tr.c revision 1.9
1 /* $NetBSD: tr.c,v 1.9 2011/09/06 18:33:46 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 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 <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)tr.c 8.2 (Berkeley) 5/4/95"; 41 #endif 42 __RCSID("$NetBSD: tr.c,v 1.9 2011/09/06 18:33:46 joerg Exp $"); 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <err.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <unistd.h> 52 53 #include "extern.h" 54 55 static int string1[NCHARS] = { 56 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */ 57 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 58 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 59 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 60 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 61 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 62 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 63 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 64 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 65 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 66 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 67 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 68 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 69 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 70 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 71 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 72 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 73 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 74 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 75 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 76 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 77 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 78 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 79 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 80 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 81 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 82 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 83 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 84 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 85 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 86 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 87 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 88 }, string2[NCHARS]; 89 90 STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 91 STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 92 93 static void setup(int *, char *, STR *, int); 94 __dead static void usage(void); 95 96 int 97 main(int argc, char **argv) 98 { 99 int ch, cnt, lastch, *p; 100 int cflag, dflag, sflag, isstring2; 101 102 cflag = dflag = sflag = 0; 103 while ((ch = getopt(argc, argv, "cds")) != -1) 104 switch((char)ch) { 105 case 'c': 106 cflag = 1; 107 break; 108 case 'd': 109 dflag = 1; 110 break; 111 case 's': 112 sflag = 1; 113 break; 114 case '?': 115 default: 116 usage(); 117 } 118 argc -= optind; 119 argv += optind; 120 121 switch(argc) { 122 case 0: 123 default: 124 usage(); 125 /* NOTREACHED */ 126 case 1: 127 isstring2 = 0; 128 break; 129 case 2: 130 isstring2 = 1; 131 break; 132 } 133 134 /* 135 * tr -ds [-c] string1 string2 136 * Delete all characters (or complemented characters) in string1. 137 * Squeeze all characters in string2. 138 */ 139 if (dflag && sflag) { 140 if (!isstring2) 141 usage(); 142 143 setup(string1, argv[0], &s1, cflag); 144 setup(string2, argv[1], &s2, 0); 145 146 for (lastch = OOBCH; (ch = getchar()) != EOF;) 147 if (!string1[ch] && (!string2[ch] || lastch != ch)) { 148 lastch = ch; 149 (void)putchar(ch); 150 } 151 exit(0); 152 } 153 154 /* 155 * tr -d [-c] string1 156 * Delete all characters (or complemented characters) in string1. 157 */ 158 if (dflag) { 159 if (isstring2) 160 usage(); 161 162 setup(string1, argv[0], &s1, cflag); 163 164 while ((ch = getchar()) != EOF) 165 if (!string1[ch]) 166 (void)putchar(ch); 167 exit(0); 168 } 169 170 /* 171 * tr -s [-c] string1 172 * Squeeze all characters (or complemented characters) in string1. 173 */ 174 if (sflag && !isstring2) { 175 setup(string1, argv[0], &s1, cflag); 176 177 for (lastch = OOBCH; (ch = getchar()) != EOF;) 178 if (!string1[ch] || lastch != ch) { 179 lastch = ch; 180 (void)putchar(ch); 181 } 182 exit(0); 183 } 184 185 /* 186 * tr [-cs] string1 string2 187 * Replace all characters (or complemented characters) in string1 with 188 * the character in the same position in string2. If the -s option is 189 * specified, squeeze all the characters in string2. 190 */ 191 if (!isstring2) 192 usage(); 193 194 s1.str = argv[0]; 195 s2.str = argv[1]; 196 197 if (cflag) 198 for (cnt = NCHARS, p = string1; cnt--;) 199 *p++ = OOBCH; 200 201 if (!next(&s2)) 202 errx(1, "empty string2"); 203 204 /* If string2 runs out of characters, use the last one specified. */ 205 if (sflag) 206 while (next(&s1)) { 207 string1[s1.lastch] = ch = s2.lastch; 208 string2[ch] = 1; 209 (void)next(&s2); 210 } 211 else 212 while (next(&s1)) { 213 string1[s1.lastch] = ch = s2.lastch; 214 (void)next(&s2); 215 } 216 217 if (cflag) 218 for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt) 219 *p = *p == OOBCH ? ch : cnt; 220 221 if (sflag) 222 for (lastch = OOBCH; (ch = getchar()) != EOF;) { 223 ch = string1[ch]; 224 if (!string2[ch] || lastch != ch) { 225 lastch = ch; 226 (void)putchar(ch); 227 } 228 } 229 else 230 while ((ch = getchar()) != EOF) 231 (void)putchar(string1[ch]); 232 exit (0); 233 } 234 235 static void 236 setup(int *string, char *arg, STR *str, int cflag) 237 { 238 int cnt, *p; 239 240 str->str = arg; 241 memset(string, 0, NCHARS * sizeof(int)); 242 while (next(str)) 243 string[str->lastch] = 1; 244 if (cflag) 245 for (p = string, cnt = NCHARS; cnt--; ++p) 246 *p = !*p; 247 } 248 249 static void 250 usage(void) 251 { 252 (void)fprintf(stderr, "usage: tr [-cs] string1 string2\n"); 253 (void)fprintf(stderr, " tr [-c] -d string1\n"); 254 (void)fprintf(stderr, " tr [-c] -s string1\n"); 255 (void)fprintf(stderr, " tr [-c] -ds string1 string2\n"); 256 exit(1); 257 } 258
Indexes created Mon Sep 29 21:09:56 GMT 2025