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 8.1 (Berkeley) 06/06/93"; 16 #endif /* not lint */ 17 18 #include <sys/types.h> 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <string.h> 22 #include "extern.h" 23 24 static int string1[NCHARS] = { 25 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */ 26 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 27 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 28 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 29 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 30 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 31 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 32 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 33 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 34 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 35 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 36 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 37 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 38 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 39 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 40 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 41 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 42 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 43 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 44 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 45 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 46 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 47 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 48 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 49 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 50 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 51 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 52 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 53 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 54 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 55 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 56 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 57 }, string2[NCHARS]; 58 59 STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 60 STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL }; 61 62 static void setup __P((int *, char *, STR *, int)); 63 static void usage __P((void)); 64 65 int 66 main(argc, argv) 67 int argc; 68 char **argv; 69 { 70 register int ch, cnt, lastch, *p; 71 int cflag, dflag, sflag, isstring2; 72 73 cflag = dflag = sflag = 0; 74 while ((ch = getopt(argc, argv, "cds")) != EOF) 75 switch((char)ch) { 76 case 'c': 77 cflag = 1; 78 break; 79 case 'd': 80 dflag = 1; 81 break; 82 case 's': 83 sflag = 1; 84 break; 85 case '?': 86 default: 87 usage(); 88 } 89 argc -= optind; 90 argv += optind; 91 92 switch(argc) { 93 case 0: 94 default: 95 usage(); 96 /* NOTREACHED */ 97 case 1: 98 isstring2 = 0; 99 break; 100 case 2: 101 isstring2 = 1; 102 break; 103 } 104 105 /* 106 * tr -ds [-c] string1 string2 107 * Delete all characters (or complemented characters) in string1. 108 * Squeeze all characters in string2. 109 */ 110 if (dflag && sflag) { 111 if (!isstring2) 112 usage(); 113 114 setup(string1, argv[0], &s1, cflag); 115 setup(string2, argv[1], &s2, 0); 116 117 for (lastch = OOBCH; (ch = getchar()) != EOF;) 118 if (!string1[ch] && (!string2[ch] || lastch != ch)) { 119 lastch = ch; 120 (void)putchar(ch); 121 } 122 exit(0); 123 } 124 125 /* 126 * tr -d [-c] string1 127 * Delete all characters (or complemented characters) in string1. 128 */ 129 if (dflag) { 130 if (isstring2) 131 usage(); 132 133 setup(string1, argv[0], &s1, cflag); 134 135 while ((ch = getchar()) != EOF) 136 if (!string1[ch]) 137 (void)putchar(ch); 138 exit(0); 139 } 140 141 /* 142 * tr -s [-c] string1 143 * Squeeze all characters (or complemented characters) in string1. 144 */ 145 if (sflag && !isstring2) { 146 setup(string1, argv[0], &s1, cflag); 147 148 for (lastch = OOBCH; (ch = getchar()) != EOF;) 149 if (!string1[ch] || lastch != ch) { 150 lastch = ch; 151 (void)putchar(ch); 152 } 153 exit(0); 154 } 155 156 /* 157 * tr [-cs] string1 string2 158 * Replace all characters (or complemented characters) in string1 with 159 * the character in the same position in string2. If the -s option is 160 * specified, squeeze all the characters in string2. 161 */ 162 if (!isstring2) 163 usage(); 164 165 s1.str = argv[0]; 166 s2.str = argv[1]; 167 168 if (cflag) 169 for (cnt = NCHARS, p = string1; cnt--;) 170 *p++ = OOBCH; 171 172 if (!next(&s2)) 173 err("empty string2"); 174 175 /* If string2 runs out of characters, use the last one specified. */ 176 if (sflag) 177 while (next(&s1)) { 178 string1[s1.lastch] = ch = s2.lastch; 179 string2[ch] = 1; 180 (void)next(&s2); 181 } 182 else 183 while (next(&s1)) { 184 string1[s1.lastch] = ch = s2.lastch; 185 (void)next(&s2); 186 } 187 188 if (cflag) 189 for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt) 190 *p = *p == OOBCH ? ch : cnt; 191 192 if (sflag) 193 for (lastch = OOBCH; (ch = getchar()) != EOF;) { 194 ch = string1[ch]; 195 if (!string2[ch] || lastch != ch) { 196 lastch = ch; 197 (void)putchar(ch); 198 } 199 } 200 else 201 while ((ch = getchar()) != EOF) 202 (void)putchar(string1[ch]); 203 exit (0); 204 } 205 206 static void 207 setup(string, arg, str, cflag) 208 int *string; 209 char *arg; 210 STR *str; 211 int cflag; 212 { 213 register int cnt, *p; 214 215 str->str = arg; 216 bzero(string, NCHARS * sizeof(int)); 217 while (next(str)) 218 string[str->lastch] = 1; 219 if (cflag) 220 for (p = string, cnt = NCHARS; cnt--; ++p) 221 *p = !*p; 222 } 223 224 static void 225 usage() 226 { 227 (void)fprintf(stderr, "usage: tr [-cs] string1 string2\n"); 228 (void)fprintf(stderr, " tr [-c] -d string1\n"); 229 (void)fprintf(stderr, " tr [-c] -s string1\n"); 230 (void)fprintf(stderr, " tr [-c] -ds string1 string2\n"); 231 exit(1); 232 } 233 234 #if __STDC__ 235 #include <stdarg.h> 236 #else 237 #include <varargs.h> 238 #endif 239 240 void 241 #if __STDC__ 242 err(const char *fmt, ...) 243 #else 244 err(fmt, va_alist) 245 char *fmt; 246 va_dcl 247 #endif 248 { 249 va_list ap; 250 #if __STDC__ 251 va_start(ap, fmt); 252 #else 253 va_start(ap); 254 #endif 255 (void)fprintf(stderr, "tr: "); 256 (void)vfprintf(stderr, fmt, ap); 257 va_end(ap); 258 (void)fprintf(stderr, "\n"); 259 exit(1); 260 /* NOTREACHED */ 261 } 262