| File: | src/usr.bin/rev/rev.c |
| Warning: | line 66, column 2 Value stored to 'argc' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 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; |
Value stored to 'argc' is never read | |
| 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 | } |