1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25
26#ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.3	*/
27
28#include "string.h"
29#include "errno.h"
30#include "stdlib.h"
31
32#include "lp.h"
33
34/**
35 ** addstring() - ADD ONE STRING TO ANOTHER, ALLOCATING SPACE AS NEEDED
36 **/
37
38int
39#if	defined(__STDC__)
40addstring (
41	char **			dst,
42	char *			src
43)
44#else
45addstring (dst, src)
46	char			**dst;
47	char			*src;
48#endif
49{
50	size_t			len;
51
52	if (!dst || !src) {
53		errno = EINVAL;
54		return (-1);
55	}
56
57	len = strlen(src) + 1;
58
59	if (*dst) {
60		if (!(*dst = Realloc(*dst, strlen(*dst) + len))) {
61			errno = ENOMEM;
62			return (-1);
63		}
64	} else {
65		if (!(*dst = Malloc(len))) {
66			errno = ENOMEM;
67			return (-1);
68		}
69		(*dst)[0] = '\0';
70	}
71
72	(void) strcat(*dst, src);
73	return (0);
74}
75