// 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.
// 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/>.
#include <clocale>
#include <cstring>
#include <cstdlib>
#include <locale>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
using namespace __gnu_cxx;
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;
}
}
}
}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace