1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2 // 2006, 2007, 2008, 2009
3 // Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
30 _GLIBCXX_BEGIN_NAMESPACE(std
)
32 using namespace __gnu_cxx
;
34 locale::locale(const char* __s
) : _M_impl(0)
39 if (std::strcmp(__s
, "C") == 0 || std::strcmp(__s
, "POSIX") == 0)
40 (_M_impl
= _S_classic
)->_M_add_reference();
41 else if (std::strcmp(__s
, "") != 0)
42 _M_impl
= new _Impl(__s
, 1);
45 // Get it from the environment.
46 char* __env
= std::getenv("LC_ALL");
47 // If LC_ALL is set we are done.
48 if (__env
&& std::strcmp(__env
, "") != 0)
50 if (std::strcmp(__env
, "C") == 0
51 || std::strcmp(__env
, "POSIX") == 0)
52 (_M_impl
= _S_classic
)->_M_add_reference();
54 _M_impl
= new _Impl(__env
, 1);
58 // LANG may set a default different from "C".
60 __env
= std::getenv("LANG");
61 if (!__env
|| std::strcmp(__env
, "") == 0
62 || std::strcmp(__env
, "C") == 0
63 || std::strcmp(__env
, "POSIX") == 0)
68 // Scan the categories looking for the first one
69 // different from LANG.
72 for (; __i
< _S_categories_size
; ++__i
)
74 __env
= std::getenv(_S_categories
[__i
]);
75 if (__env
&& std::strcmp(__env
, "") != 0
76 && std::strcmp(__env
, "C") != 0
77 && std::strcmp(__env
, "POSIX") != 0)
81 for (; __i
< _S_categories_size
; ++__i
)
83 __env
= std::getenv(_S_categories
[__i
]);
84 if (__env
&& std::strcmp(__env
, "") != 0
89 // If one is found, build the complete string of
90 // the form LC_CTYPE=xxx;LC_NUMERIC=yyy; and so on...
91 if (__i
< _S_categories_size
)
95 for (size_t __j
= 0; __j
< __i
; ++__j
)
97 __str
+= _S_categories
[__j
];
102 __str
+= _S_categories
[__i
];
107 for (; __i
< _S_categories_size
; ++__i
)
109 __env
= std::getenv(_S_categories
[__i
]);
110 __str
+= _S_categories
[__i
];
111 if (!__env
|| std::strcmp(__env
, "") == 0)
117 else if (std::strcmp(__env
, "C") == 0
118 || std::strcmp(__env
, "POSIX") == 0)
127 __str
.erase(__str
.end() - 1);
128 _M_impl
= new _Impl(__str
.c_str(), 1);
130 // ... otherwise either an additional instance of
131 // the "C" locale or LANG.
132 else if (__lang
== "C")
133 (_M_impl
= _S_classic
)->_M_add_reference();
135 _M_impl
= new _Impl(__lang
.c_str(), 1);
140 __throw_runtime_error(__N("locale::locale null not valid"));
143 locale::locale(const locale
& __base
, const char* __s
, category __cat
)
146 // NB: There are complicated, yet more efficient ways to do
147 // this. Building up locales on a per-category way is tedious, so
148 // let's do it this way until people complain.
150 _M_coalesce(__base
, __add
, __cat
);
153 locale::locale(const locale
& __base
, const locale
& __add
, category __cat
)
155 { _M_coalesce(__base
, __add
, __cat
); }
158 locale::_M_coalesce(const locale
& __base
, const locale
& __add
,
161 __cat
= _S_normalize_category(__cat
);
162 _M_impl
= new _Impl(*__base
._M_impl
, 1);
165 { _M_impl
->_M_replace_categories(__add
._M_impl
, __cat
); }
168 _M_impl
->_M_remove_reference();
169 __throw_exception_again
;
173 // Construct named _Impl.
175 _Impl(const char* __s
, size_t __refs
)
176 : _M_refcount(__refs
), _M_facets(0), _M_facets_size(_GLIBCXX_NUM_FACETS
),
177 _M_caches(0), _M_names(0)
179 // Initialize the underlying locale model, which also checks to
180 // see if the given name is valid.
182 locale::facet::_S_create_c_locale(__cloc
, __s
);
183 __c_locale __clocm
= __cloc
;
187 _M_facets
= new const facet
*[_M_facets_size
];
188 for (size_t __i
= 0; __i
< _M_facets_size
; ++__i
)
190 _M_caches
= new const facet
*[_M_facets_size
];
191 for (size_t __j
= 0; __j
< _M_facets_size
; ++__j
)
193 _M_names
= new char*[_S_categories_size
];
194 for (size_t __k
= 0; __k
< _S_categories_size
; ++__k
)
197 // Name the categories.
198 const char* __smon
= __s
;
199 const size_t __len
= std::strlen(__s
);
200 if (!std::memchr(__s
, ';', __len
))
202 _M_names
[0] = new char[__len
+ 1];
203 std::memcpy(_M_names
[0], __s
, __len
+ 1);
207 const char* __end
= __s
;
208 bool __found_ctype
= false;
209 bool __found_monetary
= false;
210 size_t __ci
= 0, __mi
= 0;
211 for (size_t __i
= 0; __i
< _S_categories_size
; ++__i
)
213 const char* __beg
= std::strchr(__end
+ 1, '=') + 1;
214 __end
= std::strchr(__beg
, ';');
217 _M_names
[__i
] = new char[__end
- __beg
+ 1];
218 std::memcpy(_M_names
[__i
], __beg
, __end
- __beg
);
219 _M_names
[__i
][__end
- __beg
] = '\0';
221 && *(__beg
- 2) == 'E' && *(__beg
- 3) == 'P')
223 __found_ctype
= true;
226 else if (!__found_monetary
&& *(__beg
- 2) == 'Y')
228 __found_monetary
= true;
233 if (std::strcmp(_M_names
[__ci
], _M_names
[__mi
]))
235 __smon
= _M_names
[__mi
];
236 __clocm
= locale::facet::_S_lc_ctype_c_locale(__cloc
,
241 // Construct all standard facets and add them to _M_facets.
242 _M_init_facet(new std::ctype
<char>(__cloc
, 0, false));
243 _M_init_facet(new codecvt
<char, char, mbstate_t>(__cloc
));
244 _M_init_facet(new numpunct
<char>(__cloc
));
245 _M_init_facet(new num_get
<char>);
246 _M_init_facet(new num_put
<char>);
247 _M_init_facet(new std::collate
<char>(__cloc
));
248 _M_init_facet(new moneypunct
<char, false>(__cloc
, 0));
249 _M_init_facet(new moneypunct
<char, true>(__cloc
, 0));
250 _M_init_facet(new money_get
<char>);
251 _M_init_facet(new money_put
<char>);
252 _M_init_facet(new __timepunct
<char>(__cloc
, __s
));
253 _M_init_facet(new time_get
<char>);
254 _M_init_facet(new time_put
<char>);
255 _M_init_facet(new std::messages
<char>(__cloc
, __s
));
257 #ifdef _GLIBCXX_USE_WCHAR_T
258 _M_init_facet(new std::ctype
<wchar_t>(__cloc
));
259 _M_init_facet(new codecvt
<wchar_t, char, mbstate_t>(__cloc
));
260 _M_init_facet(new numpunct
<wchar_t>(__cloc
));
261 _M_init_facet(new num_get
<wchar_t>);
262 _M_init_facet(new num_put
<wchar_t>);
263 _M_init_facet(new std::collate
<wchar_t>(__cloc
));
264 _M_init_facet(new moneypunct
<wchar_t, false>(__clocm
, __smon
));
265 _M_init_facet(new moneypunct
<wchar_t, true>(__clocm
, __smon
));
266 _M_init_facet(new money_get
<wchar_t>);
267 _M_init_facet(new money_put
<wchar_t>);
268 _M_init_facet(new __timepunct
<wchar_t>(__cloc
, __s
));
269 _M_init_facet(new time_get
<wchar_t>);
270 _M_init_facet(new time_put
<wchar_t>);
271 _M_init_facet(new std::messages
<wchar_t>(__cloc
, __s
));
273 locale::facet::_S_destroy_c_locale(__cloc
);
274 if (__clocm
!= __cloc
)
275 locale::facet::_S_destroy_c_locale(__clocm
);
279 locale::facet::_S_destroy_c_locale(__cloc
);
280 if (__clocm
!= __cloc
)
281 locale::facet::_S_destroy_c_locale(__clocm
);
283 __throw_exception_again
;
289 _M_replace_categories(const _Impl
* __imp
, category __cat
)
292 if (!_M_names
[0] || !__imp
->_M_names
[0])
296 delete [] _M_names
[0];
297 _M_names
[0] = 0; // Unnamed.
300 for (size_t __ix
= 0; __ix
< _S_categories_size
; ++__ix
, __mask
<<= 1)
303 // Need to replace entry in _M_facets with other locale's info.
304 _M_replace_category(__imp
, _S_facet_categories
[__ix
]);
311 // A full set of _M_names must be prepared, all identical
312 // to _M_names[0] to begin with. Then, below, a few will
313 // be replaced by the corresponding __imp->_M_names. I.e.,
314 // not a "simple" locale anymore (see locale::operator==).
315 const size_t __len
= std::strlen(_M_names
[0]) + 1;
316 for (size_t __i
= 1; __i
< _S_categories_size
; ++__i
)
318 _M_names
[__i
] = new char[__len
];
319 std::memcpy(_M_names
[__i
], _M_names
[0], __len
);
323 for (size_t __ix
= 0; __ix
< _S_categories_size
; ++__ix
, __mask
<<= 1)
327 // Need to replace entry in _M_facets with other locale's info.
328 _M_replace_category(__imp
, _S_facet_categories
[__ix
]);
330 // FIXME: Hack for libstdc++/29217: the numerical encodings
331 // of the time and collate categories are swapped vs the
332 // order of the names in locale::_S_categories. We'd like to
333 // adjust the former (the latter is dictated by compatibility
334 // with glibc) but we can't for binary compatibility.
335 size_t __ix_name
= __ix
;
336 if (__ix
== 2 || __ix
== 3)
337 __ix_name
= 5 - __ix
;
339 char* __src
= __imp
->_M_names
[__ix_name
] ?
340 __imp
->_M_names
[__ix_name
] : __imp
->_M_names
[0];
341 const size_t __len
= std::strlen(__src
) + 1;
342 char* __new
= new char[__len
];
343 std::memcpy(__new
, __src
, __len
);
344 delete [] _M_names
[__ix_name
];
345 _M_names
[__ix_name
] = __new
;
351 _GLIBCXX_END_NAMESPACE