1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */
27*0Sstevel@tonic-gate /*
28*0Sstevel@tonic-gate Place the `len' length substring of `as' starting at `as[origin]'
29*0Sstevel@tonic-gate in `aresult'.
30*0Sstevel@tonic-gate Return `aresult'.
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate Note: The copying of as to aresult stops if either the
33*0Sstevel@tonic-gate specified number (len) characters have been copied,
34*0Sstevel@tonic-gate or if the end of as is found.
35*0Sstevel@tonic-gate A negative len generally guarantees that everything gets copied.
36*0Sstevel@tonic-gate */
37*0Sstevel@tonic-gate
substr(as,aresult,origin,len)38*0Sstevel@tonic-gate char *substr(as, aresult, origin, len)
39*0Sstevel@tonic-gate char *as, *aresult;
40*0Sstevel@tonic-gate int origin;
41*0Sstevel@tonic-gate register unsigned len;
42*0Sstevel@tonic-gate {
43*0Sstevel@tonic-gate register char *s, *result;
44*0Sstevel@tonic-gate
45*0Sstevel@tonic-gate s = as + origin;
46*0Sstevel@tonic-gate result = aresult;
47*0Sstevel@tonic-gate ++len;
48*0Sstevel@tonic-gate while (--len && (*result++ = *s++)) ;
49*0Sstevel@tonic-gate if (len == 0)
50*0Sstevel@tonic-gate *result = 0;
51*0Sstevel@tonic-gate return(aresult);
52*0Sstevel@tonic-gate }
53