xref: /illumos-gate/usr/src/lib/libc/port/gen/euclen.c (revision 1da57d55)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7257d1b4Sraf  * Common Development and Distribution License (the "License").
6*7257d1b4Sraf  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
21*7257d1b4Sraf 
227c478bd9Sstevel@tonic-gate /*
23*7257d1b4Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24a0b85df4Sstevel  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
27*7257d1b4Sraf #include "lint.h"
28*7257d1b4Sraf #include <euc.h>
29*7257d1b4Sraf #include <ctype.h>
307c478bd9Sstevel@tonic-gate 
317c478bd9Sstevel@tonic-gate /*
327c478bd9Sstevel@tonic-gate  * euccol(s) returns the screen column width of the EUC char.
337c478bd9Sstevel@tonic-gate  */
347c478bd9Sstevel@tonic-gate int
euccol(const unsigned char * s)357c478bd9Sstevel@tonic-gate euccol(const unsigned char *s)
367c478bd9Sstevel@tonic-gate {
377c478bd9Sstevel@tonic-gate 
387c478bd9Sstevel@tonic-gate 	if (ISASCII(*s))
397c478bd9Sstevel@tonic-gate 		return (1);
407c478bd9Sstevel@tonic-gate 	else
417c478bd9Sstevel@tonic-gate 		switch (*s) {
427c478bd9Sstevel@tonic-gate 		case SS2:
437c478bd9Sstevel@tonic-gate 			return (scrw2);
447c478bd9Sstevel@tonic-gate 		case SS3:
457c478bd9Sstevel@tonic-gate 			return (scrw3);
467c478bd9Sstevel@tonic-gate 		default: /* code set 1 */
477c478bd9Sstevel@tonic-gate 			return (scrw1);
487c478bd9Sstevel@tonic-gate 		}
497c478bd9Sstevel@tonic-gate }
507c478bd9Sstevel@tonic-gate 
517c478bd9Sstevel@tonic-gate /*
527c478bd9Sstevel@tonic-gate  * euclen(s,n) returns the code width of the  EUC char.
537c478bd9Sstevel@tonic-gate  * May also be implemented as a macro.
547c478bd9Sstevel@tonic-gate  */
557c478bd9Sstevel@tonic-gate int
euclen(const unsigned char * s)567c478bd9Sstevel@tonic-gate euclen(const unsigned char *s)
577c478bd9Sstevel@tonic-gate {
587c478bd9Sstevel@tonic-gate 
597c478bd9Sstevel@tonic-gate 	if (ISASCII(*s))
607c478bd9Sstevel@tonic-gate 		return (1);
617c478bd9Sstevel@tonic-gate 	else
627c478bd9Sstevel@tonic-gate 		switch (*s) {
637c478bd9Sstevel@tonic-gate 		case SS2:
647c478bd9Sstevel@tonic-gate 			return (eucw2 + 1); /* include SS2 */
657c478bd9Sstevel@tonic-gate 		case SS3:
667c478bd9Sstevel@tonic-gate 			return (eucw3 + 1); /* include SS3 */
677c478bd9Sstevel@tonic-gate 		default: /* code set 1 */
687c478bd9Sstevel@tonic-gate 			return (eucw1);
697c478bd9Sstevel@tonic-gate 		}
707c478bd9Sstevel@tonic-gate }
717c478bd9Sstevel@tonic-gate 
727c478bd9Sstevel@tonic-gate /* this function will return the number of display column for a */
737c478bd9Sstevel@tonic-gate /* given euc string.						*/
747c478bd9Sstevel@tonic-gate int
eucscol(const unsigned char * s)757c478bd9Sstevel@tonic-gate eucscol(const unsigned char *s)
767c478bd9Sstevel@tonic-gate 
777c478bd9Sstevel@tonic-gate {
787c478bd9Sstevel@tonic-gate 	int	col = 0;
797c478bd9Sstevel@tonic-gate 
807c478bd9Sstevel@tonic-gate 	while (*s) { /* end if euc char is a NULL character */
817c478bd9Sstevel@tonic-gate 		if (ISASCII(*s)) {
827c478bd9Sstevel@tonic-gate 			col += 1;
837c478bd9Sstevel@tonic-gate 			s++;
847c478bd9Sstevel@tonic-gate 		}
857c478bd9Sstevel@tonic-gate 		else
867c478bd9Sstevel@tonic-gate 			switch (*s) {
877c478bd9Sstevel@tonic-gate 			case SS2:
887c478bd9Sstevel@tonic-gate 				col += scrw2;
897c478bd9Sstevel@tonic-gate 				s += (eucw2 +1);
907c478bd9Sstevel@tonic-gate 				break;
917c478bd9Sstevel@tonic-gate 			case SS3:
927c478bd9Sstevel@tonic-gate 				col += scrw3;
937c478bd9Sstevel@tonic-gate 				s += (eucw3 +1);
947c478bd9Sstevel@tonic-gate 				break;
957c478bd9Sstevel@tonic-gate 			default:	/* code set 1 */
967c478bd9Sstevel@tonic-gate 				col += scrw1;
977c478bd9Sstevel@tonic-gate 				s += eucw1;
987c478bd9Sstevel@tonic-gate 				break;
997c478bd9Sstevel@tonic-gate 			}
1007c478bd9Sstevel@tonic-gate 
1017c478bd9Sstevel@tonic-gate 	}
1027c478bd9Sstevel@tonic-gate 	return (col);
1037c478bd9Sstevel@tonic-gate }
104