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.
35 #include <bits/atomicity.h>
39 // Defined in globals.cc.
40 extern locale c_locale;
41 extern locale::_Impl c_locale_impl;
43 // Definitions for static const data members of locale.
44 const locale::category locale::none;
45 const locale::category locale::ctype;
46 const locale::category locale::numeric;
47 const locale::category locale::collate;
48 const locale::category locale::time;
49 const locale::category locale::monetary;
50 const locale::category locale::messages;
51 const locale::category locale::all;
53 locale::_Impl* locale::_S_classic;
54 locale::_Impl* locale::_S_global;
55 const size_t locale::_S_categories_size;
56 const size_t locale::_S_extra_categories_size;
58 // Definitions for static const data members of locale::id
59 _Atomic_word locale::id::_S_highwater; // init'd to 0 by linker
61 // Definitions for static const data members of locale::_Impl
62 const locale::id* const
63 locale::_Impl::_S_id_ctype[] =
65 &std::ctype<char>::id,
66 &codecvt<char, char, mbstate_t>::id,
67 #ifdef _GLIBCPP_USE_WCHAR_T
68 &std::ctype<wchar_t>::id,
69 &codecvt<wchar_t, char, mbstate_t>::id,
74 const locale::id* const
75 locale::_Impl::_S_id_numeric[] =
80 #ifdef _GLIBCPP_USE_WCHAR_T
81 &num_get<wchar_t>::id,
82 &num_put<wchar_t>::id,
83 &numpunct<wchar_t>::id,
88 const locale::id* const
89 locale::_Impl::_S_id_collate[] =
91 &std::collate<char>::id,
92 #ifdef _GLIBCPP_USE_WCHAR_T
93 &std::collate<wchar_t>::id,
98 const locale::id* const
99 locale::_Impl::_S_id_time[] =
101 &__timepunct<char>::id,
104 #ifdef _GLIBCPP_USE_WCHAR_T
105 &__timepunct<wchar_t>::id,
106 &time_get<wchar_t>::id,
107 &time_put<wchar_t>::id,
112 const locale::id* const
113 locale::_Impl::_S_id_monetary[] =
115 &money_get<char>::id,
116 &money_put<char>::id,
117 &moneypunct<char, false>::id,
118 &moneypunct<char, true >::id,
119 #ifdef _GLIBCPP_USE_WCHAR_T
120 &money_get<wchar_t>::id,
121 &money_put<wchar_t>::id,
122 &moneypunct<wchar_t, false>::id,
123 &moneypunct<wchar_t, true >::id,
128 const locale::id* const
129 locale::_Impl::_S_id_messages[] =
131 &std::messages<char>::id,
132 #ifdef _GLIBCPP_USE_WCHAR_T
133 &std::messages<wchar_t>::id,
138 const locale::id* const* const
139 locale::_Impl::_S_facet_categories[] =
141 // Order must match the decl order in class locale.
142 locale::_Impl::_S_id_ctype,
143 locale::_Impl::_S_id_numeric,
144 locale::_Impl::_S_id_collate,
145 locale::_Impl::_S_id_time,
146 locale::_Impl::_S_id_monetary,
147 locale::_Impl::_S_id_messages,
151 locale::~locale() throw()
152 { _M_impl->_M_remove_reference(); }
155 locale::_M_coalesce(const locale& __base, const locale& __add,
158 __cat = _S_normalize_category(__cat);
159 _M_impl = new _Impl(*__base._M_impl, 1);
162 { _M_impl->_M_replace_categories(__add._M_impl, __cat); }
165 _M_impl->_M_remove_reference();
166 __throw_exception_again;
170 locale::locale() throw()
173 (_M_impl = _S_global)->_M_add_reference();
176 locale::locale(const locale& __other) throw()
177 { (_M_impl = __other._M_impl)->_M_add_reference(); }
179 // This is used to initialize global and classic locales, and
180 // assumes that the _Impl objects are constructed correctly.
181 locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
184 locale::locale(const char* __s)
189 if (strcmp(__s, "C") == 0 || strcmp(__s, "POSIX") == 0)
190 (_M_impl = _S_classic)->_M_add_reference();
191 else if (strcmp(__s, "") != 0)
192 _M_impl = new _Impl(__s, 1);
195 // Get it from the environment.
196 char* __env = getenv("LC_ALL");
197 // If LC_ALL is set we are done.
198 if (__env && strcmp(__env, "") != 0)
200 if (strcmp(__env, "C") == 0 || strcmp(__env, "POSIX") == 0)
201 (_M_impl = _S_classic)->_M_add_reference();
203 _M_impl = new _Impl(__env, 1);
208 // LANG may set a default different from "C".
209 char* __env = getenv("LANG");
210 if (!__env || strcmp(__env, "") == 0 || strcmp(__env, "C") == 0
211 || strcmp(__env, "POSIX") == 0)
214 __res = strdup(__env);
216 // Scan the categories looking for the first one
217 // different from LANG.
219 if (strcmp(__res, "C") == 0)
221 __i < _S_categories_size + _S_extra_categories_size;
224 __env = getenv(_S_categories[__i]);
225 if (__env && strcmp(__env, "") != 0
226 && strcmp(__env, "C") != 0
227 && strcmp(__env, "POSIX") != 0)
232 __i < _S_categories_size + _S_extra_categories_size;
235 __env = getenv(_S_categories[__i]);
236 if (__env && strcmp(__env, "") != 0
237 && strcmp(__env, __res) != 0)
241 // If one is found, build the complete string of
242 // the form LC_CTYPE=xxx;LC_NUMERIC=yyy; and so on...
243 if (__i < _S_categories_size + _S_extra_categories_size)
246 for (size_t __j = 0; __j < __i; ++__j)
248 __str += _S_categories[__j];
253 __str += _S_categories[__i];
258 for (; __i < _S_categories_size
259 + _S_extra_categories_size; ++__i)
261 __env = getenv(_S_categories[__i]);
262 if (!__env || strcmp(__env, "") == 0)
264 __str += _S_categories[__i];
269 else if (strcmp(__env, "C") == 0
270 || strcmp(__env, "POSIX") == 0)
272 __str += _S_categories[__i];
277 __str += _S_categories[__i];
283 __str.erase(__str.end() - 1);
284 _M_impl = new _Impl(__str.c_str(), 1);
286 // ... otherwise either an additional instance of
287 // the "C" locale or LANG.
288 else if (strcmp(__res, "C") == 0)
289 (_M_impl = _S_classic)->_M_add_reference();
291 _M_impl = new _Impl(__res, 1);
297 __throw_runtime_error("attempt to create locale from NULL name");
300 locale::locale(const locale& __base, const char* __s, category __cat)
302 // NB: There are complicated, yet more efficient ways to do
303 // this. Building up locales on a per-category way is tedious, so
304 // let's do it this way until people complain.
306 _M_coalesce(__base, __add, __cat);
309 locale::locale(const locale& __base, const locale& __add, category __cat)
310 { _M_coalesce(__base, __add, __cat); }
313 locale::operator==(const locale& __rhs) const throw()
315 string __name = this->name();
316 return (_M_impl == __rhs._M_impl
317 || (__name != "*" && __name == __rhs.name()));
321 locale::operator=(const locale& __other) throw()
323 __other._M_impl->_M_add_reference();
324 _M_impl->_M_remove_reference();
325 _M_impl = __other._M_impl;
330 locale::global(const locale& __other)
334 _Impl* __old = _S_global;
335 __other._M_impl->_M_add_reference();
336 _S_global = __other._M_impl;
337 if (_S_global->_M_check_same_name()
338 && (strcmp(_S_global->_M_names[0], "*") != 0))
339 setlocale(LC_ALL, __other.name().c_str());
341 // Reference count sanity check: one reference removed for the
342 // subsition of __other locale, one added by return-by-value. Net
343 // difference: zero. When the returned locale object's destrutor
344 // is called, then the reference count is decremented and possibly
346 return locale(__old);
353 if (_M_impl->_M_check_same_name())
354 __ret = _M_impl->_M_names[0];
357 __ret += _S_categories[0];
359 __ret += _M_impl->_M_names[0];
361 __i < _S_categories_size + _S_extra_categories_size;
365 __ret += _S_categories[__i];
367 __ret += _M_impl->_M_names[__i];
376 static _STL_mutex_lock __lock __STL_MUTEX_INITIALIZER;
377 _STL_auto_lock __auto(__lock);
383 // 26 Standard facets, 2 references.
384 // One reference for _M_classic, one for _M_global
385 _S_classic = new (&c_locale_impl) _Impl(0, 2, true);
386 _S_global = _S_classic;
387 new (&c_locale) locale(_S_classic);
391 // Just call destructor, so that locale_impl_c's memory is
392 // not deallocated via a call to delete.
394 _S_classic->~_Impl();
395 _S_classic = _S_global = 0;
396 __throw_exception_again;
403 locale::_S_normalize_category(category __cat)
406 if (__cat == none || (__cat & all) && !(__cat & ~all))
410 // NB: May be a C-style "LC_ALL" category; convert.
428 #ifdef _GLIBCPP_HAVE_LC_MESSAGES
437 __throw_runtime_error("bad locale category");
444 locale::facet::_S_c_locale;
450 facet(size_t __refs) throw() : _M_references(__refs ? 1 : 0)
455 _M_add_reference() throw()
456 { __atomic_add(&_M_references, 1); }
460 _M_remove_reference() throw()
462 if (__exchange_and_add(&_M_references, -1) == 1)
474 // Definitions for static const data members of time_base
477 __timepunct<char>::_S_timezones[14] =
479 "GMT", "HST", "AKST", "PST", "MST", "CST", "EST", "AST", "NST", "CET",
480 "IST", "EET", "CST", "JST"
483 #ifdef _GLIBCPP_USE_WCHAR_T
486 __timepunct<wchar_t>::_S_timezones[14] =
488 L"GMT", L"HST", L"AKST", L"PST", L"MST", L"CST", L"EST", L"AST",
489 L"NST", L"CET", L"IST", L"EET", L"CST", L"JST"
493 // Definitions for static const data members of money_base
494 const money_base::pattern
495 money_base::_S_default_pattern = { {symbol, sign, none, value} };
497 const char __num_base::_S_atoms[] = "0123456789eEabcdfABCDF";
500 __num_base::_S_format_float(const ios_base& __io, char* __fptr, char __mod,
503 bool __incl_prec = false;
504 ios_base::fmtflags __flags = __io.flags();
506 // [22.2.2.2.2] Table 60
507 if (__flags & ios_base::showpos)
509 if (__flags & ios_base::showpoint)
511 // As per [22.2.2.2.2.11]
512 if (__flags & ios_base::fixed || __prec > 0)
520 ios_base::fmtflags __fltfield = __flags & ios_base::floatfield;
521 // [22.2.2.2.2] Table 58
522 if (__fltfield == ios_base::fixed)
524 else if (__fltfield == ios_base::scientific)
525 *__fptr++ = (__flags & ios_base::uppercase) ? 'E' : 'e';
527 *__fptr++ = (__flags & ios_base::uppercase) ? 'G' : 'g';
533 __num_base::_S_format_int(const ios_base& __io, char* __fptr, char __mod,
536 ios_base::fmtflags __flags = __io.flags();
538 // [22.2.2.2.2] Table 60
539 if (__flags & ios_base::showpos)
541 if (__flags & ios_base::showbase)
545 // For long long types.
549 ios_base::fmtflags __bsefield = __flags & ios_base::basefield;
550 if (__bsefield == ios_base::hex)
551 *__fptr++ = (__flags & ios_base::uppercase) ? 'X' : 'x';
552 else if (__bsefield == ios_base::oct)