libc/xcurses/winnwstr.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 (c) 1995, by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * winnwstr.c
 *
 * XCurses Library
 *
 * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
 *
 */

#if M_RCSID
#ifndef lint
static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/winnwstr.c 1.1 1995/06/14 15:26:07 ant Exp $";
#endif
#endif

#include <private.h>

int
winnwstr(w, wcs, n)
WINDOW *w;
wchar_t *wcs;
int n;
{
    int i, y, x;
    cchar_t *cp;

#ifdef M_CURSES_TRACE
    __m_trace("winnwstr(%p, %p, %d)", w, wcs, n);
#endif

    for (x = w->_curx; x < w->_maxx && 0 < n; n -= i) {
        cp = &w->_line[w->_cury][x];

        /* Will entire character fit into buffer? */
        if (n < cp->_n)
            break;

        /* Copy only the character portion. */
        for (i = 0; i < cp->_n; ++i)
            *wcs++ = cp->_wc[i];

        x = __m_cc_next(w, y, x);
    }

    /* Enough room to null terminate the buffer? */
    if (0 < n)
        *wcs = '\0';

    return __m_return_code("winnwstr", OK);
}