varinsert.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1986 AT&T
* All Rights Reserved
*/
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
#include <stdio.h>
#include "wish.h"
#include "var_arrays.h"
/*
* insert an element at position "position" in a v_array
*/
struct v_array *
array_insert(array, element, position)
struct v_array array[];
char *element;
unsigned position;
{
register struct v_array *ptr;
ptr = v_header(array);
if (position > ptr->tot_used)
return array;
ptr = v_header(array_grow(array, 1));
if (position < ptr->tot_used - 1)
memshift(ptr_to_ele(ptr, position + 1), ptr_to_ele(ptr, position), ptr->ele_size * (ptr->tot_used - position - 1));
if (element != NULL)
memcpy(ptr_to_ele(ptr, position), element, ptr->ele_size);
return v_body(ptr);
}