Remove not needed void casts.
[dragonfly.git] / bin / ls / util.c
CommitLineData
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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.
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35 *
36 * @(#)util.c 8.3 (Berkeley) 4/2/94
37 * $FreeBSD: src/bin/ls/util.c,v 1.20.2.5 2002/07/08 06:59:27 tjr Exp $
57fed2af 38 * $DragonFly: src/bin/ls/util.c,v 1.4 2004/11/07 20:54:51 eirikn Exp $
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39 */
40
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41#include <sys/types.h>
42#include <sys/stat.h>
43
44#include <ctype.h>
45#include <err.h>
46#include <fts.h>
47#include <stdio.h>
48#include <stdlib.h>
49#include <string.h>
50
51#include "ls.h"
52#include "extern.h"
53
54int
55prn_printable(const char *s)
56{
57 char c;
58 int n;
59
60 for (n = 0; (c = *s) != '\0'; ++s, ++n)
61 if (isprint((unsigned char)c))
62 putchar(c);
63 else
64 putchar('?');
65 return n;
66}
67
68/*
69 * The fts system makes it difficult to replace fts_name with a different-
70 * sized string, so we just calculate the real length here and do the
71 * conversion in prn_octal()
72 *
73 * XXX when using f_octal_escape (-b) rather than f_octal (-B), the
74 * length computed by len_octal may be too big. I just can't be buggered
75 * to fix this as an efficient fix would involve a lookup table. Same goes
76 * for the rather inelegant code in prn_octal.
77 *
78 * DES 1998/04/23
79 */
80
81size_t
82len_octal(const char *s, int len)
83{
84 size_t r = 0;
85
86 while (len--)
87 if (isprint((unsigned const char)*s++)) r++; else r += 4;
88 return r;
89}
90
91int
92prn_octal(const char *s)
93{
94 unsigned char ch;
95 int len = 0;
96
97 while ((ch = (unsigned char)*s++)) {
98 if (isprint(ch) && (ch != '\"') && (ch != '\\'))
99 putchar(ch), len++;
100 else if (f_octal_escape) {
101 putchar('\\');
102 switch (ch) {
103 case '\\':
104 putchar('\\');
105 break;
106 case '\"':
107 putchar('"');
108 break;
109 case '\a':
110 putchar('a');
111 break;
112 case '\b':
113 putchar('b');
114 break;
115 case '\f':
116 putchar('f');
117 break;
118 case '\n':
119 putchar('n');
120 break;
121 case '\r':
122 putchar('r');
123 break;
124 case '\t':
125 putchar('t');
126 break;
127 case '\v':
128 putchar('v');
129 break;
130 default:
131 putchar('0' + (ch >> 6));
132 putchar('0' + ((ch >> 3) & 7));
133 putchar('0' + (ch & 7));
134 len += 2;
135 break;
136 }
137 len += 2;
138 }
139 else {
140 putchar('\\');
141 putchar('0' + (ch >> 6));
142 putchar('0' + ((ch >> 3) & 7));
143 putchar('0' + (ch & 7));
144 len += 4;
145 }
146 }
147 return len;
148}
149
150void
151usage(void)
152{
57fed2af 153 fprintf(stderr,
984263bc 154#ifdef COLORLS
0edf7406 155 "usage: ls [-ABCFGHLPRTWabcdfghiklmnoqrstuwx1]"
984263bc 156#else
0edf7406 157 "usage: ls [-ABCFHLPRTWabcdfghiklmnoqrstuwx1]"
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158#endif
159 " [file ...]\n");
160 exit(1);
161}