/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include "lint.h"
#include <euc.h>
#include <ctype.h>

/*
 * euccol(s) returns the screen column width of the EUC char.
 */
int
euccol(const unsigned char *s)
{

        if (ISASCII(*s))
                return (1);
        else
                switch (*s) {
                case SS2:
                        return (scrw2);
                case SS3:
                        return (scrw3);
                default: /* code set 1 */
                        return (scrw1);
                }
}

/*
 * euclen(s,n) returns the code width of the  EUC char.
 * May also be implemented as a macro.
 */
int
euclen(const unsigned char *s)
{

        if (ISASCII(*s))
                return (1);
        else
                switch (*s) {
                case SS2:
                        return (eucw2 + 1); /* include SS2 */
                case SS3:
                        return (eucw3 + 1); /* include SS3 */
                default: /* code set 1 */
                        return (eucw1);
                }
}

/* this function will return the number of display column for a */
/* given euc string.                                            */
int
eucscol(const unsigned char *s)

{
        int     col = 0;

        while (*s) { /* end if euc char is a NULL character */
                if (ISASCII(*s)) {
                        col += 1;
                        s++;
                }
                else
                        switch (*s) {
                        case SS2:
                                col += scrw2;
                                s += (eucw2 +1);
                                break;
                        case SS3:
                                col += scrw3;
                                s += (eucw3 +1);
                                break;
                        default:        /* code set 1 */
                                col += scrw1;
                                s += eucw1;
                                break;
                        }

        }
        return (col);
}