0,0 → 1,352 |
// Copyright (C) 1997-2013 Free Software Foundation, Inc. |
// |
// This file is part of the GNU ISO C++ Library. This library is free |
// software; you can redistribute it and/or modify it under the |
// terms of the GNU General Public License as published by the |
// Free Software Foundation; either version 3, or (at your option) |
// any later version. |
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// This library is distributed in the hope that it will be useful, |
// but WITHOUT ANY WARRANTY; without even the implied warranty of |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
// GNU General Public License for more details. |
|
// Under Section 7 of GPL version 3, you are granted additional |
// permissions described in the GCC Runtime Library Exception, version |
// 3.1, as published by the Free Software Foundation. |
|
// You should have received a copy of the GNU General Public License and |
// a copy of the GCC Runtime Library Exception along with this program; |
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
// <http://www.gnu.org/licenses/>. |
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#include <clocale> |
#include <cstring> |
#include <cstdlib> |
#include <locale> |
|
namespace std _GLIBCXX_VISIBILITY(default) |
{ |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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using namespace __gnu_cxx; |
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locale::locale(const char* __s) : _M_impl(0) |
{ |
if (__s) |
{ |
_S_initialize(); |
if (std::strcmp(__s, "C") == 0 || std::strcmp(__s, "POSIX") == 0) |
(_M_impl = _S_classic)->_M_add_reference(); |
else if (std::strcmp(__s, "") != 0) |
_M_impl = new _Impl(__s, 1); |
else |
{ |
// Get it from the environment. |
char* __env = std::getenv("LC_ALL"); |
// If LC_ALL is set we are done. |
if (__env && std::strcmp(__env, "") != 0) |
{ |
if (std::strcmp(__env, "C") == 0 |
|| std::strcmp(__env, "POSIX") == 0) |
(_M_impl = _S_classic)->_M_add_reference(); |
else |
_M_impl = new _Impl(__env, 1); |
} |
else |
{ |
// LANG may set a default different from "C". |
string __lang; |
__env = std::getenv("LANG"); |
if (!__env || std::strcmp(__env, "") == 0 |
|| std::strcmp(__env, "C") == 0 |
|| std::strcmp(__env, "POSIX") == 0) |
__lang = "C"; |
else |
__lang = __env; |
|
// Scan the categories looking for the first one |
// different from LANG. |
size_t __i = 0; |
if (__lang == "C") |
for (; __i < _S_categories_size; ++__i) |
{ |
__env = std::getenv(_S_categories[__i]); |
if (__env && std::strcmp(__env, "") != 0 |
&& std::strcmp(__env, "C") != 0 |
&& std::strcmp(__env, "POSIX") != 0) |
break; |
} |
else |
for (; __i < _S_categories_size; ++__i) |
{ |
__env = std::getenv(_S_categories[__i]); |
if (__env && std::strcmp(__env, "") != 0 |
&& __lang != __env) |
break; |
} |
|
// If one is found, build the complete string of |
// the form LC_CTYPE=xxx;LC_NUMERIC=yyy; and so on... |
if (__i < _S_categories_size) |
{ |
string __str; |
__str.reserve(128); |
for (size_t __j = 0; __j < __i; ++__j) |
{ |
__str += _S_categories[__j]; |
__str += '='; |
__str += __lang; |
__str += ';'; |
} |
__str += _S_categories[__i]; |
__str += '='; |
__str += __env; |
__str += ';'; |
++__i; |
for (; __i < _S_categories_size; ++__i) |
{ |
__env = std::getenv(_S_categories[__i]); |
__str += _S_categories[__i]; |
if (!__env || std::strcmp(__env, "") == 0) |
{ |
__str += '='; |
__str += __lang; |
__str += ';'; |
} |
else if (std::strcmp(__env, "C") == 0 |
|| std::strcmp(__env, "POSIX") == 0) |
__str += "=C;"; |
else |
{ |
__str += '='; |
__str += __env; |
__str += ';'; |
} |
} |
__str.erase(__str.end() - 1); |
_M_impl = new _Impl(__str.c_str(), 1); |
} |
// ... otherwise either an additional instance of |
// the "C" locale or LANG. |
else if (__lang == "C") |
(_M_impl = _S_classic)->_M_add_reference(); |
else |
_M_impl = new _Impl(__lang.c_str(), 1); |
} |
} |
} |
else |
__throw_runtime_error(__N("locale::locale null not valid")); |
} |
|
locale::locale(const locale& __base, const char* __s, category __cat) |
: _M_impl(0) |
{ |
// NB: There are complicated, yet more efficient ways to do |
// this. Building up locales on a per-category way is tedious, so |
// let's do it this way until people complain. |
locale __add(__s); |
_M_coalesce(__base, __add, __cat); |
} |
|
locale::locale(const locale& __base, const locale& __add, category __cat) |
: _M_impl(0) |
{ _M_coalesce(__base, __add, __cat); } |
|
void |
locale::_M_coalesce(const locale& __base, const locale& __add, |
category __cat) |
{ |
__cat = _S_normalize_category(__cat); |
_M_impl = new _Impl(*__base._M_impl, 1); |
|
__try |
{ _M_impl->_M_replace_categories(__add._M_impl, __cat); } |
__catch(...) |
{ |
_M_impl->_M_remove_reference(); |
__throw_exception_again; |
} |
} |
|
// Construct named _Impl. |
locale::_Impl:: |
_Impl(const char* __s, size_t __refs) |
: _M_refcount(__refs), _M_facets(0), _M_facets_size(_GLIBCXX_NUM_FACETS), |
_M_caches(0), _M_names(0) |
{ |
// Initialize the underlying locale model, which also checks to |
// see if the given name is valid. |
__c_locale __cloc; |
locale::facet::_S_create_c_locale(__cloc, __s); |
__c_locale __clocm = __cloc; |
|
__try |
{ |
_M_facets = new const facet*[_M_facets_size]; |
for (size_t __i = 0; __i < _M_facets_size; ++__i) |
_M_facets[__i] = 0; |
_M_caches = new const facet*[_M_facets_size]; |
for (size_t __j = 0; __j < _M_facets_size; ++__j) |
_M_caches[__j] = 0; |
_M_names = new char*[_S_categories_size]; |
for (size_t __k = 0; __k < _S_categories_size; ++__k) |
_M_names[__k] = 0; |
|
// Name the categories. |
const char* __smon = __s; |
const size_t __len = std::strlen(__s); |
if (!std::memchr(__s, ';', __len)) |
{ |
_M_names[0] = new char[__len + 1]; |
std::memcpy(_M_names[0], __s, __len + 1); |
} |
else |
{ |
const char* __end = __s; |
bool __found_ctype = false; |
bool __found_monetary = false; |
size_t __ci = 0, __mi = 0; |
for (size_t __i = 0; __i < _S_categories_size; ++__i) |
{ |
const char* __beg = std::strchr(__end + 1, '=') + 1; |
__end = std::strchr(__beg, ';'); |
if (!__end) |
__end = __s + __len; |
_M_names[__i] = new char[__end - __beg + 1]; |
std::memcpy(_M_names[__i], __beg, __end - __beg); |
_M_names[__i][__end - __beg] = '\0'; |
if (!__found_ctype |
&& *(__beg - 2) == 'E' && *(__beg - 3) == 'P') |
{ |
__found_ctype = true; |
__ci = __i; |
} |
else if (!__found_monetary && *(__beg - 2) == 'Y') |
{ |
__found_monetary = true; |
__mi = __i; |
} |
} |
|
if (std::strcmp(_M_names[__ci], _M_names[__mi])) |
{ |
__smon = _M_names[__mi]; |
__clocm = locale::facet::_S_lc_ctype_c_locale(__cloc, |
__smon); |
} |
} |
|
// Construct all standard facets and add them to _M_facets. |
_M_init_facet(new std::ctype<char>(__cloc, 0, false)); |
_M_init_facet(new codecvt<char, char, mbstate_t>(__cloc)); |
_M_init_facet(new numpunct<char>(__cloc)); |
_M_init_facet(new num_get<char>); |
_M_init_facet(new num_put<char>); |
_M_init_facet(new std::collate<char>(__cloc)); |
_M_init_facet(new moneypunct<char, false>(__cloc, 0)); |
_M_init_facet(new moneypunct<char, true>(__cloc, 0)); |
_M_init_facet(new money_get<char>); |
_M_init_facet(new money_put<char>); |
_M_init_facet(new __timepunct<char>(__cloc, __s)); |
_M_init_facet(new time_get<char>); |
_M_init_facet(new time_put<char>); |
_M_init_facet(new std::messages<char>(__cloc, __s)); |
|
#ifdef _GLIBCXX_USE_WCHAR_T |
_M_init_facet(new std::ctype<wchar_t>(__cloc)); |
_M_init_facet(new codecvt<wchar_t, char, mbstate_t>(__cloc)); |
_M_init_facet(new numpunct<wchar_t>(__cloc)); |
_M_init_facet(new num_get<wchar_t>); |
_M_init_facet(new num_put<wchar_t>); |
_M_init_facet(new std::collate<wchar_t>(__cloc)); |
_M_init_facet(new moneypunct<wchar_t, false>(__clocm, __smon)); |
_M_init_facet(new moneypunct<wchar_t, true>(__clocm, __smon)); |
_M_init_facet(new money_get<wchar_t>); |
_M_init_facet(new money_put<wchar_t>); |
_M_init_facet(new __timepunct<wchar_t>(__cloc, __s)); |
_M_init_facet(new time_get<wchar_t>); |
_M_init_facet(new time_put<wchar_t>); |
_M_init_facet(new std::messages<wchar_t>(__cloc, __s)); |
#endif |
locale::facet::_S_destroy_c_locale(__cloc); |
if (__clocm != __cloc) |
locale::facet::_S_destroy_c_locale(__clocm); |
} |
__catch(...) |
{ |
locale::facet::_S_destroy_c_locale(__cloc); |
if (__clocm != __cloc) |
locale::facet::_S_destroy_c_locale(__clocm); |
this->~_Impl(); |
__throw_exception_again; |
} |
} |
|
void |
locale::_Impl:: |
_M_replace_categories(const _Impl* __imp, category __cat) |
{ |
category __mask = 1; |
if (!_M_names[0] || !__imp->_M_names[0]) |
{ |
if (_M_names[0]) |
{ |
delete [] _M_names[0]; |
_M_names[0] = 0; // Unnamed. |
} |
|
for (size_t __ix = 0; __ix < _S_categories_size; ++__ix, __mask <<= 1) |
{ |
if (__mask & __cat) |
// Need to replace entry in _M_facets with other locale's info. |
_M_replace_category(__imp, _S_facet_categories[__ix]); |
} |
} |
else |
{ |
if (!_M_names[1]) |
{ |
// A full set of _M_names must be prepared, all identical |
// to _M_names[0] to begin with. Then, below, a few will |
// be replaced by the corresponding __imp->_M_names. I.e., |
// not a "simple" locale anymore (see locale::operator==). |
const size_t __len = std::strlen(_M_names[0]) + 1; |
for (size_t __i = 1; __i < _S_categories_size; ++__i) |
{ |
_M_names[__i] = new char[__len]; |
std::memcpy(_M_names[__i], _M_names[0], __len); |
} |
} |
|
for (size_t __ix = 0; __ix < _S_categories_size; ++__ix, __mask <<= 1) |
{ |
if (__mask & __cat) |
{ |
// Need to replace entry in _M_facets with other locale's info. |
_M_replace_category(__imp, _S_facet_categories[__ix]); |
|
// FIXME: Hack for libstdc++/29217: the numerical encodings |
// of the time and collate categories are swapped vs the |
// order of the names in locale::_S_categories. We'd like to |
// adjust the former (the latter is dictated by compatibility |
// with glibc) but we can't for binary compatibility. |
size_t __ix_name = __ix; |
if (__ix == 2 || __ix == 3) |
__ix_name = 5 - __ix; |
|
char* __src = __imp->_M_names[__ix_name] ? |
__imp->_M_names[__ix_name] : __imp->_M_names[0]; |
const size_t __len = std::strlen(__src) + 1; |
char* __new = new char[__len]; |
std::memcpy(__new, __src, __len); |
delete [] _M_names[__ix_name]; |
_M_names[__ix_name] = __new; |
} |
} |
} |
} |
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_GLIBCXX_END_NAMESPACE_VERSION |
} // namespace |