Annotation of src/usr.bin/tr/tr.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: tr.c,v 1.5 1995/08/31 22:13:48 jtc 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: #ifndef lint
! 37: static char copyright[] =
! 38: "@(#) 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: static char rcsid[] = "$NetBSD: tr.c,v 1.5 1995/08/31 22:13:48 jtc Exp $";
! 47: #endif /* not lint */
! 48:
! 49: #include <sys/types.h>
! 50:
! 51: #include <stdio.h>
! 52: #include <stdlib.h>
! 53: #include <string.h>
! 54: #include <unistd.h>
! 55:
! 56: #include "extern.h"
! 57:
! 58: static int string1[NCHARS] = {
! 59: 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */
! 60: 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
! 61: 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
! 62: 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
! 63: 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
! 64: 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
! 65: 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
! 66: 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
! 67: 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
! 68: 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
! 69: 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
! 70: 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
! 71: 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
! 72: 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
! 73: 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
! 74: 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
! 75: 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
! 76: 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
! 77: 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
! 78: 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
! 79: 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
! 80: 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
! 81: 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
! 82: 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
! 83: 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
! 84: 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
! 85: 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
! 86: 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
! 87: 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
! 88: 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
! 89: 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
! 90: 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
! 91: }, string2[NCHARS];
! 92:
! 93: STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL };
! 94: STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL };
! 95:
! 96: static void setup __P((int *, char *, STR *, int));
! 97: static void usage __P((void));
! 98:
! 99: int
! 100: main(argc, argv)
! 101: int argc;
! 102: char **argv;
! 103: {
! 104: register int ch, cnt, lastch, *p;
! 105: int cflag, dflag, sflag, isstring2;
! 106:
! 107: cflag = dflag = sflag = 0;
! 108: while ((ch = getopt(argc, argv, "cds")) != EOF)
! 109: switch((char)ch) {
! 110: case 'c':
! 111: cflag = 1;
! 112: break;
! 113: case 'd':
! 114: dflag = 1;
! 115: break;
! 116: case 's':
! 117: sflag = 1;
! 118: break;
! 119: case '?':
! 120: default:
! 121: usage();
! 122: }
! 123: argc -= optind;
! 124: argv += optind;
! 125:
! 126: switch(argc) {
! 127: case 0:
! 128: default:
! 129: usage();
! 130: /* NOTREACHED */
! 131: case 1:
! 132: isstring2 = 0;
! 133: break;
! 134: case 2:
! 135: isstring2 = 1;
! 136: break;
! 137: }
! 138:
! 139: /*
! 140: * tr -ds [-c] string1 string2
! 141: * Delete all characters (or complemented characters) in string1.
! 142: * Squeeze all characters in string2.
! 143: */
! 144: if (dflag && sflag) {
! 145: if (!isstring2)
! 146: usage();
! 147:
! 148: setup(string1, argv[0], &s1, cflag);
! 149: setup(string2, argv[1], &s2, 0);
! 150:
! 151: for (lastch = OOBCH; (ch = getchar()) != EOF;)
! 152: if (!string1[ch] && (!string2[ch] || lastch != ch)) {
! 153: lastch = ch;
! 154: (void)putchar(ch);
! 155: }
! 156: exit(0);
! 157: }
! 158:
! 159: /*
! 160: * tr -d [-c] string1
! 161: * Delete all characters (or complemented characters) in string1.
! 162: */
! 163: if (dflag) {
! 164: if (isstring2)
! 165: usage();
! 166:
! 167: setup(string1, argv[0], &s1, cflag);
! 168:
! 169: while ((ch = getchar()) != EOF)
! 170: if (!string1[ch])
! 171: (void)putchar(ch);
! 172: exit(0);
! 173: }
! 174:
! 175: /*
! 176: * tr -s [-c] string1
! 177: * Squeeze all characters (or complemented characters) in string1.
! 178: */
! 179: if (sflag && !isstring2) {
! 180: setup(string1, argv[0], &s1, cflag);
! 181:
! 182: for (lastch = OOBCH; (ch = getchar()) != EOF;)
! 183: if (!string1[ch] || lastch != ch) {
! 184: lastch = ch;
! 185: (void)putchar(ch);
! 186: }
! 187: exit(0);
! 188: }
! 189:
! 190: /*
! 191: * tr [-cs] string1 string2
! 192: * Replace all characters (or complemented characters) in string1 with
! 193: * the character in the same position in string2. If the -s option is
! 194: * specified, squeeze all the characters in string2.
! 195: */
! 196: if (!isstring2)
! 197: usage();
! 198:
! 199: s1.str = argv[0];
! 200: s2.str = argv[1];
! 201:
! 202: if (cflag)
! 203: for (cnt = NCHARS, p = string1; cnt--;)
! 204: *p++ = OOBCH;
! 205:
! 206: if (!next(&s2))
! 207: err("empty string2");
! 208:
! 209: /* If string2 runs out of characters, use the last one specified. */
! 210: if (sflag)
! 211: while (next(&s1)) {
! 212: string1[s1.lastch] = ch = s2.lastch;
! 213: string2[ch] = 1;
! 214: (void)next(&s2);
! 215: }
! 216: else
! 217: while (next(&s1)) {
! 218: string1[s1.lastch] = ch = s2.lastch;
! 219: (void)next(&s2);
! 220: }
! 221:
! 222: if (cflag)
! 223: for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt)
! 224: *p = *p == OOBCH ? ch : cnt;
! 225:
! 226: if (sflag)
! 227: for (lastch = OOBCH; (ch = getchar()) != EOF;) {
! 228: ch = string1[ch];
! 229: if (!string2[ch] || lastch != ch) {
! 230: lastch = ch;
! 231: (void)putchar(ch);
! 232: }
! 233: }
! 234: else
! 235: while ((ch = getchar()) != EOF)
! 236: (void)putchar(string1[ch]);
! 237: exit (0);
! 238: }
! 239:
! 240: static void
! 241: setup(string, arg, str, cflag)
! 242: int *string;
! 243: char *arg;
! 244: STR *str;
! 245: int cflag;
! 246: {
! 247: register int cnt, *p;
! 248:
! 249: str->str = arg;
! 250: bzero(string, NCHARS * sizeof(int));
! 251: while (next(str))
! 252: string[str->lastch] = 1;
! 253: if (cflag)
! 254: for (p = string, cnt = NCHARS; cnt--; ++p)
! 255: *p = !*p;
! 256: }
! 257:
! 258: static void
! 259: usage()
! 260: {
! 261: (void)fprintf(stderr, "usage: tr [-cs] string1 string2\n");
! 262: (void)fprintf(stderr, " tr [-c] -d string1\n");
! 263: (void)fprintf(stderr, " tr [-c] -s string1\n");
! 264: (void)fprintf(stderr, " tr [-c] -ds string1 string2\n");
! 265: exit(1);
! 266: }
! 267:
! 268: #if __STDC__
! 269: #include <stdarg.h>
! 270: #else
! 271: #include <varargs.h>
! 272: #endif
! 273:
! 274: void
! 275: #if __STDC__
! 276: err(const char *fmt, ...)
! 277: #else
! 278: err(fmt, va_alist)
! 279: char *fmt;
! 280: va_dcl
! 281: #endif
! 282: {
! 283: va_list ap;
! 284: #if __STDC__
! 285: va_start(ap, fmt);
! 286: #else
! 287: va_start(ap);
! 288: #endif
! 289: (void)fprintf(stderr, "tr: ");
! 290: (void)vfprintf(stderr, fmt, ap);
! 291: va_end(ap);
! 292: (void)fprintf(stderr, "\n");
! 293: exit(1);
! 294: /* NOTREACHED */
! 295: }
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