libstdc++
messages_members.h
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1 // std::messages implementation details, GNU version -*- C++ -*-
2 
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009
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 messages_members.h
27  * This is an internal header file, included by other library headers.
28  * You should not attempt to use it directly.
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 _GLIBCXX_BEGIN_NAMESPACE(std)
40 
41  // Non-virtual member functions.
42  template<typename _CharT>
43  messages<_CharT>::messages(size_t __refs)
44  : facet(__refs), _M_c_locale_messages(_S_get_c_locale()),
45  _M_name_messages(_S_get_c_name())
46  { }
47 
48  template<typename _CharT>
49  messages<_CharT>::messages(__c_locale __cloc, const char* __s,
50  size_t __refs)
51  : facet(__refs), _M_c_locale_messages(NULL), _M_name_messages(NULL)
52  {
53  if (__builtin_strcmp(__s, _S_get_c_name()) != 0)
54  {
55  const size_t __len = __builtin_strlen(__s) + 1;
56  char* __tmp = new char[__len];
57  __builtin_memcpy(__tmp, __s, __len);
58  _M_name_messages = __tmp;
59  }
60  else
61  _M_name_messages = _S_get_c_name();
62 
63  // Last to avoid leaking memory if new throws.
64  _M_c_locale_messages = _S_clone_c_locale(__cloc);
65  }
66 
67  template<typename _CharT>
68  typename messages<_CharT>::catalog
69  messages<_CharT>::open(const basic_string<char>& __s, const locale& __loc,
70  const char* __dir) const
71  {
72  bindtextdomain(__s.c_str(), __dir);
73  return this->do_open(__s, __loc);
74  }
75 
76  // Virtual member functions.
77  template<typename _CharT>
79  {
80  if (_M_name_messages != _S_get_c_name())
81  delete [] _M_name_messages;
82  _S_destroy_c_locale(_M_c_locale_messages);
83  }
84 
85  template<typename _CharT>
86  typename messages<_CharT>::catalog
88  const locale&) const
89  {
90  // No error checking is done, assume the catalog exists and can
91  // be used.
92  textdomain(__s.c_str());
93  return 0;
94  }
95 
96  template<typename _CharT>
97  void
98  messages<_CharT>::do_close(catalog) const
99  { }
100 
101  // messages_byname
102  template<typename _CharT>
103  messages_byname<_CharT>::messages_byname(const char* __s, size_t __refs)
104  : messages<_CharT>(__refs)
105  {
106  if (this->_M_name_messages != locale::facet::_S_get_c_name())
107  {
108  delete [] this->_M_name_messages;
109  if (__builtin_strcmp(__s, locale::facet::_S_get_c_name()) != 0)
110  {
111  const size_t __len = __builtin_strlen(__s) + 1;
112  char* __tmp = new char[__len];
113  __builtin_memcpy(__tmp, __s, __len);
114  this->_M_name_messages = __tmp;
115  }
116  else
117  this->_M_name_messages = locale::facet::_S_get_c_name();
118  }
119 
120  if (__builtin_strcmp(__s, "C") != 0
121  && __builtin_strcmp(__s, "POSIX") != 0)
122  {
123  this->_S_destroy_c_locale(this->_M_c_locale_messages);
124  this->_S_create_c_locale(this->_M_c_locale_messages, __s);
125  }
126  }
127 
128 _GLIBCXX_END_NAMESPACE