Annotation of src/usr.bin/tr/tr.c, Revision 1.4
1.4 ! mickey 1: /* $OpenBSD: tr.c,v 1.3 1997/01/15 23:43:24 millert 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1988, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)tr.c 8.2 (Berkeley) 5/4/95";
46: #endif
1.4 ! mickey 47: static char rcsid[] = "$OpenBSD: tr.c,v 1.3 1997/01/15 23:43:24 millert Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/types.h>
51:
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: cflag = dflag = sflag = 0;
1.3 millert 109: while ((ch = getopt(argc, argv, "cds")) != -1)
1.1 deraadt 110: switch((char)ch) {
111: case 'c':
112: cflag = 1;
113: break;
114: case 'd':
115: dflag = 1;
116: break;
117: case 's':
118: sflag = 1;
119: break;
120: case '?':
121: default:
122: usage();
123: }
124: argc -= optind;
125: argv += optind;
126:
127: switch(argc) {
128: case 0:
129: default:
130: usage();
131: /* NOTREACHED */
132: case 1:
133: isstring2 = 0;
134: break;
135: case 2:
136: isstring2 = 1;
137: break;
138: }
139:
140: /*
141: * tr -ds [-c] string1 string2
142: * Delete all characters (or complemented characters) in string1.
143: * Squeeze all characters in string2.
144: */
145: if (dflag && sflag) {
146: if (!isstring2)
147: usage();
148:
149: setup(string1, argv[0], &s1, cflag);
150: setup(string2, argv[1], &s2, 0);
151:
152: for (lastch = OOBCH; (ch = getchar()) != EOF;)
153: if (!string1[ch] && (!string2[ch] || lastch != ch)) {
154: lastch = ch;
155: (void)putchar(ch);
156: }
157: exit(0);
158: }
159:
160: /*
161: * tr -d [-c] string1
162: * Delete all characters (or complemented characters) in string1.
163: */
164: if (dflag) {
165: if (isstring2)
166: usage();
167:
168: setup(string1, argv[0], &s1, cflag);
169:
170: while ((ch = getchar()) != EOF)
171: if (!string1[ch])
172: (void)putchar(ch);
173: exit(0);
174: }
175:
176: /*
177: * tr -s [-c] string1
178: * Squeeze all characters (or complemented characters) in string1.
179: */
180: if (sflag && !isstring2) {
181: setup(string1, argv[0], &s1, cflag);
182:
183: for (lastch = OOBCH; (ch = getchar()) != EOF;)
184: if (!string1[ch] || lastch != ch) {
185: lastch = ch;
186: (void)putchar(ch);
187: }
188: exit(0);
189: }
190:
191: /*
192: * tr [-cs] string1 string2
193: * Replace all characters (or complemented characters) in string1 with
194: * the character in the same position in string2. If the -s option is
195: * specified, squeeze all the characters in string2.
196: */
197: if (!isstring2)
198: usage();
199:
200: s1.str = argv[0];
201: s2.str = argv[1];
202:
203: if (cflag)
204: for (cnt = NCHARS, p = string1; cnt--;)
205: *p++ = OOBCH;
206:
207: if (!next(&s2))
208: err("empty string2");
209:
210: /* If string2 runs out of characters, use the last one specified. */
211: if (sflag)
212: while (next(&s1)) {
213: string1[s1.lastch] = ch = s2.lastch;
214: string2[ch] = 1;
215: (void)next(&s2);
216: }
217: else
218: while (next(&s1)) {
219: string1[s1.lastch] = ch = s2.lastch;
220: (void)next(&s2);
221: }
222:
223: if (cflag)
224: for (cnt = 0, p = string1; cnt < NCHARS; ++p, ++cnt)
225: *p = *p == OOBCH ? ch : cnt;
226:
227: if (sflag)
228: for (lastch = OOBCH; (ch = getchar()) != EOF;) {
229: ch = string1[ch];
230: if (!string2[ch] || lastch != ch) {
231: lastch = ch;
232: (void)putchar(ch);
233: }
234: }
235: else
236: while ((ch = getchar()) != EOF)
237: (void)putchar(string1[ch]);
238: exit (0);
239: }
240:
241: static void
242: setup(string, arg, str, cflag)
243: int *string;
244: char *arg;
245: STR *str;
246: int cflag;
247: {
248: register int cnt, *p;
249:
250: str->str = arg;
251: bzero(string, NCHARS * sizeof(int));
252: while (next(str))
253: string[str->lastch] = 1;
254: if (cflag)
255: for (p = string, cnt = NCHARS; cnt--; ++p)
256: *p = !*p;
257: }
258:
259: static void
260: usage()
261: {
262: (void)fprintf(stderr, "usage: tr [-cs] string1 string2\n");
263: (void)fprintf(stderr, " tr [-c] -d string1\n");
264: (void)fprintf(stderr, " tr [-c] -s string1\n");
265: (void)fprintf(stderr, " tr [-c] -ds string1 string2\n");
266: exit(1);
267: }
268:
1.4 ! mickey 269: #ifdef __STDC__
1.1 deraadt 270: #include <stdarg.h>
271: #else
272: #include <varargs.h>
273: #endif
274:
275: void
1.4 ! mickey 276: #ifdef __STDC__
1.1 deraadt 277: err(const char *fmt, ...)
278: #else
279: err(fmt, va_alist)
280: char *fmt;
281: va_dcl
282: #endif
283: {
284: va_list ap;
1.4 ! mickey 285: #ifdef __STDC__
1.1 deraadt 286: va_start(ap, fmt);
287: #else
288: va_start(ap);
289: #endif
290: (void)fprintf(stderr, "tr: ");
291: (void)vfprintf(stderr, fmt, ap);
292: va_end(ap);
293: (void)fprintf(stderr, "\n");
294: exit(1);
295: /* NOTREACHED */
296: }
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