addstring.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 */
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */
#include "string.h"
#include "errno.h"
#include "stdlib.h"
#include "lp.h"
/**
** addstring() - ADD ONE STRING TO ANOTHER, ALLOCATING SPACE AS NEEDED
**/
int
#if defined(__STDC__)
addstring (
char ** dst,
char * src
)
#else
addstring (dst, src)
char **dst;
char *src;
#endif
{
size_t len;
if (!dst || !src) {
errno = EINVAL;
return (-1);
}
len = strlen(src) + 1;
if (*dst) {
if (!(*dst = Realloc(*dst, strlen(*dst) + len))) {
errno = ENOMEM;
return (-1);
}
} else {
if (!(*dst = Malloc(len))) {
errno = ENOMEM;
return (-1);
}
(*dst)[0] = '\0';
}
(void) strcat(*dst, src);
return (0);
}