2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)expand.c 8.1 (Berkeley) 6/9/93
35 * $FreeBSD: src/usr.bin/expand/expand.c,v 1.5.2.6 2002/07/09 10:47:59 tjr Exp $
36 * $DragonFly: src/usr.bin/expand/expand.c,v 1.4 2005/04/10 20:55:38 drhodus Exp $
47 * expand - expand tabs to equivalent spaces
52 static void getstops(char *);
53 static void usage(void);
56 main(int argc, char **argv)
62 setlocale(LC_CTYPE, "");
64 /* handle obsolete syntax */
65 while (argc > 1 && argv[1][0] == '-' &&
66 isdigit((unsigned char)argv[1][1])) {
67 getstops(&argv[1][1]);
71 while ((c = getopt (argc, argv, "t:")) != -1) {
88 if (freopen(argv[0], "r", stdin) == NULL) {
97 while ((c = getchar()) != EOF) {
104 } while (column & 07);
111 } while (((column - 1) % tabstops[0]) != (tabstops[0] - 1));
114 for (n = 0; n < nstops; n++)
115 if (tabstops[n] > column)
122 while (column < tabstops[n]) {
158 while (*cp >= '0' && *cp <= '9')
159 i = i * 10 + *cp++ - '0';
161 errx(1, "bad tab stop spec");
162 if (nstops > 0 && i <= tabstops[nstops-1])
163 errx(1, "bad tab stop spec");
164 if (nstops == sizeof(tabstops) / sizeof(*tabstops))
165 errx(1, "too many tab stops");
166 tabstops[nstops++] = i;
169 if (*cp != ',' && !isblank((unsigned char)*cp))
170 errx(1, "bad tab stop spec");
178 (void)fprintf (stderr, "usage: expand [-t tablist] [file ...]\n");