BSD 4_4 release
[unix-history] / usr / src / contrib / nvi / nvi / vi / v_comment.c
CommitLineData
ad787160
C
1/*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
c0567266
KB
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
ad787160
C
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)v_comment.c 8.1 (Berkeley) 6/9/93";
36#endif /* not lint */
37
38#include <sys/types.h>
39#include <string.h>
40
41#include "vi.h"
42#include "vcmd.h"
43
44int
45v_comment(sp, ep)
46 SCR *sp;
47 EXF *ep;
48{
49 recno_t lno;
50 size_t len;
51 char *p;
52
53 for (lno = 1;
54 (p = file_gline(sp, ep, lno, &len)) != NULL && len == 0; ++lno);
55 if (p == NULL || len <= 1 || memcmp(p, "/*", 2))
56 return (0);
57 do {
58 for (; len; --len, ++p)
59 if (p[0] == '*' && len > 1 && p[1] == '/') {
60 sp->lno = lno;
61 return (0);
62 }
63 } while ((p = file_gline(sp, ep, ++lno, &len)) != NULL);
64 return (0);
65}