1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * 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 are permitted 9 * provided that the above copyright notice and this paragraph are 10 * duplicated in all such forms and that any documentation, 11 * advertising materials, and other materials related to such 12 * distribution and use acknowledge that the software was developed 13 * by the University of California, Berkeley. The name of the 14 * University may not be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19 */ 20 21 #ifndef lint 22 static char sccsid[] = "@(#)util.c 5.3 (Berkeley) 06/25/89"; 23 #endif /* not lint */ 24 25 #include <sys/types.h> 26 #include <stdio.h> 27 #include <ctype.h> 28 29 prcopy(src, dest, len) 30 register char *src, *dest; 31 register int len; 32 { 33 register int ch; 34 35 while(len--) { 36 ch = *src++; 37 *dest++ = isprint(ch) ? ch : '?'; 38 } 39 } 40 41 char 42 *emalloc(size) 43 u_int size; 44 { 45 char *retval, *malloc(); 46 47 if (!(retval = malloc(size))) 48 nomem(); 49 return(retval); 50 } 51 52 nomem() 53 { 54 (void)fprintf(stderr, "ls: out of memory.\n"); 55 exit(1); 56 } 57 58 usage() 59 { 60 (void)fprintf(stderr, "usage: ls [-1ACFLRacdfgilqrstu] [file ...]\n"); 61 exit(1); 62 } 63