1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
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.
33 #include <cwctype> // For towupper, etc.
35 #include <bits/atomicity.h>
39 // Defined in globals.cc.
40 extern std::locale c_locale
;
41 extern std::locale::_Impl c_locale_impl
;
42 } // namespace __gnu_cxx
46 using namespace __gnu_cxx
;
48 // Definitions for static const data members of locale.
49 const locale::category
locale::none
;
50 const locale::category
locale::ctype
;
51 const locale::category
locale::numeric
;
52 const locale::category
locale::collate
;
53 const locale::category
locale::time
;
54 const locale::category
locale::monetary
;
55 const locale::category
locale::messages
;
56 const locale::category
locale::all
;
58 // In the future, GLIBCXX_ABI > 5 should remove all uses of
59 // _GLIBCPP_ASM_SYMVER in this file, and remove exports of any
60 // static data members of locale.
61 locale::_Impl
* locale::_S_classic
;
62 locale::_Impl
* locale::_S_global
;
63 const size_t locale::_S_categories_size
;
64 _GLIBCPP_ASM_SYMVER(_ZNSt6locale18_S_categories_sizeE
, _ZNSt6locale17_S_num_categoriesE
, GLIBCPP_3
.2
)
65 const size_t locale::_S_extra_categories_size
;
67 // Definitions for static const data members of locale::id
68 _Atomic_word
locale::id::_S_highwater
; // init'd to 0 by linker
70 // Definitions for static const data members of locale::_Impl
71 const locale::id
* const
72 locale::_Impl::_S_id_ctype
[] =
74 &std::ctype
<char>::id
,
75 &codecvt
<char, char, mbstate_t>::id
,
76 #ifdef _GLIBCPP_USE_WCHAR_T
77 &std::ctype
<wchar_t>::id
,
78 &codecvt
<wchar_t, char, mbstate_t>::id
,
83 const locale::id
* const
84 locale::_Impl::_S_id_numeric
[] =
89 #ifdef _GLIBCPP_USE_WCHAR_T
90 &num_get
<wchar_t>::id
,
91 &num_put
<wchar_t>::id
,
92 &numpunct
<wchar_t>::id
,
97 const locale::id
* const
98 locale::_Impl::_S_id_collate
[] =
100 &std::collate
<char>::id
,
101 #ifdef _GLIBCPP_USE_WCHAR_T
102 &std::collate
<wchar_t>::id
,
107 const locale::id
* const
108 locale::_Impl::_S_id_time
[] =
110 &__timepunct
<char>::id
,
113 #ifdef _GLIBCPP_USE_WCHAR_T
114 &__timepunct
<wchar_t>::id
,
115 &time_get
<wchar_t>::id
,
116 &time_put
<wchar_t>::id
,
121 const locale::id
* const
122 locale::_Impl::_S_id_monetary
[] =
124 &money_get
<char>::id
,
125 &money_put
<char>::id
,
126 &moneypunct
<char, false>::id
,
127 &moneypunct
<char, true >::id
,
128 #ifdef _GLIBCPP_USE_WCHAR_T
129 &money_get
<wchar_t>::id
,
130 &money_put
<wchar_t>::id
,
131 &moneypunct
<wchar_t, false>::id
,
132 &moneypunct
<wchar_t, true >::id
,
137 const locale::id
* const
138 locale::_Impl::_S_id_messages
[] =
140 &std::messages
<char>::id
,
141 #ifdef _GLIBCPP_USE_WCHAR_T
142 &std::messages
<wchar_t>::id
,
147 const locale::id
* const* const
148 locale::_Impl::_S_facet_categories
[] =
150 // Order must match the decl order in class locale.
151 locale::_Impl::_S_id_ctype
,
152 locale::_Impl::_S_id_numeric
,
153 locale::_Impl::_S_id_collate
,
154 locale::_Impl::_S_id_time
,
155 locale::_Impl::_S_id_monetary
,
156 locale::_Impl::_S_id_messages
,
160 locale::locale() throw()
163 (_M_impl
= _S_global
)->_M_add_reference();
166 locale::locale(const locale
& __other
) throw()
167 { (_M_impl
= __other
._M_impl
)->_M_add_reference(); }
169 // This is used to initialize global and classic locales, and
170 // assumes that the _Impl objects are constructed correctly.
171 // The lack of a reference increment is intentional.
172 locale::locale(_Impl
* __ip
) throw() : _M_impl(__ip
)
175 locale::locale(const char* __s
)
180 if (strcmp(__s
, "C") == 0 || strcmp(__s
, "POSIX") == 0)
181 (_M_impl
= _S_classic
)->_M_add_reference();
182 else if (strcmp(__s
, "") != 0)
183 _M_impl
= new _Impl(__s
, 1);
186 // Get it from the environment.
187 char* __env
= getenv("LC_ALL");
188 // If LC_ALL is set we are done.
189 if (__env
&& strcmp(__env
, "") != 0)
191 if (strcmp(__env
, "C") == 0 || strcmp(__env
, "POSIX") == 0)
192 (_M_impl
= _S_classic
)->_M_add_reference();
194 _M_impl
= new _Impl(__env
, 1);
199 // LANG may set a default different from "C".
200 char* __env
= getenv("LANG");
201 if (!__env
|| strcmp(__env
, "") == 0 || strcmp(__env
, "C") == 0
202 || strcmp(__env
, "POSIX") == 0)
205 __res
= strdup(__env
);
207 // Scan the categories looking for the first one
208 // different from LANG.
210 if (strcmp(__res
, "C") == 0)
211 for (; __i
< _S_categories_size
212 + _S_extra_categories_size
; ++__i
)
214 __env
= getenv(_S_categories
[__i
]);
215 if (__env
&& strcmp(__env
, "") != 0
216 && strcmp(__env
, "C") != 0
217 && strcmp(__env
, "POSIX") != 0)
221 for (; __i
< _S_categories_size
222 + _S_extra_categories_size
; ++__i
)
224 __env
= getenv(_S_categories
[__i
]);
225 if (__env
&& strcmp(__env
, "") != 0
226 && strcmp(__env
, __res
) != 0)
230 // If one is found, build the complete string of
231 // the form LC_CTYPE=xxx;LC_NUMERIC=yyy; and so on...
232 if (__i
< _S_categories_size
+ _S_extra_categories_size
)
235 for (size_t __j
= 0; __j
< __i
; ++__j
)
237 __str
+= _S_categories
[__j
];
242 __str
+= _S_categories
[__i
];
247 for (; __i
< _S_categories_size
248 + _S_extra_categories_size
; ++__i
)
250 __env
= getenv(_S_categories
[__i
]);
251 if (!__env
|| strcmp(__env
, "") == 0)
253 __str
+= _S_categories
[__i
];
258 else if (strcmp(__env
, "C") == 0
259 || strcmp(__env
, "POSIX") == 0)
261 __str
+= _S_categories
[__i
];
266 __str
+= _S_categories
[__i
];
272 __str
.erase(__str
.end() - 1);
273 _M_impl
= new _Impl(__str
.c_str(), 1);
275 // ... otherwise either an additional instance of
276 // the "C" locale or LANG.
277 else if (strcmp(__res
, "C") == 0)
278 (_M_impl
= _S_classic
)->_M_add_reference();
280 _M_impl
= new _Impl(__res
, 1);
286 __throw_runtime_error("attempt to create locale from NULL name");
289 locale::locale(const locale
& __base
, const char* __s
, category __cat
)
291 // NB: There are complicated, yet more efficient ways to do
292 // this. Building up locales on a per-category way is tedious, so
293 // let's do it this way until people complain.
295 _M_coalesce(__base
, __add
, __cat
);
298 locale::locale(const locale
& __base
, const locale
& __add
, category __cat
)
299 { _M_coalesce(__base
, __add
, __cat
); }
301 locale::~locale() throw()
302 { _M_impl
->_M_remove_reference(); }
305 locale::operator==(const locale
& __rhs
) const throw()
307 string __name
= this->name();
308 return (_M_impl
== __rhs
._M_impl
309 || (__name
!= "*" && __name
== __rhs
.name()));
313 locale::operator=(const locale
& __other
) throw()
315 __other
._M_impl
->_M_add_reference();
316 _M_impl
->_M_remove_reference();
317 _M_impl
= __other
._M_impl
;
322 locale::global(const locale
& __other
)
326 _Impl
* __old
= _S_global
;
327 __other
._M_impl
->_M_add_reference();
328 _S_global
= __other
._M_impl
;
329 if (_S_global
->_M_check_same_name()
330 && (strcmp(_S_global
->_M_names
[0], "*") != 0))
331 setlocale(LC_ALL
, __other
.name().c_str());
333 // Reference count sanity check: one reference removed for the
334 // subsition of __other locale, one added by return-by-value. Net
335 // difference: zero. When the returned locale object's destrutor
336 // is called, then the reference count is decremented and possibly
338 return locale(__old
);
345 if (_M_impl
->_M_check_same_name())
346 __ret
= _M_impl
->_M_names
[0];
349 __ret
+= _S_categories
[0];
351 __ret
+= _M_impl
->_M_names
[0];
353 __i
< _S_categories_size
+ _S_extra_categories_size
;
357 __ret
+= _S_categories
[__i
];
359 __ret
+= _M_impl
->_M_names
[__i
];
368 // Locking protocol: singleton-called-before-threading-starts
373 // 26 Standard facets, 2 references.
374 // One reference for _S_classic, one for _S_global
375 _S_classic
= new (&c_locale_impl
) _Impl(0, 2, true);
376 _S_global
= _S_classic
;
377 new (&c_locale
) locale(_S_classic
);
381 // Just call destructor, so that locale_impl_c's memory is
382 // not deallocated via a call to delete.
384 _S_classic
->~_Impl();
385 _S_classic
= _S_global
= 0;
386 __throw_exception_again
;
393 locale::_M_coalesce(const locale
& __base
, const locale
& __add
,
396 __cat
= _S_normalize_category(__cat
);
397 _M_impl
= new _Impl(*__base
._M_impl
, 1);
400 { _M_impl
->_M_replace_categories(__add
._M_impl
, __cat
); }
403 _M_impl
->_M_remove_reference();
404 __throw_exception_again
;
409 locale::_S_normalize_category(category __cat
)
412 if (__cat
== none
|| (__cat
& all
) && !(__cat
& ~all
))
416 // NB: May be a C-style "LC_ALL" category; convert.
434 #ifdef _GLIBCPP_HAVE_LC_MESSAGES
443 __throw_runtime_error("bad locale category");
450 locale::facet::_S_c_locale
;
452 char locale::facet::_S_c_name
[2];
458 facet(size_t __refs
) throw() : _M_references(__refs
? 1 : 0)
463 _M_add_reference() throw()
464 { __atomic_add(&_M_references
, 1); }
468 _M_remove_reference() throw()
470 if (__exchange_and_add(&_M_references
, -1) == 1)
482 // Definitions for static const data members of time_base
485 __timepunct
<char>::_S_timezones
[14] =
487 "GMT", "HST", "AKST", "PST", "MST", "CST", "EST", "AST", "NST", "CET",
488 "IST", "EET", "CST", "JST"
491 #ifdef _GLIBCPP_USE_WCHAR_T
494 __timepunct
<wchar_t>::_S_timezones
[14] =
496 L
"GMT", L
"HST", L
"AKST", L
"PST", L
"MST", L
"CST", L
"EST", L
"AST",
497 L
"NST", L
"CET", L
"IST", L
"EET", L
"CST", L
"JST"
501 // Definitions for static const data members of money_base
502 const money_base::pattern
503 money_base::_S_default_pattern
= { {symbol
, sign
, none
, value
} };
505 const char __num_base::_S_atoms
[] = "0123456789eEabcdfABCDF";
508 __num_base::_S_format_float(const ios_base
& __io
, char* __fptr
, char __mod
,
511 bool __incl_prec
= false;
512 ios_base::fmtflags __flags
= __io
.flags();
514 // [22.2.2.2.2] Table 60
515 if (__flags
& ios_base::showpos
)
517 if (__flags
& ios_base::showpoint
)
519 // As per [22.2.2.2.2.11]
520 if (__flags
& ios_base::fixed
|| __prec
> 0)
528 ios_base::fmtflags __fltfield
= __flags
& ios_base::floatfield
;
529 // [22.2.2.2.2] Table 58
530 if (__fltfield
== ios_base::fixed
)
532 else if (__fltfield
== ios_base::scientific
)
533 *__fptr
++ = (__flags
& ios_base::uppercase
) ? 'E' : 'e';
535 *__fptr
++ = (__flags
& ios_base::uppercase
) ? 'G' : 'g';
541 __num_base::_S_format_int(const ios_base
& __io
, char* __fptr
, char __mod
,
544 ios_base::fmtflags __flags
= __io
.flags();
546 // [22.2.2.2.2] Table 60
547 if (__flags
& ios_base::showpos
)
549 if (__flags
& ios_base::showbase
)
553 // For long long types.
557 ios_base::fmtflags __bsefield
= __flags
& ios_base::basefield
;
558 if (__bsefield
== ios_base::hex
)
559 *__fptr
++ = (__flags
& ios_base::uppercase
) ? 'X' : 'x';
560 else if (__bsefield
== ios_base::oct
)