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)