api: add new function hdata_check_pointer

1 files changed, 27 insertions, 0 deletions

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
  */