File: | src/usr.bin/unvis/unvis.c |
Warning: | line 56, column 2 Value stored to 'argc' is never read |
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1 | /* $OpenBSD: unvis.c,v 1.14 2015/10/09 01:37:09 deraadt Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1989, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | */ |
31 | |
32 | #include <err.h> |
33 | #include <stdio.h> |
34 | #include <stdlib.h> |
35 | #include <unistd.h> |
36 | #include <vis.h> |
37 | |
38 | void process(FILE *fp, const char *filename); |
39 | |
40 | int |
41 | main(int argc, char *argv[]) |
42 | { |
43 | FILE *fp; |
44 | int ch; |
45 | |
46 | if (pledge("stdio rpath", NULL((void *)0)) == -1) |
47 | err(1, "pledge"); |
48 | |
49 | while ((ch = getopt(argc, argv, "")) != -1) |
50 | switch(ch) { |
51 | case '?': |
52 | default: |
53 | (void) fprintf(stderr(&__sF[2]), "usage: unvis [file ...]\n"); |
54 | exit(1); |
55 | } |
56 | argc -= optind; |
Value stored to 'argc' is never read | |
57 | argv += optind; |
58 | |
59 | if (*argv) |
60 | while (*argv) { |
61 | if ((fp=fopen(*argv, "r")) != NULL((void *)0)) { |
62 | process(fp, *argv); |
63 | fclose(fp); |
64 | } else |
65 | warn("%s", *argv); |
66 | argv++; |
67 | } |
68 | else { |
69 | if (pledge("stdio", NULL((void *)0)) == -1) |
70 | err(1, "pledge"); |
71 | |
72 | process(stdin(&__sF[0]), "<stdin>"); |
73 | } |
74 | exit(0); |
75 | } |
76 | |
77 | void |
78 | process(FILE *fp, const char *filename) |
79 | { |
80 | int offset = 0, c, ret; |
81 | int state = 0; |
82 | char outc; |
83 | |
84 | while ((c = getc(fp)(!__isthreaded ? (--(fp)->_r < 0 ? __srget(fp) : (int)( *(fp)->_p++)) : (getc)(fp))) != EOF(-1)) { |
85 | offset++; |
86 | again: |
87 | switch(ret = unvis(&outc, (char)c, &state, 0)) { |
88 | case UNVIS_VALID1: |
89 | putchar(outc)(!__isthreaded ? __sputc(outc, (&__sF[1])) : (putc)(outc, (&__sF[1]))); |
90 | break; |
91 | case UNVIS_VALIDPUSH2: |
92 | putchar(outc)(!__isthreaded ? __sputc(outc, (&__sF[1])) : (putc)(outc, (&__sF[1]))); |
93 | goto again; |
94 | case UNVIS_SYNBAD-1: |
95 | warnx("%s: offset: %d: can't decode", filename, offset); |
96 | state = 0; |
97 | break; |
98 | case 0: |
99 | case UNVIS_NOCHAR3: |
100 | break; |
101 | default: |
102 | errx(1, "bad return value (%d), can't happen", ret); |
103 | /* NOTREACHED */ |
104 | } |
105 | } |
106 | if (unvis(&outc, (char)0, &state, UNVIS_END1) == UNVIS_VALID1) |
107 | putchar(outc)(!__isthreaded ? __sputc(outc, (&__sF[1])) : (putc)(outc, (&__sF[1]))); |
108 | } |