tr.c revision 1.6
1 /* $NetBSD: tr.c,v 1.6 1997/10/20 00:56:06 lukem 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)tr.c 8.2 (Berkeley) 5/4/95"; 45 #endif 46 __RCSID("$NetBSD: tr.c,v 1.6 1997/10/20 00:56:06 lukem Exp $"); 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 51 #include <err.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 57 #include "extern.h" 58 59 static int string1[NCHARS] = { 60 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */ 61 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 62 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 63 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 64 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 65 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 66 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 67 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 68 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 69 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 70 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 71 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 72 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 73 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 74 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 75 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 76 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 77 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 78 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 79 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 80 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 81 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 82 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 83 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 84 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 85 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 86 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 87 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 88 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 89 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 90 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 91 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 92 }, string2[NCHARS]; 93 94 STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 95 STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 96 97 int main __P((int, char **)); 98 static void setup __P((int *, char *, STR *, int)); 99 static void usage __P((void)); 100 101 int 102 main(argc, argv) 103 int argc; 104 char **argv; 105 { 106 int ch, cnt, lastch, *p; 107 int cflag, dflag, sflag, isstring2; 108 109 cflag = dflag = sflag = 0; 110 while ((ch = getopt(argc, argv, "cds")) != -1) 111 switch((char)ch) { 112 case 'c': 113 cflag = 1; 114 break; 115 case 'd': 116 dflag = 1; 117 break; 118 case 's': 119 sflag = 1; 120 break; 121 case '?': 122 default: 123 usage(); 124 } 125 argc -= optind; 126 argv += optind; 127 128 switch(argc) { 129 case 0: 130 default: 131 usage(); 132 /* NOTREACHED */ 133 case 1: 134 isstring2 = 0; 135 break; 136 case 2: 137 isstring2 = 1; 138 break; 139 } 140 141 /* 142 * tr -ds [-c] string1 string2 143 * Delete all characters (or complemented characters) in string1. 144 * Squeeze all characters in string2. 145 */ 146 if (dflag && sflag) { 147 if (!isstring2) 148 usage(); 149 150 setup(string1, argv[0], &s1, cflag); 151 setup(string2, argv[1], &s2, 0); 152 153 for (lastch = OOBCH; (ch = getchar()) != EOF;) 154 if (!string1[ch] && (!string2[ch] || lastch != ch)) { 155 lastch = ch; 156 (void)putchar(ch); 157 } 158 exit(0); 159 } 160 161 /* 162 * tr -d [-c] string1 163 * Delete all characters (or complemented characters) in string1. 164 */ 165 if (dflag) { 166 if (isstring2) 167 usage(); 168 169 setup(string1, argv[0], &s1, cflag); 170 171 while ((ch = getchar()) != EOF) 172 if (!string1[ch]) 173 (void)putchar(ch); 174 exit(0); 175 } 176 177 /* 178 * tr -s [-c] string1 179 * Squeeze all characters (or complemented characters) in string1. 180 */ 181 if (sflag && !isstring2) { 182 setup(string1, argv[0], &s1, cflag); 183 184 for (lastch = OOBCH; (ch = getchar()) != EOF;) 185 if (!string1[ch] || lastch != ch) { 186 lastch = ch; 187 (void)putchar(ch); 188 } 189 exit(0); 190 } 191 192 /* 193 * tr [-cs] string1 string2 194 * Replace all characters (or complemented characters) in string1 with 195 * the character in the same position in string2. If the -s option is 196 * specified, squeeze all the characters in string2. 197 */ 198 if (!isstring2) 199 usage(); 200 201 s1.str = argv[0]; 202 s2.str = argv[1]; 203 204 if (cflag) 205 for (cnt = NCHARS, p = string1; cnt--;) 206 *p++ = OOBCH; 207 208 if (!next(&s2)) 209 errx(1, "empty string2"); 210 211 /* If string2 runs out of characters, use the last one specified. */ 212 if (sflag) 213 while (next(&s1)) { 214 string1[s1.lastch] = ch = s2.lastch; 215 string2[ch] = 1; 216 (void)next(&s2); 217 } 218 else 219 while (next(&s1)) { 220 string1[s1.lastch] = ch = s2.lastch; 221 (void)next(&s2); 222 } 223 224 if (cflag) 225 for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt) 226 *p = *p == OOBCH ? ch : cnt; 227 228 if (sflag) 229 for (lastch = OOBCH; (ch = getchar()) != EOF;) { 230 ch = string1[ch]; 231 if (!string2[ch] || lastch != ch) { 232 lastch = ch; 233 (void)putchar(ch); 234 } 235 } 236 else 237 while ((ch = getchar()) != EOF) 238 (void)putchar(string1[ch]); 239 exit (0); 240 } 241 242 static void 243 setup(string, arg, str, cflag) 244 int *string; 245 char *arg; 246 STR *str; 247 int cflag; 248 { 249 int cnt, *p; 250 251 str->str = arg; 252 memset(string, 0, NCHARS * sizeof(int)); 253 while (next(str)) 254 string[str->lastch] = 1; 255 if (cflag) 256 for (p = string, cnt = NCHARS; cnt--; ++p) 257 *p = !*p; 258 } 259 260 static void 261 usage() 262 { 263 (void)fprintf(stderr, "usage: tr [-cs] string1 string2\n"); 264 (void)fprintf(stderr, " tr [-c] -d string1\n"); 265 (void)fprintf(stderr, " tr [-c] -s string1\n"); 266 (void)fprintf(stderr, " tr [-c] -ds string1 string2\n"); 267 exit(1); 268 } 269
Indexes created Mon Sep 29 03:10:08 GMT 2025