GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/tr/tr.c Lines: 37 76 48.7 %
Date: 2017-11-13 Branches: 36 104 34.6 %

Line Branch Exec Source
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/*	$OpenBSD: tr.c,v 1.19 2015/10/09 01:37:09 deraadt Exp $	*/
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/*	$NetBSD: tr.c,v 1.5 1995/08/31 22:13:48 jtc Exp $	*/
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/*
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 * Copyright (c) 1988, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#include "extern.h"
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static int string1[NCHARS] = {
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	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,		/* ASCII */
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	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
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	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
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	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
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	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
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	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
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	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
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	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
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	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
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	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
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	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
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	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
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	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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	0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
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	0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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	0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
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	0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
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	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
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	0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
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	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
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	0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
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	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
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	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
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	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
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	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
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	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
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}, string2[NCHARS];
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STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL };
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STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL };
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static void setup(int *, char *, STR *, int);
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static void usage(void);
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int
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main(int argc, char *argv[])
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{
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	int ch, cnt, lastch, *p;
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	int cflag, dflag, sflag, isstring2;
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	if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	cflag = dflag = sflag = 0;
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	while ((ch = getopt(argc, argv, "Ccds")) != -1)
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		switch(ch) {
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		case 'C':
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		case 'c':
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			cflag = 1;
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			break;
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		case 'd':
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			dflag = 1;
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			break;
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		case 's':
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			sflag = 1;
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			break;
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		case '?':
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		default:
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			usage();
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		}
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	argc -= optind;
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	argv += optind;
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	switch(argc) {
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	case 0:
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	default:
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		usage();
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		/* NOTREACHED */
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	case 1:
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		isstring2 = 0;
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		break;
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	case 2:
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		isstring2 = 1;
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		break;
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	}
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	/*
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	 * tr -ds [-Cc] string1 string2
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	 * Delete all characters (or complemented characters) in string1.
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	 * Squeeze all characters in string2.
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	 */
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	if (dflag && sflag) {
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		if (!isstring2)
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			usage();
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		setup(string1, argv[0], &s1, cflag);
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		setup(string2, argv[1], &s2, 0);
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		for (lastch = OOBCH; (ch = getchar()) != EOF;)
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			if (!string1[ch] && (!string2[ch] || lastch != ch)) {
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				lastch = ch;
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				(void)putchar(ch);
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			}
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		exit(0);
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	}
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	/*
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	 * tr -d [-Cc] string1
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	 * Delete all characters (or complemented characters) in string1.
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	 */
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	if (dflag) {
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		if (isstring2)
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			usage();
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		setup(string1, argv[0], &s1, cflag);
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		while ((ch = getchar()) != EOF)
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			if (!string1[ch])
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				(void)putchar(ch);
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		exit(0);
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	}
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	/*
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	 * tr -s [-Cc] string1
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	 * Squeeze all characters (or complemented characters) in string1.
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	 */
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	if (sflag && !isstring2) {
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		setup(string1, argv[0], &s1, cflag);
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		for (lastch = OOBCH; (ch = getchar()) != EOF;)
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			if (!string1[ch] || lastch != ch) {
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				lastch = ch;
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				(void)putchar(ch);
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			}
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		exit(0);
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	}
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	/*
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	 * tr [-Ccs] string1 string2
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	 * Replace all characters (or complemented characters) in string1 with
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	 * the character in the same position in string2.  If the -s option is
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	 * specified, squeeze all the characters in string2.
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	 */
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	if (!isstring2)
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		usage();
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	s1.str = (unsigned char *)argv[0];
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	s2.str = (unsigned char *)argv[1];
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	if (cflag)
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		for (cnt = NCHARS, p = string1; cnt--;)
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			*p++ = OOBCH;
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	if (!next(&s2))
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		errx(1, "empty string2");
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	/* If string2 runs out of characters, use the last one specified. */
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	ch = s2.lastch;
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	if (sflag)
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		while (next(&s1)) {
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			string1[s1.lastch] = ch = s2.lastch;
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			string2[ch] = 1;
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			(void)next(&s2);
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		}
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	else
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		while (next(&s1)) {
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			string1[s1.lastch] = ch = s2.lastch;
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			(void)next(&s2);
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		}
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	if (cflag)
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		for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt)
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			*p = *p == OOBCH ? ch : cnt;
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	if (sflag)
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		for (lastch = OOBCH; (ch = getchar()) != EOF;) {
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			ch = string1[ch];
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			if (!string2[ch] || lastch != ch) {
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				lastch = ch;
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				(void)putchar(ch);
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			}
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		}
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	else
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		while ((ch = getchar()) != EOF)
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			(void)putchar(string1[ch]);
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	exit (0);
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}
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static void
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setup(int *string, char *arg, STR *str, int cflag)
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{
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	int cnt, *p;
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	str->str = (unsigned char *)arg;
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	bzero(string, NCHARS * sizeof(int));
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	while (next(str))
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		string[str->lastch] = 1;
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	if (cflag)
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		for (p = string, cnt = NCHARS; cnt--; ++p)
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			*p = !*p;
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}
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static void
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usage(void)
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{
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	fprintf(stderr,
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	    "usage: tr [-Ccs] string1 string2\n"
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	    "       tr [-Cc] -d string1\n"
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	    "       tr [-Cc] -s string1\n"
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	    "       tr [-Cc] -ds string1 string2\n");
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	exit(1);
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}