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 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 #include "mail.h"
31 /*
32 * Get comment field, if any, from line.
33 * 1 ==> found comment.
34 * 0 ==> no comment found.
35 * -1 ==> no closing (terminating) paren found for comment.
36 */
37
38 int
getcomment(char * s,char * q)39 getcomment(char *s, char *q)
40 /* Copy comment, if found, to q */
41 {
42 char *p, *sav_q;
43 int depth = 0;
44
45 if ((p = strchr(s, '(')) == (char *)NULL) {
46 /* no comment found */
47 return (0);
48 }
49 sav_q = q;
50 while (*p) {
51 *q++ = *p;
52 if (*p == ')') {
53 /* account for nested parens within comment */
54 depth--;
55 if (depth == 0) {
56 break;
57 }
58 } else if (*p == '(') {
59 depth++;
60 }
61 p++;
62 }
63 *q = '\0';
64 if (*p != ')') {
65 /* closing paren not found */
66 *sav_q = '\0';
67 return (-1);
68 }
69 /* found comment */
70 return (1);
71 }
72