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
38 int
39 #if defined(__STDC__)
addstring(char ** dst,char * src)40 addstring (
41 char ** dst,
42 char * src
43 )
44 #else
45 addstring (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