1 /* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1988, 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)tr.c 8.2 (Berkeley) 05/04/95"; 16 #endif /* not lint */ 17 18 #include <sys/types.h> 19 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <string.h> 23 #include <unistd.h> 24 25 #include "extern.h" 26 27 static int string1[NCHARS] = { 28 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */ 29 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 30 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 31 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 32 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 33 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 34 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 35 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 36 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 37 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 38 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 39 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 40 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 41 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 42 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 43 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 44 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 45 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 46 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 47 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 48 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 49 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 50 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 51 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 52 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 53 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 54 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 55 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 56 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 57 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 58 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 59 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 60 }, string2[NCHARS]; 61 62 STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 63 STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 64 65 static void setup __P((int *, char *, STR *, int)); 66 static void usage __P((void)); 67 68 int 69 main(argc, argv) 70 int argc; 71 char **argv; 72 { 73 register int ch, cnt, lastch, *p; 74 int cflag, dflag, sflag, isstring2; 75 76 cflag = dflag = sflag = 0; 77 while ((ch = getopt(argc, argv, "cds")) != EOF) 78 switch((char)ch) { 79 case 'c': 80 cflag = 1; 81 break; 82 case 'd': 83 dflag = 1; 84 break; 85 case 's': 86 sflag = 1; 87 break; 88 case '?': 89 default: 90 usage(); 91 } 92 argc -= optind; 93 argv += optind; 94 95 switch(argc) { 96 case 0: 97 default: 98 usage(); 99 /* NOTREACHED */ 100 case 1: 101 isstring2 = 0; 102 break; 103 case 2: 104 isstring2 = 1; 105 break; 106 } 107 108 /* 109 * tr -ds [-c] string1 string2 110 * Delete all characters (or complemented characters) in string1. 111 * Squeeze all characters in string2. 112 */ 113 if (dflag && sflag) { 114 if (!isstring2) 115 usage(); 116 117 setup(string1, argv[0], &s1, cflag); 118 setup(string2, argv[1], &s2, 0); 119 120 for (lastch = OOBCH; (ch = getchar()) != EOF;) 121 if (!string1[ch] && (!string2[ch] || lastch != ch)) { 122 lastch = ch; 123 (void)putchar(ch); 124 } 125 exit(0); 126 } 127 128 /* 129 * tr -d [-c] string1 130 * Delete all characters (or complemented characters) in string1. 131 */ 132 if (dflag) { 133 if (isstring2) 134 usage(); 135 136 setup(string1, argv[0], &s1, cflag); 137 138 while ((ch = getchar()) != EOF) 139 if (!string1[ch]) 140 (void)putchar(ch); 141 exit(0); 142 } 143 144 /* 145 * tr -s [-c] string1 146 * Squeeze all characters (or complemented characters) in string1. 147 */ 148 if (sflag && !isstring2) { 149 setup(string1, argv[0], &s1, cflag); 150 151 for (lastch = OOBCH; (ch = getchar()) != EOF;) 152 if (!string1[ch] || lastch != ch) { 153 lastch = ch; 154 (void)putchar(ch); 155 } 156 exit(0); 157 } 158 159 /* 160 * tr [-cs] string1 string2 161 * Replace all characters (or complemented characters) in string1 with 162 * the character in the same position in string2. If the -s option is 163 * specified, squeeze all the characters in string2. 164 */ 165 if (!isstring2) 166 usage(); 167 168 s1.str = argv[0]; 169 s2.str = argv[1]; 170 171 if (cflag) 172 for (cnt = NCHARS, p = string1; cnt--;) 173 *p++ = OOBCH; 174 175 if (!next(&s2)) 176 err("empty string2"); 177 178 /* If string2 runs out of characters, use the last one specified. */ 179 if (sflag) 180 while (next(&s1)) { 181 string1[s1.lastch] = ch = s2.lastch; 182 string2[ch] = 1; 183 (void)next(&s2); 184 } 185 else 186 while (next(&s1)) { 187 string1[s1.lastch] = ch = s2.lastch; 188 (void)next(&s2); 189 } 190 191 if (cflag) 192 for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt) 193 *p = *p == OOBCH ? ch : cnt; 194 195 if (sflag) 196 for (lastch = OOBCH; (ch = getchar()) != EOF;) { 197 ch = string1[ch]; 198 if (!string2[ch] || lastch != ch) { 199 lastch = ch; 200 (void)putchar(ch); 201 } 202 } 203 else 204 while ((ch = getchar()) != EOF) 205 (void)putchar(string1[ch]); 206 exit (0); 207 } 208 209 static void 210 setup(string, arg, str, cflag) 211 int *string; 212 char *arg; 213 STR *str; 214 int cflag; 215 { 216 register int cnt, *p; 217 218 str->str = arg; 219 bzero(string, NCHARS * sizeof(int)); 220 while (next(str)) 221 string[str->lastch] = 1; 222 if (cflag) 223 for (p = string, cnt = NCHARS; cnt--; ++p) 224 *p = !*p; 225 } 226 227 static void 228 usage() 229 { 230 (void)fprintf(stderr, "usage: tr [-cs] string1 string2\n"); 231 (void)fprintf(stderr, " tr [-c] -d string1\n"); 232 (void)fprintf(stderr, " tr [-c] -s string1\n"); 233 (void)fprintf(stderr, " tr [-c] -ds string1 string2\n"); 234 exit(1); 235 } 236 237 #if __STDC__ 238 #include <stdarg.h> 239 #else 240 #include <varargs.h> 241 #endif 242 243 void 244 #if __STDC__ 245 err(const char *fmt, ...) 246 #else 247 err(fmt, va_alist) 248 char *fmt; 249 va_dcl 250 #endif 251 { 252 va_list ap; 253 #if __STDC__ 254 va_start(ap, fmt); 255 #else 256 va_start(ap); 257 #endif 258 (void)fprintf(stderr, "tr: "); 259 (void)vfprintf(stderr, fmt, ap); 260 va_end(ap); 261 (void)fprintf(stderr, "\n"); 262 exit(1); 263 /* NOTREACHED */ 264 } 265