messages_members.h

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00001 // std::messages implementation details, GNU version -*- C++ -*-
00002 
00003 // Copyright (C) 2001, 2002, 2003, 2004, 2005 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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 /** @file messages_members.h
00031  *  This is an internal header file, included by other library headers.
00032  *  You should not attempt to use it directly.
00033  */
00034 
00035 //
00036 // ISO C++ 14882: 22.2.7.1.2  messages functions
00037 //
00038 
00039 // Written by Benjamin Kosnik <bkoz@redhat.com>
00040 
00041 _GLIBCXX_BEGIN_NAMESPACE(std)
00042 
00043   // Non-virtual member functions.
00044   template<typename _CharT>
00045      messages<_CharT>::messages(size_t __refs)
00046      : facet(__refs), _M_c_locale_messages(_S_get_c_locale()), 
00047        _M_name_messages(_S_get_c_name())
00048      { }
00049 
00050   template<typename _CharT>
00051      messages<_CharT>::messages(__c_locale __cloc, const char* __s, 
00052                 size_t __refs) 
00053      : facet(__refs), _M_c_locale_messages(NULL), _M_name_messages(NULL)
00054      {
00055        const size_t __len = std::strlen(__s) + 1;
00056        char* __tmp = new char[__len];
00057        std::memcpy(__tmp, __s, __len);
00058        _M_name_messages = __tmp;
00059 
00060        // Last to avoid leaking memory if new throws.
00061        _M_c_locale_messages = _S_clone_c_locale(__cloc);
00062      }
00063 
00064   template<typename _CharT>
00065     typename messages<_CharT>::catalog 
00066     messages<_CharT>::open(const basic_string<char>& __s, const locale& __loc, 
00067                const char* __dir) const
00068     { 
00069       bindtextdomain(__s.c_str(), __dir);
00070       return this->do_open(__s, __loc); 
00071     }
00072 
00073   // Virtual member functions.
00074   template<typename _CharT>
00075     messages<_CharT>::~messages()
00076     { 
00077       if (_M_name_messages != _S_get_c_name())
00078     delete [] _M_name_messages;
00079       _S_destroy_c_locale(_M_c_locale_messages); 
00080     }
00081 
00082   template<typename _CharT>
00083     typename messages<_CharT>::catalog 
00084     messages<_CharT>::do_open(const basic_string<char>& __s, 
00085                   const locale&) const
00086     { 
00087       // No error checking is done, assume the catalog exists and can
00088       // be used.
00089       textdomain(__s.c_str());
00090       return 0;
00091     }
00092 
00093   template<typename _CharT>
00094     void    
00095     messages<_CharT>::do_close(catalog) const 
00096     { }
00097 
00098    // messages_byname
00099    template<typename _CharT>
00100      messages_byname<_CharT>::messages_byname(const char* __s, size_t __refs)
00101      : messages<_CharT>(__refs) 
00102      { 
00103        if (this->_M_name_messages != locale::facet::_S_get_c_name())
00104      delete [] this->_M_name_messages;
00105        char* __tmp = new char[std::strlen(__s) + 1];
00106        std::strcpy(__tmp, __s);
00107        this->_M_name_messages = __tmp;
00108 
00109        if (std::strcmp(__s, "C") != 0 && std::strcmp(__s, "POSIX") != 0)
00110      {
00111        this->_S_destroy_c_locale(this->_M_c_locale_messages);
00112        this->_S_create_c_locale(this->_M_c_locale_messages, __s); 
00113      }
00114      }
00115 
00116 _GLIBCXX_END_NAMESPACE

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