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 * 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) 1989, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)vis.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/vis/vis.c,v 1.6 1999/08/28 01:07:25 peter Exp $
36 * $DragonFly: src/usr.bin/vis/vis.c,v 1.4 2008/10/16 01:52:34 swildner Exp $
46 int eflags, fold, foldwidth=80, none, markeol, debug;
48 void process(FILE *, char *filename);
49 static void usage(void);
50 extern int foldit(char *, int, int);
53 main(int argc, char **argv)
58 (void) setlocale(LC_CTYPE, "");
60 while ((ch = getopt(argc, argv, "nwctsobfF:ld")) != -1)
81 eflags |= VIS_NOSLASH;
84 if ((foldwidth = atoi(optarg))<5)
85 errx(1, "can't fold lines to less than 5 cols");
88 fold++; /* fold output lines to 80 cols */
89 break; /* using hidden newline */
91 markeol++; /* mark end of line with \$ */
107 if ((fp=fopen(*argv, "r")) != NULL)
114 process(stdin, "<stdin>");
123 fprintf(stderr, "usage: vis [-cbflnostwd] [-F foldwidth] [file ...]\n");
125 fprintf(stderr, "usage: vis [-cbflnostw] [-F foldwidth] [file ...]\n");
131 process(FILE *fp, char *filename)
134 char *cp = "\0"+1; /* so *(cp-1) starts out != '\n' */
147 } else if (markeol && c == '\n') {
149 if ((eflags & VIS_NOSLASH) == 0)
155 (void) vis(buff, (char)c, eflags, (char)rachar);
161 printf("<%02d,", col);
163 col = foldit(cp, col, foldwidth);
166 printf("%02d>", col);
175 * terminate partial line with a hidden newline
177 if (fold && *(cp-1) != '\n')