498 lines
13 KiB
C
498 lines
13 KiB
C
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// Locale support -*- C++ -*-
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// Copyright (C) 1997-2000 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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//
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// ISO C++ 14882: 22.1 Locales
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//
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#ifndef _CPP_BITS_LOCCORE_H
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#define _CPP_BITS_LOCCORE_H 1
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#include <bits/c++config.h>
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#include <bits/std_climits.h> // For CHAR_BIT
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#include <bits/std_string.h> // For string
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#include <bits/std_cctype.h> // For isspace, etc.
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namespace std
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{
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// _Count_ones: compile-time computation of number of 1-bits in a value N
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// This takes only 5 (or 6) instantiations, doing recursive descent
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// in parallel -- ncm
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template<unsigned _Num, int _Shift = (sizeof(unsigned) * CHAR_BIT)/2,
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unsigned _Mask = (~0u >> _Shift) >
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struct _Count_ones;
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template<unsigned _Num, unsigned _Mask>
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struct _Count_ones<_Num,0,_Mask>
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{ static const unsigned _S_count = _Num; };
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template<unsigned _Num, int _Shift, unsigned _Mask>
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struct _Count_ones
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{
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static const unsigned _S_halfcount =
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_Count_ones<_Num, _Shift/2, (_Mask^((~_Mask)>>(_Shift/2))) >::_S_count;
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static const unsigned _S_count
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= (_S_halfcount&_Mask) + ((_S_halfcount>>_Shift)&_Mask);
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};
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// 22.1.1 Locale
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template<typename _Tp> class allocator;
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template<typename _Tp, typename _Alloc> class vector;
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class locale;
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template<typename _Facet>
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const _Facet&
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use_facet(const locale&);
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template<typename _Facet>
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bool
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has_facet(const locale&) throw();
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// 22.1.3 Convenience interfaces
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template<typename _CharT>
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inline bool
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isspace(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isprint(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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iscntrl(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isupper(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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islower(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isalpha(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isdigit(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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ispunct(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isxdigit(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isalnum(_CharT, const locale&);
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template<typename _CharT>
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inline bool
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isgraph(_CharT, const locale&);
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template<typename _CharT>
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inline _CharT
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toupper(_CharT, const locale&);
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template<typename _CharT>
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inline _CharT
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tolower(_CharT, const locale&);
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// 22.2.1 and 22.2.1.3 ctype
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class ctype_base;
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template<typename _CharT>
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class ctype;
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template<> class ctype<char>;
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<> class ctype<wchar_t>;
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#endif
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template<typename _CharT>
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class ctype_byname;
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// NB: Specialized for char and wchar_t in locfacets.h.
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class codecvt_base;
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template<typename _InternT, typename _ExternT, typename _StateT>
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class codecvt;
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template<> class codecvt<char, char, mbstate_t>;
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<> class codecvt<wchar_t, char, mbstate_t>;
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#endif
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template<typename _InternT, typename _ExternT, typename _StateT>
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class codecvt_byname;
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template<> class codecvt_byname<char, char, mbstate_t>;
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<> class codecvt_byname<wchar_t, char, mbstate_t>;
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#endif
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// 22.2.2 and 22.2.3 numeric
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template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
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class num_get;
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template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
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class num_put;
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template<typename _CharT> class numpunct;
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template<typename _CharT> class numpunct_byname;
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// 22.2.4 collation
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template<typename _CharT>
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class collate;
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template<> class collate<char>;
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#ifdef _GLIBCPP_USE_WCHAR_T
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template<> class collate<wchar_t>;
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#endif
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template<typename _CharT> class
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collate_byname;
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// 22.2.5 date and time
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class time_base;
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template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
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class time_get;
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template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
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class time_get_byname;
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template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
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class time_put;
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template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
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class time_put_byname;
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// 22.2.6 money
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class money_base;
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template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
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class money_get;
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template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
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class money_put;
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template<typename _CharT, bool _Intl = false>
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class moneypunct;
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template<typename _CharT, bool _Intl = false>
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class moneypunct_byname;
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// 22.2.7 message retrieval
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class messages_base;
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template<typename _CharT>
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class messages;
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template<typename _CharT>
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class messages_byname;
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// 22.1.1 Class locale
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class locale
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{
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// Forwrd decls and friends:
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class _Impl;
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friend _Impl;
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template<typename _Facet>
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friend const _Facet&
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use_facet(const locale&);
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template<typename _Facet>
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friend bool
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has_facet(const locale&) throw();
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public:
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// Types:
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class facet;
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class id;
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typedef int category;
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// Category values:
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// NB much depends on the order in which these appear:
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static const category none = 0;
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static const category collate = 0x0100;
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static const category ctype = 0x0200;
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static const category monetary = 0x0400;
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static const category numeric = 0x0800;
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static const category time = 0x1000;
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static const category messages = 0x2000;
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static const category all = (collate | ctype | monetary |
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numeric | time | messages);
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// Construct/copy/destroy:
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inline
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locale() throw();
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inline
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locale(const locale& __other) throw();
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explicit
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locale(const char* __std_name);
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locale(const locale& __other, const char* __std_name, category __cats);
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locale(const locale& __other, const locale& __one, category __cats);
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template<typename _Facet>
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locale(const locale& __other, _Facet* __f);
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inline
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~locale() throw();
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const locale&
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operator=(const locale& __other) throw();
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template<typename _Facet>
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locale
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combine(const locale& __other);
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// Locale operations:
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string
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name() const;
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bool
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operator==(const locale& __other) const throw ();
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inline bool
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operator!=(const locale& __other) const throw ()
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{ return !(operator==(__other)); }
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template<typename _Char, typename _Traits, typename _Alloc>
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bool
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operator()(const basic_string<_Char,_Traits,_Alloc>& __s1,
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const basic_string<_Char,_Traits,_Alloc>& __s2) const;
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// Global locale objects:
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static locale
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global(const locale&);
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static const locale&
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classic();
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private:
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_Impl* _M_impl; // The (shared) implementation
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static _Impl* _S_classic; // The one true C reference locale
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static _Impl* _S_global; // Current global reference locale
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explicit
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locale(_Impl*) throw();
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static inline void
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_S_initialize()
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{ if (!_S_classic) classic(); }
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static int
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_S_normalize_category(int);
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static const int
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_S_num_categories = _Count_ones<all>::_S_count;
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};
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// locale implementation object
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class locale::_Impl
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{
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typedef vector<facet*, allocator<facet*> > __vec_facet;
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typedef vector<string, allocator<string> > __vec_string;
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// Friends:
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friend class locale;
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friend class facet;
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template<typename _Facet>
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friend const _Facet&
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use_facet(const locale&);
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template<typename _Facet>
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friend bool
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has_facet(const locale&) throw();
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size_t _M_num_references;
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__vec_facet* _M_facets;
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__vec_string* _M_category_names;
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bool _M_has_name;
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bool _M_cached_name_ok;
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string _M_cached_name;
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inline void
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_M_add_reference() throw()
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{ ++_M_num_references; } // XXX MT
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inline void
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_M_remove_reference() throw()
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{
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if (_M_num_references-- == 0) // XXX MT
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{
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try {
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delete this;
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}
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catch(...) {
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}
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}
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}
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_Impl(const _Impl&, size_t __refs);
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_Impl(const _Impl&, const string&, category, size_t __refs);
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_Impl(size_t __facets, size_t __refs);
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~_Impl() throw();
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void
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_M_replace_categories(const _Impl*, category);
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void
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_M_replace_category(const _Impl*, const locale::id* const*);
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void
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_M_replace_facet(const _Impl*, const locale::id*);
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void
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_M_install_facet(const locale::id*, facet*);
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template<typename _Facet>
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inline void
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_M_init_facet(_Facet* __facet)
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{ _M_install_facet(&_Facet::id, __facet); }
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void
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_M_construct_collate(const char*);
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void
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_M_construct_ctype(const char*);
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void
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_M_construct_monetary(const char*);
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void
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_M_construct_numeric(const char*);
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void
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_M_construct_time(const char*);
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void
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_M_construct_messages(const char*);
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category
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_M_normalize_category_names(const string&, category __cats);
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static const locale::id* const _S_id_collate[];
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static const locale::id* const _S_id_ctype[];
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static const locale::id* const _S_id_monetary[];
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static const locale::id* const _S_id_numeric[];
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static const locale::id* const _S_id_time[];
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static const locale::id* const _S_id_messages[];
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static const locale::id* const* const _S_facet_categories[];
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};
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// class locale inlines, that need declaration of locale::_Imp
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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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} // XXX MT
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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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template<typename _Facet>
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locale::locale(const locale& __other, _Facet* __f)
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{
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_M_impl = new _Impl(*__other._M_impl, 0);
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_M_impl->_M_install_facet(&_Facet::id, __f);
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_M_impl->_M_has_name = false;
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}
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locale::~locale() throw()
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{ _M_impl->_M_remove_reference(); }
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// 22.1.1.1.2 Class locale::facet
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class locale::facet
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{
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friend class locale;
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friend class locale::_Impl;
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protected:
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explicit
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facet(size_t __refs = 0) throw();
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virtual
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~facet() {};
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private:
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size_t _M_num_references;
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void
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_M_add_reference() throw();
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void
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_M_remove_reference() throw();
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facet(const facet&); // not defined
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void
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operator=(const facet&); // not defined
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};
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// 22.1.1.1.3 Class locale::id
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class locale::id
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{
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friend class locale;
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friend class locale::_Impl;
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template<typename _Facet>
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friend const _Facet&
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use_facet(const locale&);
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template<typename _Facet>
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friend bool
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has_facet(const locale&) throw ();
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public:
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id() {};
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private:
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// NB: there is no accessor for _M_index because it may be used
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// before the constructor is run; the effect of calling a member
|
||
|
// function (even an inline) would be undefined.
|
||
|
mutable size_t _M_index;
|
||
|
static size_t _S_highwater; // last id number assigned
|
||
|
|
||
|
void
|
||
|
operator=(const id&); // not defined
|
||
|
|
||
|
id(const id&); // not defined
|
||
|
};
|
||
|
|
||
|
template<typename _Facet>
|
||
|
const _Facet&
|
||
|
use_facet(const locale& __loc);
|
||
|
|
||
|
template<typename _Facet>
|
||
|
bool
|
||
|
has_facet(const locale& __loc) throw();
|
||
|
|
||
|
} // namespace std
|
||
|
|
||
|
#endif /* _CPP_BITS_LOCCORE_H */
|
||
|
|
||
|
// Local Variables:
|
||
|
// mode:c++
|
||
|
// End:
|
||
|
|