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      1 /*	$NetBSD: printw.c,v 1.31 2024/12/23 02:58:04 blymn Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1981, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)printw.c	8.3 (Berkeley) 5/4/94";
     36 #else
     37 __RCSID("$NetBSD: printw.c,v 1.31 2024/12/23 02:58:04 blymn Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include <stdarg.h>
     42 
     43 #include "curses.h"
     44 #include "curses_private.h"
     45 
     46 /*
     47  * printw and friends.
     48  */
     49 
     50 /*
     51  * printw --
     52  *	Printf on the standard screen.
     53  */
     54 int
     55 printw(const char *fmt,...)
     56 {
     57 	va_list ap;
     58 	int     ret;
     59 
     60 	va_start(ap, fmt);
     61 	ret = vw_printw(stdscr, fmt, ap);
     62 	va_end(ap);
     63 	return ret;
     64 }
     65 /*
     66  * wprintw --
     67  *	Printf on the given window.
     68  */
     69 int
     70 wprintw(WINDOW *win, const char *fmt,...)
     71 {
     72 	va_list ap;
     73 	int     ret;
     74 
     75 	if (__predict_false(win == NULL))
     76 		return ERR;
     77 
     78 	va_start(ap, fmt);
     79 	ret = vw_printw(win, fmt, ap);
     80 	va_end(ap);
     81 	return ret;
     82 }
     83 /*
     84  * mvprintw, mvwprintw --
     85  *	Implement the mvprintw commands.  Due to the variable number of
     86  *	arguments, they cannot be macros.  Sigh....
     87  */
     88 int
     89 mvprintw(int y, int x, const char *fmt,...)
     90 {
     91 	va_list ap;
     92 	int     ret;
     93 
     94 	if (move(y, x) != OK)
     95 		return ERR;
     96 	va_start(ap, fmt);
     97 	ret = vw_printw(stdscr, fmt, ap);
     98 	va_end(ap);
     99 	return ret;
    100 }
    101 
    102 int
    103 mvwprintw(WINDOW * win, int y, int x, const char *fmt,...)
    104 {
    105 	va_list ap;
    106 	int     ret;
    107 
    108 	if (wmove(win, y, x) != OK)
    109 		return ERR;
    110 
    111 	va_start(ap, fmt);
    112 	ret = vw_printw(win, fmt, ap);
    113 	va_end(ap);
    114 	return ret;
    115 }
    116 
    117 /*
    118  * vw_printw --
    119  *	This routine actually executes the printf and adds it to the window.
    120  */
    121 int
    122 vw_printw(WINDOW *win, const char *fmt, va_list ap)
    123 {
    124 	int n;
    125 
    126 	__CTRACE(__CTRACE_INPUT, "vw_printw: win %p\n", win);
    127 
    128         if (__predict_false(win == NULL))
    129                 return ERR;
    130 
    131 	if (win->fp == NULL) {
    132 		win->fp = open_memstream(&win->buf, &win->buflen);
    133 		if (__predict_false(win->fp == NULL))
    134 			return ERR;
    135 	} else
    136 		rewind(win->fp);
    137 
    138 	n = vfprintf(win->fp, fmt, ap);
    139 	if (__predict_false(n == 0))
    140 		return OK;
    141 	if (__predict_false(n == -1))
    142 		return ERR;
    143 	if (__predict_false(fflush(win->fp) != 0))
    144 		return ERR;
    145 	return waddnstr(win, win->buf, n);
    146 }
    147 
    148 __strong_alias(vwprintw, vw_printw)
    149