Home | History | Annotate | Download | only in common
      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 AT&T */
     23 /*        All Rights Reserved   */
     24 
     25 #pragma ident	"%Z%%M%	%I%	%E% SMI"  /* from S5R2 1.5 */
     26 
     27 /*LINTLIBRARY*/
     28 /*
     29  * convert base 64 ascii to long int
     30  * char set is [./0-9A-Za-z]
     31  *
     32  */
     33 
     34 #define BITSPERCHAR	6 /* to hold entire character set */
     35 
     36 long
     37 a64l(s)
     38 register char *s;
     39 {
     40 	register int i, c;
     41 	long lg = 0;
     42 
     43 	for (i = 0; (c = *s++) != '\0'; i += BITSPERCHAR) {
     44 		if (c > 'Z')
     45 			c -= 'a' - 'Z' - 1;
     46 		if (c > '9')
     47 			c -= 'A' - '9' - 1;
     48 		lg |= (long)(c - ('0' - 2)) << i;
     49 	}
     50 	return (lg);
     51 }
     52