stdcpp/src/message_facets.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 02:56:42 +0300
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/*
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 * © Portions copyright (c) 2006-2007 Nokia Corporation.  All rights reserved.
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 * Copyright (c) 1999
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 * Silicon Graphics Computer Systems, Inc.
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 *
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 * Copyright (c) 1999 
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 * Boris Fomitchev
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 *
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 * This material is provided "as is", with absolutely no warranty expressed
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 * or implied. Any use is at your own risk.
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 *
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 * Permission to use or copy this software for any purpose is hereby granted 
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 * without fee, provided the above notices are retained on all copies.
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 * Permission to modify the code and to distribute modified code is granted,
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 * provided the above notices are retained, and a notice that the code was
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 * modified is included with the above copyright notice.
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 *
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 */ 
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#ifndef MESSAGE_FACETS_H
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# define MESSAGE_FACETS_H
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#include <string>
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#include <stl/_messages_facets.h>
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#include <stl/_ctype.h>
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// #include <istream>
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#include <typeinfo>
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#include <hash_map>
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#include "c_locale.h"
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_STLP_BEGIN_NAMESPACE
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// Forward declaration of an opaque type.
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struct _Catalog_locale_map;
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_Locale_messages* __acquire_messages(const char* name); 
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void __release_messages(_Locale_messages* cat);
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// Class _Catalog_locale_map.  The reason for this is that, internally,
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// a message string is always a char*.  We need a ctype facet to convert
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// a string to and from wchar_t, and the user is permitted to provide such
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// a facet when calling open().
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struct _Catalog_locale_map
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{
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  _Catalog_locale_map() : M(0) {}
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  ~_Catalog_locale_map() { if (M) delete M; }
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  void insert(int key, const locale& L);
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  locale lookup(int key) const;
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  void erase(int key);
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  hash_map<int, locale, hash<int>, equal_to<int> >* M;
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private:                        // Invalidate copy constructor and assignment
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  _Catalog_locale_map(const _Catalog_locale_map&);
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  void operator=(const _Catalog_locale_map&);
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};
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class _Messages {
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public:
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  typedef messages_base::catalog catalog;
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  _STLP_DECLSPEC _Messages();
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  virtual catalog     do_open(const string& __fn, const locale& __loc) const;
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  virtual string do_get(catalog __c, int __set, int __msgid,
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			const string& __dfault) const;
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# ifndef _STLP_NO_WCHAR_T
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  virtual wstring do_get(catalog __c, int __set, int __msgid,
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                             const wstring& __dfault) const;
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# endif
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  virtual void        do_close(catalog __c) const;
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  virtual _STLP_DECLSPEC ~_Messages();
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  bool _M_delete;
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};
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class _Messages_impl : public _Messages {
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public:
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  _Messages_impl(bool);
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  _Messages_impl(bool, _Locale_messages*);
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  catalog     do_open(const string& __fn, const locale& __loc) const;
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  string do_get(catalog __c, int __set, int __msgid,
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			const string& __dfault) const;
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# ifndef _STLP_NO_WCHAR_T
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  wstring do_get(catalog __c, int __set, int __msgid,
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		 const wstring& __dfault) const;
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# endif
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  void        do_close(catalog __c) const;
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  ~_Messages_impl();
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private:
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  _Locale_messages* _M_message_obj;
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  _Catalog_locale_map* _M_map;
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};
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_STLP_END_NAMESPACE
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#endif