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 /*

  * Copyright (c) 1999

  * Silicon Graphics Computer Systems, Inc.

  *

  * Copyright (c) 1999

  * Boris Fomitchev

  *

  * This material is provided "as is", with absolutely no warranty expressed

  * or implied. Any use is at your own risk.

  *

  * Permission to use or copy this software for any purpose is hereby granted

  * without fee, provided the above notices are retained on all copies.

  * Permission to modify the code and to distribute modified code is granted,

  * provided the above notices are retained, and a notice that the code was

  * modified is included with the above copyright notice.

  *

  */

 #include "stlport_prefix.h"

 #include <hash_map>

 #include <string>

 #include <locale>

 #include <istream>

 #include "c_locale.h"

 #include "locale_impl.h"

 #include "acquire_release.h"

 _STLP_BEGIN_NAMESPACE

 _STLP_MOVE_TO_PRIV_NAMESPACE

 // Those wrappers are needed to use locale functions in __acquire_category,

 // all functions have to present the same prototype.

 static void* _Loc_ctype_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_ctype_create(s, hint, __err_code); }

 static void* _Loc_codecvt_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_codecvt_create(s, hint, __err_code); }

 static void* _Loc_numeric_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_numeric_create(s, hint, __err_code); }

 static void* _Loc_time_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_time_create(s, hint, __err_code); }

 static void* _Loc_collate_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_collate_create(s, hint, __err_code); }

 static void* _Loc_monetary_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_monetary_create(s, hint, __err_code); }

 static void* _Loc_messages_create(const char * s, _Locale_name_hint* hint, int *__err_code)

 { return _Locale_messages_create(s, hint, __err_code); }

 static char const* _Loc_ctype_name(void* l, char* s)

 { return _Locale_ctype_name((_Locale_ctype*)l, s); }

 static char const* _Loc_codecvt_name(void* l, char* s)

 { return _Locale_codecvt_name((_Locale_codecvt*)l, s); }

 static char const* _Loc_numeric_name(void* l, char* s)

 { return _Locale_numeric_name((_Locale_numeric*)l, s); }

 static char const* _Loc_time_name(void* l, char* s)

 { return _Locale_time_name((_Locale_time*)l, s); }

 static char const* _Loc_collate_name(void* l, char* s)

 { return _Locale_collate_name((_Locale_collate*)l, s); }

 static char const* _Loc_monetary_name(void* l, char* s)

 { return _Locale_monetary_name((_Locale_monetary*)l, s); }

 static char const* _Loc_messages_name(void* l, char* s)

 { return _Locale_messages_name((_Locale_messages*)l, s); }

 static const char* _Loc_ctype_default(char* p)

 { return _Locale_ctype_default(p); }

 static const char* _Loc_numeric_default(char * p)

 { return _Locale_numeric_default(p); }

 static const char* _Loc_time_default(char* p)

 { return _Locale_time_default(p); }

 static const char* _Loc_collate_default(char* p)

 { return _Locale_collate_default(p); }

 static const char* _Loc_monetary_default(char* p)

 { return _Locale_monetary_default(p); }

 static const char* _Loc_messages_default(char* p)

 { return _Locale_messages_default(p); }

 static void _Loc_ctype_destroy(void* p)    {_Locale_ctype_destroy((_Locale_ctype*)p); }

 static void _Loc_codecvt_destroy(void* p)    {_Locale_codecvt_destroy((_Locale_codecvt*)p); }

 static void _Loc_numeric_destroy(void* p)  {_Locale_numeric_destroy((_Locale_numeric*)p); }

 static void _Loc_time_destroy(void* p)     {_Locale_time_destroy((_Locale_time*)p);}

 static void _Loc_collate_destroy(void* p)  {_Locale_collate_destroy((_Locale_collate*)p);}

 static void _Loc_monetary_destroy(void* p) {_Locale_monetary_destroy((_Locale_monetary*)p);}

 static void _Loc_messages_destroy(void* p) {_Locale_messages_destroy((_Locale_messages*)p);}

 typedef void* (*loc_create_func_t)(const char *, _Locale_name_hint*, int *__err_code);

 typedef char const* (*loc_name_func_t)(void* l, char* s);

 typedef void (*loc_destroy_func_t)(void* l);

 typedef const char* (*loc_default_name_func_t)(char* s);

 typedef char const* (*loc_extract_name_func_t)(const char*, char*, _Locale_name_hint*, int *__err_code);

 //----------------------------------------------------------------------

 // Acquire and release low-level category objects.  The whole point of

 // this is so that we don't allocate (say) four different _Locale_ctype

 // objects for a single locale.

 // Global hash tables for category objects.

 typedef hash_map<string, pair<void*, size_t>, hash<string>, equal_to<string> > Category_Map;

 // Look up a category by name

 static Category_Map** ctype_hash() {

   static Category_Map *_S_ctype_hash = 0;

   return &_S_ctype_hash;

 }

 static Category_Map** codecvt_hash() {

   static Category_Map *_S_codecvt_hash = 0;

   return &_S_codecvt_hash;

 }

 static Category_Map** numeric_hash() {

   static Category_Map *_S_numeric_hash = 0;

   return &_S_numeric_hash;

 }

 static Category_Map** time_hash() {

   static Category_Map *_S_time_hash = 0;

   return &_S_time_hash;

 }

 static Category_Map** collate_hash() {

   static Category_Map *_S_collate_hash = 0;

   return &_S_collate_hash;

 }

 static Category_Map** monetary_hash() {

   static Category_Map *_S_monetary_hash = 0;

   return &_S_monetary_hash;

 }

 static Category_Map** messages_hash() {

   static Category_Map *_S_messages_hash;

   return &_S_messages_hash;

 }

 // We have a single lock for all of the hash tables.  We may wish to

 // replace it with six different locks.

 /* REFERENCED */

 static _STLP_STATIC_MUTEX& category_hash_mutex() {

   static _STLP_STATIC_MUTEX lock _STLP_MUTEX_INITIALIZER;

   return lock;

 }

 static void*

 __acquire_category(const char* &name, char *buf, _Locale_name_hint* hint,

                    loc_extract_name_func_t extract_name,

                    loc_create_func_t create_obj, loc_default_name_func_t default_name,

                    Category_Map ** M, int *__err_code) {

 #if !defined (__BORLANDC__) || (__BORLANDC__ >= 0x564)

   typedef Category_Map::iterator Category_iterator;

   pair<Category_iterator, bool> result;

 #else

 #  if !defined(_STLP_DEBUG)

   pair<_Ht_iterator<_Slist_iterator<pair<const string,pair<void *,unsigned int> >,_Nonconst_traits<pair<const string,pair<void *,unsigned int> > > >,_NonLocalHashMapTraitsT<pair<const string,pair<void *,unsigned int> > > >, bool> result;

 #  else

   pair<_DBG_iter<_NonDbg_hashtable<pair<const string,pair<void *,unsigned int> >,string,hash<string>,_HashMapTraitsT<pair<const string,pair<void *,unsigned int> > >,_Select1st<pair<const string,pair<void *,unsigned int> > >,_DbgEqual<string,equal_to<string> >,allocator<pair<const string,pair<void *,unsigned int> > > >,_DbgTraits<_NonLocalHashMapTraitsT<pair<const string,pair<void *,unsigned int> > > > >, bool> result;

 #  endif

 #endif

   *__err_code = _STLP_LOC_UNDEFINED;

   // Find what name to look for. Be careful if user requests the default.

   if (name[0] == 0) {

     name = default_name(buf);

     if (name == 0 || name[0] == 0)

       name = "C";

   }

   else {

     const char* cname = extract_name(name, buf, hint, __err_code);

     if (cname == 0) {

       return 0;

     }

     name = cname;

   }

   Category_Map::value_type __e(name, pair<void*,size_t>((void*)0,size_t(0)));

   _STLP_auto_lock sentry(category_hash_mutex());

   if (!*M)

     *M = new Category_Map();

   // Look for an existing entry with that name.

   result = (*M)->insert_noresize(__e);

   if (result.second) {

     // There was no entry in the map already.  Create the category.

     (*result.first).second.first = create_obj(name, hint, __err_code);

     if (!(*result.first).second.first) {

       (*M)->erase(result.first);

 #if defined (_STLP_LEAKS_PEDANTIC)

       if ((*M)->empty()) {

         delete *M;

         *M = 0;

       }

 #endif

       return 0;

     }

   }

   // Increment the reference count.

   ++((*result.first).second.second);

   return (*result.first).second.first;

 }

 static void

 __release_category(void* cat,

                    loc_destroy_func_t destroy_fun,

                    loc_name_func_t get_name,

                    Category_Map** M) {

   Category_Map *pM = *M;

   if (cat && pM) {

     // Find the name of the category object.

     char buf[_Locale_MAX_SIMPLE_NAME + 1];

     char const* name = get_name(cat, buf);

     if (name != 0) {

       _STLP_auto_lock sentry(category_hash_mutex());

       Category_Map::iterator it = pM->find(name);

       if (it != pM->end()) {

         // Decrement the ref count.  If it goes to zero, delete this category

         // from the map.

         if (--((*it).second.second) == 0) {

           void* cat1 = (*it).second.first;

           destroy_fun(cat1);

           pM->erase(it);

 #if defined (_STLP_LEAKS_PEDANTIC)

           if (pM->empty()) {

             delete pM;

             *M = 0;

           }

 #endif

         }

       }

     }

   }

 }

 _Locale_ctype* _STLP_CALL __acquire_ctype(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_ctype*, __acquire_category(name, buf, hint,

                                                                _Locale_extract_ctype_name, _Loc_ctype_create, _Loc_ctype_default,

                                                                ctype_hash(), __err_code));

 }

 _Locale_codecvt* _STLP_CALL __acquire_codecvt(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_codecvt*, __acquire_category(name, buf, hint,

                                                                  _Locale_extract_ctype_name, _Loc_codecvt_create, _Loc_ctype_default,

                                                                  codecvt_hash(), __err_code));

 }

 _Locale_numeric* _STLP_CALL __acquire_numeric(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_numeric*, __acquire_category(name, buf, hint,

                                                                  _Locale_extract_numeric_name, _Loc_numeric_create, _Loc_numeric_default,

                                                                  numeric_hash(), __err_code));

 }

 _Locale_time* _STLP_CALL __acquire_time(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_time*, __acquire_category(name, buf, hint,

                                                               _Locale_extract_time_name, _Loc_time_create, _Loc_time_default,

                                                               time_hash(), __err_code));

 }

 _Locale_collate* _STLP_CALL __acquire_collate(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_collate*, __acquire_category(name, buf, hint,

                                                                  _Locale_extract_collate_name, _Loc_collate_create, _Loc_collate_default,

                                                                  collate_hash(), __err_code));

 }

 _Locale_monetary* _STLP_CALL __acquire_monetary(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_monetary*, __acquire_category(name, buf, hint,

                                                                   _Locale_extract_monetary_name, _Loc_monetary_create, _Loc_monetary_default,

                                                                   monetary_hash(), __err_code));

 }

 _Locale_messages* _STLP_CALL __acquire_messages(const char* &name, char *buf, _Locale_name_hint* hint, int *__err_code) {

   return __REINTERPRET_CAST(_Locale_messages*, __acquire_category(name, buf, hint,

                                                                   _Locale_extract_messages_name, _Loc_messages_create, _Loc_messages_default,

                                                                   messages_hash(), __err_code));

 }

 void _STLP_CALL __release_ctype(_Locale_ctype* cat)

 { __release_category(cat, _Loc_ctype_destroy, _Loc_ctype_name, ctype_hash()); }

 void _STLP_CALL __release_codecvt(_Locale_codecvt* cat)

 { __release_category(cat, _Loc_codecvt_destroy, _Loc_codecvt_name, codecvt_hash()); }

 void _STLP_CALL __release_numeric(_Locale_numeric* cat)

 { __release_category(cat, _Loc_numeric_destroy, _Loc_numeric_name, numeric_hash()); }

 void _STLP_CALL __release_time(_Locale_time* cat)

 { __release_category(cat, _Loc_time_destroy, _Loc_time_name, time_hash()); }

 void _STLP_CALL __release_collate(_Locale_collate* cat)

 { __release_category(cat, _Loc_collate_destroy, _Loc_collate_name, collate_hash()); }

 void _STLP_CALL __release_monetary(_Locale_monetary* cat)

 { __release_category(cat, _Loc_monetary_destroy, _Loc_monetary_name, monetary_hash()); }

 void _STLP_CALL __release_messages(_Locale_messages* cat)

 { __release_category(cat, _Loc_messages_destroy, _Loc_messages_name, messages_hash()); }

 _STLP_MOVE_TO_STD_NAMESPACE

 _STLP_END_NAMESPACE