util.c revision 35373 
1/*
2 * Copyright (c) 1989, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Michael Fischbein.
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#if 0
39static char sccsid[] = "@(#)util.c	8.3 (Berkeley) 4/2/94";
40#else
41static const char rcsid[] =
42	"$Id: util.c,v 1.11 1997/08/07 22:28:25 steve Exp $";
43#endif
44#endif /* not lint */
45
46#include <sys/types.h>
47#include <sys/stat.h>
48
49#include <ctype.h>
50#include <err.h>
51#include <fts.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55
56#include "ls.h"
57#include "extern.h"
58
59void
60prcopy(src, dest, len)
61	char *src, *dest;
62	int len;
63{
64	unsigned char ch;
65
66	while (len--) {
67		ch = *src++;
68		*dest++ = isprint(ch) ? ch : '?';
69	}
70}
71
72/*
73 * The fts system makes it difficult to replace fts_name with a different-
74 * sized string, so we just calculate the real length here and do the
75 * conversion in prn_octal()
76 */
77int
78len_octal(s, len)
79        char *s;
80	int len;
81{
82        int r;
83
84	while (len--)
85	    if (isprint(*s++)) r++; else r += 4;
86	return r;
87}
88
89int
90prn_octal(s)
91        char *s;
92{
93        unsigned char ch;
94	int len = 0;
95
96        while ((ch = *s++))
97	{
98	    if (isprint(ch)) putchar(ch), len++;
99	    else {
100		    putchar('\\');
101		    putchar('0' + (ch >> 6));
102		    putchar('0' + ((ch >> 3) & 3));
103		    putchar('0' + (ch & 3));
104		    len += 4;
105	    }
106	}
107	return len;
108}
109
110void
111usage()
112{
113#ifdef BSD4_4_LITE
114	(void)fprintf(stderr, "usage: ls [-1ACFLRTacdfiklqrstu] [file ...]\n");
115#else
116	(void)fprintf(stderr, "usage: ls [-ACFLRTWacdfgikloqrstu1] [file ...]\n");
117#endif
118	exit(1);
119}
120