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The C and C++ Include Header Files

/usr/include/x86_64-linux-gnu/c++/11/bits/messages_members.h


$ cat -n /usr/include/x86_64-linux-gnu/c++/11/bits/messages_members.h

     1	// std::messages implementation details, GNU version -*- C++ -*-
     2	
     3	// Copyright (C) 2001-2021 Free Software Foundation, Inc.
     4	//
     5	// This file is part of the GNU ISO C++ Library.  This library is free
     6	// software; you can redistribute it and/or modify it under the
     7	// terms of the GNU General Public License as published by the
     8	// Free Software Foundation; either version 3, or (at your option)
     9	// any later version.
    10	
    11	// This library is distributed in the hope that it will be useful,
    12	// but WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14	// GNU General Public License for more details.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	/** @file bits/messages_members.h
    26	 *  This is an internal header file, included by other library headers.
    27	 *  Do not attempt to use it directly. @headername{locale}
    28	 */
    29	
    30	//
    31	// ISO C++ 14882: 22.2.7.1.2  messages functions
    32	//
    33	
    34	// Written by Benjamin Kosnik <bkoz@redhat.com>
    35	
    36	#include <libintl.h>
    37	
    38	namespace std _GLIBCXX_VISIBILITY(default)
    39	{
    40	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    41	
    42	  // Non-virtual member functions.
    43	  template<typename _CharT>
    44	    messages<_CharT>::messages(size_t __refs)
    45	    : facet(__refs), _M_c_locale_messages(_S_get_c_locale()),
    46	      _M_name_messages(_S_get_c_name())
    47	    { }
    48	
    49	  template<typename _CharT>
    50	    messages<_CharT>::messages(__c_locale __cloc, const char* __s,
    51				       size_t __refs)
    52	    : facet(__refs), _M_c_locale_messages(0), _M_name_messages(0)
    53	    {
    54	      if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
    55		{
    56		  const size_t __len = __builtin_strlen(__s) + 1;
    57		  char* __tmp = new char[__len];
    58		  __builtin_memcpy(__tmp, __s, __len);
    59		  _M_name_messages = __tmp;
    60		}
    61	      else
    62		_M_name_messages = _S_get_c_name();
    63	
    64	      // Last to avoid leaking memory if new throws.
    65	      _M_c_locale_messages = _S_clone_c_locale(__cloc);
    66	    }
    67	
    68	  template<typename _CharT>
    69	    typename messages<_CharT>::catalog
    70	    messages<_CharT>::open(const basic_string<char>& __s, const locale& __loc,
    71				   const char* __dir) const
    72	    {
    73	      bindtextdomain(__s.c_str(), __dir);
    74	      return this->do_open(__s, __loc);
    75	    }
    76	
    77	  // Virtual member functions.
    78	  template<typename _CharT>
    79	    messages<_CharT>::~messages()
    80	    {
    81	      if (_M_name_messages != _S_get_c_name())
    82		delete [] _M_name_messages;
    83	      _S_destroy_c_locale(_M_c_locale_messages);
    84	    }
    85	
    86	  template<typename _CharT>
    87	    typename messages<_CharT>::catalog
    88	    messages<_CharT>::do_open(const basic_string<char>& __s,
    89				      const locale&) const
    90	    {
    91	      // No error checking is done, assume the catalog exists and can
    92	      // be used.
    93	      textdomain(__s.c_str());
    94	      return 0;
    95	    }
    96	
    97	  template<typename _CharT>
    98	    void
    99	    messages<_CharT>::do_close(catalog) const
   100	    { }
   101	
   102	  // messages_byname
   103	  template<typename _CharT>
   104	    messages_byname<_CharT>::messages_byname(const char* __s, size_t __refs)
   105	    : messages<_CharT>(__refs)
   106	    {
   107	      if (this->_M_name_messages != locale::facet::_S_get_c_name())
   108		{
   109		  delete [] this->_M_name_messages;
   110		  if (__builtin_strcmp(__s, locale::facet::_S_get_c_name()) != 0)
   111		    {
   112		      const size_t __len = __builtin_strlen(__s) + 1;
   113		      char* __tmp = new char[__len];
   114		      __builtin_memcpy(__tmp, __s, __len);
   115		      this->_M_name_messages = __tmp;
   116		    }
   117		  else
   118		    this->_M_name_messages = locale::facet::_S_get_c_name();
   119		}
   120	
   121	      if (__builtin_strcmp(__s, "C") != 0
   122		  && __builtin_strcmp(__s, "POSIX") != 0)
   123		{
   124		  this->_S_destroy_c_locale(this->_M_c_locale_messages);
   125		  this->_S_create_c_locale(this->_M_c_locale_messages, __s);
   126		}
   127	    }
   128	
   129	   //Specializations.
   130	  template<>
   131	    typename messages<char>::catalog
   132	    messages<char>::do_open(const basic_string<char>&,
   133				    const locale&) const;
   134	
   135	  template<>
   136	    void
   137	    messages<char>::do_close(catalog) const;
   138	
   139	#ifdef _GLIBCXX_USE_WCHAR_T
   140	  template<>
   141	    typename messages<wchar_t>::catalog
   142	    messages<wchar_t>::do_open(const basic_string<char>&,
   143				       const locale&) const;
   144	
   145	  template<>
   146	    void
   147	    messages<wchar_t>::do_close(catalog) const;
   148	#endif
   149	
   150	_GLIBCXX_END_NAMESPACE_VERSION
   151	} // namespace