messages_members.h

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00001 // std::messages implementation details, GNU version -*- C++ -*-
00002 
00003 // Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 2, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // You should have received a copy of the GNU General Public License along
00017 // with this library; see the file COPYING.  If not, write to the Free
00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00019 // USA.
00020 
00021 // As a special exception, you may use this file as part of a free software
00022 // library without restriction.  Specifically, if other files instantiate
00023 // templates or use macros or inline functions from this file, or you compile
00024 // this file and link it with other files to produce an executable, this
00025 // file does not by itself cause the resulting executable to be covered by
00026 // the GNU General Public License.  This exception does not however
00027 // invalidate any other reasons why the executable file might be covered by
00028 // the GNU General Public License.
00029 
00030 //
00031 // ISO C++ 14882: 22.2.7.1.2  messages functions
00032 //
00033 
00034 // Written by Benjamin Kosnik <bkoz@redhat.com>
00035 
00036   // Non-virtual member functions.
00037   template<typename _CharT>
00038      messages<_CharT>::messages(size_t __refs)
00039      : facet(__refs), _M_c_locale_messages(_S_get_c_locale()), 
00040      _M_name_messages(_S_get_c_name())
00041      { }
00042 
00043   template<typename _CharT>
00044      messages<_CharT>::messages(__c_locale __cloc, const char* __s, 
00045                 size_t __refs) 
00046      : facet(__refs), _M_c_locale_messages(_S_clone_c_locale(__cloc)),
00047      _M_name_messages(__s)
00048      {
00049        char* __tmp = new char[std::strlen(__s) + 1];
00050        std::strcpy(__tmp, __s);
00051        _M_name_messages = __tmp;
00052      }
00053 
00054   template<typename _CharT>
00055     typename messages<_CharT>::catalog 
00056     messages<_CharT>::open(const basic_string<char>& __s, const locale& __loc, 
00057                const char* __dir) const
00058     { 
00059       bindtextdomain(__s.c_str(), __dir);
00060       return this->do_open(__s, __loc); 
00061     }
00062 
00063   // Virtual member functions.
00064   template<typename _CharT>
00065     messages<_CharT>::~messages()
00066     { 
00067       if (_M_name_messages != _S_get_c_name())
00068     delete [] _M_name_messages;
00069       _S_destroy_c_locale(_M_c_locale_messages); 
00070     }
00071 
00072   template<typename _CharT>
00073     typename messages<_CharT>::catalog 
00074     messages<_CharT>::do_open(const basic_string<char>& __s, 
00075                   const locale&) const
00076     { 
00077       // No error checking is done, assume the catalog exists and can
00078       // be used.
00079       textdomain(__s.c_str());
00080       return 0;
00081     }
00082 
00083   template<typename _CharT>
00084     void    
00085     messages<_CharT>::do_close(catalog) const 
00086     { }
00087 
00088    // messages_byname
00089    template<typename _CharT>
00090      messages_byname<_CharT>::messages_byname(const char* __s, size_t __refs)
00091      : messages<_CharT>(__refs) 
00092      { 
00093        if (this->_M_name_messages != locale::facet::_S_get_c_name())
00094      delete [] this->_M_name_messages;
00095        char* __tmp = new char[std::strlen(__s) + 1];
00096        std::strcpy(__tmp, __s);
00097        this->_M_name_messages = __tmp;
00098 
00099        if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
00100      {
00101        this->_S_destroy_c_locale(this->_M_c_locale_messages);
00102        this->_S_create_c_locale(this->_M_c_locale_messages, __s); 
00103      }
00104      }

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