Add function "hashtable_has_key" in WeeChat and plugin API

doc/en/weechat_plugin_api.en.txt

@@ -2980,6 +2980,43 @@ void *value = weechat_hashtable_get (hashtable, "my_key");
 [NOTE]
 This function is not available in scripting API.
 
+weechat_hashtable_has_key
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+_New in version 0.3.4._
+
+Return 1 if hashtable has key, otherwise 0.
+
+Prototype:
+
+[source,C]
+----------------------------------------
+int weechat_hashtable_has_key (struct t_hashtable *hashtable, void *key);
+----------------------------------------
+
+Arguments:
+
+* 'hashtable': hashtable pointer
+* 'key': key pointer
+
+Return value:
+
+* 1 if key is in hashtable, 0 if key is not in hashtable
+
+C example:
+
+[source,C]
+----------------------------------------
+if (weechat_hashtable_has_key (hashtable, "my_key"))
+{
+    /* key is in hashtable */
+    /* ... */
+}
+----------------------------------------
+
+[NOTE]
+This function is not available in scripting API.
+
 weechat_hashtable_map
 ^^^^^^^^^^^^^^^^^^^^^
 

doc/fr/weechat_plugin_api.fr.txt

@@ -3011,6 +3011,43 @@ void *value = weechat_hashtable_get (hashtable, "ma_cle");
 [NOTE]
 Cette fonction n'est pas disponible dans l'API script.
 
+weechat_hashtable_has_key
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+_Nouveau dans la version 0.3.4._
+
+Retourne 1 si la clé est dans la hashtable, sinon 0.
+
+Prototype :
+
+[source,C]
+----------------------------------------
+int weechat_hashtable_has_key (struct t_hashtable *hashtable, void *key);
+----------------------------------------
+
+Paramètres :
+
+* 'hashtable' : pointeur vers la hashtable
+* 'key' : pointeur vers la clé
+
+Valeur en retour :
+
+* 1 si la clé est dans la hashtable, 0 si la clé n'est pas dans la hashtable
+
+Exemple en C :
+
+[source,C]
+----------------------------------------
+if (weechat_hashtable_has_key (hashtable, "ma_cle"))
+{
+    /* la clé est dans la hashtable */
+    /* ... */
+}
+----------------------------------------
+
+[NOTE]
+Cette fonction n'est pas disponible dans l'API script.
+
 weechat_hashtable_map
 ^^^^^^^^^^^^^^^^^^^^^
 

doc/it/weechat_plugin_api.it.txt

@@ -3013,6 +3013,46 @@ void *value = weechat_hashtable_get (hashtable, "my_key");
 [NOTE]
 Questa funzione non è disponibile nelle API per lo scripting.
 
+weechat_hashtable_has_key
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+_Novità nella versione 0.3.4._
+
+// TRANSLATION MISSING
+Return 1 if hashtable has key, otherwise 0.
+
+Prototipo:
+
+[source,C]
+----------------------------------------
+int weechat_hashtable_has_key (struct t_hashtable *hashtable, void *key);
+----------------------------------------
+
+Argomenti:
+
+* 'hashtable': puntatore alla tabella hash
+* 'key': puntatore alla chiave
+
+Valore restituito:
+
+// TRANSLATION MISSING
+* 1 if key is in hashtable, 0 if key is not in hashtable
+
+Esempio in C:
+
+// TRANSLATION MISSING
+[source,C]
+----------------------------------------
+if (weechat_hashtable_has_key (hashtable, "my_key"))
+{
+    /* key is in hashtable */
+    /* ... */
+}
+----------------------------------------
+
+[NOTE]
+This function is not available in scripting API.
+
 weechat_hashtable_map
 ^^^^^^^^^^^^^^^^^^^^^
 

src/core/wee-hashtable.c

@@ -374,6 +374,16 @@ hashtable_get (struct t_hashtable *hashtable, const void *key)
     return (ptr_item) ? ptr_item->value : NULL;
 }
 
+/*
+ * hashtable_has_key: return 1 if key is in hashtable, otherwise 0
+ */
+
+int
+hashtable_has_key (struct t_hashtable *hashtable, const void *key)
+{
+    return (hashtable_get_item (hashtable, key, NULL) != NULL) ? 1 : 0;
+}
+
 /*
  * hashtable_map: call a function on all hashtable entries
  */

src/core/wee-hashtable.h

@@ -113,6 +113,7 @@ extern int hashtable_set_with_size (struct t_hashtable *hashtable,
 extern int hashtable_set (struct t_hashtable *hashtable, void *key,
                           void *value);
 extern void *hashtable_get (struct t_hashtable *hashtable, const void *key);
+extern int hashtable_has_key (struct t_hashtable *hashtable, const void *key);
 extern void hashtable_map (struct t_hashtable *hashtable,
                            t_hashtable_map *callback_map,
                            void *callback_map_data);

src/plugins/plugin.c

@@ -525,6 +525,7 @@ plugin_load (const char *filename)
         new_plugin->hashtable_set_with_size = &hashtable_set_with_size;
         new_plugin->hashtable_set = &hashtable_set;
         new_plugin->hashtable_get = &hashtable_get;
+        new_plugin->hashtable_has_key = &hashtable_has_key;
         new_plugin->hashtable_map = &hashtable_map;
         new_plugin->hashtable_get_integer = &hashtable_get_integer;
         new_plugin->hashtable_get_string = &hashtable_get_string;

src/plugins/weechat-plugin.h

@@ -45,7 +45,7 @@ struct timeval;
  */
 
 /* API version (used to check that plugin has same API and can be loaded) */
-#define WEECHAT_PLUGIN_API_VERSION "20100827-01"
+#define WEECHAT_PLUGIN_API_VERSION "20101011-01"
 
 /* macros for defining plugin infos */
 #define WEECHAT_PLUGIN_NAME(__name)                                     \
@@ -265,6 +265,7 @@ struct t_weechat_plugin
     int (*hashtable_set) (struct t_hashtable *hashtable, void *key,
                           void *value);
     void *(*hashtable_get) (struct t_hashtable *hashtable, const void *key);
+    int (*hashtable_has_key) (struct t_hashtable *hashtable, const void *key);
     void (*hashtable_map) (struct t_hashtable *hashtable,
                            void (*callback_map) (void *data,
                                                  struct t_hashtable *hashtable,
@@ -896,6 +897,8 @@ extern int weechat_plugin_end (struct t_weechat_plugin *plugin);
     weechat_plugin->hashtable_set(__hashtable, __key, __value)
 #define weechat_hashtable_get(__hashtable, __key)                       \
     weechat_plugin->hashtable_get(__hashtable, __key)
+#define weechat_hashtable_has_key(__hashtable, __key)                   \
+    weechat_plugin->hashtable_has_key(__hashtable, __key)
 #define weechat_hashtable_map(__hashtable, __cb_map, __cb_map_data)     \
     weechat_plugin->hashtable_map(__hashtable, __cb_map, __cb_map_data)
 #define weechat_hashtable_get_integer(__hashtable, __property)          \