1 /*
2  * Copyright (c) 1999
3  * Silicon Graphics Computer Systems, Inc.
4  *
5  * Copyright (c) 1999
6  * Boris Fomitchev
7  *
8  * This material is provided "as is", with absolutely no warranty expressed
9  * or implied. Any use is at your own risk.
10  *
11  * Permission to use or copy this software for any purpose is hereby granted
12  * without fee, provided the above notices are retained on all copies.
13  * Permission to modify the code and to distribute modified code is granted,
14  * provided the above notices are retained, and a notice that the code was
15  * modified is included with the above copyright notice.
16  *
17  */
18 #include "stlport_prefix.h"
19 
20 #include <typeinfo>
21 
22 #include "message_facets.h"
23 #include "acquire_release.h"
24 
25 _STLP_BEGIN_NAMESPACE
26 
27 _STLP_MOVE_TO_PRIV_NAMESPACE
28 
29 void _Catalog_locale_map::insert(nl_catd_type key, const locale& L) {
30   _STLP_TRY {
31 #if !defined (_STLP_NO_TYPEINFO) && !defined (_STLP_NO_RTTI)
32     // Don't bother to do anything unless we're using a non-default ctype facet
33 #  ifdef _STLP_NO_WCHAR_T
34     typedef char _Char;
35 #  else
36     typedef wchar_t _Char;
37 #  endif
38 
39     typedef ctype<_Char> wctype;
40     wctype const& wct = use_facet<wctype>(L);
41     if (typeid(wct) != typeid(wctype)) {
42 #endif
43       if (!M)
44         M = new map_type;
45 
46       M->insert(map_type::value_type(key, L));
47 #if !defined (_STLP_NO_TYPEINFO) && !defined (_STLP_NO_RTTI)
48     }
49 #endif
50   }
51   _STLP_CATCH_ALL {}
52 }
53 
54 void _Catalog_locale_map::erase(nl_catd_type key) {
55   if (M)
56     M->erase(key);
57 }
58 
59 locale _Catalog_locale_map::lookup(nl_catd_type key) const {
60   if (M) {
61     map_type::const_iterator i = M->find(key);
62     return i != M->end() ? (*i).second : locale::classic();
63   }
64   else
65     return locale::classic();
66 }
67 
68 
69 #if defined (_STLP_USE_NL_CATD_MAPPING)
70 _STLP_VOLATILE __stl_atomic_t _Catalog_nl_catd_map::_count = 0;
71 
72 messages_base::catalog _Catalog_nl_catd_map::insert(nl_catd_type cat) {
73   messages_base::catalog &res = Mr[cat];
74   if ( res == 0 ) {
75 #if defined (_STLP_ATOMIC_INCREMENT)
76     res = __STATIC_CAST(int, _STLP_ATOMIC_INCREMENT(&_count));
77 #else
78     static _STLP_STATIC_MUTEX _Count_lock _STLP_MUTEX_INITIALIZER;
79     {
80       _STLP_auto_lock sentry(_Count_lock);
81       res = __STATIC_CAST(int, ++_count);
82     }
83 #endif
84     M[res] = cat;
85   }
86   return res;
87 }
88 
89 void _Catalog_nl_catd_map::erase(messages_base::catalog cat) {
90   map_type::iterator mit(M.find(cat));
91   if (mit != M.end()) {
92     Mr.erase((*mit).second);
93     M.erase(mit);
94   }
95 }
96 #endif
97 
98 //----------------------------------------------------------------------
99 //
100 _Messages::_Messages(bool is_wide, const char *name) :
101   _M_message_obj(0), _M_map(0) {
102   if (!name)
103     locale::_M_throw_on_null_name();
104 
105   int __err_code;
106   char buf[_Locale_MAX_SIMPLE_NAME];
107   _M_message_obj = _STLP_PRIV __acquire_messages(name, buf, 0, &__err_code);
108   if (!_M_message_obj)
109     locale::_M_throw_on_creation_failure(__err_code, name, "messages");
110 
111   if (is_wide)
112     _M_map = new _Catalog_locale_map;
113 }
114 
115 _Messages::_Messages(bool is_wide, _Locale_messages* msg) :
116   _M_message_obj(msg), _M_map(is_wide ? new _Catalog_locale_map() : 0)
117 {}
118 
119 _Messages::~_Messages() {
120   __release_messages(_M_message_obj);
121   delete _M_map;
122 }
123 
124 _Messages::catalog _Messages::do_open(const string& filename, const locale& L) const {
125   nl_catd_type result = _M_message_obj ? _Locale_catopen(_M_message_obj, filename.c_str())
126     : (nl_catd_type)(-1);
127 
128   if ( result != (nl_catd_type)(-1) ) {
129     if ( _M_map != 0 ) {
130       _M_map->insert(result, L);
131     }
132     return _STLP_MUTABLE(_Messages_impl, _M_cat).insert( result );
133   }
134 
135   return -1;
136 }
137 
138 string _Messages::do_get(catalog cat,
139                          int set, int p_id, const string& dfault) const {
140   return _M_message_obj != 0 && cat >= 0
141     ? string(_Locale_catgets(_M_message_obj, _STLP_MUTABLE(_Messages_impl, _M_cat)[cat],
142                              set, p_id, dfault.c_str()))
143     : dfault;
144 }
145 
146 #if !defined (_STLP_NO_WCHAR_T)
147 
148 wstring
149 _Messages::do_get(catalog thecat,
150                   int set, int p_id, const wstring& dfault) const {
151   typedef ctype<wchar_t> wctype;
152   const wctype& ct = use_facet<wctype>(_M_map->lookup(_STLP_MUTABLE(_Messages_impl, _M_cat)[thecat]));
153 
154   const char* str = _Locale_catgets(_M_message_obj, _STLP_MUTABLE(_Messages_impl, _M_cat)[thecat], set, p_id, "");
155 
156   // Verify that the lookup failed; an empty string might represent success.
157   if (!str)
158     return dfault;
159   else if (str[0] == '\0') {
160     const char* str2 = _Locale_catgets(_M_message_obj, _STLP_MUTABLE(_Messages_impl, _M_cat)[thecat], set, p_id, "*");
161     if (!str2 || ((str2[0] == '*') && (str2[1] == '\0')))
162       return dfault;
163   }
164 
165   // str is correct.  Now we must widen it to get a wstring.
166   size_t n = strlen(str);
167 
168   // NOT PORTABLE.  What we're doing relies on internal details of the
169   // string implementation.  (Contiguity of string elements.)
170   wstring result(n, wchar_t(0));
171   ct.widen(str, str + n, &*result.begin());
172   return result;
173 }
174 
175 #endif
176 
177 void _Messages::do_close(catalog thecat) const {
178   if (_M_message_obj)
179     _Locale_catclose(_M_message_obj, _STLP_MUTABLE(_Messages_impl, _M_cat)[thecat]);
180   if (_M_map) _M_map->erase(_STLP_MUTABLE(_Messages_impl, _M_cat)[thecat]);
181   _STLP_MUTABLE(_Messages_impl, _M_cat).erase( thecat );
182 }
183 
184 _STLP_MOVE_TO_STD_NAMESPACE
185 
186 //----------------------------------------------------------------------
187 // messages<char>
188 messages<char>::messages(size_t refs)
189   : locale::facet(refs) {}
190 
191 messages_byname<char>::messages_byname(const char *name, size_t refs)
192   : messages<char>(refs), _M_impl(new _STLP_PRIV _Messages(false, name)) {}
193 
194 messages_byname<char>::messages_byname(_Locale_messages* msg)
195   : messages<char>(0), _M_impl(new _STLP_PRIV _Messages(false, msg)) {}
196 
197 messages_byname<char>::~messages_byname()
198 { delete _M_impl; }
199 
200 messages_byname<char>::catalog
201 messages_byname<char>::do_open(const string& filename, const locale& l) const
202 { return _M_impl->do_open(filename, l); }
203 
204 string
205 messages_byname<char>::do_get(catalog cat, int set, int p_id,
206                               const string& dfault) const
207 { return _M_impl->do_get(cat, set, p_id, dfault); }
208 
209 void messages_byname<char>::do_close(catalog cat) const
210 { _M_impl->do_close(cat); }
211 
212 #if !defined (_STLP_NO_WCHAR_T)
213 
214 //----------------------------------------------------------------------
215 // messages<wchar_t>
216 
217 messages<wchar_t>::messages(size_t refs)
218   : locale::facet(refs) {}
219 
220 messages_byname<wchar_t>::messages_byname(const char *name, size_t refs)
221   : messages<wchar_t>(refs), _M_impl(new _STLP_PRIV _Messages(true, name)) {}
222 
223 messages_byname<wchar_t>::messages_byname(_Locale_messages* msg)
224   : messages<wchar_t>(0), _M_impl(new _STLP_PRIV _Messages(true, msg)) {}
225 
226 messages_byname<wchar_t>::~messages_byname()
227 { delete _M_impl; }
228 
229 messages_byname<wchar_t>::catalog
230 messages_byname<wchar_t>::do_open(const string& filename, const locale& L) const
231 { return _M_impl->do_open(filename, L); }
232 
233 wstring
234 messages_byname<wchar_t>::do_get(catalog thecat,
235                                  int set, int p_id, const wstring& dfault) const
236 { return _M_impl->do_get(thecat, set, p_id, dfault); }
237 
238 void messages_byname<wchar_t>::do_close(catalog cat) const
239 { _M_impl->do_close(cat); }
240 
241 #endif
242 
243 _STLP_END_NAMESPACE
244 
245 // Local Variables:
246 // mode:C++
247 // End:
248