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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #include <sys/types.h>
33 #include <string.h>
34
35 /*
36 * Trim trailing characters from a string.
37 * Returns pointer to the first character in the string
38 * to be trimmed (tc).
39 */
40
41 char *
strrspn(const char * string,const char * tc)42 strrspn(const char *string, const char *tc)
43 {
44 char *p;
45
46 p = (char *)string + strlen(string);
47 while (p != (char *)string)
48 if (!strchr(tc, *--p))
49 return (++p);
50
51 return (p);
52 }
53