1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
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.
39 #include <bits/atomicity.h>
43 // Defined in globals.cc.
44 extern locale c_locale
;
45 extern locale::_Impl c_locale_impl
;
46 extern locale::facet
** facet_vec
;
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 locale::_Impl
* locale::_S_classic
;
59 locale::_Impl
* locale::_S_global
;
60 const size_t locale::_S_num_categories
;
62 // Definitions for static const data members of locale::id
63 _Atomic_word
locale::id::_S_highwater
; // init'd to 0 by linker
65 // Definitions for static const data members of locale::_Impl
66 const locale::id
* const
67 locale::_Impl::_S_id_ctype
[] =
69 &std::ctype
<char>::id
,
70 &codecvt
<char, char, mbstate_t>::id
,
71 #ifdef _GLIBCPP_USE_WCHAR_T
72 &std::ctype
<wchar_t>::id
,
73 &codecvt
<wchar_t, char, mbstate_t>::id
,
78 const locale::id
* const
79 locale::_Impl::_S_id_numeric
[] =
84 #ifdef _GLIBCPP_USE_WCHAR_T
85 &num_get
<wchar_t>::id
,
86 &num_put
<wchar_t>::id
,
87 &numpunct
<wchar_t>::id
,
92 const locale::id
* const
93 locale::_Impl::_S_id_collate
[] =
95 &std::collate
<char>::id
,
96 #ifdef _GLIBCPP_USE_WCHAR_T
97 &std::collate
<wchar_t>::id
,
102 const locale::id
* const
103 locale::_Impl::_S_id_time
[] =
105 &__timepunct
<char>::id
,
108 #ifdef _GLIBCPP_USE_WCHAR_T
109 &__timepunct
<wchar_t>::id
,
110 &time_get
<wchar_t>::id
,
111 &time_put
<wchar_t>::id
,
116 const locale::id
* const
117 locale::_Impl::_S_id_monetary
[] =
119 &money_get
<char>::id
,
120 &money_put
<char>::id
,
121 &moneypunct
<char, false>::id
,
122 &moneypunct
<char, true >::id
,
123 #ifdef _GLIBCPP_USE_WCHAR_T
124 &money_get
<wchar_t>::id
,
125 &money_put
<wchar_t>::id
,
126 &moneypunct
<wchar_t, false>::id
,
127 &moneypunct
<wchar_t, true >::id
,
132 const locale::id
* const
133 locale::_Impl::_S_id_messages
[] =
135 &std::messages
<char>::id
,
136 #ifdef _GLIBCPP_USE_WCHAR_T
137 &std::messages
<wchar_t>::id
,
142 const locale::id
* const* const
143 locale::_Impl::_S_facet_categories
[] =
145 // Order must match the decl order in class locale.
146 locale::_Impl::_S_id_ctype
,
147 locale::_Impl::_S_id_numeric
,
148 locale::_Impl::_S_id_collate
,
149 locale::_Impl::_S_id_monetary
,
150 locale::_Impl::_S_id_time
,
151 locale::_Impl::_S_id_messages
,
155 locale::~locale() throw()
156 { _M_impl
->_M_remove_reference(); }
159 locale::_M_coalesce(const locale
& __base
, const locale
& __add
,
162 __cat
= _S_normalize_category(__cat
);
163 _M_impl
= new _Impl(*__base
._M_impl
, 1);
166 { _M_impl
->_M_replace_categories(__add
._M_impl
, __cat
); }
169 _M_impl
->_M_remove_reference();
170 __throw_exception_again
;
174 locale::locale() throw()
177 (_M_impl
= _S_global
)->_M_add_reference();
180 locale::locale(const locale
& __other
) throw()
181 { (_M_impl
= __other
._M_impl
)->_M_add_reference(); }
183 // This is used to initialize global and classic locales, and
184 // assumes that the _Impl objects are constructed correctly.
185 locale::locale(_Impl
* __ip
) throw() : _M_impl(__ip
)
188 locale::locale(const char* __s
)
193 if (strcmp(__s
, "C") == 0 || strcmp(__s
, "POSIX") == 0)
194 (_M_impl
= _S_classic
)->_M_add_reference();
195 else if (strcmp(__s
, "") == 0)
197 char* __env
= getenv("LC_ALL");
199 _M_impl
= new _Impl(__env
, 1);
200 else if ((__env
= getenv("LANG")))
201 _M_impl
= new _Impl(__env
, 1);
203 (_M_impl
= _S_classic
)->_M_add_reference();
206 _M_impl
= new _Impl(__s
, 1);
209 __throw_runtime_error("attempt to create locale from NULL name");
212 locale::locale(const locale
& __base
, const char* __s
, category __cat
)
214 // NB: There are complicated, yet more efficient ways to do
215 // this. Building up locales on a per-category way is tedious, so
216 // let's do it this way until people complain.
218 _M_coalesce(__base
, __add
, __cat
);
221 locale::locale(const locale
& __base
, const locale
& __add
, category __cat
)
222 { _M_coalesce(__base
, __add
, __cat
); }
225 locale::operator==(const locale
& __rhs
) const throw()
227 string __name
= this->name();
228 return (_M_impl
== __rhs
._M_impl
229 || (__name
!= "*" && __name
== __rhs
.name()));
233 locale::operator=(const locale
& __other
) throw()
235 __other
._M_impl
->_M_add_reference();
236 _M_impl
->_M_remove_reference();
237 _M_impl
= __other
._M_impl
;
242 locale::global(const locale
& __other
)
246 _Impl
* __old
= _S_global
;
247 __other
._M_impl
->_M_add_reference();
248 _S_global
= __other
._M_impl
;
249 if (_S_global
->_M_check_same_name()
250 && (strcmp(_S_global
->_M_names
[0], "*") != 0))
251 setlocale(LC_ALL
, __other
.name().c_str());
253 // Reference count sanity check: one reference removed for the
254 // subsition of __other locale, one added by return-by-value. Net
255 // difference: zero. When the returned locale object's destrutor
256 // is called, then the reference count is decremented and possibly
258 return locale(__old
);
264 // Need some kind of separator character. This one was pretty much
265 // arbitrarily chosen as to not conflict with glibc locales: the
266 // exact formatting is not set in stone.
267 const char __separator
= '|';
270 if (_M_impl
->_M_check_same_name())
271 __ret
= _M_impl
->_M_names
[0];
274 for (size_t i
= 0; i
< _S_num_categories
; ++i
)
276 __ret
+= __separator
;
277 __ret
+= _M_impl
->_M_names
[i
];
286 static _STL_mutex_lock __lock __STL_MUTEX_INITIALIZER
;
287 _STL_auto_lock
__auto(__lock
);
293 // 26 Standard facets, 2 references.
294 // One reference for _M_classic, one for _M_global
295 facet
** f
= new(&facet_vec
) facet
*[_GLIBCPP_NUM_FACETS
];
296 for (size_t __i
= 0; __i
< _GLIBCPP_NUM_FACETS
; ++__i
)
299 _S_classic
= new (&c_locale_impl
) _Impl(f
, 2, true);
300 _S_global
= _S_classic
;
301 new (&c_locale
) locale(_S_classic
);
305 // Just call destructor, so that locale_impl_c's memory is
306 // not deallocated via a call to delete.
308 _S_classic
->~_Impl();
309 _S_classic
= _S_global
= 0;
310 __throw_exception_again
;
317 locale::_S_normalize_category(category __cat
)
320 if (__cat
== none
|| (__cat
& all
) && !(__cat
& ~all
))
324 // NB: May be a C-style "LC_ALL" category; convert.
342 #ifdef _GLIBCPP_HAVE_LC_MESSAGES
351 __throw_runtime_error("bad locale category");
358 locale::facet::_S_c_locale
;
364 facet(size_t __refs
) throw() : _M_references(__refs
)
367 _S_create_c_locale(_S_c_locale
, "C");
372 _M_add_reference() throw()
373 { __atomic_add(&_M_references
, 1); }
377 _M_remove_reference() throw()
379 if (__exchange_and_add(&_M_references
, -1) == 0)
391 // Definitions for static const data members of time_base
394 __timepunct
<char>::_S_timezones
[14] =
396 "GMT", "HST", "AKST", "PST", "MST", "CST", "EST", "AST", "NST", "CET",
397 "IST", "EET", "CST", "JST"
400 #ifdef _GLIBCPP_USE_WCHAR_T
403 __timepunct
<wchar_t>::_S_timezones
[14] =
405 L
"GMT", L
"HST", L
"AKST", L
"PST", L
"MST", L
"CST", L
"EST", L
"AST",
406 L
"NST", L
"CET", L
"IST", L
"EET", L
"CST", L
"JST"
410 // Definitions for static const data members of money_base
411 const money_base::pattern
412 money_base::_S_default_pattern
= { {symbol
, sign
, none
, value
} };
414 const char __num_base::_S_atoms
[] = "0123456789eEabcdfABCDF";
417 __num_base::_S_format_float(const ios_base
& __io
, char* __fptr
, char __mod
,
420 bool __incl_prec
= false;
421 ios_base::fmtflags __flags
= __io
.flags();
423 // [22.2.2.2.2] Table 60
424 if (__flags
& ios_base::showpos
)
426 if (__flags
& ios_base::showpoint
)
428 // As per [22.2.2.2.2.11]
429 if (__flags
& ios_base::fixed
|| __prec
> 0)
437 ios_base::fmtflags __fltfield
= __flags
& ios_base::floatfield
;
438 // [22.2.2.2.2] Table 58
439 if (__fltfield
== ios_base::fixed
)
441 else if (__fltfield
== ios_base::scientific
)
442 *__fptr
++ = (__flags
& ios_base::uppercase
) ? 'E' : 'e';
444 *__fptr
++ = (__flags
& ios_base::uppercase
) ? 'G' : 'g';
450 __num_base::_S_format_int(const ios_base
& __io
, char* __fptr
, char __mod
,
453 ios_base::fmtflags __flags
= __io
.flags();
455 // [22.2.2.2.2] Table 60
456 if (__flags
& ios_base::showpos
)
458 if (__flags
& ios_base::showbase
)
462 // For long long types.
466 ios_base::fmtflags __bsefield
= __flags
& ios_base::basefield
;
467 if (__bsefield
== ios_base::hex
)
468 *__fptr
++ = (__flags
& ios_base::uppercase
) ? 'X' : 'x';
469 else if (__bsefield
== ios_base::oct
)