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 39 static char sccsid[] = "@(#)util.c 8.3 (Berkeley) 4/2/94"; 40 #else 41 static const char rcsid[] = 42 "$FreeBSD$"; 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 59 int 60 prn_printable(s) 61 const char *s; 62 { 63 unsigned char c; 64 int n; 65 66 for (n = 0; (c = *s) != '\0'; ++s, ++n) 67 if (isprint(c)) 68 putchar(c); 69 else 70 putchar('?'); 71 return n; 72 } 73 74 /* 75 * The fts system makes it difficult to replace fts_name with a different- 76 * sized string, so we just calculate the real length here and do the 77 * conversion in prn_octal() 78 * 79 * XXX when using f_octal_escape (-b) rather than f_octal (-B), the 80 * length computed by len_octal may be too big. I just can't be buggered 81 * to fix this as an efficient fix would involve a lookup table. Same goes 82 * for the rather inelegant code in prn_octal. 83 * 84 * DES 1998/04/23 85 */ 86 87 int 88 len_octal(s, len) 89 const char *s; 90 int len; 91 { 92 int r = 0; 93 94 while (len--) 95 if (isprint((unsigned char)*s++)) r++; else r += 4; 96 return r; 97 } 98 99 int 100 prn_octal(s) 101 const char *s; 102 { 103 unsigned char ch; 104 int len = 0; 105 106 while ((ch = *s++)) 107 { 108 if (isprint(ch) && (ch != '\"') && (ch != '\\')) 109 putchar(ch), len++; 110 else if (f_octal_escape) { 111 putchar('\\'); 112 switch (ch) { 113 case '\\': 114 putchar('\\'); 115 break; 116 case '\"': 117 putchar('"'); 118 break; 119 case '\a': 120 putchar('a'); 121 break; 122 case '\b': 123 putchar('b'); 124 break; 125 case '\f': 126 putchar('f'); 127 break; 128 case '\n': 129 putchar('n'); 130 break; 131 case '\r': 132 putchar('r'); 133 break; 134 case '\t': 135 putchar('t'); 136 break; 137 case '\v': 138 putchar('v'); 139 break; 140 default: 141 putchar('0' + (ch >> 6)); 142 putchar('0' + ((ch >> 3) & 7)); 143 putchar('0' + (ch & 7)); 144 len += 2; 145 break; 146 } 147 len += 2; 148 } 149 else { 150 putchar('\\'); 151 putchar('0' + (ch >> 6)); 152 putchar('0' + ((ch >> 3) & 7)); 153 putchar('0' + (ch & 7)); 154 len += 4; 155 } 156 } 157 return len; 158 } 159 160 void 161 usage() 162 { 163 (void)fprintf(stderr, 164 #ifdef COLORLS 165 "usage: ls [-ACFGHLPRTWacdfgiklnoqrstu1]" 166 #else 167 "usage: ls [-ACFHLPRTWacdfgiklnoqrstu1]" 168 #endif 169 " [file ...]\n"); 170 exit(1); 171 } 172