xref: /titanic_50/usr/src/lib/libc/port/gen/euclen.c (revision 7257d1b4d25bfac0c802847390e98a464fd787ac)
1 7c478bd9Sstevel@tonic-gate /*
2 7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3 7c478bd9Sstevel@tonic-gate  *
4 7c478bd9Sstevel@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.
7 7c478bd9Sstevel@tonic-gate  *
8 7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
10 7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
11 7c478bd9Sstevel@tonic-gate  * and limitations under the License.
12 7c478bd9Sstevel@tonic-gate  *
13 7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
14 7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
16 7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
17 7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
18 7c478bd9Sstevel@tonic-gate  *
19 7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
20 7c478bd9Sstevel@tonic-gate  */
21 *7257d1b4Sraf 
22 7c478bd9Sstevel@tonic-gate /*
23 *7257d1b4Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 a0b85df4Sstevel  * Use is subject to license terms.
25 7c478bd9Sstevel@tonic-gate  */
26 7c478bd9Sstevel@tonic-gate 
27 *7257d1b4Sraf #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 7c478bd9Sstevel@tonic-gate 
29 *7257d1b4Sraf #include "lint.h"
30 7c478bd9Sstevel@tonic-gate #include <euc.h>
31 7c478bd9Sstevel@tonic-gate #include <ctype.h>
32 7c478bd9Sstevel@tonic-gate 
33 7c478bd9Sstevel@tonic-gate /*
34 7c478bd9Sstevel@tonic-gate  * euccol(s) returns the screen column width of the EUC char.
35 7c478bd9Sstevel@tonic-gate  */
36 7c478bd9Sstevel@tonic-gate int
euccol(const unsigned char * s)37 7c478bd9Sstevel@tonic-gate euccol(const unsigned char *s)
38 7c478bd9Sstevel@tonic-gate {
39 7c478bd9Sstevel@tonic-gate 
40 7c478bd9Sstevel@tonic-gate 	if (ISASCII(*s))
41 7c478bd9Sstevel@tonic-gate 		return (1);
42 7c478bd9Sstevel@tonic-gate 	else
43 7c478bd9Sstevel@tonic-gate 		switch (*s) {
44 7c478bd9Sstevel@tonic-gate 		case SS2:
45 7c478bd9Sstevel@tonic-gate 			return (scrw2);
46 7c478bd9Sstevel@tonic-gate 		case SS3:
47 7c478bd9Sstevel@tonic-gate 			return (scrw3);
48 7c478bd9Sstevel@tonic-gate 		default: /* code set 1 */
49 7c478bd9Sstevel@tonic-gate 			return (scrw1);
50 7c478bd9Sstevel@tonic-gate 		}
51 7c478bd9Sstevel@tonic-gate }
52 7c478bd9Sstevel@tonic-gate 
53 7c478bd9Sstevel@tonic-gate /*
54 7c478bd9Sstevel@tonic-gate  * euclen(s,n) returns the code width of the  EUC char.
55 7c478bd9Sstevel@tonic-gate  * May also be implemented as a macro.
56 7c478bd9Sstevel@tonic-gate  */
57 7c478bd9Sstevel@tonic-gate int
euclen(const unsigned char * s)58 7c478bd9Sstevel@tonic-gate euclen(const unsigned char *s)
59 7c478bd9Sstevel@tonic-gate {
60 7c478bd9Sstevel@tonic-gate 
61 7c478bd9Sstevel@tonic-gate 	if (ISASCII(*s))
62 7c478bd9Sstevel@tonic-gate 		return (1);
63 7c478bd9Sstevel@tonic-gate 	else
64 7c478bd9Sstevel@tonic-gate 		switch (*s) {
65 7c478bd9Sstevel@tonic-gate 		case SS2:
66 7c478bd9Sstevel@tonic-gate 			return (eucw2 + 1); /* include SS2 */
67 7c478bd9Sstevel@tonic-gate 		case SS3:
68 7c478bd9Sstevel@tonic-gate 			return (eucw3 + 1); /* include SS3 */
69 7c478bd9Sstevel@tonic-gate 		default: /* code set 1 */
70 7c478bd9Sstevel@tonic-gate 			return (eucw1);
71 7c478bd9Sstevel@tonic-gate 		}
72 7c478bd9Sstevel@tonic-gate }
73 7c478bd9Sstevel@tonic-gate 
74 7c478bd9Sstevel@tonic-gate /* this function will return the number of display column for a */
75 7c478bd9Sstevel@tonic-gate /* given euc string.						*/
76 7c478bd9Sstevel@tonic-gate int
eucscol(const unsigned char * s)77 7c478bd9Sstevel@tonic-gate eucscol(const unsigned char *s)
78 7c478bd9Sstevel@tonic-gate 
79 7c478bd9Sstevel@tonic-gate {
80 7c478bd9Sstevel@tonic-gate 	int	col = 0;
81 7c478bd9Sstevel@tonic-gate 
82 7c478bd9Sstevel@tonic-gate 	while (*s) { /* end if euc char is a NULL character */
83 7c478bd9Sstevel@tonic-gate 		if (ISASCII(*s)) {
84 7c478bd9Sstevel@tonic-gate 			col += 1;
85 7c478bd9Sstevel@tonic-gate 			s++;
86 7c478bd9Sstevel@tonic-gate 		}
87 7c478bd9Sstevel@tonic-gate 		else
88 7c478bd9Sstevel@tonic-gate 			switch (*s) {
89 7c478bd9Sstevel@tonic-gate 			case SS2:
90 7c478bd9Sstevel@tonic-gate 				col += scrw2;
91 7c478bd9Sstevel@tonic-gate 				s += (eucw2 +1);
92 7c478bd9Sstevel@tonic-gate 				break;
93 7c478bd9Sstevel@tonic-gate 			case SS3:
94 7c478bd9Sstevel@tonic-gate 				col += scrw3;
95 7c478bd9Sstevel@tonic-gate 				s += (eucw3 +1);
96 7c478bd9Sstevel@tonic-gate 				break;
97 7c478bd9Sstevel@tonic-gate 			default:	/* code set 1 */
98 7c478bd9Sstevel@tonic-gate 				col += scrw1;
99 7c478bd9Sstevel@tonic-gate 				s += eucw1;
100 7c478bd9Sstevel@tonic-gate 				break;
101 7c478bd9Sstevel@tonic-gate 			}
102 7c478bd9Sstevel@tonic-gate 
103 7c478bd9Sstevel@tonic-gate 	}
104 7c478bd9Sstevel@tonic-gate 	return (col);
105 7c478bd9Sstevel@tonic-gate }
106