facet::_S_once
= __GTHREAD_ONCE_INIT
;
199 locale::facet::_S_initialize_once()
201 // Initialize the underlying locale model.
202 _S_create_c_locale(_S_c_locale
, _S_c_name
);
206 locale::facet::_S_get_c_locale()
209 if (__gthread_active_p())
210 __gthread_once(&_S_once
, _S_initialize_once
);
215 _S_initialize_once();
221 locale::facet::_S_get_c_name()
222 { return _S_c_name
; }
232 for (size_t __i
= 0; __i
< _M_facets_size
; ++__i
)
234 _M_facets
[__i
]->_M_remove_reference();
238 for (size_t __i
= 0; __i
< _M_facets_size
; ++__i
)
240 _M_caches
[__i
]->_M_remove_reference();
244 for (size_t __i
= 0; __i
< _S_categories_size
; ++__i
)
245 delete [] _M_names
[__i
];
249 // Clone existing _Impl object.
251 _Impl(const _Impl
& __imp
, size_t __refs
)
252 : _M_refcount(__refs
), _M_facets(0), _M_facets_size(__imp
._M_facets_size
),
253 _M_caches(0), _M_names(0)
257 _M_facets
= new const facet
*[_M_facets_size
];
258 for (size_t __i
= 0; __i
< _M_facets_size
; ++__i
)
260 _M_facets
[__i
] = __imp
._M_facets
[__i
];
262 _M_facets
[__i
]->_M_add_reference();
264 _M_caches
= new const facet
*[_M_facets_size
];
265 for (size_t __j
= 0; __j
< _M_facets_size
; ++__j
)
267 _M_caches
[__j
] = __imp
._M_caches
[__j
];
269 _M_caches
[__j
]->_M_add_reference();
271 _M_names
= new char*[_S_categories_size
];
272 for (size_t __k
= 0; __k
< _S_categories_size
; ++__k
)
275 // Name the categories.
276 for (size_t __l
= 0; (__l
< _S_categories_size
277 && __imp
._M_names
[__l
]); ++__l
)
279 const size_t __len
= std::strlen(__imp
._M_names
[__l
]) + 1;
280 _M_names
[__l
] = new char[__len
];
281 std::memcpy(_M_names
[__l
], __imp
._M_names
[__l
], __len
);
287 __throw_exception_again
;
293 _M_replace_category(const _Impl
* __imp
,
294 const locale::id
* const* __idpp
)
296 for (; *__idpp
; ++__idpp
)
297 _M_replace_facet(__imp
, *__idpp
);
302 _M_replace_facet(const _Impl
* __imp
, const locale::id
* __idp
)
304 size_t __index
= __idp
->_M_id();
305 if ((__index
> (__imp
->_M_facets_size
- 1))
306 || !__imp
->_M_facets
[__index
])
307 __throw_runtime_error(__N("locale::_Impl::_M_replace_facet"));
308 _M_install_facet(__idp
, __imp
->_M_facets
[__index
]);
313 _M_install_facet(const locale::id
* __idp
, const facet
* __fp
)
317 size_t __index
= __idp
->_M_id();
319 // Check size of facet vector to ensure adequate room.
320 if (__index
> _M_facets_size
- 1)
322 const size_t __new_size
= __index
+ 4;
325 const facet
** __oldf
= _M_facets
;
326 const facet
** __newf
;
327 __newf
= new const facet
*[__new_size
];
328 for (size_t __i
= 0; __i
< _M_facets_size
; ++__i
)
329 __newf
[__i
] = _M_facets
[__i
];
330 for (size_t __l
= _M_facets_size
; __l
< __new_size
; ++__l
)
334 const facet
** __oldc
= _M_caches
;
335 const facet
** __newc
;
338 __newc
= new const facet
*[__new_size
];
343 __throw_exception_again
;
345 for (size_t __j
= 0; __j
< _M_facets_size
; ++__j
)
346 __newc
[__j
] = _M_caches
[__j
];
347 for (size_t __k
= _M_facets_size
; __k
< __new_size
; ++__k
)
350 _M_facets_size
= __new_size
;
357 __fp
->_M_add_reference();
358 const facet
*& __fpr
= _M_facets
[__index
];
361 // Replacing an existing facet. Order matters.
362 __fpr
->_M_remove_reference();
367 // Installing a newly created facet into an empty
368 // _M_facets container, say a newly-constructed,
369 // swanky-fresh _Impl.
370 _M_facets
[__index
] = __fp
;
373 // Ideally, it would be nice to only remove the caches that
374 // are now incorrect. However, some of the caches depend on
375 // multiple facets, and we only know about one facet
376 // here. It's no great loss: the first use of the new facet
377 // will create a new, correctly cached facet anyway.
378 for (size_t __i
= 0; __i
< _M_facets_size
; ++__i
)
380 const facet
* __cpr
= _M_caches
[__i
];
383 __cpr
->_M_remove_reference();
392 _M_install_cache(const facet
* __cache
, size_t __index
)
394 __gnu_cxx::lock
sentry(locale_cache_mutex
);
395 if (_M_caches
[__index
] != 0)
397 // Some other thread got in first.
402 __cache
->_M_add_reference();
403 _M_caches
[__index
] = __cache
;
408 // Definitions for static const data members of locale::id
409 _Atomic_word
locale::id::_S_refcount
; // init'd to 0 by linker
412 locale::id::_M_id() const
416 // XXX GLIBCXX_ABI Deprecated
417 #ifdef _GLIBCXX_LONG_DOUBLE_COMPAT
419 # define _GLIBCXX_SYNC_ID(facet, mangled) \
420 if (this == &::mangled) \
422 _GLIBCXX_SYNC_ID (num_get
<char>, _ZNSt7num_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
423 _GLIBCXX_SYNC_ID (num_put
<char>, _ZNSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
424 _GLIBCXX_SYNC_ID (money_get
<char>, _ZNSt9money_getIcSt19istreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
425 _GLIBCXX_SYNC_ID (money_put
<char>, _ZNSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE2idE
);
426 # ifdef _GLIBCXX_USE_WCHAR_T
427 _GLIBCXX_SYNC_ID (num_get
<wchar_t>, _ZNSt7num_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
428 _GLIBCXX_SYNC_ID (num_put
<wchar_t>, _ZNSt7num_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
429 _GLIBCXX_SYNC_ID (money_get
<wchar_t>, _ZNSt9money_getIwSt19istreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
430 _GLIBCXX_SYNC_ID (money_put
<wchar_t>, _ZNSt9money_putIwSt19ostreambuf_iteratorIwSt11char_traitsIwEEE2idE
);
433 _M_index
= 1 + f
->_M_id();
436 _M_index
= 1 + __gnu_cxx::__exchange_and_add_dispatch(&_S_refcount
,
442 _GLIBCXX_END_NAMESPACE