tr.c (7223B)
- // SPDX-License-Identifier: BSD-3-Clause
- /* $OpenBSD: tr.c,v 1.22 2022/12/04 23:50:49 cheloha Exp $ */
- /* $NetBSD: tr.c,v 1.5 1995/08/31 22:13:48 jtc Exp $ */
- /*
- * Copyright (c) 1988, 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.
- */
- #define _DEFAULT_SOURCE
- #include "../lib/tr_str.h"
- #include <err.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <strings.h> // bzero
- #include <sys/types.h>
- #include <unistd.h>
- int delete[NCHARS], squeeze[NCHARS];
- int translate[NCHARS] = {
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */
- 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
- 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
- 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
- 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
- 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
- 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
- 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
- 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
- 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
- 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
- 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
- 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
- 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
- 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
- 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
- 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
- };
- STR s1 = {STRING1, NORMAL, 0, OOBCH, {0, OOBCH}, NULL, NULL};
- STR s2 = {STRING2, NORMAL, 0, OOBCH, {0, OOBCH}, NULL, NULL};
- const char *argv0 = "tr";
- static void setup(int *, char *, STR *, int);
- static void usage(void);
- int
- main(int argc, char *argv[])
- {
- int ch, cnt, lastch, *p;
- int cflag, dflag, sflag;
- cflag = dflag = sflag = 0;
- while((ch = getopt(argc, argv, "Ccds")) != -1)
- {
- switch(ch)
- {
- case 'C':
- case 'c':
- cflag = 1;
- break;
- case 'd':
- dflag = 1;
- break;
- case 's':
- sflag = 1;
- break;
- case ':':
- fprintf(stderr, "%s: error: Option '-%c' requires an operand\n", argv0, optopt);
- usage();
- return 1;
- case '?':
- fprintf(stderr, "%s: error: Unhandled option '-%c'\n", argv0, optopt);
- usage();
- return 1;
- default:
- fprintf(stderr, "%s: error: Unhandled getopt case '%c'\n", argv0, ch);
- usage();
- abort();
- }
- }
- argc -= optind;
- argv += optind;
- if(argc < 1 || argc > 2) usage();
- /*
- * tr -ds [-Cc] string1 string2
- * Delete all characters (or complemented characters) in string1.
- * Squeeze all characters in string2.
- */
- if(dflag && sflag)
- {
- if(argc != 2) usage();
- setup(delete, argv[0], &s1, cflag);
- setup(squeeze, argv[1], &s2, 0);
- for(lastch = OOBCH; (ch = getchar()) != EOF;)
- if(!delete[ch] && (!squeeze[ch] || lastch != ch))
- {
- lastch = ch;
- (void)putchar(ch);
- }
- exit(0);
- }
- /*
- * tr -d [-Cc] string1
- * Delete all characters (or complemented characters) in string1.
- */
- if(dflag)
- {
- if(argc != 1) usage();
- setup(delete, argv[0], &s1, cflag);
- while((ch = getchar()) != EOF)
- if(!delete[ch]) (void)putchar(ch);
- exit(0);
- }
- /*
- * tr -s [-Cc] string1
- * Squeeze all characters (or complemented characters) in string1.
- */
- if(sflag && argc == 1)
- {
- setup(squeeze, argv[0], &s1, cflag);
- for(lastch = OOBCH; (ch = getchar()) != EOF;)
- if(!squeeze[ch] || lastch != ch)
- {
- lastch = ch;
- (void)putchar(ch);
- }
- exit(0);
- }
- /*
- * tr [-Ccs] string1 string2
- * Replace all characters (or complemented characters) in string1 with
- * the character in the same position in string2. If the -s option is
- * specified, squeeze all the characters in string2.
- */
- if(argc != 2) usage();
- s1.str = (unsigned char *)argv[0];
- s2.str = (unsigned char *)argv[1];
- if(cflag)
- for(cnt = NCHARS, p = translate; cnt--;)
- *p++ = OOBCH;
- if(!next(&s2)) errx(1, "error: empty string2");
- /* If string2 runs out of characters, use the last one specified. */
- ch = s2.lastch;
- if(sflag)
- while(next(&s1))
- {
- translate[s1.lastch] = ch = s2.lastch;
- squeeze[ch] = 1;
- (void)next(&s2);
- }
- else
- while(next(&s1))
- {
- translate[s1.lastch] = ch = s2.lastch;
- (void)next(&s2);
- }
- if(cflag)
- for(cnt = 0, p = translate; cnt < NCHARS; ++p, ++cnt)
- *p = *p == OOBCH ? ch : cnt;
- if(sflag)
- for(lastch = OOBCH; (ch = getchar()) != EOF;)
- {
- ch = translate[ch];
- if(!squeeze[ch] || lastch != ch)
- {
- lastch = ch;
- (void)putchar(ch);
- }
- }
- else
- while((ch = getchar()) != EOF)
- (void)putchar(translate[ch]);
- exit(0);
- }
- static void
- setup(int *table, char *arg, STR *str, int cflag)
- {
- int cnt, *p;
- str->str = (unsigned char *)arg;
- bzero(table, NCHARS * sizeof(int));
- while(next(str))
- table[str->lastch] = 1;
- if(cflag)
- for(p = table, cnt = NCHARS; cnt--; ++p)
- *p = !*p;
- }
- static void
- usage(void)
- {
- fprintf(stderr,
- "usage: tr [-Ccs] string1 string2\n"
- " tr [-Cc] -d string1\n"
- " tr [-Cc] -s string1\n"
- " tr [-Cc] -ds string1 string2\n");
- exit(1);
- }