Add g_slist_nth, g_slist_nth_data, g_slist_last and g_slist_position functions to eglib.

2 files changed, 42 insertions, 0 deletions

diff --git a/eglib/gmain.c b/eglib/gmain.c
index d2f002f8..89794c05 100644
--- a/eglib/gmain.c
+++ b/eglib/gmain.c
@@ -1127,6 +1127,43 @@ void g_slist_free(GSList *list)
 	}
 }
 
+GSList *g_slist_nth(GSList *list, guint n)
+{
+	while (n-- > 0 && list)
+		list = list->next;
+
+	return list;
+}
+
+gpointer g_slist_nth_data(GSList *list, guint n)
+{
+	while (n-- > 0 && list)
+		list = list->next;
+
+	return list ? list->data : NULL;
+}
+
+gint g_slist_position(GSList *list, GSList *link)
+{
+	gint i;
+
+	for (i = 0; list; list = list->next, i++) {
+		if (list == link)
+			return i;
+	}
+
+	return -1;
+}
+
+GSList* g_slist_last(GSList *list)
+{
+	if (list)
+		while (list->next)
+			list = list->next;
+
+	return list;
+}
+
 /* Memory allocation functions */
 
 gpointer g_malloc(gulong n_bytes)
diff --git a/eglib/gmain.h b/eglib/gmain.h
index ce9bdce5..c75f25d2 100644
--- a/eglib/gmain.h
+++ b/eglib/gmain.h
@@ -192,6 +192,11 @@ int g_slist_length(GSList *list);
 void g_slist_foreach(GSList *list, GFunc func, void *user_data);
 void g_slist_free(GSList *list);
 
+GSList *g_slist_nth(GSList *list, guint n);
+gpointer g_slist_nth_data(GSList *list, guint n);
+int g_slist_position(GSList *list, GSList *link);
+GSList* g_slist_last(GSList *list);
+
 /* End GSList declarations */
 
 /* Memory allocation related */