util.c revision 62597
11556Srgrimes/* 21556Srgrimes * Copyright (c) 1989, 1993, 1994 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Michael Fischbein. 71556Srgrimes * 81556Srgrimes * Redistribution and use in source and binary forms, with or without 91556Srgrimes * modification, are permitted provided that the following conditions 101556Srgrimes * are met: 111556Srgrimes * 1. Redistributions of source code must retain the above copyright 121556Srgrimes * notice, this list of conditions and the following disclaimer. 131556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141556Srgrimes * notice, this list of conditions and the following disclaimer in the 151556Srgrimes * documentation and/or other materials provided with the distribution. 161556Srgrimes * 3. All advertising materials mentioning features or use of this software 171556Srgrimes * must display the following acknowledgement: 181556Srgrimes * This product includes software developed by the University of 191556Srgrimes * California, Berkeley and its contributors. 201556Srgrimes * 4. Neither the name of the University nor the names of its contributors 211556Srgrimes * may be used to endorse or promote products derived from this software 221556Srgrimes * without specific prior written permission. 231556Srgrimes * 241556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341556Srgrimes * SUCH DAMAGE. 351556Srgrimes */ 361556Srgrimes 371556Srgrimes#ifndef lint 3827967Ssteve#if 0 3927967Sstevestatic char sccsid[] = "@(#)util.c 8.3 (Berkeley) 4/2/94"; 4027967Ssteve#else 4127958Sstevestatic const char rcsid[] = 4250471Speter "$FreeBSD: head/bin/ls/util.c 62597 2000-07-04 23:09:23Z assar $"; 4327967Ssteve#endif 441556Srgrimes#endif /* not lint */ 451556Srgrimes 461556Srgrimes#include <sys/types.h> 471556Srgrimes#include <sys/stat.h> 481556Srgrimes 491556Srgrimes#include <ctype.h> 5035373Sdes#include <err.h> 511556Srgrimes#include <fts.h> 521556Srgrimes#include <stdio.h> 531556Srgrimes#include <stdlib.h> 541556Srgrimes#include <string.h> 551556Srgrimes 561556Srgrimes#include "ls.h" 571556Srgrimes#include "extern.h" 581556Srgrimes 5962597Sassarint 6062597Sassarprn_printable(s) 6162597Sassar const char *s; 621556Srgrimes{ 6362597Sassar unsigned char c; 6462597Sassar int n; 651556Srgrimes 6662597Sassar for (n = 0; (c = *s) != '\0'; ++s, ++n) 6762597Sassar if (isprint(c)) 6862597Sassar putchar(c); 6962597Sassar else 7062597Sassar putchar('?'); 7162597Sassar return n; 721556Srgrimes} 731556Srgrimes 7435373Sdes/* 7535373Sdes * The fts system makes it difficult to replace fts_name with a different- 7635373Sdes * sized string, so we just calculate the real length here and do the 7735373Sdes * conversion in prn_octal() 7835417Sdes * 7935417Sdes * XXX when using f_octal_escape (-b) rather than f_octal (-B), the 8035417Sdes * length computed by len_octal may be too big. I just can't be buggered 8135417Sdes * to fix this as an efficient fix would involve a lookup table. Same goes 8235417Sdes * for the rather inelegant code in prn_octal. 8335417Sdes * 8435417Sdes * DES 1998/04/23 8535373Sdes */ 8635417Sdes 8735373Sdesint 8835373Sdeslen_octal(s, len) 8962597Sassar const char *s; 9035373Sdes int len; 9135373Sdes{ 9235441Sache int r = 0; 9335373Sdes 9435373Sdes while (len--) 9535440Sache if (isprint((unsigned char)*s++)) r++; else r += 4; 9635373Sdes return r; 9735373Sdes} 9835373Sdes 9935373Sdesint 10035373Sdesprn_octal(s) 10162597Sassar const char *s; 10235373Sdes{ 10335373Sdes unsigned char ch; 10435373Sdes int len = 0; 10535373Sdes 10635373Sdes while ((ch = *s++)) 10735373Sdes { 10835426Sdes if (isprint(ch) && (ch != '\"') && (ch != '\\')) 10935426Sdes putchar(ch), len++; 11035417Sdes else if (f_octal_escape) { 11135417Sdes putchar('\\'); 11235417Sdes switch (ch) { 11335417Sdes case '\\': 11435417Sdes putchar('\\'); 11535417Sdes break; 11635417Sdes case '\"': 11735417Sdes putchar('"'); 11835417Sdes break; 11935417Sdes case '\a': 12035417Sdes putchar('a'); 12135417Sdes break; 12235417Sdes case '\b': 12335417Sdes putchar('b'); 12435417Sdes break; 12535417Sdes case '\f': 12635417Sdes putchar('f'); 12735417Sdes break; 12835417Sdes case '\n': 12935417Sdes putchar('n'); 13035417Sdes break; 13135417Sdes case '\r': 13235417Sdes putchar('r'); 13335417Sdes break; 13435417Sdes case '\t': 13535417Sdes putchar('t'); 13635417Sdes break; 13735417Sdes case '\v': 13835417Sdes putchar('v'); 13935417Sdes break; 14035417Sdes default: 14135417Sdes putchar('0' + (ch >> 6)); 14240300Sdes putchar('0' + ((ch >> 3) & 7)); 14340300Sdes putchar('0' + (ch & 7)); 14435417Sdes len += 2; 14535417Sdes break; 14635417Sdes } 14735417Sdes len += 2; 14835417Sdes } 14935417Sdes else { 15035417Sdes putchar('\\'); 15135417Sdes putchar('0' + (ch >> 6)); 15240300Sdes putchar('0' + ((ch >> 3) & 7)); 15340300Sdes putchar('0' + (ch & 7)); 15435417Sdes len += 4; 15535417Sdes } 15635373Sdes } 15735373Sdes return len; 15835373Sdes} 15935373Sdes 1601556Srgrimesvoid 1611556Srgrimesusage() 1621556Srgrimes{ 16361324Sache (void)fprintf(stderr, 16461324Sache#ifdef COLORLS 16561324Sache "usage: ls [-ACFGHLPRTWacdfgiklnoqrstu1]" 16661324Sache#else 16761324Sache "usage: ls [-ACFHLPRTWacdfgiklnoqrstu1]" 16861324Sache#endif 16935426Sdes " [file ...]\n"); 1701556Srgrimes exit(1); 1711556Srgrimes} 172