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 "$Id: util.c,v 1.16 1998/04/25 00:10:24 ache 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 59 void 60 prcopy(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 * 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 int 86 len_octal(s, len) 87 char *s; 88 int len; 89 { 90 int r = 0; 91 92 while (len--) 93 if (isprint((unsigned char)*s++)) r++; else r += 4; 94 return r; 95 } 96 97 int 98 prn_octal(s) 99 char *s; 100 { 101 unsigned char ch; 102 int len = 0; 103 104 while ((ch = *s++)) 105 { 106 if (isprint(ch) && (ch != '\"') && (ch != '\\')) 107 putchar(ch), len++; 108 else if (f_octal_escape) { 109 putchar('\\'); 110 switch (ch) { 111 case '\\': 112 putchar('\\'); 113 break; 114 case '\"': 115 putchar('"'); 116 break; 117 case '\a': 118 putchar('a'); 119 break; 120 case '\b': 121 putchar('b'); 122 break; 123 case '\f': 124 putchar('f'); 125 break; 126 case '\n': 127 putchar('n'); 128 break; 129 case '\r': 130 putchar('r'); 131 break; 132 case '\t': 133 putchar('t'); 134 break; 135 case '\v': 136 putchar('v'); 137 break; 138 default: 139 putchar('0' + (ch >> 6)); 140 putchar('0' + ((ch >> 3) & 3)); 141 putchar('0' + (ch & 3)); 142 len += 2; 143 break; 144 } 145 len += 2; 146 } 147 else { 148 putchar('\\'); 149 putchar('0' + (ch >> 6)); 150 putchar('0' + ((ch >> 3) & 3)); 151 putchar('0' + (ch & 3)); 152 len += 4; 153 } 154 } 155 return len; 156 } 157 158 void 159 usage() 160 { 161 (void)fprintf(stderr, "usage: ls [-ACFHLPRTWacdfgikloqrstu1]" 162 " [file ...]\n"); 163 exit(1); 164 } 165