| 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 | } |