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 #if 0 38 #ifndef lint 39 static char sccsid[] = "@(#)util.c 8.3 (Berkeley) 4/2/94"; 40 #endif /* not lint */ 41 #endif 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/types.h> 46 #include <sys/stat.h> 47 48 #include <ctype.h> 49 #include <err.h> 50 #include <fts.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #include "ls.h" 56 #include "extern.h" 57 58 int 59 prn_printable(const char *s) 60 { 61 char c; 62 int n; 63 64 for (n = 0; (c = *s) != '\0'; ++s, ++n) 65 if (isprint((unsigned char)c)) 66 putchar(c); 67 else 68 putchar('?'); 69 return n; 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 * 77 * XXX when using f_octal_escape (-b) rather than f_octal (-B), the 78 * length computed by len_octal may be too big. I just can't be buggered 79 * to fix this as an efficient fix would involve a lookup table. Same goes 80 * for the rather inelegant code in prn_octal. 81 * 82 * DES 1998/04/23 83 */ 84 85 size_t 86 len_octal(const char *s, int len) 87 { 88 size_t r = 0; 89 90 while (len--) 91 if (isprint((unsigned const char)*s++)) r++; else r += 4; 92 return r; 93 } 94 95 int 96 prn_octal(const char *s) 97 { 98 unsigned char ch; 99 int len = 0; 100 101 while ((ch = (unsigned char)*s++)) { 102 if (isprint(ch) && (ch != '\"') && (ch != '\\')) 103 putchar(ch), len++; 104 else if (f_octal_escape) { 105 putchar('\\'); 106 switch (ch) { 107 case '\\': 108 putchar('\\'); 109 break; 110 case '\"': 111 putchar('"'); 112 break; 113 case '\a': 114 putchar('a'); 115 break; 116 case '\b': 117 putchar('b'); 118 break; 119 case '\f': 120 putchar('f'); 121 break; 122 case '\n': 123 putchar('n'); 124 break; 125 case '\r': 126 putchar('r'); 127 break; 128 case '\t': 129 putchar('t'); 130 break; 131 case '\v': 132 putchar('v'); 133 break; 134 default: 135 putchar('0' + (ch >> 6)); 136 putchar('0' + ((ch >> 3) & 7)); 137 putchar('0' + (ch & 7)); 138 len += 2; 139 break; 140 } 141 len += 2; 142 } 143 else { 144 putchar('\\'); 145 putchar('0' + (ch >> 6)); 146 putchar('0' + ((ch >> 3) & 7)); 147 putchar('0' + (ch & 7)); 148 len += 4; 149 } 150 } 151 return len; 152 } 153 154 void 155 usage(void) 156 { 157 (void)fprintf(stderr, 158 #ifdef COLORLS 159 "usage: ls [-ABCFGHLPRTWZabcdfghiklnoqrstu1]" 160 #else 161 "usage: ls [-ABCFHLPRTWZabcdfghiklnoqrstu1]" 162 #endif 163 " [file ...]\n"); 164 exit(1); 165 } 166