1 /* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)tr.c 8.2 (Berkeley) 5/4/95"; 43 #endif 44 static const char rcsid[] = 45 "$Id$"; 46 #endif /* not lint */ 47 48 #include <locale.h> 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 static void setup __P((int *, char *, STR *, int)); 98 static void usage __P((void)); 99 100 int 101 main(argc, argv) 102 int argc; 103 char **argv; 104 { 105 register int ch, cnt, lastch, *p; 106 int cflag, dflag, sflag, isstring2; 107 108 (void) setlocale(LC_CTYPE, ""); 109 110 cflag = dflag = sflag = 0; 111 while ((ch = getopt(argc, argv, "cds")) != -1) 112 switch((char)ch) { 113 case 'c': 114 cflag = 1; 115 break; 116 case 'd': 117 dflag = 1; 118 break; 119 case 's': 120 sflag = 1; 121 break; 122 case '?': 123 default: 124 usage(); 125 } 126 argc -= optind; 127 argv += optind; 128 129 switch(argc) { 130 case 0: 131 default: 132 usage(); 133 /* NOTREACHED */ 134 case 1: 135 isstring2 = 0; 136 break; 137 case 2: 138 isstring2 = 1; 139 break; 140 } 141 142 /* 143 * tr -ds [-c] string1 string2 144 * Delete all characters (or complemented characters) in string1. 145 * Squeeze all characters in string2. 146 */ 147 if (dflag && sflag) { 148 if (!isstring2) 149 usage(); 150 151 setup(string1, argv[0], &s1, cflag); 152 setup(string2, argv[1], &s2, 0); 153 154 for (lastch = OOBCH; (ch = getchar()) != EOF;) 155 if (!string1[ch] && (!string2[ch] || lastch != ch)) { 156 lastch = ch; 157 (void)putchar(ch); 158 } 159 exit(0); 160 } 161 162 /* 163 * tr -d [-c] string1 164 * Delete all characters (or complemented characters) in string1. 165 */ 166 if (dflag) { 167 if (isstring2) 168 usage(); 169 170 setup(string1, argv[0], &s1, cflag); 171 172 while ((ch = getchar()) != EOF) 173 if (!string1[ch]) 174 (void)putchar(ch); 175 exit(0); 176 } 177 178 /* 179 * tr -s [-c] string1 180 * Squeeze all characters (or complemented characters) in string1. 181 */ 182 if (sflag && !isstring2) { 183 setup(string1, argv[0], &s1, cflag); 184 185 for (lastch = OOBCH; (ch = getchar()) != EOF;) 186 if (!string1[ch] || lastch != ch) { 187 lastch = ch; 188 (void)putchar(ch); 189 } 190 exit(0); 191 } 192 193 /* 194 * tr [-cs] string1 string2 195 * Replace all characters (or complemented characters) in string1 with 196 * the character in the same position in string2. If the -s option is 197 * specified, squeeze all the characters in string2. 198 */ 199 if (!isstring2) 200 usage(); 201 202 s1.str = argv[0]; 203 s2.str = argv[1]; 204 205 if (cflag) 206 for (cnt = NCHARS, p = string1; cnt--;) 207 *p++ = OOBCH; 208 209 if (!next(&s2)) 210 errx(1, "empty string2"); 211 212 /* If string2 runs out of characters, use the last one specified. */ 213 if (sflag) 214 while (next(&s1)) { 215 string1[s1.lastch] = ch = s2.lastch; 216 string2[ch] = 1; 217 (void)next(&s2); 218 } 219 else 220 while (next(&s1)) { 221 string1[s1.lastch] = ch = s2.lastch; 222 (void)next(&s2); 223 } 224 225 if (cflag) 226 for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt) 227 *p = *p == OOBCH ? ch : cnt; 228 229 if (sflag) 230 for (lastch = OOBCH; (ch = getchar()) != EOF;) { 231 ch = string1[ch]; 232 if (!string2[ch] || lastch != ch) { 233 lastch = ch; 234 (void)putchar(ch); 235 } 236 } 237 else 238 while ((ch = getchar()) != EOF) 239 (void)putchar(string1[ch]); 240 exit (0); 241 } 242 243 static void 244 setup(string, arg, str, cflag) 245 int *string; 246 char *arg; 247 STR *str; 248 int cflag; 249 { 250 register int cnt, *p; 251 252 str->str = arg; 253 bzero(string, NCHARS * sizeof(int)); 254 while (next(str)) 255 string[str->lastch] = 1; 256 if (cflag) 257 for (p = string, cnt = NCHARS; cnt--; ++p) 258 *p = !*p; 259 } 260 261 static void 262 usage() 263 { 264 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 265 "usage: tr [-cs] string1 string2", 266 " tr [-c] -d string1", 267 " tr [-c] -s string1", 268 " tr [-c] -ds string1 string2"); 269 exit(1); 270 } 271