api: add new function hdata_check_pointer

19 files changed, 503 insertions, 82 deletions

diff --git a/ChangeLog b/ChangeLog
index 7e938a83f..41c246f6f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,7 @@
 WeeChat ChangeLog
 =================
 Sébastien Helleu <flashcode@flashtux.org>
-v0.3.7-dev, 2011-12-16
+v0.3.7-dev, 2011-12-17
 
 
 Version 0.3.7 (under dev!)
@@ -35,8 +35,8 @@ Version 0.3.7 (under dev!)
 * core: fix compilation error with "pid_t" on Mac OS X (bug #34639)
 * core: enable background process under Cygwin to connect to servers, fix
   reconnection problem (bug #34626)
-* api: add new functions strcasecmp_range, strncasecmp_range, hdata_char and
-  nicklist_get_next_item
+* api: add new functions strcasecmp_range, strncasecmp_range,
+  hdata_check_pointer, hdata_char and nicklist_get_next_item
 * irc: reset read marker of current buffer on manual /join
 * irc: fix crash when signon time in message 317 (whois, idle) is invalid
   (too large) (bug #34905)
diff --git a/doc/de/weechat_scripting.de.txt b/doc/de/weechat_scripting.de.txt
index ee1e4d579..fafd8dc76 100644
--- a/doc/de/weechat_scripting.de.txt
+++ b/doc/de/weechat_scripting.de.txt
@@ -356,8 +356,9 @@ Liste der Skript API Funktionen:
   infolist_time, infolist_free
 | hdata               |
   hdata_get, hdata_get_var_offset, hdata_get_var_type_string,
-  hdata_get_var_hdata, hdata_get_list, hdata_move, hdata_integer, hdata_long,
-  hdata_string, hdata_pointer, hdata_time, hdata_get_string
+  hdata_get_var_hdata, hdata_get_list, hdata_check_pointer, hdata_move,
+  hdata_char, hdata_integer, hdata_long, hdata_string, hdata_pointer,
+  hdata_time, hdata_get_string
 | Upgrade             |
   upgrade_new, upgrade_write_object, upgrade_read, upgrade_close
 |========================================
diff --git a/doc/en/weechat_plugin_api.en.txt b/doc/en/weechat_plugin_api.en.txt
index fd7a427a9..c8fe73d5e 100644
--- a/doc/en/weechat_plugin_api.en.txt
+++ b/doc/en/weechat_plugin_api.en.txt
@@ -12324,8 +12324,16 @@ C example:
 int offset = weechat_hdata_get_var_offset (hdata, "name");
 ----------------------------------------
 
-[NOTE]
-This function is not available in scripting API.
+Script (Python):
+
+[source,python]
+----------------------------------------
+# prototype
+offset = weechat.hdata_get_var_offset(hdata, name)
+
+# example
+offset = weechat.hdata_get(hdata, "name")
+----------------------------------------
 
 weechat_hdata_get_var_type
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -12585,6 +12593,65 @@ hdata = weechat.hdata_get("buffer")
 buffers = weechat.hdata_get_list(hdata, "gui_buffers")
 ----------------------------------------
 
+weechat_hdata_check_pointer
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+_New in version 0.3.7._
+
+Check if a pointer is valid for a hdata and a list pointer.
+
+Prototype:
+
+[source,C]
+----------------------------------------
+int weechat_hdata_check_pointer (struct t_hdata *hdata, void *list, void *pointer);
+----------------------------------------
+
+Arguments:
+
+* 'hdata': hdata pointer
+* 'list': list pointer
+* 'pointer': pointer to check
+
+Return value:
+
+* 1 if pointer is in list, 0 if not found
+
+C example:
+
+[source,C]
+----------------------------------------
+/* check if a buffer pointer is valid */
+struct t_hdata *hdata = weechat_hdata_get ("buffer");
+if (weechat_hdata_check_pointer (hdata,
+                                 weechat_hdata_get_list (hdata, "gui_buffers"),
+                                 ptr_buffer))
+{
+    /* valid pointer */
+}
+else
+{
+    /* invalid pointer */
+}
+----------------------------------------
+
+Script (Python):
+
+[source,python]
+----------------------------------------
+# prototype
+rc = weechat.hdata_check_pointer(hdata, list, pointer)
+
+# example
+hdata = weechat.hdata_get("buffer")
+if weechat.hdata_check_pointer(hdata, weechat.hdata_get_list(hdata, "gui_buffers"), ptr_buffer):
+    # valid pointer
+    # ...
+else:
+    # invalid pointer
+    # ...
+----------------------------------------
+
 weechat_hdata_move
 ^^^^^^^^^^^^^^^^^^
 
diff --git a/doc/en/weechat_scripting.en.txt b/doc/en/weechat_scripting.en.txt
index 3afbdf0df..bbc6d4c68 100644
--- a/doc/en/weechat_scripting.en.txt
+++ b/doc/en/weechat_scripting.en.txt
@@ -347,8 +347,9 @@ List of functions in script API:
   infolist_time, infolist_free
 | hdata               |
   hdata_get, hdata_get_var_offset, hdata_get_var_type_string,
-  hdata_get_var_hdata, hdata_get_list, hdata_move, hdata_integer, hdata_long,
-  hdata_string, hdata_pointer, hdata_time, hdata_get_string
+  hdata_get_var_hdata, hdata_get_list, hdata_check_pointer, hdata_move,
+  hdata_char, hdata_integer, hdata_long, hdata_string, hdata_pointer,
+  hdata_time, hdata_get_string
 | upgrade             |
   upgrade_new, upgrade_write_object, upgrade_read, upgrade_close
 |========================================
diff --git a/doc/fr/weechat_plugin_api.fr.txt b/doc/fr/weechat_plugin_api.fr.txt
index dc315aef4..516898580 100644
--- a/doc/fr/weechat_plugin_api.fr.txt
+++ b/doc/fr/weechat_plugin_api.fr.txt
@@ -1141,10 +1141,10 @@ Paramètres :
 * 'separators' : délimiteurs utilisés pour le découpage
 * 'keep_eol' : si différent de 0, alors chaque paramètre contiendra toutes les
   chaînes jusqu'à la fin de la ligne (voir exemple ci-dessous)
-** 0: chaque chaîne contiendra un mot
-** 1: chaque chaîne contiendra toute la chaîne jusqu'à la fin de la ligne (voir
+** 0 : chaque chaîne contiendra un mot
+** 1 : chaque chaîne contiendra toute la chaîne jusqu'à la fin de la ligne (voir
    exemple ci-dessous)
-** 2: comme 1, mais ne supprime pas les séparateurs en fin de chaîne avant le
+** 2 : comme 1, mais ne supprime pas les séparateurs en fin de chaîne avant le
    découpage (_nouveau dans la version 0.3.6_)
 * 'num_items_max' : nombre maximum de chaînes à créer (0 = pas de limite)
 * 'num_items' : pointeur vers un entier qui contiendra le nombre de chaînes
@@ -6776,7 +6776,7 @@ toujours).
 
 [NOTE]
 La taille du tampon pour l'envoi des données au "callback" est de 64 Ko (il y a
-2 tampons: un pour stdout et un pour stderr).
+2 tampons : un pour stdout et un pour stderr).
 Si la sortie du processus fils (stdout ou stderr) est plus longue que 64 Ko, le
 "callback" sera appelé plusieurs fois.
 
@@ -8072,7 +8072,7 @@ my_completion_cb (void *data, const char *completion_item,
 }
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -8572,7 +8572,7 @@ weechat_hook_hdata
 
 Accroche un hdata : le "callback" retournera un pointeur vers le hdata demandé.
 
-Prototype:
+Prototype :
 
 [source,C]
 ----------------------------------------
@@ -8712,7 +8712,7 @@ relâché). +
 ^(4)^ Il s'agit de la date lorsque WeeChat ajoute la ligne dans le tampon
 (supérieure ou égale à "_chat_line_date").
 
-Informations additionnelles pour l'objet de barre "buffer_nicklist":
+Informations additionnelles pour l'objet de barre "buffer_nicklist" :
 
 [width="70%",cols="3m,3,8",options="header"]
 |========================================
@@ -9219,7 +9219,7 @@ Paramètres :
 ** 'number' : numéro du tampon (commence à 1)
 ** 'layout_number' : numéro du tampon sauvegardé dans le "layout"
 ** 'layout_number_merge_order' : ordre du tampon mélangé pour le "layout"
-** 'short_name_is_set': 1 si le nom court est défini, 0 si non défini
+** 'short_name_is_set' : 1 si le nom court est défini, 0 si non défini
 ** 'type' : type de tampon (0 : formaté, 1 : contenu libre)
 ** 'notify' : niveau de notification du tampon
 ** 'num_displayed' : nombre de fenêtres affichant ce tampon
@@ -9760,7 +9760,7 @@ struct t_gui_window *weechat_window_search_with_buffer (struct t_gui_buffer *buf
 
 Paramètre :
 
-* 'buffer': buffer pointer
+* 'buffer' : pointeur vers le tampon
 
 Valeur de retour :
 
@@ -9776,7 +9776,7 @@ weechat_printf (NULL,
                 weechat_window_search_with_buffer (weechat_buffer_search_main ()));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12491,7 +12491,7 @@ Exemple en C :
 struct t_hdata *hdata = weechat_hdata_get ("irc_server");
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12532,8 +12532,16 @@ Exemple en C :
 int offset = weechat_hdata_get_var_offset (hdata, "name");
 ----------------------------------------
 
-[NOTE]
-Cette fonction n'est pas disponible dans l'API script.
+Script (Python) :
+
+[source,python]
+----------------------------------------
+# prototype
+offset = weechat.hdata_get_var_offset(hdata, name)
+
+# exemple
+offset = weechat.hdata_get(hdata, "name")
+----------------------------------------
 
 weechat_hdata_get_var_type
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -12625,7 +12633,7 @@ Exemple en C :
 weechat_printf (NULL, "type = %s", weechat_hdata_get_var_type_string (hdata, "name"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12666,7 +12674,7 @@ Exemple en C :
 weechat_printf (NULL, "hdata = %s", weechat_hdata_get_var_hdata (hdata, "name"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12782,7 +12790,7 @@ struct t_hdata *hdata = weechat_hdata_get ("buffer");
 struct t_gui_buffer *buffers = weechat_hdata_get_list (hdata, "gui_buffers");
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12794,6 +12802,65 @@ hdata = weechat.hdata_get("buffer")
 buffers = weechat.hdata_get_list(hdata, "gui_buffers")
 ----------------------------------------
 
+weechat_hdata_check_pointer
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+_Nouveau dans la version 0.3.7._
+
+Vérifie si un pointeur est valide pour un hdata et un pointeur de liste.
+
+Prototype :
+
+[source,C]
+----------------------------------------
+int weechat_hdata_check_pointer (struct t_hdata *hdata, void *list, void *pointer);
+----------------------------------------
+
+Paramètres :
+
+* 'hdata' : pointeur vers le hdata
+* 'list' : pointeur vers une liste
+* 'pointer' : pointeur à vérifier
+
+Valeur de retour :
+
+* 1 si le pointeur est dans la liste, 0 si non trouvé
+
+Exemple en C :
+
+[source,C]
+----------------------------------------
+/* vérifie si le pointeur vers le tampon est valide */
+struct t_hdata *hdata = weechat_hdata_get ("buffer");
+if (weechat_hdata_check_pointer (hdata,
+                                 weechat_hdata_get_list (hdata, "gui_buffers"),
+                                 ptr_buffer))
+{
+    /* pointeur valide */
+}
+else
+{
+    /* pointeur invalide */
+}
+----------------------------------------
+
+Script (Python) :
+
+[source,python]
+----------------------------------------
+# prototype
+rc = weechat.hdata_check_pointer(hdata, list, pointer)
+
+# exemple
+hdata = weechat.hdata_get("buffer")
+if weechat.hdata_check_pointer(hdata, weechat.hdata_get_list(hdata, "gui_buffers"), ptr_buffer):
+    # pointeur valide
+    # ...
+else:
+    # pointeur invalide
+    # ...
+----------------------------------------
+
 weechat_hdata_move
 ^^^^^^^^^^^^^^^^^^
 
@@ -12834,7 +12901,7 @@ if (buffer)
     buffer = weechat_hdata_move (hdata, buffer, -1);
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12885,7 +12952,7 @@ Exemple en C :
 weechat_printf (NULL, "letter = %c", weechat_hdata_char (hdata, pointer, "letter"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12930,7 +12997,7 @@ struct t_gui_buffer *buffer = weechat_buffer_search_main ();
 weechat_printf (NULL, "number = %d", weechat_hdata_integer (hdata, buffer, "number"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -12975,7 +13042,7 @@ Exemple en C :
 weechat_printf (NULL, "longvar = %ld", weechat_hdata_long (hdata, pointer, "longvar"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -13020,7 +13087,7 @@ struct t_gui_buffer *buffer = weechat_buffer_search_main ();
 weechat_printf (NULL, "name = %s", weechat_hdata_string (hdata, buffer, "name"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -13067,7 +13134,7 @@ struct t_gui_buffer *buffer = weechat_buffer_search_main ();
 weechat_printf (NULL, "lines = %lx", weechat_hdata_pointer (hdata, buffer, "lines"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -13130,7 +13197,7 @@ if (ptr)
 }
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
@@ -13199,7 +13266,7 @@ weechat_printf (NULL, "variables dans le hdata: %s" weechat_hdata_get_string (hd
 weechat_printf (NULL, "listes dans le hdata: %s" weechat_hdata_get_string (hdata, "list_keys"));
 ----------------------------------------
 
-Script (Python):
+Script (Python) :
 
 [source,python]
 ----------------------------------------
diff --git a/doc/fr/weechat_scripting.fr.txt b/doc/fr/weechat_scripting.fr.txt
index 32173cfd9..84d789602 100644
--- a/doc/fr/weechat_scripting.fr.txt
+++ b/doc/fr/weechat_scripting.fr.txt
@@ -356,8 +356,9 @@ Liste des fonctions de l'API script :
   infolist_time, infolist_free
 | hdata               |
   hdata_get, hdata_get_var_offset, hdata_get_var_type_string,
-  hdata_get_var_hdata, hdata_get_list, hdata_move, hdata_integer, hdata_long,
-  hdata_string, hdata_pointer, hdata_time, hdata_get_string
+  hdata_get_var_hdata, hdata_get_list, hdata_check_pointer, hdata_move,
+  hdata_char, hdata_integer, hdata_long, hdata_string, hdata_pointer,
+  hdata_time, hdata_get_string
 | mise à jour               |
   upgrade_new, upgrade_write_object, upgrade_read, upgrade_close
 |========================================
diff --git a/doc/it/weechat_plugin_api.it.txt b/doc/it/weechat_plugin_api.it.txt
index c397cde5c..6c8cf7b67 100644
--- a/doc/it/weechat_plugin_api.it.txt
+++ b/doc/it/weechat_plugin_api.it.txt
@@ -12441,8 +12441,16 @@ Esempio in C:
 int offset = weechat_hdata_get_var_offset (hdata, "name");
 ----------------------------------------
 
-[NOTE]
-Questa funzione non è disponibile nelle API per lo scripting.
+Script (Python):
+
+[source,python]
+----------------------------------------
+# prototipo
+offset = weechat.hdata_get_var_offset(hdata, name)
+
+# esempio
+offset = weechat.hdata_get(hdata, "name")
+----------------------------------------
 
 weechat_hdata_get_var_type
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -12703,6 +12711,69 @@ hdata = weechat.hdata_get("buffer")
 buffers = weechat.hdata_get_list(hdata, "gui_buffers")
 ----------------------------------------
 
+weechat_hdata_check_pointer
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+_Novità nella versione 0.3.7._
+
+// TRANSLATION MISSING
+Check if a pointer is valid for a hdata and a list pointer.
+
+Prototipo:
+
+[source,C]
+----------------------------------------
+int weechat_hdata_check_pointer (struct t_hdata *hdata, void *list, void *pointer);
+----------------------------------------
+
+Argomenti:
+
+* 'hdata': puntatore hdata
+// TRANSLATION MISSING
+* 'list': list pointer
+// TRANSLATION MISSING
+* 'pointer': pointer to check
+
+Valore restituito:
+
+// TRANSLATION MISSING
+* 1 if pointer is in list, 0 if not found
+
+Esempio in C:
+
+[source,C]
+----------------------------------------
+/* check if a buffer pointer is valid */
+struct t_hdata *hdata = weechat_hdata_get ("buffer");
+if (weechat_hdata_check_pointer (hdata,
+                                 weechat_hdata_get_list (hdata, "gui_buffers"),
+                                 ptr_buffer))
+{
+    /* valid pointer */
+}
+else
+{
+    /* invalid pointer */
+}
+----------------------------------------
+
+Script (Python):
+
+[source,python]
+----------------------------------------
+# prototipo
+rc = weechat.hdata_check_pointer(hdata, list, pointer)
+
+# esempio
+hdata = weechat.hdata_get("buffer")
+if weechat.hdata_check_pointer(hdata, weechat.hdata_get_list(hdata, "gui_buffers"), ptr_buffer):
+    # valid pointer
+    # ...
+else:
+    # invalid pointer
+    # ...
+----------------------------------------
+
 weechat_hdata_move
 ^^^^^^^^^^^^^^^^^^
 
diff --git a/doc/it/weechat_scripting.it.txt b/doc/it/weechat_scripting.it.txt
index 341b13f48..b6a9c3207 100644
--- a/doc/it/weechat_scripting.it.txt
+++ b/doc/it/weechat_scripting.it.txt
@@ -353,10 +353,11 @@ Elenco di funzioni nelle API per gli script:
   infolist_get, infolist_next, infolist_prev, infolist_reset_item_cursor, +
   infolist_fields, infolist_integer, infolist_string, infolist_pointer, +
   infolist_time, infolist_free
-| hdata               |
+| hdata                  |
   hdata_get, hdata_get_var_offset, hdata_get_var_type_string,
-  hdata_get_var_hdata, hdata_get_list, hdata_move, hdata_integer, hdata_long,
-  hdata_string, hdata_pointer, hdata_time, hdata_get_string
+  hdata_get_var_hdata, hdata_get_list, hdata_check_pointer, hdata_move,
+  hdata_char, hdata_integer, hdata_long, hdata_string, hdata_pointer,
+  hdata_time, hdata_get_string
 | aggiornamento          |
   upgrade_new, upgrade_write_object, upgrade_read, upgrade_close
 |========================================
diff --git a/doc/pl/weechat_scripting.pl.txt b/doc/pl/weechat_scripting.pl.txt
index 369494389..b4ff98ec8 100644
--- a/doc/pl/weechat_scripting.pl.txt
+++ b/doc/pl/weechat_scripting.pl.txt
@@ -347,8 +347,9 @@ Lista funkcji w API skryptów:
   infolist_time, infolist_free
 | hdata               |
   hdata_get, hdata_get_var_offset, hdata_get_var_type_string,
-  hdata_get_var_hdata, hdata_get_list, hdata_move, hdata_integer, hdata_long,
-  hdata_string, hdata_pointer, hdata_time, hdata_get_string
+  hdata_get_var_hdata, hdata_get_list, hdata_check_pointer, hdata_move,
+  hdata_char, hdata_integer, hdata_long, hdata_string, hdata_pointer,
+  hdata_time, hdata_get_string
 | uaktualnienie       |
   upgrade_new, upgrade_write_object, upgrade_read, upgrade_close
 |========================================
diff --git a/src/core/wee-hdata.c b/src/core/wee-hdata.c
index 5222af69e..2204af014 100644
--- a/src/core/wee-hdata.c
+++ b/src/core/wee-hdata.c
@@ -236,6 +236,33 @@ hdata_get_list (struct t_hdata *hdata, const char *name)
 }
 
 /*
+ * hdata_check_pointer: check if a pointer is valid for a given hdata/list
+ *                      return 1 if pointer exists in list
+ *                             0 if pointer does not exist
+ */
+
+int
+hdata_check_pointer (struct t_hdata *hdata, void *list, void *pointer)
+{
+    void *ptr_current;
+
+    if (hdata && list && pointer)
+    {
+        if (pointer == list)
+            return 1;
+        ptr_current = list;
+        while (ptr_current)
+        {
+            ptr_current = hdata_move (hdata, ptr_current, 1);
+            if (ptr_current && (ptr_current == pointer))
+                return 1;
+        }
+    }
+
+    return 0;
+}
+
+/*
  * hdata_move: move pointer to another element in list
  */
 
diff --git a/src/core/wee-hdata.h b/src/core/wee-hdata.h
index a55e522eb..66d82202b 100644
--- a/src/core/wee-hdata.h
+++ b/src/core/wee-hdata.h
@@ -61,6 +61,8 @@ extern void *hdata_get_var (struct t_hdata *hdata, void *pointer,
 extern void *hdata_get_var_at_offset (struct t_hdata *hdata, void *pointer,
                                       int offset);
 extern void *hdata_get_list (struct t_hdata *hdata, const char *name);
+extern int hdata_check_pointer (struct t_hdata *hdata, void *list,
+                                void *pointer);
 extern void *hdata_move (struct t_hdata *hdata, void *pointer, int count);
 extern char hdata_char (struct t_hdata *hdata, void *pointer,
                         const char *name);
diff --git a/src/plugins/plugin.c b/src/plugins/plugin.c
index 5242f3293..8b0c85e06 100644
--- a/src/plugins/plugin.c
+++ b/src/plugins/plugin.c
@@ -739,6 +739,7 @@ plugin_load (const char *filename, int argc, char **argv)
         new_plugin->hdata_get_var = &hdata_get_var;
         new_plugin->hdata_get_var_at_offset = &hdata_get_var_at_offset;
         new_plugin->hdata_get_list = &hdata_get_list;
+        new_plugin->hdata_check_pointer = &hdata_check_pointer;
         new_plugin->hdata_move = &hdata_move;
         new_plugin->hdata_char = &hdata_char;
         new_plugin->hdata_integer = &hdata_integer;
diff --git a/src/plugins/scripts/guile/weechat-guile-api.c b/src/plugins/scripts/guile/weechat-guile-api.c
index f2e1be9dc..3cc2683de 100644
--- a/src/plugins/scripts/guile/weechat-guile-api.c
+++ b/src/plugins/scripts/guile/weechat-guile-api.c
@@ -4838,6 +4838,27 @@ weechat_guile_api_hdata_get_list (SCM hdata, SCM name)
 }
 
 /*
+ * weechat_guile_api_hdata_check_pointer: check pointer with hdata/list
+ */
+
+SCM
+weechat_guile_api_hdata_check_pointer (SCM hdata, SCM list, SCM pointer)
+{
+    int value;
+
+    API_FUNC(1, "hdata_check_pointer", API_RETURN_INT(0));
+    if (!scm_is_string (hdata) || !scm_is_string (list)
+        || !scm_is_string (pointer))
+        API_WRONG_ARGS(API_RETURN_INT(0));
+
+    value = weechat_hdata_check_pointer (script_str2ptr (scm_i_string_chars (hdata)),
+                                         script_str2ptr (scm_i_string_chars (list)),
+                                         script_str2ptr (scm_i_string_chars (pointer)));
+
+    API_RETURN_INT(value);
+}
+
+/*
  * weechat_guile_api_hdata_move: move pointer to another element in list
  */
 
@@ -5341,6 +5362,7 @@ weechat_guile_api_module_init (void *data)
     scm_c_define_gsubr ("weechat:hdata_get_var_type_string", 2, 0, 0, &weechat_guile_api_hdata_get_var_type_string);
     scm_c_define_gsubr ("weechat:hdata_get_var_hdata", 2, 0, 0, &weechat_guile_api_hdata_get_var_hdata);
     scm_c_define_gsubr ("weechat:hdata_get_list", 2, 0, 0, &weechat_guile_api_hdata_get_list);
+    scm_c_define_gsubr ("weechat:hdata_check_pointer", 3, 0, 0, &weechat_guile_api_hdata_check_pointer);
     scm_c_define_gsubr ("weechat:hdata_move", 3, 0, 0, &weechat_guile_api_hdata_move);
     scm_c_define_gsubr ("weechat:hdata_char", 3, 0, 0, &weechat_guile_api_hdata_char);
     scm_c_define_gsubr ("weechat:hdata_integer", 3, 0, 0, &weechat_guile_api_hdata_integer);
@@ -5361,16 +5383,20 @@ weechat_guile_api_module_init (void *data)
                   "weechat:string_has_highlight", "weechat:string_has_highlight_regex",
                   "weechat:string_mask_to_regex", "weechat:string_remove_color",
                   "weechat:string_is_command_char", "weechat:string_input_for_buffer",
-                  "weechat:mkdir_home", "weechat:mkdir",
-                  "weechat:mkdir_parents", "weechat:list_new",
-                  "weechat:list_add", "weechat:list_search",
-                  "weechat:list_search_pos", "weechat:list_casesearch",
-                  "weechat:list_casesearch_pos", "weechat:list_get",
-                  "weechat:list_set", "weechat:list_next",
-                  "weechat:list_prev", "weechat:list_string",
-                  "weechat:list_size", "weechat:list_remove",
-                  "weechat:list_remove_all", "weechat:list_free",
-                  "weechat:config_new", "weechat:config_new_section",
+                  NULL);
+    scm_c_export ("weechat:mkdir_home", "weechat:mkdir",
+                  "weechat:mkdir_parents",
+                  NULL);
+    scm_c_export ("weechat:list_new", "weechat:list_add",
+                  "weechat:list_search", "weechat:list_search_pos",
+                  "weechat:list_casesearch", "weechat:list_casesearch_pos",
+                  "weechat:list_get", "weechat:list_set",
+                  "weechat:list_next", "weechat:list_prev",
+                  "weechat:list_string", "weechat:list_size",
+                  "weechat:list_remove", "weechat:list_remove_all",
+                  "weechat:list_free",
+                  NULL);
+    scm_c_export ("weechat:config_new", "weechat:config_new_section",
                   "weechat:config_search_section", "weechat:config_new_option",
                   "weechat:config_search_option", "weechat:config_string_to_boolean",
                   "weechat:config_option_reset", "weechat:config_option_set",
@@ -5388,11 +5414,14 @@ weechat_guile_api_module_init (void *data)
                   "weechat:config_get", "weechat:config_get_plugin",
                   "weechat:config_is_set_plugin", "weechat:config_set_plugin",
                   "weechat:config_set_desc_plugin", "weechat:config_unset_plugin",
-                  "weechat:key_bind", "weechat:key_unbind",
-                  "weechat:prefix", "weechat:color",
+                  NULL);
+    scm_c_export ("weechat:key_bind", "weechat:key_unbind",
+                  NULL);
+    scm_c_export ("weechat:prefix", "weechat:color",
                   "weechat:print", "weechat:print_date_tags",
                   "weechat:print_y", "weechat:log_print",
-                  "weechat:hook_command", "weechat:hook_command_run",
+                  NULL);
+    scm_c_export ("weechat:hook_command", "weechat:hook_command_run",
                   "weechat:hook_timer", "weechat:hook_fd",
                   "weechat:hook_process", "weechat:hook_connect",
                   "weechat:hook_print", "weechat:hook_signal",
@@ -5403,46 +5432,57 @@ weechat_guile_api_module_init (void *data)
                   "weechat:hook_info", "weechat:hook_info_hashtable",
                   "weechat:hook_infolist", "weechat:hook_focus",
                   "weechat:unhook", "weechat:unhook_all",
-                  "weechat:buffer_new", "weechat:buffer_search",
+                  NULL);
+    scm_c_export ("weechat:buffer_new", "weechat:buffer_search",
                   "weechat:buffer_search_main", "weechat:current_buffer",
                   "weechat:buffer_clear", "weechat:buffer_close",
                   "weechat:buffer_merge", "weechat:buffer_unmerge",
                   "weechat:buffer_get_integer", "weechat:buffer_get_string",
                   "weechat:buffer_get_pointer", "weechat:buffer_set",
                   "weechat:buffer_string_replace_local_var", "weechat:buffer_match_list",
-                  "weechat:current_window", "weechat:window_search_with_buffer",
+                  NULL);
+    scm_c_export ("weechat:current_window", "weechat:window_search_with_buffer",
                   "weechat:window_get_integer", "weechat:window_get_string",
                   "weechat:window_get_pointer", "weechat:window_set_title",
-                  "weechat:nicklist_add_group", "weechat:nicklist_search_group",
+                  NULL);
+    scm_c_export ("weechat:nicklist_add_group", "weechat:nicklist_search_group",
                   "weechat:nicklist_add_nick", "weechat:nicklist_search_nick",
                   "weechat:nicklist_remove_group", "weechat:nicklist_remove_nick",
                   "weechat:nicklist_remove_all", "weechat:nicklist_group_get_integer",
                   "weechat:nicklist_group_get_string", "weechat:nicklist_group_get_pointer",
                   "weechat:nicklist_group_set", "weechat:nicklist_nick_get_integer",
                   "weechat:nicklist_nick_get_string", "weechat:nicklist_nick_get_pointer",
-                  "weechat:nicklist_nick_set", "weechat:bar_item_search",
-                  "weechat:bar_item_new", "weechat:bar_item_update",
-                  "weechat:bar_item_remove", "weechat:bar_search",
-                  "weechat:bar_new", "weechat:bar_set",
-                  "weechat:bar_update", "weechat:bar_remove",
-                  "weechat:command", "weechat:info_get",
-                  "weechat:info_get_hashtable", "weechat:infolist_new",
-                  "weechat:infolist_new_item", "weechat:infolist_new_var_integer",
-                  "weechat:infolist_new_var_string", "weechat:infolist_new_var_pointer",
-                  "weechat:infolist_new_var_time", "weechat:infolist_get",
-                  "weechat:infolist_next", "weechat:infolist_prev",
-                  "weechat:infolist_reset_item_cursor", "weechat:infolist_fields",
-                  "weechat:infolist_integer", "weechat:infolist_string",
-                  "weechat:infolist_pointer", "weechat:infolist_time",
-                  "weechat:infolist_free", "weechat:hdata_get",
-                  "weechat:hdata_get_var_offset", "weechat:hdata_get_var_type_string",
-                  "weechat:hdata_get_var_hdata", "weechat:hdata_get_list",
-                  "weechat:hdata_move", "weechat:hdata_integer",
-                  "weechat:hdata_long", "weechat:hdata_string",
-                  "weechat:hdata_pointer", "weechat:hdata_time",
-                  "weechat:hdata_get_string", "weechat:upgrade_new",
-                  "weechat:upgrade_write_object", "weechat:upgrade_read",
-                  "weechat:upgrade_close",
+                  "weechat:nicklist_nick_set",
+                  NULL);
+    scm_c_export ("weechat:bar_item_search", "weechat:bar_item_new",
+                  "weechat:bar_item_update", "weechat:bar_item_remove",
+                  "weechat:bar_search", "weechat:bar_new",
+                  "weechat:bar_set", "weechat:bar_update",
+                  "weechat:bar_remove",
+                  NULL);
+    scm_c_export ("weechat:command",
+                  NULL);
+    scm_c_export ("weechat:info_get", "weechat:info_get_hashtable",
+                  NULL);
+    scm_c_export ("weechat:infolist_new", "weechat:infolist_new_item",
+                  "weechat:infolist_new_var_integer", "weechat:infolist_new_var_string",
+                  "weechat:infolist_new_var_pointer", "weechat:infolist_new_var_time",
+                  "weechat:infolist_get", "weechat:infolist_next",
+                  "weechat:infolist_prev", "weechat:infolist_reset_item_cursor",
+                  "weechat:infolist_fields", "weechat:infolist_integer",
+                  "weechat:infolist_string", "weechat:infolist_pointer",
+                  "weechat:infolist_time", "weechat:infolist_free",
+                  NULL);
+    scm_c_export ("weechat:hdata_get", "weechat:hdata_get_var_offset",
+                  "weechat:hdata_get_var_type_string", "weechat:hdata_get_var_hdata",
+                  "weechat:hdata_get_list", "weechat:hdata_check_pointer",
+                  "weechat:hdata_move", "weechat:hdata_char",
+                  "weechat:hdata_integer", "weechat:hdata_long",
+                  "weechat:hdata_string", "weechat:hdata_pointer",
+                  "weechat:hdata_time", "weechat:hdata_get_string",
+                  NULL);
+    scm_c_export ("weechat:upgrade_new", "weechat:upgrade_write_object",
+                  "weechat:upgrade_read", "weechat:upgrade_close",
                   NULL);
 
     /* interface constants */
diff --git a/src/plugins/scripts/lua/weechat-lua-api.c b/src/plugins/scripts/lua/weechat-lua-api.c
index a9d3ed861..1f59ba5b0 100644
--- a/src/plugins/scripts/lua/weechat-lua-api.c
+++ b/src/plugins/scripts/lua/weechat-lua-api.c
@@ -5330,6 +5330,31 @@ weechat_lua_api_hdata_get_list (lua_State *L)
 }
 
 /*
+ * weechat_lua_api_hdata_check_pointer: check pointer with hdata/list
+ */
+
+static int
+weechat_lua_api_hdata_check_pointer (lua_State *L)
+{
+    const char *hdata, *list, *pointer;
+    int value;
+
+    API_FUNC(1, "hdata_check_pointer", API_RETURN_INT(0));
+    if (lua_gettop (lua_current_interpreter) < 3)
+        API_WRONG_ARGS(API_RETURN_INT(0));
+
+    hdata = lua_tostring (lua_current_interpreter, -3);
+    list = lua_tostring (lua_current_interpreter, -2);
+    pointer = lua_tostring (lua_current_interpreter, -1);
+
+    value = weechat_hdata_check_pointer (script_str2ptr (hdata),
+                                         script_str2ptr (list),
+                                         script_str2ptr (pointer));
+
+    API_RETURN_INT(value);
+}
+
+/*
  * weechat_lua_api_hdata_move: move pointer to another element in list
  */
 
@@ -6238,6 +6263,7 @@ const struct luaL_reg weechat_lua_api_funcs[] = {
     { "hdata_get_var_type_string", &weechat_lua_api_hdata_get_var_type_string },
     { "hdata_get_var_hdata", &weechat_lua_api_hdata_get_var_hdata },
     { "hdata_get_list", &weechat_lua_api_hdata_get_list },
+    { "hdata_check_pointer", &weechat_lua_api_hdata_check_pointer },
     { "hdata_move", &weechat_lua_api_hdata_move },
     { "hdata_char", &weechat_lua_api_hdata_char },
     { "hdata_integer", &weechat_lua_api_hdata_integer },
diff --git a/src/plugins/scripts/perl/weechat-perl-api.c b/src/plugins/scripts/perl/weechat-perl-api.c
index bae033256..ea9491389 100644
--- a/src/plugins/scripts/perl/weechat-perl-api.c
+++ b/src/plugins/scripts/perl/weechat-perl-api.c
@@ -5070,6 +5070,31 @@ XS (XS_weechat_api_hdata_get_list)
 }
 
 /*
+ * weechat::hdata_check_pointer: check pointer with hdata/list
+ */
+
+XS (XS_weechat_api_hdata_check_pointer)
+{
+    char *hdata, *list, *pointer;
+    int value;
+    dXSARGS;
+
+    API_FUNC(1, "hdata_check_pointer", API_RETURN_INT(0));
+    if (items < 3)
+        API_WRONG_ARGS(API_RETURN_INT(0));
+
+    hdata = SvPV_nolen (ST (0));
+    list = SvPV_nolen (ST (1));
+    pointer = SvPV_nolen (ST (2));
+
+    value = weechat_hdata_check_pointer (script_str2ptr (hdata),
+                                         script_str2ptr (list),
+                                         script_str2ptr (pointer));
+
+    API_RETURN_INT(value);
+}
+
+/*
  * weechat::hdata_move: move pointer to another element in list
  */
 
@@ -5595,6 +5620,7 @@ weechat_perl_api_init (pTHX)
     newXS ("weechat::hdata_get_var_type_string", XS_weechat_api_hdata_get_var_type_string, "weechat");
     newXS ("weechat::hdata_get_var_hdata", XS_weechat_api_hdata_get_var_hdata, "weechat");
     newXS ("weechat::hdata_get_list", XS_weechat_api_hdata_get_list, "weechat");
+    newXS ("weechat::hdata_check_pointer", XS_weechat_api_hdata_check_pointer, "weechat");
     newXS ("weechat::hdata_move", XS_weechat_api_hdata_move, "weechat");
     newXS ("weechat::hdata_char", XS_weechat_api_hdata_char, "weechat");
     newXS ("weechat::hdata_integer", XS_weechat_api_hdata_integer, "weechat");
diff --git a/src/plugins/scripts/python/weechat-python-api.c b/src/plugins/scripts/python/weechat-python-api.c
index c02716c73..0048ee518 100644
--- a/src/plugins/scripts/python/weechat-python-api.c
+++ b/src/plugins/scripts/python/weechat-python-api.c
@@ -5250,6 +5250,30 @@ weechat_python_api_hdata_get_list (PyObject *self, PyObject *args)
 }
 
 /*
+ * weechat_python_api_hdata_check_pointer: check pointer with hdata/list
+ */
+
+static PyObject *
+weechat_python_api_hdata_check_pointer (PyObject *self, PyObject *args)
+{
+    char *hdata, *list, *pointer;
+    int value;
+
+    API_FUNC(1, "hdata_check_pointer", API_RETURN_INT(0));
+    hdata = NULL;
+    list = NULL;
+    pointer = NULL;
+    if (!PyArg_ParseTuple (args, "sss", &hdata, &list, &pointer))
+        API_WRONG_ARGS(API_RETURN_INT(0));
+
+    value = weechat_hdata_check_pointer (script_str2ptr (hdata),
+                                         script_str2ptr (list),
+                                         script_str2ptr (pointer));
+
+    API_RETURN_INT(value);
+}
+
+/*
  * weechat_python_api_hdata_move: move pointer to another element in list
  */
 
@@ -5765,6 +5789,7 @@ PyMethodDef weechat_python_funcs[] =
     { "hdata_get_var_type_string", &weechat_python_api_hdata_get_var_type_string, METH_VARARGS, "" },
     { "hdata_get_var_hdata", &weechat_python_api_hdata_get_var_hdata, METH_VARARGS, "" },
     { "hdata_get_list", &weechat_python_api_hdata_get_list, METH_VARARGS, "" },
+    { "hdata_check_pointer", &weechat_python_api_hdata_check_pointer, METH_VARARGS, "" },
     { "hdata_move", &weechat_python_api_hdata_move, METH_VARARGS, "" },
     { "hdata_char", &weechat_python_api_hdata_char, METH_VARARGS, "" },
     { "hdata_integer", &weechat_python_api_hdata_integer, METH_VARARGS, "" },
diff --git a/src/plugins/scripts/ruby/weechat-ruby-api.c b/src/plugins/scripts/ruby/weechat-ruby-api.c
index 3ffb20bdf..21c52923b 100644
--- a/src/plugins/scripts/ruby/weechat-ruby-api.c
+++ b/src/plugins/scripts/ruby/weechat-ruby-api.c
@@ -6029,6 +6029,36 @@ weechat_ruby_api_hdata_get_list (VALUE class, VALUE hdata, VALUE name)
 }
 
 /*
+ * weechat_ruby_api_hdata_check_pointer: check pointer with hdata/list
+ */
+
+static VALUE
+weechat_ruby_api_hdata_check_pointer (VALUE class, VALUE hdata, VALUE list,
+                                      VALUE pointer)
+{
+    char *c_hdata, *c_list, *c_pointer;
+    int value;
+
+    API_FUNC(1, "hdata_check_pointer", API_RETURN_INT(0));
+    if (NIL_P (hdata) || NIL_P (list) || NIL_P (pointer))
+        API_WRONG_ARGS(API_RETURN_INT(0));
+
+    Check_Type (hdata, T_STRING);
+    Check_Type (list, T_STRING);
+    Check_Type (pointer, T_STRING);
+
+    c_hdata = StringValuePtr (hdata);
+    c_list = StringValuePtr (list);
+    c_pointer = StringValuePtr (pointer);
+
+    value = weechat_hdata_check_pointer (script_str2ptr (c_hdata),
+                                         script_str2ptr (c_list),
+                                         script_str2ptr (c_pointer));
+
+    API_RETURN_INT(value);
+}
+
+/*
  * weechat_ruby_api_hdata_move: move pointer to another element in list
  */
 
@@ -6657,6 +6687,7 @@ weechat_ruby_api_init (VALUE ruby_mWeechat)
     rb_define_module_function (ruby_mWeechat, "hdata_get_var_type_string", &weechat_ruby_api_hdata_get_var_type_string, 2);
     rb_define_module_function (ruby_mWeechat, "hdata_get_var_hdata", &weechat_ruby_api_hdata_get_var_hdata, 2);
     rb_define_module_function (ruby_mWeechat, "hdata_get_list", &weechat_ruby_api_hdata_get_list, 2);
+    rb_define_module_function (ruby_mWeechat, "hdata_check_pointer", &weechat_ruby_api_hdata_check_pointer, 3);
     rb_define_module_function (ruby_mWeechat, "hdata_move", &weechat_ruby_api_hdata_move, 3);
     rb_define_module_function (ruby_mWeechat, "hdata_char", &weechat_ruby_api_hdata_char, 3);
     rb_define_module_function (ruby_mWeechat, "hdata_integer", &weechat_ruby_api_hdata_integer, 3);
diff --git a/src/plugins/scripts/tcl/weechat-tcl-api.c b/src/plugins/scripts/tcl/weechat-tcl-api.c
index c8f797185..81b9cb5ce 100644
--- a/src/plugins/scripts/tcl/weechat-tcl-api.c
+++ b/src/plugins/scripts/tcl/weechat-tcl-api.c
@@ -5773,6 +5773,33 @@ weechat_tcl_api_hdata_get_list (ClientData clientData, Tcl_Interp *interp,
 }
 
 /*
+ * weechat_tcl_api_hdata_check_pointer: check pointer with hdata/list
+ */
+
+static int
+weechat_tcl_api_hdata_check_pointer (ClientData clientData, Tcl_Interp *interp,
+                                     int objc, Tcl_Obj *CONST objv[])
+{
+    Tcl_Obj *objp;
+    char *hdata, *list, *pointer;
+    int result, i;
+
+    API_FUNC(1, "hdata_check_pointer", API_RETURN_INT(0));
+    if (objc < 4)
+        API_WRONG_ARGS(API_RETURN_INT(0));
+
+    hdata = Tcl_GetStringFromObj (objv[1], &i);
+    list = Tcl_GetStringFromObj (objv[2], &i);
+    pointer = Tcl_GetStringFromObj (objv[3], &i);
+
+    result = weechat_hdata_check_pointer (script_str2ptr (hdata),
+                                          script_str2ptr (list),
+                                          script_str2ptr (pointer));
+
+    API_RETURN_INT(result);
+}
+
+/*
  * weechat_tcl_api_hdata_move: move pointer to another element in list
  */
 
@@ -6568,6 +6595,8 @@ void weechat_tcl_api_init (Tcl_Interp *interp)
                           weechat_tcl_api_hdata_get_var_hdata, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL);
     Tcl_CreateObjCommand (interp, "weechat::hdata_get_list",
                           weechat_tcl_api_hdata_get_list, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL);
+    Tcl_CreateObjCommand (interp, "weechat::hdata_check_pointer",
+                          weechat_tcl_api_hdata_check_pointer, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL);
     Tcl_CreateObjCommand (interp, "weechat::hdata_move",
                           weechat_tcl_api_hdata_move, (ClientData)NULL, (Tcl_CmdDeleteProc*)NULL);
     Tcl_CreateObjCommand (interp, "weechat::hdata_integer",
diff --git a/src/plugins/weechat-plugin.h b/src/plugins/weechat-plugin.h
index 32ac0be96..058d70106 100644
--- a/src/plugins/weechat-plugin.h
+++ b/src/plugins/weechat-plugin.h
@@ -46,7 +46,7 @@ struct timeval;
  */
 
 /* API version (used to check that plugin has same API and can be loaded) */
-#define WEECHAT_PLUGIN_API_VERSION "20111206-01"
+#define WEECHAT_PLUGIN_API_VERSION "20111217-01"
 
 /* macros for defining plugin infos */
 #define WEECHAT_PLUGIN_NAME(__name)                                     \
@@ -827,6 +827,8 @@ struct t_weechat_plugin
     void *(*hdata_get_var_at_offset) (struct t_hdata *hdata, void *pointer,
                                       int offset);
     void *(*hdata_get_list) (struct t_hdata *hdata, const char *name);
+    int (*hdata_check_pointer) (struct t_hdata *hdata, void *list,
+                                void *pointer);
     void *(*hdata_move) (struct t_hdata *hdata, void *pointer, int count);
     char (*hdata_char) (struct t_hdata *hdata, void *pointer,
                         const char *name);
@@ -1573,6 +1575,8 @@ extern int weechat_plugin_end (struct t_weechat_plugin *plugin);
                                             __offset)
 #define weechat_hdata_get_list(__hdata, __name)                         \
     weechat_plugin->hdata_get_list(__hdata, __name)
+#define weechat_hdata_check_pointer(__hdata, __list, __pointer)         \
+    weechat_plugin->hdata_check_pointer(__hdata, __list, __pointer)
 #define weechat_hdata_move(__hdata, __pointer, __count)                 \
     weechat_plugin->hdata_move(__hdata, __pointer, __count)
 #define weechat_hdata_char(__hdata, __pointer, __name)                  \