libstdc++
messages_members.h
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00001 // std::messages implementation details, GNU version -*- C++ -*-
00002 
00003 // Copyright (C) 2001-2013 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 /** @file bits/messages_members.h
00026  *  This is an internal header file, included by other library headers.
00027  *  Do not attempt to use it directly. @headername{locale}
00028  */
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 #include <libintl.h>
00037 
00038 namespace std _GLIBCXX_VISIBILITY(default)
00039 {
00040 _GLIBCXX_BEGIN_NAMESPACE_VERSION
00041 
00042   // Non-virtual member functions.
00043   template<typename _CharT>
00044      messages<_CharT>::messages(size_t __refs)
00045      : facet(__refs), _M_c_locale_messages(_S_get_c_locale()), 
00046        _M_name_messages(_S_get_c_name())
00047      { }
00048 
00049   template<typename _CharT>
00050      messages<_CharT>::messages(__c_locale __cloc, const char* __s, 
00051                 size_t __refs) 
00052      : facet(__refs), _M_c_locale_messages(0), _M_name_messages(0)
00053      {
00054        if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
00055      {
00056        const size_t __len = __builtin_strlen(__s) + 1;
00057        char* __tmp = new char[__len];
00058        __builtin_memcpy(__tmp, __s, __len);
00059        _M_name_messages = __tmp;
00060      }
00061        else
00062      _M_name_messages = _S_get_c_name();
00063 
00064        // Last to avoid leaking memory if new throws.
00065        _M_c_locale_messages = _S_clone_c_locale(__cloc);
00066      }
00067 
00068   template<typename _CharT>
00069     typename messages<_CharT>::catalog 
00070     messages<_CharT>::open(const basic_string<char>& __s, const locale& __loc, 
00071                const char* __dir) const
00072     { 
00073       bindtextdomain(__s.c_str(), __dir);
00074       return this->do_open(__s, __loc); 
00075     }
00076 
00077   // Virtual member functions.
00078   template<typename _CharT>
00079     messages<_CharT>::~messages()
00080     { 
00081       if (_M_name_messages != _S_get_c_name())
00082     delete [] _M_name_messages;
00083       _S_destroy_c_locale(_M_c_locale_messages); 
00084     }
00085 
00086   template<typename _CharT>
00087     typename messages<_CharT>::catalog 
00088     messages<_CharT>::do_open(const basic_string<char>& __s, 
00089                   const locale&) const
00090     { 
00091       // No error checking is done, assume the catalog exists and can
00092       // be used.
00093       textdomain(__s.c_str());
00094       return 0;
00095     }
00096 
00097   template<typename _CharT>
00098     void    
00099     messages<_CharT>::do_close(catalog) const 
00100     { }
00101 
00102    // messages_byname
00103    template<typename _CharT>
00104      messages_byname<_CharT>::messages_byname(const char* __s, size_t __refs)
00105      : messages<_CharT>(__refs) 
00106      { 
00107        if (this->_M_name_messages != locale::facet::_S_get_c_name())
00108      {
00109        delete [] this->_M_name_messages;
00110        if (__builtin_strcmp(__s, locale::facet::_S_get_c_name()) != 0)
00111          {
00112            const size_t __len = __builtin_strlen(__s) + 1;
00113            char* __tmp = new char[__len];
00114            __builtin_memcpy(__tmp, __s, __len);
00115            this->_M_name_messages = __tmp;
00116          }
00117        else
00118          this->_M_name_messages = locale::facet::_S_get_c_name();
00119      }
00120 
00121        if (__builtin_strcmp(__s, "C") != 0
00122        && __builtin_strcmp(__s, "POSIX") != 0)
00123      {
00124        this->_S_destroy_c_locale(this->_M_c_locale_messages);
00125        this->_S_create_c_locale(this->_M_c_locale_messages, __s); 
00126      }
00127      }
00128 
00129 _GLIBCXX_END_NAMESPACE_VERSION
00130 } // namespace