File: | src/usr.bin/rev/rev.c |
Warning: | line 95, column 7 Access to field '_flags' results in a dereference of a null pointer (loaded from variable 'fp') |
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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 $ */ | |||
3 | ||||
4 | /*- | |||
5 | * Copyright (c) 1987, 1992, 1993 | |||
6 | * The Regents of the University of California. All rights reserved. | |||
7 | * | |||
8 | * Redistribution and use in source and binary forms, with or without | |||
9 | * modification, are permitted provided that the following conditions | |||
10 | * are met: | |||
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. | |||
19 | * | |||
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 | |||
30 | * SUCH DAMAGE. | |||
31 | */ | |||
32 | ||||
33 | #include <sys/types.h> | |||
34 | ||||
35 | #include <err.h> | |||
36 | #include <errno(*__errno()).h> | |||
37 | #include <locale.h> | |||
38 | #include <stdio.h> | |||
39 | #include <stdlib.h> | |||
40 | #include <string.h> | |||
41 | #include <unistd.h> | |||
42 | ||||
43 | int isu8cont(unsigned char); | |||
44 | void usage(void); | |||
45 | ||||
46 | int | |||
47 | main(int argc, char *argv[]) | |||
48 | { | |||
49 | char *filename, *p = NULL((void *)0), *t, *u; | |||
50 | FILE *fp; | |||
51 | ssize_t len; | |||
52 | size_t ps = 0; | |||
53 | int ch, rval; | |||
54 | ||||
55 | setlocale(LC_CTYPE2, ""); | |||
56 | ||||
57 | if (pledge("stdio rpath", NULL((void *)0)) == -1) | |||
| ||||
58 | err(1, "pledge"); | |||
59 | ||||
60 | while ((ch = getopt(argc, argv, "")) != -1) | |||
61 | switch(ch) { | |||
62 | default: | |||
63 | usage(); | |||
64 | } | |||
65 | ||||
66 | argc -= optind; | |||
67 | argv += optind; | |||
68 | ||||
69 | fp = stdin(&__sF[0]); | |||
70 | filename = "stdin"; | |||
71 | rval = 0; | |||
72 | do { | |||
73 | if (*argv) { | |||
74 | if ((fp = fopen(*argv, "r")) == NULL((void *)0)) { | |||
75 | warn("%s", *argv); | |||
76 | rval = 1; | |||
77 | ++argv; | |||
78 | continue; | |||
79 | } | |||
80 | filename = *argv++; | |||
81 | } | |||
82 | while ((len = getline(&p, &ps, fp)) != -1) { | |||
83 | if (p[len - 1] == '\n') | |||
84 | --len; | |||
85 | for (t = p + len - 1; t >= p; --t) { | |||
86 | if (isu8cont(*t)) | |||
87 | continue; | |||
88 | u = t; | |||
89 | do { | |||
90 | putchar(*u)(!__isthreaded ? __sputc(*u, (&__sF[1])) : (putc)(*u, (& __sF[1]))); | |||
91 | } while (isu8cont(*(++u))); | |||
92 | } | |||
93 | putchar('\n')(!__isthreaded ? __sputc('\n', (&__sF[1])) : (putc)('\n', (&__sF[1]))); | |||
94 | } | |||
95 | if (ferror(fp)(!__isthreaded ? (((fp)->_flags & 0x0040) != 0) : (ferror )(fp))) { | |||
| ||||
96 | warn("%s", filename); | |||
97 | rval = 1; | |||
98 | } | |||
99 | (void)fclose(fp); | |||
100 | } while(*argv); | |||
101 | return rval; | |||
102 | } | |||
103 | ||||
104 | int | |||
105 | isu8cont(unsigned char c) | |||
106 | { | |||
107 | return MB_CUR_MAX__mb_cur_max() > 1 && (c & (0x80 | 0x40)) == 0x80; | |||
108 | } | |||
109 | ||||
110 | void | |||
111 | usage(void) | |||
112 | { | |||
113 | extern char *__progname; | |||
114 | ||||
115 | (void)fprintf(stderr(&__sF[2]), "usage: %s [file ...]\n", __progname); | |||
116 | exit(1); | |||
117 | } |