1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/* $OpenBSD: rev.c,v 1.13 2016/04/10 17:06:52 martijn Exp $ */
/* $NetBSD: rev.c,v 1.5 1995/09/28 08:49:40 tls Exp $ */
/*-
* Copyright (c) 1987, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int isu8cont(unsigned char);
void usage(void);
int
main(int argc, char *argv[])
{
char *filename, *p = NULL, *t, *u;
FILE *fp;
ssize_t len;
size_t ps = 0;
int ch, rval;
setlocale(LC_CTYPE, "");
if (pledge("stdio rpath", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "")) != -1)
switch(ch) {
default:
usage();
}
argc -= optind;
argv += optind;
fp = stdin;
filename = "stdin";
rval = 0;
do {
if (*argv) {
if ((fp = fopen(*argv, "r")) == NULL) {
warn("%s", *argv);
rval = 1;
++argv;
continue;
}
filename = *argv++;
}
while ((len = getline(&p, &ps, fp)) != -1) {
if (p[len - 1] == '\n')
--len;
for (t = p + len - 1; t >= p; --t) {
if (isu8cont(*t))
continue;
u = t;
do {
putchar(*u);
} while (isu8cont(*(++u)));
}
putchar('\n');
}
if (ferror(fp)) {
warn("%s", filename);
rval = 1;
}
(void)fclose(fp);
} while(*argv);
return rval;
}
int
isu8cont(unsigned char c)
{
return MB_CUR_MAX > 1 && (c & (0x80 | 0x40)) == 0x80;
}
void
usage(void)
{
extern char *__progname;
(void)fprintf(stderr, "usage: %s [file ...]\n", __progname);
exit(1);
}
|
