libstdc++-v3/config/locale/gnu/messages_members.h

   1 // std::messages implementation details, GNU version -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // Under Section 7 of GPL version 3, you are granted additional
  18 // permissions described in the GCC Runtime Library Exception, version
  19 // 3.1, as published by the Free Software Foundation.
  20
  21 // You should have received a copy of the GNU General Public License and
  22 // a copy of the GCC Runtime Library Exception along with this program;
  23 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 // <http://www.gnu.org/licenses/>.
  25
  26 /** @file bits/messages_members.h
  27  *  This is an internal header file, included by other library headers.
  28  *  Do not attempt to use it directly. @headername{locale}
  29  */
  30
  31 //
  32 // ISO C++ 14882: 22.2.7.1.2  messages functions
  33 //
  34
  35 // Written by Benjamin Kosnik <bkoz@redhat.com>
  36
  37 #include <libintl.h>
  38
  39 namespace std _GLIBCXX_VISIBILITY(default)
  40 {
  41 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  42
  43   // Non-virtual member functions.
  44   template<typename _CharT>
  45      messages<_CharT>::messages(size_t __refs)
  46      : facet(__refs), _M_c_locale_messages(_S_get_c_locale()),
  47        _M_name_messages(_S_get_c_name())
  48      { }
  49
  50   template<typename _CharT>
  51      messages<_CharT>::messages(__c_locale __cloc, const char* __s,
  52                                 size_t __refs)
  53      : facet(__refs), _M_c_locale_messages(0), _M_name_messages(0)
  54      {
  55        if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
  56          {
  57            const size_t __len = __builtin_strlen(__s) + 1;
  58            char* __tmp = new char[__len];
  59            __builtin_memcpy(__tmp, __s, __len);
  60            _M_name_messages = __tmp;
  61          }
  62        else
  63          _M_name_messages = _S_get_c_name();
  64
  65        // Last to avoid leaking memory if new throws.
  66        _M_c_locale_messages = _S_clone_c_locale(__cloc);
  67      }
  68
  69   template<typename _CharT>
  70     typename messages<_CharT>::catalog
  71     messages<_CharT>::open(const basic_string<char>& __s, const locale& __loc,
  72                            const char* __dir) const
  73     {
  74       bindtextdomain(__s.c_str(), __dir);
  75       return this->do_open(__s, __loc);
  76     }
  77
  78   // Virtual member functions.
  79   template<typename _CharT>
  80     messages<_CharT>::~messages()
  81     {
  82       if (_M_name_messages != _S_get_c_name())
  83         delete [] _M_name_messages;
  84       _S_destroy_c_locale(_M_c_locale_messages);
  85     }
  86
  87   template<typename _CharT>
  88     typename messages<_CharT>::catalog
  89     messages<_CharT>::do_open(const basic_string<char>& __s,
  90                               const locale&) const
  91     {
  92       // No error checking is done, assume the catalog exists and can
  93       // be used.
  94       textdomain(__s.c_str());
  95       return 0;
  96     }
  97
  98   template<typename _CharT>
  99     void
 100     messages<_CharT>::do_close(catalog) const
 101     { }
 102
 103    // messages_byname
 104    template<typename _CharT>
 105      messages_byname<_CharT>::messages_byname(const char* __s, size_t __refs)
 106      : messages<_CharT>(__refs)
 107      {
 108        if (this->_M_name_messages != locale::facet::_S_get_c_name())
 109          {
 110            delete [] this->_M_name_messages;
 111            if (__builtin_strcmp(__s, locale::facet::_S_get_c_name()) != 0)
 112              {
 113                const size_t __len = __builtin_strlen(__s) + 1;
 114                char* __tmp = new char[__len];
 115                __builtin_memcpy(__tmp, __s, __len);
 116                this->_M_name_messages = __tmp;
 117              }
 118            else
 119              this->_M_name_messages = locale::facet::_S_get_c_name();
 120          }
 121
 122        if (__builtin_strcmp(__s, "C") != 0
 123            && __builtin_strcmp(__s, "POSIX") != 0)
 124          {
 125            this->_S_destroy_c_locale(this->_M_c_locale_messages);
 126            this->_S_create_c_locale(this->_M_c_locale_messages, __s);
 127          }
 128      }
 129
 130 _GLIBCXX_END_NAMESPACE_VERSION
 131 } // namespace