Annotation of src/usr.bin/tr/tr.c, Revision 1.11
1.11 ! mickey 1: /* $OpenBSD: tr.c,v 1.10 2003/06/10 22:20:53 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: tr.c,v 1.5 1995/08/31 22:13:48 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.9 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: static char copyright[] =
35: "@(#) Copyright (c) 1988, 1993\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)tr.c 8.2 (Berkeley) 5/4/95";
42: #endif
1.11 ! mickey 43: static char rcsid[] = "$OpenBSD: tr.c,v 1.10 2003/06/10 22:20:53 deraadt Exp $";
1.1 deraadt 44: #endif /* not lint */
45:
46: #include <sys/types.h>
47:
48: #include <stdio.h>
49: #include <stdlib.h>
50: #include <string.h>
51: #include <unistd.h>
1.5 mickey 52: #include <err.h>
1.1 deraadt 53:
54: #include "extern.h"
55:
56: static int string1[NCHARS] = {
57: 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* ASCII */
58: 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
59: 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
60: 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
61: 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
62: 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
63: 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
64: 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
65: 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
66: 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
67: 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
68: 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
69: 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
70: 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
71: 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
72: 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
73: 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
74: 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
75: 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
76: 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
77: 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
78: 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
79: 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
80: 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
81: 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
82: 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
83: 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
84: 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
85: 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
86: 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
87: 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
88: 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
89: }, string2[NCHARS];
90:
91: STR s1 = { STRING1, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL };
92: STR s2 = { STRING2, NORMAL, 0, OOBCH, { 0, OOBCH }, NULL, NULL };
93:
1.8 millert 94: static void setup(int *, char *, STR *, int);
95: static void usage(void);
1.1 deraadt 96:
97: int
1.10 deraadt 98: main(int argc, char *argv[])
1.1 deraadt 99: {
1.6 mpech 100: int ch, cnt, lastch, *p;
1.1 deraadt 101: int cflag, dflag, sflag, isstring2;
102:
103: cflag = dflag = sflag = 0;
1.3 millert 104: while ((ch = getopt(argc, argv, "cds")) != -1)
1.1 deraadt 105: switch((char)ch) {
106: case 'c':
107: cflag = 1;
108: break;
109: case 'd':
110: dflag = 1;
111: break;
112: case 's':
113: sflag = 1;
114: break;
115: case '?':
116: default:
117: usage();
118: }
119: argc -= optind;
120: argv += optind;
121:
122: switch(argc) {
123: case 0:
124: default:
125: usage();
126: /* NOTREACHED */
127: case 1:
128: isstring2 = 0;
129: break;
130: case 2:
131: isstring2 = 1;
132: break;
133: }
134:
135: /*
136: * tr -ds [-c] string1 string2
137: * Delete all characters (or complemented characters) in string1.
138: * Squeeze all characters in string2.
139: */
140: if (dflag && sflag) {
141: if (!isstring2)
142: usage();
143:
144: setup(string1, argv[0], &s1, cflag);
145: setup(string2, argv[1], &s2, 0);
146:
147: for (lastch = OOBCH; (ch = getchar()) != EOF;)
148: if (!string1[ch] && (!string2[ch] || lastch != ch)) {
149: lastch = ch;
150: (void)putchar(ch);
151: }
152: exit(0);
153: }
154:
155: /*
156: * tr -d [-c] string1
157: * Delete all characters (or complemented characters) in string1.
158: */
159: if (dflag) {
160: if (isstring2)
161: usage();
162:
163: setup(string1, argv[0], &s1, cflag);
164:
165: while ((ch = getchar()) != EOF)
166: if (!string1[ch])
167: (void)putchar(ch);
168: exit(0);
169: }
170:
171: /*
172: * tr -s [-c] string1
173: * Squeeze all characters (or complemented characters) in string1.
174: */
175: if (sflag && !isstring2) {
176: setup(string1, argv[0], &s1, cflag);
177:
178: for (lastch = OOBCH; (ch = getchar()) != EOF;)
179: if (!string1[ch] || lastch != ch) {
180: lastch = ch;
181: (void)putchar(ch);
182: }
183: exit(0);
184: }
185:
186: /*
187: * tr [-cs] string1 string2
188: * Replace all characters (or complemented characters) in string1 with
189: * the character in the same position in string2. If the -s option is
190: * specified, squeeze all the characters in string2.
191: */
192: if (!isstring2)
193: usage();
194:
195: s1.str = argv[0];
196: s2.str = argv[1];
197:
198: if (cflag)
199: for (cnt = NCHARS, p = string1; cnt--;)
200: *p++ = OOBCH;
201:
202: if (!next(&s2))
1.5 mickey 203: errx(1, "empty string2");
1.1 deraadt 204:
205: /* If string2 runs out of characters, use the last one specified. */
1.7 deraadt 206: ch = s2.lastch;
1.1 deraadt 207: if (sflag)
208: while (next(&s1)) {
209: string1[s1.lastch] = ch = s2.lastch;
210: string2[ch] = 1;
211: (void)next(&s2);
212: }
213: else
214: while (next(&s1)) {
215: string1[s1.lastch] = ch = s2.lastch;
216: (void)next(&s2);
217: }
218:
219: if (cflag)
220: for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt)
221: *p = *p == OOBCH ? ch : cnt;
222:
223: if (sflag)
224: for (lastch = OOBCH; (ch = getchar()) != EOF;) {
225: ch = string1[ch];
226: if (!string2[ch] || lastch != ch) {
227: lastch = ch;
228: (void)putchar(ch);
229: }
230: }
231: else
232: while ((ch = getchar()) != EOF)
233: (void)putchar(string1[ch]);
234: exit (0);
235: }
236:
237: static void
1.10 deraadt 238: setup(int *string, char *arg, STR *str, int cflag)
1.1 deraadt 239: {
1.6 mpech 240: int cnt, *p;
1.1 deraadt 241:
242: str->str = arg;
243: bzero(string, NCHARS * sizeof(int));
244: while (next(str))
245: string[str->lastch] = 1;
246: if (cflag)
247: for (p = string, cnt = NCHARS; cnt--; ++p)
248: *p = !*p;
249: }
250:
251: static void
1.10 deraadt 252: usage(void)
1.1 deraadt 253: {
1.11 ! mickey 254: (void)fprintf(stderr, "usage:\ttr [-cs] string1 string2\n"
! 255: "\ttr [-c] -d string1\n"
! 256: "\ttr [-c] -s string1\n"
! 257: "\ttr [-c] -ds string1 string2\n");
1.1 deraadt 258: exit(1);
259: }
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