589 lines
15 KiB
C++
589 lines
15 KiB
C++
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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#include <clocale>
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#include <cstring>
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#include <cassert>
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#include <cctype>
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#include <cwctype> // For towupper, etc.
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#include <limits>
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#include <exception>
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#include <locale>
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#include <istream>
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#include <ostream>
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#include <bits/atomicity.h>
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namespace std
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{
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// Defined in globals.cc.
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extern locale c_locale;
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extern locale::_Impl c_locale_impl;
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extern locale::facet** facet_vec;
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// Definitions for static const data members of locale.
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const locale::category locale::none;
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const locale::category locale::ctype;
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const locale::category locale::numeric;
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const locale::category locale::collate;
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const locale::category locale::time;
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const locale::category locale::monetary;
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const locale::category locale::messages;
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const locale::category locale::all;
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locale::_Impl* locale::_S_classic;
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locale::_Impl* locale::_S_global;
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const size_t locale::_S_num_categories;
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// Definitions for locale::id of standard facets that are specialized.
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locale::id ctype<char>::id;
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locale::id codecvt<char, char, mbstate_t>::id;
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#ifdef _GLIBCPP_USE_WCHAR_T
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locale::id ctype<wchar_t>::id;
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locale::id codecvt<wchar_t, char, mbstate_t>::id;
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#endif
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// Definitions for static const data members of locale::id
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_Atomic_word locale::id::_S_highwater; // init'd to 0 by linker
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// Definitions for static const data members of locale::_Impl
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const locale::id* const
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locale::_Impl::_S_id_ctype[] =
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{
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&std::ctype<char>::id,
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&codecvt<char, char, mbstate_t>::id,
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#ifdef _GLIBCPP_USE_WCHAR_T
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&std::ctype<wchar_t>::id,
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&codecvt<wchar_t, char, mbstate_t>::id,
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#endif
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0
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};
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const locale::id* const
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locale::_Impl::_S_id_numeric[] =
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{
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&num_get<char>::id,
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&num_put<char>::id,
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&numpunct<char>::id,
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#ifdef _GLIBCPP_USE_WCHAR_T
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&num_get<wchar_t>::id,
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&num_put<wchar_t>::id,
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&numpunct<wchar_t>::id,
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#endif
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0
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};
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const locale::id* const
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locale::_Impl::_S_id_collate[] =
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{
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&std::collate<char>::id,
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#ifdef _GLIBCPP_USE_WCHAR_T
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&std::collate<wchar_t>::id,
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#endif
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0
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};
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const locale::id* const
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locale::_Impl::_S_id_time[] =
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{
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&__timepunct<char>::id,
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&time_get<char>::id,
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&time_put<char>::id,
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#ifdef _GLIBCPP_USE_WCHAR_T
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&__timepunct<wchar_t>::id,
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&time_get<wchar_t>::id,
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&time_put<wchar_t>::id,
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#endif
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0
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};
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const locale::id* const
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locale::_Impl::_S_id_monetary[] =
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{
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&money_get<char>::id,
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&money_put<char>::id,
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&moneypunct<char, false>::id,
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&moneypunct<char, true >::id,
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#ifdef _GLIBCPP_USE_WCHAR_T
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&money_get<wchar_t>::id,
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&money_put<wchar_t>::id,
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&moneypunct<wchar_t, false>::id,
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&moneypunct<wchar_t, true >::id,
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#endif
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0
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};
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const locale::id* const
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locale::_Impl::_S_id_messages[] =
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{
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&std::messages<char>::id,
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#ifdef _GLIBCPP_USE_WCHAR_T
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&std::messages<wchar_t>::id,
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#endif
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0
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};
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const locale::id* const* const
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locale::_Impl::_S_facet_categories[] =
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{
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// Order must match the decl order in class locale.
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locale::_Impl::_S_id_ctype,
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locale::_Impl::_S_id_numeric,
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locale::_Impl::_S_id_collate,
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locale::_Impl::_S_id_monetary,
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locale::_Impl::_S_id_time,
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locale::_Impl::_S_id_messages,
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0
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};
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locale::~locale() throw()
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{ _M_impl->_M_remove_reference(); }
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void
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locale::_M_coalesce(const locale& __base, const locale& __add,
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category __cat)
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{
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__cat = _S_normalize_category(__cat);
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_M_impl = new _Impl(*__base._M_impl, 1);
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try
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{ _M_impl->_M_replace_categories(__add._M_impl, __cat); }
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catch (...)
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{
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_M_impl->_M_remove_reference();
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__throw_exception_again;
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}
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}
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locale::locale() throw()
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{
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_S_initialize();
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(_M_impl = _S_global)->_M_add_reference();
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}
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locale::locale(const locale& __other) throw()
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{ (_M_impl = __other._M_impl)->_M_add_reference(); }
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// This is used to initialize global and classic locales, and
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// assumes that the _Impl objects are constructed correctly.
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locale::locale(_Impl* __ip) throw() : _M_impl(__ip)
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{ }
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locale::locale(const char* __s)
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{
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if (__s)
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{
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_S_initialize();
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if (strcmp(__s, "C") == 0 || strcmp(__s, "POSIX") == 0)
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(_M_impl = _S_classic)->_M_add_reference();
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else if (strcmp(__s, "") == 0)
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_M_impl = new _Impl(setlocale(LC_ALL, NULL), 1);
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else
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_M_impl = new _Impl(__s, 1);
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}
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else
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__throw_runtime_error("attempt to create locale from NULL name");
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}
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locale::locale(const locale& __base, const char* __s, category __cat)
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{
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// NB: There are complicated, yet more efficient ways to do
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// this. Building up locales on a per-category way is tedious, so
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// let's do it this way until people complain.
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locale __add(__s);
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_M_coalesce(__base, __add, __cat);
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}
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locale::locale(const locale& __base, const locale& __add, category __cat)
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{ _M_coalesce(__base, __add, __cat); }
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bool
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locale::operator==(const locale& __rhs) const throw()
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{
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string __name = this->name();
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return (_M_impl == __rhs._M_impl
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|| (__name != "*" && __name == __rhs.name()));
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}
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const locale&
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locale::operator=(const locale& __other) throw()
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{
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__other._M_impl->_M_add_reference();
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_M_impl->_M_remove_reference();
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_M_impl = __other._M_impl;
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return *this;
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}
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locale
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locale::global(const locale& __other)
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{
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// XXX MT
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_S_initialize();
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_Impl* __old = _S_global;
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__other._M_impl->_M_add_reference();
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_S_global = __other._M_impl;
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if (_S_global->_M_check_same_name()
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&& (strcmp(_S_global->_M_names[0], "*") != 0))
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setlocale(LC_ALL, __other.name().c_str());
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// Reference count sanity check: one reference removed for the
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// subsition of __other locale, one added by return-by-value. Net
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// difference: zero. When the returned locale object's destrutor
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// is called, then the reference count is decremented and possibly
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// destroyed.
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return locale(__old);
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}
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string
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locale::name() const
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{
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// Need some kind of separator character. This one was pretty much
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// arbitrarily chosen as to not conflict with glibc locales: the
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// exact formatting is not set in stone.
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const char __separator = '|';
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string __ret;
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if (_M_impl->_M_check_same_name())
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__ret = _M_impl->_M_names[0];
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else
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{
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for (size_t i = 0; i < _S_num_categories; ++i)
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{
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__ret += __separator;
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__ret += _M_impl->_M_names[i];
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}
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}
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return __ret;
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}
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const locale&
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locale::classic()
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{
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if (!_S_classic)
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{
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static _STL_mutex_lock __lock __STL_MUTEX_INITIALIZER;
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_STL_auto_lock __auto(__lock);
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try
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{
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// 26 Standard facets, 2 references.
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// One reference for _M_classic, one for _M_global
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facet** f = new(&facet_vec) facet*[_GLIBCPP_NUM_FACETS];
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for (size_t __i = 0; __i < _GLIBCPP_NUM_FACETS; ++__i)
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f[__i] = 0;
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_S_classic = new (&c_locale_impl) _Impl(f, 2, true);
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_S_global = _S_classic;
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new (&c_locale) locale(_S_classic);
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}
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catch(...)
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{
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// Just call destructor, so that locale_impl_c's memory is
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// not deallocated via a call to delete.
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if (_S_classic)
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_S_classic->~_Impl();
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_S_classic = _S_global = 0;
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__throw_exception_again;
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}
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}
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return c_locale;
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}
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locale::category
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locale::_S_normalize_category(category __cat)
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{
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int __ret = 0;
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if (__cat == none || (__cat & all) && !(__cat & ~all))
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__ret = __cat;
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else
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{
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// NB: May be a C-style "LC_ALL" category; convert.
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switch (__cat)
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{
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case LC_COLLATE:
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__ret = collate;
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break;
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case LC_CTYPE:
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__ret = ctype;
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break;
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case LC_MONETARY:
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__ret = monetary;
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break;
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case LC_NUMERIC:
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__ret = numeric;
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break;
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case LC_TIME:
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__ret = time;
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break;
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#ifdef _GLIBCPP_HAVE_LC_MESSAGES
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case LC_MESSAGES:
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__ret = messages;
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break;
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#endif
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case LC_ALL:
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__ret = all;
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break;
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default:
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__throw_runtime_error("bad locale category");
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}
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}
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return __ret;
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}
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__c_locale
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locale::facet::_S_c_locale;
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locale::facet::
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~facet() { }
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locale::facet::
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facet(size_t __refs) throw() : _M_references(__refs)
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{
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if (!_S_c_locale)
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_S_create_c_locale(_S_c_locale, "C");
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}
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void
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locale::facet::
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_M_add_reference() throw()
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{ __atomic_add(&_M_references, 1); }
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void
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locale::facet::
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_M_remove_reference() throw()
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{
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if (__exchange_and_add(&_M_references, -1) == 0)
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{
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try
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{ delete this; }
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catch (...)
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{ }
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}
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}
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locale::id::id()
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{ }
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// Definitions for static const data members of ctype_base.
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const ctype_base::mask ctype_base::space;
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const ctype_base::mask ctype_base::print;
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const ctype_base::mask ctype_base::cntrl;
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const ctype_base::mask ctype_base::upper;
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const ctype_base::mask ctype_base::lower;
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const ctype_base::mask ctype_base::alpha;
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const ctype_base::mask ctype_base::digit;
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const ctype_base::mask ctype_base::punct;
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const ctype_base::mask ctype_base::xdigit;
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const ctype_base::mask ctype_base::alnum;
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const ctype_base::mask ctype_base::graph;
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// Platform-specific initialization code for ctype tables.
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#include <bits/ctype_noninline.h>
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const size_t ctype<char>::table_size;
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ctype<char>::~ctype()
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{
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if (_M_c_locale_ctype != _S_c_locale)
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_S_destroy_c_locale(_M_c_locale_ctype);
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if (_M_del)
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delete[] this->table();
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}
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// These are dummy placeholders as these virtual functions are never called.
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bool
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ctype<char>::do_is(mask, char_type) const
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{ return false; }
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const char*
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ctype<char>::do_is(const char_type* __c, const char_type*, mask*) const
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{ return __c; }
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const char*
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ctype<char>::do_scan_is(mask, const char_type* __c, const char_type*) const
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{ return __c; }
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const char*
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ctype<char>::do_scan_not(mask, const char_type* __c, const char_type*) const
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{ return __c; }
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char
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ctype<char>::do_widen(char __c) const
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{ return __c; }
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const char*
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ctype<char>::do_widen(const char* __lo, const char* __hi, char* __dest) const
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{
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memcpy(__dest, __lo, __hi - __lo);
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return __hi;
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}
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char
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ctype<char>::do_narrow(char __c, char /*__dfault*/) const
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{ return __c; }
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const char*
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ctype<char>::do_narrow(const char* __lo, const char* __hi,
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char /*__dfault*/, char* __dest) const
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{
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memcpy(__dest, __lo, __hi - __lo);
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return __hi;
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}
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#ifdef _GLIBCPP_USE_WCHAR_T
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ctype<wchar_t>::ctype(size_t __refs)
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: __ctype_abstract_base<wchar_t>(__refs)
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{ _M_c_locale_ctype = _S_c_locale; }
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ctype<wchar_t>::ctype(__c_locale __cloc, size_t __refs)
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: __ctype_abstract_base<wchar_t>(__refs)
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{ _M_c_locale_ctype = _S_clone_c_locale(__cloc); }
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ctype<wchar_t>::~ctype()
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{
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if (_M_c_locale_ctype != _S_c_locale)
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_S_destroy_c_locale(_M_c_locale_ctype);
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}
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template<>
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ctype_byname<wchar_t>::ctype_byname(const char* __s, size_t __refs)
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: ctype<wchar_t>(__refs)
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{
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if (_M_c_locale_ctype != _S_c_locale)
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_S_destroy_c_locale(_M_c_locale_ctype);
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_S_create_c_locale(_M_c_locale_ctype, __s);
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}
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#endif
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// Definitions for static const data members of time_base
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template<>
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const char*
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__timepunct<char>::_S_timezones[14] =
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{
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"GMT", "HST", "AKST", "PST", "MST", "CST", "EST", "AST", "NST", "CET",
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"IST", "EET", "CST", "JST"
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};
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<>
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const wchar_t*
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__timepunct<wchar_t>::_S_timezones[14] =
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{
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L"GMT", L"HST", L"AKST", L"PST", L"MST", L"CST", L"EST", L"AST",
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L"NST", L"CET", L"IST", L"EET", L"CST", L"JST"
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};
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#endif
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// Definitions for static const data members of money_base
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const money_base::pattern
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money_base::_S_default_pattern = { {symbol, sign, none, value} };
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template<>
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const ctype<char>&
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use_facet<ctype<char> >(const locale& __loc)
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{
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size_t __i = ctype<char>::id._M_id();
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const locale::_Impl* __tmp = __loc._M_impl;
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return static_cast<const ctype<char>&>(*(__tmp->_M_facets[__i]));
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}
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<>
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const ctype<wchar_t>&
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use_facet<ctype<wchar_t> >(const locale& __loc)
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{
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size_t __i = ctype<wchar_t>::id._M_id();
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const locale::_Impl* __tmp = __loc._M_impl;
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return static_cast<const ctype<wchar_t>&>(*(__tmp->_M_facets[__i]));
|
|
}
|
|
#endif
|
|
|
|
const char __num_base::_S_atoms[] = "0123456789eEabcdfABCDF";
|
|
|
|
bool
|
|
__num_base::_S_format_float(const ios_base& __io, char* __fptr, char __mod,
|
|
streamsize __prec)
|
|
{
|
|
bool __incl_prec = false;
|
|
ios_base::fmtflags __flags = __io.flags();
|
|
*__fptr++ = '%';
|
|
// [22.2.2.2.2] Table 60
|
|
if (__flags & ios_base::showpos)
|
|
*__fptr++ = '+';
|
|
if (__flags & ios_base::showpoint)
|
|
*__fptr++ = '#';
|
|
// As per [22.2.2.2.2.11]
|
|
if (__flags & ios_base::fixed || __prec > 0)
|
|
{
|
|
*__fptr++ = '.';
|
|
*__fptr++ = '*';
|
|
__incl_prec = true;
|
|
}
|
|
if (__mod)
|
|
*__fptr++ = __mod;
|
|
ios_base::fmtflags __fltfield = __flags & ios_base::floatfield;
|
|
// [22.2.2.2.2] Table 58
|
|
if (__fltfield == ios_base::fixed)
|
|
*__fptr++ = 'f';
|
|
else if (__fltfield == ios_base::scientific)
|
|
*__fptr++ = (__flags & ios_base::uppercase) ? 'E' : 'e';
|
|
else
|
|
*__fptr++ = (__flags & ios_base::uppercase) ? 'G' : 'g';
|
|
*__fptr = '\0';
|
|
return __incl_prec;
|
|
}
|
|
|
|
void
|
|
__num_base::_S_format_int(const ios_base& __io, char* __fptr, char __mod,
|
|
char __modl)
|
|
{
|
|
ios_base::fmtflags __flags = __io.flags();
|
|
*__fptr++ = '%';
|
|
// [22.2.2.2.2] Table 60
|
|
if (__flags & ios_base::showpos)
|
|
*__fptr++ = '+';
|
|
if (__flags & ios_base::showbase)
|
|
*__fptr++ = '#';
|
|
*__fptr++ = 'l';
|
|
|
|
// For long long types.
|
|
if (__modl)
|
|
*__fptr++ = __modl;
|
|
|
|
ios_base::fmtflags __bsefield = __flags & ios_base::basefield;
|
|
if (__bsefield == ios_base::hex)
|
|
*__fptr++ = (__flags & ios_base::uppercase) ? 'X' : 'x';
|
|
else if (__bsefield == ios_base::oct)
|
|
*__fptr++ = 'o';
|
|
else
|
|
*__fptr++ = __mod;
|
|
*__fptr = '\0';
|
|
}
|
|
} // namespace std
|
|
|