2 * Copyright (c) 1989, 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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 static const char copyright[] =
36 "@(#) Copyright (c) 1989, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
41 static const char sccsid[] = "@(#)vis.c 8.1 (Berkeley) 6/6/93";
53 int eflags, fold, foldwidth=80, none, markeol, debug;
56 static void usage(void);
59 main(int argc, char *argv[])
64 (void) setlocale(LC_CTYPE, "");
66 while ((ch = getopt(argc, argv, "nwctsobfF:ld")) != -1)
87 eflags |= VIS_NOSLASH;
90 if ((foldwidth = atoi(optarg))<5)
91 errx(1, "can't fold lines to less than 5 cols");
94 fold++; /* fold output lines to 80 cols */
95 break; /* using hidden newline */
97 markeol++; /* mark end of line with \$ */
113 if ((fp=fopen(*argv, "r")) != NULL)
129 fprintf(stderr, "usage: vis [-cbflnostwd] [-F foldwidth] [file ...]\n");
131 fprintf(stderr, "usage: vis [-cbflnostw] [-F foldwidth] [file ...]\n");
140 static char dummy[] = "\0";
141 char *cp = dummy+1; /* so *(cp-1) starts out != '\n' */
154 } else if (markeol && c == '\n') {
156 if ((eflags & VIS_NOSLASH) == 0)
162 (void) vis(buff, (char)c, eflags, (char)rachar);
168 printf("<%02d,", col);
170 col = foldit(cp, col, foldwidth);
173 printf("%02d>", col);
182 * terminate partial line with a hidden newline
184 if (fold && *(cp-1) != '\n')