1 /* $NetBSD: util.c,v 1.27 2003/09/22 02:43:20 jschauma Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Michael Fischbein. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)util.c 8.5 (Berkeley) 4/28/95"; 39 #else 40 __RCSID("$NetBSD: util.c,v 1.27 2003/09/22 02:43:20 jschauma Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 47 #include <ctype.h> 48 #include <err.h> 49 #include <fts.h> 50 #include <limits.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <vis.h> 55 56 #include "ls.h" 57 #include "extern.h" 58 59 int 60 safe_print(const char *src) 61 { 62 size_t len; 63 char *name; 64 int flags; 65 66 flags = VIS_NL | VIS_OCTAL; 67 if (f_octal_escape) 68 flags |= VIS_CSTYLE; 69 70 len = strlen(src); 71 if (len != 0 && SIZE_T_MAX/len <= 4) { 72 errx(EXIT_FAILURE, "%s: name too long", src); 73 /* NOTREACHED */ 74 } 75 76 name = (char *)malloc(4*len+1); 77 if (name != NULL) { 78 len = strvis(name, src, flags); 79 printf("%s", name); 80 free(name); 81 return len; 82 } else 83 errx(EXIT_FAILURE, "out of memory!"); 84 /* NOTREACHED */ 85 } 86 87 int 88 printescaped(const char *src) 89 { 90 unsigned char c; 91 int n; 92 93 for (n = 0; (c = *src) != '\0'; ++src, ++n) 94 if (isprint(c)) 95 (void)putchar(c); 96 else 97 (void)putchar('?'); 98 return n; 99 } 100 101 void 102 usage(void) 103 { 104 105 (void)fprintf(stderr, 106 "usage: ls [-AaBbCcdFfgikLlmnopqRrSsTtuWwx1] [file ...]\n"); 107 exit(EXIT_FAILURE); 108 /* NOTREACHED */ 109 } 110