1 /* $OpenBSD: rev.c,v 1.13 2016/04/10 17:06:52 martijn Exp $ */
2 /* $NetBSD: rev.c,v 1.5 1995/09/28 08:49:40 tls Exp $ */
5 * Copyright (c) 1987, 1992, 1993
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/types.h>
43 int isu8cont(unsigned char);
47 main(int argc
, char *argv
[])
49 char *filename
, *p
= NULL
, *t
, *u
;
55 setlocale(LC_CTYPE
, "");
57 if (pledge("stdio rpath", NULL
) == -1)
60 while ((ch
= getopt(argc
, argv
, "")) != -1)
74 if ((fp
= fopen(*argv
, "r")) == NULL
) {
82 while ((len
= getline(&p
, &ps
, fp
)) != -1) {
83 if (p
[len
- 1] == '\n')
85 for (t
= p
+ len
- 1; t
>= p
; --t
) {
91 } while (isu8cont(*(++u
)));
105 isu8cont(unsigned char c
)
107 return MB_CUR_MAX
> 1 && (c
& (0x80 | 0x40)) == 0x80;
113 extern char *__progname
;
115 (void)fprintf(stderr
, "usage: %s [file ...]\n", __progname
);