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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1. */ 27 #include "mail.h" 28 29 /* 30 * istext(line, size) - check for text characters 31 */ 32 int 33 istext(s, size) 34 register unsigned char *s; 35 int size; 36 { 37 register unsigned char *ep; 38 register c; 39 40 for (ep = s+size; --ep >= s; ) { 41 c = *ep; 42 if ((!isprint(c)) && (!isspace(c)) && 43 /* Since backspace is not included in either of the */ 44 /* above, must do separately */ 45 /* Bell character is allowable control char in the text */ 46 (c != 010) && (c != 007)) { 47 return(FALSE); 48 } 49 } 50 return(TRUE); 51 } 52