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      1 /*   $NetBSD: add_wch.c,v 1.10 2024/12/23 02:58:03 blymn Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2005 The NetBSD Foundation Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from code donated to the NetBSD Foundation
      8  * by Ruibiao Qiu <ruibiao (at) arl.wustl.edu,ruibiao (at) gmail.com>.
      9  *
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. Neither the name of the NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
     24  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     25  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 #ifndef lint
     39 __RCSID("$NetBSD: add_wch.c,v 1.10 2024/12/23 02:58:03 blymn Exp $");
     40 #endif /* not lint */
     41 
     42 #include <stdlib.h>
     43 #include "curses.h"
     44 #include "curses_private.h"
     45 #ifdef DEBUG
     46 #include <assert.h>
     47 #endif
     48 
     49 /*
     50  * add_wch --
     51  *	Add the wide character to the current position in stdscr.
     52  *
     53  */
     54 int
     55 add_wch(const cchar_t *wch)
     56 {
     57 	return wadd_wch(stdscr, wch);
     58 }
     59 
     60 
     61 /*
     62  * mvadd_wch --
     63  *      Add the wide character to stdscr at the given location.
     64  */
     65 int
     66 mvadd_wch(int y, int x, const cchar_t *wch)
     67 {
     68 	return mvwadd_wch(stdscr, y, x, wch);
     69 }
     70 
     71 
     72 /*
     73  * mvwadd_wch --
     74  *      Add the character to the given window at the given location.
     75  */
     76 int
     77 mvwadd_wch(WINDOW *win, int y, int x, const cchar_t *wch)
     78 {
     79 	if (wmove(win, y, x) == ERR)
     80 		return ERR;
     81 
     82 	return wadd_wch(win, wch);
     83 }
     84 
     85 
     86 /*
     87  * wadd_wch --
     88  *	Add the wide character to the current position in the
     89  *	given window.
     90  *
     91  */
     92 int
     93 wadd_wch(WINDOW *win, const cchar_t *wch)
     94 {
     95 	int y = win->cury;
     96 	__LINE *lnp = NULL;
     97 
     98 	if (__predict_false(win == NULL))
     99 		return ERR;
    100 
    101 #ifdef DEBUG
    102 	int i;
    103 	int x = win->curx;
    104 
    105 	for (i = 0; i < win->maxy; i++) {
    106 		assert(win->alines[i]->sentinel == SENTINEL_VALUE);
    107 	}
    108 	__CTRACE(__CTRACE_INPUT, "wadd_wch: win(%p), x: %d, y: %d\n",
    109 	    win, x, y);
    110 #endif
    111 	lnp = win->alines[y];
    112 	return _cursesi_addwchar(win, &lnp, &(win->cury), &(win->curx), wch, 1);
    113 }
    114