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printw.c revision 1.23 
      1 /*	$NetBSD: printw.c,v 1.23 2016/10/23 21:20:56 christos 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 1.23 2016/10/23 21:20:56 christos 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 	va_start(ap, fmt);
     76 	ret = vw_printw(win, fmt, ap);
     77 	va_end(ap);
     78 	return (ret);
     79 }
     80 /*
     81  * mvprintw, mvwprintw --
     82  *	Implement the mvprintw commands.  Due to the variable number of
     83  *	arguments, they cannot be macros.  Sigh....
     84  */
     85 int
     86 mvprintw(int y, int x, const char *fmt,...)
     87 {
     88 	va_list ap;
     89 	int     ret;
     90 
     91 	if (move(y, x) != OK)
     92 		return (ERR);
     93 	va_start(ap, fmt);
     94 	ret = vw_printw(stdscr, fmt, ap);
     95 	va_end(ap);
     96 	return (ret);
     97 }
     98 
     99 int
    100 mvwprintw(WINDOW * win, int y, int x, const char *fmt,...)
    101 {
    102 	va_list ap;
    103 	int     ret;
    104 
    105 	if (wmove(win, y, x) != OK)
    106 		return (ERR);
    107 
    108 	va_start(ap, fmt);
    109 	ret = vw_printw(win, fmt, ap);
    110 	va_end(ap);
    111 	return (ret);
    112 }
    113 /*
    114  * Internal write-buffer-to-window function.
    115  */
    116 static ssize_t
    117 winwrite(void   *cookie, const void *vbuf, size_t n)
    118 {
    119 	WINDOW *win;
    120 	size_t     c;
    121 	const char *buf = vbuf;
    122 
    123 	for (c = 0, win = cookie; c < n; c++) {
    124 #ifdef DEBUG
    125 		__CTRACE(__CTRACE_MISC, "__winwrite: %c\n", *buf);
    126 #endif
    127 		if (waddch(win, (chtype) (*buf++ & __CHARTEXT)) == ERR)
    128 			return (-1);
    129 	}
    130 	return (ssize_t)n;
    131 }
    132 /*
    133  * vw_printw --
    134  *	This routine actually executes the printf and adds it to the window.
    135  */
    136 int
    137 vw_printw(WINDOW *win, const char *fmt, va_list ap)
    138 {
    139 	if (win->fp == NULL) {
    140 		win->fp = funopen2(win, NULL, winwrite, NULL, NULL, NULL);
    141 		if (win->fp == NULL)
    142 			return ERR;
    143 	}
    144 	vfprintf(win->fp, fmt, ap);
    145 	fflush(win->fp);
    146 	return OK;
    147 }
    148 
    149 __strong_alias(vwprintw, vw_printw)
    150