--- libaitio/src/Attic/array.c	2011/10/31 13:53:51	1.5
+++ libaitio/src/Attic/array.c	2011/12/12 14:45:19	1.5.2.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: array.c,v 1.5 2011/10/31 13:53:51 misho Exp $
+* $Id: array.c,v 1.5.2.1 2011/12/12 14:45:19 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -294,6 +294,31 @@ io_arrayVacuum(array_t * __restrict arr, int fromWhere
 }
 
 /*
+ * io_arrayElem() - Always GET/PUT element into dynamic array, if not enough elements grow array
+ * @arr = Array
+ * @n = Position
+ * @data = Element, if set NULL GET element at position or !=NULL PUT element at position
+ * return: -1 error or !=-1 return element at position
+ */
+inline void *
+io_arrayElem(array_t * __restrict arr, int n, void **data)
+{
+	void *dat = NULL;
+
+	if (!arr)
+		return (void*) -1;
+
+	if (n > io_arraySize(arr) && io_arrayGrow(arr, n + 1, 0))
+		return (void*) -1;
+
+	dat = io_arrayGet(arr, n);
+	if (data)
+		io_arraySet(arr, n, *data);
+
+	return dat;
+}
+
+/*
  * io_arrayPush() - Push element into dynamic array like stack manner, place at first empty position
  * @arr = Array
  * @data = Element, if set NULL return only first empty position
@@ -305,6 +330,9 @@ io_arrayPush(array_t * __restrict arr, void **data)
 	register int i;
 	int ret = -1;
 
+	if (!arr)
+		return -1;
+
 	for (i = 0; i < io_arraySize(arr); i++)
 		if (!arr->arr_data[i]) {
 			if (data)
@@ -328,6 +356,9 @@ io_arrayPop(array_t * __restrict arr, void ** __restri
 {
 	register int i;
 	int ret = -1;
+
+	if (!arr)
+		return -1;
 
 	for (i = io_arraySize(arr) - 1; i >= 0; i--)
 		if (arr->arr_data[i]) {