1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 #include "mail.h" 31 32 /* 33 * istext(line, size) - check for text characters 34 */ 35 int 36 istext(unsigned char *s, int size) 37 { 38 unsigned char *ep; 39 int c; 40 41 for (ep = s+size; --ep >= s; ) { 42 c = *ep; 43 if ((!isprint(c)) && (!isspace(c)) && 44 /* Since backspace is not included in either of the */ 45 /* above, must do separately */ 46 /* Bell character is allowable control char in the text */ 47 (c != 010) && (c != 007)) { 48 return(FALSE); 49 } 50 } 51 return(TRUE); 52 } 53